JP-7857406-B2 - Stop valve and its cooling system

JP7857406B2JP 7857406 B2JP7857406 B2JP 7857406B2JP-7857406-B2

Inventors

楼峰
馮光華
周峰
寿傑

Assignees

浙江盾安人工環境股▲ふん▼有限公司

Dates

Publication Date: 20260512
Application Date: 20221129
Priority Date: 20211218

Claims (7)

A hollow valve body having a valve seat inside, the valve seat having a valve opening, A valve core, at least a portion of which is provided inside the valve body and which is movable along the axial direction of the valve body to seal or open the valve opening, The valve core includes a connecting portion and a guide portion connected to each other, the guide portion is provided at one end of the connecting portion adjacent to the valve opening and can enter into the valve opening, a third sealing member is provided at the end of the connecting portion adjacent to the guide portion, the third sealing member can abut against the valve seat, and at least a portion of the guide portion is supported in contact with the third sealing member. The inner diameter of the valve opening is provided to correspond to the outer diameter of the guide portion, and the outer wall of the guide portion abuts against the inner wall of the valve opening . A first groove is provided on one side of the connecting portion facing the guide portion, and the third sealing member is provided within the first groove. The base end edge of the guide portion, which is on the connection side, is positioned on the surface of the third sealing member provided in the first groove. The area of the guide portion that contacts and is supported by the third sealing member accounts for 30% to 40% of the area of the surface of the third sealing member facing the valve opening. A stop valve in which, when the third sealing member is in contact with the end face of the valve seat toward the connection portion, the depth to which the guide portion enters the valve opening is at least 1 mm .
The stop valve according to claim 1, wherein the guide portion and the connecting portion are provided separately.
A second groove is provided on one side of the connecting portion facing the guide portion, the guide portion includes a first segment and a projection, the first segment is provided at one end of the projection facing the connecting portion and is fitted into the second groove and connected to the inner wall of the second groove, and the projection is connected to one side of the first segment away from the connecting portion and can enter the valve opening, as described in claim 2 .
A second groove is provided on one side of the guide portion facing the connection portion, and one end of the connection portion is fitted into the second groove and connected to the inner wall of the second groove, as described in claim 2 .
The stop valve according to claim 3 , wherein a second groove is provided on one side of the connecting portion facing the guide portion, and the guide portion is pin-connected or screwed into the inner wall of the second groove.
A second groove is formed on one side of the guide portion facing the connection portion, and the connection portion is pin-connected or screwed into the inner wall of the second groove, as described in claim 4 .
The stop valve according to claim 1, wherein the material of the third sealing member is pure copper or plastic.

Description

Related Application This application claims priority to a Chinese patent application filed on 18 December 2021, application number 202123218681.3, with the title of the invention "Stop Valve and Cooling System therefor," the entire contents of which are incorporated into this application by reference. This application relates to the technical field of cooling, and more particularly to shut-off valves and their cooling systems. In cooling systems, shut-off valves play a crucial role in cutting off and restricting the flow of the medium in the pipeline they are located in. The valve's opening and closing component is the valve core, and it is primarily used for blocking the flow of the medium in low-temperature environments. In conventional shut-off valves, a single-line hard seal is often achieved by pressing the valve core and valve seat against each other. Achieving this single-line hard seal requires the use of soft materials for the valve core and valve seat; otherwise, sealing failures and leaks are likely to occur, thus limiting the application of conventional shut-off valves. This application provides a stop valve, and the technical aspects are as follows: A shut-off valve comprising: a hollow valve body having a valve seat inside, the valve seat having a valve opening; and a valve core, at least a portion of which is provided inside the valve body and movable along the axial direction of the valve body to seal or release the valve opening, wherein the valve core includes a connecting portion and a guide portion connected to each other, the guide portion being provided at one end of the connecting portion adjacent to the valve opening and capable of entering into the valve opening, a third sealing member being provided at the other end of the connecting portion adjacent to the guide portion, the third sealing member being capable of contacting the valve seat, and the guide portion being at least a portion of which is in contact with and supported by the third sealing member. This design restricts the third sealing member to the inside of the connection point by having the guide section, thus avoiding the problem of the third sealing member easily falling off. In one embodiment, the area of the guide portion that contacts and is supported by the third sealing member accounts for 15% to 50% of the area of the side surface of the third sealing member facing the valve opening. This design ensures that the guide portion provides a limiting force on the third sealing member, preventing the third sealing member from falling off. Furthermore, it saves material in the guide portion while simultaneously providing sufficient space for the third sealing member to contact the valve seat. In one embodiment, the area of the guide portion that contacts and is supported by the third sealing member accounts for 30% to 40% of the area of the side surface of the third sealing member facing the valve opening. In one embodiment, the guide portion and the connecting portion are provided as separate components. With this design, the guide section can be assembled after the third sealing member is installed and then supported against the third sealing member. Furthermore, by providing them as separate components, the connection section and the guide section can be machined separately, reducing the amount of material removed and improving machining efficiency. In one embodiment, a second groove is provided on one side of the connecting portion facing the guide portion. The guide portion includes a first segment and a projection. The first segment is provided at one end of the projection facing the connecting portion and is fitted into the second groove, connected to the inner wall of the second groove. The projection is connected to one side of the first segment away from the connecting portion and can enter the valve opening. In one embodiment, a second groove is provided on one side of the guide portion facing the connection portion, and one end of the connection portion is fitted into the second groove and connected to the inner wall of the second groove. In one embodiment, a second groove is provided on one side of the connecting portion facing the guide portion, and the guide portion is pin-connected or screwed into the inner wall of the second groove. In one embodiment, a second groove is drilled on one side of the guide portion facing the connection portion, and the connection portion is pin-connected or screwed into the inner wall of the second groove. This design ensures the connection strength between the guide portion and the second groove through pin connection or screwing, and its detachability facilitates the removal and installation of the third sealing member. In one embodiment, when the third sealing member abuts against the end face of the valve seat facing the connection portion, the depth to which the guide portion enters the valve opening is at least 1 mm. This design ensures sufficient engagement strength