Invisible explosion venting valve and inverter comprising same

Abstract

The hidden explosion venting valve comprises a sealing ring and a valve body, and further comprises a sinking table, the sinking table is arranged on a shell and sinks below the shell, an inner threaded hole is formed in the sinking table, the valve body is composed of a valve column and a threaded ring part fixedly installed on the outer side of the valve column, thread teeth are arranged on the threaded ring part, and the inner threaded hole is formed in the valve column. The threaded ring part is screwed into the inner threaded hole through threaded teeth, a plurality of ring notches are formed in the threaded teeth, an inner convex ring blocking part is fixed to the bottom in the inner threaded hole, and a sealing ring is arranged on the portion, between the inner convex ring blocking part and the threaded ring part, of the valve rod in a sleeving mode; an explosion venting thin-wall face is arranged between the bottom groove and the top groove of the valve column in a spaced mode. The invisible explosion venting valve and the inverter comprising the same have double explosion venting ways of thread tooth failure pressure relief and thin-wall failure pressure relief, are more guaranteed, and are simple in overall structure, space-saving, simple to produce and process and low in cost; in addition, the valve body adopts an external thread form, an internal explosion venting channel is large, and the explosion venting capacity is high.

Description

Technical Field

[0001] The utility model relates to the field of new energy, in particular to an invisible explosion relief valve and an inverter containing the same. Background Art

[0002] In the field of new energy, electronic devices such as photovoltaic inverters and energy storage inverters have more resistors and capacitors on their circuit boards due to functional requirements, and are larger in size. When these electronic devices fail, explosions often occur. In order to avoid casualties and property losses, explosion relief valves are needed to release the air pressure generated by the explosion. In the prior art, the explosion relief valve is locked outside the shell by threads, which will damage the appearance of the product and is easily damaged by accidental touch. At the same time, its structure is also more complicated, the price is higher, and sometimes the function is not stable enough and the reliability is poor. Utility Model Content

[0003] The purpose of the utility model is to provide an invisible explosion relief valve and an inverter containing the same in order to solve the above-mentioned problem.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A stealth explosion-relief valve comprises a sealing ring, a valve body, and a sinker, wherein the sinker is arranged on a shell body and sunk below the shell body, an internal threaded hole is arranged on the sinker, the valve body consists of a valve column and a threaded ring portion fixedly installed on the outer side of the valve column, the threaded ring portion is provided with thread teeth, the threaded ring portion is screwed into the internal threaded hole through the thread teeth, a plurality of ring notches are arranged on the thread teeth, an inner convex ring stop portion is fixed to the bottom of the internal threaded hole, the sealing ring is sleeved on the valve column between the inner convex ring stop portion and the threaded ring portion; a thin explosion-relief wall surface is arranged between the bottom groove and the top groove of the valve column.

[0006] Furthermore, an annular groove portion is provided on the valve column below the threaded ring portion, and the sealing ring is sleeved into the annular groove portion.

[0007] Furthermore, a six-sided annular convex portion is provided on the valve column above the threaded ring portion.

[0008] Furthermore, a valve cover is provided on the top surface of the valve column.

[0009] Furthermore, the top of the valve cover is flush with the upper surface of the shell.

[0010] Furthermore, the shell body is provided with a shell hole, and the sink is fixedly installed at the bottom hole edge of the shell hole.

[0011] Furthermore, there are multiple ring gaps.

[0012] Furthermore, a plurality of the ring gaps are evenly distributed on the thread teeth.

[0013] The utility model also discloses an inverter, comprising the aforementioned invisible explosion relief valve.

[0014] Furthermore, the inverter is any one of a photovoltaic inverter, an energy storage inverter, and a photovoltaic storage inverter. The beneficial effects of the utility model are:

[0015] 1. Dual explosion relief methods, namely, thread failure pressure relief and thin wall failure pressure relief, provide greater assurance;

[0016] 2. The overall structure is simple, the production and processing are simple, the cost is low, and the processing methods are flexible and diverse. Small quantities can be produced by machining, and large quantities can be processed by injection molding;

[0017] 3. Adopt invisible design, installed on the shell, saving space and not affecting the external structure of the shell;

[0018] 4. It is equipped with an external hexagonal head (six-sided convex part), which can bear large torque and is easy to assemble and maintain;

[0019] 5. The valve body adopts the form of external thread, with a large internal explosion relief channel and strong explosion relief capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the explosion structure of an invisible explosion relief valve described in the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of an invisible explosion relief valve described in the utility model;

[0022] Figure 3 The valve body structure of the invisible explosion relief valve described in the utility model Figure 1 ;

[0023] Figure 4 The valve body structure of the invisible explosion relief valve described in the utility model Figure 2 ;

[0024] Figure 5 It is a diagram of the internal structure of a sinker of an invisible explosion relief valve described in the utility model.

[0025] The following are the descriptions of the reference numerals:

[0026] 1. Shell; 2. Sealing ring; 3. Valve body; 31. Valve column; 32. Threaded ring; 321. Threaded teeth; 33. Six-sided convex ring; 34. Ring groove; 35. Bottom groove; 36. Top groove; 37. Ring notch; 38. Explosion venting thin wall; 4. Valve cover; 5. Shell hole; 6. Sink; 61. Internal threaded hole; 62. Internal convex ring retaining part. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] like Figure 1 - Figure 5 As shown, an invisible explosion relief valve comprises a sealing ring 2, a valve body 3 and a sink 6;

[0029] An internal threaded hole 61 is provided on the sink 6, and the valve body 3 is composed of a valve column 31 and a threaded ring portion 32 fixedly installed on the outside of the valve column 31. The threaded ring portion 32 is provided with a threaded tooth 321, and the threaded ring portion 32 is screwed into the internal threaded hole 61 through the threaded tooth 321. A plurality of ring notches 37 are provided on the threaded tooth 321, which are used to reduce the contact surface of the threaded tooth 321. When the explosion is vented, the threaded tooth 321 fails to protect the overall product; the product can be an inverter, such as a photovoltaic inverter, an energy storage inverter, a photovoltaic storage inverter, etc.

[0030] The number of the ring gaps 37 can be one or more. In one embodiment, there are multiple ring gaps 37, and the multiple ring gaps 37 are evenly distributed on the thread teeth 321 of the threaded ring portion 32; in another embodiment, there are multiple ring gaps 37, and the multiple ring gaps 37 are unevenly distributed on the thread teeth 321 of the threaded ring portion 32.

[0031] An inner convex ring stop 62 is fixed to the bottom of the inner threaded hole 61 , and a sealing ring 2 is sleeved on the valve column 31 between the inner convex ring stop 62 and the threaded ring portion 32 to increase the sealing performance of the valve body 3 in the inner threaded hole 61 .

[0032] like Figure 1 - Figure 5 As shown, the utility model also discloses the following more optimized specific structures:

[0033] An annular groove 34 is provided on the valve column 31 below the threaded ring portion 32, and the sealing ring 2 is sleeved into the annular groove 34 to improve its stability.

[0034] A six-sided annular protrusion 33 is provided on the valve column 31 above the threaded ring portion 32 , and the six-sided annular protrusion 33 is convenient for rotation using a hexagon socket tool.

[0035] A bottom groove 35 is provided at the bottom of the valve column 31 , a top groove 36 is provided at the top of the valve column 31 , and an explosion-proof thin wall surface 38 is provided between the bottom groove 35 and the top groove 36 .

[0036] The top surface of the valve column 31 is provided with a valve cover 4, which can prevent dust and dirt, and also prevent obstacles from falling into and damaging the explosion relief thin wall surface 38, thereby making the invisible explosion relief valve unusable.

[0037] The sinking platform 6 is arranged on the shell 1. Specifically, the shell 1 is provided with a shell hole 5, and the sinking platform 6 is fixedly installed at the bottom hole edge of the shell hole 5; the sinking platform 6 is sunk below the shell 1 (or the sinking platform 6 is sunk inside the shell 1), so it is called a sinking platform. This structural design avoids external interference and avoids explosion relief valve failure caused by accidental touch.

[0038] The utility model also discloses an inverter, including the invisible explosion relief valve. In one embodiment, the inverter is a photovoltaic inverter, an energy storage inverter, a photovoltaic storage inverter, etc. It can be understood that the housing 1 is the housing of the inverter.

[0039] Understandably, if Figure 1 - Figure 5 The invisible explosion relief valve shown can be applied to the inverter mentioned above, and can also be applied to power electronic equipment such as cabinets and battery packs, and the housing 1 is the housing of these power electronic equipment. The housing 1 can be processed by sheet metal processing, plastic injection molding or die casting, and a sink 6 is formed on the housing 1 by riveting, welding or injection molding, and the sink 6 is formed with an inner wall thread (internal thread) by inlaying or machining.

[0040] The valve body 3 can be made of metal or plastic, etc. There are multiple beneficial features on the valve body 3. For example, the six-sided annular protrusion 33 can be installed using an Allen wrench during installation, and the notch feature of the ring notch 37 can reduce the contact surface of the thread. When the thread 321 fails during explosion relief, the valve body 3 will fly out, thereby protecting the entire product; the explosion relief thin wall surface 38 will be damaged during explosion relief to release pressure and protect the entire product; the valve cover 4 can be made of hard materials such as plastic, or soft materials such as silicone, rubber, etc. The top of the valve cover 4 is flush with or slightly lower than the upper surface (outer surface) of the shell 1, and the color of the valve cover 4 can be the same as that of the shell 1, so that the valve can be installed at any position of the product without destroying the consistency of the appearance.

[0041] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. An invisible explosion relief valve, comprising a sealing ring and a valve body, characterized in that: It also includes a sinker, which is arranged on the shell and sunk below the shell. The sinker is provided with an internal threaded hole. The valve body is composed of a valve column and a threaded ring portion fixedly installed on the outside of the valve column. The threaded ring portion is provided with threaded teeth. The threaded ring portion is screwed into the internal threaded hole through the threaded teeth. A plurality of ring notches are provided on the threaded teeth. An inner convex ring stop is fixed to the bottom of the internal threaded hole. The sealing ring is sleeved on the valve column between the inner convex ring stop and the threaded ring portion; a thin explosion-proof wall surface is provided between the bottom groove and the top groove of the valve column.

2. The invisible explosion relief valve according to claim 1, characterized in that: An annular groove is provided on the valve column below the threaded ring portion, and the sealing ring is sleeved in the annular groove.

3. The invisible explosion relief valve according to claim 1, characterized in that: A six-sided annular convex portion is provided on the valve column above the threaded ring portion.

4. The invisible explosion relief valve according to claim 1, characterized in that: The top surface of the valve column is covered with a valve cover.

5. The invisible explosion relief valve according to claim 4, characterized in that: The top of the valve cover is flush with the upper surface of the housing.

6. The invisible explosion relief valve according to claim 1, characterized in that: The shell body is provided with a shell hole, and the sink is fixedly installed at the bottom hole edge of the shell hole.

7. The invisible explosion relief valve according to claim 1, characterized in that: The number of the ring gaps is multiple.

8. The invisible explosion relief valve according to claim 7, characterized in that: A plurality of the ring gaps are evenly distributed on the thread teeth.

9. An inverter, characterized in that: Including the invisible explosion relief valve as described in any one of claims 1-8.

10. An inverter according to claim 9, characterized in that: The inverter is any one of a photovoltaic inverter, an energy storage inverter, and a photovoltaic storage inverter.

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