Pressure relief valve with locking and rain protection function

Abstract

The application discloses a pressure release valve with locking and rainproof functions, which comprises a valve seat, the outer wall of the top end of the valve seat is tightly combined with a membrane disc, the top end of the membrane disc is fixedly connected with a marker rod, the top end of the marker rod is fixedly connected with a rainproof cap, the outer wall top end of the marker rod is threadedly connected with a locking rivet, the outer side of the locking rivet is fixedly connected with a valve cover, and the outer wall of the valve cover is connected with a guide column penetratingly in the up-down direction. The pressure release valve with locking and rainproof functions has the special locking function, the locking structure is simpler than the existing structure, the locking function is more stable, the pressure release valve with the rainproof function and the special action alarm mark can greatly improve the stability of the release valve during operation, namely, the distinctness of the alarm mark after the action of the release valve is ensured, meanwhile, the rainproof property of the release valve is ensured, and the reliability of the release valve is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of pressure relief valve technology, specifically a pressure relief valve with locking and rainproof functions. Background Technology

[0002] Traditional pressure relief valves have a rudimentary locking function, weak rain protection, and unclear operation indicators. When transporting pressure relief valves, they need to be properly locked. However, the traditional locking structure is not stable enough. When the relief valve is installed on a transformer, if an unknown pressure is generated inside the transformer or the transformer's airflow is obstructed, the pressure inside the transformer tank may exceed the sealing pressure value of the relief valve. This will cause the relief valve indicator rod and rain cap to activate, preventing the rain cap from providing complete waterproofing. Furthermore, the operation warning indicator is not clear enough. Summary of the Invention

[0003] The purpose of this invention is to provide a pressure relief valve with locking and rainproof functions to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a pressure relief valve with locking and rainproof functions, comprising a valve seat, a diaphragm disc tightly fitted to the outer wall of the top of the valve seat, a marker rod fixedly connected to the top of the diaphragm disc, a rainproof cap fixedly connected to the top of the marker rod, a locking rivet threadedly connected to the top of the outer wall of the marker rod, a valve cover fixedly connected to the outer side of the locking rivet, a guide post penetrating through the outer wall of the valve cover in the vertical direction, the bottom end of the guide post threadedly connected to the inner cavity of the valve seat, a bushing fixedly connected to the outer wall of the center position of the marker rod, a tension spring cover fixedly connected to the outer wall of the bushing, the guide post penetrating through the tension spring cover, a spring fixedly connected to the bottom end of the tension spring cover, and the bottom end of the spring fixedly connected to the top of the diaphragm disc.

[0005] Preferably, the valve seat has a weight-reducing groove in its inner cavity.

[0006] Preferably, the diaphragm disc has a U-shaped cross-section and wraps around the top of the valve seat.

[0007] Preferably, the top outer wall of the signpost is threaded.

[0008] Preferably, the cross-section of the rain cap is U-shaped.

[0009] Preferably, the locking rivet has a threaded hole in its inner cavity that is compatible with the marker rod.

[0010] Preferably, the number of guide posts is four, and they are evenly distributed around the valve cover.

[0011] Preferably, the outer wall of the valve cover is provided with an oil injection port.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the pressure relief valve with locking and rainproof functions, the pressure relief valve with special locking function, the locking structure is simpler than the existing structure, the locking function is more stable, and the pressure relief valve with rainproof function and special action alarm mark can greatly improve the stability of the relief valve during operation, that is, ensure the prominence of the alarm mark after the relief valve is activated, and at the same time ensure the rainproofness of the relief valve, thus greatly improving the reliability of the relief valve. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention; Figure 2 This is a front cross-sectional view of the present invention; Figure 3 This is the front view of the present invention.

[0014] In the diagram: 1. Valve seat, 2. Diaphragm, 3. Marker rod, 4. Rain cap, 5. Locking rivet, 6. Valve cover, 7. Tension spring cover, 8. Bushing, 9. Guide post, 10. Spring, 11. Weight reduction groove. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figure 1-3This invention provides a technical solution: a pressure relief valve with locking and rainproof functions, including a valve seat 1. The inner cavity of the valve seat 1 has a weight-reducing groove 11, which facilitates weight reduction of the overall device and saves materials. A diaphragm 2 is tightly fitted to the outer wall of the top of the valve seat 1. The diaphragm 2 has a U-shaped cross-section and wraps around the top of the valve seat 1. A marker rod 3 is fixedly connected to the top of the diaphragm 2. A rain cap 4, also U-shaped in cross-section, is fixedly connected to the top of the marker rod 3, providing rain protection for the device's interior. The outer wall of the top of the marker rod 3 has threads. A locking rivet 5 is threadedly connected. The inner cavity of the locking rivet 5 has a threaded hole that matches the marker rod 3. A valve cover 6 is fixedly connected to the outer side of the locking rivet 5. An oil injection port is opened on the outer wall of the valve cover 6. Four guide posts 9 are connected through the outer wall of the valve cover 6 in the vertical direction. The guide posts 9 are evenly distributed around the valve cover 6. The bottom end of the guide post 9 is threadedly connected to the inner cavity of the valve seat 1. A bushing 8 is fixedly connected to the outer wall of the center position of the marker rod 3. A tension spring cover 7 is fixedly connected to the outer wall of the bushing 8. The guide post 9 passes through the tension spring cover 7. A spring 10 is fixedly connected to the bottom end of the tension spring cover 7. The bottom end of the spring 10 is fixedly connected to the top end of the diaphragm 2.

[0017] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0018] The pressure relief valve has a locking and rainproof function. A threaded sleeve is added to the indicator rod 3. The valve cover 6 and the indicator rod 3 are indirectly connected by threads to form a locking. When locking is required, it can be rotated. The rainproof cap 4 and the indicator rod 3 can be integrally formed. The rainproof cap 4 is enlarged. When the pressure rises slowly, the pressure reaches the opening pressure of the pressure relief valve. The relief valve is activated. The indicator rod 3 and the rainproof cap 4 lift the rainproof cap 4 to form a rainproof function inside the pressure relief valve.

[0019] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," 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 invention 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. At the same time, unless otherwise explicitly specified and limited, the terms "clamp-in," "shaft-in," "plug-in," "welding," and "screw-in," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure relief valve with locking and rainproof functions, comprising a valve seat (1), characterized in that: The valve seat (1) has a diaphragm disc (2) tightly attached to its top outer wall. A marker rod (3) is fixedly connected to the top of the diaphragm disc (2). A rain cap (4) is fixedly connected to the top of the marker rod (3). A locking rivet (5) is threaded to the top of the outer wall of the marker rod (3). A valve cover (6) is fixedly connected to the outside of the locking rivet (5). A guide post (9) is threaded through the outer wall of the valve cover (6) in the vertical direction. The bottom end of the guide post (9) is threaded to the inner cavity of the valve seat (1). A bushing (8) is fixedly connected to the outer wall of the center position of the marker rod (3). A tension spring cover (7) is fixedly connected to the outer wall of the bushing (8). The guide post (9) passes through the tension spring cover (7). A spring (10) is fixedly connected to the bottom end of the tension spring cover (7). The bottom end of the spring (10) is fixedly connected to the top of the diaphragm disc (2).

2. A pressure relief valve with locking and rainproof functions according to claim 1, characterized in that: The valve seat (1) has a weight-reducing groove (11) in its inner cavity.

3. A pressure relief valve with locking and rainproof functions according to claim 1, characterized in that: The diaphragm (2) has a U-shaped cross-section and is wrapped around the top of the valve seat (1).

4. A pressure relief valve with locking and rainproof functions according to claim 1, characterized in that: The top outer wall of the signpost (3) is threaded.

5. A pressure relief valve with locking and rainproof functions according to claim 1, characterized in that: The cross-section of the rain cap (4) is U-shaped.

6. A pressure relief valve with locking and rainproof functions according to claim 1, characterized in that: The locking rivet (5) has a threaded hole in its inner cavity that is compatible with the marker rod (3).

7. A pressure relief valve with locking and rainproof functions according to claim 1, characterized in that: The number of guide posts (9) is four, and they are evenly distributed around the valve cover (6).

8. A pressure relief valve with locking and rainproof functions according to claim 1, characterized in that: The outer wall of the valve cover (6) is provided with an oil injection port.

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