目次

1總則·········································································1

2術(shù)語·········································································3

3基本規(guī)定··································································9

4計算流量和水力計算··················································11

4.1計算流量··································································11

4.2水力計算··································································14

5室外燃氣工程設(shè)計·····················································17

5.1一般規(guī)定······································································17

5.2管材············································································17

5.3管道附件······································································19

5.4調(diào)壓系統(tǒng)······································································20

5.5室外燃氣管道································································23

5.6管道防腐······································································33

5.7管道標志與管道構(gòu)筑物····················································35

6室內(nèi)燃氣工程設(shè)計·····················································37

6.1一般規(guī)定······································································37

6.2用氣房間······································································38

6.3管材············································································40

6.4管道附件······································································41

6.5燃氣表·········································································42

6.6室內(nèi)燃氣管道································································44

6.7居民生活用燃具·····························································48

6.8商業(yè)及工業(yè)企業(yè)生產(chǎn)用戶·················································51

6.9排煙············································································52

6.10燃氣監(jiān)測報警及通風······················································53

7小型LNG氣化站設(shè)計················································56

7.1一般規(guī)定······································································56

7.2站址選擇及平面·····························································57

7.3工藝及設(shè)施···································································63

7.4儀表及自控系統(tǒng)·····························································69

7.5消防設(shè)施及給排水··························································73

7.6電氣、通信系統(tǒng)·····························································75

7.7采暖通風······································································77

7.8建（構(gòu)）筑物································································78

8材料、設(shè)備的裝卸、運輸和存放···································79

8.1裝卸············································································79

8.2運輸············································································79

8.3存放············································································79

9燃氣工程施工···························································81

9.1一般規(guī)定······································································81

9.2土方工程施工································································82

9.3室外埋地鋼質(zhì)管道安裝····················································88

9.4室外鋼質(zhì)管道及管件防腐施工···········································94

9.5室外燃氣聚乙烯管道施工·················································99

9.6管道穿越·····································································104

9.7室外架空燃氣管道施工···················································108

9.8室外燃氣管道附件與設(shè)備安裝··········································110

9.9室外燃氣管道檢驗與試驗················································116

9.10室內(nèi)燃氣管道施工·······················································121

9.11居民用燃氣表安裝·······················································127

9.12商業(yè)、工業(yè)企業(yè)生產(chǎn)燃氣計量表安裝·······························129

9.13燃具和燃氣用氣設(shè)備安裝··············································131

9.14燃氣系統(tǒng)安全設(shè)施·······················································134

9.15室內(nèi)燃氣管道檢驗與試驗··············································135

9.16小型LNG氣化站工程施工············································137

10燃氣工程驗收························································151

10.1一般規(guī)定···································································151

10.2施工過程質(zhì)量驗收·······················································152

10.3預驗收······································································176

10.4竣工驗收···································································176

10.5小型LNG氣化站工程驗收············································179

11運營與維護···························································188

11.1一般規(guī)定···································································188

11.2燃氣設(shè)施運行和維護····················································190

11.3小型LNG氣化站的運行和維護·······································201

11.4搶修·········································································213

11.5生產(chǎn)作業(yè)···································································217

11.6圖檔資料···································································224

附錄A室內(nèi)外分界點示意圖·········································227

附錄B農(nóng)村居民生活用燃具的同時工作系數(shù)K·················230

附錄C爆炸危險區(qū)域的等級和范圍劃分··························232

附錄D防火間距起止點···············································234

附錄E被保護民用建筑類別等級劃分·····························235

附錄F燃氣工程質(zhì)量驗收記錄······································238

附錄G施工安裝技術(shù)文件記錄內(nèi)容及格式······················241

本規(guī)程用詞說明···························································245

引用標準名錄······························································246

附：條文說明······························································255

Contents

1Generalprovisions································································1

2Terms··················································································3

3Generalrequirement······························································9

4Calculateflowandhydrauliccalculations·······························11

4.1Calculatetraffic······························································11

4.2HydraulicCalculation·······················································14

5Outdoorgasengineeringdesign··········································17

5.1Generalreqirements·························································17

5.2Pipe············································································17

5.3Pipeaccessories······························································19

5.4Pressureregulatingsystem·················································20

5.5Outdoorgaspipeline························································23

5.6Pipeanti-corrosion··························································33

5.7Pipelinesignsandpipelinestructures·····································35

6Indoorgasengineeringdesign··············································37

6.1Generalreqirements·························································37

6.2Useofgasroom······························································38

6.3Pipe············································································40

6.4Pipeaccessories······························································41

6.5GasMeter·····································································42

6.6Indoorgaspipeline··························································44

6.7Residents'lifeburningappliances·········································48

6.8Commercialandindustrialenterpriseproductionusers················51

6.9Smokeexhaust·······························································52

6.10Gasmonitoringalarmandventilation···································53

7SmallLNGvaporizingstation··············································56

7.1Generalrequirements·······················································56

7.2Sitechoiceofstationandlayoutofstation·······························57

7.3LNGfillingprocessandfacilities·········································63

7.4Instrumentationandautomaticcontrol···································69

7.5Firefightingandwatersupplyanddrainage·····························73

7.6Electric、communicationsystem·········································75

7.7Heatingandventilation·····················································77

7.8buildings······································································78

8Handling,transportationandstorageofmaterialsand

equipment··········································································80

8.1Loadingandunloading·····················································80

8.2Transport······································································80

8.3Deposit········································································80

9Gasengineeringconstruction················································82

9.1Generalrequirements·······················································82

9.2EarthworksConstruction···················································83

9.3Installationofoutdoorburiedsteelpipeline·····························89

9.4Anticorrosionconstructionofoutdoorsteelpipeandpipefittings···95

9.5Constructionofoutdoorgasgaspolyethylenepipe···················100

9.6Pipelinecrossing···························································105

9.7Constructionofoutdooraerialgaspipeline····························109

9.8Accessoriesandequipmentinstallationofoutdoorgaspipeline·····111

9.9Inspectionandtestofoutdoorgaspipeline·····························117

9.10Constructionofindoorgaspipeline····································122

9.11Installationofgasmeterforresidents·································128

9.12Installationofgasmeterforcommercialandindustrialenterprises····

······················································································130

9.13Theinstallationoftheequipmentforgasandgasappliance·······132

9.14Gassystemsafetyfacilities·············································135

9.15Testandtestofindoorgaspipeline····································136

9.16SmallLNGvaporizingstationengineeringconstruction···········138

10Acceptanceofgasengineering··········································153

10.1Generalrequirements····················································153

10.2Qualityacceptanceofconstructionprocess···························154

10.3Completionacceptance··················································178

10.4Completionacceptance··················································178

10.5SmallLNGvaporizingstationengineeringacceptance·············181

11Operationandmaintenance···············································190

11.1Generalrequirements····················································190

11.2Operationandmaintenanceofgasfacilities··························192

11.3OperationandmaintenanceofLNGgasificationstation···········204

11.4Rush-repair································································216

11.5ProductionOperation····················································219

11.6DrawingandFilesMaterial·············································226

AppendixASchematicdiagramofindoorandoutdoordemarcati

-onpoints··························································229

AppendixBCoefficientofsimultaneousworkofhousehold

appl-iancesforruralresidentsK························232

AppendixCClassificationandRangeofExplosionHazardous

Areas·································································234

AppendixDFireStopSpacing··············································236

AppendixEClassificationofClassesofProtectedCivil

Buildings···························································237

AppendixFGasQualityAcceptanceRecords························240

AppendixGConstructionandInstallationTechnicalDocuments

RecordedContentandFormat····························243

Explanationofwordinginthiscode··········································245

Listofquotedstandards···························································246

Addition：Explanationofprovisions········································255

1總則

1.0.1為規(guī)范河北省農(nóng)村氣代煤工程符合安全生產(chǎn)、保障供氣、

經(jīng)濟合理、保護環(huán)境的要求，制定本規(guī)程。

1.0.2本規(guī)程適用于河北省農(nóng)村用戶使用天然氣（以下簡稱燃

氣）作為燃料的新建、擴建或改建燃氣工程的設(shè)計、施工、驗收

及運營維護。

1適用于設(shè)計壓力不大于0.4MPa（表壓）的居民生活、商

業(yè)及工業(yè)企業(yè)生產(chǎn)用氣。設(shè)計壓力大于0.4MPa的燃氣管道工程，

應(yīng)按國家現(xiàn)行有關(guān)標準的規(guī)定執(zhí)行。

2適用于液化天然氣（以下簡稱LNG）總儲存容積（指幾

何容積）不大于120m3的農(nóng)村LNG氣化站。其他燃氣門站、燃

氣儲配站、總儲存容積大于120m3LNG儲存氣化站、CNG供應(yīng)

站等燃氣氣源廠站工程，應(yīng)按國家現(xiàn)行有關(guān)標準的規(guī)定執(zhí)行。

1.0.3農(nóng)村氣代煤工程應(yīng)在不斷總結(jié)生產(chǎn)、建設(shè)和科學實驗的

基礎(chǔ)上，積極采用行之有效的新工藝、新技術(shù)、新材料和新設(shè)備，

做到安全實用、技術(shù)先進、經(jīng)濟合理。

1.0.4農(nóng)村氣代煤工程規(guī)劃應(yīng)遵循國家及當?shù)氐恼?，根?jù)鎮(zhèn)、

鄉(xiāng)、村發(fā)展總體規(guī)劃進行設(shè)計，并應(yīng)與當?shù)氐哪茉匆?guī)劃、環(huán)保規(guī)

劃、消防規(guī)劃等相結(jié)合。

1.0.5農(nóng)村氣代煤工程的規(guī)劃應(yīng)以居民生活用氣需求為主，兼顧

商業(yè)及工業(yè)企業(yè)生產(chǎn)用氣需求，做到近期與遠期相結(jié)合，綜合考

慮管道輸送能力及氣源保障能力。

1

1.0.6農(nóng)村氣代煤工程，除應(yīng)遵守本規(guī)程外，尚應(yīng)符合國家、

行業(yè)現(xiàn)行標準的有關(guān)規(guī)定。

2

2術(shù)語

2.0.1農(nóng)村氣代煤ruralgasreplacingcoal

專指農(nóng)村用戶使用天然氣代替柴、煤等作為燃料。

2.0.2農(nóng)村countryside

縣級及縣級以上人民政府駐地的城市、鎮(zhèn)規(guī)劃區(qū)以外的鎮(zhèn)、

鄉(xiāng)、村莊的統(tǒng)稱。

2.0.3居民生活用氣livinggasforruralresidents

用于農(nóng)村居民家庭炊事、制備熱水和熱水供暖用途的燃氣。

2.0.4燃氣燃燒器具gasburningappliances

以燃氣為燃料，用于炊事、制備熱水和熱水供暖用途的燃燒

裝置的總稱，簡稱燃具。

2.0.5燃氣用氣設(shè)備gasburningequipment

以燃氣作燃料進行加熱或驅(qū)動的燃燒設(shè)備或能量轉(zhuǎn)換設(shè)備。

主要指商業(yè)或工業(yè)企業(yè)生產(chǎn)用戶中的工業(yè)爐、燃氣鍋爐（包括承

壓鍋爐、常壓鍋爐、負壓鍋爐及有機熱載體鍋爐等）和燃氣直燃

型吸收式冷（溫）水機組（以下簡稱燃氣直燃機）等。

2.0.5A無線遠傳燃氣表（物聯(lián)表）gasmeterwithwireless

remote-reading

以微處理器和無線通信芯片為核心，具備內(nèi)置閥門和無線方

式與外部設(shè)備進行數(shù)據(jù)交換及遠程切斷功能的燃氣表。

2.0.6室內(nèi)外分界點indoorandoutdoordemarcationpoint

靠近單戶的室外配氣支管與用戶室內(nèi)燃氣進口總閥門之前管

道的連接點。室外掛表時，指室外配氣支管與表前閥門之前管道

3

的連接點。室內(nèi)外分界點示意圖見附錄A。

2.0.7低—低壓調(diào)壓器lowpressuretolowpressureregulator

將小于10kPa的低壓燃氣供氣壓力降低至燃具適用的供氣壓

力的裝置。

2.0.8管道燃氣自閉閥automaticshut-offvalveforpipelinegas

安裝在戶內(nèi)燃氣管道上，同時具有超壓自動關(guān)閉、欠壓自動

關(guān)閉、過流自動關(guān)閉功能，關(guān)閉時不借助外部動力，關(guān)閉后須手

動開啟的閥門。

2.0.9耐火極限fireresistancerating

在標準耐火試驗條件下，建筑構(gòu)件、配件或結(jié)構(gòu)從受到火的

作用時起，至失去承載能力、完整性或隔熱性時止所用時間，用h

表示。

2.0.10防火隔墻firepartitionwall

建筑物內(nèi)防止火災蔓延至相鄰區(qū)域且耐火極限不低于規(guī)定要

求的不燃性墻體。

2.0.11防火墻firewall

防止火災蔓延至相鄰建筑物或相鄰水平防火分區(qū)且耐火極限

不低于3.00h的不燃性墻體。

2.0.12彈性敷設(shè)pipelayingwithelasticbending

利用管道在外力或自重作用下產(chǎn)生彈性彎曲變形，改變管道

走向或適應(yīng)高程變化的管道敷設(shè)方式。

2.0.13小型LNG氣化站smallLNGvaporizingstation

以LNG儲罐為儲存設(shè)施，總儲存容積不大于120m3，用氣化

裝置將LNG轉(zhuǎn)變?yōu)樘烊粴夂?，?jīng)調(diào)壓、計量、加臭，通過管道向

用戶供氣的專門場所。包括橇裝氣化站、瓶組氣化站。

4

2.0.14LNG橇裝氣化站LNGskid-mountedvaporizingdevice

將LNG儲罐、卸車裝置、氣化裝置、減壓裝置、計量裝置、

放散管、加臭裝置等設(shè)備裝配于一個或幾個橇體上的設(shè)備組合體，

LNG儲罐總?cè)莘e不應(yīng)超過20m3。

2.0.15LNG儲罐區(qū)LNGtankfarm

一個或多個LNG儲罐構(gòu)成的區(qū)域。

2.0.16生產(chǎn)輔助用房Productionauxiliaryhouse

為滿足場站主體工藝生產(chǎn)需要配套的輔助建筑用房。如變配

電間、消防泵房、控制室、值班室等。

2.0.17LNG帶泵罐車LNGtanklorrybeltpump

一種運輸LNG的槽車，槽車上配有卸液用的LNG泵。

2.0.18LNG運輸車LNGtransporters

運輸LNG的工具，本規(guī)程中指LNG槽車、LNG帶泵罐車、

載運氣瓶的汽車。

2.0.19非開挖技術(shù)non-trenchingtechnology

以最小的地表開挖量進行各種地下管線探查、鋪設(shè)、更換和

修復的施工技術(shù)。

2.0.20水平定向鉆施工horizontaldirectionaldrilling

利用水平定向鉆機以可控鉆進軌跡的方式，在不同地層和深

度進行鉆進并通過定位儀導向抵達設(shè)計位置而鋪設(shè)地下管線施工

的施工方法。施工主要分三部分：1、導向孔；2、擴孔；3、管線

回拖。

2.0.21水鉆法施工hydraulicdrilling

一門新興的非開挖施工工藝，利用水鉆在工作坑內(nèi)進行水平

鉆進而敷設(shè)地下管線的施工方法，施工主要分三部分：

5

1導向孔；

2擴孔；

3穿管。主要適用于土層、穿越距離短、管徑小的非開挖施

工。

2.0.22入土工作坑boreentry

利用開挖入土坑可以發(fā)現(xiàn)入土側(cè)淺層是否有管線及盛放施工

過程中的泥漿。一般開挖深度不低于2m。

2.0.23出口工作坑boreexit

為探查出土側(cè)是否有在建管線及回收水平定向鉆進施工中排

出的泥漿而開挖的工作坑，一般開挖深度不低于2m。

2.0.24鉆進液/泥漿drillingfluid/mud

通常指水和澎潤土或其他泥漿添加劑組成的混合物。

2.0.25導向孔guidehole

水平定向鉆進施工時，在鉆頭內(nèi)裝入定位儀器，利用地面接

收裝置控制鉆頭的方位及深度，并保證在出土工作坑準確出土。

2.0.26入土角/出土角entry/exitangle

在進行水平定向鉆進時，鉆桿鉆入或鉆出地面時鉆桿與地面

的夾角。

2.0.27回擴reaminghole

水平定向鉆進導向孔完成后，需要進行逐級擴孔，將擴孔器

安裝在出土側(cè)鉆桿上，通過入土側(cè)鉆機回拉旋轉(zhuǎn)的作業(yè)方式進行

擴孔工序。一般擴孔直徑為管徑的1.5倍。

2.0.28擴孔器reamer

水平定向鉆進擴孔工序中使用的接在鉆桿柱前端的切削頭。

根據(jù)地層巖性的不同，擴孔器的類別及型號不同：一般地層主要

6

有切割刀式擴孔器、桶式擴孔器、流道式擴孔器，巖石地層主要

有三牙輪式巖石擴孔器和滾刀式擴孔器。

2.0.29管道回拖pipebackpulling

水平定向鉆進施工時，將待敷設(shè)管道從出土工作坑拉入到入

土工作坑的工作過程。

2.0.30定位儀locatortool

一種用于確定從發(fā)射探頭發(fā)射出來的電磁波信號位置和強度

的電子儀器，也可用于探測地下管線的位置。主要有兩種：一種

是無線儀器，適合短距離，穿越深度較淺的工程，一種為地磁儀

器，適合穿江穿山、穿越深度較深的大型穿越工程。

2.0.31燃氣供應(yīng)單位gassupplyfirms

燃氣供應(yīng)企業(yè)和燃氣自管單位的統(tǒng)稱。燃氣供應(yīng)企業(yè)是指從

事燃氣儲存、輸配、經(jīng)營、管理、運行、維護的企業(yè)。

2.0.32燃氣設(shè)施gasfacility

用于燃氣輸配和應(yīng)用的設(shè)備、裝置、系統(tǒng)，包括管網(wǎng)、用戶

燃氣設(shè)施、監(jiān)控及數(shù)據(jù)采集系統(tǒng)等。

2.0.33用戶燃氣設(shè)施usergasinstallation

用戶燃氣管道、閥門、計量器具、調(diào)壓設(shè)備等。

2.0.34運行operation

從事燃氣供應(yīng)的專業(yè)人員，按照工藝要求和操作規(guī)程對燃氣

設(shè)施進行巡檢、操作、記錄等常規(guī)工作。

2.0.35維護maintenance

為保障燃氣設(shè)施的正常運行，預防故障、事故發(fā)生所進行的

檢查、維修、保養(yǎng)等工作。

2.0.36搶修r(nóng)ush-repair

7

燃氣設(shè)施發(fā)生危及安全的泄漏以及引起停氣、中毒、火災、

爆炸等事故時，采取緊急措施的作業(yè)。

8

3基本規(guī)定

3.0.1燃氣質(zhì)量應(yīng)符合現(xiàn)行國家標準《城鎮(zhèn)燃氣設(shè)計規(guī)范》GB

50028的有關(guān)規(guī)定。LNG的質(zhì)量應(yīng)符合現(xiàn)行國家標準《液化天然

氣的一般特性》GB/T19204的有關(guān)規(guī)定。

3.0.2燃氣應(yīng)有可以察覺的臭味，燃氣中加臭劑的質(zhì)量和加臭

量應(yīng)符合現(xiàn)行行業(yè)標準《城鎮(zhèn)燃氣加臭技術(shù)規(guī)程》CJJ/T148的規(guī)

定。

3.0.3農(nóng)村氣代煤工程平衡逐月、逐日的用氣不均勻性，應(yīng)由

氣源方統(tǒng)籌調(diào)度解決，且供氣應(yīng)保證穩(wěn)定性和連續(xù)性。

3.0.4農(nóng)村氣代煤工程燃氣管道的設(shè)計壓力分為3級，并應(yīng)符

合表3.0.4的規(guī)定。

表3.0.4農(nóng)村氣代煤工程燃氣設(shè)計壓力（表壓）分級

名稱壓力（MPa）

A0.2＜P≤0.4

中壓燃氣管道

B0.01≤P≤0.2

低壓燃氣管道P<0.01

3.0.5農(nóng)村氣代煤工程氣源應(yīng)根據(jù)上游氣源情況、氣源至用氣點

的距離、總用氣規(guī)模及設(shè)計壓力等因素，經(jīng)技術(shù)經(jīng)濟比較后確定。

3.0.6農(nóng)村氣代煤工程燃氣系統(tǒng)壓力級制的選擇，應(yīng)根據(jù)當?shù)厝?/p>

氣專項規(guī)劃、燃氣供應(yīng)來源、用戶用量及其分布、地形地貌、管

材設(shè)備供應(yīng)條件、施工和運營等因素，經(jīng)過多方案比較，擇優(yōu)選

取技術(shù)經(jīng)濟合理、安全可靠的方案。

3.0.6A采用管道燃氣的農(nóng)村建筑應(yīng)符合現(xiàn)行國家標準《農(nóng)村防

9

火規(guī)范》（GB50039）的相關(guān)規(guī)定，不得是土坯房、木板房、被列

入近期拆遷計劃和被確定為危房的農(nóng)村建筑及用易燃材料搭建墻

壁、屋頂?shù)慕ㄖ?/p>

3.0.7農(nóng)村氣代煤工程供氣調(diào)壓方式應(yīng)根據(jù)村莊人口、占地面

積、院落的整體布局及上游氣源壓力等參數(shù)，經(jīng)技術(shù)經(jīng)濟比選后

確定。

3.0.8農(nóng)村氣代煤工程各級壓力燃氣管道之間應(yīng)通過調(diào)壓裝置

相連。當有可能超過最大允許工作壓力時，應(yīng)設(shè)置防止管道超壓

的安全保護設(shè)備。

3.0.9陰極保護工程應(yīng)與燃氣管道工程同時勘察、設(shè)計、施工和

投運。

3.0.10農(nóng)村氣代煤工程室內(nèi)燃氣管道系統(tǒng)的最高工作壓力應(yīng)

小于0.01MPa，商業(yè)及工業(yè)企業(yè)生產(chǎn)用戶應(yīng)根據(jù)燃氣用氣設(shè)備的

實際參數(shù)確定。

3.0.11農(nóng)村氣代煤工程建設(shè)應(yīng)按照市政基礎(chǔ)設(shè)施工程有關(guān)建

設(shè)程序組織實施。

3.0.12農(nóng)村氣代煤工程開工建設(shè)前，建設(shè)、勘察、設(shè)計、施工、

監(jiān)理單位法定代表人應(yīng)當簽署授權(quán)書，明確本單位項目負責人。

3.0.13參與農(nóng)村氣代煤工程建設(shè)的建設(shè)、勘察、設(shè)計、施工、

監(jiān)理單位必須具有相適應(yīng)的資質(zhì)。

10

4計算流量和水力計算

4.1計算流量

4.1.1燃氣管道的計算流量應(yīng)依據(jù)規(guī)劃用氣量，并按計算月、日

的最大小時用氣量計算。該小時最大用氣量應(yīng)根據(jù)所有用戶燃氣

用氣量進行迭加后確定。

4.1.2農(nóng)村氣代煤工程中居民生活、商業(yè)及工業(yè)企業(yè)生產(chǎn)用戶的

燃氣設(shè)計用氣量，應(yīng)根據(jù)當?shù)厝細獍l(fā)展規(guī)劃和用氣量指標確定。

1居民生活的燃氣用量應(yīng)根據(jù)當?shù)鼐用裆畹慕y(tǒng)計數(shù)據(jù)分

析確定，至少按設(shè)置一臺燃氣雙眼灶和一臺燃氣熱水器或一臺燃

氣采暖熱水爐計算。

2商業(yè)用戶的燃氣用氣量應(yīng)根據(jù)當?shù)氐膶嶋H統(tǒng)計數(shù)據(jù)分析

確定，農(nóng)村公共建筑中的燃氣用氣量可參考對應(yīng)城市公共建筑中

的耗熱指標或規(guī)模來確定。

3燃氣用氣設(shè)備設(shè)計流量應(yīng)按所有用氣設(shè)備的額定流量并

根據(jù)設(shè)備的實際使用情況確定。

4使用其他燃料的用氣設(shè)備，計算流量可根據(jù)原燃料的實際

消耗量或額定熱負荷，或按同行業(yè)的用氣量指標分析，根據(jù)當?shù)?/p>

燃氣熱值折算后計算確定。

4.1.3農(nóng)村氣代煤工程燃氣管道的計算流量，應(yīng)采用高峰系數(shù)法

中的小時最大用氣量計算，或采用同時工作系數(shù)法計算。

4.1.4高峰系數(shù)法計算

11

農(nóng)村用戶燃氣小時計算流量（0℃和101.325kPa），宜按下列

公式計算：

1

QQ（4.1.4-1）

hna

36524

n（4.1.4-2）

KmKdKh

3

式中：Qh——燃氣小時計算流量（m/h）；

3

Qa——年燃氣用量（m/a）；

n——年燃氣最大負荷利用小時數(shù)（h）；

Km——月高峰系數(shù)，計算月的日平均用氣量和該年的日

平均用氣量之比；

Kd——日高峰系數(shù)，計算月中的最大日用氣量和該月的

平均日用氣量之比；

Kh——小時高峰系數(shù)。計算月中用氣量最大日的最大小

時用氣量和該日的平均小時用氣量之比。

4.1.5同時工作系數(shù)法計算

1燃氣計算流量可按下式計算：

QKNQ（4.1.5-1）

hn

3

式中：Qh——燃氣管道的計算流量（m/h）；

K——燃具的同時工作系數(shù)，居民生活用燃具可按附錄

B確定；

N——同種燃具或成組燃具的數(shù)目；

3

Qn——燃具的額定流量（m/h）；

ζ——實際利用系數(shù)。根據(jù)具體情況選取，按高峰利用

12

與全體利用之比確定。

注：居民用戶采暖用燃氣小時計算流量應(yīng)根據(jù)居民用戶的實際燃氣利用

情況及同時工作情況確定實際利用系數(shù)。

2采用熱負荷指標與建筑面積計算

當無建筑物設(shè)計耗熱總量及無設(shè)計已知條件時，燃氣用戶除

應(yīng)考慮炊事及熱水用氣外，供暖耗熱量宜按采暖系統(tǒng)供暖單元圍

護結(jié)構(gòu)耗熱量計算或按建筑面積估算。

居民用戶燃氣灶具及燃氣熱水器應(yīng)按式（4.1.5-1）計算確定。

采暖熱水爐供暖單元圍護結(jié)構(gòu)耗熱量計算時宜符合現(xiàn)行國家標準

《民用建筑供暖通風與空氣調(diào)節(jié)設(shè)計規(guī)范》GB50736和河北省現(xiàn)

行建筑節(jié)能設(shè)計標準的規(guī)定。

3民用建筑供暖按建筑面積估算時宜符合下列規(guī)定：

1）供暖熱指標可根據(jù)建筑物類型按現(xiàn)行行業(yè)標準《城

鎮(zhèn)供熱管網(wǎng)設(shè)計規(guī)范》CJJ34的規(guī)定選取或按室內(nèi)溫升

速率6K/h～8K/h計算。

2）民用建筑供暖系統(tǒng)燃氣計算流量可按下式計算：

KNqA

Q3.6103hc（4.1.5-2）

hQ

1

3

式中：Qh′——供暖系統(tǒng)的燃氣計算流量（m/h）；

2

qh——供暖熱指標（W/m）；

2

Ac——單戶建筑面積（m）；

η——采暖熱水爐采暖熱效率；

3

Ql——基準狀態(tài)燃氣低熱值（MJ/m）。

13

注：采用上述方法計算時，設(shè)計總的用氣量應(yīng)為燃氣用戶炊事用氣及熱水

用氣用量與采暖系統(tǒng)燃氣用量的總和。

4.2水力計算

4.2.1燃氣管道的管徑應(yīng)本著合理利用壓力降的原則，在水力

計算的基礎(chǔ)上確定；管道末端壓力應(yīng)滿足用戶的用氣需求或設(shè)備

的進口壓力要求。

4.2.2低壓燃氣管道單位長度的摩擦阻力損失應(yīng)按下式計算：

2

ΔP7QT（4.2.2）

6.2610λ5ρ

ldT0

式中：ΔP——燃氣管道摩擦阻力損失（Pa）；

λ——燃氣管道摩擦阻力系數(shù)，宜按式（4.2.3-2）和《城

鎮(zhèn)燃氣設(shè)計規(guī)范》GB50028-2006附錄C第C.0.1

條第1、2款計算；

l——燃氣管道的計算長度（m）；

Q——燃氣管道的計算流量（m3/h）；

d——管道內(nèi)徑（mm）；

ρ——燃氣的密度（kg/m3）；

T——設(shè)計中所采用的燃氣溫度（K）；

T0——273.15（K）。

4.2.3中壓燃氣管道的單位長度摩擦阻力損失，應(yīng)按下式計算：

P2P2Q2T

1210（4.2.3-1）

1.2710λ5ρZ

LdT0

14

1K2.51（）

2lg4.2.3-2

λ3.7dReλ

式中：P1——燃氣管道起點的壓力（絕壓kPa）；

P2——燃氣管道終點的壓力（絕壓kPa）；

Ｚ——壓縮因子，當燃氣壓力小于1.2MPa（表壓）時，

Ｚ取1；

Ｌ——燃氣管道的計算長度（km）；

λ——燃氣管道摩擦阻力系數(shù)，宜按式（4.2.3-2）計算；

lg——常用對數(shù)；

Ｋ——管壁內(nèi)表面的當量絕對粗糙度（mm）；

Re——雷諾數(shù)（無量綱）。

注：當燃氣管道的摩擦阻力系數(shù)采用手算時，宜采用《城鎮(zhèn)燃氣設(shè)

計規(guī)范》GB50028-2006附錄C公式。

4.2.4室外燃氣管道的局部阻力損失可按燃氣管道摩擦阻力損

失的5%～10%進行計算；室內(nèi)燃氣管道的局部阻力損失宜按實際

情況計算。

4.2.5當有調(diào)壓設(shè)施供應(yīng)低壓燃氣時，室內(nèi)低壓燃氣管道允許

的阻力損失，應(yīng)根據(jù)建筑物和室外管道情況，經(jīng)技術(shù)經(jīng)濟比較后

確定。

4.2.6計算低壓燃氣管道阻力損失時，對地形高差大應(yīng)考慮因高

程差引起的附加壓力。附加壓力可按下式計算：

（）

H9.8（k）h4.2.6

式中：ΔΗ——燃氣的附加壓力（Pa）；

3

ρk——空氣的密度（kg/m）；

15

ρ——燃氣的密度（kg/m3）；

h——燃氣管道終、起點的高程差（m）。

4.2.7低壓燃氣管道從調(diào)壓柜或調(diào)壓箱到最遠燃具或燃氣用氣

設(shè)備管道允許阻力損失，可按下式計算：

（）

Pd0.75Pn+1504.2.7

式中：ΔPd——從調(diào)壓設(shè)施到最遠燃具的管道允許阻力損失

（Pa）；

Pn——低壓燃具或燃氣用氣設(shè)備的額定壓力（Pa）。

注：ΔPd含室內(nèi)燃氣管道允許阻力損失。

16

5室外燃氣工程設(shè)計

5.1一般規(guī)定

5.1.1本章適用于農(nóng)村室外的燃氣系統(tǒng)設(shè)計（不包括氣源廠站），

即從氣源廠站外或上游氣源供氣干管支線的起點至室內(nèi)外分界點

的所有管道及相關(guān)系統(tǒng)設(shè)施。

5.1.2燃氣管道不應(yīng)通過軍事設(shè)施、易燃易爆倉庫、國家重點

文物保護單位的安全保護區(qū)、飛機場、火車站、海（河）港碼頭。

5.1.3燃氣干管的布置，應(yīng)根據(jù)用戶用量及其分布，全面規(guī)劃，

并宜按逐步形成環(huán)狀管網(wǎng)供氣進行設(shè)計。

5.1.4燃氣干管應(yīng)避免設(shè)置在不良地質(zhì)區(qū)域，當確需設(shè)置時，

應(yīng)采取有效的安全防護措施。

5.1.4A農(nóng)村燃氣管道可采取埋地和架空等方式敷設(shè)。

5.1.5調(diào)壓裝置宜采用調(diào)壓箱、調(diào)壓柜，且應(yīng)符合現(xiàn)行國家標準

《城鎮(zhèn)燃氣調(diào)壓箱》GB27791的有關(guān)規(guī)定。

5.1.6燃氣管道穿跨越應(yīng)符合現(xiàn)行國家標準《城鎮(zhèn)燃氣設(shè)計規(guī)

范》GB50028和現(xiàn)行行業(yè)標準《城鎮(zhèn)燃氣管道穿跨越工程技術(shù)規(guī)

程》CJJ/T250的有關(guān)規(guī)定。

5.1.7鋼質(zhì)燃氣管道和鋼質(zhì)附屬設(shè)備應(yīng)根據(jù)環(huán)境條件和燃氣管

道的重要程度采取腐蝕控制措施。

5.2管材

17

5.2.1燃氣管道所用管道材料的選擇，應(yīng)根據(jù)管道的使用條件

（設(shè)計壓力、溫度、介質(zhì)特性、使用地區(qū)等）、材料的焊接性能等

因素，經(jīng)技術(shù)經(jīng)濟比較后確定。

5.2.2室外燃氣管道宜采用鋼管或聚乙烯管（PE管），低壓庭院

架空管道可采用熱浸鍍鋅鋼管。當采用其他類型管材時，應(yīng)符合

現(xiàn)行國家標準《城鎮(zhèn)燃氣設(shè)計規(guī)范》GB50028中的有關(guān)規(guī)定。

5.2.3鋼管或聚乙烯管管材選擇應(yīng)符合下列要求：

1鋼管應(yīng)符合現(xiàn)行國家標準《石油天然氣工業(yè)管線輸送系統(tǒng)

用鋼管》GB/T9711、《輸送流體用無縫鋼管》GB/T8163、《低壓

流體輸送用焊接鋼管》GB/T3091（管道材料鋼牌號不應(yīng)低于

Q235B）或不低于上述標準相應(yīng)技術(shù)要求的其他鋼管標準的規(guī)定。

2聚乙烯燃氣管應(yīng)符合現(xiàn)行國家標準《燃氣用埋地聚乙烯

（PE）管道系統(tǒng)第1部分：管材》GB/T15558.1的規(guī)定。

5.2.4穿跨越燃氣管道的材料選擇應(yīng)符合現(xiàn)行行業(yè)標準《城鎮(zhèn)

燃氣管道穿跨越工程技術(shù)規(guī)程》CJJ/T250的有關(guān)規(guī)定。

5.2.5鋼質(zhì)燃氣管道的最小公稱壁厚不應(yīng)小于表5.2.5的規(guī)定。

表5.2.5鋼質(zhì)燃氣管道最小公稱壁厚

鋼管公稱直徑DN（mm）最小公稱壁厚（mm）

DN15～DN402.8

DN50～DN803.5

DN100～DN1504.0

DN200～DN3004.8

DN350～DN4505.2

18

5.3管道附件

5.3.1燃氣管道附件的材料等級不得低于連接管道的材料等級。

壓力管道元件應(yīng)由具有國家安全制造許可資格的生產(chǎn)廠家生產(chǎn)和

制造。

5.3.2燃氣管道附件的設(shè)計和選用應(yīng)符合下列規(guī)定：

1鋼制管件應(yīng)符合現(xiàn)行國家標準《鋼制對焊管件類型與參

數(shù)》GB/T12459、《鋼制對焊管件技術(shù)規(guī)范》GB/T13401的有關(guān)

規(guī)定。管件的材質(zhì)不低于連接管道的材質(zhì)。

2鋼質(zhì)管法蘭的選用應(yīng)符合現(xiàn)行國家標準《鋼制管法蘭》

GB/T9112～GB/T9124或現(xiàn)行行業(yè)標準《鋼制管法蘭、墊片、緊

固件》HG/T20592~HG/T20635，或不低于上述標準相應(yīng)技術(shù)要

求的其他標準的規(guī)定，法蘭、墊片和緊固件應(yīng)考慮介質(zhì)特性配套

選用。

3鋼質(zhì)燃氣管道宜采用焊接或法蘭連接。管道公稱直徑不大

于DN50的低壓架空鋼質(zhì)燃氣管道，可采用螺紋連接。螺紋管件的

選擇應(yīng)符合現(xiàn)行國家標準《55°密封管螺紋第2部分：圓錐內(nèi)螺紋

與圓錐外螺紋》GB/T7306.2、《可鍛鑄鐵管路連接件》GB/T3287

的有關(guān)規(guī)定。

4絕緣法蘭、絕緣接頭的選用應(yīng)符合現(xiàn)行行業(yè)標準《絕緣接

頭與絕緣法蘭技術(shù)規(guī)范》SY/T0516的規(guī)定。

5聚乙烯管件應(yīng)符合現(xiàn)行國家標準《燃氣用埋地聚乙烯

（PE）管道系統(tǒng)第2部分：管件》GB/T15558.2的有關(guān)規(guī)定。鋼

塑轉(zhuǎn)換管件應(yīng)符合現(xiàn)行國家標準《燃氣用聚乙烯管道系統(tǒng)的機械

管件第1部分：公稱外徑不大于63mm的管材用鋼塑轉(zhuǎn)換管件》

19

GB/T26255.1和《燃氣用聚乙烯管道系統(tǒng)的機械管件第2部分：

公稱外徑大于63mm的管材用鋼塑轉(zhuǎn)換管件》GB/T26255.2中的有

關(guān)規(guī)定。

6燃氣使用的鋼制閥門應(yīng)符合現(xiàn)行國家標準《石油、石化及

相關(guān)工業(yè)用的鋼制球閥》GB/T12237、現(xiàn)行行業(yè)標準《建筑用手

動燃氣閥門》CJ/T180或《燃氣管道用銅制球閥和截止閥》JB/T

11492的有關(guān)規(guī)定。

7波紋補償器應(yīng)符合現(xiàn)行國家標準《金屬波紋管膨脹節(jié)通用

技術(shù)條件》GB/T12777中的有關(guān)規(guī)定。

8聚乙烯（PE）閥門應(yīng)符合現(xiàn)行國家標準《燃氣用埋地聚

乙烯（PE）管道系統(tǒng)第3部分：閥門》GB/T15558.3中的有關(guān)規(guī)

定。閥體應(yīng)采用PE100聚乙烯制造。

5.4調(diào)壓系統(tǒng)

5.4.1調(diào)壓器的設(shè)置應(yīng)符合下列規(guī)定：

1調(diào)壓器應(yīng)能滿足進口燃氣的最高、最低壓力的要求。

2調(diào)壓器的壓力差應(yīng)根據(jù)調(diào)壓器前燃氣管道的最低設(shè)計壓

力與調(diào)壓器后燃氣管道設(shè)計壓力的差值確定。

3調(diào)壓器的計算流量應(yīng)按該調(diào)壓器所承擔的管網(wǎng)小時最大

通過量的1.2倍確定。

4在調(diào)壓器燃氣入口處應(yīng)設(shè)置過濾器。

5在調(diào)壓器燃氣入口（或出口）處，應(yīng)設(shè)防止燃氣出口壓力

過高的安全保護裝置（當調(diào)壓器本身帶有安全保護裝置時可不

設(shè)）。

20

6調(diào)壓器的安全保護裝置宜采用人工復位型。安全保護（放

散或切斷）裝置必