Pressure relief valve capable of preventing air accumulation

Abstract

The utility model relates to an air accumulation prevention pressure relief valve which comprises a relief valve body, and the relief valve body comprises a functional structure and a rotating structure. And the functional structure comprises a first valve body, a piston, a movable plate, a second valve body, a functional bolt, a reset spring, a limiting ring and a rotating button, the piston is fixedly installed in the first valve body, the movable plate is fixedly installed at the top of the piston, and the second valve body is fixedly installed at the top of the first valve body. According to the air accumulation prevention pressure relief valve, through a limiting ring arranged on the surface of the top end of the second valve body and a limiting plate arranged on the outer side of a functional bolt, the functional bolt is limited through clamping of the limiting ring and the limiting plate, and through clamping of a limiting groove in the outer side of a sliding block and a limiting strip, stability of the sliding block is guaranteed; and meanwhile, the functional bolt conveniently pushes the sliding block to move along the center line of the limiting strip, so that the stability of the sliding block is conveniently guaranteed, and the stability of parts in the device is prevented from being influenced by shaking of the sliding block.

Description

Technical Field

[0001] The utility model relates to the technical field of release valves, in particular to a gas accumulation prevention pressure release valve. Background Art

[0002] The pressure relief valve is a pressure protection device for the transformer. When a fault occurs inside the transformer, the oil decomposes to produce a large amount of gas. Since the transformer is basically airtight, the connecting pipe connecting the oil pillow is relatively thin. The small connecting pipe alone cannot effectively and quickly reduce the pressure, causing the pressure in the oil tank to rise sharply, which will cause the transformer oil tank to rupture. The pressure relief valve will open in time to discharge some of the transformer oil and reduce the pressure in the oil tank. After the pressure in the oil tank is reduced, the pressure relief valve will automatically close and keep the oil tank sealed. After the transformer is filled with oil, there is a height difference between the oil level line at the base of the release valve and the diaphragm of the release valve. When the transformer is exhausted, this area is prone to air retention and cannot be completely removed. As time goes by, the retained air will be transferred to the "gas relay", which may easily cause a "gas relay light gas alarm".

[0003] There are many types of anti-gas accumulation pressure release valves on the current market. Although they can meet basic needs, the existing release valves have a small contact area between the reset spring and the top plate when in use, and the top plate is prone to shaking when the functional bolt pushes the top plate to move, thereby affecting the stability of the internal parts of the device. In addition, the device is connected through threads, which makes it easy for gas or current to leak from the thread gap, causing waste of resources and even danger. In order to avoid false alarms of light gas by the "gas relay", we proposed an anti-gas accumulation pressure release valve. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a pressure release valve with stable sealing effect and good anti-gas accumulation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-gas accumulation pressure release valve, comprising a release valve body, the release valve body comprising a functional structure and a rotating structure; the functional structure comprises a No. 1 valve body, a piston, a movable plate, a No. 2 valve body, a functional bolt, a reset spring, a limit ring and a rotating knob, the interior of the No. 1 valve body is fixedly installed with a piston, the top of the piston is fixedly installed with a movable plate, the top of the No. 1 valve body is fixedly installed with the No. 2 valve body, the top of the movable plate is located inside the No. 2 valve body and a functional bolt is fixedly installed, the outer surface of the functional bolt is movably installed with a reset spring, the inner top wall of the No. 2 valve body is located on the outer surface of the functional bolt and a limit ring is fixedly installed, and the top of the functional bolt is fixedly installed with a rotating knob extending to the outer surface of the No. 2 valve body; the rotating structure comprises a threaded opening, a slider and a sealing block, the outer surface of the functional bolt is provided with a threaded opening, the outer surface of the functional bolt is threadedly connected with a slider, and the outer surface of the functional bolt is located inside the No. 2 valve body and a sealing block is fixedly installed.

[0006] Furthermore, a limiting plate is fixedly installed inside the limiting ring, and a limiting groove is provided on the outer surface of the limiting plate, and a limiting strip is fixedly installed inside the limiting groove.

[0007] Furthermore, a conical groove adapted to the outer surface of the sealing block is opened inside the No. 2 valve body, the cross-sectional dimension of the outer wall of the slider is the same as the cross-sectional dimension of the inner wall of the No. 2 valve body, the cross-sectional dimension of the limit groove is the same as the cross-sectional dimension of the limit strip, and the slider and the limit strip are slidably connected.

[0008] Furthermore, a placement groove is provided inside the limiting ring, and a sealing ring is fixedly installed inside the placement groove.

[0009] Furthermore, the longitudinal section of the limiting ring is L-shaped, the height of the inner side of the limiting ring is the same as the thickness of the limiting plate, and the limiting plate and the limiting ring are slidably connected.

[0010] Furthermore, an anti-slip groove is provided on the outer wall of the knob, a chamfer is provided on the edge of the knob, the longitudinal section of the sealing block is trapezoidal, and the cross-sectional dimensions of the sealing block are the same as the cross-sectional shape of the tapered groove.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0012] The anti-gas accumulation pressure release valve uses a limit ring arranged on the top surface of the No. 2 valve body and a limit plate arranged on the outside of the functional bolt to limit the functional bolt through the engagement of the limit ring and the limit plate, and the engagement of the limit groove on the outside of the slider with the limit strip ensures the stability of the slider, and at the same time facilitates the functional bolt to push the slider to move along the center line of the limit strip, thereby ensuring the stability of the slider and preventing the shaking of the slider from affecting the stability of the internal parts of the device, and then through the sealing block installed on the outside of the functional bolt and the conical groove opened on the inside of the No. 2 valve body, the sealing of the device is ensured through the cooperation of the sealing block and the conical groove, and the sealing of the device is further ensured by the placement groove opened on the outer wall and bottom wall of the limit plate and the rubber ring arranged on the inside of the placement groove, thereby preventing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a functional structural cross-sectional view of the structure of the utility model;

[0015] Figure 3 It is a front cross-sectional view of the rotating structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the rotating structure part of the utility model structure.

[0017] In the figure: 1. release valve body; 2. functional structure; 201. valve body No. 1; 202. piston; 203. movable plate; 204. valve body No. 2; 205. functional bolt; 206. return spring; 207. limit ring; 208. knob; 3. rotating structure; 301. threaded port; 302. slider; 303. sealing block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4In this embodiment, a pressure relief valve for preventing gas accumulation includes a relief valve body 1, wherein the relief valve body 1 includes a functional structure 2 and a rotating structure 3; the functional structure 2 includes a No. 1 valve body 201, a piston 202, a movable plate 203, a No. 2 valve body 204, a functional bolt 205, a return spring 206, a limit ring 207 and a knob 208, wherein the No. 1 valve body 201 is fixedly installed with a piston 202, the top of the piston 202 is fixedly installed with a movable plate 203, and the top of the No. 1 valve body 201 is fixedly installed with a No. 2 valve body 204. 04, the top of the movable plate 203 is located inside the second valve body 204 and is fixedly installed with a functional bolt 205, the outer surface of the functional bolt 205 is movably installed with a return spring 206, the inner top wall of the second valve body 204 is located on the outer surface of the functional bolt 205 and is fixedly installed with a limit ring 207, and the top of the functional bolt 205 is fixedly installed with a knob 208 extending to the outer surface of the second valve body 204; the rotating structure 3 includes a threaded opening 301, a slider 302 and a sealing block 303, and the outer surface of the functional bolt 205 is provided with a threaded opening 301, the outer surface of the functional bolt 205 is threadedly connected with a slider 302, and the outer surface of the functional bolt 205 is located inside the second valve body 204 and fixedly installed with a sealing block 303; through the limiting ring 207 arranged on the top surface of the second valve body 204 and the limiting plate arranged on the outer side of the functional bolt 205, the functional bolt 205 is limited by the engagement of the limiting ring 207 and the limiting plate, and the stability of the slider 302 is ensured by the engagement of the limiting groove on the outer side of the slider 302 with the limiting strip, and at the same time, the functional bolt 205 is convenient to push The movable slider 302 moves along the center line of the limit bar, thereby ensuring the stability of the slider 302 and preventing the shaking of the slider 302 from affecting the stability of the internal parts of the device. Then, the sealing block 303 installed on the outside of the functional bolt 205 and the conical groove opened on the inner side of the No. 2 valve body 204 are used. The sealing of the device is ensured by the cooperation between the sealing block 303 and the conical groove. The placement groove opened on the outer wall and bottom wall of the limit plate and the rubber ring arranged on the inner side of the placement groove further ensures the sealing of the device, thereby preventing leakage.

[0020] exist Figure 2 In the embodiment, by providing the limiting groove and the limiting strip, the slider 302 can be limited, so that the slider 302 can be more stable when moving, thereby ensuring the stability of the slider 302.

[0021] exist Figure 2 In the embodiment, rubber rings are provided in the placement grooves on the outer wall and the bottom wall of the limiting plate, and rubber rings are also provided on the inner side of the placement grooves, so that the sealing performance can be improved by the rubber rings, and the sealing performance of the device is further ensured.

[0022] exist Figure 2In the embodiment, a conical groove is provided, and the inner wall of the conical groove is matched with the outer surface of the sealing block 303, so that they can cooperate with each other, enhance the sealing effect, and make the sealing performance higher.

[0023] exist Figure 2 In the embodiment, by providing an anti-skid groove on the outer surface of the knob 208, a more stable effect can be achieved when the knob 208 is rotated without slipping.

[0024] To summarize, the anti-gas accumulation pressure release valve, through the limit ring 207 arranged on the top surface of the No. 2 valve body 204 and the limit plate arranged on the outside of the functional bolt 205, limits the functional bolt 205 through the engagement of the limit ring 207 and the limit plate, and ensures the stability of the slider 302 through the engagement of the limit groove on the outside of the slider 302 and the limit bar, and at the same time facilitates the functional bolt 205 to push the slider 302 to move along the center line of the limit bar, thereby facilitating the stability of the slider 302 and preventing the shaking of the slider 302 from affecting the stability of the internal parts of the device, and then through the sealing block 303 installed on the outside of the functional bolt 205 and the conical groove opened on the inner side of the No. 2 valve body 204, the sealing of the device is ensured through the cooperation of the sealing block 303 and the conical groove, and the sealing of the device is further ensured through the placement groove opened on the outer wall and bottom wall of the limit plate and the rubber ring arranged on the inner side of the placement groove, thereby preventing leakage.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure relief valve for preventing gas accumulation, comprising a relief valve body (1), characterized in that: The release valve body (1) comprises a functional structure (2) and a rotating structure (3); The functional structure (2) comprises a No. 1 valve body (201), a piston (202), a movable plate (203), a No. 2 valve body (204), a functional bolt (205), a return spring (206), a limit ring (207) and a rotary knob (208); the interior of the No. 1 valve body (201) is fixedly mounted with the piston (202); the top of the piston (202) is fixedly mounted with the movable plate (203); the top of the No. 1 valve body (201) is fixedly mounted with the No. 2 valve body (204); 204), the top of the movable plate (203) is located inside the No. 2 valve body (204) and is fixedly installed with a functional bolt (205), the outer surface of the functional bolt (205) is movably installed with a return spring (206), the inner top wall of the No. 2 valve body (204) is located on the outer surface of the functional bolt (205) and is fixedly installed with a limit ring (207), and the top of the functional bolt (205) is fixedly installed with a knob (208) extending to the outer surface of the No. 2 valve body (204); The rotating structure (3) comprises a threaded opening (301), a slider (302) and a sealing block (303); the outer surface of the functional bolt (205) is provided with a threaded opening (301); the outer surface of the functional bolt (205) is threadedly connected with the slider (302); the outer surface of the functional bolt (205) is located inside the No. 2 valve body (204) and is fixedly mounted with a sealing block (303).

2. The anti-gas accumulation pressure relief valve according to claim 1, characterized in that: A limiting plate is fixedly installed inside the limiting ring (207), a limiting groove is provided on the outer surface of the limiting plate, and a limiting strip is fixedly installed inside the limiting groove.

3. The anti-gas accumulation pressure relief valve according to claim 2, characterized in that: The interior of the No. 2 valve body (204) is provided with a conical groove adapted to the outer surface of the sealing block (303); the cross-sectional dimensions of the outer wall of the slider (302) are the same as the cross-sectional dimensions of the inner wall of the No. 2 valve body (204); the cross-sectional dimensions of the limit groove are the same as the cross-sectional dimensions of the limit strip; the slider (302) is slidably connected to the limit strip.

4. The anti-gas accumulation pressure relief valve according to claim 1, characterized in that: A placement groove is provided inside the limiting ring (207), and a sealing ring is fixedly installed inside the placement groove.

5. The anti-gas accumulation pressure release valve according to claim 1, characterized in that: The longitudinal cross-section of the limiting ring (207) is L-shaped, the height of the inner side of the limiting ring (207) is the same as the thickness of the limiting plate, and the limiting plate and the limiting ring (207) are slidably connected.

6. The anti-gas accumulation pressure release valve according to claim 3, characterized in that: The outer wall of the knob (208) is provided with an anti-slip groove, the edge of the knob (208) is provided with a chamfer, the longitudinal section of the sealing block (303) is trapezoidal, and the cross-sectional dimensions of the sealing block (303) are the same as the cross-sectional shape of the tapered groove.

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