Leakage-proof pressure regulating box

Abstract

The utility model relates to the technical field of fuel gas equipment, and discloses a leakproof pressure regulating box which comprises a pressure regulating box body, a plurality of pressure gauges are fixedly connected to the inner wall of the pressure regulating box body, a three-type gas storage tank is fixedly connected to the inner wall of the pressure regulating box body, a two-piece ball valve is fixedly connected to the bottom of the three-type gas storage tank, and the two-piece ball valve is fixedly connected to the bottom of the three-type gas storage tank. The inner wall of the two-piece type ball valve is fixedly connected with a pressure reducing valve guide pipe, the other end of the inner wall of the pressure reducing valve guide pipe is fixedly connected with a pressure reducing valve body, the inner wall of the pressure reducing valve body is fixedly connected with a pressure reducing valve element, and the top of the pressure reducing valve element is fixedly connected with a pressure reducing valve diaphragm. According to the pressure reducing valve, the design of a built-in pressure reducing system is adopted, opening and closing are balanced, the defects that a small-caliber pressure reducing valve is poor in stability and not easy to control are overcome, and the pressure change amplitude can be controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas equipment technical field especially relates to prevent leaking pressure regulating tank. BACKGROUND

[0002] The working principle of the prevent leaking pressure regulating tank adjusts the pressure to the stable state through the regulating valve, and is equipped with a leakage detection device, and once the leakage is detected, the valve is quickly closed to prevent the leakage. It is mainly used for gas transmission and distribution system, such as residential area, commercial user, industrial enterprise and so on, gas pressure regulating, and is also applicable to natural gas vehicle filling station, gas boiler and other places with high requirements for gas pressure stability and leakage prevention, to ensure the safety and stability of gas use.

[0003] The prevent leaking pressure regulating tank can accurately adjust the pressure, ensure the stable supply of fluid such as gas, and ensure the normal operation of the equipment; it has high sensitivity of leakage detection and blocking function, can effectively prevent leakage, avoid safety accidents such as fire and explosion, and protect the safety of life and property; it can also monitor the pressure data in real time, so that the operation and maintenance personnel can master the situation in time, carry out remote operation and management, improve the management efficiency, and reduce the labor cost and maintenance difficulty.

[0004] In the prior art, part of the pressure reducing valve adopts small diameter pressure reducing valve, the small diameter pressure reducing valve has small diameter and large pressure change caused by flow change, and small flow fluctuation will cause large pressure change and small diameter channel is easy to produce cavitation, noise interference and pressure stability, and the valve parts will be damaged, therefore, the prevent leaking pressure regulating tank is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a prevent leaking pressure regulating tank, which aims at improving the poor stability and difficult control of part of the small diameter pressure reducing valve in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The prevent leaking pressure regulating tank comprises a pressure regulating tank body, a plurality of pressure gauges are fixedly connected to the inner wall of the pressure regulating tank body, three type gas storage tanks are fixedly connected to the inner wall of the pressure regulating tank body, two piece type ball valves are fixedly connected to the bottom of the three type gas storage tanks, reducing valve guide pipes are fixedly connected to the inner wall of the two piece type ball valves, reducing valve bodies are fixedly connected to the other end of the inner wall of the reducing valve guide pipes, reducing valve spools are fixedly connected to the inner wall of the reducing valve bodies, reducing valve diaphragms are fixedly connected to the top of the reducing valve spools, reducing valve covers are fixedly connected to the top of the reducing valve diaphragms, reducing valve tapers are slidably connected to the inner wall of the reducing valve covers, reducing valve main springs are fixedly connected to the bottom of the reducing valve tapers, and filters are fixedly connected to the top of the pressure regulating tank body.

[0008] As a further description of the above technical scheme:

[0009] The bottom of the pressure reducing valve spool is provided with an O-ring I, and the outer wall of the pressure reducing valve spool is provided with a ventilation groove;

[0010] As a further description of the above technical solution:

[0011] The bottom of the pressure reducing valve body is fixedly connected with a pressure reducing valve bottom cover, and the inner wall of the pressure reducing valve bottom cover is fixedly connected with a pressure reducing valve auxiliary spring;

[0012] As a further description of the above technical solution:

[0013] The top of the pressure reducing valve auxiliary spring is fixedly connected with a pressure reducing valve pressing plate, and the outer wall of the pressure reducing valve pressing plate is fixedly connected with an O-ring III;

[0014] As a further description of the above technical solution:

[0015] The other side of the pressure reducing valve body is fixedly connected with a pressure reducing valve screw rod, and the inner wall of the pressure reducing valve cover is slidably connected with a pressure reducing valve top rod;

[0016] As a further description of the above technical solution:

[0017] The bottom of the pressure reducing valve top rod is fixedly connected with a small ball, and the bottom of the small ball is provided with an O-ring II;

[0018] As a further description of the above technical solution:

[0019] The O-ring II is placed at the top of the pressure reducing valve cone, and the top of the pressure reducing valve top rod is fixedly connected with a pressure reducing valve pressing rod;

[0020] As a further description of the above technical solution:

[0021] The pressure reducing valve spool is fixedly connected to the inner wall of the pressure reducing valve diaphragm through a fixing screw, and the bottom end of the pressure reducing valve main spring is fixedly connected to the top of the pressure reducing valve diaphragm.

[0022] The utility model has the advantages of the following beneficial effects:

[0023] In the utility model, the built-in pressure reducing system design of the pressure reducing valve balances opening and closing, overcomes the characteristics of poor stability and difficult control of the small-bore pressure reducing valve. Through two adjusting springs, an elastic diaphragm and a control rod, the opening degree of the valve is controlled, the stable pressure parameter output is achieved through the adjustment of the adjusting rod, the pressure change range can be controlled, and the occurrence of cavitation and other phenomena can be avoided, so as to protect the valve parts of the pressure reducing valve. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1The utility model provides a three -dimensional schematic view of the anti -leakage pressure regulating tank is put forward by the utility model,

[0025] Figure 2 The utility model provides a structure schematic view of the three type gas storage tank of the anti -leakage pressure regulating tank is put forward by the utility model,

[0026] Figure 3 The utility model provides a structure schematic view of the pressure reducing valve valve body of the anti -leakage pressure regulating tank is put forward by the utility model,

[0027] Figure 4 The utility model provides a structure schematic view of the pressure reducing valve diaphragm of the anti -leakage pressure regulating tank is put forward by the utility model,

[0028] Figure 5 For Figure 3 The enlarged view of A in the middle.

[0029] Legend:

[0030] 1, pressure regulating tank body;2, three type gas storage tank;3, pressure gauge;4, pressure reducing valve pressure rod;5, pressure reducing valve bonnet;6, pressure reducing valve screw;7, two -piece ball valve;8, filter;9, pressure reducing valve diaphragm;10, pressure reducing valve valve body;11, pressure reducing valve guide pipe;12, O ring 1;13, pressure reducing valve awl;14, O ring 2;15, pressure reducing valve ejector rod;16, small ball;17, pressure reducing valve pressure plate;18, pressure reducing valve auxiliary spring;19, O ring 3;20, pressure reducing valve valve core;21, pressure reducing valve main spring;22, pressure reducing valve bottom cover;23, air groove. Specific implementation

[0031] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the range of protection of the utility model.

[0032] Referring to Figure 1 , Figure 3 and Figure 5 An embodiment provided by the utility model: anti -leakage pressure regulating tank, including pressure regulating tank body 1, the inner wall of pressure regulating tank body 1 is fixedly connected with multiple pressure gauges 3, these pressure gauges 3 can show the pressure condition in pressure regulating tank in real time, be convenient for operator to understand pressure state in time, the inner wall of pressure regulating tank body 1 is fixedly connected with three type gas storage tank 2, three type gas storage tank 2 is used to store natural gas and other gas, provides gas source for subsequent pressure regulating, the bottom of three type gas storage tank 2 is fixedly connected with two -piece ball valve 7, when needing to use pressure regulating tank, open two -piece ball valve 7, and the natural gas stored in three type gas storage tank 2 will be passed into the inside of pressure reducing valve valve body 10 through three type gas storage tank 2.

[0033] The inner wall of the two-piece ball valve 7 is fixedly connected with a pressure reducing valve guide pipe 11, which plays a role in guiding the flow direction of the gas, so that the gas can smoothly enter the pressure reducing valve body 10. The inner wall of the pressure reducing valve guide pipe 11 is fixedly connected with the pressure reducing valve body 10 at the other end. The pressure reducing valve body 10 is the core component for realizing pressure regulating function. The inner wall of the pressure reducing valve body 10 is fixedly connected with a pressure reducing valve spool 20. The position change of the pressure reducing valve spool 20 can control the opening of the valve, thereby controlling the gas flow. The top of the pressure reducing valve spool 20 is fixedly connected with a pressure reducing valve diaphragm 9 composed of an elastic material. When the pressure reducing valve main spring 21 is pressed down, the pressure reducing valve diaphragm 9 will be pressed down accordingly, thereby driving the pressure reducing valve spool 20 to press down.

[0034] The top of the pressure reducing valve diaphragm 9 is fixedly connected with a pressure reducing valve cover 5, which plays a role in protecting and fixing the internal components. The inner wall of the pressure reducing valve cover 5 is slidingly connected with a pressure reducing valve cone 13, which can press down the pressure reducing valve main spring 21 under the action of a pressure reducing valve top rod 15. The bottom of the pressure reducing valve cone 13 is fixedly connected with the pressure reducing valve main spring 21. The top of the pressure regulating tank body 1 is fixedly connected with a filter 8, which is used to filter the inside of the three-type gas storage tank 2, preventing impurities from entering and affecting the pressure regulating effect. The bottom of the pressure reducing valve spool 20 is provided with an O-ring 12, which plays a sealing role to prevent gas leakage.

[0035] Referring to Figure 1 , Figure 2 and Figure 4 The bottom of the pressure reducing valve body 10 is fixedly connected with a pressure reducing valve bottom cover 22, which plays a role in protecting and supporting the internal components of the pressure reducing valve. The inner wall of the pressure reducing valve bottom cover 22 is fixedly connected with a pressure reducing valve auxiliary spring 18, which plays an auxiliary role when the pressure reducing valve main spring 21 exerts a downward pressure on the entire pressure reducing valve spool 20, so that the pressure reducing valve spool 20 can be pressed down. The top of the pressure reducing valve auxiliary spring 18 is fixedly connected with a pressure reducing valve pressure plate 17, which allows the force of the pressure reducing valve spool 20 to be pressed down to be uniformly transmitted to the pressure reducing valve auxiliary spring 18. The outer wall of the pressure reducing valve pressure plate 17 is fixedly connected with an O-ring 19, which plays a sealing role to prevent gas leakage.

[0036] The other side of the pressure reducing valve body 10 is fixedly connected with a pressure reducing valve screw rod 6, which is used to connect the other end of the pressure reducing valve to the receiving end to realize the output of gas. The inner wall of the pressure reducing valve cover 5 is slidingly connected with a pressure reducing valve top rod 15, which is pressed down when the pressure reducing valve pressure rod 4 is pressed. The bottom of the pressure reducing valve top rod 15 is fixedly connected with a small ball 16, which is pressed down when the pressure reducing valve top rod 15 is pressed down. The bottom of the small ball 16 is provided with an O-shaped ring 14, which is placed on the top of the pressure reducing valve awl 13. The O-shaped ring 14 plays a protective role to prevent the small ball 16 from directly contacting the pressure reducing valve awl 13 for a long time, which may cause damage to the pressure reducing valve awl 13. The top of the pressure reducing valve top rod 15 is fixedly connected with the pressure reducing valve pressure rod 4, which is pressed down to adjust the opening of the valve. The pressure reducing valve spool 20 is fixedly connected to the inner wall of the pressure reducing valve diaphragm 9 by a fixing screw to ensure the stable connection between the pressure reducing valve spool 20 and the pressure reducing valve diaphragm 9. The air passage 23 facilitates the passage of gas through the pressure reducing valve spool 20.

[0037] The bottom end of the pressure reducing valve main spring 21 is fixedly connected to the top of the pressure reducing valve diaphragm 9. When the pressure reducing valve awl 13 is pressed down, the pressure reducing valve main spring 21 is pressed down, which in turn causes the pressure reducing valve diaphragm 9 to be pressed down to press the pressure reducing valve spool 20 down to realize the regulation and control of the valve opening.

[0038] Working principle: when the pressure regulating tank is needed, at this time, open the two-piece ball valve 7, at this time, the stored natural gas in the three-type gas tank 2 will be introduced into the inside of the pressure reducing valve body 10 through the three-type gas tank 2, if the opening of the valve needs to be adjusted, press the pressure reducing valve pressure rod 4 to press the pressure reducing valve top rod 15 down, the pressure reducing valve top rod 15 is pressed down through the small ball 16 to press the pressure reducing valve awl 13 to press the pressure reducing valve main spring 21 down, then the pressure reducing valve main spring 21 causes the pressure reducing valve diaphragm 9 to be pressed down to press the pressure reducing valve spool 20 down, so that the air passage 23 outside the pressure reducing valve spool 20 moves downward, so that the size of the area exposed to the pressure reducing valve guide pipe 11 controls the opening of the valve, so as to adjust the opening of the valve, realize the flow control of natural gas and other gases. It is worth noting that the pressure reducing valve diaphragm 9 is an elastic diaphragm made of elastic material. The built-in pressure reducing system design of the pressure reducing valve balances the opening and closing, and overcomes the poor stability and difficult control characteristics of small-diameter pressure reducing valves. The opening of the valve is controlled by two adjusting springs, an elastic diaphragm and a control rod, and the stable pressure parameter output is achieved by adjusting the rod.

[0039] The function of the pressure reducing valve auxiliary spring 18 is to assist the pressure reducing valve main spring 21 to press the pressure reducing valve spool 20, so that the pressure reducing valve spool 20 can be pressed, and the function of the pressure reducing valve pressure plate 17 is to make the force of the pressure reducing valve spool 20 be evenly transmitted to the pressure reducing valve auxiliary spring 18, the O-ring plays a sealing role, and the pressure reducing valve screw 6 is used for connecting the other end of the pressure reducing valve to a receiving end, wherein the filter 8 is used for filtering the inside of the three-type gas storage tank 2.

[0040] Finally, it should be noted that the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. Leak-proof pressure regulating tank, comprising a pressure regulating tank body (1), characterized in that: The inner wall of the pressure regulating box body (1) is fixedly connected with a plurality of pressure gauges (3), the inner wall of the pressure regulating box body (1) is fixedly connected with three type gas storage tanks (2), the bottom of the three type gas storage tanks (2) is fixedly connected with two-piece ball valves (7), the inner wall of the two-piece ball valves (7) is fixedly connected with pressure reducing valve guide pipes (11), the inner wall of the pressure reducing valve guide pipes (11) is fixedly connected with pressure reducing valve bodies (10) at the other end, the inner wall of the pressure reducing valve bodies (10) is fixedly connected with pressure reducing valve spools (20), the top of the pressure reducing valve spools (20) is fixedly connected with pressure reducing valve diaphragms (9), the top of the pressure reducing valve diaphragms (9) is fixedly connected with pressure reducing valve covers (5), the inner wall of the pressure reducing valve covers (5) is slidingly connected with pressure reducing valve tapers (13), the bottom of the pressure reducing valve tapers (13) is fixedly connected with pressure reducing valve main springs (21), and the top of the pressure regulating box body (1) is fixedly connected with filters (8).

2. The leak-proof pressure regulating tank of claim 1, wherein: The bottom of the pressure reducing valve spool (20) is provided with an O-ring I (12), and the outer wall of the pressure reducing valve spool (20) is provided with a ventilation groove (23).

3. The leak-proof pressure regulating tank of claim 1, wherein: The bottom of the pressure reducing valve body (10) is fixedly connected with a pressure reducing valve bottom cover (22), and the inner wall of the pressure reducing valve bottom cover (22) is fixedly connected with a pressure reducing valve auxiliary spring (18).

4. The leak-tight pressure regulating tank of claim 3, wherein: The top of the pressure reducing valve auxiliary spring (18) is fixedly connected with a pressure reducing valve pressure plate (17), and the outer wall of the pressure reducing valve pressure plate (17) is fixedly connected with an O-ring III (19).

5. The leak-proof pressure regulating tank of claim 1, wherein: The other side of the pressure reducing valve body (10) is fixedly connected with a pressure reducing valve screw rod (6), and the inner wall of the pressure reducing valve cover (5) is slidingly connected with a pressure reducing valve top rod (15).

6. The leak-tight pressure regulating tank of claim 5, wherein: The bottom of the pressure reducing valve top rod (15) is fixedly connected with a small ball (16), and the bottom of the small ball (16) is provided with an O-ring II (14).

7. The leak-tight pressure regulating tank of claim 6, wherein: The O-ring II (14) is placed on the top of the pressure reducing valve taper (13), and the top of the pressure reducing valve top rod (15) is fixedly connected with a pressure reducing valve pressure rod (4).

8. The leak-proof pressure regulating tank of claim 1, wherein: The pressure reducing valve spool (20) is fixedly connected to the inner wall of the pressure reducing valve diaphragm (9) through a fixing screw, and the bottom end of the pressure reducing valve main spring (21) is fixedly connected to the top of the pressure reducing valve diaphragm (9).

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