CN218625562U

CN218625562U - Boost regulating valve

Info

Publication number: CN218625562U
Application number: CN202223228719.XU
Authority: CN
Inventors: 王志龙
Original assignee: Shanghai Afs Valve Co ltd
Current assignee: Shanghai Afs Valve Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-03-14
Anticipated expiration: 2032-12-02

Abstract

The utility model provides a governing valve steps up, include: a valve body; the spring A is arranged in the valve cover, an upper spring seat is arranged at the top end in the valve cover, a lower spring seat is arranged at the bottom end in the valve cover, and two ends of the spring A are respectively connected with the upper spring seat and the lower spring seat; the adjusting screw rod is positioned at the top of the boosting adjusting valve, penetrates through the valve cover and abuts against the upper spring seat when moving downwards; the valve clack is arranged inside the valve body; the valve clack is sleeved with a spring B, the bottom of the valve body is provided with a spring seat, and the spring B is positioned between the spring seat and the valve clack; the pressing sleeve is positioned at the top end in the valve body and is in guide fixed fit with the valve clack; the pressing sleeve is in contact with the bottom of the lower spring seat. The utility model discloses a governing valve steps up, the valve clack can close fast and reset.

Description

Boost regulating valve

Technical Field

The utility model relates to the technical field of valves, specifically, relate to a governing valve steps up.

Background

The low-temperature boost regulating valve is widely applied in the field of industrial automation fluid, however, the current low-temperature boost regulating valve in China is mature, convenient to operate and quick to open and close, but is single in structural design.

Because the technology of the low-temperature boost regulating valve is more and more applied to various industries, the performance and the structure of the original traditional low-temperature boost regulating valve are continuously improved, and the development of a new product of the low-temperature boost regulating valve which meets the market requirements is not easy. A problem is encountered with the low temperature boost regulator valves commonly used today: the phenomenon of serious leakage of the valve caused by the fact that the material is not resistant to ultralow temperature often occurs in the operation of ultralow temperature media, and the requirement of the market is far met.

Through search, the following results are found:

the utility model discloses a grant publication number CN 203115201U's chinese utility model patent discloses a low temperature economizer system governing valve, including step-down export connector, auxiliary spring, valve body, first O type sealing washer, second O type sealing washer, the valve clack that steps up, the valve clack external seal circle that steps up, the valve clack internal seal circle that steps up, diaphragm, step-down valve clack sealing washer, spring seat, main spring, valve gap and adjusting screw, will step up and step down two big regulatory functions and combine together. However, the patent still has the following problems: the valve clack is not reset timely and quickly enough.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a governing valve steps up.

The utility model discloses a realize through following technical scheme:

according to the utility model discloses an aspect provides a governing valve steps up, should step up the governing valve and include: a valve body;

the spring A is arranged in the valve cover, an upper spring seat is arranged at the top end in the valve cover, a lower spring seat is arranged at the bottom end in the valve cover, and two ends of the spring A are respectively connected to the upper spring seat and the lower spring seat;

the adjusting screw rod is positioned at the top of the boosting adjusting valve, penetrates through the valve cover and abuts against the upper spring seat when moving downwards;

the valve clack is arranged inside the valve body; the valve clack is sleeved with a spring B, the bottom of the valve body is provided with a spring seat, and the spring B is positioned between the spring seat and the valve clack;

the pressing sleeve is positioned at the top end in the valve body and is fixedly matched with the valve clack in a guiding way; the pressing sleeve is in contact with the bottom of the lower spring seat.

Further, the valve body is an austenitic stainless steel CF8 valve body.

Further, the valve flap is an austenitic stainless steel 304 valve flap.

Furthermore, a valve clack sealing gasket is arranged between the valve clack and the valve body, and the valve clack sealing gasket is a sealing gasket formed by a polytetrafluoroethylene and molybdenum disulfide composite material.

Further, the adjusting screw is connected to the valve cover through an adjusting nut.

Further, the lower end of the valve body is provided with a lower valve cover.

Furthermore, welding heads are arranged at two ends of the pressure-boosting regulating valve and comprise connecting pipes and connecting nuts so as to facilitate the installation of the valve.

Compared with the prior art, the utility model discloses at least one's following beneficial effect has:

the pressure-boosting regulating valve of the utility model realizes the pressure-regulating function through the mutual cooperation among the regulating screw, the spring A, the pressure sleeve, the valve clack, the spring B and the like; and, because the utility model discloses a governing valve steps up adopts the dual spring structure for the valve clack can close more quickly and reset.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of the boost regulating valve according to an embodiment of the present invention.

In the figure: 1 is adjusting screw, 2 is adjusting nut, 3 is the upper spring seat, 4 is the valve gap, 5 is spring A,6 is lower spring seat, 7 is first hex bolts, 8 is first bullet pad, 9 is first flat pad, 10 is the copper diaphragm, 11 is the valve gap sealed pad, 12 is the valve clack, 13 is spring B,14 is seal gasket B,15 is the spring seat, 16 is lower valve gap, 17 is the second hex bolts, 18 is the second bullet pad, 19 is the second flat pad, 20 is the pressure cover, 21 is the valve body, 22 is the connecting pipe sealed pad, 23 is coupling nut, 24 is the connecting pipe.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that numerous variations and modifications could be made by those skilled in the art without departing from the spirit of the invention. All of which belong to the protection scope of the present invention.

The embodiment of the utility model provides a governing valve steps up, it is shown with reference to figure 1, should step up the governing valve and include: the valve comprises a valve body 21, a valve cover 4, an adjusting screw rod 1, a valve clack 12 and a pressing sleeve 20, wherein the valve clack 12 and the pressing sleeve 20 are arranged inside the valve body 21, a spring A5 is arranged in the valve cover 4, an upper spring seat 3 is arranged at the top end in the valve cover 4, a lower spring seat 6 is arranged at the bottom end in the valve cover 4, and two ends of the spring A5 are respectively connected to the upper spring seat 3 and the lower spring seat 6; the adjusting screw rod 1 is arranged at the top of the boosting adjusting valve and used for adjusting the required pressure; the adjusting screw rod 1 penetrates through the valve cover 4, and the adjusting screw rod 1 abuts against the upper spring seat 3 when moving downwards; the adjusting screw rod 1 is connected to the valve cover 4 through the adjusting nut 2; a spring B13 is sleeved on the valve clack 12, a spring seat 15 is arranged at the bottom of the valve body 21, the spring B13 is positioned between the spring seat 15 and the valve clack 12, one end of the spring B13 is fixed on the spring seat 15, the other end of the spring B13 is connected to the valve clack 12, and a movement space is provided for the valve clack 12 through the expansion and contraction of the spring B13, so that the valve clack 12 can be quickly closed and reset; the pressing sleeve 20 is positioned at the top end in the valve body 21; the valve clack 12 is positioned at the lower end of the pressing sleeve 20, the pressing sleeve 20 is in guide fixed fit with the valve clack 12, and the pressing sleeve 20 is contacted with the bottom of the lower spring seat 6; because the pressing sleeve 20 is fixedly matched with the valve clack 12 in a guiding way, the contact area of the pressing sleeve 20 is enlarged, so that the adjustment of the spring A5 is smoother, and the valve clack 12 can be quickly separated from the runner port when the pressing sleeve 20 moves downwards.

The low-temperature boosting regulating valve is of an upper and lower structure, and the built-in springs are connected in a bolt pressing mode; the pressure regulating function of the boosting regulating valve is realized through the valve body 21, the valve clack 12, the spring A5, the regulating screw rod 1 and the like, when the regulating screw rod 1 is rotated clockwise, pressure is exerted on the spring A5, the larger the force value generated by the spring A5 is, the larger the gap between the valve clack 12 and the valve body 21 is, and the larger the pressure value at the outlet is. Moreover, the use of the double spring structure enables the valve flap 12 to be reset more quickly.

In some embodiments, the valve body 21 is an austenitic stainless steel CF8 valve body, which can sufficiently withstand expansion and contraction caused by changes at ultra-low temperatures; the valve clack 12 is an austenitic stainless steel 304 valve clack, a valve clack sealing gasket is arranged between the valve clack 12 and the valve body 21, and the valve clack sealing gasket is a sealing gasket formed by polytetrafluoroethylene and molybdenum disulfide composite materials, so that the pressure boosting regulating valve can operate under the ultralow temperature condition and is mainly used on tanks such as a cryogenic fluid medium storage tank from-40 ℃ to-196 ℃, and the pressure is regulated and controlled within a specified pressure value range.

In some embodiments, the valve cap 4 is fixedly connected with the valve body 21 through a first hexagon bolt 7, a first elastic gasket 8 and a first flat gasket 9, a copper diaphragm 10 and a valve cap sealing gasket 11 are arranged between the valve cap 4 and the valve body 21, and a sealing gasket B14 between the valve clack 12 and the spring seat 15 is arranged to achieve a better sealing effect; the lower end of the valve body 21 is provided with a lower valve cover 16, and the lower valve cover 16 is fixedly connected with the valve body 21 through a second hexagon bolt 17, a second elastic cushion 18 and a second flat cushion 19. The both ends of the pressure-increasing regulating valve are provided with welding heads, the welding heads comprise connecting pipes 24 and connecting nuts 23, the installation of the valve can be facilitated through the welding heads, and connecting pipe sealing gaskets 22 are further arranged between the connecting pipes 24 and the valve body so as to effectively seal a medium and prevent leakage.

The working principle of the valve is as follows: the low temperature governing valve that steps up relies on built-in spring A5 to adjust the pressure of valve, need step up when medium pressure is less than the setting value in the storage tank and come the stable pressure value, adjusting screw 1 through the rotatory valve top is under the effect of spring extension pressure this moment, make valve clack 12 break away from the runner port, and flexible through spring B13 provides the space of motion for valve clack 12, structure through the double spring makes valve clack 12 can close fast and reset, the medium flows out from the storage tank bottom and gasifies through the liquid repressurization after the governing valve decompression that steps up, the medium gets into the storage tank top after the gasification, reach the purpose of the required setting value that steps up with this circulation.

In the boost regulating valve in the embodiment, all parts of the valve are specially treated at low temperature, so that the boost regulating valve can run at ultralow temperature. The low-temperature boosting regulating valve mainly depends on a built-in spring to regulate the pressure of the valve, the pressure of a medium in the storage tank needs to be boosted to stabilize the pressure value when the pressure of the medium is lower than a set value, at the moment, the valve core is separated from a runner port under the action of the expansion pressure of the spring by rotating the regulating screw 1 at the top of the valve, the medium flows out from the bottom of the storage tank, liquid is pressurized and gasified after the pressure of the medium is reduced by the boosting regulating valve, and the gasified medium enters the top of the storage tank to circularly reach the set value required for boosting.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the essential spirit of the invention.

Claims

1. A boost regulator valve, comprising:

a valve body;

the pressing sleeve is positioned at the top end in the valve body and is in guide fixed fit with the valve clack; the pressing sleeve is in contact with the bottom of the lower spring seat.

2. The boost regulator valve of claim 1, wherein the valve body is an austenitic stainless steel CF8 valve body.

3. The boost regulator valve of claim 1, wherein the flap is an austenitic stainless steel 304 flap.

4. The boost regulator valve of claim 1, wherein a valve flap sealing gasket is disposed between the valve flap and the valve body, and the valve flap sealing gasket is a sealing gasket formed by a polytetrafluoroethylene and molybdenum disulfide composite material.

5. A booster regulator valve as set forth in claim 1 wherein said adjustment screw is connected to said valve cap by an adjustment nut.

6. A booster regulator valve according to claim 1 wherein the lower end of the valve body is provided with a lower bonnet.

7. A booster regulator valve as defined in claim 1 wherein said booster regulator valve has weld joints at both ends, said weld joints comprising a connecting tube and a connecting nut to facilitate installation of the valve.