CN-224214788-U - Ultralow temperature stop valve with pressure relief device

CN224214788UCN 224214788 UCN224214788 UCN 224214788UCN-224214788-U

Abstract

The utility model discloses an ultralow temperature stop valve with a pressure relief device, and relates to the technical field of ultralow temperature stop valves of pressure relief devices. The ultralow temperature stop valve with the pressure relief device comprises a valve body main body, a cold-resistant protection sheet, a protection shell and a limiting unit. This take pressure relief device's ultralow temperature stop valve adopts the structure that sets up cold-resistant protection unit in valve body main part outside, and first protective layer adopts stainless steel as the material, is convenient for provide physical protection, resists external impact, and the second protective layer adopts polyurethane foam as the material, and it has excellent thermal insulation performance and mechanical strength, can effectively isolate external low temperature environment to the influence of valve, and the third protective layer adopts aluminium silicate fiber felt material, and it has low coefficient of heat conductivity and good pliability, and cold-resistant protection unit can play protection and heat retaining purpose to the valve body main part.

Inventors

YANG XIAOLUN
LI QIANG
WANG ZHEMEI
YANG KAIHONG
QUAN ZHIHUI
ZHAO LI
ZHAO JIDONG

Assignees

浙江安腾阀门有限公司

Dates

Publication Date: 20260508
Application Date: 20250526

Claims (8)

1. Take pressure relief device's ultra-low temperature stop valve, its characterized in that includes: A valve body (1); The cold-resistant protection unit (3) comprises a first protection layer (31) arranged outside the valve body main body (1), the cold-resistant protection unit (3) is convenient for protecting and preserving the heat of the valve body main body (1), and a fixed block (312) is fixedly connected to the front surface of the first protection layer (31); a protective shell (2) provided with a third protective layer (33); And the limiting unit (4) is arranged in the fixed block (312), and the limiting unit (4) is used for limiting the protective shell (2).
2. The ultra-low temperature cut-off valve with pressure relief device according to claim 1, wherein the cold-resistant protection unit (3) further comprises: a second protective layer (32) fixedly connected to the inner wall of the first protective layer (31); And a third protective layer (33) fixedly connected to the inner wall of the second protective layer (32).
3. The ultra-low temperature cut-off valve with pressure relief device according to claim 1, characterized in that the limit unit (4) comprises: A spring main body (41) one end of which is fixedly connected to the inner wall of the fixed block (312); and the sliding block (42) is connected in the fixed block (312) in a sliding way, and the other end of the spring main body (41) is fixedly connected to the sliding block (42).
4. The ultralow temperature stop valve with the pressure relief device according to claim 3, wherein one end of the sliding block (42) far away from the spring main body (41) is fixedly connected with a clamping block (43), and the clamping block (43) is clamped in the protective shell (2).
5. The ultralow temperature stop valve with the pressure relief device according to claim 1, wherein the front surface of the first protection layer (31) is fixedly connected with a connecting piece (311), and a notch (313) is arranged in the cold-resistant protection unit (3).
6. The ultra-low temperature stop valve with the pressure relief device according to claim 5, wherein an adjusting piece (21) is fixedly connected to the bottom of the protective shell (2), and the adjusting piece (21) is rotatably connected to the connecting piece (311).
7. The ultralow temperature stop valve with the pressure relief device according to claim 1, wherein the valve body (1) is provided with a needle valve (12) and a pilot valve (13), a guide pipe (14) is communicated with the outside of the valve body (1), and the guide pipe (14) is communicated with the needle valve (12) and the pilot valve (13).
8. The ultra-low temperature stop valve with the pressure relief device according to claim 1, wherein connecting flanges (11) are fixedly connected to two sides of the valve body main body (1).

Description

Ultralow temperature stop valve with pressure relief device Technical Field The utility model relates to the technical field of ultralow temperature stop valves of pressure relief devices, in particular to an ultralow temperature stop valve with a pressure relief device. Background The ultra-low temperature stop valve with the pressure relief device is specially designed for an extreme low temperature environment, is commonly used in low temperature industries such as liquefied natural gas, liquefied petroleum gas and the like, can rapidly relieve pressure when the pressure of the inlet end is overlarge, and ensures the safe and stable operation of the system. The existing ultralow temperature stop valve with the pressure relief device is partially matched with the pilot valve through the needle valve in a cooperative manner, after parameters are set, the aim of quick pressure relief can be achieved, the safe and stable operation of the system is guaranteed, however, the guide pipe and the control handle of the ultralow temperature stop valve with the pressure relief device are exposed, when the ultralow temperature stop valve with the pressure relief device is installed outdoors in a cold state, the control handle is easily touched by mistake, the set parameters are changed, the frequent debugging is time-consuming and labor-consuming, and on the other hand, the guide pipe is mostly copper pipes and is easy to damage when being collided. Aiming at the defects of the prior art, the utility model provides an ultralow temperature stop valve with a pressure relief device so as to solve the problems. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the ultralow temperature stop valve with the pressure relief device, and solves the problems that the control handle is easy to be touched by mistake, the set parameters are changed, frequent debugging is time-consuming and labor-consuming, the guide pipe is mostly copper pipe, and the guide pipe is easy to damage when being collided. The utility model is realized by the following technical scheme that the ultra-low temperature stop valve with the pressure relief device comprises: a valve body; The cold-resistant protection unit comprises a first protection layer arranged outside the valve body main body, the cold-resistant protection unit is convenient for protecting and insulating the valve body main body, and the front surface of the first protection layer is fixedly connected with a fixing block; a protective shell provided with a third protective layer; The limiting unit is arranged in the fixed block and used for limiting the protective shell. Preferably, the cold-resistant protection unit further comprises: The second protective layer is fixedly connected to the inner wall of the first protective layer; and the third protection layer is fixedly connected to the inner wall of the second protection layer. Preferably, the limiting unit includes: one end of the spring main body is fixedly connected to the inner wall of the fixed block; the sliding block is connected in the fixed block in a sliding way, and the other end of the spring main body is fixedly connected to the sliding block. Preferably, one end of the sliding block, which is far away from the spring main body, is fixedly connected with a clamping block, and the clamping block is clamped in the protective shell. Preferably, the front surface of the first protection layer is fixedly connected with a connecting piece, and a notch is formed in the cold-resistant protection unit. Preferably, the bottom of the protective shell is fixedly connected with an adjusting piece, and the adjusting piece is rotationally connected in the connecting piece. Preferably, the valve body is provided with a needle valve and a pilot valve, the outside of the valve body is communicated with a guide pipe, and the guide pipe is communicated with the needle valve and the pilot valve. Preferably, the two sides of the valve body main body are fixedly connected with connecting flanges. The utility model discloses an ultralow temperature stop valve with a pressure relief device, which has the following beneficial effects: This take pressure relief device's ultralow temperature stop valve adopts the structure that sets up cold-resistant protection unit in valve body main part outside, and first protective layer adopts stainless steel as the material, is convenient for provide physical protection, resists external impact, and the second protective layer adopts polyurethane foam as the material, and it has excellent thermal insulation performance and mechanical strength, can effectively isolate external low temperature environment to the influence of valve, and the third protective layer adopts aluminium silicate fiber felt material, and it has low coefficient of heat conductivity and good pliability, and cold-resistant protection unit can play protection and heat retaining purpose to valve b