Hydrochloric acid steam leakproof structure for hydrochloric acid tank

Abstract

The utility model relates to the technical field of leakage prevention, and discloses a hydrochloric acid steam leakage prevention structure for a hydrochloric acid tank, which comprises a storage tank and a steam guide pipe, a leakage prevention mechanism is arranged at the outer end of a steam joint pipe and comprises a fixing ring mounted on the top surface of the storage tank, and a corrugated pipe is fixedly connected to the top end of the fixing ring. A movable ring is fixedly connected to the top end of the corrugated pipe, containing grooves are formed in the two ends of the interior of the corrugated pipe, reciprocating air cylinders are arranged in the containing grooves, and the two ends of each reciprocating air cylinder are connected to the position between the fixed ring and the movable ring; according to the double-protection gas leakage monitoring device, leakage can be monitored in real time, an alarm is given, meanwhile, the pump body is automatically started to convey neutralizing liquid and chemically neutralize leaked steam, and the safety is improved through double protection.

Description

Technical Field

[0001] This utility model relates to the field of leakage prevention technology, specifically to a structure for preventing hydrochloric acid vapor leakage when used in hydrochloric acid tanks. Background Technology

[0002] Hydrochloric acid tanks are specialized corrosion-resistant containers used to store liquid hydrochloric acid or hydrochloric acid solutions. They are typically made of corrosion-resistant materials such as fiberglass, polyethylene, and plastic-lined steel, and are widely used in industries such as chemical, pharmaceutical, and metallurgy. For example, they are used to temporarily store hydrochloric acid raw materials in chemical production, to store hydrochloric acid for pickling in metal processing, or to store hydrochloric acid solutions for adjusting pH values ​​in wastewater treatment.

[0003] Hydrochloric acid storage tanks are generally equipped with steam exhaust pipes at the top, and hydrochloric acid gas is prone to leakage at the interface. This not only wastes raw materials but may also cause equipment corrosion and health hazards to operators. Therefore, we propose a hydrochloric acid vapor leak-proof structure for use in hydrochloric acid tanks. Utility Model Content

[0004] The purpose of this invention is to provide a hydrochloric acid vapor leak-proof structure for use in hydrochloric acid tanks, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydrochloric acid vapor leak-proof structure for use in hydrochloric acid tanks, comprising a storage tank and a steam conduit, wherein a steam connector pipe is embedded on one side of the top of the storage tank, and both the steam connector pipe and the steam conduit interface are fixedly connected to flanges connected by bolts.

[0006] The outer end of the steam connector pipe is equipped with a leak-proof mechanism, which includes a fixed ring installed on the top surface of the storage tank. A corrugated pipe is fixedly connected to the top of the fixed ring, and a movable ring is fixedly connected to the top of the corrugated pipe. Both ends of the corrugated pipe have receiving grooves. A reciprocating cylinder is installed inside the receiving groove, with its two ends respectively connected to the fixed ring and the movable ring. A neutralization tank is fixedly connected to the side of the storage tank near the leak-proof mechanism. A pump body is fixedly connected to the lower end of the outer wall of the neutralization tank. A gas delivery pipe extending into the corrugated pipe is fixedly connected to the output end of the pump body. An expansion airbag arranged in a ring shape is fixedly connected to the inner wall of the movable ring. A sealing strip is provided on the inner wall of the expansion airbag. An air pump is fixedly connected to the other side of the top of the movable ring. The air pump is connected to the expansion airbag through a gas guide pipe.

[0007] Preferably, an inlet pipe is embedded on the other side of the top of the storage tank, and an outlet pipe is embedded at the lower end of the side wall of the storage tank.

[0008] Preferably, a pressure relief pipe is embedded in the fixing ring, and the input end of the pressure relief pipe is connected to the bellows.

[0009] Preferably, a gas sensor is fixedly connected to the inner ring wall of the moving ring near the lower end of the expansion airbag, and a buzzer is provided on the top of the moving ring near the gas sensor, and the gas sensor is electrically connected to the buzzer and the pump body.

[0010] Preferably, the corrugated pipe is made of thickness-reinforced polytetrafluoroethylene.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the anti-leakage mechanism forms a physical seal by expanding the airbag and sealing the outer wall of the conduit (in conjunction with the reciprocating cylinder to drive the bellows to extend and retract to adjust the position), which specifically solves the flange connection leakage problem. By linking the gas sensor and the buzzer, the leakage can be monitored in real time and alarmed. At the same time, the pump body is automatically started to deliver neutralizing liquid to chemically neutralize the leaked vapor, thus improving safety with dual protection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the overall structure of the leak-proof mechanism of this utility model;

[0014] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0015] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B.

[0016] In the diagram: 1. Storage tank; 11. Inlet pipe; 12. Outlet pipe; 13. Steam connector pipe; 14. Steam conduit; 15. Flange; 2. Leakage prevention mechanism; 201. Receiving tank; 21. Fixed ring; 22. Moving ring; 23. Bellows; 24. Reciprocating cylinder; 25. Neutralization tank; 26. Pump body; 27. Gas delivery pipe; 28. Pressure relief pipe; 29. ​​Air pump; 210. Expansion bladder; 211. Sealing strip; 212. Buzzer; 213. Gas sensor. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 The present invention provides the following technical solution:

[0019] Example 1: A hydrochloric acid vapor leak-proof structure for use in hydrochloric acid tanks includes a storage tank 1 and a steam conduit 14. A steam connector pipe 13 is embedded on one side of the top of the storage tank 1. Both the steam connector pipe 13 and the steam conduit 14 are fixedly connected to flanges 15 connected by bolts at their interface ends. An inlet pipe 11 is embedded on the other side of the top of the storage tank 1, and an outlet pipe 12 is embedded at the lower end of the side wall of the storage tank 1.

[0020] In use, hydrochloric acid is injected into the storage tank 1 through the inlet pipe 11 and the valve of the inlet pipe 11 is closed. The outlet pipe 12 is used for subsequent hydrochloric acid extraction and is kept closed under normal circumstances. Then, the flange 15 of the steam pipe 14 is aligned with the flange 15 of the steam connector pipe 13 at the top of the storage tank 1, and the bolts are tightened evenly to ensure that the sealing surfaces fit together and form a steam outlet channel.

[0021] Example 2: The technical solution of this example, which differs from Example 1, includes: a leak-proof mechanism 2 is provided at the outer end of the steam connector pipe 13. The leak-proof mechanism 2 includes a fixed ring 21 installed on the top surface of the storage tank 1. A bellows 23 is fixedly connected to the top of the fixed ring 21, and a movable ring 22 is fixedly connected to the top of the bellows 23. Both ends of the bellows 23 have receiving grooves 201. A reciprocating cylinder 24 is provided inside the receiving groove 201, with its two ends respectively connected between the fixed ring 21 and the movable ring 22. A neutralization tank 25 is fixedly connected to the side of the storage tank 1 near the leak-proof mechanism 2. A pump body 26 is fixedly connected to the lower end of the outer wall of the neutralization tank 25. A gas delivery pipe 27 extending into the bellows 23 is fixedly connected to the output end of the pump body 26. The inner ring wall of the movable ring 22 is fixedly connected to... An expansion airbag 210 is arranged in a ring shape. The inner wall of the expansion airbag 210 is provided with a sealing strip 211. An air pump 29 is fixedly connected to the other side of the top of the moving ring 22. The air pump 29 is connected to the expansion airbag 210 through an air guide tube. A pressure relief pipe 28 is embedded in the fixed ring 21, and the input end of the pressure relief pipe 28 is connected to the bellows 23. A gas sensor 213 is fixedly connected to the inner ring wall of the moving ring 22 near the lower end of the expansion airbag 210. A buzzer 212 is provided on the top of the moving ring 22 near the gas sensor 213. The gas sensor 213 is electrically connected to the buzzer 212 and the pump body 26. The bellows 23 is made of thick-reinforced polytetrafluoroethylene (PTFE), which can increase the rigidity of the bellows 23 and allow it to expand and contract.

[0022] In use, after the steam connector pipe 13 is connected to the flange of the steam conduit 14, the reciprocating cylinder 24 is started, which drives the bellows 23 to extend and retract, so that the moving ring 22 is located outside the flange 15. Then the air pump 29 is started, and air is injected into the expansion bladder 210 through the air guide pipe. After the expansion bladder 210 expands, it drives the sealing strip 211 to tightly fit against the outer wall of the steam conduit 14, forming the first seal. If there is a slight leak at the flange connection, the gas sensor 213 detects hydrochloric acid vapor and immediately triggers the buzzer 212 to alarm, and automatically starts the pump body 26. The pump body 26 draws neutralizing liquid, such as weak alkaline mist, from the neutralization tank 25 and sends it into the bellows 23 through the gas delivery pipe 27 to neutralize the leaked hydrochloric acid vapor. Excess gas is safely discharged through the pressure relief pipe 28, which can reduce the harm caused by the direct discharge of leaked vapor. Then the reciprocating cylinder 24 is reset, the steam connector pipe 13 is closed, and maintenance personnel intervene for inspection and maintenance.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrochloric acid vapor leak-proof structure for use in hydrochloric acid tanks, comprising a storage tank (1) and a steam conduit (14), wherein a steam connector pipe (13) is embedded on one side of the top of the storage tank (1), and the interface ends of the steam connector pipe (13) and the steam conduit (14) are fixedly connected to a flange (15) connected by bolts. Its features are: The outer end of the steam connector pipe (13) is provided with a leak-proof mechanism (2). The leak-proof mechanism (2) includes a fixed ring (21) installed on the top surface of the storage tank (1). A corrugated pipe (23) is fixedly connected to the top of the fixed ring (21). A movable ring (22) is fixedly connected to the top of the corrugated pipe (23). Both ends of the corrugated pipe (23) are provided with receiving grooves (201). A reciprocating cylinder (24) is provided inside the receiving groove (201) with its two ends connected to the fixed ring (21) and the movable ring (22) respectively. The storage tank (1) is close to the leak-proof mechanism. A neutralization tank (25) is fixedly connected to one side of the structure (2). A pump body (26) is fixedly connected to the lower end of the outer wall of the neutralization tank (25). A gas supply pipe (27) extending into the bellows (23) is fixedly connected to the output end of the pump body (26). An expansion airbag (210) arranged in a ring shape is fixedly connected to the inner ring wall of the moving ring (22). A sealing strip (211) is provided on the inner wall of the expansion airbag (210). An air pump (29) is fixedly connected to the other side of the top of the moving ring (22). The air pump (29) is connected to the expansion airbag (210) through a gas guide pipe.

2. The hydrochloric acid vapor leak-proof structure for use in hydrochloric acid tanks according to claim 1, characterized in that: The storage tank (1) has an inlet pipe (11) embedded on the other side of its top, and an outlet pipe (12) embedded at the lower end of its side wall.

3. The hydrochloric acid vapor leak-proof structure for use in hydrochloric acid tanks according to claim 1, characterized in that: The fixing ring (21) is embedded with a pressure relief pipe (28), and the input end of the pressure relief pipe (28) is connected to the bellows (23).

4. The hydrochloric acid vapor leak-proof structure for use in hydrochloric acid tanks according to claim 1, characterized in that: A gas sensor (213) is fixedly connected to the inner ring wall of the movable ring (22) near the lower end of the expansion airbag (210). A buzzer (212) is provided on the top of the movable ring (22) near the gas sensor (213). The gas sensor (213) is electrically connected to the buzzer (212) and the pump body (26).

5. A hydrochloric acid vapor leak-proof structure for use in hydrochloric acid tanks according to claim 1, characterized in that: The corrugated pipe (23) is made of thick-reinforced polytetrafluoroethylene (PTFE).

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