Fuel gas pressure stabilizer

Abstract

The fuel gas pressure stabilizer comprises a valve body, a guide sleeve, a leather membrane, a connecting rod, a valve needle and a spring, a gas inlet connector and a gas outlet connector are arranged on the side wall of the valve body, the guide sleeve is fixed in the valve body in a sealed mode, a gas channel communicated with the gas inlet connector and the gas outlet connector is arranged in the guide sleeve, and the leather membrane is located in the valve body on the upper side of the guide sleeve. The outer edge of the leather membrane is fixedly connected with the valve body in a sealed mode, the connecting rod is fixed to the middle of the leather membrane in a sealed mode, the valve needle penetrates through an air channel of the guide sleeve from bottom to top, the upper end of the valve needle is fixed to the connecting rod, and the lower end of the valve needle is provided with a conical head for controlling the size of an opening of the air channel. The upper end and the lower end of the spring correspondingly abut against the upper spring seat and the lower spring seat, the upper spring seat abuts against the valve body, and the lower spring seat is fixed to the connecting rod. The device has the advantages of being simple in structure, low in cost, convenient to adjust, good in adaptability and high in practicability.

Description

Technical Field

[0001] The utility model relates to a gas pressure regulating device, in particular to a gas pressure stabilizer with simple structure and low cost. Background Art

[0002] In the field of gas transmission and distribution, high-pressure gas needs to be regulated multiple times before it can reach the low-pressure requirement for direct use by end users. Gas pressure regulation is achieved through pressure regulators, but current pressure regulators generally have problems such as complex structure, large size, and high price. The equipment investment and use costs are high, which affects economic benefits. Utility Model Content

[0003] The utility model aims to provide a gas pressure stabilizer, which has the advantages of simple structure, low cost, convenient adjustment, good adaptability and strong practicality.

[0004] In order to solve the above-mentioned problems existing in the prior art, the utility model provides a gas pressure stabilizer, including a valve body, a guide sleeve, a diaphragm, a connecting rod, a valve needle and a spring, wherein an air inlet interface and an air outlet interface are provided on the side wall of the valve body, the guide sleeve is sealed and fixed in the valve body, an air passage connecting the air inlet interface and the air outlet interface is provided in the guide sleeve, the diaphragm is in the valve body on the upper side of the guide sleeve, the outer edge of the diaphragm is sealed and fixedly connected to the valve body, the connecting rod is sealed and fixed in the middle of the diaphragm, the valve needle passes through the air passage of the guide sleeve from bottom to top, the upper end of the valve needle is fixed on the connecting rod, and the lower end of the valve needle is provided with a cone head for controlling the size of the air passage opening, the spring is in the valve body on the upper side of the diaphragm, the upper and lower ends of the spring are pressed on the upper spring seat and the lower spring seat correspondingly, the upper spring seat is pressed on the valve body, and the lower spring seat is fixed on the connecting rod.

[0005] Furthermore, the utility model provides a gas pressure stabilizer, wherein the valve body comprises a lower valve body, an upper valve body and an adjusting cap, the upper valve body is cylindrical, the lower end of the upper valve body is fixed to the lower valve body by a flange and circumferentially distributed screws, the adjusting cap is threadedly mounted on the upper valve body, the air inlet interface and the air outlet interface are arranged on the side wall of the lower valve body, the guide sleeve is sealed and fixed in the lower valve body, the outer edge of the diaphragm is squeezed between the lower valve body and the upper valve body, and the upper spring seat is pressed against the adjusting cap.

[0006] Furthermore, the utility model provides a gas pressure stabilizer, wherein a through hole is provided in the middle of the diaphragm, a limit platform is provided at the lower end of the connecting rod and the through hole of the diaphragm is passed through from bottom to top, a lower tray is sleeved on the connecting rod between the limit platform and the diaphragm, an upper tray is sleeved on the connecting rod on the upper side of the diaphragm, the lower spring seat is sleeved on the connecting rod on the upper side of the upper tray, and a locking nut is threadedly installed on the connecting rod on the upper side of the lower spring seat.

[0007] Furthermore, the utility model provides a gas pressure stabilizer, wherein the cross-section of the guide sleeve is T-shaped, the lower half of the guide sleeve is installed on the lower valve body by means of threads, and sealing gaskets are provided between the upper half of the guide sleeve and the lower valve body, and between the limit platform of the connecting rod and the lower tray.

[0008] Compared with the prior art, the utility model has the following advantages: the utility model provides a gas pressure stabilizer by arranging a valve body, a guide sleeve, a membrane, a connecting rod, a valve needle and a spring, so that the valve body is provided with an air inlet interface and an air outlet interface on its side wall, the guide sleeve is sealed and fixed in the valve body, and an air passage connecting the air inlet interface and the air outlet interface is provided in the guide sleeve, the membrane is arranged in the valve body on the upper side of the guide sleeve, and the outer edge of the membrane is sealed and fixedly connected with the valve body, the connecting rod is sealed and fixed in the middle of the membrane, the valve needle passes through the air passage of the guide sleeve from bottom to top, the upper end of the valve needle is fixed on the connecting rod, and a cone head for controlling the opening size of the air passage is arranged at the lower end of the valve needle, the spring is arranged in the valve body on the upper side of the membrane, and the upper and lower ends of the spring are pressed against the upper spring seat and the lower spring seat correspondingly, wherein the upper spring seat is pressed against the valve body, and the lower spring seat is fixed on the connecting rod. Thus, a gas pressure stabilizer with simple structure, low cost, convenient adjustment, good adaptability and strong practicality is formed. When the vent valve is in a closed position, the vent valve is in a closed position and the vent valve is in a closed position, ... Using the voltage stabilizer provided by the utility model as a pre-voltage regulating device of an existing voltage regulator can effectively reduce the working pressure of the existing voltage regulator. Accordingly, the post-voltage regulator can adopt a voltage regulator with relatively small voltage regulating capacity, thereby reducing the equipment installation and use costs on the basis of ensuring voltage regulation and voltage stabilization.

[0009] The following is a further detailed description of a gas pressure stabilizer of the utility model in conjunction with the specific implementation modes shown in the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a front view of a gas pressure stabilizer of the utility model;

[0011] Figure 2This is an axonometric diagram of a gas pressure stabilizer of the utility model;

[0012] Figure 3 for Figure 1 AA view in . DETAILED DESCRIPTION

[0013] First of all, it should be explained that the directional words such as up, down, left, right, front and back described in the present invention are only described according to the drawings for the convenience of understanding, and are not intended to limit the technical solution of the present invention and the scope of protection requested.

[0014] like Figures 1 to 3 The utility model is shown as a specific implementation of a gas pressure stabilizer, comprising a valve body 1, a guide sleeve 2, a membrane 3, a connecting rod 4, a valve needle 5 and a spring 6. An air inlet interface 11 and an air outlet interface 12 are arranged on the side wall of the valve body 1. The guide sleeve 2 is sealed and fixed in the valve body 1, and an air passage 21 connecting the air inlet interface 11 and the air outlet interface 12 is arranged in the guide sleeve 2. The membrane 3 is placed in the valve body 1 on the upper side of the guide sleeve 2, and the outer edge of the membrane 3 is sealed and fixedly connected to the valve body 1. The connecting rod 4 is sealed and fixed in the middle of the membrane 3. The valve needle 5 is allowed to pass through the air passage 21 of the guide sleeve 2 from bottom to top, and the upper end of the valve needle 5 is fixed on the connecting rod 4, and a cone head 51 for controlling the opening size of the air passage 21 is arranged at the lower end of the valve needle 5. The spring 6 is placed in the valve body 1 on the upper side of the diaphragm 3 , and the upper and lower ends of the spring 6 are pressed against the upper spring seat 61 and the lower spring seat 62 correspondingly, wherein the upper spring seat 61 is pressed against the valve body 1 , and the lower spring seat 62 is fixed on the connecting rod 4 .

[0015] The above arrangement constitutes a gas pressure regulator with simple structure, low cost, convenient adjustment, good adaptability and strong practicality. In practical application, the pressure regulator provided by the utility model is installed in front of the existing indirect-acting gas pressure regulator controller through the air inlet interface 11 and the air outlet interface 12. In the initial state, when no gas flows through the pressure regulator, the connecting rod 4 is in the lowest position under the action of the spring 6 and rests on the guide sleeve 2. At this time, the cone head 41 is at the farthest position from the guide sleeve 2, and the gas channel 21 is in the largest opening state; when the gas flows through the air inlet interface 11, the gas channel 21 and the air outlet interface 12 in turn, a certain pressure drop will be generated, and on the air outlet interface side, the pressure drop will be reduced. A certain air pressure is generated in the cavity between the guide sleeve 2 and the membrane 3. The air pressure will generate a certain pressure on the membrane 3 and cause the membrane 3, the connecting rod 4 and the valve needle 5 to move upward to a certain extent. The upward movement of the valve needle 5 will cause the cone head 51 to seal a certain opening of the airway 21. The reduction of the opening of the airway 21 will cause the air pressure on the air outlet interface to decrease. When the air pressure and the force generated by the spring 6 on the membrane 3 reach a balance, the positions of the membrane 3, the connecting rod 4 and the valve needle 5 and the air pressure on the air outlet interface remain unchanged, thereby achieving the purpose of pressure regulation and voltage stabilization. Using the voltage stabilizer provided by the utility model as a pre-pressure regulating device of an existing voltage regulator can effectively reduce the working pressure of the existing voltage regulator. Accordingly, the post-pressure regulator can use a voltage regulator with a relatively small pressure regulating capacity, thereby reducing the equipment installation and use costs on the basis of ensuring pressure regulation and voltage stabilization.

[0016] As an optimization scheme, the specific implementation method makes the valve body 1 adopt a split design and combined use structure, specifically including a lower valve body 13, an upper valve body 14 and an adjusting cap 15, the upper valve body 14 adopts a cylindrical structure, the lower end of the upper valve body 14 is fixed to the lower valve body 13 through a flange 141 and screws 16 distributed along the circumference, and the adjusting cap 15 is installed on the upper valve body 14 through threads, wherein the air inlet interface 11 and the air outlet interface 12 are arranged on the side wall of the lower valve body 13, the guide sleeve 2 is sealed and fixed in the lower valve body 13, the outer edge of the membrane 3 is squeezed between the lower valve body 13 and the upper valve body 14, and the upper spring seat 61 presses on the adjusting cap 15. This setting not only improves the convenience of disassembly and maintenance, but also can achieve the purpose of adjusting the tightness of the spring 6 by rotating the adjusting cap 15, thereby achieving the technical purpose of adjusting the pressure on the side of the air outlet interface, improving the adaptability and practicality of the voltage regulator, and has the characteristics of simple operation and convenient adjustment.

[0017] As a specific embodiment, the utility model makes the membrane 3 and the connecting rod 4 adopt the following connection method: a through hole is set in the middle of the membrane 3, a limit platform 41 is set at the lower end of the connecting rod 4, and the connecting rod 4 passes through the through hole of the membrane 3 from bottom to top, a lower tray 7 is sleeved on the connecting rod 4 between the limit platform 41 and the membrane 3, an upper tray 8 is sleeved on the connecting rod 4 on the upper side of the membrane 3, the lower spring seat 62 is sleeved on the connecting rod 4 on the upper side of the upper tray 8, and a locking nut 9 is threadedly installed on the connecting rod 4 on the upper side of the lower spring seat 62. This setting has the characteristics of simple structure, convenient disassembly and strong adaptability. Similarly, in this specific embodiment, the guide sleeve 2 adopts a structure with a T-shaped cross section, and the lower half of the guide sleeve 2 is threadedly installed on the lower valve body 13 to improve the convenience of disassembly and assembly. In order to ensure the sealing of the corresponding connection, the specific embodiment also provides a sealing gasket between the upper half of the guide sleeve 2 and the lower valve body 13, and between the limit platform 41 of the connecting rod 4 and the lower tray 7.

[0018] The above embodiments are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the protection scope of the present invention. Without departing from the design concept of the present invention, various modifications made by those skilled in the art based on the technical solution of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A gas pressure stabilizer, characterized in that: The invention comprises a valve body (1), a guide sleeve (2), a membrane (3), a connecting rod (4), a valve needle (5) and a spring (6); an air inlet interface (11) and an air outlet interface (12) are provided on the side wall of the valve body (1); the guide sleeve (2) is sealed and fixed in the valve body (1); an air passage (21) connecting the air inlet interface (11) and the air outlet interface (12) is provided in the guide sleeve (2); the membrane (3) is located in the valve body (1) on the upper side of the guide sleeve (2); the outer edge of the membrane (3) is sealed and fixedly connected to the valve body (1); the connecting rod (4) ) is sealed and fixed in the middle of the diaphragm (3), the valve needle (5) passes through the air passage (21) of the guide sleeve (2) from bottom to top, the upper end of the valve needle (5) is fixed on the connecting rod (4), and the lower end of the valve needle (5) is provided with a cone head (51) for controlling the opening size of the air passage (21), the spring (6) is located in the valve body (1) on the upper side of the diaphragm (3), and the upper and lower ends of the spring (6) are pressed against the upper spring seat (61) and the lower spring seat (62) respectively, the upper spring seat (61) is pressed against the valve body (1), and the lower spring seat (62) is fixed on the connecting rod (4).

2. A gas pressure stabilizer according to claim 1, characterized in that: The valve body (1) comprises a lower valve body (13), an upper valve body (14) and an adjusting cap (15); the upper valve body (14) is cylindrical; the lower end of the upper valve body (14) is fixed to the lower valve body (13) by means of a flange (141) and screws (16) distributed along the circumference; the adjusting cap (15) is installed on the upper valve body (14) by means of threads; the air inlet interface (11) and the air outlet interface (12) are arranged on the side wall of the lower valve body (13); the guide sleeve (2) is sealed and fixed in the lower valve body (13); the outer edge of the diaphragm (3) is squeezed between the lower valve body (13) and the upper valve body (14); and the upper spring seat (61) is pressed against the adjusting cap (15).

3. A gas pressure stabilizer according to claim 2, characterized in that: A through hole is provided in the middle of the membrane (3); a limit platform (41) is provided at the lower end of the connecting rod (4) and passes through the through hole of the membrane (3) from bottom to top; a lower tray (7) is sleeved on the connecting rod (4) between the limit platform (41) and the membrane (3); an upper tray (8) is sleeved on the connecting rod (4) on the upper side of the membrane (3); a lower spring seat (62) is sleeved on the connecting rod (4) on the upper side of the upper tray (8); and a locking nut (9) is threadedly installed on the connecting rod (4) on the upper side of the lower spring seat (62).

4. A gas pressure stabilizer according to claim 3, characterized in that: The guide sleeve (2) has a T-shaped cross section. The lower half of the guide sleeve (2) is mounted on the lower valve body (13) via threads. Sealing pads are provided between the upper half of the guide sleeve (2) and the lower valve body (13), and between the limit platform (41) of the connecting rod (4) and the lower tray (7).

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