CN218954129U

CN218954129U - Ultralow temperature high pressure relief valve

Info

Publication number: CN218954129U
Application number: CN202222328605.6U
Authority: CN
Inventors: 张晶晶; 许文义; 鄢小琼
Original assignee: Sichuan Lantian Cryogenic Technology Develop Co ltd
Current assignee: Sichuan Lantian Cryogenic Technology Develop Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-05-02
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses an ultralow temperature high pressure safety valve, which comprises a shell mechanism and a movable mechanism, wherein the movable mechanism is movably connected to the inside of the shell mechanism, an inlet connecting pipe is fixedly connected to the bottom of the shell mechanism, an inlet connecting pipe nut is rotatably connected to the surface of the inlet connecting pipe, a valve seat is fixedly connected to the top of the inlet connecting pipe, a valve seat cushion is fixedly connected to the surface of the top of the valve seat, and a locking screw is in threaded connection with the left side of the shell mechanism. In the utility model, the valve top is connected with the valve top sleeve in a loop mode, the valve sealing performance is good, the valve top sleeve can be automatically aligned when rebound occurs even if guide deviation occurs, the valve sealing is more stable, the sealing effect is improved, the top of the valve is provided with the cover, the bottom of the cover is provided with the locking pad, the pressure of the spring is controlled by adjusting the height of the cover, the valve top and the valve seat are made of build-up cobalt-based alloy, the impact force of the seat returning after the valve is lifted is ensured not to damage the sealing pair, and the valve top is also higher in wear resistance and corrosion resistance.

Description

Ultralow temperature high pressure relief valve

Technical Field

The utility model relates to the technical field of safety valves, in particular to an ultralow-temperature high-pressure safety valve.

Background

The safety valve is normally closed under the action of external force, and when the pressure of medium in the equipment or pipeline is raised to be higher than that of the medium

When the pressure exceeds the specified value, the special valve for preventing the pressure of the medium in the pipeline or the equipment from exceeding the specified value is discharged to the outside of the system, and the safety valve belongs to automatic valves and is mainly used on boilers, pressure vessels and pipelines, and the control pressure does not exceed the specified value, so that the safety valve plays an important role in protecting personal safety and equipment operation.

The prior art discloses the application number: the utility model provides a spring-type relief valve of 201320244213.X, includes valve gap, spring, valve body, case, disk seat upper end integral type connect the valve body, the valve body upper end passes through lock nut installation valve gap, the valve body is inside to be equipped with the case and to arrange the disk seat top in, installs spring washer and case gland in proper order between case and the disk seat, the case passes spring washer and case gland and disk seat through the screw to be fixed, is equipped with the spring between case and the valve gap, the copper screw is installed on valve body upper portion. The valve body is provided with a plurality of through holes. The utility model has the following advantages: the spring has the advantages that the structural design is reasonable, the spring gasket, the sealing ring and the valve core gland are sequentially arranged between the firm and durable valve seat and the valve core, the tightness is strong, air leakage is effectively prevented when the opening pressure is not reached, the safety is high, the spring has good elastic pressure, the pressure relief effect can be well achieved, the surface of the spring is galvanized, and the spring has attractive appearance and rust prevention functions.

However, the existing device has the following defects that firstly, due to a certain movable space in the device, when the valve rebounds, deviation of the guide of the valve core possibly occurs, so that the valve cannot be sealed stably, the sealing effect is poor, secondly, the spring pitch of the spring in the device cannot be adjusted, and the pressure cannot be adjusted in the face of different working conditions, and the situations of low flow speed and the like possibly occur.

Disclosure of Invention

The utility model aims to solve the problems of guide deviation and incapability of adjusting pressure in the prior art, and provides an ultralow-temperature high-pressure safety valve.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the ultra-low temperature high pressure safety valve comprises a shell mechanism and a movable mechanism, wherein the movable mechanism is movably connected to the inside of the shell mechanism.

The shell mechanism comprises an inlet connecting pipe, an inlet connecting pipe nut, a valve seat cushion, a locking screw, a locking pad, a valve body pad, a valve cover pad, a cover, an outlet connecting pipe and an outlet connecting pipe nut, wherein the inlet connecting pipe is fixedly connected to the bottom of the shell mechanism, the inlet connecting pipe nut is rotationally connected to the surface of the inlet connecting pipe, the valve seat cushion is fixedly connected to the top of the inlet connecting pipe, the valve seat cushion is fixedly connected to the surface of the top of the valve seat, the locking screw is in threaded connection to the left side of the shell mechanism, the locking pad is fixedly connected to the surface of the locking screw, the valve body pad is fixedly connected to the bottom of the valve cover, the valve cover is fixedly connected to the top of the valve cover, the outlet connecting pipe is fixedly connected to the right side of the shell mechanism, and the outlet connecting pipe nut is rotationally connected to the surface of the outlet connecting pipe.

Preferably, the movable mechanism comprises a first gasket, a recoil disc, a valve top sleeve, a lower spring seat, a spring, a valve rod, an upper spring seat, an adjusting screw sleeve, a locking ring, a gasket, a valve top and a second gasket, wherein the first gasket is fixedly connected to the top of the valve seat, the recoil disc is fixedly connected to the bottom of the valve top, the valve top sleeve is sleeved on the top of the valve top, the lower spring seat is slidably connected to the surface of the lower end of the valve rod, the spring is fixedly connected to the inside of a valve cover, the valve rod is fixedly connected to the inside of the valve cover, the upper spring seat is fixedly connected to the top of the valve rod, the adjusting screw sleeve is in threaded connection with the inside of the cover, the locking ring is fixedly connected to the surface of the upper end of the valve rod, the gasket is fixedly connected to the inside of the upper end of the valve top sleeve, the valve top is spliced in the inside of the valve top sleeve, and the second gasket is fixedly connected to the right side of an outlet connecting pipe.

Preferably, the medium flow direction is the direction from the inlet connecting pipe to the valve top, and pressure is applied from bottom to top to jack up the valve top sleeve.

Preferably, the valve top and the valve seat are made of build-up welding cobalt-based alloy, so that impact force of returning to the valve seat after the valve is tripped can not damage a sealing pair, and the valve top and the valve seat have higher wear resistance and corrosion resistance.

Preferably, the bottom of cover protrusion just bulge length is eleven centimetres in the inside of valve gap, is convenient for adjust the height, realizes pressure regulation and control.

Preferably, the bottom of the valve cover is provided with a rectangular cavity, and the right side of the rectangular cavity is connected with the outlet connecting pipe to play a role in diversion.

Preferably, the top of the valve top sleeve is provided with a groove, the diameter of the groove is equal to the diameter of the lower end of the valve rod, and the valve rod is prevented from having guiding deviation.

Compared with the prior art, the utility model has the beneficial effects that;

1. in the utility model, the valve top is connected with the valve top sleeve in a loop mode, the valve has good sealing performance, and the valve top sleeve can be automatically aligned when rebounding even if the valve top sleeve has guiding deviation, so that the valve is sealed more stably, and the sealing effect is improved.

2. In the utility model, the top of the valve is provided with the cover, the bottom of the cover is provided with the locking pad, the pressure of the spring is controlled by adjusting the height of the cover, the material of the valve top and the valve seat is build-up cobalt-based alloy, the impact force of the valve returning to the seat after taking off is ensured not to damage the sealing pair, and the valve has higher wear resistance and corrosion resistance.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the front internal structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 3 is a schematic view of a spring structure according to the present utility model;

FIG. 4 is a schematic view of the valve top of the present utility model in a disassembled configuration.

Legend description:

1. a housing mechanism; 101. an inlet connection pipe; 102. an inlet nipple nut; 103. a valve seat; 104. a valve seat cushion; 105. a locking screw; 106. a locking pad; 107. a valve body pad; 108. a valve cover; 109. a valve cover pad; 110. a cover; 111. an outlet connection pipe; 112. an outlet nipple nut; 2. a movable mechanism; 201. a first gasket; 202. a recoil disc; 203. a valve top sleeve; 204. a lower spring seat; 205. a spring; 206. a valve stem; 207. an upper spring seat; 208. adjusting the screw sleeve; 209. a locking ring; 210. Pad 211, valve top; 212. and a second gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-4, the present utility model provides a technical solution: an ultralow-temperature high-pressure safety valve comprises a shell mechanism 1 and a movable mechanism 2, wherein the movable mechanism 2 is movably connected inside the shell mechanism 1.

The shell mechanism 1 comprises an inlet connecting pipe 101, an inlet connecting pipe nut 102, a valve seat 103, a valve seat cushion 104, a locking screw 105, a locking pad 106, a valve body pad 107, a valve cover 108, a valve cover pad 109, a cover 110, an outlet connecting pipe 111 and an outlet connecting pipe nut 112, wherein the inlet connecting pipe 101 is fixedly connected to the bottom of the shell mechanism 1, the inlet connecting pipe nut 102 is rotationally connected to the surface of the inlet connecting pipe 101, the valve seat 103 is fixedly connected to the top of the inlet connecting pipe 101, the valve seat cushion 104 is fixedly connected to the surface of the top of the valve seat 103, the locking screw 105 is in threaded connection with the left side of the shell mechanism 1, the locking pad 106 is fixedly connected to the surface of the locking screw 105, the valve body pad 107 is fixedly connected to the bottom of the valve cover 108, the valve cover pad 109 is fixedly connected to the top of the valve cover 108, a rectangular cavity is formed in the bottom of the valve cover 108, the right side of the rectangular cavity is connected to the outlet connecting pipe 111, the flow guiding function is achieved, the bottom of the cover 110 is fixedly connected to the top of the valve cover 108, the bottom of the cover 110 protrudes inside the valve cover 108 and the protruding length is eleven cm, the height is convenient to adjust, the pressure regulation is realized, the outlet connecting pipe 111 is fixedly connected to the right side of the shell mechanism 1, the surface of the outlet connecting pipe nut 112 is rotationally connected to the surface of the outlet connecting pipe 111.

The movable mechanism 2 consists of a first gasket 201, a recoil disc 202, a valve top sleeve 203, a lower spring seat 204, a spring 205, a valve rod 206, an upper spring seat 207, an adjusting screw sleeve 208, a locking ring 209, a pad 210, a valve top 211 and a second gasket 212, wherein the first gasket 201 is fixedly connected to the top of the valve seat 103, the recoil disc 202 is fixedly connected to the bottom of the valve top 211, the valve top sleeve 203 is sleeved on the top of the valve top 211, the lower spring seat 204 is slidably connected to the surface of the lower end of the valve rod 206, the spring 205 is fixedly connected to the inside of the valve cover 108, the valve rod 206 is fixedly connected to the inside of the valve cover 108, a groove is formed in the top of the valve top sleeve 203, the diameter of the groove is equal to the diameter of the lower end of the valve rod 206, prevent that valve rod 206 from appearing the direction deviation, upward spring holder 207 fixed connection is in the top of valve rod 206, adjusting screw sleeve 208 threaded connection is in the inside of cover 110, locking ring 209 fixed connection is in the surface of valve rod 206 upper end, pad 210 fixed connection is in the inside of valve top cover 203 upper end, valve top 211 is pegged graft in the inside of valve top cover 203, the medium flow direction is the direction of import takeover 101 to valve top 211, exert pressure from bottom to top, jack-up valve top cover 203, the material of valve top 211 and disk seat 103 is the build-up welding cobalt-based alloy, ensure that valve back seat impact force can not damage sealed pair after taking-off, also have higher wear and corrosion resistance simultaneously, second gasket 212 fixed connection is in the right side of export takeover 111

When the pressure is reduced, the spring 205 drives the valve top sleeve 203 and the valve top 211 downwards by taking the cover 110 as a fulcrum to be sleeved and connected, so that the closing is realized.

Claims

1. The utility model provides an ultra-low temperature high pressure relief valve, includes shell mechanism (1) and movable mechanism (2), its characterized in that: the movable mechanism (2) is movably connected to the inside of the shell mechanism (1);

the shell mechanism (1) comprises an inlet connecting pipe (101), an inlet connecting pipe nut (102), a valve seat (103), a valve seat cushion (104), a locking screw (105), a locking pad (106), a valve body pad (107), a valve cover (108), a valve cover pad (109), a cover (110), an outlet connecting pipe (111) and an outlet connecting pipe nut (112), wherein the inlet connecting pipe (101) is fixedly connected to the bottom of the shell mechanism (1), the inlet connecting pipe nut (102) is rotationally connected to the surface of the inlet connecting pipe (101), the valve seat (103) is fixedly connected to the top of the inlet connecting pipe (101), the valve seat cushion (104) is fixedly connected to the surface of the top of the valve seat (103), the locking screw (105) is in threaded connection with the left side of the shell mechanism (1), the locking pad (106) is fixedly connected to the surface of the locking screw (105), the valve body pad (107) is fixedly connected to the bottom of the valve cover (108), the top of the valve cover (109) is fixedly connected to the valve cover (108), the top of the cover (110) is fixedly connected to the top of the valve cover (108), the outlet (111) is fixedly connected to the surface of the valve cover (111), and the surface of the valve seat (111) is fixedly connected to the surface of the valve seat (112).

2. The ultra-low temperature and high pressure relief valve according to claim 1 wherein: the movable mechanism (2) consists of a first gasket (201), a recoil disc (202), a valve top sleeve (203), a lower spring seat (204), a spring (205), a valve rod (206), an upper spring seat (207), an adjusting screw sleeve (208), a locking ring (209), a gasket (210), a valve top (211) and a second gasket (212), wherein the first gasket (201) is fixedly connected to the top of the valve seat (103), the recoil disc (202) is fixedly connected to the bottom of the valve top (211), the valve top sleeve (203) is sleeved on the top of the valve top (211), the lower spring seat (204) is slidably connected to the surface of the lower end of the valve rod (206), the spring (205) is fixedly connected to the inside of the valve cover (108), the valve rod (206) is fixedly connected to the inside of the valve cover (108), the upper spring seat (207) is fixedly connected to the top of the valve rod (206), the adjusting screw sleeve (208) is in threaded connection to the inside of the cover (110), the locking ring (209) is fixedly connected to the surface of the upper end of the valve top (206), the gasket (210) is fixedly connected to the inside the valve top (203) and the valve top (203) is fixedly connected to the inside of the valve top (203), the second gasket (212) is fixedly connected to the right side of the outlet connection pipe (111).

3. The ultra-low temperature and high pressure relief valve according to claim 1 wherein: the medium flow direction is the direction from the inlet connection (101) to the valve head (211).

4. The ultra-low temperature and high pressure relief valve according to claim 2 wherein: the valve top (211) and the valve seat (103) are made of build-up welding cobalt-based alloy.

5. The ultra-low temperature and high pressure relief valve according to claim 1 wherein: the bottom of the cover (110) protrudes inside the valve cover (108) and has a protruding length of eleven centimeters.

6. The ultra-low temperature and high pressure relief valve according to claim 1 wherein: the bottom of the valve cover (108) is provided with a rectangular cavity, and the right side of the rectangular cavity is connected with an outlet connecting pipe (111).

7. The ultra-low temperature and high pressure relief valve according to claim 2 wherein: the top of the valve top sleeve (203) is provided with a groove, and the diameter of the groove is equal to the diameter of the lower end of the valve rod (206).