CN103225743A - Transportation and distribution method for natural gas - Google Patents
Transportation and distribution method for natural gas Download PDFInfo
- Publication number
- CN103225743A CN103225743A CN2013101056599A CN201310105659A CN103225743A CN 103225743 A CN103225743 A CN 103225743A CN 2013101056599 A CN2013101056599 A CN 2013101056599A CN 201310105659 A CN201310105659 A CN 201310105659A CN 103225743 A CN103225743 A CN 103225743A
- Authority
- CN
- China
- Prior art keywords
- pressure
- voltage regulating
- regulating station
- mpa
- branch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Pipeline Systems (AREA)
Abstract
A transportation and distribution method for natural gas is characterized in that main pressure regulation and branch pressure regulation are adopted, namely, a main pressure regulation station performs pressure regulation on introduction of external high pressure gas, and branch pressure regulation stations perform transportation and distribution for different users; the introduced natural gas pressure ranges from 1.0 Mpa to 1.5 Mpa, and is reduced to 0.6 Mpa to 0.8 Mpa after regulated by the main pressure regulation station; the natural gas with the pressure ranging from 0.6 Mpa to 0.8 Mpa enters each branch pressure regulation station, the pressure is reduced to 0.03 Mpa to 0.06 Mpa after the gas is subjected to pressure regulation by each branch pressure regulation station, and the gas is supplied to each branch user; and when the use level of one of the branch users fluctuates, the corresponding branch pressure regulation station regulates the pressure and the transportation and distribution quantity automatically to ensure that the rear manifold pressure, which ranges from 0.6 Mpa to 0.8 Mpa, of the main pressure regulation station is not affected. The transportation and distribution method has the characteristics of strong usability, wide application range, safety and reliability.
Description
Technical field
The present invention relates to a kind of natural gas transmission and distribution method.
Background technique
Users such as the trunk line rock gas supply steel-making of Taiyuan Iron and Steel Co. introduction Shanxi Province, steel rolling reach more than five since 2006, amount to and lay the about 15km of pipeline.Economize trunk line gas pressure 1.0～2.0Mpa, need steady pressure 0.016 Mpa before the Taiyuan Iron and Steel Co. internal user oven, total amount 1.0～5.0 ten thousand Nm
3/ h.How to realize that the external high pressure rock gas introduces smoothly, the user who satisfies a plurality of low pressure and different amounts simultaneously uses, and pipeline investment is simultaneously saved as far as possible.
Summary of the invention
In order to satisfy a kind of natural gas transmission and distribution method of a plurality of different pressures or consumption grade rock gas user simultaneously.It has satisfied that the rock gas high pressure is introduced, low pressure is used use the gas pattern, has avoided a plurality of users' points of company to use rock gas that the mutual interference problem of fluctuation generation takes place simultaneously simultaneously, for rock gas safety, stablize transmission ﹠ distribution favourable guarantee is provided.
A kind of natural gas transmission and distribution method, it is characterized in that adopting total pressure regulation+minute pressure regulation, be that total voltage regulating station carries out the pressure regulation that the external high pressure rock gas is introduced, the branch voltage regulating station carries out the transmission ﹠ distribution of different user, promptly introducing gas pressure is 1.0～1.5Mpa, regulate back pressure through total voltage regulating station and reduce to 0.6～0.8 Mpa, pressure is that the rock gas of 0.6～0.8 Mpa enters each minute voltage regulating station, reduce to 0.03～0.06Mpa through pressure after each minute voltage regulating station pressure regulation and supply with each minute user, corresponding voltage regulating station automatic pressure regulation and the transmission ﹠ distribution amount thereof of dividing when the wherein a certain user's consumption of minute user fluctuates, total pipe pressure 0.6～0.8 Mpa is unaffected after guaranteeing total voltage regulating station, therefore other substation moves held stationary, and the main equipment of total voltage regulating station and branch voltage regulating station is a plurality of self-erecting type pressure regulator valves;
Be relation in parallel between the self-erecting type pressure regulator valve in every branch voltage regulating station, different self-erecting type pressure regulator valves can be by different amount of natural gas, and are identical through the pressure after the adjusting of self-erecting type pressure regulator valve.
Self-erecting type pressure regulator valve in every branch voltage regulating station is according to producing actual demand isolated operation or operation simultaneously.
Divide voltage regulating station transmission ﹠ distribution pressure according to rear portion user's needs, the self-erecting type pressure regulator valve Operational Limits of minute voltage regulating station is provided with.
The present invention adopts the pattern of master station+substation, and it is made up of total voltage regulating station and branch voltage regulating station, and equipment comprises a plurality of self-erecting type pressure regulator valves and a bypass valve (electric press switch valve).
Total voltage regulating station realizes that the pressure that external high pressure pipe network rock gas enters inner low-pressure pipe network system regulates; The branch voltage regulating station is provided with separately with atmospheric pressure and consumption according to different user, satisfies the demand of substation respective user.
Shown in Figure 1, the introduction gas pressure is P1, regulate back pressure through total voltage regulating station and reduce to P2, pressure is that the rock gas of P2 enters each minute voltage regulating station (such as stand 3-1,3-2 and 3-3, even more substations), reduce to P3 respectively through pressure after the substation pressure regulation and supply with user 4-1, P4 supply user 4-2, P5 supply user 4-3.Corresponding voltage regulating station automatic pressure regulation and the transmission ﹠ distribution amount thereof of dividing when a certain user's consumption fluctuation wherein, guarantee total voltage regulating station after house steward's pressure P 2 unaffected, so other substation operation held stationary.Substation 3-1 pressure regulator valve increased transmission ﹠ distribution amount (pressure P 3 is constant simultaneously) automatically when for example user 4-1 consumption increased, because the increase of user 4-1 transmission ﹠ distribution amount directly causes the corresponding increase of master station's 2 transmission ﹠ distribution amounts (pressure P 2 remains unchanged simultaneously), other substation 3-2 and 3-3 operation is constant because P2 remains unchanged, and relative users 4-2 and 4-3 productions are also kept normal, unaffected thereafter.If substation 3-1 pressure regulator valve reduced the transmission ﹠ distribution amount automatically when user 4-1 consumption reduced, for keeping the total voltage regulating station of P2 pressure stability 2 transmission ﹠ distribution amounts to reduce corresponding transmission ﹠ distribution amount automatically, final substation 3-2 and 3-3 are because P2 stablizes also normally operation of its operation, and its respective user 4-2 and 4-3 produce and also keep normal.
The 3-1 of voltage regulating station, 3-2,3-3 can dispose different transmission ﹠ distribution abilities according to the demand of rear portion respective user in of the present invention minute, and the branch voltage regulating station can be more than three or three; Adjusting pressure P 3, P4 and the P5 of branch voltage regulating station can be the same or different.
The present invention has satisfied the user's request of different pressures, different flow, and the fluctuation of user's consumption can not exert an influence to other user.This transmission ﹠ distribution method has strong, applied widely, the safe and reliable characteristics of usability, for the multi-faceted use rock gas of large-scale synthesis company provides effective transmission ﹠ distribution pattern.
Description of drawings
Fig. 1 is a transmission ﹠ distribution method schematic representation of the present invention.
Fig. 2 is the structural drawing of total voltage regulating station or branch voltage regulating station in the embodiment of the invention.
Among the figure, control valve before and after 1 expression total voltage regulating station or the branchs voltage regulating station (comprise 1-1 to～1-8 valve), the total voltage regulating station of 2 expressions, 3 expression branch voltage regulating stations (comprising 3-1,3-2,3-3 substation), 4 represent rock gas users (comprising 4-1,4-2,4-3 user).
P1 represents the pressure that enters the station, and P2 represents the pressure that sets off.Q represents the total transmission ﹠ distribution amount of station institute, and Q1 represents main road transmission ﹠ distribution amount, and Q2 represents bypass-1 transmission ﹠ distribution amount, and Q3 represents bypass-2 transmission ﹠ distribution amount, and Q=Q1+Q2+Q3.
Embodiment
Embodiment: total voltage regulating station of present embodiment is with to divide voltage regulating station operating structure principle identical.The agent structure of total voltage regulating station and branch voltage regulating station as shown in Figure 2.
Equipment comprises: the inlet/outlet pipeline gas sampling operation valve A1 of rock gas voltage regulating station, C1.
Main road equipment comprises: Pressure testing control valve B6, outlet conduit cut-off valve B7 and compensator B8 after cut-off valve B1, filter B 2, the preceding Pressure testing control valve B3 of pressure regulation, self-erecting type pressure regulator valve B4, blowdown valve B5, the pressure regulation;
Branch road-1 capital equipment comprises: Pressure testing control valve B6-1, outlet conduit cut-off valve B7-1 and compensator B8-1 after cut-off valve B1-1, filter B 2-1, the preceding Pressure testing control valve B3-1 of pressure regulation, self-erecting type pressure regulator valve B4-1, blowdown valve B5-1, the pressure regulation.
Branch road-2 capital equipment comprises: Pressure testing control valve B6-2, outlet conduit cut-off valve B7-2 and compensator B8-2 after cut-off valve B1-2, filter B 2-2, the preceding Pressure testing control valve B3-2 of pressure regulation, self-erecting type pressure regulator valve B4-2, blowdown valve B5-2, the pressure regulation.
Branch road-1 is identical with main road with-2 equipment disposition types, and the big ting model of branch road-1 equipment disposition is identical with main road, transmission ﹠ distribution rock gas tolerance is identical, and single channel transmission ﹠ distribution ability is about 60% of the maximum total amount of rear portion user; Branch road-2 main equipment configuration model is littler than main road, the transmission ﹠ distribution ability is about 30% of the maximum total amount of rear portion user.
Outlet header road B9 is a Decompression valves.
Cut-off valve B1, B1-1 and B1-2 are mainly used to control each branch road import source of the gas, respectively with its outlet conduit cut-off valve B7, B7-1 and B7-2 compounding practice, cut off the branch road air-flow, are convenient to a pipe filter, the overhaul of the equipments of self-erecting type pressure regulator valve;
Filter B 2, B2-1 and B2-2 are mainly used to filter the rock gas of each branch road, prevent the proper functioning of impurity effect rear portion self-erecting type pressure regulator valve;
Pressure testing control valve B3, B3-1 and B3-2 are mainly used to observe the preceding pressure condition of self-erecting type pressure regulator valve before the pressure regulation;
Self-erecting type pressure regulator valve B4, B4-1 and B4-2 are used to regulate each branch road gas pressure, are the nucleus equipments of voltage regulating station;
Blowdown valve B5, B5-1 and B5-2 are used to get rid of the impurity of pressure regulator valve rear portion pipeline deposition;
Pressure testing control valve B6, B6-1 and B6-2 are used to detect gas pressure situation behind the pressure regulator valve after the pressure regulation, whether satisfy customer requirements;
Compensator B8, B8-1 and B8-2 are used to solve the problem of expanding with heat and contract with cold of each bye-pass, and the degree of tightness operation of flange when being convenient to change arm self-erecting type pressure regulator valve;
Decompression valves B9 is too high suddenly for preventing the malfunctioning or unexpected decrement of user of the voltage regulating station self-erecting type pressure regulator valve back pressure that causes standing, and can open relieving pressure automatically by Decompression valves this moment, avoids high pressure that pipeline, equipment etc. is caused damage.
Total voltage regulating station and divide voltage regulating station equipment disposition type identical, difference is that total voltage regulating station transmission ﹠ distribution ability is each minute voltage regulating station transmission ﹠ distribution ability sum.
The voltage regulating station mode that puts into operation:
When voltage regulating station sent rock gas, main road and bypass were supplied gas successively, taked the secondary displacement patterns: earlier logical nitrogen replacement air, logical again gas replacement nitrogen.
(1) preparatory work: at first connect nitrogen at inlet pipeline valve A1 place, open each pressure gauge of main road and detect control valve B3 and B6, monitoring system nitrogen replacement pressure keeps 0.1MPa;
(2) nitrogen replacement air.
1. at first open main road import cut-off valve B1, make nitrogen enter filter along pipeline, open filter B 2(again and open the filter bottom blowdown valve and import and export bypass valve, the post personnel close blowdown valve by portable oxygen content detection instrument mensuration blowdown valve place oxygen content＜1.0% o'clock);
2. after the filter bottom blowdown valve cut out, nitrogen entered self-erecting type pressure regulator valve B4, opened outlet conduit blowdown valve B5(post personnel and closed blowdown valve by portable oxygen content detection instrument mensuration blowdown valve place oxygen content＜1.0% o'clock);
3. after outlet conduit blowdown valve B5 closes, open main road outlet cut-off valve B7, the nitrogen replacement main road is qualified.
4. bypass-1 and-2 nitrogen replacement operations are carried out according to the main road pattern.
5. after main road and bypass all finished through nitrogen replacement, voltage regulating station had finished nitrogen replacement air program.Close inlet pipeline valve A1 place nitrogen, and reliable the cut-out.Close main road and bypass and import and export cut-off valve.
(3) gas replacement nitrogen
1. at first send rock gas (initial pressure keeps 0.1Mpa) to voltage regulating station, rock gas enters main road and bypass system preceding pipeline.
2. main road gas replacement nitrogen.At first open import cut-off valve B1, open filter B 2 bottom blow-down valves subsequently, the post personnel detect in blowdown valve sampling, and gas sample methane content 70% is closed bottom blow-down valve when above; Open main road outlet conduit blowdown valve B5 again, sampling detects gas sample methane content 70% and closes when above; Open outlet cut-off valve B7 at last, main road possesses the rock gas operating conditions.
3. bypass-1 and-2 gas replacement nitrogen operations are according to the main road pattern.
4. after main road and bypass all passed through gas replacement nitrogen, voltage regulating station had possessed the natural gas transmission and distribution condition fully.
The method of operation:
(1) divides voltage regulating station
1. rock gas puts into operation, consumption increases the stage.User's gas heating furnace is in igniting, temperature rise period when the rear portion, gas consumption 0～30% o'clock, and branch road B-2 transmission ﹠ distribution rock gas is only opened by the branch voltage regulating station; When user's consumption enters the stabilization sub stage, consumption 30%～90% o'clock is opened the main road operation again, bears the transmission ﹠ distribution task jointly by main road and branch road B-2; When the rear portion user consumes the rock gas total amount when surpassing 90%, open branch road B-1 operation.
2. day-to-day operation stage.Main road and branch road all are in opening state during the voltage regulating station day-to-day operation, reset each road operating pressure, such as rear portion customer requirements supply pressure 50～55Kpa, main road is provided with operating pressure 54.0≤P≤55.0Kpa, branch road-2 is provided with operating pressure 52.0≤P＜54.0Kpa, and branch road-1 is provided with operating pressure 50.0≤P＜52.0Kpa.
User's rock gas operating pressure keeps 54～55Kpa generally speaking, and more than 30%, main road keeps main running state to consumption in design load.
Main road self-erecting type pressure regulator valve reaches whole opening states and rear portion pressure progressively is lower than 54Kpa when consumption surpasses 60%, and at this moment branch road-2 pressure regulator valve is opened operation, increases voltage regulating station transmission ﹠ distribution amount, guarantees that transmission ﹠ distribution pressure is not less than 52.0KPa; On the contrary, when consumption reduces, rear portion pressure progressively surpasses 54Kpa when being lower than 60% once more, at this moment branch road-2 pressure regulator valve progressively closes to zero-bit.
Main road and branch road-2 self-erecting type pressure regulator valve are in full-gear when consumption surpasses 90%, this two-way transmission ﹠ distribution amount can not satisfy the rear portion user's request, directly cause pressure to be reduced to below the 52Kpa, branch road-1 pressure regulator valve is opened, and keeps system pressure and is in 50～52Kpa scope; On the contrary, when consumption reduces, rear portion pressure progressively surpasses 52Kpa when being lower than 90% once more, at this moment branch road-1 pressure regulator valve progressively closes to zero-bit.
(2) main pressure regulator station
Main pressure regulator station runnability is similar with the branch voltage regulating station, and its transmission ﹠ distribution amount is rear portion each minute voltage regulating station respective user gas consumption sum.Its transmission ﹠ distribution amount is considered rear portion user maintenance stopping production situation less than 30% operating mode, transmission ﹠ distribution amount 30%～90% operating mode considers that all user's normal operating conditions or certain customers' gas consumption reach the design maximum situation, and the transmission ﹠ distribution amount considers that greater than 90% operating mode all user's short-term consumptions reach design load.
Embodiment: it is 1.3 Mpa that Taiyuan Iron and Steel Co. is introduced city's gas pressure, and through reducing to 0.7 Mpa after the pressure regulation of total voltage regulating station, the rock gas of 0.7 Mpa is by each service pipe line of net transmission ﹠ distribution company of co-director.For example stainless cold rolling mill production needs 0.05Mpa, 3000～12000Nm
3The rock gas of/h is provided with the branch voltage regulating station at its rock gas by-pass line, and the gas pressure of in the future autonomous pipe network is reduced to 0.05 Mpa by 0.7 Mpa by the self-erecting type pressure regulator valve, and yielding capacity was finished by common cooperation of the several self-erecting type pressure regulator valves in minute voltage regulating station; Hot continuous rolling production needs 0.03Mpa, 0～10000Nm
3The rock gas of/h is provided with the branch voltage regulating station at its rock gas by-pass line, and the gas pressure of being responsible for net is reduced to 0.03 Mpa by 0.7 Mpa by the self-erecting type pressure regulator valve, and yielding capacity is by finishing in its minute voltage regulating station common cooperation of several self-erecting type pressure regulator valves; In addition, steel works needs 0.04Mpa, 0～2000Nm
3The rock gas of/h also comes transmission ﹠ distribution to finish by a minute voltage regulating station.
Claims (4)
1. natural gas transmission and distribution method, it is characterized in that adopting total pressure regulation+minute pressure regulation, be that total voltage regulating station carries out the pressure regulation that the external high pressure rock gas is introduced, the branch voltage regulating station carries out the transmission ﹠ distribution of different user, the introduction gas pressure is 1.0～1.5Mpa, regulate back pressure through total voltage regulating station and reduce to 0.6～0.8 Mpa, pressure is that the rock gas of 0.6～0.8 Mpa enters each minute voltage regulating station, reduce to 0.03～0.06Mpa through pressure after each minute voltage regulating station pressure regulation and supply with each minute user, corresponding voltage regulating station automatic pressure regulation and the transmission ﹠ distribution amount thereof of dividing when the wherein a certain user's consumption of minute user fluctuates, total pipe pressure 0.6～0.8 Mpa is unaffected after guaranteeing total voltage regulating station, therefore other substation moves held stationary, and the main equipment of total voltage regulating station and branch voltage regulating station is a plurality of self-erecting type pressure regulator valves.
2. a kind of natural gas transmission and distribution method according to claim 1, it is characterized in that being between every self-erecting type pressure regulator valve in the branch voltage regulating station relation in parallel, different self-erecting type pressure regulator valves can be by different amount of natural gas, and the pressure after process self-erecting type pressure regulator valve is regulated is identical.
3. a kind of natural gas transmission and distribution method according to claim 1 is characterized in that every self-erecting type pressure regulator valve in the branch voltage regulating station is according to producing actual demand isolated operation or operation simultaneously.
4. a kind of natural gas transmission and distribution method according to claim 1 is characterized in that branch voltage regulating station transmission ﹠ distribution pressure according to rear portion user's needs, and the self-erecting type pressure regulator valve Operational Limits of minute voltage regulating station is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101056599A CN103225743A (en) | 2013-03-29 | 2013-03-29 | Transportation and distribution method for natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101056599A CN103225743A (en) | 2013-03-29 | 2013-03-29 | Transportation and distribution method for natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103225743A true CN103225743A (en) | 2013-07-31 |
Family
ID=48836302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101056599A Pending CN103225743A (en) | 2013-03-29 | 2013-03-29 | Transportation and distribution method for natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103225743A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006298A (en) * | 2014-06-09 | 2014-08-27 | 广西玉柴机器股份有限公司 | Multifunctional natural gas pressure adjusting cabinet |
| CN106322111A (en) * | 2016-10-10 | 2017-01-11 | 北京京诚泽宇能源环保工程技术有限公司 | Gas storage and distribution pressure-adjusting system |
| CN107228279A (en) * | 2017-07-31 | 2017-10-03 | 特瑞斯能源装备股份有限公司 | A kind of integrated natural gas line pressure testing feeder and its control method |
| CN108240488A (en) * | 2016-12-26 | 2018-07-03 | 天津市科瑞燃气设备有限公司 | A kind of intelligent gas distribution device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0940624A1 (en) * | 1998-03-02 | 1999-09-08 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Distribution station and method for expanded gas |
| CN2859180Y (en) * | 2005-11-17 | 2007-01-17 | 大连八方经济技术发展公司 | Centralized gas supply pipeline pressure reducer configuration |
| CN102588740A (en) * | 2012-02-17 | 2012-07-18 | 北京航空航天大学 | High-pressure and high-purity nitrogen distribution device for plume test platform and application method for device |
| CN202349362U (en) * | 2011-12-16 | 2012-07-25 | 北京安达维尔机械维修技术有限公司 | Remote electronic control self-operated pressure regulating valve |
| CN202390473U (en) * | 2011-12-15 | 2012-08-22 | 陕西方园冶金设备有限公司 | Argon blowing device |
| CN102654241A (en) * | 2011-03-03 | 2012-09-05 | 东京毅力科创株式会社 | Gas supplying apparatus, cylinder cabinet provided with the same, valve box, and substrate process apparatus |
| CN202746942U (en) * | 2012-07-31 | 2013-02-20 | 无锡奥维特电子科技有限公司 | High-purity gas conveying device |
-
2013
- 2013-03-29 CN CN2013101056599A patent/CN103225743A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0940624A1 (en) * | 1998-03-02 | 1999-09-08 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Distribution station and method for expanded gas |
| CN2859180Y (en) * | 2005-11-17 | 2007-01-17 | 大连八方经济技术发展公司 | Centralized gas supply pipeline pressure reducer configuration |
| CN102654241A (en) * | 2011-03-03 | 2012-09-05 | 东京毅力科创株式会社 | Gas supplying apparatus, cylinder cabinet provided with the same, valve box, and substrate process apparatus |
| CN202390473U (en) * | 2011-12-15 | 2012-08-22 | 陕西方园冶金设备有限公司 | Argon blowing device |
| CN202349362U (en) * | 2011-12-16 | 2012-07-25 | 北京安达维尔机械维修技术有限公司 | Remote electronic control self-operated pressure regulating valve |
| CN102588740A (en) * | 2012-02-17 | 2012-07-18 | 北京航空航天大学 | High-pressure and high-purity nitrogen distribution device for plume test platform and application method for device |
| CN202746942U (en) * | 2012-07-31 | 2013-02-20 | 无锡奥维特电子科技有限公司 | High-purity gas conveying device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006298A (en) * | 2014-06-09 | 2014-08-27 | 广西玉柴机器股份有限公司 | Multifunctional natural gas pressure adjusting cabinet |
| CN106322111A (en) * | 2016-10-10 | 2017-01-11 | 北京京诚泽宇能源环保工程技术有限公司 | Gas storage and distribution pressure-adjusting system |
| CN108240488A (en) * | 2016-12-26 | 2018-07-03 | 天津市科瑞燃气设备有限公司 | A kind of intelligent gas distribution device |
| CN107228279A (en) * | 2017-07-31 | 2017-10-03 | 特瑞斯能源装备股份有限公司 | A kind of integrated natural gas line pressure testing feeder and its control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103225743A (en) | Transportation and distribution method for natural gas | |
| CN104481598B (en) | A kind of online optimization of sliding pressure method of steam turbine of thermal power plant | |
| CN102787870B (en) | Method for improving primary frequency modulation capacity of heat supply unit | |
| CN103850726A (en) | Method for quickly determining stationary sliding pressing optimization curve of steam turbine | |
| CN109653810A (en) | A kind of two machine switchover operation therrmodynamic system of a furnace zone | |
| CN102191955B (en) | System for combined cycle power plant startup | |
| CN209510396U (en) | A kind of two machine switchover operation therrmodynamic system of a furnace zone | |
| CN209540521U (en) | Natural gas pressure regulating station supercharger by-pass unit | |
| CN202430106U (en) | Natural gas supply guaranteeing system of glass tank furnace | |
| CN105567902A (en) | Regulating device and method for gas chamber bypass pipe network | |
| CN205473862U (en) | Hot -blast furnace coal gas turbocharging system | |
| CN104482283B (en) | Upstream under-pressure automatic closing pressure regulator | |
| CN206329917U (en) | Double gas circuit pry regulators | |
| CN113819400B (en) | Multi-source integrated automatic switching combined steam supply system and method | |
| CN203927874U (en) | A kind of steam accumulator system | |
| CN209213462U (en) | A kind of gas pipeline hot standby regulator online | |
| CN212777304U (en) | Temperature-reducing water system | |
| CN113898423A (en) | High-efficient turbo electric power generation system of degree of depth peak regulation that unipolar was arranged | |
| CN105423132B (en) | A kind of natural gas pressure regulating system and its setting method | |
| CN106287226A (en) | A kind of gas phase LPG automatic switchover regulator | |
| CN104074561A (en) | Throttling adjusting system of cogeneration turbine unit and method of ordering power by heat | |
| CN202884474U (en) | Device for merging coke oven gas synthetic natural gas into natural gas trunk line pipe network | |
| CN204240050U (en) | A kind of blast furnace gas low energy consumption direct-supplying device | |
| CN106884689A (en) | A kind of method of small-sized steam-extracting type heat supply steam turbine steam discharge wet down | |
| CN204533699U (en) | Rectangular shape gas pressure regulator, governor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130731 |