CN203880171U - Fuel gas pressure regulating device - Google Patents
Fuel gas pressure regulating device Download PDFInfo
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- CN203880171U CN203880171U CN201420138086.XU CN201420138086U CN203880171U CN 203880171 U CN203880171 U CN 203880171U CN 201420138086 U CN201420138086 U CN 201420138086U CN 203880171 U CN203880171 U CN 203880171U
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- pressure
- switch valve
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- chamber
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Abstract
A fuel gas pressure regulating device comprises a pressure regulator, a first switch valve, a pre-regulating device and a pilot valve. The pressure regulator is provided with an upper gas chamber, a lower gas chamber, a gas inlet chamber and a gas outlet chamber. The pilot valve is provided with an upper cavity, a middle cavity and a lower cavity. The first switch valve is provided with a first gas inlet, a first gas outlet, a first specific pressure port and a first setting spring, wherein the first setting spring is used for setting first preset pressure. The first gas inlet and the first specific pressure port are communicated to the gas inlet chamber, the first gas outlet is communicated to the pre-regulating device, the pre-regulating device is communicated to the upper cavity and the middle cavity, the upper cavity is communicated to a downstream pipeline, the downstream pipeline is communicated with the gas outlet chamber, the middle cavity is communicated to the lower gas chamber, and the upper gas chamber is communicated to the downstream pipeline. According to the fuel gas pressure regulating device, the pressure of an upstream fuel gas pipe network is prevented from being too high or too low, gas is relatively supplied regularly, the pressure of the upstream fuel gas pipe network is regulated accurately in time, and compared with remote control, cost investment for gas conveying and distributing is relatively low.
Description
Technical field
The utility model relates to gas transmission and distribution field, particularly relates to a kind of for regulating Gas Pressure Regulating Equipment and the pressure regulating method of distribution pressure.
Background technique
For the operation of urban pipe network, the pressure stability in pipe network is most important, and hypotony can affect uses makings amount, and overpressure can cause potential safety hazard.Resident's cooking and hot water for life, and the use gas such as public service user has very large lack of uniformity, therefore gas-fueled vehicles, distributed combined heat and power generation and thermoelectric cold cogeneration user are in city gas application, the role who has more served as city gas pipe network peak regulation user, to reduce the pressure of gas-use low peak phase gas ductwork, eliminate safe hidden trouble.But, in actual applications, owing to peak regulation user not being adopted an effective measure, cause not using combustion gas to cause the situation of the overpressure of gas ductwork existing peak regulation user to rob the situation of gas or gas-use low peak phase peak regulation user with resident and public service user with gas peak period, give pipe network with makings amount with gas, caused safely considerable influence.
Gas Pressure Regulating Equipment is the important component part in gas transmission and distribution field.But, traditional Gas Pressure Regulating Equipment, generally only can realize the adjustment to outlet pressure, only can realize the adjusting of Gas Pressure Regulating Equipment downstream gas ductwork pressure, being difficult to realize the adjustment to inlet pressure, easily there is overpressure or too low situation in Gas Pressure Regulating Equipment upstream gas ductwork.Development along with gas transmission and distribution technology, although can carry out by the timing air feed to peak regulation user or telecontrol transmission & distribution gas the pressure of regulating gas pipe network, but, because being used time of combustion gas and consumption, gas user can follow without rule accurately, pressure regulation not in time, inaccurate, and the cost of telecontrol transmission & distribution gas is higher, be unfavorable for promoting the use of.
Model utility content
Based on this, be necessary easily to occur overpressure or too low for the upstream gas ductwork of traditional Gas Pressure Regulating Equipment, regularly pressure regulation for gas supply not in time, inaccurate, and the higher problem of telecontrol transmission & distribution gas cost, providing a kind of can adjust upstream pipe network gaseous-pressure, pressure regulation is timely, accurate, and lower-cost Gas Pressure Regulating Equipment.
A Gas Pressure Regulating Equipment, comprises pressure governor, the first switch valve, preregulator and pilot valve,
Described pressure governor has valve port and the spool of upper gas chamber, lower chamber, epithelium, suction chamber, discharge chamber, the described suction chamber of connection and described discharge chamber, and described epithelium is cut apart described upper gas chamber and described lower chamber, and described spool is connected with described epithelium;
Described pilot valve has epicoele, lumen and cavity of resorption, described the first switch valve has the first suction port, the first air outlet, the first specific pressure mouth and the first setting spring, the first preset pressure that described the first setting spring is opened for setting described the first switch valve, when the pressure of described the first specific pressure mouth is greater than the first preset pressure of described the first setting spring setting, described the first switch valve is opened, described the first suction port and described the first air outlet conducting;
Described the first suction port, described the first specific pressure mouth are communicated to described suction chamber, described the first air outlet is communicated to described preregulator, described preregulator is communicated to respectively described epicoele and described lumen, described epicoele is communicated to downstream pipeline, described downstream pipeline is connected with described discharge chamber, described lumen is communicated to described lower chamber, and described upper gas chamber is communicated to described downstream pipeline.
Therein in an embodiment, also comprise second switch valve, described second switch valve has the second suction port, the second air outlet, the second specific pressure mouth and the second setting spring, the second preset pressure that described the second setting spring is opened for setting described second switch valve, when the pressure of described the second specific pressure mouth is greater than the second preset pressure of described the second setting spring setting, described second switch valve is opened, described the second suction port and described the second air outlet conducting; Described the second suction port is communicated to described suction chamber, and described the second specific pressure mouth and described the second air outlet are communicated to respectively described preregulator, and described the first preset pressure is greater than described the second preset pressure.
In an embodiment, described pressure governor is inefficacy Normally closed type pressure governor therein, and described pilot valve is inefficacy Normally closed type pilot valve, and described the first switch valve and second switch valve are inefficacy close type switch valve.
In an embodiment, described pilot valve also has for the adjusting screw rod of pilot valve preset pressure is set therein, and the second preset pressure of described second switch valve is greater than described pilot valve preset pressure.
In an embodiment, also comprise manual switch valve therein, one end of described manual switch valve is connected to described suction chamber, and the other end is connected to described preregulator.
In an embodiment, also comprise exhaust switch valve therein, described the first air outlet is communicated to one end of described exhaust switch valve, and the other end of described exhaust switch valve is unsettled.
Above-mentioned Gas Pressure Regulating Equipment, in upstream, gas ductwork pressure is larger, when upstream pressure is greater than the first preset pressure, the spool of pressure governor is opened, and valve port conducting, is downstream pipeline air feed, alleviate the pressure of upstream gas ductwork, avoided the overpressure of upstream gas ductwork; Pressure at upstream gas ductwork is less, when the pressure of upstream is less than the first preset pressure, the spool of pressure governor keeps closing, and stops as downstream pipeline air feed, contribute to maintain the stable of upstream gas ductwork pressure, avoided the pressure of upstream gas ductwork too small.The utility model is set the first preset pressure by the first setting spring of the first switch valve, the pressure and the first preset pressure that by the first specific pressure mouth, detect pressure governor suction chamber compare, and according to the pressure of comparative result adjustment upstream gas ductwork, thereby keep the stable of upstream gas ductwork pressure, relative timing air feed, timely, accurate to the adjustment of upstream gas ductwork pressure, and the cost of telecontrol transmission & distribution gas drops into also lower relatively.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment's Gas Pressure Regulating Equipment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figure 1, in one embodiment, a kind of Gas Pressure Regulating Equipment, comprises pressure governor 110, the first switch valve 120, preregulator 130 and pilot valve 140.
Pressure governor 110 has valve port and the spool of upper gas chamber, lower chamber, epithelium, suction chamber, discharge chamber, connection suction chamber and discharge chamber, and epithelium is cut apart upper gas chamber and lower chamber, and spool is connected with epithelium, and follows epithelium action, with conducting or close port.Pressure governor 110 is inefficacy Normally closed type pressure governor.
Pilot valve 140 has epicoele, lumen and cavity of resorption, the first switch valve 120 has the first suction port, the first air outlet, the first specific pressure mouth and the first setting spring, the first preset pressure that the first setting spring is opened for setting the first switch valve 120, when the pressure of the first specific pressure mouth is greater than the first preset pressure of the first setting spring setting, the first switch valve 120 is opened, the first suction port and the first air outlet conducting.Pilot valve 140 also has for the adjusting screw rod of pilot valve 140 preset pressure is set.Pilot valve 140 is inefficacy Normally closed type pilot valve.The first switch valve 120 is inefficacy close type switch valve.
The first suction port, the first specific pressure mouth are communicated to suction chamber, and the first air outlet is communicated to preregulator 130, and preregulator 130 is communicated to respectively epicoele and lumen, epicoele is communicated to downstream pipeline, downstream pipeline is connected with discharge chamber, and lumen is communicated to lower chamber, and upper gas chamber is communicated to downstream pipeline.
Above-mentioned Gas Pressure Regulating Equipment, in upstream, gas ductwork pressure is larger, when upstream pressure is greater than the first preset pressure, the spool of pressure governor 110 is opened, and valve port conducting, is downstream pipeline air feed, alleviate the pressure of upstream gas ductwork, avoided the overpressure of upstream gas ductwork; Pressure at upstream gas ductwork is less, when the pressure of upstream is less than the first preset pressure, the spool of pressure governor 110 keeps closing, and stops as downstream pipeline air feed, contribute to maintain the stable of upstream gas ductwork pressure, avoided the pressure of upstream gas ductwork too small.The utility model is set the first preset pressure by the first setting spring of the first switch valve 120, the pressure and the first preset pressure that by the first specific pressure mouth, detect pressure governor 110 suction chambers compare, and according to the pressure of comparative result adjustment upstream gas ductwork, thereby keep the stable of upstream gas ductwork pressure, relative timing air feed, timely, accurate to the adjustment of upstream gas ductwork pressure, and the cost of telecontrol transmission & distribution gas drops into also lower relatively.
In specific embodiment, Gas Pressure Regulating Equipment also comprises second switch valve 150.Second switch valve 150 has the second suction port, the second air outlet, the second specific pressure mouth and the second setting spring, the second preset pressure that the second setting spring is opened for setting second switch valve 150, when the pressure of the second specific pressure mouth is greater than the second preset pressure of the second setting spring setting, second switch valve 150 is opened, the second suction port and the second air outlet conducting; The second suction port is communicated to suction chamber, and the second specific pressure mouth and the second air outlet are communicated to respectively preregulator 130, the first preset pressure and are greater than the second preset pressure.Second switch valve 150 is inefficacy close type switch valve, and the second preset pressure of second switch valve 150 is greater than pilot valve 140 preset pressure.
When the pressure of upstream gas ductwork surpasses the first preset pressure, when the pressure of the first specific pressure mouth is greater than the first preset pressure, the first switch valve 120 is opened, simultaneously, the pressure of the second specific pressure mouth is greater than the second preset pressure, second switch valve 150 is opened, and two switch valves are opened, and have accelerated regulating the speed to upstream gas ductwork pressure.When pressure drop to the first preset pressure of upstream gas ductwork is following, the pressure of the first specific pressure mouth is less than the first preset pressure, the first switch valve 120 cuts out, but now the pressure of the second specific pressure mouth is still greater than the second preset pressure, therefore second switch valve 150 allows in opening state, single switch valve is opened, slowed down regulating the speed to upstream gas ductwork pressure, contribute to make as early as possible upstream gas ductwork pressure to enter steady state, avoided upstream gas ductwork pressure when the transition point of the first preset pressure simultaneously, the vibration of pressure governor 110 spools that the open and close repeatedly of the first switch valve 120 causes.In addition, during below pressure drop to the first preset pressure of upstream gas ductwork and higher than the second preset pressure, second switch valve 150 is opened, the pressure of the second suction port of second switch valve 150, the pressure of the second air outlet is identical with the pressure of the second specific pressure mouth, until below pressure drop to the second preset pressure of upstream gas ductwork, second switch valve 150 cuts out, the spool slowly closing of pressure governor 110, the second air outlet of second switch valve 150 and the pressure of the second specific pressure mouth are dropped rapidly to below the second preset pressure, can not produce the open and close repeatedly of second switch valve 150.
In specific embodiment, Gas Pressure Regulating Equipment also comprises manual switch valve 160 and exhaust switch valve 170, and one end of manual switch valve is connected to suction chamber, and the other end is connected to preregulator 130.The first air outlet is communicated to one end of exhaust switch valve 170, and the other end of exhaust switch valve 170 is unsettled.Manual switch valve 160 and exhaust switch valve 170 are for the debugging at the initial stage of installing and follow-up maintenance and repair.
The above embodiment has only expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (6)
1. a Gas Pressure Regulating Equipment, is characterized in that, comprises pressure governor, the first switch valve, preregulator and pilot valve,
Described pressure governor has valve port and the spool of upper gas chamber, lower chamber, epithelium, suction chamber, discharge chamber, the described suction chamber of connection and described discharge chamber, and described epithelium is cut apart described upper gas chamber and described lower chamber, and described spool is connected with described epithelium;
Described pilot valve has epicoele, lumen and cavity of resorption, described the first switch valve has the first suction port, the first air outlet, the first specific pressure mouth and the first setting spring, the first preset pressure that described the first setting spring is opened for setting described the first switch valve, when the pressure of described the first specific pressure mouth is greater than the first preset pressure of described the first setting spring setting, described the first switch valve is opened, described the first suction port and described the first air outlet conducting;
Described the first suction port, described the first specific pressure mouth are communicated to described suction chamber, described the first air outlet is communicated to described preregulator, described preregulator is communicated to respectively described epicoele and described lumen, described epicoele is communicated to downstream pipeline, described downstream pipeline is connected with described discharge chamber, described lumen is communicated to described lower chamber, and described upper gas chamber is communicated to described downstream pipeline.
2. Gas Pressure Regulating Equipment according to claim 1, it is characterized in that, also comprise second switch valve, described second switch valve has the second suction port, the second air outlet, the second specific pressure mouth and the second setting spring, the second preset pressure that described the second setting spring is opened for setting described second switch valve, when the pressure of described the second specific pressure mouth is greater than the second preset pressure of described the second setting spring setting, described second switch valve is opened, described the second suction port and described the second air outlet conducting; Described the second suction port is communicated to described suction chamber, and described the second specific pressure mouth and described the second air outlet are communicated to respectively described preregulator, and described the first preset pressure is greater than described the second preset pressure.
3. Gas Pressure Regulating Equipment according to claim 2, is characterized in that, described pressure governor is inefficacy Normally closed type pressure governor, and described pilot valve is inefficacy Normally closed type pilot valve, and described the first switch valve and second switch valve are inefficacy close type switch valve.
4. Gas Pressure Regulating Equipment according to claim 2, is characterized in that, described pilot valve also has for the adjusting screw rod of pilot valve preset pressure is set, and the second preset pressure of described second switch valve is greater than described pilot valve preset pressure.
5. Gas Pressure Regulating Equipment according to claim 1, is characterized in that, also comprises manual switch valve, and one end of described manual switch valve is connected to described suction chamber, and the other end is connected to described preregulator.
6. Gas Pressure Regulating Equipment according to claim 5, is characterized in that, also comprises exhaust switch valve, and described the first air outlet is communicated to one end of described exhaust switch valve, and the other end of described exhaust switch valve is unsettled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138086.XU CN203880171U (en) | 2014-03-25 | 2014-03-25 | Fuel gas pressure regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138086.XU CN203880171U (en) | 2014-03-25 | 2014-03-25 | Fuel gas pressure regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203880171U true CN203880171U (en) | 2014-10-15 |
Family
ID=51680667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420138086.XU Withdrawn - After Issue CN203880171U (en) | 2014-03-25 | 2014-03-25 | Fuel gas pressure regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203880171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912704A (en) * | 2014-03-25 | 2014-07-09 | 上海飞奥燃气设备有限公司 | Gas pressure regulating device and pressure regulating method |
| CN105390170A (en) * | 2015-10-23 | 2016-03-09 | 国核自仪系统工程有限公司 | Control method of nuclear power plant failure switching-off magnetic valve control system |
-
2014
- 2014-03-25 CN CN201420138086.XU patent/CN203880171U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912704A (en) * | 2014-03-25 | 2014-07-09 | 上海飞奥燃气设备有限公司 | Gas pressure regulating device and pressure regulating method |
| CN105390170A (en) * | 2015-10-23 | 2016-03-09 | 国核自仪系统工程有限公司 | Control method of nuclear power plant failure switching-off magnetic valve control system |
| CN105390170B (en) * | 2015-10-23 | 2017-12-05 | 国核自仪系统工程有限公司 | The control method of electromagnetic valve controlling system is closed in nuclear power station failure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141015 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |