A valve seat with pressure relief function, ball valve

Abstract

The utility model discloses a valve seat, ball valve with pressure relief function, wherein, valve seat with pressure relief function contains: valve seat support ring, valve seat support ring sets up in the ball valve of outside, one side of valve seat support ring is equipped with pressure relief hole, and the other side of valve seat is equipped with pressure relief groove, and pressure relief groove communicates with pressure relief hole, adjustable pressure relief module, adjustable pressure relief module sets up in pressure relief groove, is used for when the valve cavity of ball valve reaches setting pressure value, lets pressure relief groove and pressure relief hole be in the intercommunication state, carries out pressure relief, when the valve cavity of ball valve does not reach setting pressure value, lets pressure relief groove and pressure relief hole be in the non -intercommunication state, does not carry out pressure relief, in the utility model, pressure relief pressure can be adjusted, can be based on the working condition of customer use, and the pressure relief pressure of self -defined adjustment meets the use demand of user.

Description

Technical Field

[0001] This utility model relates to the field of ball valve safety pressure relief technology, and in particular to a valve seat and ball valve with pressure relief function. Background Technology

[0002] Traditional stationary ball valves generally perform well in water, oil, and gas media. Design standards require that when the valve is in an open or closed state for a long time, the sealed space of the cavity should be depressurized when it exceeds 1.33 times PN to ensure the safety of the valve body.

[0003] However, in actual use, there are some special operating conditions that require users to specify the pressure relief pressure. But currently, the pressure relief pressure of ball valves is fixed and not adjustable, which cannot meet the needs of special operating conditions or users' custom pressure relief settings. Summary of the Invention

[0004] According to an embodiment of the present invention, a valve seat with a pressure relief function is provided, comprising:

[0005] A valve seat support ring is installed inside the external ball valve. One side of the valve seat support ring is provided with a pressure relief hole, and the other side of the valve seat support ring is provided with a pressure relief groove, which is connected to the pressure relief hole.

[0006] The adjustable pressure relief module is installed in the pressure relief groove. When the valve cavity of the ball valve reaches the set pressure value, the pressure relief groove and the pressure relief hole are connected to release pressure. When the valve cavity of the ball valve does not reach the set pressure value, the pressure relief groove and the pressure relief hole are disconnected to prevent pressure relief.

[0007] Furthermore, the adjustable pressure relief module includes:

[0008] Locking nut, the outer surface of the locking nut is threaded to the inner wall of the pressure relief groove;

[0009] The steel ball is located inside the pressure relief groove.

[0010] The elastic element is located inside the pressure relief groove and between the steel ball and the locking nut. It applies elastic force to the steel ball, causing the steel ball to block the connection between the pressure relief groove and the pressure relief hole.

[0011] Furthermore, the elastic element is a spring.

[0012] Furthermore, the locking nut is an internal hexagonal nut.

[0013] According to a second aspect of the present invention, a ball valve is provided, comprising a valve seat with a pressure relief function as described in the first aspect.

[0014] According to an embodiment of the present invention, a valve seat with a pressure relief function has an adjustable pressure relief pressure. The pressure relief pressure can be customized based on the customer's working conditions to meet the user's needs.

[0015] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of a valve seat with pressure relief function installed in a ball valve according to an embodiment of the present invention.

[0017] Fig. 2 This is a cross-sectional view of a locking nut in a valve seat with a pressure relief function according to an embodiment of the present invention.

[0018] Fig. 3 This is a schematic diagram of the main structure of a locking nut in a valve seat with a pressure relief function according to an embodiment of the present invention. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0020] First, combine Figs. 1-3 This invention describes a valve seat with a pressure relief function, which is used to be installed inside a ball valve to relieve pressure in the valve cavity of the ball valve and has a wide range of applications.

[0021] like Figs. 1-3 As shown, an embodiment of the present invention provides a valve seat with a pressure relief function, comprising a valve seat support ring 100 and an adjustable pressure relief module.

[0022] Specifically, such as Figs. 1-3 As shown, the valve seat support ring 100 is installed inside the external ball valve. One side of the valve seat support ring 100 is provided with a pressure relief hole 101, and the other side of the valve seat support ring 100 is provided with a pressure relief groove 102, which is connected to the pressure relief hole 101.

[0023] Specifically, such as Figs. 1-3As shown, the adjustable pressure relief module is installed in the pressure relief groove 102. When the valve chamber of the ball valve reaches the set pressure value, the pressure relief groove 102 and the pressure relief hole 101 are connected to release pressure. When the valve chamber of the ball valve does not reach the set pressure value, the pressure relief groove 102 and the pressure relief hole 101 are disconnected, and no pressure is released. The adjustable pressure relief module includes: a locking nut 201, a steel ball 202, and an elastic element 203. The outer surface of the locking nut 201 is threaded to the inner wall of the pressure relief groove 102. The locking nut 201 is an internal hexagonal nut, which makes it easy to tighten the locking nut 201. The steel ball 202 is located inside the pressure relief groove 102. The elastic element 203 is located inside the pressure relief groove 102 and between the steel ball 202 and the locking nut 201. The elastic element 203 is a spring that applies elastic force to the steel ball 202, so that the steel ball 202 blocks the connection between the pressure relief groove 102 and the pressure relief hole 101.

[0024] When it is necessary to adjust the pressure relief, the locking nut 201 can be turned to adjust its position in the pressure relief groove 102, thereby controlling the elastic force of the elastic element 203 and adjusting the pressure relief value.

[0025] After the pressure relief value is set, when the valve cavity of the ball valve experiences an abnormal pressure increase and the pressure value reaches the set value, the steel ball 202 compresses the elastic element 203 under the pressure. The pressure medium will pass through the pressure relief hole 101, and then sequentially through the pressure relief groove 102, the hollow part of the locking nut 201, and the gap between the valve seat support ring 100 and the valve body to complete the pressure relief.

[0026] As described above, in a valve seat with a pressure relief function according to an embodiment of the present invention, the pressure relief pressure is adjustable and can be customized based on the customer's working conditions to meet the user's needs.

[0027] The above combined with the appendix Figs. 1-3 A valve seat with a pressure relief function according to an embodiment of the present invention is described. Furthermore, the present invention can also be applied to a ball valve.

[0028] like Fig. 1 As shown, according to a second aspect of the present invention, a ball valve is provided, comprising a valve seat with a pressure relief function as described in the first aspect.

[0029] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A valve seat with pressure relief function, characterized in that, Include: A valve seat support ring is provided inside an external ball valve. One side of the valve seat support ring is provided with a pressure relief hole, and the other side of the valve seat support ring is provided with a pressure relief groove, which communicates with the pressure relief hole. An adjustable pressure relief module is installed in the pressure relief groove. When the valve chamber of the ball valve reaches the set pressure value, the pressure relief groove and the pressure relief hole are connected to release pressure. When the valve chamber of the ball valve does not reach the set pressure value, the pressure relief groove and the pressure relief hole are disconnected to prevent pressure relief.

2. The valve seat with pressure relief function as described in claim 1, characterized in that, The adjustable pressure relief module includes: A locking nut, the outer surface of which is threadedly connected to the inner wall of the pressure relief groove; A steel ball, which is located within the pressure relief groove; An elastic element is located within the pressure relief groove and between the steel ball and the locking nut. An elastic force is applied to the steel ball, causing the steel ball to block the connection between the pressure relief groove and the pressure relief hole.

3. The valve seat with pressure relief function as described in claim 2, characterized in that, The elastic element is a spring.

4. The valve seat with pressure relief function as described in claim 2, characterized in that, The locking nut is an internal hexagonal nut.

5. A ball valve, characterized in that, The valve seat comprising any one of claims 1 to 4 has a pressure relief function.

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