Liquid leakage detection tool for flow battery

Abstract

The utility model relates to the technical field of flow batteries, in particular to a flow battery leakage detection tool which comprises a leakage wire mounting groove, a leakage detection wire, a flow guide groove, a branching groove, a wiring groove, an external connection cable and a connection cable joint. A leak detection tool is placed in an area needing to be detected, and the tools are connected through an external cable. If liquid leaks, the electrolyte soaks the leakage detection line through the tool diversion trench, and liquid leakage alarm is triggered. The device can prevent missing report caused by tilting of the leak detection line, reduces the field workload, and is convenient to replace; and false alarms caused by rainwater splashing or dust accumulation can be prevented.

Description

Technical Field

[0001] This application relates to the field of flow batteries, and more particularly to a flow battery leakage detection fixture. Background Technology

[0002] Flow battery energy storage systems are a new type of green electrochemical energy storage device. They have advantages such as good safety, long service life, and independent design of power and capacity. They can be used not only as energy storage devices in conjunction with solar and wind power generation processes to smooth the fluctuations in renewable energy power generation and ensure the stable power supply of renewable energy power generation systems, but also for grid peak shaving to improve grid stability and ensure grid security.

[0003] As an electrochemical reaction system, the flow battery energy storage system must first ensure its safe, reliable, stable and reliable operation during application. This requires real-time monitoring and control of the power unit (stack), energy storage unit (electrolyte and tank), and electrolyte delivery unit (pipelines, valves, pumps, heat exchangers, etc.) status to ensure the reliable and effective operation of the flow battery system and the safe operation of the stack. The existing flow battery leakage detection system uses a bayonet to place the leakage line in the possible leakage area. This implementation method has the following defects: (1) The bayonet is easy to fall off, causing the leakage line to stick up, resulting in no detection when leakage occurs and false alarms occur; (2) The side leakage line is close to the door and window area, and rainwater can easily splash onto the leakage line when the door and window are opened on rainy days, causing false alarms; (3) The leakage line is exposed, and dust can easily cover it, causing false alarms; (4) The layout and replacement of the leakage line are carried out on site, which is a lot of work and takes a long time, affecting maintenance efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a flow battery leakage detection fixture, which adopts the following technical solution:

[0005] A flow battery leakage detection fixture includes a leak detection fixture body, an external connecting cable (5), a male connecting cable connector, and a female connecting cable connector. The leak detection fixture body has a flow channel for the flow of leaking electrolyte and a leak detection wire mounting slot for mounting leak detection wires; the flow channel and the leak detection wire mounting slot intersect. On both sides of the leak detection fixture body are a branching groove for separating the leak detection wires and a wiring groove for coiling the wires. The leak detection wires are connected to the external connecting cable via the branching groove and the wiring groove, respectively. The end of the external connecting cable is connected to a male connecting cable connector or a female connecting cable connector. The flow battery leakage detection fixture achieves circuit connectivity between different flow battery leakage detection fixtures by connecting to the female connecting cable connector of another flow battery leakage detection fixture via a cable connector.

[0006] Preferably, the leak detection fixture is made of corrosion-resistant material, with a non-permeable flat or curved top surface and a bottom surface machined with the required structure using a carving machine. Preferably, the depth of the guide groove is 1~2mm, and adjacent guide grooves are parallel to each other with a distance of 5~10cm.

[0007] Preferably, the depth of the wiring groove is 1~2mm.

[0008] Preferably, the leak detection wire is fixed in the wiring groove by welding, and its diameter is less than or equal to the depth of the wiring groove.

[0009] Preferably, the dividing grooves are symmetrical along the centerline, and the crossing angle is greater than or equal to 90°.

[0010] Preferably, the wiring channel is serpentine.

[0011] The working principle is to place leak detection fixtures in the area to be tested, and the fixtures are connected by external cables. If there is a leak, the electrolyte will soak the leak detection wires through the fixture's guide tank, triggering a leak alarm.

[0012] This application includes at least one of the following beneficial technical effects:

[0013] 1. The flow battery leakage detection fixture of this application uses its own weight to firmly press down the leakage test wire to prevent it from tilting up; the leakage test wire is stuck in the wire groove of the fixture and upside down, which can effectively prevent false alarms caused by rainwater splashing on it; the leakage test wire is stuck in the wire groove of the fixture and upside down, which can prevent false alarms caused by dust contamination.

[0014] 2. The independent design of the leakage detection fixture in this application allows the leakage detection fixture to be manufactured in the factory and then deployed and replaced on site, greatly reducing on-site workload and improving maintenance efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the bottom structure of the flow battery leakage detection fixture according to an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the top structure of the flow battery leakage detection fixture according to an embodiment of this application;

[0017] Explanation of reference numerals in the attached diagram: 1. Leakage test line; 2. Flow guide channel; 3. Branch channel; 4. Wiring channel; 5. External connection cable; 6. Leakage test line installation channel; 7. Leakage test fixture; 8. Male connector for connecting cable; 9. Female connector for connecting cable. Detailed Implementation

[0018] A flow battery leakage detection fixture includes a leak detection fixture body 7, an external connecting cable 5, a male connector 8, and a female connector 8. The leak detection fixture body 7 is made of corrosion-resistant material. Its top surface is a non-permeable flat or curved surface, and its bottom surface is machined with a guide groove 2 for the leakage electrolyte to flow to a depth of 1-2 mm. Adjacent guide grooves 2 are parallel to each other and spaced 5-10 cm apart. The bottom of the leak detection fixture body 7 has a leak detection wire mounting groove 6 for mounting a leak detection wire 1. The leak detection wire 1 is fixed to the wiring groove 4 by welding, and its diameter is less than or equal to the depth of the wiring groove 4. The guide channel 2 intersects with the leak detection line installation channel 6. The leak detection fixture body 7 has branching channels 3 on both sides for separating the leak detection lines 1. The branching channels 3 are symmetrically intersecting at an angle greater than or equal to 90° along the center line. The wiring channels 4 are serpentine for coiling the lines with a depth of 1~2mm. The leak detection lines 1 are connected to the external connecting cable 5 through the branching channels 3 and the wiring channels 4 respectively. The end of the external connecting cable 5 is connected to a male connector 8 or a female connector 9. The flow battery leakage detection fixture is connected to the female connector 9 of another flow battery leakage detection fixture through the cable connector 8 to achieve circuit connection between different flow battery leakage detection fixtures.

[0019] Example 1: The specific solution is as follows

[0020] refer to Figure 1 and Figure 2 The leak detection fixture 7 is made of 50mm thick PP plastic sheet. The top surface is a non-permeable plane, and the bottom surface is engraved with a 1mm deep guide groove 2 for the leakage electrolyte. Adjacent guide grooves 2 are parallel to each other and 5cm apart. The leak detection wire 1 is fixedly installed in the leak detection wire mounting groove 6 by welding, ensuring that the leak detection wire 1 does not protrude from the leak detection wire mounting groove 6. The branch grooves 2 are symmetrically intersecting at a 90° angle along the centerline. The leak detection wire 1 is connected to the external connecting cable 5 via the branch grooves 2 in the wiring groove 4, which is serpentine in shape and 1mm deep. The assembled leak detection fixture 7 is placed upside down in the area where leakage is possible. The external connecting cable 5 is connected to a male connector 8 or a female connector 9. The flow battery leak detection fixture is connected to another flow battery leak detection fixture via the cable connector 8 and the female connector 9 of the connecting cable of the other flow battery leak detection fixture to achieve circuit connection between different flow battery leak detection fixtures. When leakage occurs, the liquid will wet the leak detection line through the guide groove 2, thereby triggering the leak alarm.

[0021] Example 2: The specific solution is as follows

[0022] The leak detection fixture 7 is made of 50mm thick PP plastic sheet. The top surface is a non-permeable arc surface, and the bottom surface is engraved with a 2mm deep guide groove 2 for the leakage electrolyte. Adjacent guide grooves 2 are parallel to each other and 10cm apart. The leak detection wire 1 is fixedly installed in the leak detection wire mounting groove 6 by welding, ensuring that the leak detection wire 1 does not protrude from the leak detection wire mounting groove 6. The branch grooves 2 are symmetrically intersecting at a 90° angle along the centerline. The leak detection wire 1 is connected to the external connecting cable 5 via the branch grooves 2 in the wiring groove 4, which has a serpentine shape and a depth of 2mm. The assembled leak detection fixture 7 is placed upside down in the area where leakage is possible. The external connecting cable 5 is connected to a male connector 8 or a female connector 9. The flow battery leak detection fixture is connected to another flow battery leak detection fixture via the cable connector 8 and the female connector 9 of the connecting cable of the other flow battery leak detection fixture to achieve circuit connection between different flow battery leak detection fixtures. When leakage occurs, the liquid will wet the leak detection line through the guide groove 2, thereby triggering the leak alarm.

[0023] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flow battery leakage detection fixture, characterized in that, The device includes a leak detection fixture (7), an external connecting cable (5), a male connector for the connecting cable (8), and a female connector for the connecting cable (9). The leak detection fixture (7) has a flow channel (2) for the flow of leaking electrolyte and a leak detection wire mounting groove (6) for installing the leak detection wire (1). The flow channel (2) and the leak detection wire mounting groove (6) intersect. The leak detection fixture (7) has a splitting groove (3) for separating the leak detection wire (1) and a wiring groove (4) for coiling the wire on both sides. The leak detection wire (1) is connected to the external connecting cable (5) through the splitting groove (3) and the wiring groove (4). The external connecting cable (5) is connected to a male connector for the connecting cable (8) or a female connector for the connecting cable (9) at its end. The flow battery leak detection fixture is connected to another flow battery leak detection fixture through the cable connector (8) and the female connector for the connecting cable (9) to achieve circuit connection between different flow battery leak detection fixtures.

2. The flow battery leakage detection fixture as described in claim 1, characterized in that, The leak testing fixture (7) is made of corrosion-resistant material, with a non-permeable flat or curved surface on the top surface and the bottom surface processed by a carving machine to form the required structure.

3. The flow battery leakage detection fixture as described in claim 1, characterized in that, The depth of the guide groove (2) is 1~2mm, and the two adjacent guide grooves (2) are parallel to each other and the distance between them is 5~10cm.

4. The flow battery leakage detection fixture as described in claim 1, characterized in that, The depth of the wiring groove (4) is 1~2mm.

5. The flow battery leakage detection fixture as described in claim 1, characterized in that, The leak detection wire (1) is fixed in the wiring groove (4) by welding, and its diameter is less than or equal to the depth of the wiring groove (4).

6. The flow battery leakage detection fixture as described in claim 1, characterized in that, The dividing groove (3) is symmetrical about the centerline and the included angle of intersection is greater than or equal to 90°.

7. The flow battery leakage detection fixture as described in claim 1, characterized in that, The wiring groove (4) is serpentine.

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