Water level tester capable of being recycled through connection line and operation method of water level tester

Abstract

The invention belongs to the technical field of water level testing, and particularly relates to a water level tester with a recyclable connecting wire and an operation method thereof.The water level tester comprises a liquid level probe, a detection cable and a display terminal, and the signal output end of the liquid level probe is connected with the signal input end of the display terminal through the detection cable; a self-breaking device is additionally arranged on the detection cable, the self-breaking device is arranged close to the connecting position of the detection cable and the liquid level probe, the self-breaking device triggers and cuts off the detection cable by means of tension of the detection cable, and the detection cable is separated from the liquid level probe and recycled by means of cutting of the self-breaking device. According to the water level detector, the self-breaking device is additionally arranged, the joint of the detection cable and the liquid level probe is cut off through the self-breaking device, so that the detection cable is completely reserved and recycled, after the liquid level probe is clamped, the self-breaking device can be triggered to separate the detection cable from the liquid level probe only by pulling the detection cable, and the operation is simple.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water level testing, and particularly relates to a water level tester with recoverable connecting line and an operation method thereof. BACKGROUND

[0002] In the fields of water conservancy projects and hydrological monitoring, accurate measurement of water level is crucial, and a water level tester is usually composed of a liquid level probe, a detection cable (i.e., connecting line) and a display terminal, wherein the signal output end of the liquid level probe is connected to the signal input end of the display terminal through the detection cable, and the detection cable transmits the data detected by the liquid level probe to the display terminal in real time for observation and recording by the detection personnel. In actual use, the liquid level probe needs to be inserted into narrow and deep positions such as water wells and underground pipelines with the aid of the detection cable for water level detection.

[0003] In a complex detection environment, for example, in the presence of silt accumulation and rock protrusions in a water well, the liquid level probe is likely to be stuck, and since the liquid level probe is lowered with the aid of the detection cable, a locking device is generally provided at the connection between the two, so once the probe is stuck, the detection cable cannot be separated from the liquid level probe, and thus the liquid level probe and the detection cable cannot be successfully recovered.

[0004] Since the detection environment is usually remote, it is difficult for professional personnel to take out the liquid level probe in a short time, and the detection cable is usually made of special materials to meet the requirements of signal transmission stability and anti-interference, and is relatively expensive, and is easily damaged in the long-term complex underground environment; however, if the detection cable is forcibly pulled, the breaking position of the detection cable is difficult to predict, and the detection cable is difficult to recover completely, and thus how to recover the stuck detection cable has become a problem. SUMMARY

[0005] In order to solve the problems existing in the prior art, the application provides a water level tester with recoverable connecting line and an operation method thereof, and the application is additionally provided with a self-cutting device, which cuts the connection between the detection cable and the liquid level probe, so as to more completely retain and recover the detection cable. After the liquid level probe is stuck, the self-cutting device can be triggered to separate the detection cable from the liquid level probe by pulling the detection cable, and the operation is simple.

[0006] The specific technical scheme adopted by the application is as follows:

[0007] The utility model provides a kind of water level tester of connection recyclable, including liquid level probe, detection cable and display terminal, the signal output end of the liquid level probe is connected with the signal input end of display terminal by detection cable, self-cutting device is additionally provided on the detection cable, self-cutting device is close to the connecting place of detection cable and liquid level probe and is set, self-cutting device triggers and cuts detection cable by the tension of detection cable, detection cable is separated from liquid level probe by the cutting of self-cutting device and is recycled.

[0008] The self-cutting device includes a triangular fork-shaped support, a sliding mechanism and a cutting mechanism arranged on the support. The support includes an upper fork, a middle fork and a lower fork. The upper fork and the lower fork are respectively provided with a first fixed sleeve and a second fixed sleeve. The middle fork is provided with the sliding mechanism. The detection cable passes through the first fixed sleeve, the sliding mechanism and the second fixed sleeve in sequence and forms an arc structure with the support. The detection cable between the upper fork and the lower fork forms a crescent-shaped deformation part. The detection cable is fixedly connected with the first fixed sleeve. The deformation part is deformed and gradually straightened by the pulling force of the detection cable. The sliding mechanism triggers the cutting mechanism and cuts the detection cable by the deformation of the deformation part.

[0009] The sliding mechanism includes a sliding groove and a sliding sleeve. The sliding groove is located in the middle fork and arranged along the length direction of the middle fork. The side wall of the sliding sleeve is provided with a sliding block matched with the sliding groove. The deformation part of the detection cable passes through the sliding sleeve, and the sliding sleeve has the freedom of moving along the sliding groove by the deformation of the deformation part.

[0010] The cutting mechanism includes a first cutter and a first limiting spring arranged on the middle fork. The first cutter is arranged close to the proximal end of the middle fork. The fixed end of the first limiting spring is connected with the distal end of the middle fork. The pulling end of the first limiting spring is connected with the sliding sleeve. The sliding sleeve is located between the first cutter and the first limiting spring. The sliding sleeve is provided with a side opening for the first cutter to cut into the inside of the sliding sleeve. The blade of the first cutter is perpendicular to the detection cable. The first cutter cuts into the inside of the sliding sleeve and cuts the detection cable by the movement of the sliding sleeve.

[0011] The support is connected with a support table below. The cutting mechanism includes a rotating sleeve rotatably connected with the support table, a second cutter located in the rotating sleeve and a driving mechanism for driving the rotating sleeve to rotate. The rotating sleeve is located below the second fixed sleeve and passes through the detection cable. The second cutter is parallel to the cross section of the rotating sleeve. The driving mechanism triggers and drives the rotating sleeve to rotate by the sliding mechanism. The second cutter cuts the detection cable by the rotation of the rotating sleeve.

[0012] The rotating sleeve is internally provided with a baffle, the baffle is fixedly connected with the support and hung in the interior of the rotating sleeve, the baffle and the second cutter are parallel to each other and both have a D-shaped cross section, the area of the baffle is larger than that of the second cutter, and the baffle hinders the second cutter from contacting the detection cable when the baffle coincides with the second cutter, the second cutter forms relative rotation with the baffle by virtue of the rotation of the rotating sleeve, and the second cutter cuts the detection cable by being exposed to the baffle.

[0013] The driving mechanism comprises a coil spring, a second limiting spring and a pin shaft, the coil spring is connected with the rotating sleeve, a limiting plate is arranged on the rotating sleeve, the pin shaft which is inserted through the limiting plate and the support hinders the recovery of the pre-tensioned coil spring, the free end of the pin shaft is connected with the sliding sleeve by means of the brake wire, and the movement of the sliding sleeve drives the brake wire to pull the pin shaft to be separated from the limiting plate.

[0014] The driving mechanism further comprises a second limiting spring, the connecting end of the brake wire and the sliding sleeve and the second limiting spring are respectively located on the two sides of the sliding sleeve, the second limiting spring is located on the side of the proximal end of the intermediate bifurcated part, and a guide sleeve connected with the support is further arranged on the sliding sleeve, the guide sleeve has an L-shaped structure, one end of the guide sleeve is arranged in a horizontal direction towards the sliding sleeve, and the other end of the guide sleeve is arranged in a vertical direction towards the pin shaft.

[0015] The operation method specifically comprises the following steps:

[0016] S1, connecting the signal output end of the liquid level probe with the signal input end of the display terminal by means of the detection cable, and then gradually paying out the detection cable, so that the liquid level probe is gradually lowered into the water well;

[0017] S2, if the liquid level probe does not produce a jam during the lowering into the water, observing and recording the detection data of the display terminal, and then pulling back the detection cable to recover the liquid level probe; if the liquid level probe produces a jam during the lowering into the water and cannot be recovered, the next step is performed;

[0018] S3, continuously pulling the detection cable to make the detection cable in a taut state, the tension of the detection cable continuously increases and acts on the self-cutting device, until the tension is greater than the trigger threshold of the self-cutting device, the self-cutting device is triggered and cuts the detection cable;

[0019] S4, after the detection cable is cut, the detection cable is separated from the liquid level probe, and the remaining detection cable and the self-cutting device are recovered by continuously pulling the detection cable;

[0020] S5, the jammed liquid level probe is taken out by a professional.

[0021] The beneficial effects of the present application are:

[0022] The self-cutting device is added in the application, the connecting part of the detection cable and the liquid level probe is cut off through the self-cuting device, so that the detection cable is completely reserved and recycled. The self-cuting device is triggered by the tension of the detection cable, and is a mechanical mechanism without additional power driving equipment, which is suitable for complex detection environment, avoids the problem that the traditional motor is disabled due to water contact and the like, and does not need complex control, and the detection cable and the liquid level probe can be separated in a short time when the tension reaches the threshold.

[0023] In addition, the self-cuting device is connected with the detection cable, and can be recycled together with the detection cable after being separated from the liquid level probe, and can be repeatedly used after being pre-tensioned, so that the equipment cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structure schematic view of the water level tester in the normal state of embodiment 1;

[0025] Figure 2 is a structure schematic view of the water level tester in the pulling state of embodiment 1;

[0026] Figure 3 is a structure schematic view of the sliding sleeve in the cutting state of embodiment 1;

[0027] Figure 4 is a structure schematic view of the water level tester in the normal state of embodiment 2;

[0028] Figure 5 is a structure schematic view of the water level tester in the pulling state of embodiment 2;

[0029] Figure 6 is a structure schematic view of the rotating sleeve in the normal state of embodiment 2;

[0030] Figure 7 is a structure schematic view of the rotating sleeve in the cutting state of embodiment 2;

[0031] In the drawings, 1 is a liquid level probe, 2 is a detection cable, 3 is a display terminal, 4 is a support, 5 is an upper bifurcated part, 6 is a middle bifurcated part, 7 is a lower bifurcated part, 8 is a first fixed sleeve, 9 is a second fixed sleeve, 10 is a sliding groove, 11 is a sliding sleeve, 12 is a first cutter, 13 is a first limiting spring, 14 is a support table, 15 is a rotating sleeve, 16 is a second cutter, 17 is a baffle, 18 is a coil spring, 19 is a second limiting spring, 20 is a pin shaft, 21 is a limiting plate, 22 is a brake wire, 23 is a guide sleeve, and 24 is a bearing. DETAILED DESCRIPTION

[0032] The application will be further described below in combination with the drawings and specific embodiments:

[0033] In detail, the wire-recoverable water level tester comprises a liquid level probe 1, a detection cable 2 and a display terminal 3. Figures 1-3 The signal output end of the liquid level probe 1 is connected with the signal input end of the display terminal 3 through the detection cable 2, and a self-cutting device is additionally arranged on the detection cable 2.

[0034] In a complex detection environment, for example, the mud accumulation and rock protrusion in a water well, the liquid level probe 1 is likely to be stuck.

[0035] Therefore, the self-cutting device is additionally arranged in the present application to cut the connection between the detection cable 2 and the liquid level probe 1, so that the detection cable 2 can be recovered completely.

[0036] In addition, the self-cutting device is connected with the detection cable 2, and can be recovered together with the detection cable 2 after being separated from the liquid level probe 1.

[0037] The self-cutting device comprises a bracket 4 in a triangular fork structure, and a sliding mechanism and a cutting mechanism arranged on the bracket 4, the bracket 4 comprises an upper fork part 5, a middle fork part 6 and a lower fork part 7, the upper fork part 5 and the lower fork part 7 are respectively provided with a first fixed sleeve 8 and a second fixed sleeve 9, the middle fork part 6 is provided with the sliding mechanism, the detection cable 2 passes through the first fixed sleeve 8, the sliding mechanism and the second fixed sleeve 9 in sequence and forms an arc structure with the bracket 4, the detection cable 2 between the upper fork part 5 and the lower fork part 7 forms a crescent-shaped deformation part, the detection cable 2 is fixedly connected with the first fixed sleeve 8, the deformation part is deformed and gradually straightened by the tension of the detection cable 2, and the sliding mechanism triggers the cutting mechanism and cuts the detection cable 2 by means of the deformation of the deformation part.

[0038] The present application converts the tension into mechanical displacement by the arc structure and the crescent-shaped deformation part, so as to trigger the cutting structure to cut the detection cable 2, without electronic elements or complex control modules.

[0039] As shown in Figure 1 When the water level probe is in a natural falling state, the deformation part of the detection cable 2 is in a crescent state, and when the water level probe is stuck, the detection cable 2 is fixedly connected with the first fixed sleeve 8, at this time, the detection cable 2 is pulled upward, the deformation part of the detection cable 2 has a trend of changing from the crescent state to the vertical state, in order to reach the vertical state, the deformation part pulls the sliding mechanism, as shown in Figure 2 , so that the sliding mechanism is displaced and triggers the cutting mechanism to cut the detection cable 2.

[0040] Since the deformation part is gradually straightened when the cable is pulled, the sliding mechanism is synchronously driven to trigger cutting, so that the cutting mechanism only acts when overloaded, and the detection cable 2 is prevented from being cut by mistake in the normal operation process.

[0041] The sliding mechanism comprises a sliding groove 10 and a sliding sleeve 11, the sliding groove 10 is located in the middle fork part 6 and is arranged along the length direction of the middle fork part 6, the side wall of the sliding sleeve 11 is provided with a sliding block which is in sliding cooperation with the sliding groove 10, the deformation part of the detection cable 2 passes through the sliding sleeve 11, and the sliding sleeve 11 has the freedom of moving along the sliding groove 10 by means of the deformation of the deformation part. The sliding groove 10 limits the movement direction of the sliding sleeve 11, so as to ensure that the tension generated by the deformation of the detection cable 2 is accurately converted into the linear displacement of the sliding sleeve 11.

[0042] The cutting mechanism includes a first cutter 12 and a first limiting spring 13 disposed on the intermediate fork 6. The first cutter 12 is disposed near the proximal end of the intermediate fork 6. The fixed end of the first limiting spring 13 is connected to the distal end of the intermediate fork 6. The pulling end of the first limiting spring 13 is connected to the sliding sleeve 11. The sliding sleeve 11 is located between the first cutter 12 and the first limiting spring 13. The sliding sleeve 11 is provided with a side opening for the first cutter 12 to cut into the interior of the sliding sleeve 11. The plane of the blade of the first cutter 12 is perpendicular to the detection cable 2. The first cutter 12 cuts into the interior of the sliding sleeve 11 and cuts the detection cable 2 by means of the movement of the sliding sleeve 11.

[0043] like Figure 1 As shown, when the water level probe is in a naturally hanging state, the first limit spring 13 pulls the sliding sleeve 11, causing the detection cable 2 inside the sliding sleeve 11 to move away from the first cutter 12. At this time, the detection cable 2 is crescent-shaped.

[0044] When the water level probe gets stuck, pull the detection cable 2 upwards. The deformable part of the detection cable 2 will tend to change from a crescent state to a vertical state. The deformable part resists the pulling force of the first limiting spring 13, thereby pulling the sliding sleeve 11 towards the first cutter 12.

[0045] like Figures 2-3 As shown, as the sliding sleeve 11 moves, the first cutter 12 cuts into the interior of the sliding sleeve 11 along the side opening of the sliding sleeve 11 and cuts the detection cable 2. A small portion of the detection cable 2 below the cut position will detach from the main body of the detection cable 2 along the second sleeve and the water level probe. Since the main body of the detection cable 2 is fixedly connected to the first fixed sleeve 8 by means of a buckle, and the first fixed sleeve 8 is fixedly connected to the bracket 4, the self-cutting device will not detach from the main body of the detection cable 2 and can be recycled together with the main body of the detection cable 2.

[0046] Specific embodiment 2 differs from specific embodiment 1 in its self-breaking device structure, such as... Figures 4-7 As shown, a support platform 14 is connected below the bracket 4. The cutting mechanism includes a rotating sleeve 15 rotatably connected to the support platform 14, a second cutter 16 located inside the rotating sleeve 15, and a driving mechanism for driving the rotating sleeve 15 to rotate. The rotating sleeve 15 is located below the second fixed sleeve 9 and allows the detection cable 2 to pass through. The surface of the second cutter 16 is parallel to the cross-section of the rotating sleeve 15. The driving mechanism triggers and drives the rotating sleeve 15 to rotate by means of a sliding mechanism. The second cutter 16 rotates with the help of the rotating sleeve 15 and cuts the detection cable 2.

[0047] In specific embodiment 2, the cutting mechanism is a rotating sleeve 15 with a blade. As the detection cable 2 is pulled, the sliding mechanism moves and triggers the driving mechanism to drive the rotating sleeve 15 to rotate, so that the second cutter 16 rotates together with the rotating sleeve 15 and cuts the detection cable 2.

[0048] Wherein the rotating sleeve 15 forms a rotating connection with the support table 14 by means of bearings 24.

[0049] The rotating sleeve 15 is further provided with a baffle 17, which is fixedly connected with the support 4 and suspended inside the rotating sleeve 15. The baffle 17 and the second cutter 16 are parallel to each other and both have a D-shaped cross section. The area of the baffle 17 is larger than that of the second cutter 16. When the baffle 17 coincides with the second cutter 16, the baffle 17 prevents the second cutter 16 from contacting the detection cable 2. The second cutter 16 forms relative rotation with the baffle 17 by means of rotation of the rotating sleeve 15 and cuts the detection cable 2 by being exposed to the baffle 17.

[0050] As shown in Figure 6 , when the driving mechanism is in an untriggered state, i.e., the rotating sleeve 15 is in an initial state, the baffle 17 coincides with the second cutter 16, which can prevent the second cutter 16 from accidentally contacting the detection cable 2 and avoid accidental triggering of the cutting action due to vibration or the like during transportation or normal operation.

[0051] As shown in Figure 7 , when the rotating sleeve 15 rotates, the baffle 17 is fixedly connected with the support 4 and suspended inside the rotating sleeve 15, so the baffle 17 is stationary at this time. The second cutter 16 rotates relative to the baffle 17 and is exposed, thereby cutting the detection cable 2.

[0052] The driving mechanism includes a coil spring 18, a second limiting spring 19, and a pin shaft 20. The coil spring 18 is connected with the rotating sleeve 15. The rotating sleeve 15 is provided with a limiting plate 21. The pin shaft 20 passes through the limiting plate 21 and is inserted into the support table 14, thereby preventing the coil spring 18 from recovering. The free end of the pin shaft 20 is connected with the sliding sleeve 11 by means of a brake wire 22. The movement of the sliding sleeve 11 drives the brake wire 22 to pull the pin shaft 20 away from the limiting plate 21.

[0053] As shown in Figure 4 and Figure 6 , when the water level probe is in a normal working state, the coil spring 18 is pre-tensioned to store cutting energy. The coil spring 18 cannot recover and drive the rotating sleeve 15 to rotate under the locking of the pin shaft 20.

[0054] As shown in Figure 5 , when the water level probe is stuck, the detection cable 2 is pulled upward at this time. The sliding sleeve 11 moves, thereby moving the brake wire 22 away from the limiting plate 21 and pulling the pin shaft 20 out of the through hole of the limiting plate 21. Since the coil spring 18 lacks the restraint of the pin shaft 20, the pre-tensioned coil spring 18 quickly resets and drives the rotating sleeve 15 and the second cutter 16 to rotate together, as shown in Figure 7 , thereby quickly and forcefully cutting the detection cable 2.

[0055] The driving mechanism also includes a second limiting spring 19. The connection end of the brake line 22 and the sliding sleeve 11 and the second limiting spring 19 are respectively located on both sides of the sliding sleeve 11. The second limiting spring 19 is located on the near end side of the middle fork 6. The sliding sleeve 11 is also provided with a guide sleeve 23 connected to the bracket 4. The guide sleeve 23 has an L-shaped structure. One end of the guide sleeve 23 faces the sliding sleeve 11 and is set in the horizontal direction. The other end of the guide sleeve 23 faces the pin 20 and is set in the vertical direction.

[0056] like Figure 5 As shown, when the water level probe gets stuck, the detection cable 2 is pulled upwards. The deformed part of the detection cable 2 resists the thrust of the second limiting spring 19, thereby pulling the sliding sleeve 11 toward the side of the second limiting spring 19. Since the gate cable 22 is fixedly connected to the sliding sleeve 11, the gate cable 22 will also move accordingly. Under the guidance of the guide sleeve 23, the other end of the gate cable 22 pulls out the pin 20, thereby causing the pre-loaded coil spring 18 to quickly reset.

[0057] By restricting the path of the brake line 22 by the guide sleeve 23, the force transmission path is optimized. The guide sleeve 23 guides the brake line 22 from horizontal movement to vertical movement, avoiding the loss of force due to the decomposition of tension, and ensuring that the pin 20 is pulled out vertically.

[0058] The operation method specifically includes the following steps:

[0059] S1. Connect the signal output end of the liquid level probe 1 to the signal input end of the display terminal 3 through the detection cable 2, and then gradually release the detection cable 2, and the liquid level probe 1 gradually moves down into the water well.

[0060] S2. If the liquid level probe 1 does not get stuck while being lowered into the water, observe and record the detection data on the display terminal 3, and then pull the detection cable 2 to retrieve the liquid level probe 1; if the liquid level probe 1 gets stuck while being lowered into the water and cannot be retrieved, proceed to the next step.

[0061] S3. Continuously pull the detection cable 2 and keep the detection cable 2 in a taut state. The tension of the detection cable 2 continues to increase and acts on the self-break device until the tension is greater than the trigger threshold of the self-break device. The self-break device is triggered and cuts off the detection cable 2.

[0062] S4. After the detection cable 2 is cut off, it separates from the liquid level probe 1. Continue to pull the detection cable 2 to retrieve the remaining detection cable 2 and the self-cutting device.

[0063] S5. The liquid level probe 1 that is in place is removed by a professional.

[0064] The water level detector only needs to pull the detection cable 2 to trigger the self-cutting device to separate the detection cable 2 from the liquid level probe 1 after the liquid level probe 1 generates a clamping position, and the operation is simple.

[0065] The operation method of the water level detector in specific embodiment 1 is basically the same as that in specific embodiment 2, and the difference lies in that the water level detector in specific embodiment 2 needs to pre-tighten the coil spring 18 before use, and fix the coil spring 18 by inserting and matching the pin shaft 20 and the limiting plate 21.

Claims

1. A water level tester with a wire that can be recycled, comprising a liquid level probe (1), a detection cable (2) and a display terminal (3), the signal output end of the liquid level probe (1) is connected with the signal input end of the display terminal (3) by means of the detection cable (2), characterized in that, The detection cable (2) is additionally provided with a self-cutting device, which is arranged close to the connection between the detection cable (2) and the liquid level probe (1), and is triggered and cuts the detection cable (2) by the tension of the detection cable (2), so that the detection cable (2) is separated from the liquid level probe (1) by the cutting of the self-cutting device and is recovered.

2. The wired recoverable water level tester according to claim 1, wherein, The self-cutting device comprises a bracket (4) in a triangular fork structure, a sliding mechanism and a cutting mechanism arranged on the bracket (4), the bracket (4) comprises an upper fork part (5), a middle fork part (6) and a lower fork part (7), the upper fork part (5) and the lower fork part (7) are respectively provided with a first fixed sleeve (8) and a second fixed sleeve (9), the middle fork part (6) is provided with the sliding mechanism, the detection cable (2) passes through the first fixed sleeve (8), the sliding mechanism and the second fixed sleeve (9) in sequence and forms an arc structure with the bracket (4), the detection cable (2) between the upper fork part (5) and the lower fork part (7) forms a crescent-shaped deformation part, the detection cable (2) is fixedly connected with the first fixed sleeve (8), the deformation part is deformed and gradually straightened by the tension of the detection cable (2), and the sliding mechanism triggers the cutting mechanism and cuts the detection cable (2) by the deformation of the deformation part.

3. The wired recoverable water level tester according to claim 2, wherein, The sliding mechanism comprises a sliding groove (10) and a sliding sleeve (11), the sliding groove (10) is located in the middle fork part (6) and is arranged along the length direction of the middle fork part (6), the side wall of the sliding sleeve (11) is provided with a sliding block in sliding cooperation with the sliding groove (10), and the deformation part of the detection cable (2) passes through the sliding sleeve (11) and has the freedom of moving along the sliding groove (10) by the deformation of the deformation part.

4. The wired recoverable water level tester according to claim 3, wherein, The cutting mechanism comprises a first cutter (12) and a first limiting spring (13) arranged on the middle fork part (6), the first cutter (12) is arranged close to the proximal end of the middle fork part (6), the fixed end of the first limiting spring (13) is connected with the distal end of the middle fork part (6), the pulling end of the first limiting spring (13) is connected with the sliding sleeve (11), the sliding sleeve (11) is located between the first cutter (12) and the first limiting spring (13), the sliding sleeve (11) is provided with a side opening for the first cutter (12) to cut into the inside of the sliding sleeve (11), the plane where the blade of the first cutter (12) is located is perpendicular to the detection cable (2), and the first cutter (12) cuts into the inside of the sliding sleeve (11) and cuts the detection cable (2) by the movement of the sliding sleeve (11).

5. The wired recoverable water level tester according to claim 3, wherein, The support (4) is connected with a support table (14) below, the cutting mechanism comprises a rotating sleeve (15) rotatably connected with the support table (14), a second cutter (16) located in the rotating sleeve (15), and a driving mechanism for driving the rotating sleeve (15) to rotate, the rotating sleeve (15) is located below the second fixed sleeve (9) and passes through the detection cable (2), the surface where the second cutter (16) is located is parallel to the cross section of the rotating sleeve (15), the driving mechanism triggers and drives the rotating sleeve (15) to rotate by means of a sliding mechanism, and the second cutter (16) rotates and cuts the detection cable (2) by means of the rotating sleeve (15).

6. The wired recoverable water level tester according to claim 5, wherein, The rotating sleeve (15) is further provided with a baffle (17), the baffle (17) is fixedly connected with the support (4) and hung in the rotating sleeve (15), the baffle (17) and the second cutter (16) are parallel to each other and have a D-shaped cross section, the area of the baffle (17) is greater than that of the second cutter (16), and when the baffle (17) coincides with the second cutter (16), the baffle (17) prevents the second cutter (16) from contacting the detection cable (2), the second cutter (16) rotates relative to the baffle (17) by means of the rotation of the rotating sleeve (15), and the detection cable (2) is cut by the baffle (17).

7. The wired recoverable water level tester according to claim 5, wherein, The driving mechanism comprises a coil spring (18), a second limiting spring (19) and a pin shaft (20), the coil spring (18) is connected with the rotating sleeve (15), a limiting plate (21) is arranged on the rotating sleeve (15), the pin shaft (20) passing through the limiting plate (21) and being inserted into the support table (14) prevents the recovery of the pre-tensioned coil spring (18), the free end of the pin shaft (20) is connected with the sliding sleeve (11) by means of a brake wire (22), and the movement of the sliding sleeve (11) drives the brake wire (22) to pull the pin shaft (20) away from the limiting plate (21).

8. The wired recoverable water level tester according to claim 7, wherein, The driving mechanism further comprises a second limiting spring (19), the connecting end of the brake wire (22) and the second limiting spring (19) are located on the two sides of the sliding sleeve (11) respectively, the second limiting spring (19) is located on the side of the proximal end of the intermediate bifurcated part (6), and a guide sleeve (23) connected with the support (4) is further arranged on the sliding sleeve (11), the guide sleeve (23) has an L-shaped structure, one end of the guide sleeve (23) faces the sliding sleeve (11) and is arranged in a horizontal direction, and the other end of the guide sleeve (23) faces the pin shaft (20) and is arranged in a vertical direction.

9. A method of operating a wired retrievable water level tester for operating a wired retrievable water level tester as claimed in claim 2, characterised by, The operation method specifically comprises the following steps: S1, connecting the signal output end of the liquid level probe (1) with the signal input end of the display terminal (3) through the detection cable (2), and then gradually paying out the detection cable (2), so that the liquid level probe (1) gradually moves downward and deep into the detection area; S2, if the liquid level probe (1) does not produce a clamping position during the downward movement into the water, observing and recording the detection data of the display terminal (3), and then pulling back the detection cable (2) to recover the liquid level probe (1); if the liquid level probe (1) produces a clamping position during the downward movement into the water and cannot be recovered, the next step is performed. S3, continuously pulling the detection cable (2) and keeping the detection cable (2) in a taut state, the tension of the detection cable (2) continuously increases and acts on the self-breaking device until the tension is greater than the trigger threshold of the self-breaking device, the self-breaking device triggers and cuts off the detection cable (2); S4, after the detection cable (2) is cut off, the detection cable (2) is separated from the liquid level probe (1), and the remaining detection cable (2) and the self-breaking device are retracted by continuously pulling the detection cable (2); S5, the professional personnel takes out the liquid level probe (1) with the clamping position.

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