A safety pressure relief mechanism for a reaction vessel

Abstract

The utility model discloses a kind of reaction kettle safety pressure relief mechanism, it is related to reaction kettle pressure relief technical field.The utility model includes tank body, still includes first installation pipe, second installation pipe, pressure relief pipe, exhaust pipe, gas pipe, pressure relief assembly and drive part, first installation pipe is fixedly installed in the top of tank body, second installation pipe is fixedly installed in the top of tank body, pressure relief pipe is fixedly installed in the top of first installation pipe, exhaust pipe is fixedly installed in the outside of pressure relief pipe close to top end, pressure relief assembly is arranged in the inside of pressure relief pipe, the pressure relief assembly in the inside of pressure relief pipe is set through the top of pressure relief pipe, drive part is set in the top of second installation pipe, pressure relief assembly and drive part are connected together by gas pipe, by setting pressure relief assembly, cooperate with drive part by gas pipe, receive the air pressure signal conducted by drive part, drive own component action, realize the on-off control of exhaust pipe, complete the safe pressure relief of tank body.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief technology for reaction vessels, and specifically to a safety pressure relief mechanism for reaction vessels. Background Technology

[0002] In the industrial production field, reaction vessels, as the core equipment for carrying out various chemical reactions, are widely used in many industries such as chemical, pharmaceutical, and food. During the chemical reaction process, gas is often generated or its volume expands, which leads to an increase in the internal pressure of the reaction vessel. Therefore, safe pressure relief is an indispensable key link in the operation of the reaction vessel. A reasonable and reliable pressure relief mechanism is directly related to the safety and stability of production and is an important prerequisite for ensuring the normal operation of equipment and the safety of personnel.

[0003] Currently, the industry mostly uses manual rotation of the pressure relief port to release pressure when depressurizing reactors. This manual operation mode has a low degree of automation in the depressurization process. Not only does it require staff to constantly monitor the pressure changes inside the reactor and intervene in a timely manner, increasing labor costs and regulatory burden, but if the reaction inside the reactor is accompanied by high temperatures, the gas discharged through the pressure relief port often carries a high temperature. When staff manually operate the pressure relief structure, their arms, hands, and other parts are likely to come into direct contact with or be close to the high-temperature discharged gas, which can easily cause burns and pose a significant threat to the personal safety of operators. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a safety pressure relief mechanism for a reaction vessel. This mechanism has the advantages of automatically responding to changes in gas pressure within the reaction vessel to achieve safe pressure relief, eliminating the need for manual operation and preventing burns to workers from high-temperature gases. This solves the problem that current manual pressure relief operations have low automation levels and are prone to causing burns to workers from high-temperature gases.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a safety pressure relief mechanism for a reaction vessel, comprising a tank body, a first mounting pipe, a second mounting pipe, a pressure relief pipe, an exhaust pipe, a gas supply pipe, a pressure relief component, and a drive unit. The first mounting pipe is fixedly installed on the top of the tank body, the second mounting pipe is fixedly installed on the top of the tank body, the pressure relief pipe is fixedly installed on the top of the first mounting pipe, an exhaust pipe is fixedly installed on the outer side of the pressure relief pipe near its top, the pressure relief component is disposed inside the pressure relief pipe, the pressure relief component inside the pressure relief pipe penetrates through the top of the pressure relief pipe, the drive unit is disposed on the top of the second mounting pipe, the pressure relief component and the drive unit are connected together through the gas supply pipe, and the drive unit cooperates with the pressure relief component.

[0006] As a preferred technical solution of this utility model, the pressure relief assembly includes a movable hole, which is opened at the top of the pressure relief pipe. A rectangular sliding groove is opened on the inner wall of the pressure relief pipe, and the rectangular sliding groove is connected to one end of the exhaust pipe. A support frame is fixedly installed on the inner wall of the pressure relief pipe, near the bottom surface of the inner wall of the pressure relief pipe.

[0007] As a preferred embodiment of this utility model, the pressure relief assembly further includes a guide rod, which is fixedly installed on the top of the support frame. A movable tube is movably sleeved on the outer side of the guide rod, and the top end of the movable tube passes through a movable hole.

[0008] As a preferred embodiment of the present invention, the pressure relief assembly further includes a first spring, which is fixedly installed at the bottom end of the movable tube, and the other end of the first spring is fixedly installed at the top of the support frame. The first spring is movably sleeved on the outside of the guide rod.

[0009] As a preferred embodiment of the present invention, the pressure relief assembly further includes a first mounting cylinder, which is fixedly mounted on the top of the pressure relief pipe. A piston is movably mounted inside the first mounting cylinder, and the top end of the movable pipe passes through the bottom of the first mounting cylinder and is fixedly mounted to the bottom of the piston.

[0010] As a preferred technical solution of this utility model, the pressure relief assembly further includes a connecting rod, which is fixedly installed on the outer side of the movable tube near the bottom end. A sliding plate is fixedly installed on the other end of the connecting rod. The sliding plate is slidably fitted inside the rectangular groove. A sealing ring is fixedly installed on the side of the sliding plate near the exhaust pipe.

[0011] As a preferred embodiment of the present invention, the driving part includes a second mounting cylinder, which is fixedly mounted on the outside of the second mounting tube, and a second spring is fixedly mounted on the inner top surface of the second mounting cylinder.

[0012] As a preferred technical solution of this utility model, the driving part further includes a top block, which is movably sleeved inside the second mounting tube. The top of the top block is fixedly installed with the bottom end of the second spring. A first vent hole is opened at the bottom of the top block, and a second vent hole is opened on the outer side of the top block. The first vent hole and the second vent hole are connected, and the second vent hole is connected to the air supply pipe.

[0013] The beneficial effects of this utility model are as follows: This invention achieves a reliable and safe pressure relief function through the coordinated operation of the pressure relief component and the drive unit. The sliding fit between the sliding plate and the rectangular sliding groove in the pressure relief component, combined with the sealing ring, can tightly seal the exhaust pipe port, effectively preventing gas leakage in non-pressure relief states. The guide rod's limiting effect on the movable tube allows for precise and controllable lifting and lowering of the sliding plate driven by the movable tube. Combined with the elastic reset characteristic of the first spring, when the pressure inside the tank increases to the point where pressure relief is required, the pressure relief channel can be quickly opened to release accumulated pressure in a timely manner, preventing safety hazards caused by overpressure in the tank. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a safety pressure relief mechanism for a reaction vessel according to this utility model; Figure 2 This is a schematic diagram of the tank structure of this utility model; Figure 3 This is a schematic diagram of the overall cross-sectional structure of the pressure relief component of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the pressure relief pipe of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the first mounting cylinder of this utility model; Figure 6 This is a schematic diagram of the cross-sectional structure of the second mounting cylinder of this utility model; Figure 7 This is a schematic diagram of the top block structure of this utility model.

[0015] Reference numerals: 1. Tank body; 2. First mounting pipe; 3. Second mounting pipe; 4. Pressure relief pipe; 5. Exhaust pipe; 6. Movable hole; 7. Rectangular slide; 8. Support frame; 9. Guide rod; 10. First mounting cylinder; 11. Piston; 12. Movable pipe; 13. First spring; 14. Connecting rod; 15. Slide plate; 16. Sealing ring; 17. Second mounting cylinder; 18. Top block; 19. Second spring; 20. First vent hole; 21. Second vent hole; 22. Gas supply pipe. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0017] Figures 1-7 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figure 1 -Appendix Figure 7 The present invention will be further described below.

[0018] A safety pressure relief mechanism for a reactor includes a tank body 1, a first mounting pipe 2, a second mounting pipe 3, a pressure relief pipe 4, an exhaust pipe 5, a gas supply pipe 22, a pressure relief assembly, and a drive unit. The first mounting pipe 2 is fixedly installed on the top of the tank body 1, the second mounting pipe 3 is fixedly installed on the top of the tank body 1, the pressure relief pipe 4 is fixedly installed on the top of the first mounting pipe 2, and the exhaust pipe 5 is fixedly installed on the outer side of the pressure relief pipe 4 near the top. The pressure relief assembly is disposed inside the pressure relief pipe 4 and extends through the top of the pressure relief pipe 4. The drive unit is disposed on the top of the second mounting pipe 3, and the pressure relief assembly and the drive unit are connected together through the gas supply pipe 22.

[0019] In this embodiment, tank 1 serves as a reaction vessel, carrying the reaction medium and providing a mounting base for the first mounting pipe 2 and the second mounting pipe 3. It acts as a spatial carrier for the internal gas pressure. The first mounting pipe 2 is fixed to the top of tank 1, connecting tank 1 to the pressure relief pipe 4, allowing gas from tank 1 to enter the pressure relief pipe 4. The second mounting pipe 3 is fixed to the top of tank 1, providing a mounting carrier for the second mounting cylinder 17 in the drive unit, enabling the drive unit to directly sense changes in the gas pressure inside tank 1. The pressure relief pipe 4 is fixed to the top of the first mounting pipe 2, providing installation and movement for the pressure relief assembly. The space is connected to the exhaust pipe 5 on the outside, forming a transmission channel for gas pressure relief inside the tank 1. The gas supply pipe 22 connects the drive unit and the pressure relief assembly, constructing a gas pressure transmission path between the two. The gas pressure signal of the drive unit is transmitted to the pressure relief assembly. The pressure relief assembly is set inside the pressure relief pipe 4 and cooperates with the drive unit through the gas supply pipe 22. It receives the gas pressure signal transmitted by the drive unit, drives its own components to move, realizes the on / off control of the exhaust pipe 5, and completes the safe pressure relief of the tank 1. The drive unit is set at the top of the second mounting pipe 3 and is connected to the pressure relief assembly through the gas supply pipe 22. It senses the gas pressure change inside the tank 1 and transmits the gas pressure signal through the gas supply pipe 22 to the pressure relief assembly, drives the pressure relief assembly to move, and realizes pressure relief control.

[0020] Specifically, the pressure relief assembly includes a movable hole 6, which is opened at the top of the pressure relief pipe 4. A rectangular groove 7 is opened on the inner wall of the pressure relief pipe 4. The rectangular groove 7 is connected to one end of the exhaust pipe 5. A support frame 8 is fixedly installed on the inner wall of the pressure relief pipe 4, near the bottom of the inner surface of the pressure relief pipe 4. The pressure relief assembly also includes a guide rod 9, which is fixedly installed on the top of the support frame 8. A movable tube 12 is movably sleeved on the outside of the guide rod 9, and the top end of the movable tube 12 passes through the movable hole 6. The pressure relief assembly also includes a first spring 13, which is fixedly installed at the bottom end of the movable tube 12, and the other end of the first spring 13 is fixedly installed at the top of the support frame 8. The first spring 13 is movably sleeved on the outside of the guide rod 9. The pressure relief assembly also includes a first mounting cylinder 10, which is fixedly mounted on the top of the pressure relief pipe 4. A piston 11 is movably mounted inside the first mounting cylinder 10. The top end of the movable pipe 12 passes through the bottom of the first mounting cylinder 10 and is fixedly mounted on the bottom of the piston 11. The pressure relief assembly also includes a connecting rod 14, which is fixedly installed on the outside of the movable pipe 12 near the bottom end. The other end of the connecting rod 14 is fixedly installed with a sliding plate 15, which is slidably fitted inside the rectangular groove 7. A sealing ring 16 is fixedly installed on the side of the sliding plate 15 near the exhaust pipe 5.

[0021] In this embodiment, by opening the movable hole 6 at the top of the pressure relief pipe 4, a through channel is provided for the top of the movable pipe 12, allowing the movable pipe 12 to move up and down between the pressure relief pipe 4 and the first mounting cylinder 10. A rectangular sliding groove 7 is opened on the inner wall of the pressure relief pipe 4 and communicates with one end of the exhaust pipe 5, providing sliding guide space for the sliding plate 15, restricting the movement trajectory of the sliding plate 15, so that the sliding plate 15 can be accurately aligned with the port of the exhaust pipe 5 to achieve sealing or opening switching. The support frame 8 is fixed near the bottom surface inside the pressure relief pipe 4, providing stable installation support for the guide rod 9, and also serving as the bottom support point of the first spring 13. The bottom of the support frame 8 is tapered, allowing gas to smoothly enter the interior of the pressure relief pipe 4. The guide rod 9 is fixed at the top of the support frame 8 and movably sleeves the movable pipe 12, guiding and limiting the up and down movement of the movable pipe 12 to prevent the movable pipe 12 from deviating. The movable pipe 12 is movably sleeved on the outside of the guide rod 9, with its top end passing through the movable hole 6 and fixed to the piston 11, and its bottom end connected to the first spring 13. The outer side is fixed with a connecting rod 14 to bear the thrust of the piston 11 and the first spring 13. The spring 13's reset force drives the slide plate 15 to slide up and down within the rectangular slide groove 7, thus realizing the switching action of the pressure relief component. The first spring 13 is movably sleeved on the outside of the guide rod 9, with its two ends connected to the bottom end of the movable tube 12 and the top of the support frame 8, respectively, providing elastic reset force for the movable tube 12. When the pressure relief is completed or the air pressure is insufficient, it pushes the movable tube 12 to move upward, causing the slide plate 15 to reset and seal the exhaust pipe 5, ensuring the sealing performance in the non-pressure relief state. The first mounting cylinder 10 is fixed to the top of the pressure relief pipe 4, forming a sealed space inside, allowing the piston 11 to lift. The movable carrier restricts the movement range of the piston 11, so that the air pressure transmitted by the air supply pipe 22 can be concentrated on the piston 11, pushing the piston 11 to move. The connecting rod 14 is fixed on the outside of the movable pipe 12 near the bottom end, connecting the movable pipe 12 and the slide plate 15, and transmitting the up and down movement force of the movable pipe 12 to the slide plate 15, so as to realize the synchronous linkage between the movable pipe 12 and the slide plate 15. A sealing ring 16 is installed on one side of the slide plate 15, which slides along the rectangular slide groove 7 under the drive of the movable pipe 12, so as to seal or open the exhaust pipe 5 port.

[0022] Specifically, the drive unit includes a second mounting cylinder 17, which is fixedly mounted on the outside of the second mounting tube 3, and a second spring 19 is fixedly mounted on the inner top surface of the second mounting cylinder 17. The drive unit also includes a top block 18, which is movably sleeved inside the second mounting tube 3. The top of the top block 18 is fixedly installed with the bottom of the second spring 19. A first vent hole 20 is provided at the bottom of the top block 18, and a second vent hole 21 is provided on the outer side of the top block 18. The first vent hole 20 and the second vent hole 21 are connected, and the second vent hole 21 is connected to the air supply pipe 22.

[0023] In this embodiment, by fixing the second mounting cylinder 17 to the outside of the second mounting tube 3, a top mounting support point is provided for the second spring 19, while limiting the extension and retraction space of the second spring 19 to prevent the second spring 19 from shifting when subjected to force or returning to its original position. The second spring 19 is fixed between the inner top surface of the second mounting cylinder 17 and the top of the top block 18, providing downward elastic support to the top block 18 under normal conditions, keeping the top block 18 in its initial position. When the gas pressure inside the tank 1 increases, pushing the top block 18 upward, the second spring 19 is compressed and stores elastic potential energy. After the gas pressure decreases, the second spring 19 releases its potential energy to push the top block 18 back to its original position, ensuring that the top block 18 can repeatedly respond to changes in gas pressure. The top block 18 is movably sleeved on the second mounting cylinder 17. Inside the mounting tube 3, the top is connected to the second spring 19, and the bottom receives the gas in the tank 1 through the first vent hole 20. It can move up and down with the change of gas pressure in the tank 1. The second vent hole 21 on its outer side is connected to the gas delivery pipe 22, which can transmit the gas pressure in the tank 1 to the gas delivery pipe 22 through the first vent hole 20 and the second vent hole 21. The first vent hole 20 provides a channel for the gas in the tank 1 to enter the top block 18, so that the top block 18 can sense the change of gas pressure in the tank 1 in real time. The second vent hole 21 is opened on the outer side of the top block 18, one end of which is connected to the first vent hole 20, and the other end will be connected to the gas delivery pipe 22 after the top block 18 moves up a certain distance, so as to guide the gas pressure in the tank 1 received by the first vent hole 20 to the gas delivery pipe 22.

[0024] In summary: When this utility model is in use, as the reaction inside the tank 1 produces gas, the gas pressure inside the tank 1 gradually increases until it reaches a state where pressure relief is required. At this time, the high-pressure gas inside the tank 1 will enter the second mounting tube 3 fixed at its top. Since the top block 18 is movably sleeved inside the second mounting tube 3, and the top of the top block 18 is connected to the bottom end of the second spring 19 inside the second mounting cylinder 17, when the pressure of the high-pressure gas is greater than the thrust generated by the initial deformation of the second spring 19, it will generate an upward thrust on the bottom of the top block 18, overcoming the elastic support force of the second spring 19 and lifting the top block 18 upward. The gas flows through the second vent 21 on the outer side of the top block 18 until it aligns and connects with one end of the gas supply pipe 22. Gas then enters the top block 18 through the first vent 20 at the bottom of the top block 18, and flows into the gas supply pipe 22 through the aligned second vent 21. The gas supply pipe 22 transmits the high-pressure gas to the first mounting cylinder 10 fixed at the top of the pressure relief pipe 4. The high-pressure gas entering the first mounting cylinder 10 exerts downward pressure on the piston 11 inside, pushing the piston 11 downward. The bottom of the piston 11 is fixedly connected to the top of the movable pipe 12. The top of the movable pipe 12 passes through the movable hole 6 at the top of the pressure relief pipe 4 and is movably sleeved outside the guide rod 9. Therefore, piston 11 will drive movable tube 12 to slide downward along guide rod 9. At the same time, the first spring 13 connected to the bottom end of movable tube 12 is compressed. Since there is a connecting rod 14 fixed on the outside of movable tube 12, and the other end of the connecting rod 14 is connected to slide plate 15, when movable tube 12 slides downward, it will drive slide plate 15 to move downward along rectangular slide groove 7 through connecting rod 14. This will cause the sealing ring 16 on the side of slide plate 15 near exhaust pipe 5 to move away from the port of exhaust pipe 5, releasing the seal on exhaust pipe 5. At this time, the high-pressure gas in tank 1 will enter the unsealed exhaust pipe 5 through pressure relief pipe 4 and rectangular slide groove 7, and finally be discharged through exhaust pipe 5. When the gas pressure inside the tank 1 decreases and is less than the thrust generated by the initial deformation of the second spring 19, the second spring 19 releases its elastic potential energy to push the top block 18 downward to reset. The second vent hole 21 on the top block 18 is misaligned with the gas supply pipe 22, and the gas pressure inside the gas supply pipe 22 decreases. At the same time, the first spring 13 also releases its elastic potential energy to push the movable pipe 12 upward to reset. The movable pipe 12 drives the sliding plate 15 and the sealing ring 16 to move upward until the sealing ring 16 re-fits the exhaust pipe 5 port to seal it. The entire mechanism returns to its initial state and waits for the gas pressure inside the tank 1 to rise again to the point where pressure relief is needed to repeat the above process.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A safety pressure relief mechanism for a reaction vessel, comprising a tank (1), characterized in that, It also includes a first mounting pipe (2), a second mounting pipe (3), a pressure relief pipe (4), an exhaust pipe (5), a gas supply pipe (22), a pressure relief assembly, and a drive unit. The first mounting pipe (2) is fixedly installed on the top of the tank body (1), the second mounting pipe (3) is fixedly installed on the top of the tank body (1), the pressure relief pipe (4) is fixedly installed on the top of the first mounting pipe (2), and an exhaust pipe (5) is fixedly installed on the outer side of the pressure relief pipe (4) near the top. The pressure relief assembly is located inside the pressure relief pipe (4), and the pressure relief assembly inside the pressure relief pipe (4) is installed through the top of the pressure relief pipe (4). The drive unit is located on the top of the second mounting pipe (3), and the pressure relief assembly and the drive unit are connected together through the gas supply pipe (22). The drive unit works in conjunction with the pressure relief assembly.

2. The safety pressure relief mechanism for a reaction vessel according to claim 1, characterized in that, The pressure relief assembly includes a movable hole (6), which is located at the top of the pressure relief pipe (4). A rectangular groove (7) is provided on the inner wall of the pressure relief pipe (4). The rectangular groove (7) is connected to one end of the exhaust pipe (5). A support frame (8) is fixedly installed on the inner wall of the pressure relief pipe (4) near the bottom of the inner surface of the pressure relief pipe (4).

3. The safety pressure relief mechanism for a reaction vessel according to claim 2, characterized in that, The pressure relief assembly also includes a guide rod (9), which is fixedly installed on the top of the support frame (8). A movable tube (12) is movably sleeved on the outside of the guide rod (9), and the top end of the movable tube (12) passes through the movable hole (6).

4. The safety pressure relief mechanism for a reaction vessel according to claim 3, characterized in that, The pressure relief assembly also includes a first spring (13), which is fixedly installed at the bottom end of the movable tube (12), and the other end of the first spring (13) is fixedly installed at the top of the support frame (8). The first spring (13) is movably sleeved on the outside of the guide rod (9).

5. A safety pressure relief mechanism for a reaction vessel according to claim 4, characterized in that, The pressure relief assembly also includes a first mounting cylinder (10), which is fixedly mounted on the top of the pressure relief pipe (4). A piston (11) is movably mounted inside the first mounting cylinder (10). The top end of the movable pipe (12) passes through the bottom of the first mounting cylinder (10) and is fixedly mounted to the bottom of the piston (11).

6. A safety pressure relief mechanism for a reaction vessel according to claim 5, characterized in that, The pressure relief assembly also includes a connecting rod (14), which is fixedly installed on the outside of the movable tube (12) near the bottom end. The other end of the connecting rod (14) is fixedly installed with a sliding plate (15), which is slidably fitted inside the rectangular slide groove (7). A sealing ring (16) is fixedly installed on the side of the sliding plate (15) near the exhaust pipe (5).

7. A safety pressure relief mechanism for a reaction vessel according to claim 1, characterized in that, The drive unit includes a second mounting cylinder (17), which is fixedly mounted on the outside of the second mounting tube (3), and a second spring (19) is fixedly mounted on the top surface inside the second mounting cylinder (17).

8. A safety pressure relief mechanism for a reaction vessel according to claim 7, characterized in that, The drive unit also includes a top block (18), which is movably sleeved inside the second mounting tube (3). The top of the top block (18) is fixedly installed with the bottom of the second spring (19). A first vent hole (20) is opened at the bottom of the top block (18), and a second vent hole (21) is opened on the outside of the top block (18). The first vent hole (20) is connected to the second vent hole (21), and the second vent hole (21) is connected to the air supply pipe (22).

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