A liquid storage system with unblocking function

Abstract

This utility model belongs to the field of pipeline cleaning, and specifically relates to a liquid storage system with unclogging function. To facilitate unclogging, this utility model proposes a liquid storage system with unclogging function. The system includes a liquid storage container, a level transmitter, and a backflushing device. The liquid storage container is connected to the level transmitter via a liquid pressure-conducting pipeline. The liquid pressure-conducting pipeline is equipped with a first control valve and a second control valve. The backflushing device includes a cleaning agent container and a backflushing pipeline. Both ends of the backflushing pipeline are connected to the cleaning agent container and the hydraulic pressure-conducting pipeline, respectively. The connection point between the backflushing pipeline and the hydraulic pressure-conducting pipeline is located between the first control valve and the second control valve. The backflushing pipeline also includes a liquid pump and a first cleaning control valve. The addition of the backflushing device allows for backflushing of the first control valve of the liquid pressure-conducting pipeline and the connection point between the hydraulic pressure-conducting pipeline and the liquid storage container, thereby facilitating unclogging.

Description

Technical Field

[0001] This utility model belongs to the field of clean pipelines, and in particular relates to a liquid storage system with unblocking function. Background Technology

[0002] In the gathering and transportation station, the liquid storage containers need to store liquids with high hydrogen sulfide content, and the liquid level transmitter is used to measure the liquid level height in the storage containers.

[0003] like Figure 1 As shown, the liquid storage system includes a liquid storage container 1 and a liquid level transmitter 2. The upper part of the liquid storage container 1 is connected to the "-" pressure chamber of the liquid level transmitter 2 through a gas pressure guiding line, and the lower part of the liquid storage container 1 is connected to the "+" pressure chamber of the liquid level transmitter 2 through a liquid pressure guiding line.

[0004] The gas pressure guiding line is connected to the gas in the liquid storage container 1, and the liquid pressure guiding line is connected to the liquid in the liquid storage container 1. When the liquid level changes, the pressure difference between the "+" pressure chamber and the "-" pressure chamber changes, thereby indicating the change in liquid level.

[0005] A gas pressure-conducting pipeline control valve 14 is installed on the gas pressure-conducting pipeline, and a liquid pressure-conducting pipeline control valve (i.e., the first control valve 15) is installed on the liquid pressure-conducting pipeline. The liquid storage container 1 is equipped with a first pressure gauge 6, a liquid inlet pipeline, a liquid outlet pipeline, a vent valve (i.e., the first vent valve 9), a safety valve 10, and a gas filling pipeline. A liquid inlet pipeline control valve 8 is installed on the liquid inlet pipeline, a liquid outlet pipeline control valve 12 is installed on the liquid outlet pipeline, and a gas filling pipeline control valve 11 is installed on the gas filling pipeline. By controlling the on / off state of different control valves, the functions of liquid filling, gas filling, or liquid draining can be realized.

[0006] During prolonged use, elemental sulfur will precipitate from the liquid, clogging the liquid pressure guiding pipeline, especially the control valve and the connection between the liquid pressure guiding pipeline and the storage container. This prevents the liquid pressure in storage container 1 from being transmitted to the "+" pressure chamber, leading to distorted liquid level and affecting the normal production of high-sulfur gas wells. After workers discover the distorted liquid level, the liquid pressure guiding pipeline needs to be disassembled and repaired to unblock it, which is a labor-intensive process. Furthermore, because the liquid contains hydrogen sulfide, it is acidic and corrosive, posing a high risk during maintenance. Utility Model Content

[0007] The purpose of this invention is to provide a liquid storage system with unblocking function to solve the technical problems of large workload and high risk in unblocking existing liquid storage systems.

[0008] To achieve the above objectives, the technical solution of the liquid storage system with unblocking function provided by this utility model is as follows:

[0009] A liquid storage system with unblocking function includes a liquid storage container and a liquid level transmitter. The upper and lower parts of the liquid storage container are connected to the liquid level transmitter through a gas pressure-conducting line and a liquid pressure-conducting line, respectively. A first control valve for the liquid pressure-conducting line is provided on the liquid pressure-conducting line. The system also includes a backflushing device and a second control valve for the liquid pressure-conducting line.

[0010] The backwashing device includes a cleaning agent container and a backwash line. One end of the backwash line is connected to the cleaning agent container, and the other end is connected to the hydraulic pressure guiding line. The connection between the backwash line and the hydraulic pressure guiding line is located between the first control valve and the second control valve of the hydraulic pressure guiding line.

[0011] The backflushing line is also equipped with a liquid pump and a first cleaning control valve.

[0012] Furthermore, the liquid storage system with unblocking function also includes a return pipeline, one end of which is connected to the cleaning agent container and the other end is connected to the hydraulic pressure guiding pipeline. The connection between the return pipeline and the hydraulic pressure guiding pipeline is located between the first control valve and the second control valve of the hydraulic pressure guiding pipeline. A second cleaning control valve is provided on the return pipeline.

[0013] Furthermore, a four-way valve is provided on the liquid pressure guiding line between the first control valve and the second control valve of the liquid pressure guiding line, and the return line and backflushing line are respectively connected to different ports of the four-way valve.

[0014] Furthermore, the liquid storage system with unblocking function also includes a residual liquid collection pipeline and a residual liquid collection container. One end of the residual liquid collection pipeline is connected to the residual liquid collection container, and the other end is connected to the hydraulic pressure guiding pipeline. The connection between the residual liquid collection pipeline and the hydraulic pressure guiding pipeline is located between the first control valve and the second control valve of the hydraulic pressure guiding pipeline. A residual liquid collection control valve is provided on the residual liquid collection pipeline.

[0015] Furthermore, a pressure gauge is installed on the liquid pressure guiding line to detect the pressure of the section of the liquid pressure guiding line located between the first control valve and the second control valve of the liquid pressure guiding line.

[0016] Furthermore, the liquid storage system with unblocking function also includes a residual liquid collection pipeline and a residual liquid collection container. One end of the residual liquid collection pipeline is connected to the residual liquid collection container, and the other end is connected to the backflushing pipeline. The connection between the residual liquid collection pipeline and the backflushing pipeline is located between the first cleaning control valve and the connection between the backflushing pipeline and the hydraulic pressure guiding pipeline. A residual liquid collection control valve is provided on the residual liquid collection pipeline.

[0017] Furthermore, the liquid storage system with unblocking function also includes a pressure testing line and a pressure gauge. One end of the pressure testing line is connected to the pressure gauge, and the other end is connected to the hydraulic pressure guiding line. The connection between the pressure testing line and the hydraulic pressure guiding line is located between the first control valve and the second control valve of the liquid pressure guiding line. The pressure gauge is used to detect the pressure of the portion of the liquid pressure guiding line located between the first control valve and the second control valve of the liquid pressure guiding line.

[0018] Furthermore, the liquid storage system with unblocking function also includes a return line, one end of which is connected to the cleaning agent container and the other end is connected to the pressure testing line. A second cleaning control valve is installed on the return line.

[0019] Furthermore, a pressure gauge control valve is installed on the pressure testing line, and the connection between the return line and the pressure testing line is located between the pressure gauge control valve and the pressure gauge.

[0020] Furthermore, both the residual liquid collection container and the cleaning agent container are equipped with vent valves.

[0021] The beneficial effects of the liquid storage system with unclogging function provided by this utility model are as follows: This utility model is an improved invention. The core difference between this utility model and the prior art is that a backflushing device is added to this utility model.

[0022] Based on the above key differences, when the liquid pressure guiding lines of a liquid storage system (hereinafter referred to as the liquid storage system) with unblocking function are blocked, the following backflushing operation can be used to unblock them:

[0023] Close the second control valve of the liquid pressure guiding line, open the first control valve and the first cleaning control valve of the liquid pressure guiding line, and the liquid pump will work so that the cleaning agent in the cleaning agent container enters the storage container after passing through the first control valve of the liquid pressure guiding line. This cleans and unblocks the first control valve of the liquid pressure guiding line and the connection between the liquid pressure guiding line and the storage container, making repairs convenient.

[0024] In this invention, the reason for closing the second control valve of the liquid pressure-conducting pipeline is to prevent high-pressure cleaning agent from entering the level transmitter, thereby protecting the level transmitter from damage. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an existing liquid storage system;

[0026] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the liquid storage system with unblocking function of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure used in Example 1 to determine whether a liquid pressure-conducting pipeline is blocked;

[0028] Figure 4 This is a schematic diagram of the first step in the sewage discharge operation of the liquid pressure guiding pipeline in Example 1.

[0029] Figure 5 This is a schematic diagram of the second step in the sewage discharge operation of the liquid pressure guiding pipeline in Example 1.

[0030] Figure 6 This is a schematic diagram of the first step in the liquid pressure-conducting pipeline cleaning operation in Application Example 1;

[0031] Figure 7 This is a schematic diagram of the second step in the liquid pressure-conducting pipeline cleaning operation of Example 1.

[0032] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of the liquid storage system with unblocking function of this utility model;

[0033] Figure 9 This is a schematic diagram of the structure of Embodiment 3 of the liquid storage system with unblocking function of this utility model;

[0034] Figure 10 This is a schematic diagram of the structure of embodiment 4 of the liquid storage system with unblocking function of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Liquid storage container; 2. Liquid level transmitter; 3. Four-way valve; 4. Residual liquid collection container; 5. Cleaning agent container; 6. First pressure gauge; 7. Second pressure gauge; 8. Inlet line control valve; 9. First vent valve; 10. Safety valve; 11. Gas filling line control valve; 12. Drain line control valve; 13. Connecting flange; 14. Gas pressure guiding line control valve; 15. Liquid pressure guiding line first control valve; 16. Second pressure gauge control valve; 17. Redundant control valve; 18. Residual liquid collection control valve; 19. Second vent valve; 20. First cleaning control valve; 21. Liquid pump; 22. Second cleaning control valve; 23. Third vent valve; 24. Liquid pressure guiding line second control valve. Detailed Implementation

[0037] To address the problems in the background technology, the core inventive concept of this utility model is to add a backflushing device to backflush the first control valve of the liquid pressure guiding pipeline and the connection between the hydraulic pressure guiding pipeline and the liquid storage container, thereby achieving unblocking and facilitating repair.

[0038] The present invention will be further described in detail below with reference to embodiments of a liquid storage system with unblocking function.

[0039] like Figures 2-10As shown in the diagram, as a basic implementation, the liquid storage system (hereinafter referred to as the liquid storage system) with unblocking function includes a liquid storage container 1 and a liquid level transmitter 2. The upper and lower parts of the liquid storage container 1 are connected to the liquid level transmitter 2 through gas pressure guiding lines and liquid pressure guiding lines, respectively. A gas pressure guiding line control valve 14 is provided on the gas pressure guiding line, and a liquid pressure guiding line first control valve 15 is provided on the liquid pressure guiding line. The liquid storage container 1 is equipped with a first pressure gauge 6, a liquid inlet line, a liquid outlet line, a first vent valve 9, a safety valve 10, and a gas filling line. A liquid inlet line control valve 8 is provided on the liquid inlet line, a liquid outlet line control valve 12 is provided on the liquid outlet line, and a gas filling line control valve 11 is provided on the gas filling line. By controlling the on / off state of different control valves, the functions of liquid filling, gas filling, or liquid draining can be realized.

[0040] The liquid storage system also includes a backwashing device, and a second control valve 24 for the liquid pressure guiding line is also provided on the liquid pressure guiding line.

[0041] The backwashing device includes a cleaning agent container 5 and a backwashing pipeline. One end of the backwashing pipeline is connected to the cleaning agent container 5, and the other end is connected to the hydraulic pressure guiding pipeline. The connection between the backwashing pipeline and the hydraulic pressure guiding pipeline is located between the first control valve 15 and the second control valve 24 of the hydraulic pressure guiding pipeline. The backwashing pipeline is also equipped with a liquid pump 21 and a first cleaning control valve 20.

[0042] When the corresponding pressure-conducting pipeline is divided into multiple sections, the adjacent sections can be connected by a flange 13; each container (including the liquid storage container 1, the cleaning agent container 5 and the residual liquid collection container 4 mentioned below) can be a conventional container such as a tank or box.

[0043] In a preferred embodiment, the cleaning agent container 5 is provided with a third vent valve 23, and this embodiment constitutes... Figure 8 Example 2 is shown.

[0044] When unclogging the liquid storage system in Example 2, a backflushing operation is first performed, referring to... Figure 7 On the basis of, such as Figure 8 As shown, the second control valve 24 of the liquid pressure guiding line is closed, and the first control valve 15 and the first cleaning control valve 20 of the liquid pressure guiding line are opened. The liquid pump 21 works so that the cleaning agent in the cleaning agent container 5 enters the liquid storage container 1 after passing through the first control valve 15 of the liquid pressure guiding line. This cleans and unblocks the first control valve 15 of the liquid pressure guiding line and the connection between the liquid pressure guiding line and the liquid storage container 1, making repairs convenient.

[0045] At the same time, the third vent valve 23 can be opened to connect the cleaning agent container 5 with the atmosphere, thereby balancing the pressure inside the cleaning agent container 5.

[0046] In other embodiments, the third vent valve 23 may be omitted, and the dosing port of the cleaning agent container 5 for adding the agent may be opened directly.

[0047] After the cleaning agent enters the storage container 1, the drain line control valve 12 can be opened to allow the cleaning agent to enter the subsequent treatment system through the drain line.

[0048] The cleaning agent is alkaline to dissolve elemental sulfur. This cleaning agent is commonly used for desulfurization; therefore, this invention does not include any improvements to the cleaning agent, and will not be elaborated upon here.

[0049] In this invention, the reason for closing the second control valve 24 of the liquid pressure guiding line is to prevent the high-pressure cleaning agent from entering the level transmitter 2 and to prevent the pressure of the high-pressure cleaning agent from exceeding the range of the level transmitter 2, thereby protecting the level transmitter 2 from damage.

[0050] To better alleviate congestion, refer to Figures 2-10 As shown, in a preferred embodiment, the liquid storage system further includes a return line, one end of which is connected to the cleaning agent container 5 and the other end is connected to the hydraulic pressure guiding line. The connection between the return line and the hydraulic pressure guiding line is located between the first control valve 15 and the second control valve 24 of the hydraulic pressure guiding line. A second cleaning control valve 22 is provided on the return line.

[0051] Preferably, in one embodiment, a four-way valve 3 is provided on the liquid pressure guiding line between the first control valve 15 and the second control valve 24 of the liquid pressure guiding line, and the return line and the backflushing line are respectively connected to different ports of the four-way valve 3, which has a simple structure.

[0052] At this point, the embodiment is configured Figure 9 Example 3 is shown.

[0053] In other embodiments, two tees may also be provided on the liquid pressure guiding line between the first control valve 15 and the second control valve 24 of the liquid pressure guiding line, with the return line and the backflushing line connected to different tees respectively.

[0054] When unblocking the liquid storage system in Example 3, refer to Figures 6-7 On the basis of, such as Figure 9 As shown, the first step is to perform a cyclic cleaning operation, referring to... Figure 6 As shown, close the first control valve 15 and the second control valve 24 of the liquid pressure guiding line, and open the first cleaning control valve 20, the second cleaning control valve 22 and the liquid pump 21. The cleaning agent first cleans the part between the first control valve 15 and the second control valve 24 of the liquid pressure guiding line, thereby ensuring the smooth progress of subsequent backflushing and avoiding pressure buildup due to severe blockage of the liquid pressure guiding line during backflushing.

[0055] Then, refer to Figure 7 , Figure 9 As mentioned above, simply perform the backwashing operation.

[0056] It should be noted that, during the backwashing operation, since this embodiment has a second cleaning control valve 22, backwashing can be performed in the following two ways:

[0057] Method 1: The second cleaning control valve 22 is always closed;

[0058] Method 2: The second cleaning control valve 22 is opened intermittently to generate pressure pulses during backflushing, thereby improving the unclogging ability.

[0059] To improve the unblocking effect, as a preferred embodiment, based on embodiment 1, the liquid storage system further includes a residual liquid collection pipeline and a residual liquid collection container 4. One end of the residual liquid collection pipeline is connected to the residual liquid collection container 4, and the other end is connected to the hydraulic pressure guiding pipeline. The connection between the residual liquid collection pipeline and the hydraulic pressure guiding pipeline is located between the first control valve 15 and the second control valve 24 of the hydraulic pressure guiding pipeline. A residual liquid collection control valve 18 is provided on the residual liquid collection pipeline.

[0060] Preferably, in one embodiment, the residual liquid collection container 4 is provided with a second vent valve 19 to connect the residual liquid collection container 4 with the atmosphere, thereby balancing the pressure inside the residual liquid collection container 4.

[0061] In other embodiments, the second vent valve 19 may be omitted, and instead an openable cover may be provided on the residual liquid collection container 4.

[0062] In a preferred embodiment, a second pressure gauge 7 is provided on the liquid pressure guiding line. The second pressure gauge 7 is used to detect the pressure of the portion of the liquid pressure guiding line located between the first control valve 15 and the second control valve 24 of the liquid pressure guiding line.

[0063] At this point, the embodiment constitutes Figure 10 Example 4 is shown.

[0064] In embodiment 4, the liquid storage system also includes a pressure measuring line, one end of which is connected to the second pressure gauge 7 and the other end is connected to the hydraulic pressure guiding line. The connection between the pressure measuring line and the hydraulic pressure guiding line is located between the first control valve 15 and the second control valve 24 of the liquid pressure guiding line. A second pressure gauge control valve 16 is provided on the pressure measuring line. A redundant control valve 17 is also provided on the backflush line.

[0065] The main function of the second pressure gauge control valve 16 is to prevent the cleaning agent from entering the second pressure gauge 7 during backflush, especially in cases where the pressure of the cleaning agent is too high and exceeds the range of the second pressure gauge 7 due to blockage of the liquid pressure guiding line, thereby preventing damage to the second pressure gauge 7.

[0066] The function of the redundant control valve 17 is to reduce the flow range of the acidic liquid, so that elemental sulfur is precipitated at most at the redundant control valve 17, and not at the residual liquid collection control valve 18 and the first cleaning control valve 20.

[0067] In other embodiments, the redundant control valve 17 and the second pressure gauge 7 may not be provided, such as in Embodiments 2 and 3.

[0068] When unblocking the liquid storage system in Example 4, the first step is to perform a drainage operation, referring to... Figure 5 On the basis of, such as Figure 10 As shown, when the first control valve 15, the second control valve 24, the redundant control valve 17, and the residual liquid collection control valve 18 of the liquid pressure line are opened, all the acidic liquid in the liquid pressure line flows into the residual liquid collection container 4.

[0069] When the second pressure gauge 7 returns to zero, it indicates that the acidic liquid has completely flowed into the residual liquid collection container 4. Of course, in embodiments where the second pressure gauge 7 is not installed, one can also wait for a certain period of time based on practical experience, or observe whether the liquid level in the residual liquid collection container 4 is still changing.

[0070] Then, the circulation cleaning and backflushing operations are performed sequentially. During the circulation cleaning and backflushing operations, since the acidic liquid in the liquid pressure pipeline has been collected into the residual liquid collection container 4, the cleaning agent will not mix with the acidic liquid, thus ensuring that the effective ingredients in the cleaning agent have a high concentration and improving the unblocking effect.

[0071] In other embodiments, a residual liquid collection line may not be provided. In this case, the cleaning agent will mix with the acidic liquid in the liquid pressure-conducting line, resulting in dilution of the cleaning agent. Therefore, it is necessary to increase the dosage of the cleaning agent and / or the concentration of the active ingredient in the cleaning agent.

[0072] To simplify the structure, in one embodiment, one end of the residual liquid collection pipeline is connected to the residual liquid collection container 4, and the other end is connected to the backflushing pipeline. The connection between the residual liquid collection pipeline and the backflushing pipeline is located between the first cleaning control valve 20 and the connection between the backflushing pipeline and the hydraulic pressure guiding pipeline. This allows the residual liquid collection pipeline to utilize part of the backflushing pipeline to connect with the liquid pressure guiding pipeline, saving pipeline length and simplifying the structure.

[0073] Similarly, in one embodiment, one end of the return pipeline is connected to the cleaning agent container 5, and the other end is connected to the pressure testing pipeline. When a second pressure gauge control valve 16 is provided on the pressure testing pipeline, the connection between the return pipeline and the pressure testing pipeline is located between the second pressure gauge control valve 16 and the pressure gauge, thereby allowing the return pipeline to utilize part of the pressure testing pipeline to connect with the liquid pressure guiding pipeline, saving pipeline length and simplifying the structure.

[0074] In other embodiments, the reflux line, residual liquid collection line, backflushing line, and pressure measuring line may also be independent lines.

[0075] At this point, this embodiment is... Figures 2-6 Example 1 is shown.

[0076] When unblocking the liquid storage system in Example 1, such as Figure 4 As shown, the first step is to perform a pressure relief operation by closing the inlet pipeline control valve 8, the outlet pipeline control valve 12, and the gas supply pipeline control valve 11, and opening the first vent valve 9. After the first pressure gauge 6 returns to zero, the first vent valve 9 is closed, thereby relieving the gas pressure in the liquid storage container 1 and reducing the liquid pressure in the liquid pressure guiding pipeline, which is beneficial for subsequent operations.

[0077] Then, perform the drainage operation, circulation cleaning operation, and backwashing operation in sequence.

[0078] When the liquid storage system is operating normally, the first pressure gauge 6, safety valve 10, inlet pipeline control valve 8, outlet pipeline control valve, gas pipeline control valve 11, and first vent valve 9 are in operation. The second pressure gauge control valve 16, gas pressure guiding pipeline control valve 14, liquid pressure guiding pipeline first control valve 15, and liquid pressure guiding pipeline second control valve 24 are in the open state, and the remaining control valves are in the closed state.

[0079] When determining whether the level transmitter 2 is blocked, the inlet control valve 8 or the outlet control valve 12 can be opened. If the value of the level transmitter 2 does not change, it proves that the hydraulic pressure guiding line is blocked, and the unblocking operation described above can be performed.

[0080] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some technical features, or organically combine different specific implementation methods to create the specific implementation methods shown in the accompanying drawings. Of course, those skilled in the art can also create other specific implementation methods not shown in the accompanying drawings. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid storage system with a plug removal function, comprising a liquid storage container and a liquid level transmitter, the upper and lower portions of the liquid storage container being connected to the liquid level transmitter through a gas pressure guide line and a liquid pressure guide line respectively, a first control valve for the liquid pressure guide line being provided on the liquid pressure guide line, characterized in that, It also includes a backwashing device, and a second control valve for the liquid pressure guiding line is also provided on the liquid pressure guiding line; The backwashing device includes a cleaning agent container and a backwash line. One end of the backwash line is connected to the cleaning agent container, and the other end is connected to the hydraulic pressure guiding line. The connection between the backwash line and the hydraulic pressure guiding line is located between the first control valve and the second control valve of the hydraulic pressure guiding line. The backflushing line is also equipped with a liquid pump and a first cleaning control valve.

2. The liquid storage system with plug breaking function according to claim 1, characterized in that, The liquid storage system with unblocking function also includes a return pipeline. One end of the return pipeline is connected to the cleaning agent container, and the other end is connected to the hydraulic pressure guiding pipeline. The connection between the return pipeline and the hydraulic pressure guiding pipeline is located between the first control valve and the second control valve of the hydraulic pressure guiding pipeline. A second cleaning control valve is provided on the return pipeline.

3. The liquid storage system with plug breaking function according to claim 2, characterized in that, A four-way valve is provided on the liquid pressure guiding line between the first control valve and the second control valve of the liquid pressure guiding line. The return line and the backflushing line are respectively connected to different ports of the four-way valve.

4. The liquid storage system with the plug breaking function according to any one of claims 1-3, wherein, The liquid storage system with unblocking function also includes a residual liquid collection pipeline and a residual liquid collection container. One end of the residual liquid collection pipeline is connected to the residual liquid collection container, and the other end is connected to the hydraulic pressure guiding pipeline. The connection between the residual liquid collection pipeline and the hydraulic pressure guiding pipeline is located between the first control valve and the second control valve of the hydraulic pressure guiding pipeline. A residual liquid collection control valve is provided on the residual liquid collection pipeline.

5. The liquid storage system with plug breaking function according to claim 4, characterized in that, A pressure gauge is installed on the liquid pressure guiding line. The pressure gauge is used to detect the pressure of the section of the liquid pressure guiding line located between the first control valve and the second control valve of the liquid pressure guiding line.

6. The liquid storage system with plug breaking function of claim 1, wherein, The liquid storage system with unblocking function also includes a residual liquid collection pipeline and a residual liquid collection container. One end of the residual liquid collection pipeline is connected to the residual liquid collection container, and the other end is connected to the backflushing pipeline. The connection between the residual liquid collection pipeline and the backflushing pipeline is located between the first cleaning control valve and the connection between the backflushing pipeline and the hydraulic pressure guide pipeline. A residual liquid collection control valve is provided on the residual liquid collection pipeline.

7. The liquid storage system with plug breaking function according to claim 6, characterized in that, The liquid storage system with unblocking function also includes a pressure testing line and a pressure gauge. One end of the pressure testing line is connected to the pressure gauge, and the other end is connected to the hydraulic pressure guiding line. The connection between the pressure testing line and the hydraulic pressure guiding line is located between the first control valve and the second control valve of the liquid pressure guiding line. The pressure gauge is used to detect the pressure of the portion of the liquid pressure guiding line located between the first control valve and the second control valve.

8. The liquid storage system with plug breaking function according to claim 7, characterized in that, The liquid storage system with unblocking function also includes a return line, one end of which is connected to the cleaning agent container and the other end is connected to the pressure testing line. A second cleaning control valve is installed on the return line.

9. The liquid storage system with plug breaking function according to claim 8, characterized in that, The pressure testing line is equipped with a pressure gauge control valve, and the connection between the return line and the pressure testing line is located between the pressure gauge control valve and the pressure gauge.

10. The liquid storage system with plug breaking function of claim 6, wherein, Both the residual liquid collection container and the cleaning agent container are equipped with vent valves.

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