Explosion-proof natural gas valve cover

Abstract

The utility model relates to an explosion-proof type natural gas valve cover which comprises a valve cover body, a first sealing ring is connected to the lower portion of the valve cover body, first screw holes are formed in the valve cover body and the first sealing ring, and a stabilizing mechanism is connected to the outer portion of the valve cover body. According to the explosion-proof natural gas valve cover, a screw rod penetrates through a first screw hole, is connected with the valve cover through the first screw hole and then is connected with a valve body, so that the valve cover is connected with the valve body, the sealing performance between the valve cover and the valve body is good through a first sealing ring, the valve cover and the valve body are both located on the inner side of a clamping groove, and a second sealing ring is attached to the upper surface of the valve cover; a third sealing ring is attached to the lower surface of the valve body, the sealing performance between the valve deck and the valve body is better through the second sealing ring and the third sealing ring, the screw rod is in threaded connection with the mounting lug through the second screw hole, therefore, the relative positions of the first clamping strip, the second clamping strip, the valve deck and the valve body can be fixed, and the connecting structure has the advantage of being stable in connection.

Description

Technical Field

[0001] The utility model relates to the technical field of valve covers, in particular to an explosion-proof natural gas valve cover. Background Art

[0002] The valve cover is a valve part equipped with a valve stem seal, which is used to connect or support the actuator. The valve cover and the valve body can be an integral whole or separate. The valve cover in the gate valve mainly plays the role of compressing the packing. The valve body has poor sealing performance, which may cause natural gas leakage and explosion.

[0003] For example, the Chinese patent number CN212226136U is an explosion-proof natural gas valve cover. The valve cover is provided with a limit hole and an anti-wear pad. When the valve cover needs to be installed on the valve body, the user inserts the limit hole on the valve cover on the positioning rod on the valve body to achieve accurate positioning of the valve cover, which is convenient for the user to quickly and accurately install the valve cover on the valve body, thereby improving the installation efficiency of the valve body. The anti-wear pad can prevent the limit hole from being worn. By providing a sealing pad and an air cushion, since the sealing pad is located around the valve cover, when the valve cover is installed on the valve body, the sealing pad will be squeezed and fit tightly with the valve body, so that there is no gap between the valve cover and the valve body, and the sealing effect of the valve body is improved, and natural gas is prevented from leaking out from the gap between the valve cover and the valve body. This solves the problem that there may be a certain gap between the valve cover and the valve body when the valve cover is installed on the valve body and the user cannot accurately and quickly install the valve cover on the valve body. However, the connection between the valve cover and the valve body only relies on the method of fastening bolts, and the stability is scarce. Therefore, an explosion-proof natural gas valve cover is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an explosion-proof natural gas valve cover, which has the advantage of stable connection and solves the problem of lack of stability when the connection between the valve cover and the valve body relies solely on fastening bolts.

[0005] In order to achieve the purpose of the above-mentioned stable connection, the utility model provides the following technical solutions: an explosion-proof natural gas valve cover, comprising a valve cover, a first sealing ring is connected to the bottom of the valve cover, a first screw hole is opened inside the valve cover and the first sealing ring, and a stabilizing mechanism is connected to the outside of the valve cover;

[0006] The stabilizing mechanism includes a first clamping strip and a second clamping strip, both of which are located outside the valve cover, one side of the first clamping strip and the second clamping strip are connected to a mounting ear, a second screw hole is provided inside the mounting ear, a clamping groove is provided inside the first clamping strip and the second clamping strip, and a second sealing ring and a third sealing ring are connected to the inner side of the clamping groove.

[0007] Furthermore, the number of the first screw holes of the valve cover is consistent with the number of the first screw holes of the first sealing ring, and the positions of the first screw holes of the valve cover correspond to the positions of the first screw holes of the first sealing ring.

[0008] Furthermore, the first clamping strip and the second clamping strip are both arc-shaped, and the first clamping strip and the second clamping strip are combined to form a ring.

[0009] Furthermore, one side of the first clamping strip and the second clamping strip are hinged to each other, and the mounting ear of the first clamping strip and the mounting ear of the second clamping strip are in contact with each other.

[0010] Furthermore, the clamping slot is located at a middle position of the inner sides of the first clamping strip and the second clamping strip, the valve cover is located on the inner side of the clamping slot, and the diameter of the valve cover corresponds to the diameter of the clamping slot.

[0011] Furthermore, the second sealing ring and the third sealing ring are distributed up and down, and the second sealing ring is in contact with the upper surface of the valve cover.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The explosion-proof natural gas valve cover is connected to the valve body after the screw penetrates the first screw hole and is connected to the valve cover through the first screw hole. The valve cover is connected to the valve body, and the first sealing ring is used to ensure good sealing between the valve cover and the valve body. The valve cover and the valve body are both located on the inner side of the groove, the second sealing ring is fitted with the upper surface of the valve cover, and the third sealing ring is fitted with the lower surface of the valve body. The second sealing ring and the third sealing ring are used to ensure better sealing between the valve cover and the valve body.

[0014] The explosion-proof natural gas valve cover has a screw connected to the mounting ear thread through the second screw hole, thereby fixing the relative positions of the first clamping strip, the second clamping strip, the valve cover and the valve body. The first clamping strip and the second clamping strip can make the connection between the valve cover and the valve body more stable, thereby having the advantage of stable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the valve cover structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the stabilizing mechanism of the utility model;

[0018] Figure 4 It is a schematic diagram of the valve cover and the first clamping strip structure of the utility model.

[0019] In the figure: 1, valve cover; 102, first sealing ring; 103, first screw hole; 2, stabilizing mechanism; 201, first clamping strip; 202, second clamping strip; 203, mounting ear; 204, second screw hole; 205, clamping groove; 206, second sealing ring; 207, third sealing ring. DETAILED DESCRIPTION

[0020] 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 in 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.

[0021] See also Figure 1-4 In this embodiment, an explosion-proof natural gas valve cover includes a valve cover 1, a first sealing ring 102 is connected to the bottom of the valve cover 1, a first screw hole 103 is provided inside the valve cover 1 and the first sealing ring 102, a stabilizing mechanism 2 is connected to the outside of the valve cover 1, the stabilizing mechanism 2 includes a first clamping strip 201 and a second clamping strip 202, the first clamping strip 201 and the second clamping strip 202 are both located outside the valve cover 1, a mounting ear 203 is connected to one side of the first clamping strip 201 and the second clamping strip 202, a second screw hole 204 is provided inside the mounting ear 203, a clamping groove 205 is provided inside the first clamping strip 201 and the second clamping strip 202, and a second sealing ring 206 and a third sealing ring 207 are connected to the inner side of the clamping groove 205.

[0022] In the case implementation, the number of the first screw holes 103 of the valve cover 1 is consistent with the number of the first screw holes 103 of the first sealing ring 102, and the positions of the first screw holes 103 of the valve cover 1 correspond to the positions of the first screw holes 103 of the first sealing ring 102. The screw penetrates the first screw holes 103, and is connected to the valve cover 1 through the first screw holes 103, and then connected to the valve body, thereby connecting the valve cover 1 to the valve body.

[0023] In the case implementation, the first clip 201 and the second clip 202 are both arc-shaped, and the first clip 201 and the second clip 202 are combined to form a ring. One side of the first clip 201 and the second clip 202 are hinged to each other, and the mounting ear 203 of the first clip 201 and the mounting ear 203 of the second clip 202 fit each other, so the first clip 201 and the second clip 202 can rotate at the hinge point, so that the mounting ears 203 of the first clip 201 and the second clip 202 are close to or away from each other, and the screw is threadedly connected to the mounting ear 203 through the second screw hole 204, thereby fixing the relative positions of the first clip 201 and the second clip 202.

[0024] In the case implementation, the slot 205 is located in the middle position of the inner side of the first clip 201 and the second clip 202, the valve cover 1 is located on the inner side of the slot 205, the diameter of the valve cover 1 corresponds to the diameter of the slot 205, the second sealing ring 206 and the third sealing ring 207 are distributed up and down, the second sealing ring 206 fits with the upper surface of the valve cover 1, and the third sealing ring 207 fits with the lower surface of the valve body, thereby making the connection between the valve cover 1 and the valve body more stable through the first clip 201 and the second clip 202.

[0025] When implementing, follow these steps:

[0026] 1) First, a screw is passed through the first screw hole 103, and connected to the valve cover 1 through the first screw hole 103, and then connected to the valve body, thereby connecting the valve cover 1 to the valve body;

[0027] 2) Then the valve cover 1 and the valve body are both located inside the slot 205;

[0028] 3) The screw rod is then threadedly connected to the mounting ear 203 through the second screw hole 204, thereby fixing the relative position of the first clamping strip 201 and the second clamping strip 202.

[0029] In summary, the explosion-proof natural gas valve cover is connected to the valve cover 1 through the first screw hole 103 by means of a screw rod, and then connected to the valve body, thereby connecting the valve cover 1 to the valve body.

[0030] In addition, the valve cover 1 and the valve body are both located on the inner side of the groove 205, the second sealing ring 206 is fitted with the upper surface of the valve cover 1, and the third sealing ring 207 is fitted with the lower surface of the valve body, and the screw is threadedly connected to the mounting ear 203 through the second screw hole 204, thereby fixing the relative positions of the first clamping strip 201 and the second clamping strip 202. Therefore, the connection between the valve cover 1 and the valve body can be more stable through the first clamping strip 201 and the second clamping strip 202, which solves the problem of lack of stability when the connection between the valve cover and the valve body relies solely on fastening bolts.

[0031] 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.

[0032] 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. An explosion-proof natural gas valve cover, comprising a valve cover (1), characterized in that: A first sealing ring (102) is connected to the bottom of the valve cover (1), a first screw hole (103) is provided inside the valve cover (1) and the first sealing ring (102), and a stabilizing mechanism (2) is connected to the outside of the valve cover (1); The stabilizing mechanism (2) comprises a first clamping strip (201) and a second clamping strip (202), wherein the first clamping strip (201) and the second clamping strip (202) are both located outside the valve cover (1), one side of each of the first clamping strip (201) and the second clamping strip (202) is connected to a mounting ear (203), a second screw hole (204) is provided inside the mounting ear (203), a clamping groove (205) is provided inside the first clamping strip (201) and the second clamping strip (202), and the inner side of the clamping groove (205) is connected to a second sealing ring (206) and a third sealing ring (207).

2. The explosion-proof natural gas valve cover according to claim 1, characterized in that: The number of the first screw holes (103) of the valve cover (1) is consistent with the number of the first screw holes (103) of the first sealing ring (102), and the positions of the first screw holes (103) of the valve cover (1) correspond to the positions of the first screw holes (103) of the first sealing ring (102).

3. The explosion-proof natural gas valve cover according to claim 1, characterized in that: The first clamping strip (201) and the second clamping strip (202) are both arc-shaped, and the first clamping strip (201) and the second clamping strip (202) are combined to form a ring.

4. The explosion-proof natural gas valve cover according to claim 1, characterized in that: One side of the first clamping strip (201) and the second clamping strip (202) are hinged to each other, and the mounting ear (203) of the first clamping strip (201) and the mounting ear (203) of the second clamping strip (202) are in contact with each other.

5. The explosion-proof natural gas valve cover according to claim 1, characterized in that: The clamping groove (205) is located at a middle position inside the first clamping strip (201) and the second clamping strip (202), the valve cover (1) is located inside the clamping groove (205), and the diameter of the valve cover (1) corresponds to the diameter of the clamping groove (205).

6. The explosion-proof natural gas valve cover according to claim 1, characterized in that: The second sealing ring (206) and the third sealing ring (207) are arranged vertically, and the second sealing ring (206) is in contact with the upper surface of the valve cover (1).

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