A pressure relief protection device for ion membrane electrolyzer

Abstract

The present invention relates to the technical field of electrolytic cell pressure relief protection, and specifically to an ion membrane electrolytic cell pressure relief protection device, comprising a water seal cylinder, an inlet pipe fixedly installed inside one side of the water seal cylinder, and a discharge pipe fixedly installed inside the top of the water seal cylinder. Through the coordinated operation of a water injection component and a trigger component, when the water level inside the water seal cylinder drops, a floating plate will drop synchronously, so as to automatically replenish water, thereby reducing the workload of manual inspection and manual operation, reducing the problems that may be caused by manual operation errors, ensuring the sealing effect of the water seal and the performance of the pressure relief protection device, avoiding gas leakage in the electrolytic cell, ensuring product quality and production efficiency, and at the same time, when replenishing water, after the injected water passes through the buffer component, the water replenishment can be made more uniform and stable, avoiding excessive fluctuation of the water level in the water seal cylinder due to too rapid or uneven water replenishment, and helping to keep the water level in the water seal cylinder within a set range.

Description

Technical Field

[0001] The invention relates to the technical field of electrolytic cell pressure relief protection, in particular to an ion membrane electrolytic cell pressure relief protection device. Background Art

[0002] When the ion membrane electrolyzer is in normal production, in order to protect the safety of the electrolyzer and the ion membrane, a chlorine main pressure interlock trip value is set in the DCS interlock protection system. Three parallel chlorine pressure transmitters perform cascade interlock feedback on the chlorine main pressure. When the cascade measurement value of the three pressure transmitters reaches the trip value, the system interlock trip will be triggered, which provides safety protection for the ion membrane caustic soda system.

[0003] The commonly used pressure relief protection device for ion membrane electrolyzer is a water-seal pressure relief protection device. The existing water-seal pressure relief protection device for ion membrane electrolyzer mainly includes a hydrogen water seal component and a chlorine water seal component. During operation, when the pressure in the ion membrane electrolyzer rises and exceeds the set value, for example, the chlorine pressure on the anode side increases, the gas enters the chlorine water seal cylinder through the chlorine inlet pipe. Since the pressure of the incoming gas is relatively large, the liquid level in the water seal cylinder will be pressed down, so that the gas can be discharged from the chlorine discharge pipe, thereby achieving pressure relief and ensuring that the pressure in the electrolyzer is not too high. For the hydrogen water seal, when the hydrogen pressure is too high, the hydrogen enters the hydrogen water seal cylinder through the hydrogen inlet pipe, and the liquid level is also pressed down and then discharged from the hydrogen discharge pipe to relieve the pressure.

[0004] However, the water seal tube components in the existing hydrogen water seal assembly and chlorine water seal assembly still have certain defects in actual use: in the actual operation process, the water level inside the water seal tube in the water seal type pressure relief protection device will drop. The drop in the water seal tube water level may be caused by a variety of reasons, such as slight leakage in the system, water evaporation caused by temperature changes, etc. Once the water level drops, the sealing effect of the water seal will be affected, thereby weakening the performance of the pressure relief protection device. If the water seal tube cannot be replenished with water in time, it may cause gas leakage in the electrolyzer, affecting the quality and production efficiency of the product. At the same time, after replenishing water, the water quality inside the water seal tube cannot be tested, and water quality problems cannot be discovered in time. When the added water causes the water quality inside the water seal tube to fail to meet the requirements, over time, it will gradually have a negative impact on the operation of the entire water seal type pressure relief protection device and the ion membrane electrolyzer, reducing the service life of the water seal pressure relief protection device. Summary of the invention

[0005] The purpose of the present invention is to provide an ion membrane electrolyzer pressure relief protection device to solve the problem proposed in the above background technology that the water seal cylinder cannot be replenished with water in time, which may cause gas leakage in the electrolyzer, affecting the quality and production efficiency of the product. At the same time, the water quality inside the water seal cylinder cannot be detected after replenishing water, and water quality problems cannot be discovered in time. When the added water causes the water quality inside the water seal cylinder to not meet the requirements, it will gradually have a negative impact on the operation of the entire water-seal pressure relief protection device and the ion membrane electrolyzer over time, thereby reducing the service life of the water seal pressure relief protection device.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pressure relief protection device for an ion membrane electrolyzer, comprising a water seal cylinder, an inlet pipe fixedly installed inside one side of the water seal cylinder, and a discharge pipe fixedly installed inside the top end of the water seal cylinder, an inlet valve is fixedly installed inside one side of the inlet pipe, a sewage pipe is installed inside the bottom end of the water seal cylinder, a valve is fixedly installed inside one side of the sewage pipe, a fixing frame is fixedly installed on one side of the water seal cylinder, a plurality of fixing holes are evenly spaced inside the fixing frame, a water injection pipe is fixedly installed on one side of the top end of the water seal cylinder, a water injection assembly and a liquid injection detection assembly are arranged on one side of the water injection pipe, a floating plate is arranged inside the water seal cylinder, a trigger assembly and a buffer assembly are arranged on the top end of the floating plate, and a guide assembly is arranged on the side of the floating plate close to the inner wall of the water seal cylinder.

[0007] Furthermore, the trigger assembly includes a connecting shaft and a positioning plate, the connecting shaft is longitudinally fixedly installed on the outside of the top end of the floating plate, the top end of the connecting shaft passes through the sliding seal and is installed on the outside of one side of the top end of the water seal cylinder, the positioning plate is fixedly installed on the outside of the top end of the connecting shaft, and the outside of the top end of the connecting shaft is sleeved with a tension spring, and both ends of the tension spring are respectively installed on the outside of the positioning plate and one side of the water seal cylinder.

[0008] Furthermore, the water injection assembly includes a connecting rack and a rotating rod, the connecting rack is longitudinally fixedly installed on the outside of one side of the top end of the positioning plate, the rotating rod is rotatably installed through the inside of one side of the water injection pipe close to the connecting rack, a sealing block is fixed through the outside of one side of the rotating rod located inside the water injection pipe, a limiting gear is fixedly installed on one end of the rotating rod, one side of the limiting gear is meshed with one side of the connecting rack, two limiting rods are symmetrically and longitudinally installed for sliding at the outer edge of the positioning plate, and the bottom ends of the two limiting rods are fixedly installed on the outside of one side of the top end of the water seal cylinder.

[0009] Furthermore, the buffer assembly includes a support frame and a buffer guide cover, the support frame is fixedly mounted on the outside of one side of the top end of the floating board, the buffer guide cover is fixedly mounted on the outside of one side of the top end of the support frame, the buffer guide cover is arranged in an arc-shaped slope, and the top opening of the buffer guide cover is arranged on the bottom side of the output end of the water injection pipe.

[0010] Furthermore, the guide assembly includes a limiting rail and a limiting slider, the limiting rail is longitudinally fixedly installed on the inside of one side of the water seal tube close to the floating plate, the limiting slider is fixedly installed on the outside of one side of the floating plate close to the limiting rail, the inside of the limiting rail is longitudinally embedded with a limiting groove, and the limiting slider is slidably engaged and installed on the inside of one side of the limiting groove.

[0011] Furthermore, a plurality of limiting balls are rotatably mounted on the inner wall of the limiting slide groove at equal intervals, and outer walls of one side of the plurality of limiting balls are in contact with and fit with outer surfaces of corresponding sides of the limiting slide block.

[0012] Furthermore, the liquid injection detection component includes a reagent storage tank and a piston cylinder, the reagent storage tank is fixedly mounted on the outside of one side of the water seal cylinder, the piston cylinder is inverted on the outside of the top side of the water seal cylinder, and a plurality of auxiliary rods are longitudinally installed at equal intervals at the edge of the bottom opening of the piston cylinder, and the bottom ends of the plurality of auxiliary rods are fixedly mounted on the outside of the top side of the water seal cylinder.

[0013] Furthermore, a piston block is installed in a sliding seal inside one side of the piston cylinder, a resistance rod is longitudinally fixed to the bottom end of the piston block, a connecting frame is transversely fixed to the bottom end of the resistance rod, and one side of the connecting frame is fixedly connected to the outside of one side of the positioning plate.

[0014] Furthermore, a liquid inlet pipe is provided through one side of the top end of the piston cylinder, and an input end of the liquid inlet pipe is fixedly installed inside one side of the reagent storage tank, and a one-way valve 1 is fixedly connected to the inside of one side of the liquid inlet pipe.

[0015] Furthermore, a drain pipe is provided through the other side of the top end of the piston cylinder, and the output end of the drain pipe is fixedly installed inside one side of the water seal cylinder, a one-way valve 2 is fixedly connected through the inside of one side of the drain pipe, and a transparent observation window is installed through the inside of one side of the water seal cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] Through the coordinated operation of the water injection component and the trigger component, when the water level inside the water seal tube drops, the floating plate will drop synchronously to automatically replenish water, thereby reducing the workload of manual inspection and manual operation, reducing the problems that may be caused by manual operation errors, and at the same time ensuring the sealing effect of the water seal and the performance of the pressure relief protection device, avoiding gas leakage in the electrolytic cell, ensuring product quality and production efficiency, and at the same time during water replenishment, when the injected water passes through the buffer component, the water replenishment can be more uniform and stable, avoiding excessive fluctuations in the water level in the water seal tube due to too rapid or uneven water replenishment, helping to keep the water level in the water seal tube within the set range, ensuring the reliability of the water seal effect, and the overall use effect is better.

[0018] When the water injection component is replenishing water inside the water seal cylinder, the liquid injection detection component on the side will be triggered to start running synchronously, thereby discharging a certain amount of detection reagent into the water seal cylinder. When the reagent falls into the water, it quickly mixes with the water, and the color of the water changes accordingly. The staff can observe the color change of the water inside the water seal cylinder through the transparent observation window and preliminarily judge the water quality. In this way, the water quality problem can be detected after each water replenishment, so as to avoid the situation where water that does not meet the requirements has a negative impact on the operation of the entire water seal pressure relief protection device and the ion membrane electrolyzer during long-term use, thereby extending the service life of the water seal pressure relief protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the water seal cylinder and the transparent observation window of the present invention;

[0021] Figure 3 It is a schematic diagram of a sectional three-dimensional structure of a partial installation of a water seal cylinder and a floating plate of the present invention;

[0022] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the rotating rod and the sealing block of the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the installation of the limiting track and the limiting slider of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the water seal cylinder and the piston cylinder of the present invention;

[0026] Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in the middle;

[0027] Fig. 9 This is a schematic diagram showing the synchronous lowering of the floating plate caused by the lowering of the water level inside the water seal tube of the present invention.

[0028] In the attached drawings, the list of parts represented by each reference numeral is as follows: 1. water seal cylinder; 2. inlet pipe; 3. inlet valve; 4. outlet pipe; 5. sewage pipe; 6. valve; 7. water injection pipe; 8. floating plate; 9. connecting shaft; 10. positioning plate; 11. tension spring; 12. limit rod; 13. connecting rack; 14. rotating rod; 15. sealing block; 16. limit gear; 17. supporting frame; 18. buffer guide cover; 19. limit rail; 20. limit slide groove; 21. limit slider; 22. limit ball; 23. reagent storage tank; 24. piston cylinder; 25. connecting frame; 26. resistance rod; 27. piston block; 28. auxiliary rod; 29. ​​liquid inlet pipe; 30. one-way valve 1; 31. liquid discharge pipe; 32. one-way valve 2; 33. transparent observation window; 34. fixing frame; 35. fixing hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1 - Figure 6 A pressure relief protection device for an ion membrane electrolyzer comprises a water seal cylinder 1, an inlet pipe 2 which is fixedly installed inside one side of the water seal cylinder 1, and a discharge pipe 4 which is fixedly installed inside the top of the water seal cylinder 1, an inlet valve 3 is fixedly connected and installed inside one side of the inlet pipe 2, a sewage pipe 5 is connected and installed inside the bottom of the water seal cylinder 1, a valve 6 is fixedly connected and installed inside one side of the sewage pipe 5, a fixing frame 34 is fixedly installed on one side of the water seal cylinder 1, a plurality of fixing holes 35 are evenly spaced inside the fixing frame 34, a water injection pipe 7 is fixedly installed on one side of the top of the water seal cylinder 1, a water injection assembly and a liquid injection detection assembly are arranged on one side of the water seal cylinder 1, a floating plate 8 is arranged inside the water seal cylinder 1, a trigger assembly and a buffer assembly are arranged on the top of the floating plate 8, and a guide assembly is arranged on the side of the floating plate 8 close to the inner wall of the water seal cylinder 1.

[0031] The trigger assembly includes a connecting shaft 9 and a positioning plate 10. The connecting shaft 9 is longitudinally fixedly installed on the outside of the top end of the floating plate 8. The top end of the connecting shaft 9 passes through the sliding seal and is installed on the outside of one side of the top end of the water seal cylinder 1. The positioning plate 10 is fixedly installed on the outside of the top end of the connecting shaft 9. The top end of the connecting shaft 9 is sleeved with a tension spring 11. The two ends of the tension spring 11 are respectively installed on the outside of the positioning plate 10 and one side of the water seal cylinder 1.

[0032] The water injection assembly includes a connecting rack 13 and a rotating rod 14. The connecting rack 13 is longitudinally fixedly installed on the outside of one side of the top of the positioning plate 10. The rotating rod 14 is rotatably installed and penetrates the inside of one side of the water injection pipe 7 close to the connecting rack 13. A sealing block 15 is fixedly penetrated on the outside of one side of the rotating rod 14 located inside the water injection pipe 7. A limiting gear 16 is fixedly installed on one end of the rotating rod 14. One side of the limiting gear 16 is meshed and connected with one side of the connecting rack 13. Two limiting rods 12 are symmetrically and longitudinally penetrated and slidably installed at the outer edge of the positioning plate 10. The bottom ends of the two limiting rods 12 are fixedly installed on the outside of one side of the top of the water seal tube 1.

[0033] Specifically, the two limiting rods 12 are used to limit the positioning plate 10 so that the positioning plate 10 can move up and down more smoothly and stably.

[0034] The buffer assembly includes a support frame 17 and a buffer guide cover 18. The support frame 17 is fixedly mounted on the outside of one side of the top end of the floating plate 8. The buffer guide cover 18 is fixedly mounted on the outside of one side of the top end of the support frame 17. The buffer guide cover 18 is arranged in an arc slope shape. The top opening of the buffer guide cover 18 is arranged on the bottom side of the output end of the water injection pipe 7.

[0035] The guide assembly includes a limiting rail 19 and a limiting slider 21. The limiting rail 19 is longitudinally fixedly installed on the inside of the water seal tube 1 on one side close to the floating plate 8. The limiting slider 21 is fixedly installed on the outside of the floating plate 8 on one side close to the limiting rail 19. A limiting groove 20 is longitudinally embedded inside the limiting rail 19. The limiting slider 21 is slidably engaged and installed inside one side of the limiting groove 20.

[0036] A plurality of limiting balls 22 are rotatably mounted on the inner wall of the limiting slide groove 20 at equal intervals, and the outer walls of one side of the plurality of limiting balls 22 are in contact with and fit with the outer surface of the corresponding side of the limiting slider 21 .

[0037] In the present embodiment, firstly, the existing bolts are passed through the fixing holes 35 on one side of the fixing frame 34, and then screwed into one side of the ion membrane electrolyzer, so as to fix the present water-sealed pressure relief protection device to the ion membrane electrolyzer, and at the same time, the inlet pipe 2 is connected and installed inside one side of the ion membrane electrolyzer. During operation, when the pressure in the ion membrane electrolyzer rises to exceed the set value, the pressure increases, and the gas finally enters the water seal tube 1 through the inlet pipe 2 and the inlet valve 3. Since the pressure of the entering gas is relatively large, the liquid surface in the water seal tube 1 will be pressed down, so that the gas can be discharged from the discharge pipe 4, thereby achieving pressure relief and ensuring that the pressure in the electrolyzer is not too high. After the present water-sealed pressure relief protection device has been used for a certain period of time, the water level inside the water seal tube 1 will drop. When the water level inside the water seal tube 1 drops, the tension spring 11 at the top will rebound and press down to drive the floating plate 8 on the water surface to drop synchronously, and the connecting shaft 9 will drive the connecting rack 13 on the top side to drop synchronously in the process of driving the positioning plate 10 to drop. When the connecting rack 13 descends, it will drive the limited gear 16 meshed on one side to rotate. When the limited gear 16 rotates, it will drive the rotating rod 14 and the sealing block 15 inside the water injection pipe 7 to rotate synchronously by a certain angle. Through the rotation of the sealing block 15, the water injection pipe 7 is connected to the inside of the water seal cylinder 1, so that the water outside the water injection pipe 7 is automatically discharged into the inside of the water seal cylinder 1, thereby completing the automatic water replenishment of the water seal cylinder 1, thereby reducing the workload of manual inspection and manual operation, reducing the problems that may be caused by manual operation errors, and at the same time ensuring the sealing effect of the water seal and the performance of the pressure relief protection device, avoiding gas leakage in the electrolytic cell, and ensuring the quality and production efficiency of the product. When replenishing water, as the water level continues to rise, it will also drive the floating plate 8 to rise synchronously, thereby driving the connecting shaft 9 and the connecting rack 13 to rise synchronously, thereby driving the sealing block 15 to rotate and reset. When the water level reaches the specified position, the sealing block 15 completes the rotation and reset, and the water injection pipe 7 is blocked to ensure the accuracy of water replenishment.

[0038] It should also be noted that when the water discharged from the water injection pipe 7 enters the interior of the water seal cylinder 1, it will pass through the arc-shaped sloped buffer guide cover 18. The arc-shaped setting of the buffer guide cover 18 can buffer the discharged water, making the water replenishment more uniform and stable, avoiding excessive fluctuations in the water level in the water seal cylinder 1 due to too rapid or uneven water replenishment, helping to keep the water level in the water seal cylinder 1 within the set range, ensuring the reliability of the water seal effect, and achieving a better overall use effect.

[0039] It should also be noted that, through the sliding engagement installation of the limit slider 21 inside the limit track 19 and the fitting rolling setting of the limit ball 22, the floating board 8 is made more stable and smooth when moving, thereby preventing the floating board 8 from shaking due to factors such as water flow impact during long-term use, ensuring the overall operation stability and extending the service life.

[0040] Example 2: Please refer to Figure 7 - Fig. 9 This embodiment further explains Example 1. The liquid injection detection component includes a reagent storage tank 23 and a piston cylinder 24. The reagent storage tank 23 is fixedly installed on the outside of one side of the water seal cylinder 1, and the piston cylinder 24 is inverted on the outside of the top side of the water seal cylinder 1. A plurality of auxiliary rods 28 are longitudinally installed at equal intervals at the edge of the bottom opening of the piston cylinder 24, and the bottom ends of the plurality of auxiliary rods 28 are fixedly installed on the outside of the top side of the water seal cylinder 1.

[0041] Specifically, by providing a plurality of auxiliary rods 28 , it is ensured that the piston cylinder 24 can be stably installed outside the top end of the water seal cylinder 1 , thereby ensuring stability in later use.

[0042] A piston block 27 is installed in a sliding seal inside one side of the piston cylinder 24. A resistance rod 26 is longitudinally fixed to the bottom end of the piston block 27. A connecting frame 25 is transversely fixed to the bottom end of the resistance rod 26. One side of the connecting frame 25 is fixedly connected to the outside of one side of the positioning plate 10.

[0043] A liquid inlet pipe 29 is provided through one side of the top end of the piston cylinder 24 , and an input end of the liquid inlet pipe 29 is fixedly installed inside one side of the reagent storage tank 23 , and a one-way valve 30 is fixedly connected to the inside of one side of the liquid inlet pipe 29 .

[0044] Specifically, the output end of the one-way valve 30 faces the interior of one side of the top end of the piston cylinder 24 , and the input end of the one-way valve 30 faces the interior of one side of the reagent storage tank 23 .

[0045] A drain pipe 31 is provided on the other side of the top of the piston cylinder 24, and the output end of the drain pipe 31 is fixedly installed inside one side of the water seal cylinder 1. A one-way valve 32 is fixedly connected to the inside of one side of the drain pipe 31, and a transparent observation window 33 is installed inside one side of the water seal cylinder 1.

[0046] Specifically, the output end of the second one-way valve 32 faces the inside of one side of the water seal cylinder 1 , and the input end of the second one-way valve 32 faces the inside of one side of the top end of the piston cylinder 24 .

[0047] In the present embodiment, when the floating plate 8 drives the connecting shaft 9 and the positioning plate 10 to descend for water replenishment, the positioning plate 10 will drive the connecting frame 25 fixed on one side to descend synchronously when it descends, and the connecting frame 25 will drive the resistance rod 26 and the piston block 27 on one side to descend synchronously inside the piston cylinder 24 when it descends, and cooperate with the conductive connection of the liquid inlet pipe 29 and the one-way valve 30, so that when the piston block 27 descends inside the piston cylinder 24, a certain amount of detection reagent inside the reagent storage tank 23 on one side is extracted into the interior of the piston cylinder 24. As the water replenishment dose increases, when the floating plate 8 drives the connecting shaft 9 and the positioning plate 10 to rise, it will drive the resistance rod 26 and the piston block 27 on one side to be lifted synchronously inside the piston cylinder 24, and cooperate with the discharge pipe 31 and the one-way valve 30. The conduction setting of 32 is used to squeeze the detection reagent originally extracted from the inside of the piston cylinder 24 into the inside of the water seal cylinder 1. When the reagent falls into the water, it quickly mixes with the water, and the color of the water changes accordingly. The staff can observe the color change of the water inside the water seal cylinder 1 through the transparent observation window 33, and preliminarily judge the water quality. In this way, the water quality problem can be detected after each water replenishment, so as to avoid the situation where water that does not meet the requirements has a negative impact on the operation of the entire water-sealed pressure relief protection device and the ion membrane electrolyzer during long-term use, thereby extending the service life of the water-sealed pressure relief protection device. At the same time, when the water quality inside the water seal cylinder 1 has problems and needs to be replaced during use, the valve 6 can be opened, and the inlet valve 3 can be closed at the same time, and the water inside the water seal cylinder 1 can be discharged through the sewage pipe 5.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure relief protection device for an ion membrane electrolyzer, comprising a water seal cylinder (1), an inlet pipe (2) penetrating and fixedly installed inside one side of the water seal cylinder (1), and a discharge pipe (4) penetrating and fixedly installed inside the top end of the water seal cylinder (1), characterized in that: An inlet valve (3) is fixedly connected and penetrated inside one side of the inlet pipe (2); a sewage pipe (5) is penetrated and connected inside the bottom end of the water seal cylinder (1); a valve (6) is fixedly connected and penetrated inside one side of the sewage pipe (5); a fixing frame (34) is fixedly installed on one side of the water seal cylinder (1); a plurality of fixing holes (35) are evenly spaced and penetrated inside the fixing frame (34); a water injection pipe (7) is fixedly installed on one side of the top end of the water seal cylinder (1); a water injection assembly and a liquid injection detection assembly are arranged on one side of the water injection pipe (7); a floating plate (8) is arranged inside the water seal cylinder (1); a trigger assembly and a buffer assembly are arranged on the top end of the floating plate (8); and a guide assembly is arranged on the side of the floating plate (8) close to the inner wall of the water seal cylinder (1).

2. The ion membrane electrolyzer pressure relief protection device according to claim 1, characterized in that: The trigger assembly comprises a connecting shaft (9) and a positioning plate (10); the connecting shaft (9) is longitudinally fixedly mounted on the outside of the top end of the floating plate (8); the top end of the connecting shaft (9) passes through a sliding seal and is mounted on the outside of one side of the top end of the water seal cylinder (1); the positioning plate (10) is fixedly mounted on the outside of the top end of the connecting shaft (9); a tension spring (11) is sleeved on the outside of the top end of the connecting shaft (9); and two ends of the tension spring (11) are respectively mounted on the outside of the positioning plate (10) and one side of the water seal cylinder (1).

3. The pressure relief protection device for an ion membrane electrolyzer according to claim 2, characterized in that: The water injection assembly comprises a connecting rack (13) and a rotating rod (14), wherein the connecting rack (13) is longitudinally fixedly mounted on the outside of one side of the top end of the positioning plate (10), and the rotating rod (14) is rotatably installed through the inside of a side of the water injection pipe (7) close to the connecting rack (13). A sealing block (15) is fixedly installed through the outside of one side of the rotating rod (14) located inside the water injection pipe (7), and a limiting gear (16) is fixedly mounted on one end of the rotating rod (14), and one side of the limiting gear (16) is meshedly connected with one side of the connecting rack (13). Two limiting rods (12) are symmetrically installed longitudinally and slidably at the outer edge of the positioning plate (10), and the bottom ends of the two limiting rods (12) are fixedly mounted on the outside of one side of the top end of the water seal cylinder (1).

4. The ion membrane electrolyzer pressure relief protection device according to claim 1, characterized in that: The buffer assembly comprises a support frame (17) and a buffer guide cover (18); the support frame (17) is fixedly mounted on the outside of one side of the top end of the floating board (8); the buffer guide cover (18) is fixedly mounted on the outside of one side of the top end of the support frame (17); the buffer guide cover (18) is arranged in an arc-shaped slope; the top opening of the buffer guide cover (18) is arranged on the bottom side of the output end of the water injection pipe (7).

5. The pressure relief protection device for an ion membrane electrolyzer according to claim 1, characterized in that: The guide assembly comprises a limiting rail (19) and a limiting slide block (21); the limiting rail (19) is longitudinally fixedly mounted on the inside of a side of the water seal cylinder (1) close to the floating plate (8); the limiting slide block (21) is fixedly mounted on the outside of a side of the floating plate (8) close to the limiting rail (19); a limiting slide groove (20) is longitudinally embedded in the inside of the limiting rail (19); and the limiting slide block (21) is slidably engaged and mounted on the inside of one side of the limiting slide groove (20).

6. The ion membrane electrolyzer pressure relief protection device according to claim 5, characterized in that: A plurality of limit balls (22) are rotatably mounted on the inner wall of the limit slide groove (20) at equal intervals, and the outer walls of one side of the plurality of limit balls (22) are in contact with and fit against the outer surface of the corresponding side of the limit slide block (21).

7. The ion membrane electrolyzer pressure relief protection device according to claim 2, characterized in that: The liquid injection detection assembly comprises a reagent storage tank (23) and a piston cylinder (24), wherein the reagent storage tank (23) is fixedly mounted on the outside of one side of the water seal cylinder (1), and the piston cylinder (24) is invertedly mounted on the outside of one side of the top end of the water seal cylinder (1). A plurality of auxiliary rods (28) are longitudinally mounted at equal intervals at the edge of the bottom opening of the piston cylinder (24), and the bottom ends of the plurality of auxiliary rods (28) are fixedly mounted on the outside of one side of the top end of the water seal cylinder (1).

8. The pressure relief protection device for an ion membrane electrolyzer according to claim 7, characterized in that: A piston block (27) is installed in a sliding seal inside one side of the piston cylinder (24); a resisting rod (26) is longitudinally fixedly connected to the bottom end of the piston block (27); a connecting frame (25) is transversely fixedly connected to the bottom end of the resisting rod (26); and one side of the connecting frame (25) is fixedly connected to the outside of one side of the positioning plate (10).

9. The ion membrane electrolyzer pressure relief protection device according to claim 7, characterized in that: A liquid inlet pipe (29) is provided through one side of the top end of the piston cylinder (24), and the input end of the liquid inlet pipe (29) is fixedly installed in one side of the reagent storage tank (23). A one-way valve (30) is fixedly connected through one side of the liquid inlet pipe (29).

10. The ion membrane electrolyzer pressure relief protection device according to claim 9, characterized in that: A discharge pipe (31) is provided through the other side of the top end of the piston cylinder (24), the output end of the discharge pipe (31) is fixedly installed through the inside of one side of the water seal cylinder (1), a second check valve (32) is fixedly installed through the inside of one side of the discharge pipe (31), and a transparent observation window (33) is installed through the inside of one side of the water seal cylinder (1).

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