A quick pressure relief device for a reaction kettle
By designing a pressure relief cylinder and a one-way limiting mechanism in the reactor, the problem of seal fall-back in traditional reactor pressure relief devices is solved, achieving rapid pressure relief and seal protection, and improving the durability and safety of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG YULONG BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional reactor pressure relief devices are prone to seal slippage when pressure fluctuates, leading to wear on the sealing surface and failing to effectively prevent reactor damage.
A rapid pressure relief device was designed, comprising a pressure relief cylinder, an exhaust pipe, a cylindrical sealing plug, a rectangular column, and a one-way limiting mechanism. Through the cooperation of the elastic compression mechanism and the one-way limiting mechanism, the sealing plug is ensured not to fall back when the pressure fluctuates, thus achieving rapid pressure relief.
This effectively avoids wear on the seals, enables rapid pressure relief of the reactor, and improves the service life and safety of the equipment.
Smart Images
Figure CN224388745U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reaction vessel technology, and in particular to a rapid pressure relief device for a reaction vessel. Background Technology
[0002] In a broad sense, a reaction vessel is a container that carries out physical or chemical reactions. Through structural design and parameter configuration of the container, the heating, evaporation, cooling, and low-to-high-speed mixing functions required by the process can be achieved. Reaction vessels are widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical, and food industries. During production, an automatic pressure relief device needs to be installed at the pressure relief port of the reaction vessel to prevent excessive internal pressure from damaging the reaction vessel.
[0003] When the internal pressure of a reactor continues to rise due to the vigorous chemical reaction, the seals of traditional pressure relief devices (such as valve cores and pistons) can open the pressure relief channel under pressure. However, due to the lack of an effective one-way limiting structure, the seals are prone to "falling back" when the pressure fluctuates. For example, if the pressure inside the reactor drops briefly due to a change in the instantaneous reaction intensity, the pressure fluctuation will cause the seals to move up and down. The edges of the seals will collide and rub against the inner wall of the pressure relief channel at high frequency. Long-term use will cause deformation of the seals and wear of the sealing surface. Therefore, we disclose a rapid pressure relief device for reactors to meet people's needs. Utility Model Content
[0004] The purpose of this application is to provide a rapid pressure relief device for a reaction vessel to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution: a rapid pressure relief device for a reactor, comprising a pressure relief cylinder, wherein the pressure relief cylinder is installed on the pressure relief port of the reactor body, an exhaust pipe is vertically arranged on the outer side of the pressure relief cylinder and communicates with it, a fixed box is fixedly sleeved on the pressure relief cylinder and the exhaust pipe, and a rectangular sleeve is provided on the top of the fixed box;
[0006] A cylindrical sealing plug is movably installed at the connection between the pressure relief cylinder and the exhaust pipe. A rectangular column is fixedly installed on the top of the cylindrical sealing plug. The top of the rectangular column passes through the pressure relief cylinder and the fixed box and is fixedly sleeved with the rectangular sleeve. An elastic compression mechanism is installed on the side of the rectangular column.
[0007] The rectangular column has triangular grooves evenly distributed on its side. A round rod is inserted through the inner wall of the pressure relief cylinder. One end of the round rod extends to the outside of the pressure relief cylinder and is fixedly installed with a movable plate. The side of the movable plate is fixedly connected to the side of the pressure relief cylinder by a spring telescopic rod.
[0008] The side of the movable plate is equipped with a one-way limiting mechanism, and the inner end of the one-way limiting mechanism is arranged parallel to the triangular groove.
[0009] Preferably, the round rod is located below the cylindrical sealing plug.
[0010] Preferably, an installation plate is fixedly sleeved on the outside of the rectangular column, and sealing bellows are sleeved on both the rectangular column and the round rod. The two ends of one set of large-diameter sealing bellows are fixedly connected to the top end of the pressure relief cylinder and the bottom end of the installation plate, respectively, and the two ends of the other set of small-diameter sealing bellows are fixedly connected to the outside of the pressure relief cylinder and the surface of the moving plate, respectively.
[0011] Preferably, the bottom of the rectangular sleeve is in contact with the top of the fixed box.
[0012] Preferably, the elastic compression mechanism includes a support rod fixedly installed on the top of the mounting plate, the top end of the support rod penetrating through the fixed box, a support spring sleeved on the support rod, and the two ends of the support spring being fixedly installed on the inner top wall of the fixed box and the top surface of the mounting plate, respectively.
[0013] Preferably, the unidirectional limiting mechanism includes two reset rods fixedly installed on the surface of the moving plate and arranged in parallel. Each of the two reset rods is slidably sleeved with a reset post. A triangular rod is fixedly installed on the opposite face of the two reset posts. A reset spring is sleeved on each reset rod. The two ends of the reset spring are respectively fixedly installed on the moving plate and the reset post.
[0014] Preferably, the tip of the triangular rod corresponds to the position of the triangular groove at the top of the rectangular column.
[0015] Preferably, the horizontal inner wall of the triangular groove is located above the inclined inner wall, and the top of the triangular rod is horizontally positioned.
[0016] In summary, the technical effects and advantages of this utility model are as follows:
[0017] In this application, when the pressure of the reactor body increases to the point where pressure relief is required, the one-way limiting mechanism cooperates with the triangular groove to one-way limit the rectangular column. When the pressure continues to increase, the pressure exceeds the elastic force of the elastic extrusion mechanism, causing the cylindrical sealing plug and the exhaust pipe to be misaligned for pressure relief. The movement of the cylindrical sealing plug causes the rectangular column to move upward. When the pressure of the reactor body fluctuates in the pressure relief state, the rectangular column and the cylindrical sealing plug cannot move downward. The cylindrical sealing plug will not "fall back" in the pressure relief state, which facilitates rapid pressure relief while reducing the wear of the seal. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a perspective view showing the connection between the pressure relief device and the reactor body of this utility model;
[0020] Figure 2 This is a three-dimensional view of the fixed box and pressure relief cylinder in the pressure relief device after being cut open.
[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0022] Figure 4 A three-dimensional view showing the connection between the movable plate and the one-way limit mechanism.
[0023] In the diagram: 1. Pressure relief cylinder; 2. Reactor body; 3. Fixed box; 4. Exhaust pipe; 5. Cylindrical sealing plug; 6. Round rod; 7. Sealing bellows; 8. Moving plate; 9. Spring telescopic rod; 10. Rectangular column; 11. Support spring; 12. Support rod; 13. Rectangular sleeve; 14. Triangular groove; 15. Mounting plate; 16. Reset spring; 17. Reset rod; 18. Reset column; 19. Triangular rod. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1 - Figure 4 The embodiments provided by this utility model are as follows:
[0026] A rapid pressure relief device for a reactor includes a pressure relief cylinder 1, which is installed on the pressure relief port of the reactor body 2. An exhaust pipe 4 is vertically arranged on the outside of the pressure relief cylinder 1 and communicates with it. A fixed box 3 is fixedly sleeved on the pressure relief cylinder 1 and the exhaust pipe 4. A rectangular sleeve 13 is provided on the top of the fixed box 3.
[0027] A cylindrical sealing plug 5 is movably installed at the connection between the pressure relief cylinder 1 and the exhaust pipe 4. The cylindrical sealing plug 5 is slidably installed inside the pressure relief cylinder 1. A rectangular column 10 is fixedly installed on the top of the cylindrical sealing plug 5. The top of the rectangular column 10 passes through the pressure relief cylinder 1 and the fixed box 3 and is fixedly fitted with the rectangular sleeve 13. An elastic compression mechanism is installed on the side of the rectangular column 10.
[0028] like Figure 2 and Figure 3 As shown, a mounting plate 15 is fixedly sleeved on the outside of the rectangular column 10.
[0029] like Figure 3 As shown, the elastic compression mechanism includes a support rod 12 fixedly installed on the top of the mounting plate 15. The top end of the support rod 12 passes through the fixed box 3, and a support spring 11 is sleeved on the support rod 12. The two ends of the support spring 11 are fixedly installed on the inner top wall of the fixed box 3 and the top surface of the mounting plate 15, respectively. In the initial state, the support spring 11 is in a compressed state. The increase in pressure inside the reactor body 2 does not immediately cause the cylindrical sealing plug 5 to move. As the pressure inside the reactor body 2 continues to increase, the pressure inside the reactor body 2 is greater than the thrust generated by the initial compression of the support spring 11, causing the cylindrical sealing plug 5 to move upward. The cylindrical sealing plug 5 moves and separates from the exhaust pipe 4, thereby releasing pressure. If the pressure continues to increase, the cylindrical sealing plug 5 will continue to move upward. When the cylindrical sealing plug 5 moves, it will drive the rectangular column 10 and the mounting plate 15 to move. During the upward movement of the mounting plate 15, the support spring 11 is compressed again.
[0030] When the pressure in the reactor body 2 increases, the pressure will cause the round rod 6 and the moving plate 8 to move, the spring telescopic rod 9 to stretch and deform, the moving plate 8 to move the one-way limiting mechanism, and the elastic squeezing mechanism to prevent the cylindrical sealing plug 5 from moving.
[0031] The side of the rectangular column 10 is provided with a plurality of evenly arranged triangular grooves 14. A round rod 6 is provided through the inner wall of the pressure relief cylinder 1. Specifically, a round hole is provided on the inner wall of the pressure relief cylinder 1. The round rod 6 is slidably installed in the round hole. When the pressure inside the pressure relief cylinder 1 increases, the round rod 6 will move. One end of the round rod 6 extends to the outside of the pressure relief cylinder 1 and is fixedly installed with a movable plate 8. The side of the movable plate 8 is fixedly connected to the side of the pressure relief cylinder 1 through a spring telescopic rod 9.
[0032] Both the rectangular column 10 and the round rod 6 are fitted with sealing bellows 7. One set of large-diameter sealing bellows 7 is fixedly connected at both ends to the top of the pressure relief cylinder 1 and the bottom of the mounting plate 15, respectively. The other set of small-diameter sealing bellows 7 is fixedly connected at both ends to the outer side of the pressure relief cylinder 1 and the surface of the moving plate 8, respectively. The sealing bellows 7 are used for sealing.
[0033] A one-way limiting mechanism is installed on the side of the movable plate 8, and the inner end of the one-way limiting mechanism is set parallel to the triangular groove 14.
[0034] like Figure 4 As shown, the one-way limiting mechanism includes two reset rods 17 fixedly installed on the surface of the moving plate 8 and arranged parallel to each other. Each reset rod 17 has a reset post 18 slidably sleeved on it. A triangular rod 19 is fixedly installed on the opposite side of the two reset posts 18. A reset spring 16 is sleeved on each reset rod 17, with both ends of the reset spring 16 fixedly installed on the moving plate 8 and the reset post 18, respectively. During pressure relief, the inner wall of the triangular groove 14 presses against the inclined side of the triangular rod 19, causing the triangular rod 19 to move away from the moving plate 8. The movement of the triangular rod 19 drives the two reset posts 18 to move, stretching the two reset springs 16. When the triangular rod 19 aligns with the next triangular groove 14, the two reset springs 16 cause the triangular rod 19 to engage in the next triangular groove 14. This ensures that when pressure relief is required, the rectangular post 10 can only move upwards and cannot move downwards.
[0035] With the above structure: when the pressure in the reactor body 2 continues to increase to the point where pressure relief is required, the one-way limiting mechanism cooperates with the triangular groove 14 to one-way limit the rectangular column 10. When the pressure continues to increase, the pressure is greater than the elastic force of the elastic extrusion mechanism, which will cause the cylindrical sealing plug 5 to be misaligned with the exhaust pipe 4 to relieve pressure. The movement of the cylindrical sealing plug 5 drives the rectangular column 10 to move upward. When the pressure in the reactor body 2 fluctuates in the pressure relief state, the rectangular column 10 and the cylindrical sealing plug 5 cannot move downward. The cylindrical sealing plug 5 will not "fall back" in the pressure relief state, which facilitates rapid pressure relief while reducing the wear of the cylindrical sealing plug 5.
[0036] like Figure 2 As shown, the round rod 6 is located below the cylindrical sealing plug 5. The advantage of this arrangement is that, in the initial state, the cylindrical sealing plug 5 seals the exhaust pipe 4.
[0037] like Figure 3 As shown, the bottom of the rectangular sleeve 13 is in contact with the top of the fixed box 3. The advantage of this arrangement is that the support spring 11 can be in a compressed state in the initial state, and the thrust generated by the support spring 11 will not cause the rectangular column 10 to move.
[0038] like Figure 3 As shown, the tip of the triangular rod 19 corresponds to the position of the triangular groove 14 at the top of the rectangular column 10. The advantage of this arrangement is that it facilitates limiting the movement of the rectangular rod 10 when it moves upward.
[0039] like Figure 3 and Figure 4As shown, the horizontal inner wall of the triangular groove 14 is located above the inclined inner wall, the top of the triangular rod 19 is horizontal, and the side of the triangular rod 19 near the rectangular column 10 is inclined. The advantage of this arrangement is that the triangular rod 19 can cooperate with the triangular groove 14 to achieve unidirectional limiting.
[0040] Working principle:
[0041] Before depressurization, the pressure inside the reactor body 2 increases. Since the bottom of the rectangular sleeve 13 is in contact with the top of the fixed box 3 and the support spring 11 is in a compressed state, the spring telescopic rod 9 is in its original length state. The increase in pressure inside the reactor body 2 will not cause the cylindrical sealing plug 5 to move immediately. However, the round rod 6 can move outward under the action of air pressure. The movement of the round rod 6 drives the moving plate 8 to move, which stretches the spring telescopic rod 9. The movement of the moving plate 8 drives the two reset rods 17, the two reset columns 18 and the triangular rod 19 to move. After the moving plate 8 contacts the inner wall of the fixed box 3, the spring telescopic rod 9 is stretched to its maximum length. At this time, depressurization is required. The triangular rod 19 contacts the inner wall of the uppermost triangular groove 14. At this time, the rectangular column 10 can only move upward. The force generated by the maximum deformation of the spring telescopic rod 9 is the same as the force generated by the deformation of the support spring 11 in its initial compressed state.
[0042] As the pressure inside the reactor body 2 continues to increase, it becomes greater than the thrust generated by the initial compression of the support spring 11. This causes the cylindrical sealing plug 5 to move upward, separating it from the exhaust pipe 4 and thus releasing pressure. If the pressure continues to increase, the cylindrical sealing plug 5 will continue to move upward. As the cylindrical sealing plug 5 moves, it will drive the rectangular column 10 and the mounting plate 15 to move upward. The movement of the mounting plate 15 causes the support spring 11 to continue to compress, while simultaneously causing the inner wall of the triangular groove 14 to press against the inclined side of the triangular rod 19, thus moving the triangular rod 19 away from the moving plate 8. The movement of the triangular rod 19 drives the two reset columns 18 to move, and the two reset springs 16 to stretch. When the triangular rod 19 corresponds to the position of the next triangular groove 14, the two reset springs 16 cause the triangular rod 19 to be inserted into the next triangular groove 14. This ensures that when pressure release is required, the rectangular column 10 can only move upward and cannot move downward, accelerating pressure release.
[0043] At the same time, when the pressure in the pressure relief cylinder 1 does not need to be relieved, the moving plate 8 moves in the opposite direction under the action of the spring telescopic rod 9, so that the triangular rod 19 moves away from the triangular groove 14 and no longer unidirectionally limits the rectangular column 10, thereby allowing the rectangular column 10 to move downward and return to its original state.
[0044] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.
Claims
1. A rapid pressure relief device for a reaction vessel, characterized in that: Includes a pressure relief cylinder (1), which is installed on the pressure relief port of the reactor body (2). An exhaust pipe (4) is vertically arranged on the outside of the pressure relief cylinder (1) and connected to it. A fixed box (3) is fixedly sleeved on the pressure relief cylinder (1) and the exhaust pipe (4). A rectangular sleeve (13) is provided on the top of the fixed box (3). A cylindrical sealing plug (5) is movably provided at the connection between the pressure relief cylinder (1) and the exhaust pipe (4). A rectangular column (10) is fixedly installed on the top of the cylindrical sealing plug (5). The top of the rectangular column (10) passes through the pressure relief cylinder (1) and the fixed box (3) and is fixedly sleeved with the rectangular sleeve (13). An elastic compression mechanism is installed on the side of the rectangular column (10). The rectangular column (10) has triangular grooves (14) evenly distributed on its side. A round rod (6) is provided through the inner wall of the pressure relief cylinder (1). One end of the round rod (6) extends to the outside of the pressure relief cylinder (1) and a movable plate (8) is fixedly installed thereon. The side of the movable plate (8) is fixedly connected to the side of the pressure relief cylinder (1) through a spring telescopic rod (9). The side of the movable plate (8) is equipped with a one-way limiting mechanism, and the inner end of the one-way limiting mechanism is arranged parallel to the triangular groove (14).
2. The rapid pressure relief device for a reaction vessel according to claim 1, characterized in that: The round rod (6) is located below the cylindrical sealing plug (5).
3. The rapid pressure relief device for a reaction vessel according to claim 1, characterized in that: An installation plate (15) is fixedly sleeved on the outside of the rectangular column (10). Both the rectangular column (10) and the round rod (6) are fitted with sealing bellows (7). The two ends of one set of large-diameter sealing bellows (7) are fixedly connected to the top of the pressure relief cylinder (1) and the bottom of the installation plate (15) respectively. The two ends of the other set of small-diameter sealing bellows (7) are fixedly connected to the outside of the pressure relief cylinder (1) and the surface of the moving plate (8) respectively.
4. The rapid pressure relief device for a reaction vessel according to claim 1, characterized in that: The bottom of the rectangular sleeve (13) is in contact with the top of the fixed box (3).
5. A rapid pressure relief device for a reaction vessel according to claim 3, characterized in that: The elastic compression mechanism includes a support rod (12) fixedly installed on the top of the mounting plate (15). The top end of the support rod (12) passes through the fixed box (3). A support spring (11) is sleeved on the support rod (12). The two ends of the support spring (11) are respectively fixedly installed on the inner top wall of the fixed box (3) and the top surface of the mounting plate (15).
6. The rapid pressure relief device for a reaction vessel according to claim 1, characterized in that: The one-way limiting mechanism includes two reset rods (17) fixedly installed on the surface of the moving plate (8) and arranged in parallel. Each of the two reset rods (17) is slidably sleeved with a reset post (18). A triangular rod (19) is fixedly installed on the opposite side of the two reset posts (18). A reset spring (16) is sleeved on the reset rod (17). The two ends of the reset spring (16) are fixedly installed on the moving plate (8) and the reset post (18) respectively.
7. A rapid pressure relief device for a reaction vessel according to claim 6, characterized in that: The tip of the triangular rod (19) corresponds to the position of the triangular groove (14) at the top of the rectangular column (10).
8. A rapid pressure relief device for a reaction vessel according to claim 6, characterized in that: The horizontal inner wall of the triangular groove (14) is located above the inclined inner wall, and the top of the triangular rod (19) is horizontally set.