A hydraulic system isolation valve manual / automatic switching valve protection device

Abstract

This utility model discloses a protection device for a manual / automatic switching valve of a hydraulic system isolation valve. It includes a protection device body covering the switching valve. Each side wall of the protection device body includes a first limiting side wall that contacts the side wall of the switching valve and a second limiting side wall that contacts the top of the switching valve. A clearance cavity is also formed within the protection device body between the second limiting side walls to accommodate the switching valve handle. Each second limiting side wall has a locking hole for the switching valve handle to pass through, and each locking hole communicates with the clearance cavity. This utility model is applicable to manual / automatic switching valves of hydraulic system isolation valves. It requires no operation or modification of the valve, and the device does not affect the normal operation of the hydraulic system and the switching valve during installation. It can lock the switching valve in both open and closed positions, effectively preventing changes in the switching valve's state due to accidental contact.

Description

Technical Field

[0001] This utility model belongs to the field of manual and automatic valve technology, and in particular relates to a protection device for manual / automatic switching valve of hydraulic system isolation valve. Background Technology

[0002] In the hydraulic system of a hydropower station, the manual / automatic switching valve of the isolation valve is integrated on the valve body of the isolation valve. The status of the manual / automatic switching valve is directly related to the start-up process, equipment safety and personnel safety. During routine maintenance or inspection, there is a possibility that the staff may accidentally touch the manual / automatic switching valve handle, which may cause the hydraulic system to lose pressure. In severe cases, it may even cause the unit to shut down due to an accident. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the prior art and provide a protection device for the manual / automatic switching valve of the hydraulic system isolation valve. It is applicable to the manual / automatic switching valve of the hydraulic system isolation valve, without the need for valve operation or modification. Moreover, the device does not affect the normal operation of the hydraulic system and the switching valve during installation. It can lock the switching valve in the open and closed positions, effectively preventing the state of the switching valve from changing due to accidental contact.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A hydraulic system isolation valve manual / automatic switching valve protection device includes a protection device body covering the switching valve. Each side wall of the protection device body includes a first limiting side wall that contacts the side wall of the switching valve and a second limiting side wall that contacts the top of the switching valve. The protection device body also has a relief cavity located between the second limiting side walls for accommodating the switching valve handle. Each second limiting side wall has a locking hole for the switching valve handle to pass through, and each locking hole communicates with the relief cavity.

[0006] In this embodiment, the protective device body is mounted on the switching valve from top to bottom. The first and second limiting sidewalls on each sidewall ensure that the protective device body does not shift when mounted on the switching valve. At the same time, the clearance cavity inside the protective device body prevents the protective device body from interfering with the switching valve handle when mounted on the switching valve. That is, the protective device body does not affect the normal operation of the hydraulic system and the switching valve during installation. In addition, the locking hole on each second limiting sidewall, which communicates with the clearance cavity, allows the switching valve handle to pass through. That is, regardless of whether the switching valve is in the open or closed state, the handle can be locked by mounting the protective device body on the switching valve in any direction. This facilitates installation and also prevents the switching valve from being accidentally touched and affecting the system operation. When it is necessary to change the state of the switching valve, the protective device body can be removed from bottom to top. That is, the installation and removal of the protective device body do not require operation or modification of the valve, and do not affect the normal operation of the system and the switching valve.

[0007] In one embodiment, a limiting cavity corresponding to the size of the switching valve is provided at one end of the protection device body to form the first limiting sidewall and the second limiting sidewall.

[0008] In one embodiment, the clearance cavity has a cylindrical structure.

[0009] In one embodiment, the clearance cavity is connected to the limiting cavity located at one end of the protective device body.

[0010] In one embodiment, the width of the locking hole is the same as the width of the switching valve handle.

[0011] In one embodiment, a through screw positioning groove is also provided between two adjacent second limiting sidewalls.

[0012] In one embodiment, the clearance cavity is in communication with the surface of the other end of the protective device body.

[0013] In one embodiment, each of the first limiting sidewalls is further provided with a hexagonal plug clearance groove.

[0014] In one embodiment, the hexagonal plug clearance grooves on the same sidewall are all connected to the locking hole.

[0015] The beneficial effects of this utility model are as follows:

[0016] The first and second limiting sidewalls on each side wall of the protective device body ensure that the protective device body fits snugly against the switching valve without displacement when it is placed on top of the valve. Simultaneously, the clearance cavity within the protective device body prevents interference between the protective device body and the switching valve handle when placed on top of the valve, ensuring a fully fitted and limited contact between the protective device body and the switching valve. Furthermore, the locking hole on each second limiting sidewall, communicating with the clearance cavity, allows the switching valve handle to pass through. This means that regardless of whether the switching valve is open or closed, the handle can be locked by placing the protective device body on the valve in any direction. This facilitates installation and prevents accidental contact with the switching valve from affecting system operation. When the switching valve's state needs to be changed, the protective device body can be removed from bottom to top. Therefore, the installation and removal of the protective device body requires no operation or modification of the valve and does not affect the normal operation of the system or the switching valve. Attached Figure Description

[0017] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings. Wherein:

[0018] Figure 1 A schematic diagram of the structure of this utility model is shown;

[0019] Figure 2 This diagram shows the structure of the present invention in its working state;

[0020] Figure 3 This diagram shows the structure of the present invention installed on a manual / automatic switching valve;

[0021] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0022] Figure label:

[0023] 100-Protective device body, 1-Side wall, 2-Allowing cavity, 3-Locking hole, 4-Screw positioning groove, 5-Hexagonal plug clearance groove, 101-First limiting side wall, 102-Second limiting side wall. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] This utility model provides a protection device for the manual / automatic switching valve of a hydraulic system isolation valve, such as... Figures 1 to 3As shown, the device includes a protective device body 100 that covers the switching valve. Each side wall 1 of the protective device body 100 includes a first limiting side wall 101 that contacts the side wall of the switching valve and a second limiting side wall 102 that contacts the top of the switching valve. The protective device body 100 also has a relief cavity 2 located between the second limiting side walls 102. The relief cavity 2 is used to accommodate the switching valve handle. Each second limiting side wall 102 has a locking hole 3 for the switching valve handle to pass through. Each locking hole 3 is connected to the relief cavity 2.

[0026] Specifically, such as Figure 1 and Figure 3 As shown, one end of the protection device body 100 is provided with a limiting cavity corresponding to the size of the switching valve, so as to form a first limiting sidewall 101 and a second limiting sidewall 102, and the width of the locking hole 3 is consistent with the width of the switching valve handle.

[0027] It should be noted that, in this embodiment, as Figure 1 and Figure 2 As shown, the first limiting sidewall 101 and the second limiting sidewall 102 on each sidewall 1 of the protection device body 100 ensure that the protection device body 100 fits snugly against the switching valve without displacement when it is covered. At the same time, the clearance cavity 2 inside the protection device body 100 prevents the protection device body 100 from interfering with the switching valve handle when it is covered. This ensures that the protection device body 100 and the switching valve are fully limited and fitted. Meanwhile, the locking hole 3 on each second limiting sidewall 102, which communicates with the clearance cavity 2, allows the switching valve handle to pass through. That is, regardless of whether the switching valve is in the open or closed state, the handle can be locked by covering the switching valve with the protection device body 100 in any direction. This facilitates installation and also prevents the switching valve from being accidentally touched, which could affect the operation of the system. When it is necessary to change the state of the switching valve, the protection device body 100 can be removed from bottom to top. That is, the installation and removal of the protection device body 100 do not require operation or modification of the valve, and do not affect the normal operation of the system and the switching valve.

[0028] Furthermore, such as Figure 1 As shown, the clearance cavity 2 has a cylindrical structure. The clearance cavity 2 is connected to the limiting cavity located at one end of the protection device body 100, and the clearance cavity 2 is connected to the surface of the other end of the protection device body 100. This facilitates processing and reduces the weight of the protection device body 100. At the same time, it allows the user to observe the status of the connection between the switching valve handle and the manual / automatic switching valve located in the clearance cavity 2 from top to bottom.

[0029] In one embodiment, such as Figure 1 and Figure 3As shown, a through screw positioning groove 4 is also provided between two adjacent second limiting sidewalls 102, that is, a screw positioning groove 4 is provided at the corner between two adjacent second limiting sidewalls 102, so that the bolt on the switching valve handle can be connected to the switching valve handle through the screw positioning groove 4 between the first limiting sidewall 101 and the second limiting sidewall 102, so as to avoid interference with the protection device body 100, that is, to avoid affecting the installation of the protection device body 100 and its effect of covering the manual / automatic switching valve.

[0030] In one embodiment, such as Figure 1 and Figure 3 As shown, each first limiting sidewall 101 is also provided with a hexagonal plug clearance groove 5. The hexagonal plug clearance groove 5 on the same sidewall is connected to the locking hole 3. That is, the hexagonal plug clearance groove 5 provided on the first limiting sidewall 101 can avoid the hexagonal plug structure on the sidewall of the switching valve handle during the installation of the protection device body 100, so as to avoid affecting the installation of the protection device body 100 and its effect of covering the manual and automatic switching valve.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A protection device for a manual / automatic switching valve of a hydraulic system isolation valve, characterized in that, The device includes a protective device body that covers the switching valve. Each side wall of the protective device body includes a first limiting side wall that contacts the side wall of the switching valve and a second limiting side wall that contacts the top of the switching valve. The protective device body also has a clearance cavity located between the second limiting side walls. The clearance cavity is used to accommodate the switching valve handle. Each second limiting side wall has a locking hole for the switching valve handle to pass through. Each locking hole communicates with the clearance cavity.

2. The hydraulic system isolation valve manual / automatic switching valve protection device according to claim 1, characterized in that, One end of the protective device body is provided with a limiting cavity corresponding to the size of the switching valve, so as to form the first limiting sidewall and the second limiting sidewall.

3. The hydraulic system isolation valve manual / automatic switching valve protection device according to claim 1, characterized in that, The avoidance cavity has a cylindrical structure.

4. A hydraulic system isolation valve manual / automatic switching valve protection device according to claim 2, characterized in that, The clearance cavity is connected to the limiting cavity located at one end of the protective device body.

5. A hydraulic system isolation valve manual / automatic switching valve protection device according to claim 1, characterized in that, The width of the locking hole is the same as the width of the switching valve handle.

6. A hydraulic system isolation valve manual / automatic switching valve protection device according to claim 1, characterized in that, A through screw positioning groove is also provided between two adjacent second limiting sidewalls.

7. A hydraulic system isolation valve manual / automatic switching valve protection device according to claim 4, characterized in that, The clearance cavity is connected to the surface of the other end of the protective device body.

8. A hydraulic system isolation valve manual / automatic switching valve protection device according to claim 1, characterized in that, Each of the first limiting sidewalls is also provided with a hexagonal plug clearance groove.

9. A hydraulic system isolation valve manual / automatic switching valve protection device according to claim 8, characterized in that, The hexagonal plug clearance grooves on the same side wall are all connected to the locking holes.

Images