Treatment system suitable for leakage of acid-base storage tank

Abstract

The utility model discloses a treatment system suitable for leakage of an acid-base storage tank. The treatment system comprises a high-level tank, a low-level tank, a standby tank, a reversing valve I, a reversing valve II, a corrosion-resistant pump II, a corrosion-resistant pump III, an alarm device I and an alarm device II, the high-level tank and the standby tank are arranged side by side in a left-right spaced mode, and the low-level tank is arranged on the ground below the high-level tank. The reversing valve I and the reversing valve II are two-position three-way reversing valves, a discharge port of the high-position tank is communicated with a liquid inlet P of the reversing valve I, a working port B of the reversing valve I is communicated with an inlet of the low-position tank, and an outlet of the low-position tank is communicated with a working port B of the reversing valve II; a working port A of the reversing valve I is communicated with an inlet of the standby tank, and an outlet of the standby tank is communicated with a working port A of the reversing valve II; a liquid return port T of the reversing valve II is communicated with an inlet of the high-level tank, and an alarm device I and an alarm device II are arranged in the high-level tank. According to the utility model, the leakage phenomenon of the high-level tank can be conveniently found in time, and loss and pollution are reduced.

Description

Technical Field

[0001] This utility model relates to the field of acid and alkali storage tank technology, and specifically to a system for handling leaks in acid and alkali storage tanks. Background Technology

[0002] With the rapid development of the chemical industry, acids and alkalis, as important chemical raw materials or intermediate products, have wide applications. For example, in petrochemical and fine chemical industries, large quantities of acids and alkalis are needed for chemical reactions and product synthesis. Acid and alkali storage tank systems have become key equipment for storing and supplying acids and alkalis. Against the backdrop of increasing environmental awareness, the requirements for the storage, use, and discharge of acids and alkalis are becoming more stringent. Acid and alkali storage tank systems need to have better sealing and leak-proof functions to prevent acid and alkali leaks from polluting the environment.

[0003] Existing acid and alkali storage tank systems generally suffer from the following defects and deficiencies: 1) Long-term acid and alkali corrosion of the tank material can lead to thinning, cracking, and even perforation, affecting the tank's strength and sealing performance. Additionally, valves, pipelines, pumps, and other equipment are constantly exposed to corrosive media, making them prone to wear, corrosion, and aging. For example, decreased valve sealing performance can lead to media leakage, and pipeline corrosion and cracking can cause leaks or explosions. 2) Safety protection facilities in the tank area (such as dikes, guardrails, and warning signs) may be improperly installed or damaged, making it impossible to quickly isolate leaked substances in emergencies. Furthermore, the safety monitoring system is inadequate, failing to monitor the safety conditions inside and outside the tank area in a timely manner and unable to provide early warnings and timely handling of abnormal situations. 3) Some acid and alkali storage tank systems lack effective treatment structures for discharged liquids, resulting in environmental pollution when highly acidic or alkaline liquids are discharged. Moreover, some acid and alkali storage tanks leave liquid residue on the discharge side after the outlet valve is closed, posing a safety hazard, and highly volatile acids can also pollute the atmosphere.

[0004] Therefore, how to recover and process the remaining acid and alkali when an acid and alkali storage tank leaks has become an urgent problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a system for handling leaks in acid and alkali storage tanks. By using alarm device I, alarm device II, pressure gauge and flow meter in combination, it is easy to detect leaks in high-level tanks in a timely manner, so that the remaining acid and alkali liquid in the high-level tank can be transferred quickly and effectively. This not only reduces losses and pollution, but also facilitates the maintenance and inspection of the emptied high-level tank.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides a system for handling leaks in acid and alkali storage tanks, the innovation of which lies in: including a high-level tank, a low-level tank, a backup tank, a reversing valve I, a reversing valve II, a corrosion-resistant pump II, a corrosion-resistant pump III, an alarm device I, and an alarm device II; the high-level tank and the backup tank are arranged side-by-side with a gap between them, and a low-level tank is also provided on the ground below the high-level tank; both reversing valve I and reversing valve II are two-position three-way reversing valves, and the vent of the high-level tank is connected to the inlet P of reversing valve I through a discharge pipe, and the working port B of reversing valve I is connected to the... The inlet of the low-level tank is connected, and the outlet of the low-level tank is connected to the working port B of the reversing valve II via a pipeline; the working port A of the reversing valve I is connected to the inlet of the standby tank via a corrosion-resistant pump II via a pipeline, and the outlet of the standby tank is connected to the working port A of the reversing valve II via a pipeline; the return port T of the reversing valve II is connected to the inlet of the high-level tank via a corrosion-resistant pump III via an inlet pipe, and alarm device I and alarm device II are installed in the high-level tank. Alarm device I and alarm device II are used to determine whether the high-level tank is leaking, and the acid or alkali solution in the high-level tank is transferred to the standby tank or the low-level tank through the reversing valve I.

[0007] Preferably, the lowest level of the high-level tank is higher than the highest level of the low-level tank, which facilitates the transfer of acid and alkali solutions in the high-level tank to the low-level tank by gravity through the discharge pipe and the working port B of the reversing valve I.

[0008] Preferably, the system further includes a suction pipe, a corrosion-resistant pump I, an output pipe, a flow meter, and a pressure gauge. The outlet of the high-level tank is located slightly above its right side. Inside the high-level tank, near its right inner wall, a suction pipe is vertically installed. The lower end of the suction pipe extends vertically downward to the inner bottom surface of the high-level tank, and the upper end extends vertically upward along the right inner wall of the high-level tank, exiting the high-level tank through a sealed outlet. The suction pipe is fixedly connected to the right inner wall of the high-level tank via a reinforcing rib. The portion extending out of the high-level tank is also connected to a corrosion-resistant pump I, which pumps the acid and alkali solutions from the high-level tank out through the suction pipe. A pressure gauge and a flow meter are sequentially and intermittently connected to the suction pipe relative to the outlet end of the corrosion-resistant pump I. The corrosion-resistant pump I is electrically connected to the pressure gauge, the flow meter, alarm device I, and alarm device II, respectively, thereby monitoring the output of the acid and alkali solutions pumped out through the suction pipe through the cooperation of the pressure gauge and the flow meter.

[0009] Preferably, the liquid extraction pipe, liquid inlet pipe, liquid outlet pipe, output pipe, reversing valve I, and reversing valve II are all made of corrosion-resistant materials.

[0010] Preferably, the inlet of the high-level tank is located slightly above its left side, and the end of the inlet pipe away from the corrosion-resistant pump III extends through the inlet seal of the high-level tank into the interior of the high-level tank, and then extends vertically downward along the left inner sidewall of the high-level tank to the inner bottom surface of the high-level tank; the inlet pipe is fixedly connected to the left inner sidewall of the high-level tank by a rib plate, and does not interfere with the operation of alarm device I and alarm device II respectively.

[0011] Preferably, the lowest horizontal position of the spare tank coincides with the lowest horizontal position of the high-level tank.

[0012] Preferably, the suction pipe does not interfere with the operation of alarm device I and alarm device II, and alarm device I includes alarm box I, alarm I, battery I, spring I, upper electrode plate I, lower electrode plate I, elastic rope I, and float I; a hollow rectangular alarm box I is also provided on the right side of the upper surface of the high-level tank, and the lower surface of alarm box I is open and fixedly connected to the upper surface of the high-level tank at a corresponding position; inside alarm box I, upper electrode plate I and lower electrode plate I are horizontally parallel and spaced vertically, and the lower electrode plate I is fixedly set at a corresponding position on the upper surface of the high-level tank; sliders I are provided at the left and right ends of upper electrode plate I, and vertical rails I matching slider I are provided on the left and right inner sidewalls of alarm box I at positions relative to slider I; each slider I and rail I is made of insulating material, and through the cooperation of slider I and rail I, the upper electrode plate A vertically sliding connection is made between the upper electrode plate I and the inner top surface of the alarm box I; a spring I is also vertically installed between the upper surface of the upper electrode plate I and the inner top surface of the alarm box I, and the upper and lower ends of the spring I are respectively fixedly connected to the alarm box I and the upper electrode plate I; a storage battery I is installed on the left outer side of the alarm box I, and an alarm I is also installed on its upper surface. The storage battery I, the upper electrode plate I, the lower electrode plate I, and the alarm I form a circuit through wires; an elastic rope I is also vertically fixed at the middle position of the lower surface of the upper electrode plate I. The lower end of the elastic rope I passes vertically downward through the lower electrode plate I and the inner top surface of the high-level tank, and extends into the interior of the high-level tank, and is fixedly connected to the upper surface of the float plate I horizontally installed in the high-level tank; the elastic rope I and the float plate I are both made of corrosion-resistant material, and through the cooperation of the float plate I, the elastic rope I, the upper electrode plate I, the lower electrode plate I, and the spring I, the liquid level of the acid and alkali liquid in the high-level tank is monitored and alarmed.

[0013] Preferably, the lower limit position of the float plate I is located at the middle position inside the high-level tank, so as to monitor for leakage when the acid or alkali solution in the high-level tank exceeds two-thirds.

[0014] Preferably, the alarm device II includes an alarm box II, an alarm II, a battery II, a spring II, an upper electrode plate II, a lower electrode plate II, an elastic rope II, and a float II. A hollow rectangular alarm box II is also provided on the left side of the upper surface of the high-level tank, and the lower surface of the alarm box II is open and fixedly connected to the corresponding position of the upper surface of the high-level tank. Inside the alarm box II, upper electrode plates II and lower electrode plates II are horizontally parallel and spaced vertically, and the lower electrode plate II is fixedly installed at the corresponding position on the upper surface of the high-level tank. Slider plates II are provided at the left and right ends of the upper electrode plate II, and vertical slide rails II matching the slider plates II are provided on the left and right inner sidewalls of the alarm box II at positions relative to the slider plates II. Each slider plate II and slide rail II is made of insulating material, and through the cooperation of the slider plate II and slide rail II, the upper electrode plate II slides vertically up and down with the alarm box II. The connection is as follows: A spring II is vertically installed between the upper surface of the upper electrode plate II and the inner top surface of the alarm box II, and the upper and lower ends of the spring II are fixedly connected to the alarm box II and the upper electrode plate II, respectively; A storage battery II is installed on the left outer side of the alarm box II, and an alarm II is installed on its upper surface. The storage battery II, the upper electrode plate II, the lower electrode plate II, and the alarm II form a circuit through wires; An elastic rope II is vertically fixed at the middle position of the lower surface of the upper electrode plate II. The lower end of the elastic rope II passes vertically downward through the lower electrode plate II and the inner top surface of the high-level tank, and extends into the interior of the high-level tank, where it is fixedly connected to the upper surface of the float plate II horizontally installed inside the high-level tank; The elastic rope II and the float plate II are both made of corrosion-resistant material, and through the cooperation of the float plate II, the elastic rope II, the upper electrode plate II, the lower electrode plate II, and the spring II, the liquid level of the acid and alkali liquid in the high-level tank is monitored and alarmed.

[0015] Preferably, the lower limit position of the float plate II is located inside the high-level tank near its inner bottom surface, thereby enabling leakage monitoring when the acid or alkali solution in the high-level tank is less than half full.

[0016] The beneficial effects of this utility model are:

[0017] (1) This utility model uses alarm device I, alarm device II, pressure gauge and flow meter together to facilitate timely detection of leakage in high-level tanks, thereby quickly and effectively transferring the remaining acid and alkali liquid in the high-level tanks, which not only reduces losses and pollution, but also facilitates maintenance and inspection of the emptied high-level tanks.

[0018] (2) By using the combination of reversing valve I and reversing valve II, this utility model can transfer the remaining acid and alkali liquid in the high-level tank to the low-level tank when the spare tank is full, thereby avoiding the phenomenon that there is still acid and alkali liquid residue in the high-level tank. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a system for handling leaks in acid and alkali storage tanks according to the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the high-level tank of this utility model.

[0022] Among them, 1-High-level tank; 2-Corrosion-resistant pump I; 3-Pressure gauge; 4-Flow meter; 5-Output pipe; 6-Reversing valve I; 7-Low-level tank; 8-Corrosion-resistant pump II; 9-Reversing valve II; 10-Spare tank; 11-Corrosion-resistant pump III; 12-Alarm box I; 13-Alarm I; 14-Battery I; 15-Spring I; 16-Upper electrode plate I; 17-Lower electrode plate I; 18-Elastic rope I; 19-Float plate I; 20-Liquid extraction pipe; 21-Alarm box II; 22-Alarm II; 23-Battery II; 24-Spring II; 25-Upper electrode plate II; 26-Lower electrode plate II; 27-Elastic rope II; 28-Float plate II; 29-Liquid inlet pipe; 30-Discharge pipe. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below through specific embodiments.

[0024] This utility model discloses a system for handling leaks in acid and alkali storage tanks, comprising a high-level tank 1, a low-level tank 7, a backup tank 10, a reversing valve I 6, a reversing valve II 9, a corrosion-resistant pump II 8, a corrosion-resistant pump III 11, an alarm device I, and an alarm device II; the specific structure is as follows. Figure 1 , Figure 2As shown, the high-level tank 1 and the spare tank 10 are arranged side by side with an interval between them, and a low-level tank 7 is also provided on the ground below the high-level tank 1; both the reversing valve I6 and the reversing valve II9 are two-position three-way reversing valves, and the vent of the high-level tank 1 is connected to the inlet P of the reversing valve I6 through the discharge pipe 30. The working port B of the reversing valve I6 is connected to the inlet of the low-level tank 7 through a pipeline, and the outlet of the low-level tank 7 is connected to the working port B of the reversing valve II9 through a pipeline; the working port A of the reversing valve I6 is connected to the corrosion-resistant pump II. 8 is connected to the inlet of the spare tank 10 through a pipeline, and the outlet of the spare tank 10 is connected to the working port A of the reversing valve II 9 through a pipeline; the return port T of the reversing valve II 9 is connected to the inlet of the high-level tank 1 through the corrosion-resistant pump III 11 and the inlet pipe 29, and the high-level tank 1 is equipped with alarm device I and alarm device II, and then the alarm device I and alarm device II are used to determine whether the high-level tank 1 has leaked, and the acid and alkali in the high-level tank 1 are transferred to the spare tank 10 or the low-level tank 7 through the reversing valve I 6.

[0025] The lowest level of the high-level tank 1 is higher than the highest level of the low-level tank 7, which facilitates the transfer of acid and alkali solutions in the high-level tank 1 to the low-level tank 7 by gravity through the discharge pipe 30 and the working port B of the reversing valve I6; the lowest level of the spare tank 10 is consistent with the lowest level of the high-level tank 1.

[0026] The outlet of the high-level tank 1 of this utility model is located slightly above its right side, and a liquid extraction pipe 20 is vertically installed inside the high-level tank 1 near its right inner side wall. Figure 1 , Figure 2 As shown, the lower end of the extraction pipe 20 extends vertically downward to the inner bottom surface of the high-level tank 1, and its upper end extends vertically upward along the right inner side wall of the high-level tank 1, and extends out of the high-level tank 1 through the outlet seal of the high-level tank 1; the extraction pipe 20 is fixedly connected to the right inner side wall of the high-level tank 1 by a stiffener, and a corrosion-resistant pump I2 is also connected to the part of it extending out of the high-level tank 1, so that the acid and alkali solutions in the high-level tank 1 are pumped out through the extraction pipe 20 by the corrosion-resistant pump I2; a pressure gauge 3 and a flow meter 4 are also connected sequentially and at intervals on the extraction pipe 20 relative to the outlet end of the corrosion-resistant pump I2, and the corrosion-resistant pump I2 is electrically connected to the pressure gauge 3, the flow meter 4, the alarm device I and the alarm device II respectively, so that the output of the acid and alkali solutions extracted through the extraction pipe 20 is monitored by the cooperation of the pressure gauge 3 and the flow meter 4. Among them, the liquid extraction pipe 20, the liquid inlet pipe 29, the liquid outlet pipe 30, the output pipe 5, the reversing valve I 6, and the reversing valve II 9 are all made of corrosion-resistant materials.

[0027] like Figure 1 , Figure 2As shown, the inlet of the high-level tank 1 is located on its upper left side, and the end of the inlet pipe 29 away from the corrosion-resistant pump Ⅲ11 extends through the inlet seal of the high-level tank 1 into the interior of the high-level tank 1, and then extends vertically downward along the left inner side wall of the high-level tank 1 to the inner bottom surface of the high-level tank 1; the inlet pipe 29 is fixedly connected to the left inner side wall of the high-level tank 1 through the stiffener, and does not interfere with the operation of the alarm device Ⅰ and the alarm device Ⅱ respectively.

[0028] The liquid extraction tube 20 of this utility model does not interfere with the operation of alarm device I and alarm device II, and alarm device I includes alarm box I12, alarm I13, storage battery I14, spring I15, upper electrode plate I16, lower electrode plate I17, elastic rope I18 and float plate I19; Figure 1 , Figure 2 As shown, a hollow rectangular alarm box I12 is provided on the right side of the upper surface of the high-level tank 1. The lower surface of the alarm box I12 is open and is fixedly connected to the corresponding position of the upper surface of the high-level tank 1. Inside the alarm box I12, there are horizontally parallel upper electrode plates I16 and lower electrode plates I17 that match it. The lower electrode plate I17 is fixedly set at the corresponding position on the upper surface of the high-level tank 1. There are sliders I at the left and right ends of the upper electrode plate I16. There are also vertical slide rails I that match the sliders I at the positions of the sliders I on the left and right inner sidewalls of the alarm box I12. Each slider I and slide rail I is made of insulating material. Through the cooperation of the sliders I and slide rails I, the upper electrode plate I16 is vertically slidably connected to the alarm box I12.

[0029] like Figure 1 , Figure 2 As shown, a spring I15 is vertically installed between the upper surface of the upper electrode plate I16 and the inner top surface of the alarm box I12, and the upper and lower ends of the spring I15 are fixedly connected to the alarm box I12 and the upper electrode plate I16, respectively; a storage battery I14 is installed on the left outer side of the alarm box I12, and an alarm I13 is installed on its upper surface. The storage battery I14, the upper electrode plate I16, the lower electrode plate I17, and the alarm I13 form a circuit through wires; a spring I15 is also installed in the middle of the lower surface of the upper electrode plate I16. A vertically fixed elastic rope I18 is installed, with its lower end passing vertically downwards through the lower electrode plate I17 and the inner top surface of the high-level tank 1, extending into the interior of the high-level tank 1 and fixedly connected to the upper surface of the horizontally installed float plate I19 inside the high-level tank 1. Both the elastic rope I18 and the float plate I19 are made of corrosion-resistant material, and through the cooperation of the float plate I19, the elastic rope I18, the upper electrode plate I16, the lower electrode plate I17, and the spring I15, the liquid level monitoring and alarm functions are performed for the acid and alkali solutions in the high-level tank 1. The lower limit position of the float plate I19 is located at the middle position inside the high-level tank 1, thus detecting leakage when the acid and alkali solutions in the high-level tank 1 exceed two-thirds of the capacity.

[0030] The alarm device II of this utility model includes an alarm box II21, an alarm II22, a storage battery II23, a spring II24, an upper electrode plate II25, a lower electrode plate II26, an elastic rope II27, and a float II28; as shown Figure 1 , Figure 2 As shown, a hollow rectangular alarm box II 21 is provided on the left side of the upper surface of the high-level tank 1. The lower surface of the alarm box II 21 is open and is fixedly connected to the corresponding position of the upper surface of the high-level tank 1. Inside the alarm box II 21, there are also horizontally parallel upper electrode plates II 25 and lower electrode plates II 26 that match it. The lower electrode plate II 26 is fixedly set at the corresponding position of the upper surface of the high-level tank 1. There are also sliders II at the left and right ends of the upper electrode plate II 25. There are also vertical slide rails II that match the sliders II at the positions of the left and right inner sidewalls of the alarm box II 21 relative to the sliders II. Each slider II and slide rail II is made of insulating material. Through the cooperation of the sliders II and slide rails II, the upper electrode plate II 25 is vertically slidably connected to the alarm box II 21.

[0031] like Figure 1 , Figure 2 As shown, a spring II24 is vertically installed between the upper surface of the upper electrode plate II25 and the inner top surface of the alarm box II21, and the upper and lower ends of the spring II24 are fixedly connected to the alarm box II21 and the upper electrode plate II25, respectively; a storage battery II23 is installed on the left outer side of the alarm box II21, and an alarm II22 is installed on its upper surface. The storage battery II23, the upper electrode plate II25, the lower electrode plate II26, and the alarm II22 form a circuit through wires; at the middle position of the lower surface of the upper electrode plate II25... An elastic rope II27 is also vertically fixed, with its lower end passing vertically downwards through the lower electrode plate II26 and the inner top surface of the high-level tank 1, extending into the interior of the high-level tank 1, and fixedly connected to the upper surface of the float plate II28 horizontally installed inside the high-level tank 1. Both the elastic rope II27 and the float plate II28 are made of corrosion-resistant material, and through the cooperation of the float plate II28, the elastic rope II27, the upper electrode plate II25, the lower electrode plate II26, and the spring II24, the liquid level monitoring and alarm functions are performed for the acid and alkali solutions in the high-level tank 1. The lower limit position of the float plate II28 is located inside the high-level tank 1 near its inner bottom surface, thus detecting leaks when the acid and alkali solutions in the high-level tank 1 are less than half full.

[0032] The working principle of this utility model:

[0033] (1) The high-level tank 1 is in working condition (i.e., outputting acid and alkali solutions).

[0034] (1.1) When the acid and alkali liquid storage volume in the high-level tank 1 exceeds two-thirds in the initial state, the output volume of the acid and alkali liquid can be monitored by the cooperation of pressure gauge 3 and flow meter 4. At this time, float plate I 19 and float plate II 28 will drop synchronously with the liquid level. If float plate I 19 reaches the lower limit before the set time, it indicates that the high-level tank 1 is leaking. At this time, the upper electrode plate I 16 contacts the lower electrode plate I 17, and the alarm I 13 will sound an alarm.

[0035] (1.2) When the acid and alkali liquid storage volume in the high-level tank 1 is less than half in the initial state, the output volume of the acid and alkali liquid can be monitored by the cooperation of pressure gauge 3 and flow meter 4. At this time, alarm component I does not work, and float plate II 28 drops synchronously with the liquid level. If float plate II 28 reaches the lower limit before the set time, it indicates that the high-level tank 1 has leaked. At this time, the upper electrode plate II 25 contacts the lower electrode plate II 26, and alarm II 22 sounds an alarm.

[0036] (2) The high-level tank 1 is in a non-working state (i.e., it does not output acid or alkali solutions).

[0037] (2.1) When the acid and alkali liquid storage in the high-level tank 1 exceeds two-thirds in the initial state, if the float plate I19 drops with the liquid level, it indicates that the high-level tank 1 is leaking; when the upper electrode plate I16 contacts the lower electrode plate I17, the alarm I13 will sound an alarm.

[0038] (2.2) When the acid and alkali liquid storage in the high-level tank 1 is less than half full in the initial state, the alarm component I will not work. If the float plate II 28 drops with the liquid level, it indicates that the high-level tank 1 is leaking. When the upper electrode plate II 25 contacts the lower electrode plate II 26, the alarm II 22 will sound an alarm.

[0039] (3) When alarm I13 or alarm II22 sounds, the valve core of reversing valve I6 moves to the left, so that the inlet P of reversing valve I6 is connected to its working port A. At this time, the acid and alkali in the high-level tank 1 can be transferred to the standby tank 10 by the corrosion-resistant pump II8. If the standby tank 10 is full and there is still acid and alkali in the high-level tank 1, the valve core of reversing valve I6 moves to the right, so that the inlet P of reversing valve I6 is connected to its working port B. At this time, the remaining acid and alkali in the high-level tank 1 is transferred to the low-level tank 7 by gravity until the acid and alkali in the high-level tank 1 is completely transferred. Then the high-level tank 1 that has been emptied can be maintained and repaired.

[0040] (4) After the maintenance and repair of the high-level tank 1 is completed, the valve core of the reversing valve II9 is ​​moved upward so that the return port T of the reversing valve II9 is ​​connected to its working port A. At this time, the acid and alkali liquid in the spare tank 10 can be pumped into the high-level tank 1 through the corrosion-resistant pump III11. Then the valve core of the reversing valve II9 is ​​moved downward so that the return port T of the reversing valve II9 is ​​connected to its working port B. At this time, the acid and alkali liquid in the low-level tank 7 can be pumped into the high-level tank 1 through the corrosion-resistant pump III11.

[0041] The beneficial effects of this utility model are:

[0042] (1) By using alarm device I, alarm device II, pressure gauge 3 and flow meter 4 together, this utility model can facilitate the timely detection of leakage in high-level tank 1, thereby quickly and effectively transferring the remaining acid and alkali liquid in high-level tank 1, which not only reduces losses and pollution, but also facilitates the maintenance and inspection of the emptied high-level tank 1.

[0043] (2) By using the combination of reversing valve I6 and reversing valve II9, this utility model can transfer the remaining acid and alkali liquid in the high-level tank 1 to the low-level tank 7 when the spare tank 10 is full, thereby avoiding the phenomenon that there is still acid and alkali liquid residue in the high-level tank 1.

[0044] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully recorded in the technical requirements.

Claims

1. A system for handling leaks in acid and alkali storage tanks, characterized in that: The system includes a high-level tank, a low-level tank, a spare tank, a reversing valve I, a reversing valve II, a corrosion-resistant pump II, a corrosion-resistant pump III, an alarm device I, and an alarm device II. The high-level tank and the spare tank are arranged side-by-side with a gap between them, and a low-level tank is also located on the ground below the high-level tank. Both reversing valve I and reversing valve II are two-position three-way reversing valves. The drain port of the high-level tank is connected to the inlet P of reversing valve I through a discharge pipe. The working port B of reversing valve I is connected to the inlet of the low-level tank through a pipeline, and the outlet of the low-level tank is connected to the reversing valve II through a pipeline. The working port B of valve II is connected; the working port A of the reversing valve I is connected to the inlet of the spare tank via a pipeline through corrosion-resistant pump II, and the outlet of the spare tank is connected to the working port A of the reversing valve II via a pipeline; the return port T of the reversing valve II is connected to the inlet of the high-level tank via a pipeline through corrosion-resistant pump III, and alarm device I and alarm device II are installed in the high-level tank. Alarm device I and alarm device II are used to determine whether the high-level tank is leaking, and the acid and alkali solutions in the high-level tank are transferred to the spare tank or the low-level tank through the reversing valve I.

2. The system for handling leaks in acid and alkali storage tanks according to claim 1, characterized in that: The lowest level of the high-level tank is higher than the highest level of the low-level tank, which facilitates the transfer of acid and alkali solutions in the high-level tank to the low-level tank by gravity through the discharge pipe and the working port B of the reversing valve I.

3. The system for handling leaks in acid and alkali storage tanks according to claim 1, characterized in that: It also includes a suction pipe, a corrosion-resistant pump I, an output pipe, a flow meter, and a pressure gauge. The outlet of the high-level tank is located slightly above its right side. Inside the high-level tank, near its right inner wall, a suction pipe is vertically installed. The lower end of the suction pipe extends vertically downward to the inner bottom surface of the high-level tank, and the upper end extends vertically upward along the right inner wall of the high-level tank, exiting the high-level tank through a sealed outlet. The suction pipe is fixedly connected to the right inner wall of the high-level tank via a reinforcing plate. The portion of the suction pipe extending out of the high-level tank is also connected to a corrosion-resistant pump I, which pumps the acid and alkali solutions in the high-level tank out through the suction pipe. A pressure gauge and a flow meter are sequentially and intermittently connected to the suction pipe relative to the outlet end of the corrosion-resistant pump I. The corrosion-resistant pump I is electrically connected to the pressure gauge, the flow meter, alarm device I, and alarm device II, respectively, thereby monitoring the output of the acid and alkali solutions pumped out through the suction pipe through the cooperation of the pressure gauge and the flow meter.

4. The system for handling leaks in acid and alkali storage tanks according to claim 3, characterized in that: The liquid extraction pipe, liquid inlet pipe, liquid outlet pipe, output pipe, reversing valve I, and reversing valve II are all made of corrosion-resistant materials.

5. The system for handling leaks in acid and alkali storage tanks according to claim 1, characterized in that: The inlet of the high-level tank is located on its upper left side, and the end of the inlet pipe away from the corrosion-resistant pump III extends through the inlet seal of the high-level tank into the interior of the high-level tank, and then extends vertically downward along the left inner side wall of the high-level tank to the inner bottom surface of the high-level tank; the inlet pipe is fixedly connected to the left inner side wall of the high-level tank by a rib plate, and does not interfere with the operation of alarm device I and alarm device II respectively.

6. A system for handling leaks in acid and alkali storage tanks according to claim 1, characterized in that: The lowest level of the spare tank is the same as the lowest level of the high-level tank.

7. A system for handling leaks in acid and alkali storage tanks according to claim 3, characterized in that: The suction pipes do not interfere with the operation of alarm device I and alarm device II, respectively. Alarm device I includes an alarm box I, an alarm I, a battery I, a spring I, an upper electrode plate I, a lower electrode plate I, an elastic rope I, and a float I. A hollow rectangular alarm box I is also provided on the right side of the upper surface of the high-level tank, with an open lower surface that is fixedly connected to the corresponding position on the upper surface of the high-level tank. Inside the alarm box I, upper and lower electrode plates I are horizontally parallel and spaced vertically, with the lower electrode plate I fixedly positioned on the corresponding position on the upper surface of the high-level tank. Slider plates I are provided at both ends of the upper electrode plate I, and vertically aligned with the slider I on the inner left and right sides of the alarm box I, corresponding to the slider I, are provided with sliding rails I. Each slider I and sliding rail I is made of insulating material, and through the cooperation of the slider I and the sliding rail, the upper electrode plate I... The alarm box I is vertically slidably connected up and down; a spring I is vertically installed between the upper surface of the upper electrode plate I and the inner top surface of the alarm box I, and the upper and lower ends of the spring I are fixedly connected to the alarm box I and the upper electrode plate I, respectively; a storage battery I is installed on the left outer side of the alarm box I, and an alarm I is installed on its upper surface. The storage battery I, the upper electrode plate I, the lower electrode plate I, and the alarm I form a circuit through wires; an elastic rope I is vertically fixed at the middle position of the lower surface of the upper electrode plate I, and the lower end of the elastic rope I passes vertically downward through the lower electrode plate I and the inner top surface of the high-level tank, and extends into the interior of the high-level tank, and is fixedly connected to the upper surface of the float plate I horizontally installed in the high-level tank; the elastic rope I and the float plate I are both made of corrosion-resistant material, and through the cooperation of the float plate I, the elastic rope I, the upper electrode plate I, the lower electrode plate I, and the spring I, the liquid level of the acid and alkali liquid in the high-level tank is monitored and alarmed.

8. A system for handling leaks in acid and alkali storage tanks according to claim 7, characterized in that: The lower limit position of the float plate I is located in the middle of the interior of the high-level tank, thereby enabling leakage monitoring when the acid and alkali solutions in the high-level tank exceed two-thirds of their capacity.

9. A system for handling leaks in acid and alkali storage tanks according to claim 7, characterized in that: The alarm device II includes an alarm box II, an alarm II, a battery II, a spring II, an upper electrode plate II, a lower electrode plate II, an elastic rope II, and a float II. A hollow rectangular alarm box II is also provided on the left side of the upper surface of the elevated tank, with its lower surface open and fixedly connected to the corresponding position on the upper surface of the elevated tank. Inside the alarm box II, upper and lower electrode plates II are horizontally parallel and spaced vertically, with the lower electrode plate II fixedly positioned on the corresponding position on the upper surface of the elevated tank. Slider plates II are provided at both ends of the upper electrode plate II, and vertically aligned slide rails II are provided on the left and right inner sidewalls of the alarm box II relative to the slider plates II. Each slider II and slide rail II is made of insulating material, and through the cooperation of the slider II and slide rail II, the upper electrode plate II is vertically slidably connected to the alarm box II. A spring II is vertically installed between the upper surface of the upper electrode plate II and the inner top surface of the alarm box II, and the upper and lower ends of the spring II are fixedly connected to the alarm box II and the upper electrode plate II, respectively. A battery II is installed on the left outer side of the alarm box II, and an alarm II is installed on its upper surface. The battery II, the upper electrode plate II, the lower electrode plate II, and the alarm II form a circuit through wires. An elastic rope II is vertically fixed in the middle of the lower surface of the upper electrode plate II. The lower end of the elastic rope II passes vertically downward through the lower electrode plate II and the inner top surface of the high-level tank, and extends into the interior of the high-level tank, where it is fixedly connected to the upper surface of the float plate II, which is horizontally installed inside the high-level tank. The elastic rope II and the float plate II are both made of corrosion-resistant material, and through the cooperation of the float plate II, the elastic rope II, the upper electrode plate II, the lower electrode plate II, and the spring II, the liquid level of the acid and alkali liquid in the high-level tank is monitored and alarmed.

10. A system for handling leaks in acid and alkali storage tanks according to claim 9, characterized in that: The lower limit position of the float plate II is located inside the high-level tank near its inner bottom surface, thereby enabling leakage monitoring when the acid and alkali solutions in the high-level tank are less than half full.

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