Underground drainage pipeline leakage detection device

Abstract

The invention provides an underground drainage pipeline leakage detection device which comprises a cable reel, an industrial control system and a focusing type electrode array probe, wherein the industrial control system and the focusing type electrode array probe are electrically connected. An annular wire twisting adjusting piece is arranged outside the cable reel, at least two guide blocks are rotationally arranged outside the cable reel, and the guide blocks are configured to slide in a groove of the wire twisting adjusting piece to enable the cable reel to rotate so as to adjust a twisted cable. According to the underground drainage pipeline leakage detection device, the design of the annular wire twisting adjusting piece allows the cable reel to overturn on the annular piece, the overturning action is beneficial to uniformly distributing the tension of the cable, and excessive twisting caused by long-time single-direction winding of the cable is avoided. The overturning mechanism not only reduces the abrasion of the cable, but also reduces the risk that the internal structure of the cable is damaged, thereby improving the overall durability and reliability of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage pipe leakage detection, and in particular to an underground drainage pipe leakage detection device. Background Art

[0002] When a drainage pipe leaks, sewage leaking out of the pipe will cause environmental pollution, while groundwater leaking into the pipe will increase the cost of urban drainage operation and maintenance. Detecting and repairing drainage pipe leaks is an important part of the work of the municipal department. Before repairing the leak, it is necessary to determine the leak information such as the defect location, defect size, and defect type. Traditional detection methods such as CCTV and sonar cannot detect small and medium-sized leaks such as defective joints and defective branch pipes. The leakage rate is high, and it is impossible to classify leaks and evaluate the leakage volume, which cannot meet actual needs. The drainage pipe leak detector adopts focused current rapid detection technology. It detects and accurately locates the pipeline leak on site by measuring the leakage current of the focused electrode array probe passing through the leak when it moves continuously in the pipe in real time.

[0003] The cable reel in the prior art plays an important role in the drainage pipe leakage detection device. It is responsible for storing and releasing the cables connecting the probe and the control system. However, this design has some defects. First, when the cable is wound on the cable reel, if the cable is looped or wrapped, it will cause increased friction between the cables, which will not only reduce the service life of the cable, but also cause damage to the internal wires due to excessive twisting of the cable. Secondly, the looping of the cable may also cause uneven tension in the cable during the release or winding process, which may affect the movement stability of the probe in the pipeline, and then affect the accuracy and efficiency of the detection. Therefore, the cable reel of the prior art needs to be improved to solve these problems and ensure the reliability of the cable during use and the smooth progress of the detection work. Summary of the invention

[0004] The present invention proposes an underground drainage pipe leakage detection device, which solves the problem in the prior art that when the cable is wound on the cable reel, the cable becomes entangled or wrapped, which will cause increased friction between the cables, which will not only reduce the service life of the cable, but also cause damage to the internal wires due to excessive twisting of the cable.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A device for detecting leakage of underground drainage pipes comprises a cable reel, and a probe electrically connected to an industrial control system and a focusing electrode array, respectively; an annular twist adjustment piece is provided on the outside of the cable reel, and at least two guide blocks are rotatably provided on the outside of the cable reel, and the guide blocks are configured to slide along the groove of the twist adjustment piece so that the cable reel rotates to adjust the twisted cable.

[0007] Furthermore, the front and rear sides of the twist wire adjustment member are provided with enclosures for limiting the guide block.

[0008] Furthermore, a positioning rack is provided inside the twist wire adjustment member, and an elastic positioning member extending to engage with the positioning rack is provided in the guide block.

[0009] Furthermore, the elastic positioning member includes a flat-headed rod with one end fixed to the inside of the guide block, a positioning rod guided to slide on the flat-headed end of the flat-headed rod, and a spring abutting between the flat-headed rod and the positioning rod.

[0010] Furthermore, a limit screw is threadedly arranged on the guide block and abuts against the outer side of the positioning rod.

[0011] Furthermore, it also includes a shield, the inner two sides of which are fixedly connected to the two sides of the twist wire adjustment member; wherein at least one side of the shield is a semi-open design.

[0012] Beneficial effects of the technical solution provided by this application:

[0013] The design of the annular twisting adjustment part of the underground drainage pipe leakage detection device allows the cable drum to flip on the ring. This flipping action helps to evenly distribute the tension of the cable and avoid excessive twisting of the cable due to long-term single-direction winding. This flipping mechanism not only reduces the wear of the cable, but also reduces the risk of damage to the internal structure of the cable, thereby improving the overall durability and reliability of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the underground drainage pipe leakage detection device of the present invention;

[0016] Figure 2 is a schematic cross-sectional view of a cable reel of the present invention;

[0017] Figure 3 It is a partially enlarged schematic diagram of the cross section of the cable reel of the present invention.

[0018] In the figure: 10 cable drum, 11 guide block, 12 limit screw; 20 industrial control system; 30 industrial control system; 40 twisting adjustment part, 41 enclosure, 42 positioning rack; 50 elastic positioning part, 51 flat head rod, 52 positioning rod, 53 spring; 60 protective cover. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Reference Figure 1 , an underground drainage pipeline leakage detection device, including a cable reel 10, a part for storing and releasing cables, which is electrically connected to an industrial control system 20 and a probe 30 through cables to ensure the transmission of signals and power. It is electrically connected to the industrial control system 20 and the focusing electrode array probe 30 respectively; the industrial control system 20 serves as the control center of the entire detection device, is responsible for receiving the detection data of the probe 30, and controls the operation of the cable reel 10 according to the data, such as the release and reeling of the cable. The focusing electrode array probe 30 is the detection part of the device, which is connected to the industrial control system 20 through a cable and is responsible for the actual leakage detection work inside the pipeline.

[0021] The cable drum 10 is provided with an annular twist adjustment member 40 on the outside. The annular twist adjustment member 40 is an annular structure provided on the outside of the cable drum 10. Its design allows the cable to be wound and released on the cable drum in a more orderly manner, reducing the twisting and tangling of the cable. The cable drum 10 is provided with at least two guide blocks 11 on the outside of the cable drum 10. The guide blocks 11 are configured to slide along the grooves of the twist adjustment member 40 so that the cable drum 10 rotates to adjust the twisted cable. At least two guide blocks 11 are provided along the inside of the annular twist adjustment member 40, and they can slide inside the annular twist adjustment member. The function of the guide blocks 11 is to guide the direction of the cable, ensure that the cable moves along a predetermined path when released or reeled, and avoid confusion and twisting of the cable.

[0022] When the cable is wound on the cable drum, the annular twist adjuster 40 provides a guide path so that the cable can be evenly distributed on the annular structure. The guide blocks 11 slide inside the annular twist adjuster, and their positions and movement directions can be adjusted according to the tension and direction of the cable, ensuring that the cable maintains a straight path when released, reducing the possibility of twisting and tangling. This design not only improves the efficiency and life of the cable, but also ensures the stable movement of the probe in the pipeline, thereby improving the accuracy and reliability of detection.

[0023] Furthermore, the front and rear sides of the twist adjustment member 40 are provided with enclosures 41 for limiting the guide block 11. The enclosures are provided on the front and rear sides of the annular twist adjustment member 40, and the function of these enclosures is to limit the movement range of the guide block 11, and ensure that the sliding of the guide block inside the annular twist adjustment member does not exceed the predetermined area. Through the provision of the enclosure 41, the movement of the guide block 11 is limited inside the annular twist adjustment member 40, which helps to maintain the neat arrangement and orderly release of the cables, and prevent the cables from becoming confused or crossed during winding or release.

[0024] Reference Figure 2 The twist wire adjustment member 40 is provided with a positioning rack 42 inside, and the guide block 11 is provided with an elastic positioning member 50 extending to engage with the positioning rack 42.

[0025] A positioning rack is provided inside the annular twist adjuster 40, which is a component having a series of tooth structures for engaging with the elastic positioning member 50 in the guide block 11. The guide block 11 is provided with elastic positioning members, which extend to a position capable of engaging with the positioning rack 42. The design of the elastic positioning members allows them to slide on the positioning rack while maintaining a certain elasticity to ensure that the guide block moves stably inside the annular twist adjuster. The elastic positioning member 50 engages with the positioning rack, providing a mechanical locking mechanism to ensure that the movement of the guide block inside the annular twist adjuster is orderly and controllable.

[0026] Reference Figure 3 The elastic positioning member 50 includes a flat-headed rod 51 with one end fixed to the inside of the guide block 11, a positioning rod 52 guided to slide on the flat end of the flat-headed rod 51, and a spring 53 abutting between the flat-headed rod 51 and the positioning rod 52.

[0027] The flat-headed rod 51 is a part of the elastic positioning member 50, one end of which is fixed inside the guide block 11, and the other end forms a flat head end, which is used to support the positioning rod 52 and allow it to slide on the flat head end. The positioning rod 52 is connected to the flat head end of the flat-headed rod 51, and can be guided and slid on the flat headed rod, and mesh with the positioning rack 42 inside the annular torsion wire adjustment member 40 to achieve the positioning and movement of the guide block 11 on the annular torsion wire adjustment member. The spring 53 is located between the flat-headed rod 51 and the positioning rod 52, providing the necessary elastic force so that the positioning rod 52 can stably mesh with the positioning rack 42, and provide appropriate elastic restoring force when needed.

[0028] In the operation of the underground drainage pipe leakage detection device, the elastic positioning member 50 plays a key role. The flat-headed rod 51 is fixed inside the guide block 11, and its flat end supports the positioning rod 52, allowing the positioning rod to slide on the flat-headed rod. The positioning rod 52 engages with the positioning rack 42 inside the annular twist wire adjustment member 40 to achieve accurate positioning and movement of the guide block on the annular twist wire adjustment member. The spring 53 provides elastic force to ensure that the positioning rod 52 can stably engage with the positioning rack 42, and at the same time provides elastic recovery when the cable tension changes.

[0029] It should be noted that the end of the positioning rod is designed to be pointed, and this special shape is conducive to adapting to the tooth gap of the positioning rack 42 inside the annular twist wire adjustment member 40. The pointed design allows the positioning rod 52 to be inserted into the tooth gap of the positioning rack 42 more accurately, providing a more stable meshing and positioning effect.

[0030] Furthermore, the guide block 11 is threaded with a limit screw 12 that abuts against the outside of the positioning rod 52. The limit screw 12 is a screw threaded on the guide block 11, which is designed to abut against the outside of the positioning rod 52 to limit the movement range of the positioning rod. The limit screw 12 is fixed to the guide block 11 through its threaded structure, and can adjust the distance between it and the positioning rod 52, thereby limiting the sliding range of the positioning rod on the flat head rod 51, and indirectly limiting the position of the guide block 11 on the annular torsion adjustment member 40.

[0031] In the operation of the underground drainage pipe leakage detection device, the limit screw 12 plays an important auxiliary role. When the guide block 11 needs to move along the positioning rack 42 of the annular twist wire adjustment member 40, the pointed end of the positioning rod 52 will be inserted into the tooth gap of the positioning rack. The limit screw 12 is fixed to the guide block 11 through its threaded structure, and its position is adjusted to abut against the outside of the positioning rod 52. In this way, the limit screw 12 limits the movement range of the positioning rod 52, preventing it from being disengaged from the tooth gap of the positioning rack 42 due to excessive movement, and ensuring stable engagement between the positioning rod and the positioning rack.

[0032] Furthermore, it also includes a shield 60, and the inner two sides of the shield 60 are fixedly connected to the two sides of the twist wire adjustment member 40; wherein at least one side of the shield 60 is a semi-open design.

[0033] The protective cover 60 is an additional component designed to cover and protect the annular twisting wire adjusting member 40 and related components on the cable drum 10. The inner two sides of the protective cover are fixedly connected to the two sides of the annular twisting wire adjusting member 40 to form a protective shell to prevent external factors from damaging the internal components. At least one side of the protective cover 60 adopts a semi-open design, which allows the operator to easily access and maintain the internal components when necessary, and also facilitates the guidance and fixation of the cables.

[0034] When the cable drum 10 or its internal components need to be maintained or adjusted, the operator can conveniently open the half-open side of the shield to directly access components such as the guide block 11, the positioning rod 52 and the limit screw 12. This design not only improves the convenience of maintenance.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An underground drainage pipeline leakage detection device, comprising a cable reel (10), and two electrodes electrically connected to an industrial control system (20) and a focusing electrode array probe (30); characterized in that: The cable drum (10) is provided with an annular twist adjustment member (40) on the outside, and at least two guide blocks (11) are rotatably provided on the outside of the cable drum (10). The guide blocks (11) are configured to slide along the groove of the twist adjustment member (40) so that the cable drum (10) rotates to adjust the twisted cable.

2. The underground drainage pipe leakage detection device according to claim 1, characterized in that: The front and rear sides of the twist wire adjustment member (40) are provided with enclosures (41) for limiting the guide block (11).

3. The underground drainage pipe leakage detection device according to claim 1, characterized in that: A positioning rack (42) is provided inside the twist wire adjustment member (40), and an elastic positioning member (50) extending to engage with the positioning rack (42) is provided in the guide block (11).

4. The underground drainage pipe leakage detection device according to claim 3, characterized in that: The elastic positioning member (50) comprises a flat-headed rod (51) with one end fixed to the inside of the guide block (11), a positioning rod (52) guided to slide on the flat-headed end of the flat-headed rod (51), and a spring (53) abutting between the flat-headed rod (51) and the positioning rod (52).

5. The underground drainage pipe leakage detection device according to claim 4, characterized in that: The guide block (11) is threadedly provided with a limit screw (12) which abuts against the outside of the positioning rod (52).

6. The underground drainage pipe leakage detection device according to claim 1, characterized in that: It also includes a protective cover (60), the inner two sides of which are fixedly connected to the two sides of the twist wire adjustment member (40); wherein at least one side of the protective cover (60) is of a semi-open design.

Images