An overpressure protection device for a gate valve

Abstract

The utility model relates to fluid control technical field discloses a kind of overpressure protection devices of gate valve, including limiting mechanism, reinforcing mechanism and protection mechanism, the limiting mechanism is located at the front end of protection mechanism, the limiting mechanism includes pressure relief pipe, the surface of pressure relief pipe is fixedly connected with link ring, the front end of link ring is fixedly connected with limit ring, the inner wall of limit ring is slidably connected with baffle, the rear end of baffle is fixedly connected with cylinder, the rear end of cylinder is fixedly connected with sliding plate, the utility model is fixed by setting limiting mechanism, the edge of limit ring carries out preliminary fixation to limit plate, then positioning column is inserted into link ring by limiting block, entire operation process can ensure that limit plate has been stably in limit ring inside, avoid the shaking caused by unstable link pipe when directly installing bolt, not only improve the accuracy of installation process, also improve installation convenience, reduce the working difficulty of operator.

Description

Technical Field

[0001] This utility model relates to the field of fluid control technology, and in particular to an overpressure protection device for a gate valve. Background Technology

[0002] The overpressure protection device for gate valves is a safety protection device used in pipeline systems. It is mainly used to prevent damage or malfunction of pipelines or equipment due to excessive working pressure. This device is usually integrated inside or outside the gate valve. When the pressure in the pipeline system exceeds the set safety range, the overpressure protection device will automatically trigger and quickly release the excess pressure, thereby avoiding the rupture, leakage or even explosion of valves, pipelines or related equipment caused by excessive pressure. By monitoring the pressure fluctuations in the system, once the set value is exceeded, the pressure relief function will be quickly activated to ensure the safety of the pipeline system under high pressure. The overpressure protection device can not only effectively improve the safety of the system, but also extend the service life of the equipment and reduce the sudden accidents or maintenance costs caused by overpressure.

[0003] Currently, there are various types of overpressure protection devices for gate valves on the market. However, the pressure relief pipes of these devices are usually directly connected to the connecting pipes via bolts, which makes the connecting pipes prone to shaking during installation, affecting the stability and accuracy of the installation, and also increasing the difficulty of the operator's work. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an overpressure protection device for a gate valve.

[0005] This utility model is achieved by the following technical solution: an overpressure protection device for a gate valve, comprising a limiting mechanism, a reinforcing mechanism, and a protective mechanism, wherein the limiting mechanism is located at the front end of the protective mechanism, and the reinforcing mechanism is located at the front end of the limiting mechanism;

[0006] The limiting mechanism includes a pressure relief pipe, a connecting ring fixedly connected to the surface of the pressure relief pipe, a limiting ring fixedly connected to the front end of the connecting ring, a baffle slidably connected to the inner wall of the limiting ring, a cylinder fixedly connected to the rear end of the baffle, a sliding plate fixedly connected to the rear end of the cylinder, a limiting block fixedly connected to the surface of the sliding plate, a positioning post slidably connected to the inner wall of the limiting block, and a limiting plate slidably connected to the inner wall of the limiting ring.

[0007] Through the above technical solution, the rotation and blocking of the baffle further strengthen the fixation of the limiting plate, ensuring the stability of the limiting plate and preventing it from shifting or loosening during installation.

[0008] As a further improvement to the above solution, four baffles are provided, which are equidistantly distributed inside the limiting ring with the pressure relief pipe as the center, and the baffles are located at the front end of the limiting plate.

[0009] The above technical solution ensures that the pressure is evenly distributed by the equally spaced baffles, thereby effectively limiting the position of the limiting plate and improving the overall stability.

[0010] As a further improvement to the above solution, the sliding plate is located at the rear end of the limiting ring, the cylinder is located inside the limiting ring, and the positioning post is located inside the connecting ring.

[0011] As a further improvement to the above solution, the reinforcement mechanism includes a connecting pipe, and bolts are installed on the inner wall of the limiting plate.

[0012] With the above technical solution, the connecting pipe and the limiting plate are fixedly installed by bolts, which can effectively prevent the limiting plate from loosening due to vibration or other external factors during operation, and ensure the safety of the device under overpressure.

[0013] As a further improvement to the above solution, the connecting tube is fixedly connected to the front end of the limiting plate.

[0014] As a further improvement to the above solution, the protective mechanism includes a body, a base is fixedly connected to the bottom of the body, and a pressure gauge is fixedly connected to the upper end of the body.

[0015] Through the above technical solution, the base provides stable support for the machine body, ensuring that the entire device will not shift or tilt due to vibration or external force during operation, thus enhancing the stability of the device.

[0016] As a further improvement to the above solution, the front end of the machine body is fixedly connected to the rear end of the pressure relief pipe, and the pressure gauge is located at the upper end of the pressure relief pipe.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention utilizes a limiting mechanism. The operator places the limiting plate inside the limiting ring, where the edge of the limiting ring initially secures the limiting plate. Then, the sliding plate is rotated clockwise. The sliding plate, through a cylinder, drives a baffle to rotate as well. The rotated baffle then blocks the front of the limiting plate, ensuring it remains securely within the limiting ring. Next, the positioning pin is inserted into the connecting ring via a limiting block, stabilizing the sliding plate in its current position. This entire process ensures the limiting plate remains stably within the limiting ring, preventing the shaking caused by unstable connecting pipes when directly installing bolts. This not only improves the accuracy of the installation process but also enhances ease of installation and reduces the workload for the operator.

[0019] This invention provides stable support for the entire device by setting a base, ensuring that the device will not lose balance due to external forces. It also avoids possible displacement or tilting during installation. The pressure gauge can monitor the internal pressure of the machine in real time. When the pressure exceeds the safe range, the machine will automatically open to release the pressure, and the fluid will enter the pressure relief pipe, thereby achieving effective protection of the gate valve. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the limiting mechanism of this utility model;

[0022] Figure 3 This is a partial structural schematic diagram of the limiting mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the reinforcement mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the specific structure of the limiting mechanism of this utility model.

[0025] Explanation of key symbols:

[0026] 1. Limiting mechanism; 11. Pressure relief pipe; 12. Connecting ring; 13. Limiting ring; 14. Baffle; 15. Cylinder; 16. Slide plate; 17. Limiting block; 18. Positioning post; 19. Limiting plate; 2. Reinforcing mechanism; 21. Connecting pipe; 22. Bolt; 3. Protective mechanism; 31. Body; 32. Base; 33. Pressure gauge. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] Example:

[0029] Please combine Figure 1-5 An overpressure protection device for a gate valve according to this embodiment includes a limiting mechanism 1, a reinforcing mechanism 2, and a protective mechanism 3. The limiting mechanism 1 is located at the front end of the protective mechanism 3, and the reinforcing mechanism 2 is located at the front end of the limiting mechanism 1.

[0030] The limiting mechanism 1 includes a pressure relief pipe 11, a connecting ring 12 fixedly connected to the surface of the pressure relief pipe 11, a limiting ring 13 fixedly connected to the front end of the connecting ring 12, a baffle 14 slidably connected to the inner wall of the limiting ring 13, a cylinder 15 fixedly connected to the rear end of the baffle 14, a sliding plate 16 fixedly connected to the rear end of the cylinder 15, a limiting block 17 fixedly connected to the surface of the sliding plate 16, a positioning post 18 slidably connected to the inner wall of the limiting block 17, and a limiting plate 19 slidably connected to the inner wall of the limiting ring 13. The rotation and blocking of the baffle 14 further strengthen the fixation of the limiting plate 19, ensuring the stability of the limiting plate 19 and preventing it from shifting or loosening during installation.

[0031] There are four baffles 14. The four baffles 14 are evenly distributed inside the limiting ring 13 with the pressure relief pipe 11 as the center. The baffles 14 are located at the front end of the limiting plate 19. The evenly distributed baffles 14 can ensure uniform pressure distribution, thereby effectively limiting the limiting plate 19 and improving the overall stability.

[0032] The slide plate 16 is located at the rear end of the limiting ring 13, the cylinder 15 is located inside the limiting ring 13, and the positioning pin 18 is located inside the connecting ring 12.

[0033] The reinforcement mechanism 2 includes a connecting pipe 21 and bolts 22 installed on the inner wall of the limiting plate 19. The connecting pipe 21 and the limiting plate 19 are fixedly installed by bolts 22, which can effectively prevent the limiting plate 19 from loosening due to vibration or other external factors during operation and ensure the safety of the device under overpressure.

[0034] The connecting tube 21 is fixedly connected to the front end of the limiting plate 19.

[0035] The protective mechanism 3 includes a body 31, a base 32 is fixedly connected to the bottom of the body 31, and a pressure gauge 33 is fixedly connected to the upper end of the body 31. The base 32 provides stable support for the body 31, ensuring that the entire device will not be displaced or tilted due to vibration or external force during operation, thus enhancing the stability of the device.

[0036] The front end of the body 31 is fixedly connected to the rear end of the pressure relief pipe 11, and the pressure gauge 33 is located at the upper end of the pressure relief pipe 11.

[0037] The implementation principle of the overpressure protection device for a gate valve in this embodiment is as follows: First, the operator places the limiting plate 19 inside the limiting ring 13. At this time, the limiting ring 13 can initially limit and fix the limiting plate 19 around its perimeter. Then, the operator rotates the sliding plate 16 clockwise. The sliding plate 16 can drive the baffle 14 to rotate together via the cylinder 15. The rotating baffle 14 can block the front of the limiting plate 19, thus ensuring that the limiting plate 19 is stably positioned inside the limiting ring 13. Next, the operator inserts the positioning pin 18 from the limiting block 17 into the connecting ring 12, thereby fixing the sliding plate 16 in its current position. This ensures that the baffle 14 is stably positioned at the front end of the limiting plate 19, preventing unnecessary loosening. At this point, the connecting pipe 21 is installed inside the limiting ring 13. Then, by installing bolts 22, the connection between the limiting ring 13 and the limiting plate 19 is further ensured to be stable, thus making the installation of the connecting pipe 21 more secure. The base 32 can provide stable support for the entire device. Through the pressure gauge 33, the operator can observe the pressure value inside the machine body 31 at all times. When the pressure value inside the machine body 31 exceeds the safe range, the machine body 31 can automatically open and release the pressure. The fluid inside the machine body 31 can enter the interior of the pressure relief pipe 11, thereby achieving the effect of relieving pressure. After the operator ensures that the limiting plate 19 is stably inside the limiting ring 13, the bolts 22 are used to further reinforce the installation, avoiding the shaking of the connecting pipe 21 caused by the instability of the limiting plate 19 when directly installing the bolts 22, thus further improving the accuracy and convenience of the installation process.

[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An overpressure protection device for a gate valve, characterized in that, It includes a limiting mechanism (1), a reinforcing mechanism (2) and a protective mechanism (3), wherein the limiting mechanism (1) is located at the front end of the protective mechanism (3) and the reinforcing mechanism (2) is located at the front end of the limiting mechanism (1); The limiting mechanism (1) includes a pressure relief pipe (11), a connecting ring (12) is fixedly connected to the surface of the pressure relief pipe (11), a limiting ring (13) is fixedly connected to the front end of the connecting ring (12), a baffle (14) is slidably connected to the inner wall of the limiting ring (13), a cylinder (15) is fixedly connected to the rear end of the baffle (14), a sliding plate (16) is fixedly connected to the rear end of the cylinder (15), a limiting block (17) is fixedly connected to the surface of the sliding plate (16), a positioning post (18) is slidably connected to the inner wall of the limiting block (17), and a limiting plate (19) is slidably connected to the inner wall of the limiting ring (13).

2. The overpressure protection device for a gate valve as described in claim 1, characterized in that: The number of baffles (14) is four. The four baffles (14) are equidistantly distributed inside the limiting ring (13) with the pressure relief pipe (11) as the center. The baffles (14) are located at the front end of the limiting plate (19).

3. The overpressure protection device for a gate valve as described in claim 2, characterized in that: The sliding plate (16) is located at the rear end of the limiting ring (13), the cylinder (15) is located inside the limiting ring (13), and the positioning post (18) is located inside the connecting ring (12).

4. The overpressure protection device for a gate valve as described in claim 3, characterized in that: The reinforcement mechanism (2) includes a connecting pipe (21), and bolts (22) are installed on the inner wall of the limiting plate (19).

5. The overpressure protection device for a gate valve as described in claim 4, characterized in that: The connecting tube (21) is fixedly connected to the front end of the limiting plate (19).

6. The overpressure protection device for a gate valve as described in claim 5, characterized in that: The protective mechanism (3) includes a body (31), a base (32) is fixedly connected to the bottom of the body (31), and a pressure gauge (33) is fixedly connected to the upper end of the body (31).

7. An overpressure protection device for a gate valve as described in claim 6, characterized in that: The front end of the body (31) is fixedly connected to the rear end of the pressure relief pipe (11), and the pressure gauge (33) is located at the upper end of the pressure relief pipe (11).

Images