Safety management auxiliary device for chemical equipment

Abstract

The utility model relates to a kind of safety management auxiliary devices of chemical equipment, including sealing part, gas storage tank, piston, connecting pipe and standpipe, the sealing part is fixed in flange connection position, a sealing cavity that accommodates flange connection position is formed in the sealing part, inlet and outlet are formed on the gas storage tank, the inlet is communicated with the sealing cavity, the piston is slidably fitted in the inner chamber of the gas storage tank and located between inlet and outlet in the way of sliding along front and back direction, one end of the connecting pipe is fixedly connected with the outlet, the lower end of the standpipe is fixedly connected with the other end of the connecting pipe, the standpipe is made of transparent material. Since the above technical scheme is adopted, under the assistance of the safety management auxiliary device of chemical equipment in the utility model, the workload of the inspector can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, specifically to a safety management auxiliary device for chemical equipment. Background Technology

[0002] Gas pipelines are an essential component of chemical equipment. They are assembled from multiple steel pipes connected in sequence. The joints between adjacent pipe ends are often connected by flanges. However, in the chemical production process, the flange connection points on gas pipelines are high-risk areas for gas leaks.

[0003] In chemical production, safety management of chemical equipment is essential, and inspecting the flange connections of gas pipelines is a crucial component of this management. Inspecting the flange connections helps determine if gas leaks are present; if so, they must be repaired promptly to ensure the safe operation of chemical production.

[0004] Currently, during the inspection of flange connection locations, inspectors need to walk to each flange connection location of the gas pipeline in sequence and inspect the flange connection locations. However, there are a large number of flange connection locations in the gas pipeline of the chemical plant, and inspectors need to walk a long distance for each inspection. When inspecting flange connection locations using the existing method, the workload of inspectors is very large. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a safety management auxiliary device for chemical equipment, so as to solve the technical problem that the workload of inspectors is large when inspecting the flange connection positions of gas pipelines in the process of safety management of chemical equipment using existing methods.

[0006] This utility model is achieved through the following technical solution:

[0007] A safety management auxiliary device for chemical equipment includes a sealing part, a gas storage tank, a piston, a connecting pipe, and a vertical pipe. The sealing part is fixed to the flange connection position of the gas transmission pipeline, and a sealing cavity is formed inside the sealing part to accommodate the flange connection position. The gas storage tank has an inlet and an outlet, the inlet communicating with the sealing cavity. The piston is slidably fitted inside the gas storage tank in a back-and-forth direction and is located between the inlet and the outlet. One end of the connecting pipe is fixedly connected to the outlet, and the lower end of the vertical pipe is fixedly connected to the other end of the connecting pipe. The vertical pipe is made of a transparent material.

[0008] Furthermore, the sealing part includes a first mounting ring, a first circular ring, a cylinder, a first sealing ring, a second mounting ring, a second circular ring, a second sealing ring, a third sealing ring, and a fixing assembly. The first mounting ring, the first circular ring, the cylinder, and the first sealing ring are all fitted onto the steel pipe that is further forward of two adjacent steel pipes on the gas transmission pipeline. The annular hole of the first mounting ring is welded to the steel pipe that is further forward. The first circular ring presses the first sealing ring backward onto the first mounting ring. The front end of the cylinder is welded and fixed to the front side of the first circular ring. The cylinder accommodates the steel pipe that is further forward. The rear flange and the front flange of the rear steel pipe; the second mounting ring, the second circular ring and the second sealing ring are all fitted on the rearmost steel pipe of the two adjacent steel pipes on the gas transmission pipeline. The annular hole of the second mounting ring is sealed and welded to the rearmost steel pipe. The second circular ring presses the second sealing ring forward onto the second mounting ring. The second circular ring also presses the third sealing ring forward onto the rear end face of the cylinder. The fixing component is used to fix the cylinder and the second ring, and the fixing component is also used to pull the cylinder and the second ring in opposite directions.

[0009] Furthermore, the rear end of the cylinder extends outward to form an annular plate, and a plurality of first through holes are formed on the annular plate. A plurality of second through holes are formed on the second ring. The first through holes and the second through holes are arranged along the front-back direction, and the plurality of first through holes and the plurality of second through holes are arranged in a one-to-one correspondence.

[0010] The fixing assembly includes multiple bolts and multiple nuts. Each bolt corresponds one-to-one with a first through hole and a second through hole. The screw-in ends of the bolts pass through the corresponding first and second through holes sequentially. The bolt heads abut against the front side of the annular plate. The multiple nuts are screwed onto the bolts, abutting against the rear side of the second ring. With this structure, the fixing assembly can both securely connect the cylinder and the second ring and pull the cylinder and the second ring towards each other.

[0011] Furthermore, the inner cavity of the gas storage tank is cylindrical, the piston is coaxially arranged with the inner cavity, and the outer circumferential surface of the piston abuts against the side wall of the inner cavity; the outlet is located on the front side wall of the inner cavity, and the inlet is located on the rear side wall of the inner cavity.

[0012] Furthermore, it also includes a pushing assembly for pushing the piston backward.

[0013] Furthermore, a through hole is formed on the front wall of the gas storage tank. The through hole is arranged in the front-rear direction and connects to the inner cavity of the gas storage tank. An annular groove is formed on the side wall of the through hole, and the annular groove is arranged coaxially with the through hole.

[0014] The pushing assembly includes a fourth sealing ring and a round rod. The fourth sealing ring is disposed in the annular groove and is interference-fitted with the annular groove. The round rod is fixed on the piston and is slidably fitted in the through hole. The round rod is interference-fitted with the inner hole of the fourth sealing ring.

[0015] Furthermore, it also includes a baffle that closes the upper end of the vertical pipe and is slidably connected to the vertical pipe.

[0016] Furthermore, a fixing ring is fixedly provided inside the upper end of the vertical pipe, and the fixing ring is arranged coaxially with the vertical pipe. A guide rod is fixedly provided at the lower end of the baffle, and the guide rod is arranged coaxially with the fixing ring. The guide rod is slidably fitted in the annular hole of the fixing ring. A limiting plate is fixedly provided at the lower end of the guide rod, and the limiting plate is arranged coaxially with the guide rod.

[0017] The fixing ring has multiple circular holes, all of which penetrate the fixing ring in the vertical direction.

[0018] The beneficial effects of this utility model are as follows:

[0019] When installing the safety management auxiliary device for chemical equipment described in this utility model on a gas transmission pipeline, one such device is installed at each flange connection position on the gas transmission pipeline. The vertical pipes in each of these devices are placed in a fixed area. Inspectors only need to walk to this fixed area to observe the water levels in multiple vertical pipes, thus determining whether there are leaks at any flange connection position on the gas transmission pipeline. Inspectors do not need to walk to each flange connection position to inspect them, shortening their travel distance. With the assistance of this safety management auxiliary device, the workload of inspectors can be reduced.

[0020] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a preferred embodiment of the safety management auxiliary device for chemical equipment according to this utility model;

[0022] Figure 2 This is a top view of a preferred embodiment of the safety management auxiliary device for chemical equipment according to this utility model;

[0023] Figure 3 for Figure 2 Sectional view of AA;

[0024] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0025] Figure 5 for Figure 2 Sectional view of BB;

[0026] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0027] Figure 7 This is a front view of a preferred embodiment of the safety management auxiliary device for chemical equipment of this utility model;

[0028] Figure 8 for Figure 7 Sectional view of CC;

[0029] Figure 9 for Figure 8 Enlarged structural diagram at point C;

[0030] Figure 10 This is a schematic diagram of the combined structure of a vertical pipe, baffle, fixing ring, guide rod, limiting plate, support plate and float in another preferred embodiment of the safety management auxiliary device for chemical equipment of this utility model.

[0031] In the diagram: 1. Gas tank; 2. Piston; 3. Connecting pipe; 4. Vertical pipe; 5. First mounting ring; 6. First circular ring; 7. Cylinder; 8. First sealing ring; 9. Second mounting ring; 10. Second circular ring; 11. Second sealing ring; 12. Third sealing ring; 13. Connecting pipe; 14. Annular plate; 15. Bolt; 16. Nut; 17. Fourth sealing ring; 18. Round rod; 19. Baffle; 20. Fixing ring; 21. Guide rod; 22. Limiting plate; 23. Support plate; 24. Float. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0037] Example 1

[0038] Please see Figure 1-9 This utility model provides a technical solution: a safety management auxiliary device for chemical equipment, including a sealing part, a gas storage tank 1, a piston 2, a connecting pipe 3, and a vertical pipe 4. The sealing part is fixed to the flange connection position of the gas transmission pipeline, and a sealing cavity is formed within the sealing part to accommodate the flange connection position. The gas storage tank 1 has an inlet and an outlet, the inlet communicating with the sealing cavity. The piston 2 is slidably fitted within the inner cavity of the gas storage tank 1 and located between the inlet and the outlet. One end of the connecting pipe 3 is fixedly connected to the outlet, and the lower end of the vertical pipe 4 is fixedly connected to the other end of the connecting pipe 3. The vertical pipe 4 is made of a transparent material, specifically, it can be made of transparent glass or transparent plastic. Preferably, the vertical pipe 4 is vertically arranged. It can be understood that in other embodiments, the vertical pipe 4 may also have a certain inclination angle, with the lower end closed and the upper end open.

[0039] In the initial state, the piston 2 is located inside the gas storage tank 1 and between the inlet and the outlet. The piston 2 isolates the inner cavity of the gas storage tank 1 into two chambers arranged in front and behind. The chamber in front of the piston 2, the connecting pipe 3, and the vertical pipe 4 in the gas storage tank 1 all contain water. The water level in the vertical pipe 4 is between the upper and lower ends of the vertical pipe 4.

[0040] Before using the safety management auxiliary device for chemical equipment described in this utility model, a marking line is set on the outer surface of the vertical pipe 4, and the marking line is flush with the water level inside the vertical pipe 4. During subsequent use, inspectors can refer to the marking line to determine whether the water level inside the vertical pipe 4 has risen.

[0041] During the use of the safety management auxiliary device for chemical equipment described in this utility model, when a gas leak occurs at the flange connection, the leaking gas directly enters the sealed cavity. The pressure in the sealed cavity and the chamber located behind the piston 2 in the gas storage tank 1 gradually increases. As the gas leaks continuously at the flange connection, the piston 2 slides towards the outlet under pressure. The piston 2 pushes a portion of the water near the outlet into the connecting pipe 3, and a portion of the water in the connecting pipe 3 also enters the vertical pipe 4, causing the water level in the vertical pipe 4 to rise. Inspectors can determine whether there is a leak at the flange connection by observing whether the water level in the vertical pipe 4 has risen.

[0042] When installing the safety management auxiliary device for chemical equipment described in this utility model on a gas transmission pipeline, one such device is installed at each flange connection position on the gas transmission pipeline. The vertical pipes 4 in each device are placed in a fixed area. Inspectors only need to walk to this fixed area to observe the water surface in multiple vertical pipes 4, thus determining whether there is a leak at any flange connection position on the gas transmission pipeline. Inspectors do not need to walk to each flange connection position to inspect them, shortening their travel distance. With the assistance of the safety management auxiliary device, the workload of inspectors can be reduced.

[0043] In this embodiment: the sealing part includes a first mounting ring 5, a first circular ring 6, a cylinder 7, a first sealing ring 8, a second mounting ring 9, a second circular ring 10, a second sealing ring 11, a third sealing ring 12, and a fixing assembly. The first mounting ring 5, the first circular ring 6, the cylinder 7, and the first sealing ring 8 are all sleeved on the foremost steel pipe of two adjacent steel pipes on the gas transmission pipeline. The annular hole of the first mounting ring 5 is sealed and welded to the foremost steel pipe. The first circular ring 6 presses the first sealing ring 8 backward onto the first mounting ring 5. The front end of the cylinder 7 is welded and fixed to the front side of the first circular ring 6. The cylinder 7 accommodates the foremost steel pipe. The flange at the rear end of the pipe and the flange at the front end of the rearmost steel pipe; the second mounting ring 9, the second circular ring 10, and the second sealing ring 11 are all fitted onto the rearmost steel pipe of two adjacent steel pipes on the gas transmission pipeline. The annular hole of the second mounting ring 9 is welded to the rearmost steel pipe. The second circular ring 10 presses the second sealing ring 11 forward onto the second mounting ring 9, and the second circular ring 10 also presses the third sealing ring 12 forward onto the rear end face of the cylinder 7. The fixing component is used to fix the cylinder 7 and the second circular ring 10, and the fixing component is also used to pull the cylinder 7 and the second circular ring 10 towards each other. The first sealing ring 8, the second sealing ring 11, and the third sealing ring 12 are all made of rubber material.

[0044] The annular hole of the first mounting ring 5 is sealed and welded to the front steel pipe. Specifically, the annular hole of the first mounting ring 5 is connected to the outer circumferential surface of the front steel pipe by welding. After welding, gas cannot pass through the annular hole of the first mounting ring 5 and the outer circumferential surface of the front steel pipe.

[0045] The annular hole of the second mounting ring 9 is sealed and welded to the rearmost steel pipe. Specifically, the annular hole of the second mounting ring 9 is connected to the outer circumferential surface of the rearmost steel pipe by welding, and after welding, gas cannot pass through between the annular hole of the second mounting ring 9 and the outer circumferential surface of the rearmost steel pipe.

[0046] Before assembling the gas pipeline, the cylinder 7, the first mounting ring 5, the first sealing ring 8, the first ring 6, the second ring 10, the second sealing ring 11, and the second mounting ring 9 are fitted onto each steel pipe, arranged from back to front. Then, the annular hole of the first mounting ring 5 is sealed and welded to the rear of the steel pipe, and the annular hole of the second mounting ring 9 is sealed and welded to the front of the steel pipe. Finally, flanges are welded to both ends of the steel pipe.

[0047] During the assembly of the gas pipeline, multiple steel pipes with welded flanges are connected together sequentially from front to back. When connecting two adjacent steel pipes with welded flanges in the front-to-back direction, the third sealing ring 12 is fitted onto any one of the two adjacent steel pipes in the front-to-back direction, so that the flange at the rear end of the front steel pipe and the flange at the front end of the rear steel pipe are directly opposite each other. The front and rear steel pipes are then fixedly connected by the two flanges. Then, the cylinder 7 on the front steel pipe is slid backward. As the cylinder 7 slides, it drives the first ring 6 and the first sealing ring 8 to slide backward until the first ring 6 holds the first sealing ring 8 against the first mounting ring 5. The cylinder 7 accommodates the flange at the rear end of the front steel pipe and the flange at the front end of the rear steel pipe. Then, the second ring 10 on the rear steel pipe is slid forward, and the second ring 10 drives the second sealing ring 11 to slide forward until the second ring 10 presses the second sealing ring 11 forward onto the second mounting ring 9. The second ring 10 presses the third sealing ring 12 forward onto the rear end face of the cylinder 7. Then, the fixing assembly is fixedly connected to the cylinder 7 and the second ring 10, and the fixing assembly pulls the cylinder 7 and the second ring 10 towards each other. At this time, the first sealing ring 8 is pressed between the first ring 6 and the first mounting ring 5, the second sealing ring 11 is pressed between the second ring 10 and the second mounting ring 9, and the third sealing ring 12 is pressed between the cylinder 7 and the second ring 10. At this time, a sealing cavity that can accommodate the flange connection position can be formed in the sealing part.

[0048] In this embodiment, a connecting pipe 13 is also included. One end of the connecting pipe 13 is connected to the inlet, and the other end of the connecting pipe 13 is fixedly connected to the cylinder 7 and communicates with the inner cavity of the cylinder 7. The inlet thus connects to the sealed cavity.

[0049] In this embodiment: the rear end of the cylinder 7 extends outward to form an annular plate 14, and a plurality of first through holes are formed on the annular plate 14. A plurality of second through holes are formed on the second ring 10. The first through holes and the second through holes are arranged along the front-back direction, and the plurality of first through holes and the plurality of second through holes are arranged in a front-back one-to-one correspondence.

[0050] The fixing assembly includes multiple bolts 15 and multiple nuts 16. Each bolt 15 corresponds one-to-one with a first through hole and a second through hole. The screw-in end of each bolt 15 passes sequentially through the corresponding first through hole and the corresponding second through hole. The bolt heads of the multiple bolts 15 abut against the front side of the annular plate 14. Each nut 16 is screwed onto one of the multiple bolts 15, and the nut 16 abuts against the rear side of the second ring 10. With this structure, the fixing assembly can fixably connect the cylinder 7 and the second ring 10, and the fixing assembly can also pull the cylinder 7 and the second ring 10 towards each other.

[0051] When the flange connection needs to be inspected, the nuts 16 are rotated one by one on the bolts 15 to disengage each nut 16 from its corresponding bolt 15. Then, the bolts 15 are removed from their corresponding first and second through holes. This releases the fixing assembly from the cylinder 7 and the second ring 10. The cylinder 7 is then slid forward along the front steel pipe, and the second ring 10 is slid backward along the rear steel pipe, completely exposing the flange connection to facilitate repair.

[0052] After repairing the flange connection, the first ring 6 is slid backward along the forward steel pipe of the two adjacent steel pipes, so that the first sealing ring 8 is pressed between the first ring 6 and the first mounting ring 5. Then, the second ring 10 is slid forward along the rear steel pipe, so that the second sealing ring 11 is pressed between the second ring 10 and the second mounting ring 9, and the third sealing ring 12 is pressed between the cylinder 7 and the second ring 10. By rotating the second ring 10, the plurality of first perforations and the plurality of second perforations are aligned one by one, so that the plurality of... The screw-in end of the bolt 15 passes through the corresponding first through hole and the corresponding second through hole in sequence. The bolt heads of the plurality of bolts 15 abut against the front side of the annular plate 14. The plurality of nuts 16 are screwed onto the plurality of bolts 15 one by one. The nuts 16 abut against the rear side of the second ring 10. The fixing components pull the cylinder 7 and the second ring 10 towards each other to fix the cylinder 7 and the second ring 10. At this time, a sealing cavity is formed in the sealing part to accommodate the flange connection position. The safety management auxiliary device for chemical equipment described in this utility model can be used again.

[0053] In this embodiment: the inner cavity of the gas storage tank 1 is cylindrical, the piston 2 is coaxially arranged with the inner cavity, and the outer circumferential surface of the piston 2 abuts against the side wall of the inner cavity; the outlet is located on the front side wall of the inner cavity, and the inlet is located on the rear side wall of the inner cavity. With this structure, the piston 2 can slide within the inner cavity of the gas storage tank 1 in a sliding manner in the front-back direction and is located between the inlet and the outlet.

[0054] In this embodiment, a pushing assembly is also included, which is used to push the piston 2 backward.

[0055] After releasing the fixing assembly from the cylinder 7 and the second ring 10, and completely exposing the flange connection position, the piston 2 is pushed backward by the pushing assembly. Under the suction force generated during the movement of the piston 2, a portion of the water in the connecting pipe 3 enters the chamber of the gas storage tank 1 located in front of the piston 2, and a portion of the water in the vertical pipe 4 enters the connecting pipe 3, causing the water level in the vertical pipe 4 to drop, so that the water level can be realigned with the marking line.

[0056] In this embodiment: a through hole is formed on the front wall of the gas storage tank 1. The through hole is arranged in the front-rear direction and connects to the inner cavity of the gas storage tank 1. An annular groove is formed on the side wall of the through hole, and the annular groove is arranged coaxially with the through hole.

[0057] The pushing assembly includes a fourth sealing ring 17 and a round rod 18. The fourth sealing ring 17 is disposed in the annular groove and is interference-fitted with the annular groove. The round rod 18 is fixed to the piston 2 and is slidably fitted in the through hole. The round rod 18 is interference-fitted with the inner hole of the fourth sealing ring 17. The fourth sealing ring 17 is made of rubber material.

[0058] After repairing the connection between the two flanges, when it is necessary to push the piston 2 backward, the round rod 18 is pushed backward directly. The round rod 18 can then drive the piston 2 to slide backward in the inner cavity of the gas storage tank 1, and the pushing assembly can thus push the piston 2 backward.

[0059] Because the fourth sealing ring 17 is interference-fitted with the annular groove, and the round rod 18 is interference-fitted with the inner hole of the fourth sealing ring 17, the fourth sealing ring 17 can seal the gap between the round rod 18 and the through hole, so that water in the part of the inner cavity of the gas tank 1 located in front of the piston 2 is not easily leaked out from between the round rod 18 and the through hole.

[0060] In this embodiment, a baffle 19 is also included. The baffle 19 closes the upper end of the vertical pipe 4 and is slidably connected to the vertical pipe 4.

[0061] In the initial state, the baffle 19 closes the upper opening of the vertical pipe 4, which can reduce the amount of water evaporation in the vertical pipe 4 and reduce the possibility of external debris entering the interior of the vertical pipe 4.

[0062] When the water level rises in the vertical pipe 4, the air pressure in the part of the vertical pipe 4 located above the water level increases. After the pressure in the vertical pipe 4 increases to a certain extent, the air above the water level in the vertical pipe 4 pushes the baffle 19 to move upward, and the air above the water level in the vertical pipe 4 can be discharged through the upper end of the vertical pipe 4.

[0063] In this embodiment: a fixing ring 20 is fixedly provided inside the upper end of the vertical pipe 4, and the fixing ring 20 is coaxially arranged with the vertical pipe 4; a guide rod 21 is fixedly provided at the lower end of the baffle 19, and the guide rod 21 is coaxially arranged with the fixing ring 20; the guide rod 21 is slidably fitted in the annular hole of the fixing ring 20; a limiting plate 22 is fixedly provided at the lower end of the guide rod 21, and the limiting plate 22 is coaxially arranged with the guide rod 21.

[0064] The fixing ring 20 has multiple circular holes, all of which penetrate the fixing ring 20 in the vertical direction.

[0065] Since the guide rod 21 is slidably fitted into the annular hole of the fixing ring 20, the baffle 19 can be slidably connected to the vertical pipe 4 in sequence. When the baffle 19 moves upward, the air in the vertical pipe 4 can be discharged sequentially through the circular hole and the upper end of the vertical pipe 4. The limiting plate 22 can limit the guide rod 21, preventing the guide rod 21 from coming out of the fixing ring 20 upward, thereby preventing the baffle 19 from falling off the upper end of the vertical rod.

[0066] In this embodiment: a support plate 23 is provided at the lower end of the vertical pipe 4, and the vertical pipe 4 is fixed to the middle of the upper side of the support plate 23. The support plate 23 can stably support the vertical pipe 4, so that the vertical pipe 4 remains in a nearly vertical state.

[0067] Example 2

[0068] The difference between this embodiment and Embodiment 1 is that the vertical tube 4 is also provided with a float 24, while the rest is the same as in Embodiment 1.

[0069] For details, please refer to Figure 10It also includes a float 24, which is slidably disposed inside the vertical tube 4 and can float in the water. The float 24 can be a bright color such as red or yellow. The float 24 can be a foam block.

[0070] In this embodiment, when marking lines are set on the outer surface of the vertical tube 4, the marking lines are made flush with the upper or lower end of the float 24.

[0071] When the safety management auxiliary device for chemical equipment described in this utility model is used, the float 24 floats on the water surface inside the vertical pipe 4. The float 24 can rise with the rise of the water surface. By observing whether the float 24 rises, it can be determined whether the water surface has risen. The position of the float 24 inside the vertical pipe 4 is more prominent than the position of the transparent water surface inside the vertical pipe 4, making it easier to determine whether the water surface has risen.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A safety management auxiliary device for chemical equipment, characterized in that: The device includes a sealing part, a gas storage tank (1), a piston (2), a connecting pipe (3), and a vertical pipe (4). The sealing part is fixed to the flange connection position of the gas transmission pipeline. A sealing cavity is formed inside the sealing part to accommodate the flange connection position. An inlet and an outlet are formed on the gas storage tank (1). The inlet communicates with the sealing cavity. The piston (2) is slidably fitted in the inner cavity of the gas storage tank (1) and located between the inlet and the outlet. One end of the connecting pipe (3) is fixedly connected to the outlet. The lower end of the vertical pipe (4) is fixedly connected to the other end of the connecting pipe (3). The vertical pipe (4) is made of transparent material.

2. The safety management auxiliary device for chemical equipment according to claim 1, characterized in that: The sealing part includes a first mounting ring (5), a first circular ring (6), a cylinder (7), a first sealing ring (8), a second mounting ring (9), a second circular ring (10), a second sealing ring (11), a third sealing ring (12), and a fixing assembly. The first mounting ring (5), the first circular ring (6), the cylinder (7), and the first sealing ring (8) are all fitted onto the steel pipe that is further forward of two adjacent steel pipes on the gas transmission pipeline. The annular hole of the first mounting ring (5) is sealed and welded to the steel pipe that is further forward. The first circular ring (6) presses the first sealing ring (8) backward onto the first mounting ring (5). The front end of the cylinder (7) is welded and fixed to the front side of the first circular ring (6). The cylinder (7) accommodates the steel pipe that is further forward. The flange at the rear end of the steel pipe and the flange at the front end of the rearmost steel pipe; the second mounting ring (9), the second ring (10) and the second sealing ring (11) are all fitted on the rearmost steel pipe of the two adjacent steel pipes on the gas transmission pipeline. The annular hole of the second mounting ring (9) is sealed and welded to the rearmost steel pipe. The second ring (10) presses the second sealing ring (11) forward onto the second mounting ring (9). The second ring (10) also presses the third sealing ring (12) forward onto the rear end face of the cylinder (7). The fixing component is used to fix the cylinder (7) and the second ring (10). The fixing component is also used to pull the cylinder (7) and the second ring (10) in opposite directions.

3. The safety management auxiliary device for chemical equipment according to claim 2, characterized in that: The cylinder (7) extends outward at its rear end to form an annular plate (14). Multiple first perforations are formed on the annular plate (14), and multiple second perforations are formed on the second ring (10). The first perforations and the second perforations are arranged along the front-back direction, and the multiple first perforations and the multiple second perforations are arranged in a one-to-one correspondence. The fixing assembly includes multiple bolts (15) and multiple nuts (16). Each bolt (15) corresponds to a first through hole and a second through hole. The screw-in end of each bolt (15) passes through the corresponding first through hole and the corresponding second through hole in sequence. The bolt heads of the multiple bolts (15) abut against the front side of the annular plate (14). Each nut (16) is screwed onto the multiple bolts (15) in a corresponding manner. The nut (16) abuts against the rear side of the second ring (10). With this structure, the fixing assembly can fix the cylinder (7) and the second ring (10) together. The fixing assembly can also pull the cylinder (7) and the second ring (10) in opposite directions.

4. The safety management auxiliary device for chemical equipment according to claim 1, characterized in that: The inner cavity of the gas storage tank (1) is cylindrical, the piston (2) is coaxially arranged with the inner cavity, and the outer circumferential surface of the piston (2) abuts against the side wall of the inner cavity; the outlet is located on the front side wall of the inner cavity, and the inlet is located on the rear side wall of the inner cavity.

5. The safety management auxiliary device for chemical equipment according to claim 1, characterized in that: It also includes a pushing assembly for pushing the piston (2) backward.

6. The safety management auxiliary device for chemical equipment according to claim 5, characterized in that: A through hole is formed on the front wall of the gas storage tank (1). The through hole is arranged in the front-back direction and connects to the inner cavity of the gas storage tank (1). An annular groove is formed on the side wall of the through hole. The annular groove is arranged coaxially with the through hole. The pushing assembly includes a fourth sealing ring (17) and a round rod (18). The fourth sealing ring (17) is disposed in the annular groove and is interference-fitted with the annular groove. The round rod (18) is fixed on the piston (2) and is slidably fitted in the through hole. The round rod (18) is interference-fitted with the inner hole of the fourth sealing ring (17).

7. The safety management auxiliary device for chemical equipment according to claim 1, characterized in that: It also includes a baffle (19), which closes the upper end of the vertical pipe (4) and is slidably connected to the vertical pipe (4).

8. The safety management auxiliary device for chemical equipment according to claim 7, characterized in that: A fixing ring (20) is fixedly provided inside the upper end of the vertical pipe (4). The fixing ring (20) is coaxial with the vertical pipe (4). A guide rod (21) is fixedly provided at the lower end of the baffle (19). The guide rod (21) is coaxial with the fixing ring (20). The guide rod (21) is slidably fitted in the annular hole of the fixing ring (20). A limiting plate (22) is fixedly provided at the lower end of the guide rod (21). The limiting plate (22) is coaxial with the guide rod (21). The fixing ring (20) has a plurality of circular holes, all of which penetrate the fixing ring (20) in the vertical direction.

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