WO2016067991A1 - ガス圧力調整装置 - Google Patents

ガス圧力調整装置 Download PDF

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Publication number
WO2016067991A1
WO2016067991A1 PCT/JP2015/079676 JP2015079676W WO2016067991A1 WO 2016067991 A1 WO2016067991 A1 WO 2016067991A1 JP 2015079676 W JP2015079676 W JP 2015079676W WO 2016067991 A1 WO2016067991 A1 WO 2016067991A1
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WO
WIPO (PCT)
Prior art keywords
pressure
pilot
loop
governor
main
Prior art date
Application number
PCT/JP2015/079676
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
誠一郎 浅野
秀雄 和田
靖治 細原
長田　耕一
丹羽　浩志
文雄 戸木
Original Assignee
長野都市ガス株式会社
株式会社桂精機製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 長野都市ガス株式会社, 株式会社桂精機製作所 filed Critical 長野都市ガス株式会社
Priority to SG11201702870QA priority Critical patent/SG11201702870QA/en
Priority to CN201580058344.0A priority patent/CN107003683B/zh
Priority to RU2017118398A priority patent/RU2659348C1/ru
Publication of WO2016067991A1 publication Critical patent/WO2016067991A1/ja

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/14—Control of fluid pressure with auxiliary non-electric power
    • G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid

Definitions

  • the present invention relates to a governor (a gas pressure adjusting device) using a pilot governor, in which a gas or the like transported at a primary pressure from the upstream side is decompressed to a secondary pressure and supplied to the downstream side in the gas supply system.
  • upstream pipe the gas transported by the primary pressure (high pressure / medium pressure) in the upstream transport pipe (hereinafter referred to as “upstream pipe”) is set to the preset secondary side set pressure.
  • a gas pressure adjusting device gas governor
  • downstream pipe the downstream transport pipe
  • the conventional gas governor is generally connected to a main valve (governor body) 11 that adjusts the amount of gas from upstream to downstream, and a downstream pipe 13.
  • a pilot governor 21 that controls the governor body 11 in response to a change in P2 (referred to as “secondary pressure”) is provided.
  • the pilot governor 21 is set to operate the main valve (governor body) 11 to supply gas downstream when the secondary pressure P2 becomes equal to or lower than a predetermined reference operation control pressure Ps.
  • a gas pressure adjusting device using such a pilot governor 21 has a conflicting characteristic that if the responsiveness to pressure fluctuations on the downstream side is improved, the tilt is likely to occur, and if the occurrence of the tilt is suppressed, the responsiveness is deteriorated. was there.
  • Patent Document 1 In order to avoid such a state where the response is delayed and the secondary pressure P2 is extremely reduced, a prior art for improving response characteristics while suppressing the occurrence of tilt is described in Patent Document 1 as shown in FIG. The technology has been proposed.
  • Patent Document 1 includes a sub pilot governor SC in addition to the main pilot governor SB.
  • the downstream pipe 13 side of the sub pilot governor SC is connected to the main pilot line S26 that connects the main pilot governor SB to the downstream pipe 13 via the sub pilot line S28. Further, the operation setting pressure of the sub pilot governor SC is set lower than that of the main pilot governor SB.
  • the present invention has been made in view of the above problems, and is capable of obtaining a quick response characteristic while suppressing the occurrence of tilting, and can stably ensure a sufficient flow rate ( It aims to provide gas governor).
  • the gas pressure adjusting device has been made in view of the above-mentioned problems of the prior art, and reduces the gas that is installed in the middle of a pipeline and transported at the primary pressure from the upstream side to the secondary pressure.
  • a main valve that flows downstream, A main pilot loop for connecting the upstream pipe line and the downstream pipe line of the main valve via a restrictor; Provided on the downstream side of the restrictor in the main pilot loop, and when the secondary pressure falls below a predetermined reference operation control pressure, control the amount of gas passing through the main pilot loop, A main pilot governor for controlling the operation of the main valve so that the secondary pressure is constant;
  • a subpilot loop having one end connected between the restrictor of the main pilot loop and the main pilot governor, and the other end connected to the downstream pipe line through a path different from the main pilot loop; Provided in the sub-pilot loop, and controlling the amount of gas passing through the sub-pilot loop when the secondary pressure becomes a second reference pressure lower than the reference operation control pressure.
  • the responsiveness can be further improved.
  • the main pilot is connected by setting the connection point to the downstream pipe of the subpilot loop to a position different from that of the main pilot loop, and making the subpilot loop a separate path different from the main pilot loop. Stable operation is possible without affecting the governor.
  • FIG. 1 It is a figure showing one embodiment of the gas pressure regulation device concerning the present invention. It is a figure which shows an example of the main valve (gas governor main body) used for the gas pressure regulator which concerns on this invention. It is a graph which shows typically the change of the secondary pressure which shows the dynamic characteristic of a gas pressure regulator, when the secondary pressure falls in a blockade state, (a) is the secondary pressure when there is no subpilot governor. (B) is a graph which shows the change of the secondary pressure at the time of providing a subpilot governor. It is a figure which shows other embodiment of the gas pressure regulator which concerns on this invention. It is a schematic diagram which shows the connection form to the downstream pipe
  • FIG. 1 It is a figure which shows a dynamic characteristic when increasing a flow volume to 100 m ⁇ 3 > / h. It is a schematic diagram which shows the structure of the gas pressure regulator which concerns on a prior art. It is a figure which shows the structure of the gas pressure apparatus which concerns on patent document 1.
  • FIG. 1 It is a figure which shows a dynamic characteristic when increasing a flow volume to 100 m ⁇ 3 > / h. It is a schematic diagram which shows the structure of the gas pressure regulator which concerns on a prior art. It is a figure which shows the structure of the gas pressure apparatus which concerns on patent document 1. FIG.
  • FIG. 1 is a diagram illustrating an example of a configuration of a gas pressure adjusting device 10 according to the present invention
  • FIG. 2 is a diagram schematically illustrating an example of a main valve (governor body) 11.
  • the same number is used for the part which has the same function as the prior art shown in FIG.
  • This gas pressure adjusting device 10 has a main valve 11 that is installed in the middle of a pipeline and that reduces the gas transported from the upstream side at the primary pressure P1 to the secondary pressure P2 and flows it downstream.
  • the axial flow type governor employed as the main valve 11 in the present embodiment is currently widely used.
  • the schematic structure thereof is a pair of drum-shaped closures 16 having a large number of slits on the peripheral surface, a rubber sleeve 17 for closing the slits of the closure 16, and a cylindrical valve body 18 for housing these.
  • the control pressure Pc is applied to the space between the valve body 18 and the sleeve 17 so that the slits of the pair of drum-shaped closures 16 are opened and closed by the sleeve 17.
  • the gas pressure adjusting device 10 of the present invention is provided with a pilot loop in which an upstream pipe 12 and a downstream pipe 13 are connected so as to bypass the main valve 11.
  • the pilot loop includes a main pilot loop 20 and a subpilot loop 30.
  • Both the main pilot loop 20 and the subpilot loop 30 are connected to the upstream pipe line 12 at the connection point C1, and the restrictor 14 is provided on the upstream pipe side.
  • the restrictor 14 generates a control pressure Pc that controls the operation of the main valve 11.
  • the output side of the restrictor 14 has a main pilot loop 20 connected to the downstream pipe line 13 at the connection point C 2 of the downstream pipe line 13 and a sub pilot loop 30 connected to the downstream pipe line 13 at the connection point C 3 . It is divided into two routes.
  • the main pilot loop 20 is provided with a main pilot governor 21 between the restrictor 14 and the connection point C2, and the sub-pilot loop 30 is provided with a sub-pilot governor 31 between the restrictor 14 and the connection point C3. Provided.
  • the output of the restrictor 14 is connected to the main valve 11 via the conduit 40 and supplies the control pressure Pc to the main valve 11.
  • the sub pilot governor 31 and the main pilot governor 21 operate to decrease the control pressure Pc, and the main valve 11 opens in proportion to the decrease in the control pressure Pc.
  • the main valve 11 is opened, gas is supplied from the upstream pipe 12 to the downstream pipe 13.
  • a downstream secondary pressure P ⁇ b> 2 is supplied to the main pilot governor 21 via the main pilot line 20.
  • the main pilot governor 21 is adjusted using spring pressure and atmospheric pressure so that a valve connected to a diaphragm provided therein opens when the secondary pressure P2 becomes equal to or lower than a predetermined reference operation control pressure Ps. ing.
  • the atmospheric bleed diaphragm 22 is a diaphragm that changes the size of the opening to the atmospheric pressure, and thereby adjusts the response sensitivity of the main pilot governor 21.
  • the main valve 11 When the responsiveness of the main pilot governor 21 is improved, the main valve 11 is opened at once and the secondary pressure P2 is rapidly increased. Therefore, the opening and closing of the main pilot governor 21 is repeated and the tilt is likely to occur. Since the occurrence of tilt is extremely undesirable for the gas pressure adjusting device from the viewpoint of stable control, the air bleed restrictor 22 of the main pilot governor 21 is adjusted so as to suppress tilt even if the responsiveness is somewhat deteriorated.
  • the sub-pilot governor 31 has substantially the same structure and function as the main pilot governor 21. However, the sub-pilot governor 31 may not have an air bleed aperture function. Further, the sub pilot governor 31 assists the rising response of the main pilot governor 21 and therefore may have a smaller flow rate than the main pilot governor 21. For example, the sub-pilot governor 31 may have a flow rate about 1/3 that of the main pilot governor 21.
  • the sub-pilot governor 31 is adjusted so as to operate at an operation control pressure Pss higher than the reference operation control pressure Ps of the main pilot governor, and has good responsiveness. Further, since the sub-pilot governor 31 has a small flow rate, the control pressure Pc is hardly lowered and the tilt is hardly generated.
  • the operation control pressure Ps of the main pilot governor can be set to 2.2 kPa, and the operation control pressure Pss of the sub main pilot governor can be set to around 2.5 kPa.
  • the subpilot governor 31 when the secondary pressure P2 on the downstream side decreases and becomes equal to or lower than the operation control pressure Pss of the subpilot governor, the subpilot governor 31 is first opened, and the gas flows into the upstream pipe. 12 flows through the subpilot loop 30 to the downstream pipe 13. As a result, the control pressure Pc in the downstream pipe line 40 of the restrictor 14 decreases.
  • the control pressure Pc of the main valve 11 decreases, the main valve 11 opens and gas is supplied from the upstream pipe 12 to the downstream pipe 13.
  • a variable throttle 23 is provided on the downstream pipe 13 side of the subpilot loop 30 as shown in FIG. You may do it. Whether or not the variable diaphragm 23 is provided is arbitrary.
  • FIG. 3 is a graph schematically showing changes in the secondary pressure when the gas pressure adjusting device is operated from the state where the main valve 11 is closed.
  • (a) shows a case where adjustment is performed by a gas pressure adjusting device having a configuration with only the main pilot loop 20 and no sub-pilot loop 30, and
  • (b) shows the main pilot loop 20 and the sub-pilot loop 30 having the configuration of the present invention. The case where it adjusts with the gas pressure adjusting device of the structure provided with both is shown.
  • the subpilot governor 31 is activated as soon as the secondary pressure falls to the operation control pressure Pss of the subpilot governor 31, and the control pressure Pc of the main valve 11 is lowered.
  • the main valve 11 is opened, even if the main pilot governor 21 does not respond immediately, gas is supplied from the upstream pipe 12 to the downstream pipe 13. Therefore, the secondary pressure P2 does not extremely decrease.
  • the main pilot governor 21 is also activated with a delay, so the secondary pressure P2 is immediately adjusted to a predetermined set pressure (operation control pressure Ps), and no tilt occurs. .
  • the responsiveness of the main pilot governor 21 is lowered and the tilt is suppressed, the responsiveness can be improved as a whole gas pressure adjusting device.
  • the connection paths from the main pilot governor 21 and the subpilot governor 31 to the downstream pipe 13 are different from each other. Therefore, even if the subpilot governor 31 operates, the secondary pressure P2 supplied to the main pilot loop 20 is not affected. Accordingly, the main pilot governor 21 can perform a stable control operation according to the actual secondary pressure P2 of the downstream pipe 13.
  • FIG. 4 shows a second embodiment of the present invention
  • FIG. 5 is a schematic diagram showing a connection form of the subpilot loop 30 to the downstream pipe 13 in the second embodiment and other embodiments.
  • connection position C 3 ′ of the sub-pilot loop 30 to the downstream pipe line 13 is connected to a venturi narrow pipe portion 53 provided in the downstream pipe.
  • connection position of the sub-pilot loop 30 to the downstream pipe 13 may be provided in the vicinity of the portion C 3 ′′ where the pipe line in the vicinity of the entrance from the main valve to the downstream pipe line spreads abruptly.
  • FIG. 6 to 8 are graphs comparing the dynamic characteristics of the secondary pressure P2 and the flow rate Q during pressure adjustment by the gas pressure adjusting device according to the present invention and the conventional pressure adjusting device.
  • Figure (a) of 6-8 the configuration of the present invention, i.e. as shown FIG. 1, integer branched downstream pipe side of the main pilot loop 20 secondary pressure P2 on the downstream pipe 13 from a stable place C 2
  • a structure in which the downstream pipe side of the sub pilot loop 30 is connected to a position C 3 near the outlet of the downstream pipe 13 different from the connection position C 2 of the main pilot loop 30 (hereinafter referred to as “Example 1”). ) Shows the measurement results of the P2-Q dynamic characteristics of the gas pressure adjusting device.
  • the downstream pipe side of the main pilot loop 20 of the gas pressure adjusting device of FIG. 1 is connected to the pressure regulating pipe as in the first embodiment, and the downstream pipe side of the sub pilot loop 30 is connected to the main pipe.
  • the measurement results of the P2-Q dynamic characteristics of the configuration (hereinafter referred to as “Comparative Example 1”) connected to the pressure regulating tube at the same position C 2 as the pilot loop 20 are shown.
  • FIG. 6 to FIG. 8C show the measurement results of the dynamic characteristics of P2-Q of the gas pressure adjusting device configured to control the adjustment of the secondary pressure P2 only by the main pilot loop without providing the subpilot loop 30. (Hereinafter referred to as “Comparative Example 2”).
  • 6 to 8 show cases where the primary pressure P1 is changed to 0.2 MPa, 0.25 MPa, and 0.3 MPa, respectively. 6 to 8, the flow rate Q is 50 m 3 / h.
  • the secondary pressure P2 is equal to the primary pressure P1 regardless of the primary pressure P1. It is maintained in a stable state.
  • the secondary pressure P2 remains even after the transient vibration at the start of adjustment has subsided. The fluctuation (vibration) is relatively large up and down (see (c) of FIGS. 6 to 8).
  • FIGS. 9A to 9C show dynamic characteristics when the flow rate Q is increased to 100 m 3 / h and the primary pressure P1 is increased to 0.2 MPa, 0.25 MPa, and 0.3 MPa, respectively.
  • . 9A to 9C show the dynamic characteristics in the configuration of the first embodiment of the present invention on the left side, and the dynamic characteristics of Comparative Example 1 are compared on the right side.
  • FIG. 9 does not show the comparative example 2, when the main valve 11 is closed, the secondary pressure P2 in the comparative example 2 also rises abruptly as in the comparative example 1 or more. .
  • the connections on the downstream pipe side of the main pilot loop 20 and the sub-pilot loop 30 are set to different positions C 2 and C 3 , and the loops 20 and 30 are set to different paths independently.
  • venturi 51 in the downstream pipe and connecting the downstream pipe side of the sub-pilot loop 30 to the narrow pipe portion of the venturi 51, the responsiveness when the main valve 11 is opened can be further improved.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Control Of Fluid Pressure (AREA)
PCT/JP2015/079676 2014-10-31 2015-10-21 ガス圧力調整装置 WO2016067991A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SG11201702870QA SG11201702870QA (en) 2014-10-31 2015-10-21 Gas pressure regulating device
CN201580058344.0A CN107003683B (zh) 2014-10-31 2015-10-21 气体压力调整装置
RU2017118398A RU2659348C1 (ru) 2014-10-31 2015-10-21 Устройство регулирования давления газа

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014223153A JP6335757B2 (ja) 2014-10-31 2014-10-31 ガス圧力調整装置
JP2014-223153 2014-10-31

Publications (1)

Publication Number Publication Date
WO2016067991A1 true WO2016067991A1 (ja) 2016-05-06

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PCT/JP2015/079676 WO2016067991A1 (ja) 2014-10-31 2015-10-21 ガス圧力調整装置

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JP (1) JP6335757B2 (zh)
CN (1) CN107003683B (zh)
MY (1) MY179014A (zh)
RU (1) RU2659348C1 (zh)
SG (1) SG11201702870QA (zh)
TW (1) TWI652561B (zh)
WO (1) WO2016067991A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2766837C1 (ru) * 2021-06-25 2022-03-16 Роман Анатольевич Реймер Регулятор давления газа

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08171425A (ja) * 1994-12-19 1996-07-02 Tokico Ltd 圧力制御装置
JPH11212656A (ja) * 1998-01-30 1999-08-06 Osaka Gas Co Ltd 整圧機構
JP2012500938A (ja) * 2008-08-29 2012-01-12 デルファイ・テクノロジーズ・ホールディング・エス．アー．エール．エル． 改良燃料圧力調整システム及びこのシステムで使用するための改良燃料圧力調整器
JP2012098819A (ja) * 2010-10-29 2012-05-24 Ito Koki Co Ltd 整圧器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5722242Y2 (zh) * 1976-12-02 1982-05-14
JP3237925B2 (ja) * 1992-10-27 2001-12-10 大阪瓦斯株式会社 圧力制御装置とその圧力設定方法
CN1163804C (zh) * 1997-02-06 2004-08-25 Smc株式会社 气动调节器
JP4488945B2 (ja) * 2005-03-31 2010-06-23 大阪瓦斯株式会社 整圧装置
JP4454533B2 (ja) * 2005-05-16 2010-04-21 東京瓦斯株式会社 圧力調整器
JP5319056B2 (ja) * 2006-08-01 2013-10-16 トヨタ自動車株式会社 燃料電池システム
JP5547608B2 (ja) * 2010-11-04 2014-07-16 東京瓦斯株式会社 整圧装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08171425A (ja) * 1994-12-19 1996-07-02 Tokico Ltd 圧力制御装置
JPH11212656A (ja) * 1998-01-30 1999-08-06 Osaka Gas Co Ltd 整圧機構
JP2012500938A (ja) * 2008-08-29 2012-01-12 デルファイ・テクノロジーズ・ホールディング・エス．アー．エール．エル． 改良燃料圧力調整システム及びこのシステムで使用するための改良燃料圧力調整器
JP2012098819A (ja) * 2010-10-29 2012-05-24 Ito Koki Co Ltd 整圧器

Also Published As

Publication number Publication date
CN107003683A (zh) 2017-08-01
JP6335757B2 (ja) 2018-05-30
TW201624164A (zh) 2016-07-01
TWI652561B (zh) 2019-03-01
JP2016091199A (ja) 2016-05-23
RU2659348C1 (ru) 2018-06-29
SG11201702870QA (en) 2017-05-30
MY179014A (en) 2020-10-26
CN107003683B (zh) 2020-03-20

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