Seal cap structure for high-pressure hydrogen cut-off valve

Abstract

The utility model relates to cut -off valve device technical field especially is sealed valve cover structure for high pressure hydrogen cut -off valve, including the valve cover main part of installing on the valve body, the valve body and valve cover main part all insert bolt, the port of bolt is connected with the nut in screw thread, install the connecting piece on the nut, the connecting piece includes the link block and round hole, the outside wall bottom end of nut is connected with the link block, the sidewall of link block is equipped with round hole, the steel cable can be inserted in round hole, type through the steel cable passes through round hole, and makes the steel cable to keep the taut state, makes the both ends of steel cable twist together, makes each nut to be integrated, when the single nut appears the tendency of loosening and separating, the rest nut will pass through the round hole on the link block of connection, to press down the steel cable, makes the steel cable to press down the nut that will appear separation, makes the nut not to separate, thereby improved the connection stability of nut.

Description

Technical Field

[0001] This utility model relates to the technical field of shut-off valve devices, specifically to a sealing valve cover structure for a high-pressure hydrogenation shut-off valve. Background Technology

[0002] A gate valve, also known as a stop valve, is a type of forced-seal valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to ensure a leak-proof seal. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the frictional force of the valve stem and packing, plus the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the valve stem diameter must be large; otherwise, the valve stem may bend.

[0003] The sealing cover on the gate valve is connected by bolts and nuts, making the sealing valve and the valve body an integral part to form the sealing area of ​​the gate valve. However, multiple nuts are individually connected to the bolt threads. Therefore, if one nut becomes loose and falls off, the other nuts cannot prevent it from falling off. Thus, the individual connecting nuts cannot work together to prevent loosening and falling off. For this reason, a sealing cover structure is needed for the high-pressure hydrogenation gate valve to improve the connection between the nuts, so that when a single nut becomes loose and falls off, the other nuts can restrain the nut from falling off, thereby improving the stability of the nuts.

[0004] This invention proposes a sealing valve cover structure for a high-pressure hydrogenation shut-off valve to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a sealing valve cover structure for a high-pressure hydrogenation shut-off valve.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sealing valve cover structure for a high-pressure hydrogenation shut-off valve, comprising a valve body, a valve cover body mounted on the valve body, bolts inserted into both the valve body and the valve cover body, a nut threadedly connected to the end of the bolt, and a connecting piece mounted on the nut; The connector includes a connecting block and a round hole. The bottom of the outer side wall of the nut is connected to the connecting block, and the side wall of the connecting block has a round hole in which a steel cable can be inserted.

[0007] As a preferred technical solution of this utility model, the outer wall of the nut can be connected to multiple circumferentially arrayed connecting blocks, and the side walls of the multiple connecting blocks are provided with circular holes.

[0008] As a preferred embodiment of this utility model, the two ends of the steel cable are screwed together by a spiral.

[0009] As a preferred embodiment of this utility model, a rubber ring may be connected inside the circular hole, and a rubber sleeve may be fitted on the outer surface of the steel cable.

[0010] As a preferred embodiment of this utility model, the sidewalls of the connecting block are provided with rounded corners.

[0011] As a preferred embodiment of this utility model, the distance between the top end of the connecting block and the top end of the nut is greater than the insertion depth of the output end of the tool gun.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention improves the connection stability of nuts by passing a steel cable through a round hole and keeping it taut, and then twisting the two ends of the steel cable together to connect all the nuts. When a single nut shows signs of loosening and coming off, the remaining nuts will press down on the steel cable through the round hole on the connecting block, preventing the nut from coming off and thus improving the connection stability of the nuts. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of the valve cover of this utility model; Figure 3 This is a schematic diagram of the nut structure of this utility model; Figure 4 This is a schematic diagram of the support block structure of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the support block of this utility model.

[0014] In the diagram: 1. Valve body; 2. Valve cover body; 3. Bolt; 4. Nut; 5. Connector; 501. Connecting block; 502. Round hole; 6. Steel cable; 7. Adjusting component; 701. Support block; 702. Connecting screw hole; 703. Screw; 704. Pressure plate; 705. Bottom hole. Detailed Implementation

[0015] The following will refer to the appendix in the embodiments of this utility model. Figure 1-5The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] Example Please refer to Figures 1-5 The present invention provides the following technical solution: a sealing valve cover structure for a high-pressure hydrogenation shut-off valve, including a valve cover body 2 installed on a valve body 1, both the valve body 1 and the valve cover body 2 can be inserted with bolts 3, the ends of the bolts 3 are threaded with nuts 4, and connecting parts 5 are installed on the nuts 4; The connector 5 includes a connecting block 501 and a round hole 502. The bottom of the outer wall of the nut 4 is connected to the connecting block 501. The distance between the top of the connecting block 501 and the top of the nut 4 is greater than the insertion depth of the output end of the tool gun, so as to avoid the connecting block 501 interfering with the nut 4 so that it can be tightened by the tool gun. The side wall of the connecting block 501 is provided with rounded corners. The outer wall of the nut 4 can be connected to multiple connecting blocks 501 distributed in a circular array. The side walls of multiple connecting blocks 501 are provided with round holes 502. The side walls of the connecting blocks 501 are provided with round holes 502. A steel cable 6 can be inserted into the round hole 502. The two ends of the steel cable 6 are twisted together by a spiral. The steel cable 6 needs to be kept taut.

[0017] After the nut 4 is screwed into the bolt 3, the steel cable 6 is passed through the round hole 502 and kept taut. The two ends of the steel cable 6 are twisted together, connecting all the nuts 4 into one unit. When a single nut 4 shows a tendency to loosen and detach, the remaining nuts 4 will press down on the steel cable 6 through the round hole 502 on the connecting block 501. This presses down on the nut 4 that is about to detach, preventing the nut 4 from detaching and thus improving the connection stability of the nuts 4.

[0018] Please refer to Figure 2 A rubber ring can be connected inside the round hole 502, and a rubber sleeve can be fitted on the outer surface of the steel cable 6 to protect the inner surface of the round hole 502 and the surface of the steel cable 6.

[0019] Please refer to Figure 2 , Figure 4 and Figure 5The valve cover body 2 is provided with an adjusting component 7. The adjusting component 7 includes a support block 701, a connecting screw hole 702, a screw rod 703, a pressure plate 704, and a bottom hole 705. Multiple support blocks 701 are connected to the top of the valve cover body 2. The side wall of the support block 701 is provided with a bottom hole 705. The top of the bottom hole 705 is provided with a connecting screw hole 702. The screw rod 703 is internally threaded into the connecting screw hole 702. The bottom end of the screw rod 703 is connected with a pressure plate 704. The pressure plate 704 is located in the bottom hole 705. The steel cable 6 can pass through the bottom hole 705. The bottom end of the pressure plate 704 is provided with an arc-shaped groove.

[0020] After the steel cable 6 passes through the bottom hole 705 while taut, the screw 703 is rotated. The screw 703 drives the pressure plate 704 to press down, further tightening the steel cable 6 and preventing the steel cable 6 from being under-tightened.

[0021] The working principle and usage process of this utility model are as follows: In specific use, after the nut 4 is screwed into the bolt 3, the steel cable 6 is passed through the round hole 502 and kept taut. The two ends of the steel cable 6 are twisted together, so that all the nuts 4 are connected as one. When a single nut 4 shows a tendency to loosen and detach, the other nuts 4 will press down on the steel cable 6 through the round hole 502 on the connecting block 501. The steel cable 6 presses down on the nut 4 that is about to detach, so that the nut 4 cannot detach, thereby improving the connection stability of the nut 4. After the steel cable 6 passes through the bottom hole 705 while taut, the screw 703 is rotated. The screw 703 drives the pressure plate 704 to press down, further tightening the steel cable 6 and preventing the steel cable 6 from being under-tightened.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sealing valve cover structure for a high-pressure hydrogenation shut-off valve, comprising a valve cover body (2) mounted on a valve body (1), wherein both the valve body (1) and the valve cover body (2) are fitted with bolts (3), and nuts (4) are threadedly connected to the ends of the bolts (3), characterized in that: A connector (5) is installed on the nut (4); The connector (5) includes a connecting block (501) and a round hole (502). The bottom of the outer wall of the nut (4) is connected to the connecting block (501). The side wall of the connecting block (501) is provided with a round hole (502). A steel cable (6) can be inserted into the round hole (502).

2. The sealing valve cover structure for the high-pressure hydrogenation shut-off valve according to claim 1, characterized in that: The outer wall of the nut (4) can be connected to multiple circumferentially distributed connecting blocks (501), and the side walls of the multiple connecting blocks (501) are provided with round holes (502).

3. The sealing valve cover structure for the high-pressure hydrogenation shut-off valve according to claim 1, characterized in that: The two ends of the steel cable (6) are screwed together by a spiral.

4. The sealing valve cover structure for the high-pressure hydrogenation shut-off valve according to claim 1, characterized in that: A rubber ring may be connected inside the circular hole (502), and a rubber sleeve may be fitted on the outer surface of the steel cable (6).

5. The sealing valve cover structure for the high-pressure hydrogenation shut-off valve according to claim 1, characterized in that: The sidewalls of the connecting block (501) are provided with rounded corners.

6. The sealing valve cover structure for the high-pressure hydrogenation shut-off valve according to claim 1, characterized in that: The distance between the top of the connecting block (501) and the top of the nut (4) is greater than the insertion depth of the output end of the tool gun.

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