CN111271495A - Pilot valve for natural gas regulation - Google Patents
Pilot valve for natural gas regulation Download PDFInfo
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- CN111271495A CN111271495A CN202010238349.4A CN202010238349A CN111271495A CN 111271495 A CN111271495 A CN 111271495A CN 202010238349 A CN202010238349 A CN 202010238349A CN 111271495 A CN111271495 A CN 111271495A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 360
- 239000003345 natural gas Substances 0.000 title claims abstract description 180
- 239000007789 gas Substances 0.000 claims abstract description 39
- 230000001105 regulatory effect Effects 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 239000012535 impurity Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/26—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in either direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a pilot valve for regulating natural gas, which comprises a middle main body, an upper main body and a lower main body, wherein a first channel, a second channel and a third channel for natural gas to pass through are arranged in the middle main body, a first gas inlet for natural gas to enter is arranged at one side of the middle main body, a regulating mechanism is arranged in the first channel, a first pressure regulator is also arranged in the middle main body and is vertically connected with the second channel, a gas outlet, a second gas inlet and a second pressure regulator are arranged at the other side of the middle main body, a first push rod is also arranged in the middle main body, a lower valve core is arranged below the first push rod, a first flexible plate is arranged between the middle main body and the lower main body, the lower valve core is connected with the first flexible plate, an upper valve core is arranged above the first push rod, a second flexible plate is arranged between the middle main body and the upper main body, a transmission plate is arranged in the upper main body, the natural gas conveying quantity can be adjusted only through preset adjusting values.
Description
Technical Field
The invention relates to a regulating valve, in particular to a pilot valve for regulating natural gas.
Background
The existing process of conveying natural gas to a user needs to control the conveying amount of the natural gas, the natural gas conveying process is connected with a user gas pipeline through a conveying pipeline, a valve for adjusting the natural gas is arranged between the conveying pipeline and a pipeline connected with the user, the adjusted valve is used for adjusting the use value of the user in advance, the valve is adjusted and completed, the natural gas is used in different time periods, the natural gas consumption of the user is different, the natural gas amount used in the natural gas peak time period is larger, the natural gas consumption is smaller at ordinary times, and different natural gas conveying amounts need to be adjusted in different time periods.
The regulation of natural gas needs to pass through the regulating valve, change the use value that the valve was set for in advance, thereby reach regulating valve's regulation, thereby adjust the delivery capacity of natural gas, among the accommodation process of current natural gas, adjust the natural gas through pressure regulating mechanism, adjust the natural gas into the negative pressure, the natural gas through the negative pressure passes through the gas outlet and communicates with the lower terminal surface of stop valve case, thereby realize the micro-adjustment in the natural gas use, but the natural gas changes constantly in the use, need often change the regulation of natural gas, realize adjusting the delivery capacity of natural gas.
Disclosure of Invention
The invention aims to solve the technical problem that the existing director can only adjust the natural gas conveying amount through a preset adjusting value, and aims to provide a pilot valve for adjusting natural gas, which solves the problem that the existing director can only adjust the natural gas conveying amount through the preset adjusting value.
The invention is realized by the following technical scheme:
a pilot valve for regulating natural gas is characterized by comprising a middle main body, an upper main body and a lower main body, wherein a first channel, a second channel and a third channel for natural gas to pass through are arranged in the middle main body, a first gas inlet for natural gas to enter is arranged on one side of the middle main body, the first gas inlet is communicated with the first channel, a regulating mechanism is arranged in the first channel, the upper part of the first channel is communicated with the second channel, the upper part of the first channel is also communicated with the third channel, a first pressure regulator is also arranged in the middle main body, the first pressure regulator is vertically connected with the second channel, a gas outlet, a second gas inlet and a second pressure regulator are arranged on the other side of the middle main body, the gas outlet is communicated with a third pipeline, the second gas inlet is communicated with the other end of the third pipeline, the second pressure regulator is vertically connected with the third channel, the second pressure regulator is positioned between, the lower valve core is arranged below the first push rod, one end of the lower valve core is positioned in the middle main body, the other end of the lower valve core is positioned in the lower main body, a first flexible plate is arranged between the middle main body and the lower main body, the lower valve core is connected with the first flexible plate, the lower valve core moves to drive the first flexible plate to move, the upper valve core is arranged above the first push rod, one end of the upper valve core is positioned in the middle main body, the other end of the upper valve core is positioned in the upper main body, a second flexible plate is arranged between the middle main body and the upper main body, the upper valve core moves to drive the second flexible plate to move, a transmission plate is arranged in the upper main body, and.
The working principle of the invention is as follows: in the process of delivering natural gas to a user, the delivery amount of the natural gas needs to be controlled, the natural gas is connected with a user gas delivery pipeline through a delivery pipeline, a valve for adjusting the natural gas is arranged between the delivery pipeline and the pipeline connected with the user, the use amount of the natural gas in different time periods of the user is different after the valve is adjusted by presetting the use value of the user, the natural gas used in the natural gas in different time periods is larger, the natural gas used in the natural gas peak time period is smaller at ordinary times, different natural gas delivery amounts need to be adjusted in different time periods, the preset use value of the valve needs to be changed through the adjustment valve in the adjustment of the natural gas, so that the adjustment of the valve is achieved, the delivery amount of the natural gas is adjusted, in the conventional natural gas adjustment process, the natural gas is adjusted into negative pressure through a pressure adjusting mechanism, the natural gas passing through the negative pressure is communicated with the lower end face of the valve core of the stop valve through the gas outlet, so that the micro-adjustment of the natural gas in the use process is realized, but the natural gas changes constantly in the use process, the adjustment of the natural gas is required to be changed frequently, and the conveying capacity of the natural gas is adjusted A second air inlet, a second pressure regulator, an air outlet communicated with a third pipeline, a second air inlet communicated with the other end of the third pipeline, a third channel vertically connected with the second pressure regulator, a first push rod arranged in the middle main body and positioned below the first push rod, a lower valve core arranged in the middle main body and positioned in the lower main body, a first flexible plate arranged between the middle main body and the lower main body and connected with the lower valve core, a first flexible plate driven by the lower valve core to move, an upper valve core arranged above the first push rod, an upper valve core arranged in the middle main body and positioned in the upper main body, a second flexible plate arranged between the middle main body and the upper main body and driven by the upper valve core to move, a driving plate arranged in the upper main body, and a first spring arranged between the upper valve core and the driving plate, the natural gas is conveyed into the gas inlet pipe through the conveying pipe, the natural gas enters the regulating mechanism through the first pipeline, the regulating mechanism reduces the natural gas into loaded natural gas, the loaded natural gas is conveyed into the third pipeline through the first pipeline, the loaded natural gas is conveyed onto the lower end face of the valve core of the stop valve through the gas outlet and acts on the lower end face of the valve core, so that the valve core of the stop valve is pushed to move upwards, more natural gas is conveniently conveyed into a pipeline of a user, the pipeline of the user is divided into one branch pipe to be communicated with the second gas inlet pipe, the pipeline of the user is divided into the other branch pipe to be communicated with the upper end face of the valve core of the stop valve, the pressure of the natural gas in the pipeline of the user acts on the upper end face of the valve core, and the acting force of the lower end face of the stop, the pressure in the pipeline can be reduced, so that the balance state is destroyed, the acting force of the lower end face of the air outlet pipe and the stop valve is larger than the acting force of the natural gas of the user pipeline acting on the upper end face of the stop valve, the valve core of the stop valve moves upwards, more natural gas is conveyed to supplement the natural gas consumed in the user pipeline, the acting force of the upper end face and the lower end face of the valve core of the stop valve reaches the balance state again, when the natural gas in the user pipeline stops using, the pressure in the user pipeline is increased, the pressure acting on the valve core of the stop valve is increased, the acting force of the lower end face of the air outlet pipe and the stop valve is smaller than the acting force of the natural gas of the user pipeline acting on the upper end face of the stop valve, the valve core of, the natural gas in the user pipeline is mixed with the natural gas which is adjusted into the load through the adjusting mechanism by unscrewing the second pressure regulator which is vertically connected with the third pipeline, so that the acting force of the natural gas which is transmitted to the lower end face of the valve core of the stop valve can be neutralized, the fluctuation of the natural gas which is transmitted to the lower end face of the valve core of the stop valve after the pressure is adjusted, the unstable natural gas is reduced by screwing the first pressure regulator which is vertically connected with the second pipeline, the impact of the upper valve core is caused by transmitting the unstable natural gas to the lower end face of the upper valve core, and the instability of the upper valve core is further caused, so that the acting force is transmitted to the first push rod by the upper valve core, the natural gas in the first channel is caused to have larger fluctuation, the natural gas is further unstable, when the reaction time of the pilot valve is long and the reaction is slower, so that the regulated natural gas directly impacts the lower end surface of the upper valve core to enable the upper valve core to move upwards, the upper valve core drives the first push rod to move upwards, the first push rod drives the lower valve core to move upwards, when the conveying amount is reduced, the natural gas which is adjusted to be loaded is conveniently and quickly conveyed to the lower end surface of the valve core of the stop valve from the gas outlet, thereby reducing the problems of long reaction time and slow reaction of the pilot valve, optimally screwing a second pressure regulator vertical to a third pipeline, reducing the natural gas conveyed in a customer pipeline, reducing and adjusting the natural gas to be loaded, being convenient for realizing that the pilot valve quickly conveys the adjusted natural gas to the lower end surface of the valve core of the stop valve through the gas outlet, the first flexible plate realizes the sealing between the middle main body and the lower main body, the second flexible plate realizes the sealing between the middle main body and the upper main body, the regulation of natural gas delivery is realized when the micro-regulation of the natural gas is realized through the first pressure regulator and the second pressure regulator.
Further, the upper main body is provided with a cover plate above, a second push rod is arranged in the cover plate, one end of the second push rod is connected with the transmission plate, the other end of the second push rod is located outside the cover plate, an adjusting groove is arranged at the top of the second push rod, a cover body covering the other end of the second push rod is arranged above the cover plate, when the natural gas passes through the pilot valve to adjust the conveying amount, the second push rod is firstly adjusted, the second push rod drives the transmission plate to move, a first spring is arranged between valve cores on the transmission plate, the use amount of the natural gas is conveniently adjusted when the first push rod is used for controlling the conventional use, the conventional use amount of the natural gas is adjusted to a use value, when the use value is required to be changed, the cover body above the cover plate is opened, the use value of the natural gas is adjusted through.
Further, be equipped with the support ring in the first passageway, the support ring top is equipped with the filter core, crosses the filter core and is located between first air inlet and the adjustment mechanism, contains certain impurity among some impurity smugglied secretly and the natural gas among the natural gas transportation process, through the filter core that sets up in the first passageway, filters the impurity that contains among the natural gas, avoids the natural gas to carry adjustment mechanism in, causes the jam of mediation mechanism, is convenient for fixedly filter the core through the support ring that sets up.
Further, be equipped with the third air inlet that supplies the natural gas input in the lower main part, be equipped with the second spring between the inner wall of third air inlet and the lower valve core, the second spring plays the cushioning effect when being convenient for the lower valve core downstream, and then be convenient for the reseing of lower valve core, keep the operating position of lower valve core during conventional use, still be equipped with third branch pipe through the user pipeline, be convenient for transmit the pressure of user pipeline to the lower terminal surface of lower valve core on, make to drive the lower valve core motion, thereby adjust the delivery capacity of natural gas in the first pipeline, and then adjust the effort that the natural gas after the load carried the stop valve core, be convenient for adjust the volume of carrying the user pipeline from the stop valve of natural gas.
Furthermore, a first nut for fixing the lower valve core is arranged at the bottom of the first push rod, a second nut for fixing the upper valve core is arranged at the top of the first push rod, the lower valve core is convenient to fix through the arranged first nut, and the upper valve core is convenient to fix through the arranged second nut.
Furthermore, a first sealing ring is arranged between the lower valve core and the middle main body, a second sealing ring is arranged between the upper valve core and the upper main body, sealing between the lower valve core and the middle main body is convenient to realize through the arranged first sealing ring, and sealing between the upper valve core and the upper main body is convenient to realize through the arranged second sealing ring.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the pilot valve for natural gas regulation is characterized in that a first flexible board realizes the sealing between a middle main body and a lower main body, a second flexible board realizes the sealing between the middle main body and an upper main body, and the regulation of natural gas delivery is realized when the micro-regulation of natural gas is realized through a first pressure regulator and a second pressure regulator;
2. according to the pilot valve for regulating the natural gas, impurities contained in the natural gas are filtered through the filter element arranged in the first channel, the natural gas is prevented from being conveyed into the regulating mechanism to cause blockage of the regulating mechanism, and the filter element is convenient to fix through the arranged support ring;
3. according to the pilot valve for regulating the natural gas, the third branch pipe is further arranged through the user pipeline, so that the pressure of the user pipeline is conveniently transmitted to the lower end face of the lower valve core, the lower valve core is driven to move, the conveying capacity of the natural gas in the first pipeline is regulated, the acting force of the loaded natural gas conveyed to the valve core of the stop valve is further regulated, and the quantity of the natural gas conveyed from the stop valve to the user pipeline is conveniently regulated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of the structure of the present invention.
Reference numbers and corresponding part names in the drawings:
1-middle body, 2-upper body, 3-lower body, 4-first channel, 5-second channel, 6-third channel, 7-first air inlet, 8-adjusting mechanism, 9-first pressure regulator, 10-air outlet, 11-second air inlet, 12-second pressure regulator, 13-first push rod, 14-lower valve core, 15-first flexible plate, 16-upper valve core, 17-second flexible plate, 18-driving plate, 19-first spring, 20-cover plate, 21-second push rod, 22-cover body, 23-support ring, 24-filter core, 25-third air inlet, 26-second spring, 27-first nut, 28-second nut, 29-first sealing ring, 30-second sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1, the pilot valve for natural gas regulation of the present invention comprises a middle main body 1, an upper main body 2, and a lower main body 3, wherein a first channel 4, a second channel 5, and a third channel 6 for natural gas to pass through are arranged in the middle main body 1, a first gas inlet 7 for natural gas to enter is arranged at one side of the middle main body 1, the first gas inlet 7 is communicated with the first channel 4, a regulating mechanism 8 is arranged in the first channel 4, the upper side of the first channel 4 is communicated with the second channel 5, the upper side of the first channel 4 is also communicated with the third channel 6, a first pressure regulator 9 is further arranged in the middle main body 1, the first pressure regulator 9 is vertically connected with the second channel 5, a gas outlet 10, a second gas inlet 11, and a second pressure regulator 12 are arranged at the other side of the middle main body 1, the gas outlet 10 is communicated with the third channel 6, the second gas inlet 11 is communicated with the other, the second pressure regulator 12 is located between the air outlet 10 and the second air inlet 11, a first push rod 13 is further arranged in the middle main body 1, a lower valve core 14 is arranged below the first push rod 13, one end of the lower valve core 14 is located in the middle main body 1, the other end of the lower valve core 14 is located in the lower main body 3, a first flexible plate 15 is arranged between the middle main body 1 and the lower main body 3, the lower valve core 14 is connected with the first flexible plate 15, the lower valve core 14 moves to drive the first flexible plate 15 to move, an upper valve core 16 is arranged above the first push rod 13, one end of the upper valve core 16 is located in the middle main body 1, the other end of the upper valve core 16 is located in the upper main body 2, a second flexible plate 17 is arranged between the middle main body 1 and the upper main body 2, the upper valve core 16 moves to drive the second flexible plate 17, a transmission plate 18 is arranged in the.
The specific implementation mode of the invention is as follows: in the process of delivering natural gas to a user, the delivery amount of the natural gas needs to be controlled, the natural gas is connected with a user gas delivery pipeline through a delivery pipeline, a valve for adjusting the natural gas is arranged between the delivery pipeline and the pipeline connected with the user, the use amount of the natural gas in different time periods of the user is different after the valve is adjusted by presetting the use value of the user, the natural gas used in the natural gas in different time periods is larger, the natural gas used in the natural gas peak time period is smaller at ordinary times, different natural gas delivery amounts need to be adjusted in different time periods, the preset use value of the valve needs to be changed through the adjustment valve in the adjustment of the natural gas, so that the adjustment of the valve is achieved, the delivery amount of the natural gas is adjusted, in the conventional natural gas adjustment process, the natural gas is adjusted into negative pressure through a pressure adjusting mechanism, the natural gas through the negative pressure passes through the gas outlet and communicates with the lower terminal surface of stop valve case to realize the micro-adjustment in the natural gas use, nevertheless change constantly in the natural gas use, need often change the regulation of natural gas, realize adjusting the delivery capacity of natural gas.
A pilot valve for regulating natural gas is arranged, and comprises a middle main body, an upper main body and a lower main body, wherein a first channel, a second channel and a third channel for natural gas to pass through are arranged in the middle main body, a first gas inlet for natural gas to enter is arranged on one side of the middle main body, the first gas inlet is communicated with the first channel, a regulating mechanism is arranged in the first channel, the upper part of the first channel is communicated with the second channel, the upper part of the first channel is also communicated with the third channel, a first pressure regulator is also arranged in the middle main body, the first pressure regulator is vertically connected with the second channel, a gas outlet, a second gas inlet and a second pressure regulator are arranged on the other side of the middle main body, the gas outlet is communicated with a third pipeline, the second gas inlet is communicated with the other end of the third pipeline, the second pressure regulator is vertically connected with the third channel, the second pressure regulator, the lower valve core is arranged below the first push rod, one end of the lower valve core is positioned in the middle main body, the other end of the lower valve core is positioned in the lower main body, a first flexible plate is arranged between the middle main body and the lower main body, the lower valve core is connected with the first flexible plate, the lower valve core moves to drive the first flexible plate to move, the upper valve core is arranged above the first push rod, one end of the upper valve core is positioned in the middle main body, the other end of the upper valve core is positioned in the upper main body, a second flexible plate is arranged between the middle main body and the upper main body, the upper valve core moves to drive the second flexible plate to move, a transmission plate is arranged in the upper main body, and.
The natural gas is conveyed into the gas inlet pipe through the conveying pipe, the natural gas enters the regulating mechanism through the first pipeline, the regulating mechanism reduces the natural gas into loaded natural gas, the loaded natural gas is conveyed into the third pipeline through the first pipeline, the loaded natural gas is conveyed onto the lower end face of the valve core of the stop valve through the gas outlet and acts on the lower end face of the valve core, so that the valve core of the stop valve is pushed to move upwards, more natural gas is conveniently conveyed into a pipeline of a user, the pipeline of the user is divided into one branch pipe to be communicated with the second gas inlet pipe, the pipeline of the user is divided into the other branch pipe to be communicated with the upper end face of the valve core of the stop valve, the pressure of the natural gas in the pipeline of the user acts on the upper end face of the valve core, and the acting force of the lower end face of the stop, pressure in the pipeline can reduce, make the balanced state destroyed, the effort of terminal surface is greater than the effort that user's pipeline natural gas acted on the stop valve up end under outlet duct and the stop valve, make the case upward movement of stop valve, make the natural gas that carries more natural gas and supply consumption in the user's pipeline, make the effort of terminal surface reach balanced state again about the stop valve case, when natural gas stops using in the user's pipeline, the pressure increase that acts on the stop valve case, the effort of terminal surface is less than the effort that user's pipeline natural gas acted on the stop valve up end under outlet duct and the stop valve, make stop valve case downward movement, until stop valve case closes completely, no longer to carrying the natural gas in.
When the pressure of the natural gas conveyed to the valve core of the stop valve by the gas outlet is unstable and fluctuates greatly, the second pressure regulator vertically connected with the third pipeline is unscrewed, so that the natural gas in the user pipeline is mixed with the natural gas which is regulated into a load by the regulating mechanism, the acting force of the gas outlet conveyed to the lower end face of the valve core of the stop valve is neutralized conveniently, the fluctuation of the natural gas conveyed to the lower end face of the valve core of the stop valve after pressure regulation load is reduced, the unstable natural gas is conveyed to the lower end face of the upper valve core by screwing the first pressure regulator vertically connected with the second pipeline, the impact of the upper valve core is caused, the instability of the upper valve core is further caused, the acting force is transmitted to the first push rod by the upper valve core, the natural gas in the first channel is fluctuated greatly, the natural gas is made to be more unstable, and when the reaction time of the pilot valve is long and the reaction is slow The device comprises an upper valve core, a lower valve core, a first push rod, a second pressure regulator, a first pressure regulator, a second flexible plate, a second pressure regulator and a third pressure regulator, wherein the lower end face of the upper valve core is directly impacted by the regulated natural gas, the upper valve core moves upwards, the upper valve core drives the first push rod to move upwards, the first push rod drives the lower valve core to move upwards, when the conveying amount is reduced, the natural gas regulated into the load is conveniently and quickly conveyed onto the lower end face of the valve core of the stop valve from a gas outlet, the problems of long reaction time and slow reaction of the pilot valve are solved, the second pressure regulator is preferably screwed to be perpendicular to a third pipeline, the natural gas conveyed in a customer pipeline is reduced, the mixing of the natural gas regulated into the load natural gas is reduced, the regulated natural gas is conveniently and quickly conveyed onto the lower end face of the valve core of the, The second pressure regulator realizes the regulation of natural gas delivery when realizing the trace regulation of natural gas.
Example 2
Based on embodiment 1, as shown in fig. 1, in the pilot valve for natural gas adjustment according to the present invention, a cover plate 20 is disposed above an upper main body 2, a second push rod 21 is disposed in the cover plate 20, one end of the second push rod 21 is connected to a transmission plate 18, the other end of the second push rod 21 is located outside the cover plate 20, an adjustment groove is disposed at the top of the second push rod 21, a cover body 22 that covers the other end of the second push rod 21 is disposed above the cover plate 20, a support ring 23 is disposed in a first channel 4, a filter core 24 is disposed above the support ring 23, and the filter core 24 is located between a first air inlet 7 and an adjustment.
The specific implementation mode of the invention is as follows: a cover plate is arranged above the upper main body, a second push rod is arranged in the cover plate, one end of the second push rod is connected with the transmission plate, the other end of the second push rod is positioned outside the cover plate, an adjusting groove is arranged at the top of the second push rod, a cover body for coating the other end of the second push rod is arranged above the cover plate, when the conveying amount of the natural gas is adjusted through a pilot valve, the second push rod is firstly adjusted, the second push rod drives the transmission plate to move, a first spring is arranged between valve cores on the transmission plate, the adjustment of the first push rod is convenient to control the using amount of the natural gas in the conventional use, the conventional using amount of the natural gas is adjusted to a using value, when the using value needs to be changed, the cover body above the cover plate is opened, the using value of the natural gas is adjusted through the adjusting groove, the cover body is closed after the, the filter element is located between the first air inlet and the adjusting mechanism, certain impurities are contained in some impurities and natural gas in the natural gas conveying process, the impurities contained in the natural gas are filtered through the filter element arranged in the first channel, the natural gas is prevented from being conveyed to the adjusting mechanism to cause blockage of the adjusting mechanism, and the filter element is convenient to fix through the support ring.
Example 3
Based on the above embodiments, as shown in fig. 1, the pilot valve for natural gas regulation according to the present invention includes a third air inlet 25 for inputting natural gas in the lower main body 3, a second spring 26 is disposed between an inner wall of the third air inlet 25 and the lower valve core 14, a first nut 27 for fixing the lower valve core 14 is disposed at the bottom of the first push rod 13, a second nut 28 for fixing the upper valve core 16 is disposed at the top of the first push rod 13, a first sealing ring 29 is disposed between the lower valve core 14 and the middle main body 1, and a second sealing ring 30 is disposed between the upper valve core 16 and the upper main body 2.
The specific implementation mode of the invention is as follows: a third air inlet for inputting natural gas is arranged in the lower main body, a second spring is arranged between the inner wall of the third air inlet and the lower valve core, the second spring is convenient for playing a role of buffering when the lower valve core moves downwards and further is convenient for resetting the lower valve core, the working position of the lower valve core is kept when the lower valve core is used in a conventional way, a third branch pipe is also arranged through a user pipeline and is convenient for transmitting the pressure of the user pipeline to the lower end surface of the lower valve core so as to drive the lower valve core to move, thereby adjusting the conveying amount of the natural gas in the first pipeline and further adjusting the acting force of the natural gas after loading conveyed to the valve core of the stop valve and being convenient for adjusting the conveying amount of the natural gas from the stop valve to the user pipeline, a first nut for fixing the lower valve core is arranged at the bottom of the first push rod, a second nut for fixing the upper valve core is arranged at the top of the first push, a first sealing ring is arranged between the lower valve core and the middle main body, a second sealing ring is arranged between the upper valve core and the upper main body, sealing between the lower valve core and the middle main body is convenient to realize through the arranged first sealing ring, and sealing between the upper valve core and the upper main body is convenient to realize through the arranged second sealing ring.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A pilot valve for natural gas regulation is characterized by comprising a middle main body (1), an upper main body (2) and a lower main body (3), wherein a first channel (4), a second channel (5) and a third channel (6) for natural gas to pass through are arranged in the middle main body (1), a first air inlet (7) for natural gas to enter is arranged on one side of the middle main body (1), the first air inlet (7) is communicated with the first channel (4), a regulating mechanism (8) is arranged in the first channel (4), the upper portion of the first channel (4) is communicated with the second channel (5), the upper portion of the first channel (4) is also communicated with the third channel (6), a first pressure regulator (9) is also arranged in the middle main body (1), the first pressure regulator (9) is vertically connected with the second channel (5), an air outlet (10), a second air inlet (11) and a second pressure regulator (12) are arranged on the other side of the middle main body (1, the air outlet (10) is communicated with the third pipeline (6), the second air inlet (11) is communicated with the other end of the third pipeline (6), the second pressure regulator (12) is vertically connected with the third channel (6), the second pressure regulator (12) is positioned between the air outlet (10) and the second air inlet (11), a first push rod (13) is further arranged in the middle main body (1), a lower valve core (14) is arranged below the first push rod (13), one end of the lower valve core (14) is positioned in the middle main body (1), the other end of the lower valve core (14) is positioned in the lower main body (3), a first flexible plate (15) is arranged between the middle main body (1) and the lower main body (3), the lower valve core (14) is connected with the first flexible plate (15), the lower valve core (14) moves to drive the first flexible plate (15), an upper valve core (16) is arranged above the first push rod (13), one end of the upper valve core (16) is positioned in the middle main body, the other end of the upper valve core (16) is positioned in the upper main body (2), a second flexible plate (17) is arranged between the middle main body (1) and the upper main body (2), the upper valve core (16) moves to drive the second flexible plate (17) to move, a transmission plate (18) is arranged in the upper main body (2), and a first spring (19) is arranged between the upper valve core (16) and the transmission plate (18).
2. A pilot valve for natural gas adjustment according to claim 1, wherein a cover plate (20) is arranged above the upper main body (2), a second push rod (21) is arranged in the cover plate (20), one end of the second push rod (21) is connected with the driving plate (18), the other end of the second push rod (21) is located outside the cover plate (20), an adjusting groove is arranged at the top of the second push rod (21), and a cover body (22) for covering the other end of the second push rod (21) is arranged above the cover plate (20).
3. A pilot valve for natural gas regulation according to claim 1, characterised in that a support ring (23) is provided in the first passage (4), a filter element (24) is provided above the support ring (23), and the filter element (24) is located between the first gas inlet (7) and the regulating mechanism (8).
4. A pilot valve for natural gas regulation according to claim 1, characterized in that a third inlet (25) for natural gas is provided in the lower body (3), and a second spring (26) is provided between the inner wall of the third inlet (25) and the lower valve core (14).
5. A pilot valve for natural gas regulation according to claim 1, characterized in that the first push rod (13) is provided with a first nut (27) at the bottom for fixing the lower valve core (14) and a second nut (28) at the top for fixing the upper valve core (16).
6. A pilot valve for natural gas regulation according to claim 1, characterized in that a first sealing ring (29) is provided between the lower valve spool (14) and the middle body (1), and a second sealing ring (30) is provided between the upper valve spool (16) and the upper body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010238349.4A CN111271495A (en) | 2020-03-30 | 2020-03-30 | Pilot valve for natural gas regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010238349.4A CN111271495A (en) | 2020-03-30 | 2020-03-30 | Pilot valve for natural gas regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111271495A true CN111271495A (en) | 2020-06-12 |
Family
ID=70996156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010238349.4A Pending CN111271495A (en) | 2020-03-30 | 2020-03-30 | Pilot valve for natural gas regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111271495A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201428929Y (en) * | 2009-07-07 | 2010-03-24 | 袁勇 | Direct action type pressure regulator for super-high pressure |
| CN201496083U (en) * | 2009-09-09 | 2010-06-02 | 四川神坤装备股份有限公司 | Hand-operated pilot valve |
| CN105423132A (en) * | 2015-12-09 | 2016-03-23 | 高拓石油天然气技术（上海）有限责任公司 | Natural gas pressure regulating system and setting method thereof |
| CN107061821A (en) * | 2017-04-25 | 2017-08-18 | 四川省犍为峨山阀门有限责任公司 | A kind of pressure regulator pilot valve |
-
2020
- 2020-03-30 CN CN202010238349.4A patent/CN111271495A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201428929Y (en) * | 2009-07-07 | 2010-03-24 | 袁勇 | Direct action type pressure regulator for super-high pressure |
| CN201496083U (en) * | 2009-09-09 | 2010-06-02 | 四川神坤装备股份有限公司 | Hand-operated pilot valve |
| CN105423132A (en) * | 2015-12-09 | 2016-03-23 | 高拓石油天然气技术（上海）有限责任公司 | Natural gas pressure regulating system and setting method thereof |
| CN107061821A (en) * | 2017-04-25 | 2017-08-18 | 四川省犍为峨山阀门有限责任公司 | A kind of pressure regulator pilot valve |
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Application publication date: 20200612 |