Gas pipeline valve connecting device

Abstract

The utility model discloses a gas pipeline valve connecting device which comprises flanges and bolt sets A. The number of the flanges is two, the four bolt sets A are arranged outside the flanges, the two flanges are connected through the bolt sets A. Two protective shells are arranged outside the flanges, and movable shafts are arranged on the sides, close to each other, of the two protective shells. The two sets of protective shells are movably connected through a movable shaft, placing plates are arranged at the ends, away from the movable shaft, of the protective shells correspondingly, a plurality of bolt sets B are arranged in the placing plates at equal intervals, the two sets of placing plates are connected through the bolt sets B, and integrated frames are arranged on the outer walls of the protective shells correspondingly; and the integrated frame is fixedly connected with the protective shell, and sliding rods are symmetrically installed in the integrated frame. According to the utility model, not only is the convenient dual-protection valve joint realized, but also the impact force of an external object can be elastically counteracted conveniently, and the protection effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of valve connection devices, specifically a gas pipeline valve connection device. Background Technology

[0002] Gas pipeline valves are devices used to control gas flow in gas pipeline systems. Their main functions include isolating equipment from the pipeline system, regulating flow, preventing backflow, and regulating and releasing pressure. They mainly include ball valves, gate valves, globe valves, and butterfly valves. Different valves are suitable for different gas media and operating conditions. For example, ball valves are suitable for high-pressure and high-temperature gas media, while gate valves are suitable for gas pipelines requiring frequent opening and closing operations. Valve connections typically use flanges to fix the valves in gas pipelines. Traditional connection devices often lack protective functions. Over long-term use, the sealing rings between flanges and the connecting bolts will wear out, leading to unstable connections. To improve this situation, a gas pipeline valve connection device is proposed.

[0003] As disclosed in the patent announcement number CN220980622U, a gas pipeline valve connection device includes a connecting flange; two connecting flanges are symmetrically arranged; a fixing sleeve is fixed between the two connecting flanges by fixing bolts; multiple fixing bolts are provided between the connecting flanges and the fixing sleeve, and the fixing bolts are arranged in a circular array inside the fixing sleeve.

[0004] Although it achieves the structural design of setting a fixed sleeve between two connecting flanges and fixing the connecting flanges and the fixed sleeve with fixing bolts, and wrapping and sealing the joint of the two connecting flanges with the fixed sleeve, it can effectively prevent the joint of the two connecting flanges from contacting the outside air and causing oxidation and corrosion at the joint of the connecting flanges. It effectively solves the problem that gaps between the two flanges lead to poor flange sealing and easily affect the use of pipeline valves.

[0005] However, it does not solve the problem that the existing valve connection device is not convenient to use, and the double protection valve connection is not conducive to elastically offsetting the impact force of external objects, thus affecting the protection effect. Utility Model Content

[0006] The purpose of this utility model is to provide a gas pipeline valve connection device to solve the problem mentioned in the background art that the valve connection device is not convenient for dual protection valve connection, which is not conducive to elastic offsetting of the impact force of external objects and affects the protection effect.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a gas pipeline valve connection device, comprising flanges and A bolt groups. There are two sets of flanges, and four A bolt groups are provided on the outside of each flange. The two sets of flanges are connected by the A bolt groups. Two sets of protective shells are provided on the outside of each flange, and a movable shaft is provided on one side of each set of protective shells that is close to each other. The two sets of protective shells are movably connected by the movable shaft. A placement plate is provided at the end of each protective shell away from the movable shaft. Multiple B bolt groups are provided at equal intervals inside each placement plate, and the two sets of placement plates are connected by the B bolt groups. An integrated frame is provided on the outer wall of each protective shell, and the integrated frame is fixedly connected to the protective shell.

[0008] Preferably, each of the integrated frames has symmetrically installed sliding rods inside, and each of the sliding rods has symmetrically slidably installed sliders on its surface.

[0009] Preferably, each slider is provided with a linkage arm on its side wall, and each linkage arm is provided with a linkage shaft A at the end near the slider, and the linkage arm is movably connected to the slider through the linkage shaft A.

[0010] Preferably, springs are fitted on the surface of the slider rod on one side, and the two ends of the springs are respectively connected to the slider and the integrated frame.

[0011] Preferably, the outer side of the integrated frame is provided with a protective arc plate, and the end of the linkage arm near the protective arc plate is provided with a B linkage shaft, and the linkage arm is movably connected to the protective arc plate through the B linkage shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the valve connection device not only realizes a convenient double protection valve connection, which facilitates elastic offsetting of the impact force of external objects, but also improves the protection effect;

[0013] The valve is connected to the flange, and the two flanges are connected by bolt group A to complete the connection between the valve and the pipeline. Then, the protective shell is rotated around the movable shaft to open the two sets of protective shells. The two sets of protective shells then cover the connection position of the two flanges and the position of bolt group A, providing protection. Tightening bolt group B fixes the two sets of placement plates and secures the protective shell to the flange. When the connection is impacted by a foreign object, the foreign object first hits the surface of the protective arc plate. The foreign object moves the protective arc plate, which drives the linkage arm to rotate through linkage shaft B. The linkage arm drives the slider to slide on the surface of the slide rod through linkage shaft A, and the slider compresses the spring. Under the elastic action of the spring, the spring cancels out part of the force, thereby preventing the impact force of the foreign object from directly hitting the flange and causing damage. This protects the flange connection position and realizes a convenient double protection valve connection, which facilitates elastic cancellation of the impact force of foreign objects and improves the protection effect. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional exploded structure diagram of the present invention;

[0016] Figure 3 This is a three-dimensional perspective structural diagram of the protective arc plate of this utility model;

[0017] Figure 4 This is a side sectional view of the present invention.

[0018] Figure 5 This is a three-dimensional structural diagram of the protective shell of this utility model.

[0019] In the diagram: 1. Flange; 2. Protective arc plate; 3. Bolt group A; 4. Integrated frame; 5. Protective shell; 6. Bolt group B; 7. Placement plate; 8. Movable shaft; 9. Slide rod; 10. Slider; 11. Spring; 12. Linkage shaft A; 13. Linkage arm; 14. Linkage shaft B. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-5 An embodiment of this utility model provides a gas pipeline valve connection device, including a flange 1 and an A bolt group 3. There are two flanges 1, and four A bolt groups 3 are provided on the outside of the flanges 1. The two flanges 1 are connected by the A bolt groups 3. Two protective shells 5 are provided on the outside of the flanges 1. A movable shaft 8 is provided on the side of the two protective shells 5 that is close to each other. The two protective shells 5 are movably connected by the movable shaft 8. A placement plate 7 is provided at the end of the protective shell 5 away from the movable shaft 8. Multiple B bolt groups 6 are provided inside the placement plate 7 at equal intervals. The two placement plates 7 are connected by the B bolt groups 6. An integrated frame 4 is provided on the outer wall of the protective shell 5. The integrated frame 4 is fixedly connected to the protective shell 5.

[0022] The integrated frame 4 is symmetrically equipped with slide rods 9 inside, and slide blocks 10 are symmetrically slidably installed on the surface of slide rods 9. Each slide block 10 is provided with a linkage arm 13 on its side wall. Each linkage arm 13 is provided with an A linkage shaft 12 at one end near the slide block 10, and the linkage arm 13 is movably connected to the slide block 10 through the A linkage shaft 12.

[0023] Springs 11 are fitted on the surface of the slider 9 on one side of the slider 10, and the two ends of the springs 11 are connected to the slider 10 and the integrated frame 4 respectively. The outer side of the integrated frame 4 is provided with a protective arc plate 2, and the end of the linkage arm 13 near the protective arc plate 2 is provided with a B linkage shaft 14, and the linkage arm 13 is movably connected to the protective arc plate 2 through the B linkage shaft 14.

[0024] Connect the valve to flange 1, and connect the two flanges 1 together using bolt group A 3 to complete the connection between the valve and the pipeline. Then rotate the protective shell 5, which rotates around the movable shaft 8 to open the two protective shells 5. The two protective shells 5 then cover the connection points of the two flanges 1 and the location of bolt group A 3, providing protection. Tighten bolt group B 6 to fix the two placement plates 7 together and secure the protective shells 5 to the flanges 1. When the connection point is impacted by an external object, the object first strikes the surface of the protective arc plate 2, and the object then drives the protective arc plate 2. The arc plate 2 moves, and the protective arc plate 2 drives the linkage arm 13 to rotate through the B linkage shaft 14. The linkage arm 13 drives the slider 10 to slide on the surface of the slide rod 9 through the A linkage shaft 12. The slider 10 squeezes the spring 11. Under the elastic action of the spring 11, the spring 11 cancels out this part of the force, thereby preventing the impact force of external objects from directly hitting the flange 1 and causing damage to the flange 1. This protects the connection position of the flange 1 and realizes a convenient double protection valve connection. It facilitates the elastic cancellation of the impact force of external objects and improves the protection effect.

[0025] Working principle: Connect the valve to flange 1, and connect the two flanges 1 together through bolt group A 3 to complete the connection between the valve and the pipeline. Then rotate the protective shell 5. The protective shell 5 rotates around the movable shaft 8 to open the two protective shells 5. Then the two protective shells 5 cover the connection position of the two flanges 1 and the position of bolt group A 3, and the protective shells 5 protect them. Tighten bolt group B 6 to fix the two placement plates 7 and fix the protective shell 5 to the flange 1. When the connection is impacted by a foreign object, the foreign object first hits the surface of the protective arc plate 2. The foreign object drives the protective arc plate 2 to move. The protective arc plate 2 drives the linkage arm 13 to rotate through linkage shaft B 14. The linkage arm 13 drives the slider 10 to slide on the surface of the slide rod 9 through linkage shaft A 12. The slider 10 compresses the spring 11. Under the elastic action of the spring 11, the spring 11 cancels out the force, thereby preventing the impact force of the foreign object from directly hitting the flange 1 and causing damage to the flange 1, thus protecting the connection position of the flange 1.

Claims

1. A gas pipeline valve connection device, comprising a flange (1) and an A-bolt assembly (3), characterized in that: The flange (1) consists of two sets, and four sets of A bolt groups (3) are provided on the outside of the flange (1). The two sets of flanges (1) are connected by the A bolt groups (3). Two sets of protective shells (5) are provided on the outside of the flange (1). A movable shaft (8) is provided on the side of the two sets of protective shells (5) that are close to each other. The two sets of protective shells (5) are movably connected by the movable shaft (8). A placement plate (7) is provided on the end of the protective shell (5) away from the movable shaft (8). Multiple sets of B bolt groups (6) are provided inside the placement plate (7). The two sets of placement plates (7) are connected by the B bolt groups (6). An integrated frame (4) is provided on the outer wall of the protective shell (5). The integrated frame (4) is fixedly connected to the protective shell (5).

2. The gas pipeline valve connection device according to claim 1, characterized in that: The integrated frame (4) is symmetrically equipped with slide rods (9) inside, and the surfaces of the slide rods (9) are symmetrically equipped with sliders (10).

3. A gas pipeline valve connection device according to claim 2, characterized in that: Each slider (10) is provided with a linkage arm (13) on its side wall. Each linkage arm (13) is provided with a linkage shaft (12) A at one end near the slider (10), and the linkage arm (13) is movably connected to the slider (10) through the linkage shaft (12).

4. A gas pipeline valve connection device according to claim 2, characterized in that: Springs (11) are fitted on the surface of the slide rod (9) on one side of the slider (10), and the two ends of the springs (11) are connected to the slider (10) and the integrated frame (4) respectively.

5. A gas pipeline valve connection device according to claim 1, characterized in that: The integrated frame (4) is provided with a protective arc plate (2) on its exterior, and the linkage arm (13) is provided with a B linkage shaft (14) at one end near the protective arc plate (2), and the linkage arm (13) is movably connected to the protective arc plate (2) through the B linkage shaft (14).

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