CN210637167U - Gas regulating valve - Google Patents

Abstract

The utility model provides a gas regulating valve belongs to mechanical technical field. The gas regulating valve solves the problem that liquid is easy to be contained in gas after the pressure of the existing gas regulating valve is reduced, so that the gas pressure is unstable. This gas governing valve, including the casing that has air inlet and gas outlet, be equipped with inlet channel and decompression chamber in the casing, the gas outlet is linked together with the decompression chamber, the last stop valve that is equipped with of inlet channel, be equipped with the negative pressure chamber in the casing, be equipped with drive diaphragm one and actuating lever one on the negative pressure chamber, inlet channel's outer end links to each other with the air inlet, inlet channel's the inner is linked together with the decompression chamber, be equipped with drive diaphragm two and end cap in the decompression chamber, drive diaphragm two can drive the end cap and remove the inner shutoff with inlet channel, be equipped with the rib in the decompression chamber, and the rib forms foretell passageway of giving vent to anger, the downside that is located the gas outlet on. This gas governing valve has the advantage that can make the atmospheric pressure of the gas after the decompression stable.

Description

Gas regulating valve

Technical Field

The utility model belongs to the technical field of machinery, a governing valve, especially a gas governing valve are related to.

Background

Conventionally, a gas engine is an engine using gas as a fuel. As the fuel gas vaporizes, tar separates from the gas and adversely affects components disposed in the fuel passageway. For example, tar adheres to rubber parts such as a diaphragm to damage the rubber parts; adheres to the fuel injection hole to block the injection hole; sticking to the valve causing misalignment of the valve on the valve seat.

For example, the automobile engine gas pressure reducing regulator (application number: 97210103.9) disclosed in the Chinese patent document comprises an air inlet pipe, a regulating device and an air outlet pipe, wherein the regulating device is a graded pressure regulating structure formed by three decompression chambers which are communicated with each other, each decompression chamber is divided into an air chamber and a regulating chamber by an elastic diaphragm, the chamber walls of the first-stage regulating chamber and the second-stage regulating chamber corresponding to the elastic diaphragm are fixedly connected with one end of a spring, the other end of the spring is fixedly connected with the middle part of the elastic diaphragm, an air inlet of the air chamber of the first-stage regulating chamber is provided with a valve core, the air inlet part of each decompression chamber is provided with a regulating screw or a stud, the top of the stud is provided with a rubber pad, the regulating screw or the stud is connected with one end of a support rod, the other end of the support rod is hinged with one end, the adjusting knob is contacted with the end part of the supporting rod through a pressure spring. However, the gas decompressed by the pressure reducing regulator is directly discharged through the gas outlet pipe, and the decompressed gas is easy to contain liquid, so that the pressure of the decompressed gas is easy to be unstable, and the operation of the engine is not reliable and stable enough.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a can make the stable gas governing valve of atmospheric pressure of the gas after the decompression.

The purpose of the utility model can be realized by the following technical proposal: gas governing valve, including the casing that has air inlet and gas outlet, the casing in be equipped with inlet channel and decompression chamber, the gas outlet with the decompression chamber be linked together, inlet channel on be equipped with the stop valve, the casing in be equipped with the negative pressure chamber that has the negative pressure mouth, the negative pressure chamber on be equipped with drive diaphragm one and actuating lever one just drive diaphragm one can promote actuating lever one and remove and make the stop valve open, inlet channel's outer end with the air inlet link to each other, inlet channel's the inner with the decompression chamber be linked together, the decompression chamber in be equipped with drive diaphragm two and end cap, drive diaphragm two can drive the end cap and remove with inlet channel's inner shutoff, its characterized in that, the decompression chamber in be equipped with a plurality of convex ribs, just the rib form air outlet channel, one end of the air outlet channel is communicated with the cavity of the decompression chamber, the other end of the air outlet channel is communicated with the air outlet, a liquid outlet is arranged on the rib and positioned at the lower side corresponding to the air outlet, and the liquid outlet is vertically arranged downwards.

The gas lets in the air inlet, and the stop valve closes inlet channel this moment, and the engine is at the during operation, and engine work is through the air suction of negative pressure mouth in with the negative pressure chamber, and the stop valve is opened for a while through drive diaphragm one promotion actuating lever, and the gas passes through inlet channel this moment and enters into the decompression chamber, and the gas in the decompression chamber is discharged to the engine through air outlet channel and gas outlet. When the pressure of the gas entering the decompression chamber is increased to a set value, the air pressure of the decompression chamber enables the second driving diaphragm to push the plug to plug the inner end of the gas inlet channel, when the air pressure of the decompression chamber is smaller than the set value, the second driving diaphragm resets and drives the plug to be separated from the gas inlet channel, the gas inlet channel is opened, and at the moment, the gas enters the decompression chamber through the gas inlet channel, so that the decompression of the gas is realized. Because the air outlet channel is arranged in the decompression chamber and is provided with the liquid outlet, in the process that the gas in the decompression chamber flows to the other end of the air outlet channel along one end of the air outlet channel, the liquid in the gas is discharged through the liquid outlet, so that the gas discharged from the air outlet after decompression is dried, the pressure of the gas discharged from the air outlet can be stable, and the operation of the engine is stable.

In the gas regulating valve, the other end of the gas outlet channel is fixedly connected with an end cover, and the end cover is positioned on the outer side of the inner end of the gas outlet. The other end of the air outlet channel is provided with the end cover, so that liquid in the decompressed gas can be blocked and discharged better, and a better liquid discharging effect is achieved.

In the gas regulating valve, the cross section of the end cover is circular, the other end of the gas outlet channel is a cavity with a circular cross section, and the end cover is plugged in the cavity. The cavity at the other end of the air outlet channel is plugged by the circular end cover, so that the air outlet channel has the advantages of simple structure and good connection effect.

In the gas regulating valve, the inner side wall of each rib is provided with a plurality of convex liquefying pieces, and the outer ends of the liquefying pieces are inclined towards one end of the gas outlet channel. By arranging the liquefying sheet, liquid in gas flowing through the gas outlet channel can be effectively separated, and the liquefying effect is improved.

In the gas regulating valve, the outer end of the liquefaction sheet has flexibility. The outer end of liquefaction piece has the flexibility, makes the outer end of liquefaction piece can swing, has improved the liquefaction effect.

In the gas regulating valve, the stop valve comprises a valve rod arranged on the shell in a penetrating mode, a sealing ring is positioned on the valve rod, the sealing ring can move along with the valve rod, and the sealing ring can block the air inlet channel.

In the gas regulating valve, a switch spring is arranged between the valve rod and the shell and pushes the valve rod to enable the sealing ring to seal the air inlet channel.

In the gas regulating valve, a driving diaphragm III is arranged in the negative pressure cavity, and two ends of the driving rod I are respectively and fixedly connected with the driving diaphragm I and the driving diaphragm three-phase. The driving diaphragm I and the driving diaphragm III are arranged in the negative pressure cavity, so that the driving rod I can be better driven, and the working reliability is improved.

In the gas regulating valve, one end of the driving diaphragm III is provided with a positioning groove, and one end of the driving rod I is embedded in the positioning groove and fixedly connected with the positioning groove. By adopting the arrangement, the driving rod I and the driving diaphragm III have the advantage of good connection effect.

In the gas regulating valve, a first spring is arranged between the first driving diaphragm and the shell. Through setting up foretell spring one, make drive diaphragm one have better effect that resets.

In foretell gas governing valve, the decompression chamber in be equipped with the swing arm, the middle part of swing arm articulate the casing on, the one end of end cap link firmly the one end in the swing arm, drive diaphragm two on link firmly the ejector pad, the ejector pad with the other end of swing arm link to each other just the other end of swing arm can be along with the removal of ejector pad, drive diaphragm two with the casing between be equipped with spring two, spring two can promote the ejector pad and make the end cap break away from inlet channel. When the pressure in the decompression chamber is increased and overcomes the elasticity of the second spring, the second driving diaphragm drives the push block to move downwards, so that the plug swings upwards to plug the inner end of the air inlet channel, and the air inlet channel has the advantages of simple structure and reliable work.

In the gas regulating valve, the second driving diaphragm is close to the upper end surface of the rib of the decompression chamber. The second driving diaphragm is close to the upper end face of the rib and seals the upper side of the corresponding gas outlet channel, so that gas can better circulate along the gas outlet channel, and the subsequent liquid discharge effect is improved.

Compared with the prior art, the gas regulating valve has the following advantages:

1. because the decompression chamber is internally provided with the air outlet channel consisting of the ribs, the air outlet channel is provided with the liquid outlet, liquid in the air is discharged through the liquid outlet in the process that the air in the decompression chamber flows to the other end of the air outlet channel along one end of the air outlet channel, the air discharged through the air outlet after being decompressed is dried, the pressure of the air discharged from the air outlet can be stabilized, and the work of the engine is stable;

2. the other end of the air outlet channel is provided with the plug, so that liquid in the decompressed air can be blocked and discharged better, and a better liquid discharging effect is achieved;

3. the driving diaphragm I and the driving diaphragm III are arranged in the negative pressure cavity, so that the driving rod I can be better driven, and the working reliability is improved;

4. when the pressure in the decompression chamber is increased and overcomes the elasticity of the second spring, the second driving diaphragm drives the push block to move downwards, so that the plug swings upwards to plug the inner end of the air inlet channel, and the air inlet channel has the advantages of simple structure and reliable work.

Drawings

Fig. 1 is a perspective view of the gas regulating valve.

Fig. 2 is a schematic cross-sectional view of the present gas regulator valve.

Fig. 3 is another schematic cross-sectional view of the present gas regulator valve.

Fig. 4 is a schematic view of the decompression chamber and the end cover of the gas regulating valve.

Fig. 5 is a schematic view of the inside of the decompression chamber of the present gas regulating valve.

Fig. 6 is a schematic view of another mode of the present gas regulator valve decompression chamber.

In the figure, 1, a housing; 1a, an air inlet; 1b, an air outlet; 1c, an intake passage; 1d, a decompression chamber; 1e, a negative pressure cavity; 1f, a negative pressure port; 2. driving the first membrane; 3. a first driving rod; 4. a stop valve; 4a, a valve rod; 4b, a sealing ring; 4c, a switch spring; 5. a second driving diaphragm; 6. a plug; 7. ribs; 7a, a liquid discharge port; 7b, liquefaction of tablets; 8. an air outlet channel; 9. an end cap; 10. driving a diaphragm III; 10a, a positioning groove; 11. a first spring; 12. swinging arms; 13. a push block; 14. and a second spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 5, the gas regulating valve includes a housing 1 having an air inlet 1a and an air outlet 1b, an air inlet channel 1c and a decompression chamber 1d are provided in the housing 1, the air outlet 1b is communicated with the decompression chamber 1d, a stop valve 4 is provided on the air inlet channel 1c, a negative pressure cavity 1e having a negative pressure port 1f is provided in the housing 1, a first driving diaphragm 2, a third driving diaphragm 10 and a first driving rod 3 are provided on the negative pressure cavity 1e, a positioning groove 10a is provided at one end of the third driving diaphragm 10, one end of the first driving rod 3 is embedded in the positioning groove 10a and is fixedly connected with the first driving diaphragm 2, the other end of the first driving rod 3 is fixedly connected with the first driving diaphragm 2, and the first driving diaphragm 2 can push the. Stop valve 4 is including wearing to establish valve rod 4a on casing 1, and the last location of valve rod 4a has sealing washer 4b, and sealing washer 4b can move and sealing washer 4b can shutoff inlet channel 1c along with valve rod 4a, is equipped with switch spring 4c and switch spring 4c between valve rod 4a and the casing 1 and promotes valve rod 4a and make sealing washer 4b shutoff inlet channel 1 c.

The outer end of the intake passage 1c is connected to the intake port 1a, and the inner end of the intake passage 1c is communicated with the decompression chamber 1 d. A driving diaphragm II 5, a plug 6 and a swing arm 12 are arranged in the decompression chamber 1d, and the driving diaphragm II 5 can drive the plug 6 to move so as to plug the inner end of the air inlet channel 1 c. The middle part of swing arm 12 articulates on casing 1, and the one end of end cap 6 links firmly in the one end of swing arm 12, has linked firmly ejector pad 13 on the drive diaphragm two 5, and the outer end of ejector pad 13 has the connecting hole that runs through, and the other end of swing arm 12 passes the connecting hole and links to each other with ejector pad 13 and the other end of swing arm 12 can remove along with ejector pad 13, is equipped with spring two 14 between drive diaphragm two 5 and the casing 1, and spring two 14 can promote ejector pad 13 and make end cap 6 break away from inlet channel 1 c.

Be equipped with a plurality of convex ribs 7 in the decompression chamber 1d, and rib 7 forms air outlet channel 8, and air outlet channel 8's one end is linked together with the cavity of decompression chamber 1d, and air outlet channel 8's the other end is linked together with gas outlet 1b, and the downside that lies in gas outlet 1b on rib 7 and corresponds is equipped with leakage fluid dram 7a, and the vertical downward setting of leakage fluid dram 7 a.

The other end of the air outlet channel 8 is fixedly connected with an end cover 9, the end cover 9 is positioned on the outer side of the inner end of the air outlet 1b, liquid in the decompressed air can be blocked and discharged better, and the liquid discharging effect is better. The cross section of end cover 9 is circular, and the other end of air outlet channel 8 is the cavity that the cross section is circular and end cover 9 shutoff is in the cavity, has simple structure and the better advantage of linkage effect.

The second driving diaphragm 5 is close to the upper end face of the rib 7 of the decompression chamber 1d, and blocks the upper side of the corresponding gas outlet channel 8, so that gas can better circulate along the gas outlet channel 8, and the subsequent liquid discharge effect is improved.

The gas lets in air inlet 1a, and stop valve 4 closes inlet channel 1c this moment, and the engine is at work, and the engine work is through negative pressure mouth 1f with the air suction in the negative pressure chamber 1e, overcomes switch spring 4 c's elasticity and opens stop valve 4 when driving diaphragm 2 promotes actuating lever 3 through this moment, and the gas passes through inlet channel 1c and enters into decompression chamber 1d this moment, and the gas in the decompression chamber 1d is discharged to the engine through outlet channel 8 and gas outlet 1 b. When the pressure of the gas entering the decompression chamber 1d is increased to a set value and overcomes the elasticity of the second spring 14, the second driving diaphragm 5 drives the push block 13 to move downwards, so that the plug 6 swings upwards to plug the inner end of the gas inlet channel 1c, and when the air pressure of the decompression chamber 1d is smaller than the set value, the second spring 14 pushes the second driving diaphragm 5 to reset and drives the plug 6 to be separated from the gas inlet channel 1c, so that the gas inlet channel 1c is opened, and at the moment, the gas enters the decompression chamber 1d through the gas inlet channel 1c, so that the decompression of the gas is realized. Because the gas outlet channel 8 is arranged in the decompression chamber 1d, the gas outlet channel 8 is provided with the liquid outlet 7a, and in the process that the gas in the decompression chamber 1d flows to the other end of the gas outlet channel 8 along one end, the liquid in the gas is discharged through the liquid outlet 7a, so that the gas discharged through the gas outlet 1b after decompression is dried, the pressure of the gas discharged from the gas outlet 1b can be stabilized, and the operation of the engine is stabilized.

As another mode, as shown in fig. 6, the inner side walls of the ribs 7 are provided with a plurality of protruding liquefaction pieces 7b, the outer ends of the liquefaction pieces 7b are inclined toward one end of the air outlet channel 8, and the outer ends of the liquefaction pieces 7b are flexible. By arranging the liquefying sheet 7b, liquid in the gas flowing through the gas outlet channel 8 can be effectively separated, and the liquefying effect is improved.

Preferably, the outer end of the liquefaction sheet 7b has flexibility, so that the outer end of the liquefaction sheet 7b can swing, thereby improving liquefaction effect.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the housing 1, the air inlet 1a, the air outlet 1b, the air inlet channel 1c, the decompression chamber 1d, the negative pressure cavity 1e, the negative pressure port 1f, the driving diaphragm one 2, the driving rod one 3, the stop valve 4, the valve rod 4a, the sealing ring 4b, the switch spring 4c, the driving diaphragm two 5, the plug 6, the rib 7, the liquid outlet 7a, the liquefaction sheet 7b, the air outlet channel 8, the end cover 9, the driving diaphragm three 10, the positioning groove 10a, the spring one 11, the swing arm 12, the push block 13, the spring two 14 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. Gas governing valve, including casing (1) that has air inlet (1a) and gas outlet (1b), casing (1) in be equipped with inlet channel (1c) and decompression chamber (1d), gas outlet (1b) with decompression chamber (1d) be linked together, inlet channel (1c) on be equipped with stop valve (4), casing (1) in be equipped with negative pressure chamber (1e) that have negative pressure mouth (1f), negative pressure chamber (1e) on be equipped with drive diaphragm (2) and actuating lever (3) and drive diaphragm (2) can promote actuating lever (3) to remove and make stop valve (4) open, inlet channel (1c) the outer end with air inlet (1a) link to each other, inlet channel (1c) the inner with decompression chamber (1d) be linked together, decompression chamber (1d) in be equipped with drive diaphragm two (5) and end cap (6), drive diaphragm two (5) can drive end cap (6) and remove will inlet channel (1c) the inner shutoff, its characterized in that, decompression chamber (1d) in be equipped with a plurality of convex ribs (7), just rib (7) form outlet channel (8), outlet channel (8) one end with the cavity of decompression chamber (1d) be linked together, outlet channel (8) the other end with gas outlet (1b) be linked together, rib (7) on lie in the downside that gas outlet (1b) correspond be equipped with leakage fluid dram (7a), vertical setting downwards of leakage fluid dram (7 a).

2. The gas regulating valve according to claim 1, wherein the other end of the gas outlet channel (8) is fixedly connected with an end cover (9), and the end cover (9) is positioned outside the inner end of the gas outlet (1 b).

3. The gas regulating valve according to claim 2, wherein the cross section of the end cover (9) is circular, the other end of the gas outlet channel (8) is a cavity with a circular cross section, and the end cover (9) is blocked in the cavity.

4. The gas regulating valve according to claim 1, 2 or 3, wherein the stop valve (4) comprises a valve rod (4a) penetrating the housing (1), a sealing ring (4b) is positioned on the valve rod (4a), the sealing ring (4b) can move along with the valve rod (4a) and the sealing ring (4b) can block the air inlet passage (1c), a switch spring (4c) is arranged between the valve rod (4a) and the housing (1), and the switch spring (4c) pushes the valve rod (4a) to enable the sealing ring (4b) to block the air inlet passage (1 c).

5. The gas regulating valve according to claim 1, 2 or 3, characterized in that a driving diaphragm III (10) is arranged in the negative pressure cavity (1e), two ends of the driving rod I (3) are respectively connected with the driving diaphragm I (2) and the driving diaphragm III (10), and a spring I (11) is arranged between the driving diaphragm I (2) and the shell (1).

6. The gas regulating valve according to claim 5, wherein one end of the driving diaphragm III (10) is provided with a positioning groove (10a), and one end of the driving rod I (3) is embedded in the positioning groove (10a) and fixedly connected with the positioning groove.

7. The gas regulating valve according to claim 1, 2 or 3, characterized in that a swing arm (12) is arranged in the decompression chamber (1d), the middle part of the swing arm (12) is hinged to the housing (1), one end of the choke plug (6) is fixedly connected to one end of the swing arm (12), a push block (13) is fixedly connected to the driving diaphragm two (5), the push block (13) is connected to the other end of the swing arm (12) and the other end of the swing arm (12) can move along with the push block (13), a spring two (14) is arranged between the driving diaphragm two (5) and the housing (1), and the spring two (14) can push the push block (13) and make the choke plug (6) separate from the air inlet channel (1 c).

8. Gas regulating valve according to claim 1, 2 or 3, characterized in that the second actuating diaphragm (5) is adjacent to the upper end face of the rib (7) of the decompression chamber (1 d).

9. The gas regulating valve according to claim 1, 2 or 3, wherein the inner side walls of the ribs (7) are provided with a plurality of protruding liquefying sheets (7b), and the outer ends of the liquefying sheets (7b) are obliquely arranged towards one end of the gas outlet channel (8).

10. Gas regulating valve according to claim 9, characterized in that the outer end of the liquefaction sheet (7b) is flexible.

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