Water leakage point detection equipment for municipal drainage pipeline

Abstract

The invention relates to water leakage point detection equipment for a municipal drainage pipeline, and the equipment comprises a closed detection mechanism which is provided with a closed cover which can sleeve the drainage pipeline, the closed cover can form a closed detection cavity on the outer wall of the drainage pipeline, and the closed cover is formed by splicing two semicircular closed cover sections, the semi-arc closed cover section is provided with a distance adjusting mechanism capable of adjusting the distance between the semi-arc closed cover section and the drainage pipeline; the air inflation mechanism is connected with the closed cover, and the air inflation mechanism can inflate the closed detection cavity to increase the air pressure in the closed detection cavity; the air pressure sensor is connected to the closed cover, and the air pressure sensor can be used for collecting air pressure data in the closed detection cavity; the positioning walking mechanism is arranged on the front side and / or the rear side of the airtight detection mechanism, can be arranged on the drainage pipeline in a sleeving mode and is provided with at least one self-walking wheel capable of making contact with the outer wall of the drainage pipeline and a walking control motor matched with the self-walking wheel. The method is suitable for pipeline detection.

Description

Technical Field

[0001] The invention relates to a water leakage point detection device for a municipal drainage pipeline, which is applicable to the technical field of pipeline detection. Background Art

[0002] Municipal drainage pipes are common pipes used for drainage. In order to ensure that the drainage pipes will not cause water leakage due to holes or cracks after installation, it is usually necessary to detect whether the drainage pipes are leaking before installation, which requires the use of a leak point detection device.

[0003] In the prior art, general water leakage detection devices adopt a fixed structure, which cannot meet the water leakage detection requirements of drainage pipes with different diameters. At the same time, after completing the detection of one position of the drainage pipe, manpower is required to move the entire detection device to the next position before continuing the detection. It is impossible to use the automatic movement of the detection device on the drainage pipe to realize the detection of the entire drainage pipe, which greatly reduces the detection efficiency of the drainage pipe. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in view of the above-mentioned existing problems, a leakage point detection device for municipal drainage pipes is provided.

[0005] The technical solution adopted by the present invention is: a water leakage detection device for municipal drainage pipes, characterized in that it includes:

[0006] The airtight detection mechanism has an airtight cover that can be mounted on the drainage pipe, the airtight cover can form an airtight detection cavity on the outer wall of the drainage pipe, the airtight cover is formed by splicing two semi-circular arc airtight cover sections, and the semi-circular arc airtight cover section is equipped with a spacing adjustment mechanism that can adjust the spacing between it and the drainage pipe;

[0007] An inflating mechanism connected to the airtight cover, the inflating mechanism can inflate the airtight detection cavity to increase the air pressure in the airtight chamber;

[0008] An air pressure sensor is connected to the sealed cover, and the air pressure sensor can be used to collect air pressure data in the sealed detection cavity;

[0009] The positioning walking mechanism is arranged in front and / or at the rear side of the sealing detection mechanism. The positioning walking mechanism can be mounted on the drainage pipe and has at least one self-propelled wheel that can contact the outer wall of the drainage pipe, and a travel control motor that cooperates with the self-propelled wheel.

[0010] The spacing adjustment mechanism includes a first support assembly, a mounting frame and a telescopic mechanism;

[0011] The first support assembly comprises two side regulating seats which are symmetrically arranged and move towards each other. The two side regulating seats on the first support assembly are connected to a section of the semicircular arc sealed cover section via a mounting frame and a telescopic mechanism in sequence.

[0012] The telescopic mechanism comprises a closed control motor, a third screw rod, a telescopic rod and a connecting plate, wherein the telescopic rod comprises a guide rod and a hollow insert slidably sleeved on the guide rod;

[0013] A third screw and a guide rod are provided on one side of the mounting frame close to the semicircular sealed cover, the third screw is rotatably connected to the corresponding mounting frame, and the guide rod is fixedly connected to the corresponding mounting frame; the output end of the sealed control motor is fixedly connected to the corresponding third screw;

[0014] The hollow insert is plugged into and matched with the corresponding semicircular sealed cover, and the hollow insert is fixedly connected with a connecting plate that is threadably matched with the corresponding third screw.

[0015] A second pulley is fixedly arranged on the peripheral side surface of the third screw rod; a linkage shaft is rotatably arranged between the two relatively arranged mounting frames, and a third pulley corresponding to the second pulley is fixedly arranged on the linkage shaft, and the third pulley is connected to the corresponding second pulley through a second transmission belt.

[0016] A detection substrate is fixedly provided on the surface of the connecting plate, and the air supply equipment in the inflation mechanism is installed on the detection substrate. The air outlet of the air supply equipment is connected to an air supply pipe, and the air supply pipe is tightly plugged into the air inlet on the side of the corresponding semicircular arc closed cover segment.

[0017] The positioning walking mechanism comprises:

[0018] A first support assembly, the first support assembly comprising two lateral regulating seats symmetrically arranged and moving toward each other;

[0019] A first positioning component, the first positioning component is slidably disposed on the first supporting component, and the first positioning component is located between the two lateral regulating seats, and the first positioning component includes a positioning ball;

[0020] A second support assembly, wherein the second support assembly is arranged in one-to-one correspondence with the lateral adjustment seat, the second support assembly is installed on the corresponding lateral adjustment seat, and the second support assembly includes a first elastic member with an arc-shaped structure;

[0021] And a second positioning assembly, the second positioning assembly is arranged in a one-to-one correspondence with the second supporting assembly, the second positioning assembly is rotatably arranged on the inner side of the corresponding second supporting assembly and is connected to the first elastic member, and the second positioning assembly includes the self-propelled wheel.

[0022] The first support assembly also includes a first support frame, two limit grooves are symmetrically arranged on the inner side of the first support frame, the lateral adjustment seat is fixedly connected to the slider inside the limit groove, and first screws are rotatably arranged on both sides of the first support frame, and the first screws are threadedly matched with the corresponding lateral adjustment seats.

[0023] Two extension channels are symmetrically arranged on the inner side of the first support frame, and the extension channels are arranged one-to-one with the lateral adjustment seat. A rope guide plate is fixedly arranged on the inner end of the extension channel, and a rope threading opening is arranged at the bottom of the installation cavity inside the lateral adjustment seat, and the rope threading opening is located on the inner side of the corresponding extension channel;

[0024] A plurality of first sliding holes are arranged on the inner side of the first support frame, a positioning cavity is arranged at the center position of the inner side of the first support frame, the positioning cavity and the corresponding first sliding hole are arranged coaxially, a second sliding hole which is connected to the internal mounting cavity thereof is arranged on the top of the lateral regulating seat, a second support frame is fixedly arranged on the bottom of the first support frame, and third sliding holes which correspond to the first sliding holes one by one are arranged on the surface of the second support frame.

[0025] The first positioning assembly also includes a first fixed seat and a second fixed seat, both of which are located on the inner side of the second supporting frame, a first fixed rod is fixedly arranged on the top of the first fixed seat, the first fixed rod is fixedly connected to the second fixed seat, a second fixed rod is slidably arranged between the first fixed seat and the second fixed seat, and both of the first fixed rod and the second fixed rod are fixedly connected to the corresponding positioning ball; the first fixed rod is slidably matched with the corresponding first sliding hole, and the second fixed rod is slidably matched with the corresponding first sliding hole and the third sliding hole.

[0026] An internal threaded adjustment ring corresponding to the second fixed rod is rotatably provided on the top of the first fixed seat, and the internal threaded adjustment ring is sleeved on the corresponding second fixed rod and the two are threadedly matched, a connecting ring is fixedly provided on the top of the internal threaded adjustment ring, and a first pulley coaxial with the connecting ring is fixedly provided on the top of the connecting ring, and the two first pulleys on the same side of the first fixed rod are connected by a first transmission belt.

[0027] The second support assembly further includes a third support frame, the first elastic member is arranged inside the third support frame, a limiting sleeve coaxial with the second sliding hole is fixedly arranged at the bottom of the third support frame, a support rod located inside the corresponding limiting sleeve is fixedly arranged at the bottom of the third support frame, and the support rod is slidably fitted inside the corresponding second sliding hole;

[0028] A movable seat fixed to the support rod is slidably arranged in the installation cavity inside the lateral adjustment seat, a second elastic member is arranged in the installation cavity inside the lateral adjustment seat, the second elastic member is fixed to the bottom of the movable seat, a second screw is fixedly arranged on the top of the lateral adjustment seat, a movable sleeve is slidably sleeved on the second screw, a limit frame is fixedly arranged on the top of the movable sleeve and slidably cooperates with the limit sleeves on both sides thereof, and an adjustment knob is rotatably arranged on the bottom of the movable sleeve and cooperates with the thread of the second screw.

[0029] The second positioning assembly also includes a rotating positioning plate, one end of the first elastic member is fixedly arranged on the top of the corresponding rotating positioning plate, the rotating positioning plate is rotatably arranged on the inner side of the corresponding third support frame, a mounting plate is fixedly arranged on the bottom of the rotating positioning plate, and the output shaft of the walking control motor on the mounting plate is fixed on the corresponding self-propelled wheel.

[0030] The beneficial effects of the present invention are as follows: the present invention installs a sealed cover on the drainage pipe through a sealed detection mechanism, thereby forming a sealed detection cavity on the outer wall of the drainage pipe, and inflates the sealed detection cavity through an inflation mechanism to increase the air pressure in the sealed cavity, and detects the air pressure change in the sealed detection cavity after inflation for a certain period of time through an air pressure sensor, and when the air pressure drop rate is greater than a preset value, it is determined that there is a leak on the outer wall of the drainage pipe corresponding to the sealed cover.

[0031] The sealed cover in the present invention is formed by splicing two semi-circular sealed cover segments, and the semi-circular sealed cover segment is equipped with a spacing adjustment mechanism that can adjust the distance between it and the drainage pipe. Through the spacing adjustment mechanism, the semi-circular sealed cover segment can be pressed against the outer wall of the drainage pipe when a closed detection cavity needs to be formed, and the semi-circular sealed cover segment can maintain a certain distance from the outer wall of the drainage pipe when the position needs to be moved, so as to facilitate the movement of the leakage point detection equipment along the drainage pipe.

[0032] The present invention rotates any one of the internal threaded adjustment rings on one side of the first fixed rod to cause the corresponding first pulley to rotate, and under the action of the first transmission belt, the other internal threaded adjustment ring can be rotated, thereby realizing the synchronous rotation of the two internal threaded adjustment rings on one side of the first fixed rod, and the threaded cooperation between the internal threaded adjustment ring and the second fixed rod realizes the synchronous upward movement of the positioning balls on the top of the two second fixed rods on one side of the first fixed rod until the positioning balls abut against the outer wall of the drainage pipe, and the same operation method is used to realize the positioning balls on the other side of the first fixed rod abutting against the outer wall of the drainage pipe, thereby realizing the position limitation of the drainage pipe between the positioning balls, and by adjusting the vertical distance between the positioning balls on the top of the first fixed rod and the positioning balls on the top of the second fixed rod, the positioning of drainage pipes with different diameters can be met.

[0033] When the positioning ball on the top of the first fixed rod is just fitted in the positioning cavity, the self-propelled wheel is close to the outer wall of the drainage pipe. If the positioning ball on the top of the first fixed rod is just fitted in the positioning cavity, the self-propelled wheel has not yet been close to the outer wall of the drainage pipe, the position of the rotating positioning plate can be adjusted by rotating the adjusting knob until the self-propelled wheel is close to the outer wall of the drainage pipe, and then the self-propelled wheel is moved horizontally toward the drainage pipe by rotating the first screw rod until the self-propelled wheel is against the outer wall of the drainage pipe. The positioning of the outer wall of the drainage pipe is further realized by each self-propelled wheel, thereby improving the installation efficiency of the positioning walking mechanism on the drainage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The present invention is a working schematic diagram of a water leakage point detection device used in municipal drainage pipes.

[0035] Figure 2 It is a schematic diagram of the structure of the water leakage point detection equipment used for municipal drainage pipes in the present invention.

[0036] Figure 3 It is a structural schematic diagram of the positioning walking mechanism in the present invention.

[0037] Figure 4 for Figure 3 The structural front view.

[0038] Figure 5 It is a structural schematic diagram of the airtight detection mechanism in the present invention.

[0039] Figure 6 It is a schematic structural diagram of the first supporting assembly in the present invention.

[0040] Figure 7 for Figure 6 Top view of the structure.

[0041] Figure 8 for Figure 6 Bottom view of the structure.

[0042] Fig. 9 It is a schematic structural diagram of the first positioning component in the present invention.

[0043] Fig.10 for Fig. 9 Side view of the structure.

[0044] Fig.11 It is a schematic structural diagram of the second supporting assembly in the present invention.

[0045] Fig.12 for Fig.11 Side view of the structure.

[0046] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0047] 1-sealed detection mechanism, 101-semicircular sealed cover section, 102-mounting frame, 103-third screw, 104-guide rod, 105-hollow plug-in, 106-connecting plate, 107-detection substrate, 108-air supply equipment, 109-air supply pipe, 110-sealed control motor, 2-positioning walking mechanism, 3-drainage pipe, 4-first support assembly, 401-lateral adjustment seat, 402-first support frame, 403-limiting groove, 404-first screw, 405-extension channel, 406-rope guide plate, 407-rope threading port, 408-first sliding hole, 409-positioning cavity, 410-second sliding hole, 411-second support frame, 5-first positioning assembly, 50 1-positioning ball, 502-first fixed seat, 503-second fixed seat, 504-first fixed rod, 505-second fixed rod, 506-inner thread adjustment ring, 507-connecting ring, 508-first pulley, 509-first transmission belt, 6-second support assembly, 601-first elastic member, 602-third support frame, 603-limiting sleeve, 604-support rod, 605-movable seat, 606-second elastic member, 607-second screw, 608-movable sleeve, 609-limiting frame, 610-adjusting knob, 7-second positioning assembly, 701-self-propelled wheel, 702-rotating positioning plate, 703-mounting plate, 704-travel control motor, 8-carrying frame. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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.

[0049] For specific embodiment 1, please refer to Figure 1-12 The present invention is a water leakage detection device for municipal drainage pipes, including a sealing detection mechanism 1, an inflation mechanism, an air pressure sensor, and a positioning walking mechanism 2.

[0050] The closed detection mechanism 1 includes two semi-circular arc closed cover segments 101 which are symmetrically arranged and move toward each other, and the semi-circular arc closed cover segments 101 are used to tightly abut against the outer wall of the drainage pipe 3 and form a closed detection cavity; the inflation mechanism can inflate the closed detection cavity to increase the air pressure in the closed cavity; the air pressure sensor can be used to collect air pressure data in the closed detection cavity; the positioning walking mechanism 2 is mounted on the drainage pipe 3, and the positioning walking mechanism 2 is symmetrically arranged on the front and rear sides of the closed detection mechanism 1, and the positioning walking mechanism 2 is fixedly connected to the closed detection mechanism 1.

[0051] The positioning walking mechanism 2 includes a first support assembly 4, a first positioning assembly 5, a second support assembly 6 and a second positioning assembly 7; the first support assembly 4 includes two side regulating seats 401 that are symmetrically arranged and move toward each other; the first positioning assembly 5 is slidably arranged on the first support assembly 4, and the first positioning assembly 5 is located between the two side regulating seats 401, and the first positioning assembly 5 includes a positioning ball 501;

[0052] The second support assembly 6 is arranged in one-to-one correspondence with the lateral adjustment seat 401, and the second support assembly 6 is installed on the corresponding lateral adjustment seat 401, and the second support assembly 6 includes a first elastic member 601 of an arc structure; the second positioning assembly 7 is arranged in one-to-one correspondence with the second support assembly 6, and the second positioning assembly 7 is rotatably arranged on the inner side of the corresponding second support assembly 6 and connected to the first elastic member 601, and the second positioning assembly 7 includes a self-propelled wheel 701;

[0053] By adjusting the positioning walking mechanism 2 on the front and rear sides, each positioning ball 501 is made to abut against the outer wall of the drainage pipe 3, and at the same time, each self-propelled wheel 701 is made to abut against the outer wall of the drainage pipe 3 (thereby the position of the entire positioning walking mechanism 2 on the drainage pipe 3 can be limited, so that the positioning walking mechanism 2 can move smoothly along the axial direction of the drainage pipe 3, and then the leakage point detection at each position of the entire drainage pipe 3 can be realized), and the two semi-circular arc closed cover sections 101 are tightly pressed against the outer wall of the drainage pipe 3 by adjusting the closed detection mechanism 1. At this time, the two semi-circular arc closed cover sections 101 fit each other to form a closed detection cavity.

[0054] In some embodiments, an inflation mechanism is used to inflate the sealed detection cavity to increase the air pressure inside the sealed cavity. An air pressure sensor is used to detect the change in air pressure in the sealed detection cavity after being inflated for a certain period of time. When the air pressure drop rate is greater than a preset value, it is determined that there is a leak on the outer wall of the drainage pipe corresponding to the sealed cover.

[0055] In other embodiments, one end of the drainage pipe 3 can be blocked, and air can be delivered into the closed detection cavity to observe whether there is airflow at the other end of the drainage pipe 3. When airflow is detected, it means that there is a leak in the drainage pipe 3 inside the closed detection cavity.

[0056] In this embodiment of the present invention, the first support assembly 4 also includes a first support frame 402, two limit grooves 403 are symmetrically arranged on the inner side of the first support frame 402, and the lateral adjustment seat 401 is fixedly connected to the slider inside the limit groove 403. The first support frame 402 has first screws 404 rotatably arranged on both sides of the relative sides, and the first screws 404 are threadedly matched with the corresponding lateral adjustment seats 401. By rotating the first screws 404, the lateral adjustment seat 401 can be moved on the inner side of the first support frame 402, and then the distance between the relatively arranged two lateral adjustment seats 401 can be adjusted to meet the use requirements of drainage pipes 3 with different diameters.

[0057] Two extension channels 405 are symmetrically arranged on the inner side of the first support frame 402, and the extension channels 405 are arranged one-to-one with the lateral adjustment seat 401. A rope guide plate 406 is fixedly arranged on the inner end of the extension channel 405, and a rope threading opening 407 is arranged at the bottom of the installation cavity inside the lateral adjustment seat 401, and the rope threading opening 407 is located on the inner side of the corresponding extension channel 405; a plurality of first sliding holes 408 are arranged on the inner side of the first support frame 402, and a positioning cavity 409 is arranged at the center position of the inner side of the first support frame 402, and the positioning cavity 409 and the corresponding first sliding hole 408 are arranged coaxially, and a second sliding hole 410 connected with the internal installation cavity thereof is arranged on the top of the lateral adjustment seat 401, and a second support frame 411 is fixedly arranged on the bottom of the first support frame 402, and a third sliding hole corresponding to the first sliding hole 408 is arranged on the surface of the second support frame 411.

[0058] In this embodiment of the present invention, the first positioning assembly 5 also includes a first fixed seat 502 and a second fixed seat 503, the first fixed seat 502 and the second fixed seat 503 are both located on the inner side of the second support frame 411, and a traction rope is fixed on both opposite sides of the second fixed seat 503, and the movable end of the traction rope passes through the guide rope plate 406 and the rope threading port 407 in turn and extends to the installation cavity inside the lateral control seat 401, and a first fixing rod 504 is fixedly arranged on the top of the first fixed seat 502, and the first fixing rod 504 is fixedly connected to the second fixed seat 503, and the first fixing A second fixing rod 505 is slidably arranged between the seat 502 and the second fixing seat 503, and the first fixing rod 504 and the second fixing rod 505 are both fixedly connected to the corresponding positioning ball 501; the first fixing rod 504 is slidably matched with the corresponding first sliding hole 408, and the second fixing rod 505 is slidably matched with the corresponding first sliding hole 408 and the third sliding hole. In the initial state, the second fixing seat 503 is against the bottom of the first support frame 402 under the action of the traction rope, and the positioning ball 501 on the first fixing rod 504 is located above the positioning cavity 409.

[0059] In this embodiment of the present invention, an internally threaded adjustment ring 506 corresponding to the second fixed rod 505 is rotatably provided on the top of the first fixed seat 502. The internally threaded adjustment ring 506 is sleeved on the corresponding second fixed rod 505 and the two are threadedly matched. A connecting ring 507 is fixedly provided on the top of the internally threaded adjustment ring 506. A first pulley 508 coaxial with the connecting ring 507 is fixedly provided on the top of the connecting ring 507. The two first pulleys 508 on the same side of the first fixed rod 504 are connected by a first transmission belt 509. By rotating any one of the internally threaded adjustment rings 506 on one side of the first fixed rod 504, the corresponding first pulley 508 is rotated. Under the action of the first transmission belt 509, the other internal thread adjustment ring 506 can be rotated, and then the two internal thread adjustment rings 506 on one side of the first fixed rod 504 can be rotated synchronously. Under the thread cooperation between the internal thread adjustment ring 506 and the second fixed rod 505, the positioning balls 501 on the top of the two second fixed rods 505 on one side of the first fixed rod 504 can be moved upward synchronously until the positioning balls 501 abut against the outer wall of the drainage pipe 3. The same operation method can be used to achieve the positioning balls 501 on the other side of the first fixed rod 504 abutting against the outer wall of the drainage pipe 3, thereby realizing the position limitation of the drainage pipe 3 between each positioning balls 501.

[0060] In this embodiment of the present invention, the second support assembly 6 further includes a third support frame 602, the first elastic member 601 is arranged inside the third support frame 602, a limiting sleeve 603 coaxial with the second sliding hole 410 is fixedly arranged at the bottom of the third support frame 602, and a support rod 604 located inside the corresponding limiting sleeve 603 is fixedly arranged at the bottom of the third support frame 602, and the support rod 604 is slidably fitted inside the corresponding second sliding hole 410;

[0061] A movable seat 605 fixed to the support rod 604 is slidably arranged in the installation cavity inside the lateral adjustment seat 401, and a second elastic member 606 is arranged in the installation cavity inside the lateral adjustment seat 401. The second elastic member 606 is fixed to the bottom of the movable seat 605. The movable end of the traction rope sequentially passes through the rope guide plate 406 and the rope threading port 407 to extend to the installation cavity inside the lateral adjustment seat 401, and is fixed to the corresponding bottom of the movable seat 605. In the initial state, the second fixed seat 503 is pressed against the bottom of the first support frame 402 by the elastic force of the second elastic member 606 and the connection of the traction rope. A second screw rod 607 is fixedly provided on the top of the lateral regulating seat 401, and a movable sleeve 608 is slidably sleeved on the second screw rod 607. A limit frame 609 is fixedly provided on the top of the movable sleeve 608 and slidably cooperates with the limit sleeves 603 on both sides thereof, and an adjusting knob 610 is rotatably provided on the bottom of the movable sleeve 608 and threadably cooperates with the second screw rod 607; when the limit frame 609 abuts against the bottom of the third support frame 602, the third support frame 602 cannot be driven to continue to move downward under the pulling force of the traction rope, that is, the limit frame 609 at this time plays a limiting role on the third support frame 602.

[0062] In this embodiment of the present invention, the second positioning assembly 7 also includes a rotating positioning plate 702, one end of the first elastic member 601 is fixedly arranged on the top of the corresponding rotating positioning plate 702, the rotating positioning plate 702 is rotatably arranged on the inner side of the corresponding third support frame 602, and a mounting plate 703 is fixedly arranged at the bottom of the rotating positioning plate 702. The output shaft of the travel control motor 704 on the mounting plate 703 is fixed on the corresponding self-propelled wheel 701. When the self-propelled wheel 701 is tightly against the outer wall of the drainage pipe 3, the self-propelled wheel 701 is driven to rotate by starting the travel control motor 704, so that the entire water leakage detection equipment can be driven to move axially along the drainage pipe 3, thereby realizing the detection of water leakage points at different positions on the outer wall of the drainage pipe 3. In the initial state, the rotating positioning plate 702 is attached to the inner bottom of the third support frame 602 under the elastic force of the first elastic member 601. When the rotating positioning plate 702 is subjected to a downward thrust, the rotating positioning plate 702 can be driven to rotate downward, thereby driving the first elastic member 601 to be compressed and stored energy.

[0063] The installation process of the positioning walking mechanism 2 on the drainage pipe 3 is as follows:

[0064] First, place the drainage pipe 3 between the two supporting frames 8, place the positioning walking mechanism 2 under the drainage pipe 3 and push the entire positioning walking mechanism 2 upwards, and when the drainage pipe 3 contacts the two rotating positioning plates 702, the two rotating positioning plates 702 are pushed to rotate downwards at the same time. During this process, the first elastic member 601 is squeezed and compressed by the rotating positioning plates 702 until the drainage pipe 3 crosses the two rotating positioning plates 702 and enters between the two side regulating seats 401 on the inner side of the first supporting frame 402. At this time, the drainage pipe 3 is separated from the two rotating positioning plates 702, and the elastic restoring force of the first elastic member 601 causes the rotating positioning plates 702 to rotate upwards to complete the reset, and the two rotating positioning plates 702 return to a horizontal state after the reset is completed;

[0065] Next, the adjusting knob 610 is turned, and the threaded matching relationship between the adjusting knob 610 and the second screw 607 is used to drive the movable sleeve 608 to move downward along the second screw 607 until the limiting frame 609 moves to the desired position. At this time, the limiting frame 609 is separated from the bottom of the third support frame 602, and the entire positioning walking mechanism 2 is continuously pushed upward. When the drainage pipe 3 is pressed against the positioning ball 501 at the top of the first fixing rod 504, the second fixing seat 503 is driven to move downward and separate from the first support under the squeezing effect of the drainage pipe 3. The bottom of the frame 402 is moved upward until the first fixing seat 502 is attached to the bottom of the second support frame 411 (the positioning ball 501 on the top of the first fixing rod 504 is fitted in the positioning cavity 409). If the positioning ball 501 on the top of the second fixing rod 505 does not abut against the outside of the drainage pipe 3, the second fixing rod 505 is moved upward by rotating the internal thread adjustment ring 506 until the positioning ball 501 on the top of the second fixing rod abuts against the outside of the drainage pipe 3. At this time, the preliminary positioning of each positioning ball 501 on the outer wall of the drainage pipe 3 is completed;

[0066] When the drainage pipe 3 squeezes the positioning ball 501 on the top of the first fixing rod 504, the second fixing seat 503 moving downward drives the traction rope to move downward synchronously. Under the pulling force of the traction rope, the moving seat 605 moves downward and compresses the second elastic member 606. Under the action of the support rod 604, the rotating positioning plate 702 on the third support frame 602 moves downward. When the positioning ball 501 on the top of the first fixing rod 504 just fits in the positioning cavity 409, the self-propelled wheel 701 is close to the outer wall of the drainage pipe 3. When the positioning ball 501 at the top of the rod 504 is just fitted in the positioning cavity 409, the self-propelled wheel 701 has not yet approached the outer wall of the drainage pipe 3, the position of the rotating positioning plate 702 can be adjusted by turning the adjusting knob 610 until the self-propelled wheel 701 approaches the outer wall of the drainage pipe 3, and then the self-propelled wheel 701 is moved horizontally toward the drainage pipe 3 by turning the first screw 404 until the self-propelled wheel 701 abuts against the outer wall of the drainage pipe 3, thereby further realizing the positioning of the outer wall of the drainage pipe 3 through each self-propelled wheel 701;

[0067] Finally, after the self-propelled wheels 701 are against the outer wall of the drainage pipe 3, each positioning ball 501 is also against the outer wall of the drainage pipe 3, and the adjustment knob 610 is continued to be turned to make the limit frame 609 fit again to the bottom of the third support frame 602. At this time, the installation and positioning of the front and rear positioning walking mechanisms 2 on the outer wall of the drainage pipe 3 are completed.

[0068] Specific embodiment 2, on the basis of specific embodiment 1, the airtight detection mechanism 1 further includes two symmetrically arranged T-shaped mounting frames 102, the mounting frames 102 are fixedly connected to the lateral adjustment seats 401 on the front and rear sides thereof, and the mounting frames 102 are provided with a third screw 103 and a guide rod 104 on one side close to the semicircular arc airtight cover section 101, the third screw 103 is rotatably connected to the corresponding mounting frame 102, and the guide rod 104 is fixedly connected to the corresponding mounting frame 102;

[0069] A hollow insert 105 is slidably sleeved on the guide rod 104, and the hollow insert 105 is plugged and matched with the corresponding semi-circular arc sealed cover section 101. Through this plug-in method, the semi-circular arc sealed cover section 101 of the corresponding size can be replaced according to the diameter of the drainage pipe 3. A connecting plate 106 that is threadedly matched with the corresponding third screw rod 103 is fixedly arranged between the two hollow inserts 105, and a detection substrate 107 is fixedly arranged on the surface of one of the connecting plates 106. The air outlet of the air supply device 108 installed on the detection substrate 107 is connected to the air supply pipe 109, and the air supply pipe 109 is tightly plugged and matched with the air inlet on the side of the corresponding semi-circular arc sealed cover section 101. When the two semi-circular arc sealed cover segments 101 are tightly fitted together, air can be transported to the inside of the closed detection cavity formed by the two semi-circular arc sealed cover segments 101 by starting the air supply device 108. When airflow is observed at the unblocked end of the drainage pipe 3, it means that there is a leak in the drainage pipe 3 on the inner side of the closed detection cavity. If no airflow is observed, it means that there is no leak in the drainage pipe 3 on the inner side of the closed detection cavity. At this time, the walking control motor 704 is started to make the self-propelled wheels 701 move along the outer wall of the drainage pipe 3 to the next detection point, and the detection of the next detection point is completed in the same way.

[0070] In this embodiment of the present invention, a closed control motor 110 is installed on the surface of the mounting frame 102 corresponding to the air supply equipment 108, and the output end of the closed control motor 110 is fixedly connected to the corresponding third screw 103, and a second pulley is fixedly arranged on the peripheral side of the third screw 103; a linkage shaft is rotatably arranged between the two relatively arranged mounting frames 102, and a third pulley corresponding to the second pulley is fixedly arranged on the linkage shaft, and the third pulley is connected to the corresponding second pulley through a second transmission belt; after starting the closed control motor 110, the corresponding third screw 103 is controlled to rotate by the closed control motor 110, and then the synchronous rotation of the two third screws 103 is simultaneously realized by the second pulley, the linkage shaft and the third pulley, and then the synchronous relative movement of the two relatively arranged connecting plates 106 can be realized, thereby making the hollow insert 105 move together with the connecting plate 106.

[0071] The installation process of the semicircular arc sealed cover section 101 on the drainage pipe 3 is as follows:

[0072] After completing the installation and positioning of the positioning walking mechanism 2 on the outer wall of the drainage pipe 3 on the front and rear sides, one of the semi-circular arc sealed cover segments 101 is attached to the outer wall of the drainage pipe 3 from top to bottom, and the semi-circular arc sealed cover segment 101 is rotated along the outer wall of the drainage pipe 3 so that the semi-circular arc sealed cover segment 101 is rotated to the bottom of the drainage pipe 3, and then the other semi-circular arc sealed cover segment 101 is attached to the outer wall of the drainage pipe 3 from top to bottom, and after the two semi-circular arc sealed cover segments 101 are abutted together to form a circular structure, the two semi-circular arc sealed cover segments 101 are rotated synchronously until the semi-circular arc sealed cover segment 101 corresponding to the air supply pipe 109 rotates to the corresponding position, and the other semi-circular arc sealed cover segment 101 rotates to the specified position, at this time, the closed control motor 110 is started so that one end of the hollow plug-in component 105 is plugged into The corresponding semi-circular arc sealed cover segment 101 is on the outer wall of the drainage pipe 3, thereby realizing the position limitation of the two semi-circular arc sealed cover segments 101 on the outer wall of the drainage pipe 3. At this time, the air supply pipe 109 is inserted into the air inlet on the side of the semi-circular arc sealed cover segment 101, and the closed control motor 110 continues to operate to move the hollow plug-in component 105 toward the center of the drainage pipe 3 until the semi-circular arc sealed cover segment 101 is pushed to be tightly against the outer wall of the drainage pipe 3. Thus, the two semi-circular arc sealed cover segments 101 are tightly against the drainage pipe 3 to form a closed detection cavity. When the next detection point needs to be detected, it is necessary to first control the closed control motor 110 to operate so that the two semi-circular arc sealed cover segments 101 are separated from the outer wall of the drainage pipe 3. At this time, the semi-circular arc sealed cover segment 101 will not hinder the movement of the entire leakage point detection equipment.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A water leakage detection device for municipal drainage pipes, characterized in that: include: The airtight detection mechanism (1) comprises an airtight cover which can be mounted on the drainage pipe (3), the airtight cover can form an airtight detection cavity on the outer wall of the drainage pipe (3), the airtight cover is formed by splicing two semi-circular arc airtight cover sections (101), and the semi-circular arc airtight cover section (101) is provided with a spacing adjustment mechanism which can adjust the spacing between the semi-circular arc airtight cover section (101) and the drainage pipe (3); An inflating mechanism connected to the airtight cover, the inflating mechanism can inflate the airtight detection cavity to increase the air pressure in the airtight chamber; An air pressure sensor is connected to the sealed cover, and the air pressure sensor can be used to collect air pressure data in the sealed detection cavity; A positioning walking mechanism (2) is arranged at the front and / or rear side of the airtight detection mechanism (1); the positioning walking mechanism (2) can be sleeved on the drainage pipe (3) and has at least one self-propelled wheel (701) that can contact the outer wall of the drainage pipe (3), and a travel control motor (704) that cooperates with the self-propelled wheel (701).

2. The water leakage detection device for municipal drainage pipes according to claim 1 is characterized in that: The spacing adjustment mechanism comprises a first support assembly (4), a mounting frame (102) and a telescopic mechanism; The first support assembly (4) comprises two side-adjustable seats (401) which are symmetrically arranged and move towards each other. The two side-adjustable seats (401) on the first support assembly (4) are connected to a section of the semicircular arc sealed cover section (101) in sequence via a mounting frame (102) and a telescopic mechanism.

3. The water leakage detection device for municipal drainage pipes according to claim 2 is characterized in that: The telescopic mechanism comprises a sealed control motor (110), a third screw rod (103), a telescopic rod and a connecting plate (106); the telescopic rod comprises a guide rod (104) and a hollow insert (105) slidably sleeved on the guide rod (104); A third screw rod (103) and a guide rod (104) are provided on one side of the mounting frame (102) close to the semicircular sealed cover; the third screw rod (103) is rotatably connected to the corresponding mounting frame (102), and the guide rod (104) is fixedly connected to the corresponding mounting frame (102); the output end of the sealed control motor (110) is fixedly connected to the corresponding third screw rod (103); The hollow insert (105) is plug-fitted with the corresponding semicircular sealed cover, and the hollow insert (105) is fixedly connected with a connecting plate (106) threadably matched with the corresponding third screw rod (103).

4. The water leakage detection device for municipal drainage pipes according to claim 3 is characterized in that: A second pulley is fixedly arranged on the peripheral side of the third screw rod (103); a linkage shaft is rotatably arranged between the two mounting frames (102) arranged opposite to each other, and a third pulley corresponding to the second pulley is fixedly arranged on the linkage shaft, and the third pulley is connected to the corresponding second pulley via a second transmission belt.

5. The water leakage detection device for municipal drainage pipes according to claim 3 is characterized in that: A detection substrate (107) is fixedly provided on the surface of the connection plate (106), and an air supply device (108) in the inflation mechanism is installed on the detection substrate (107). The air outlet of the air supply device (108) is connected to an air supply pipe (109), and the air supply pipe (109) is tightly plugged into the air inlet on the circumferential side of the corresponding semicircular arc sealed cover section (101).

6. The water leakage detection device for municipal drainage pipes according to claim 1, characterized in that: The positioning walking mechanism (2) comprises: A first support assembly (4), the first support assembly (4) comprising two side-adjustable seats (401) symmetrically arranged and movable towards each other; A first positioning component (5), the first positioning component (5) is slidably arranged on the first supporting component (4), and the first positioning component (5) is located between the two lateral regulating seats (401), and the first positioning component (5) comprises a positioning ball (501); A second support assembly (6), the second support assembly (6) being arranged in one-to-one correspondence with the lateral adjustment seat (401), the second support assembly (6) being mounted on the corresponding lateral adjustment seat (401), and the second support assembly (6) comprising a first elastic member (601) of an arc-shaped structure; And a second positioning assembly (7), the second positioning assembly (7) is arranged in a one-to-one correspondence with the second supporting assembly (6), the second positioning assembly (7) is rotatably arranged on the inner side of the corresponding second supporting assembly (6) and is connected to the first elastic member (601), and the second positioning assembly (7) includes the self-propelled wheel (701).

7. The water leakage detection device for municipal drainage pipes according to claim 2 or 6, characterized in that: The first support assembly (4) also includes a first support frame (402), two limiting grooves (403) are symmetrically arranged on the inner side of the first support frame (402), the lateral adjustment seat (401) is fixedly connected to the slider inside the limiting groove (403), and first screw rods (404) are rotatably arranged on opposite sides of the first support frame (402), and the first screw rods (404) are threadedly matched with the corresponding lateral adjustment seat (401).

8. The water leakage detection device for municipal drainage pipes according to claim 7, characterized in that: Two extension channels (405) are symmetrically arranged on the inner side of the first support frame (402), and the extension channels (405) are arranged one-to-one correspondingly with the lateral adjustment seat (401). A rope guide plate (406) is fixedly arranged at the inner end of the extension channel (405), and a rope threading opening (407) is arranged at the bottom of the installation cavity inside the lateral adjustment seat (401), and the rope threading opening (407) is located on the inner side of the corresponding extension channel (405); A plurality of first sliding holes (408) are arranged on the inner side of the first support frame (402); a positioning cavity (409) is arranged at the center position of the inner side of the first support frame (402); the positioning cavity (409) and the corresponding first sliding hole (408) are arranged coaxially; a second sliding hole (410) connected to the internal mounting cavity of the lateral regulating seat (401) is arranged on the top; a second supporting frame (411) is fixedly arranged on the bottom of the first supporting frame (402); and a third sliding hole corresponding to the first sliding hole (408) is arranged on the surface of the second supporting frame (411).

9. The water leakage detection device for municipal drainage pipes according to claim 6, characterized in that: The first positioning assembly (5) further comprises a first fixing seat (502) and a second fixing seat (503), wherein the first fixing seat (502) and the second fixing seat (503) are both located on the inner side of the second supporting frame (411), a first fixing rod (504) is fixedly arranged on the top of the first fixing seat (502), the first fixing rod (504) and the second fixing seat (503) are fixedly connected, a second fixing rod (505) is slidably arranged between the first fixing seat (502) and the second fixing seat (503), and the first fixing rod (504) and the second fixing rod (505) are both fixedly connected to the corresponding positioning ball (501); the first fixing rod (504) and the corresponding first sliding hole (408) are slidably matched, and the second fixing rod (505) and the corresponding first sliding hole (408) and the third sliding hole are slidably matched.

10. The water leakage detection device for municipal drainage pipes according to claim 9, characterized in that: An internal threaded adjustment ring (506) corresponding to the second fixed rod (505) is rotatably provided on the top of the first fixed seat (502); the internal threaded adjustment ring (506) is sleeved on the corresponding second fixed rod (505) and the two are threadedly matched; a connecting ring (507) is fixedly provided on the top of the internal threaded adjustment ring (506); a first pulley (508) coaxial with the connecting ring (507) is fixedly provided on the top of the connecting ring (507); the two first pulleys (508) on the same side of the first fixed rod (504) are connected via a first transmission belt (509).

11. The water leakage detection device for municipal drainage pipes according to claim 6, characterized in that: The second support assembly (6) further comprises a third support frame (602), the first elastic member (601) being arranged inside the third support frame (602), a limiting sleeve (603) coaxial with the second sliding hole (410) being fixedly arranged at the bottom of the third support frame (602), a supporting rod (604) located inside the corresponding limiting sleeve (603) being fixedly arranged at the bottom of the third support frame (602), and the supporting rod (604) being slidably fitted inside the corresponding second sliding hole (410); A movable seat (605) fixed to the support rod (604) is slidably arranged in the installation cavity inside the lateral adjustment seat (401); a second elastic member (606) is arranged in the installation cavity inside the lateral adjustment seat (401); the second elastic member (606) is fixed to the bottom of the movable seat (605); a second screw rod (607) is fixedly arranged on the top of the lateral adjustment seat (401); a movable sleeve (608) is slidably sleeved on the second screw rod (607); a limit frame (609) slidably matched with the limit sleeves (603) on both sides thereof is fixedly arranged on the top of the movable sleeve (608); an adjustment knob (610) threadably matched with the second screw rod (607) is rotatably arranged at the bottom of the movable sleeve (608).

12. The water leakage detection device for municipal drainage pipes according to claim 6, characterized in that: The second positioning assembly (7) also includes a rotating positioning plate (702), one end of the first elastic member (601) is fixedly arranged on the top of the corresponding rotating positioning plate (702), the rotating positioning plate (702) is rotatably arranged on the inner side of the corresponding third support frame (602), a mounting plate (703) is fixedly arranged on the bottom of the rotating positioning plate (702), and the output shaft of the walking control motor (704) on the mounting plate (703) is fixed on the corresponding self-propelled wheel (701).

Images