CN113465824A - Pipeline leakage detection system - Google Patents

Abstract

The invention relates to a pipeline leakage detection system, which comprises a detection mechanism and a winding mechanism, wherein the detection mechanism comprises a first winding mechanism and a second winding mechanism; the detection mechanism is positioned in the pipeline; the winding mechanism is arranged on a branch pipe of the pipeline; the detection mechanism is provided with an LED lamp, a camera unit, a recording unit, a PLC (programmable logic controller), a tracer, a memory and a power supply; the PLC is respectively connected with an LED lamp, a camera unit, a recording unit, a tracer, a memory and a power supply electric signal; the winding mechanism comprises a winding platform arranged on the branch pipe and a retractor fixed on the winding platform; the retractor comprises a retractor shell with a horizontal axis and a hollow interior; the upper end of the furling shell is communicated with a horizontal hollow furling outlet along the tangential direction; a winding shaft is rotatably arranged at the axis of the winding shell, and two ends of the winding shaft penetrate through two side walls of the winding shell; a traction rope is wound on the winding shaft, and the tail end of the traction rope is fixed with the detection mechanism after the traction rope slides out of the winding outlet.

Description

Pipeline leakage detection system

Technical Field

The invention relates to a pipeline leakage detection system, and belongs to the technical field of pipeline detection.

Background

The underground drainage pipeline is an important way for removing urban sewage and rainwater, the criss-cross underground drainage pipeline is an extremely important municipal facility, plays an irreplaceable role in the stable development of cities, and the normal operation of the underground drainage pipeline is an important guarantee for ensuring the normal order of the production and the life of the cities. With the continuous promotion of urban construction, the problems of aging and leakage of underground drainage pipelines frequently occur, so that the problems of water accumulation, collapse and the like of partial roads are serious, and great troubles are brought to the quality of life of people. In order to ensure the normal operation of the pipeline and to improve the service life of the pipeline, it is necessary to know the internal conditions of the pipeline frequently, but since most of the pipelines are embedded under the ground or in the wall of a building, the internal space of the pipeline is narrow, the environment is complex and there is a danger source, so that the internal conditions of the pipeline are monitored in real time by collecting the internal images and data of the pipeline through a monitoring device such as a camera.

For example, chinese utility model patent No. CN209705738U entitled "detection system without traction duct" relates to a detection system without traction duct, which includes a detection device placed in a duct and a bobbin disposed outside the duct and connected to the detection device through a cable; the detection device comprises a camera assembly connected with the cable through an electric signal, a protection mechanism sleeved outside the camera assembly and at least two groups of moving mechanisms detachably fixed outside the protection mechanism; the camera shooting assembly comprises a camera and an illuminating lamp for providing a light source for the camera; the protection mechanism comprises a protection sleeve sleeved outside the camera shooting assembly and a sealing cover sleeved in one end of the protection sleeve far away from the winding frame; the middle part of the sealing cover is provided with an avoidance hole for the camera to observe, and the lower end of the sealing cover is provided with a notch for the light emitted by the illuminating lamp to pass through; the moving mechanism comprises a fixed ring detachably fixed on the outer wall of the protection mechanism and at least three supporting arms; one end of the supporting arm is hinged on the outer wall of the fixing ring, and the other end of the supporting arm is hinged with a wheel; the wheel is tightly attached to the inner wall of the pipeline.

However, in the above traction-free pipeline detection system, the detection device is only provided with the camera and the searchlight, and no other detection component is provided, so that the detection device can only collect images and data inside the pipeline, and cannot further detect other conditions inside the pipeline; secondly, the data that the camera was gathered still need carry signal reception terminal again through the video data line in the cable, will make the cable conductor need do comparatively thick like this, just can hold and guarantee the safety of the video data line in the cable, and then makes the bobbin of winding cable need do very greatly, greatly reduced the portability.

Disclosure of Invention

In order to overcome the problems, the invention provides a pipeline leakage detection system which mainly comprises a detection mechanism and a winding mechanism, wherein the detection mechanism is internally provided with a camera unit, a recording unit, a PLC (programmable logic controller), a tracer, a memory and other parts, can comprehensively and completely acquire data information in a pipeline and temporarily stores the data information in the memory; meanwhile, the traction wire only plays a role in traction, a built-in data wire is not needed, the weight of the wire can be greatly reduced, the size of the winding frame is reduced, and the mobility and the portability are improved.

The technical scheme of the invention is as follows:

a pipeline leakage detection system comprises a detection mechanism and a winding mechanism; the detection mechanism is positioned in the pipeline; the furling mechanism is arranged on the branch pipe of the pipeline; the detection mechanism is provided with an LED lamp, a camera unit, a recording unit, a PLC (programmable logic controller), a tracer, a memory and a power supply; the PLC is respectively connected with the LED lamp, the camera unit, the recording unit, the tracer, the memory and the power supply electric signal; the winding mechanism comprises a winding platform arranged on the branch pipe and a retractor fixed on the winding platform; the retractor comprises a retractor shell with a horizontal axis and a hollow interior; the upper end of the furling shell is communicated with a horizontal hollow furling outlet along the tangential direction; a winding shaft is rotatably arranged at the axis of the winding shell, and two ends of the winding shaft penetrate through two side walls of the winding shell; and a traction rope is wound on the furling shaft, and the tail end of the traction rope is fixed with the detection mechanism after the traction rope penetrates out of the furling outlet in a sliding manner.

Further, the furling platform comprises a horizontal platform bottom plate and a platform side plate vertically fixed at the upper end of one side of the platform bottom plate; the lower end of the furling shell is fixed with the platform bottom plate; the tail end of the furling shaft is rotatably arranged on the platform side plate; a fixed screw is vertically fixed at the lower end of the platform bottom plate; the fixed screw is fixed on the upper flange of the branch pipe in a threaded manner; the pull rope is marked with scale marks, and the zero scale marks are positioned at the joint of the pull rope and the detection mechanism.

Further, the detection mechanism comprises a front shell and a rear shell arranged behind the front shell; the front shell is of a streamline structure with a small front part and a big back part; the front housing comprises a front housing body, a lens and a rear plate; the front shell main body is hollow, and the front end of the front shell main body is arranged in an open mode; the transparent lens is fixed on the open end of the front shell main body; the rear plate is fixed at the rear end of the front shell main body in a closed manner; the rear shell comprises a rear shell main body and a rear cover; the rear shell main body is horizontally hollow, the front end of the rear shell main body is connected with the rear plate, and the rear end of the rear shell main body is arranged in an open manner; the rear cover is covered and fixed at the open end of the rear shell main body; the LED lamps are uniformly arranged at the front end of the front shell main body at intervals and are circularly arrayed on the periphery of the lens; the camera shooting unit and the sound recording unit are both accommodated in the front shell main body, and the camera shooting unit is positioned behind the lens; the periphery of the front end of the front shell main body is also provided with a temperature sensor and a pressure sensor respectively; the temperature sensor and the pressure sensor are respectively in electric signal connection with the PLC; the power supply, the PLC, the tracer and the memory are all arranged in the rear shell main body; the lower part of the inner side of the rear shell main body is also provided with a balancing weight; the traction rope is fixed with the rear cover; the periphery of the middle part of the front shell is coated with a rubber sleeve.

Furthermore, a rear connecting groove is formed in the middle of the rear end of the rear plate; a connecting rod is fixed at the front end of the rear shell main body; a connecting ball is fixed at the front end of the connecting rod; the connecting ball is accommodated in the rear connecting groove, and the connecting ball can move in the rear connecting groove.

Furthermore, a wing plate is arranged at the rear end of the rear plate; the wing plates are in a circular array and are uniformly arranged at intervals; the tail ends of the wing plates are arranged in a diffused mode; the tail end of the wing plate is also provided with a plurality of sawtooth grooves.

Furthermore, a plurality of wheel grooves are uniformly arranged on the periphery of the tail end of the front shell main body at intervals; a pulley is rotatably arranged in each pulley groove; the outer side of the pulley protrudes out of the outer surface of the front shell main body.

Further, the power supply is arranged close to the rear cover; the power supply comprises a contact switch, an elastic sheet and an operating bolt; the contact switch is in electrical signal connection with the PLC; the contact switch is fixed in the rear shell; after the operating bolt penetrates through the rear cover from outside to inside, the tail end of the operating bolt is positioned below the rear side of the contact switch; a convex block is fixed in the middle of one side of the contact switch, which is close to the rear cover; the middle part of the elastic sheet is hinged with the lug; one end of the elastic sheet is fixed with the operating bolt, and the other end of the elastic sheet can be in contact with the contact switch.

Further, the platform comprises a tensioning mechanism arranged on the platform side plate; the tensioning mechanism comprises a rocker arm, a tensioning screw rod, an adjusting knob, a belt, a driving wheel, a driven wheel and a motor; the platform side plate is provided with a transversely through arc-shaped adjusting groove; one end of the rocker arm is hinged to the platform side plate, and the other end of the rocker arm is fixed with the tensioning screw rod; the tensioning screw rod transversely penetrates through the adjusting groove; the tensioning screw rod can rotate around the hinged position of the rocker arm and the platform side plate and slide in the adjusting groove; the adjusting knob is fixed on the tensioning screw in a threaded manner, and the adjusting knob and the rocker arm are respectively arranged on two sides of the platform side plate; the motor is fixed at the tail end of the rocker arm; the driving wheel is fixed on the output shaft of the motor; the driven wheel is fixed on the furling shaft; the driving wheel is in transmission connection with the driven wheel through the belt.

Further, the device also comprises a synchronizing mechanism arranged on the furling shell; the synchronous mechanism comprises a synchronous support, a driven shaft, a driving bevel gear, a driven bevel gear, an upper side plate, a sliding rod, a driving rod, a driven rod and a stabilizer; the synchronous support is fixed on the upper part of the furling shell close to one side of the platform side plate; the vertical driven shaft is rotatably arranged on the synchronous bracket; the driving bevel gear is fixed on the furling shaft; the driven bevel gear is fixed on the driven shaft and is meshed with the driving bevel gear; the upper end of the driven shaft penetrates out of the upper end of the synchronous support and then is fixed with one end of the driving rod; the two upper side plates are respectively vertically fixed at the upper ends of the two sides of the furling shell; two ends of the horizontal sliding rod are respectively arranged at the upper ends of the inner sides of the two upper side plates; the stabilizer is arranged on the sliding rod in a sliding manner; an avoidance groove is transversely arranged on the upper side plate close to one side of the platform side plate in a through manner; one end of the driven rod is hinged with the driving rod, the middle part of the driven rod penetrates through the avoidance groove, and the other end of the driven rod is hinged with the lower end of the stabilizer; the pull-cord slides through the stabilizer.

Further, the stabilizer comprises a sliding block, an extension rod and a hanging ring; the sliding block is sleeved on the sliding rod in a sliding manner; the lower end of the sliding block is hinged with the tail end of the driven rod; one end of the extension rod is fixed on the sliding block, and the other end of the extension rod is suspended in front of the furling outlet; the lifting ring is fixed below the tail end of the extension rod; the lifting ring is right opposite to the front of the furling outlet, and the traction rope penetrates through the lifting ring in a sliding mode.

The invention has the following beneficial effects:

1. the pipeline leakage detection system mainly comprises a detection mechanism and a winding mechanism, wherein the detection mechanism is internally provided with a camera unit, a recording unit, a PLC (programmable logic controller), a tracer, a memory and other parts, can comprehensively and completely acquire data information in the pipeline and temporarily store the data information in the memory; meanwhile, the traction wire only plays a role in traction, a built-in data wire is not needed, the weight of the wire can be greatly reduced, the size of the winding frame is reduced, and the mobility and the portability are improved.

2. The rear connecting groove is spherical shell-shaped and can wrap the connecting ball to prevent the connecting ball from falling off; the connecting ball also can move in the rear connecting groove, so that a certain angle can be formed between the front shell and the rear shell, the rear shell can swing, and the detection mechanism is convenient to clamp through corners.

3. The elastic sheet and the lug form a lever, after the operating bolt is screwed and the tail end of the operating bolt pushes the lower end of the elastic sheet, the upper end of the elastic sheet is separated, the contact switch is disconnected, the power supply is in an open-close state, and power is not supplied to each unit in the detection mechanism. After the operating bolt is unscrewed and the lower end of the elastic sheet is pulled at the tail end of the operating bolt, the upper end of the elastic sheet presses the contact switch, the contact switch is switched on, the power supply is switched on, power supply is started for each unit in the detection mechanism, and the pipeline leakage detection system starts to work.

4. Set up straining device, the tensioning screw rod can slide in the adjustment tank around the articulated department of rocking arm and platform curb plate to adjust the tensioning degree of belt, with the motor of adaptation different rivers environment, perhaps under the different rotational speed condition, guarantee the rotational speed of roll-up axle steady, ensure that detection mechanism is in stability, the good of receiving and releasing the condition.

5. The synchronous mechanism and the stabilizer mainly move back and forth on the sliding rod through the sliding block and further drive the lifting ring to move back and forth in front of the winding outlet, so that when the traction rope is wound and unwound by the winding shaft, the traction rope is distributed more uniformly on the winding shaft, and the traction rope is convenient to store.

Drawings

Fig. 1 is a schematic view of the present invention in use.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic structural diagram of the detection mechanism of the present invention.

Fig. 4 is a front view of fig. 3.

Fig. 5 is a top view of fig. 3.

Fig. 6 is a partial sectional view of the detection mechanism.

Fig. 7 is a partially enlarged view of a portion a of fig. 6.

Fig. 8 is a schematic view of the internal structure of the rear case.

Fig. 9 is a partial enlarged view of fig. 8 at B.

Fig. 10 is a schematic structural view of the retracting mechanism of the present invention.

Fig. 11 is a partial enlarged view of fig. 10 at C.

Fig. 12 is a schematic structural view of another angle of the retracting mechanism.

Fig. 13 is a partial enlarged view of fig. 12 at D.

Fig. 14 is a partial enlarged view at E of fig. 12.

Fig. 15 is a front view of fig. 12.

Fig. 16 is a right side view of fig. 12.

Fig. 17 is a top view of fig. 12.

The reference numbers in the figures denote:

1. a pipeline; 11. a branch pipe; 12. an upper flange; 2. a detection mechanism; 21. a front housing; 211. a front housing main body; 212. a lens; 213. a back plate; 214. a wheel groove; 215. a rear connecting groove; 22. a rear housing; 221. a rear housing main body; 222. a connecting rod; 223. a connecting ball; 224. a rear cover; 23. a pulley; 24. a wing plate; 25. a sawtooth groove; 26. a rubber sleeve; 27. a balancing weight; 3. a winding mechanism; 31. reeling a platform; 311. a platform floor; 312. a platform side plate; 313. fixing the screw rod; 314. an adjustment groove; 32. a retractor; 321. rolling up the shell; 322. winding an outlet; 323. reeling a shaft; 324. a hauling rope; 4. a power source; 41. a contact switch; 42. a bump; 43. a spring plate; 44. operating the bolt; 51. an LED lamp; 52. an image pickup unit; 53. a recording unit; 54. a temperature sensor; 55. a pressure sensor; 56. a PLC controller; 57. a tracer; 58. a memory; 6. a tensioning mechanism; 61. a rocker arm; 62. tensioning the screw; 63. adjusting a knob; 64. a belt; 65. a driving wheel; 66. a driven wheel; 67. a motor; 7. a synchronization mechanism; 71. a synchronous support; 72. a driven shaft; 73. a drive bevel gear; 74. a driven bevel gear; 75. an upper side plate; 76. a slide bar; 77. a driving lever; 78. a driven lever; 79. an avoidance groove; 8. a stabilizer; 81. a slider; 82. an extension rod; 83. a lifting ring.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

Referring to fig. 1-17, a pipeline leakage detection system includes a detection mechanism 2 and a furling mechanism 3; the detection mechanism 2 is positioned in the pipeline 1; the furling mechanism 3 is arranged on a branch pipe 11 of the pipeline 1; the detection mechanism 2 is provided with an LED lamp 51, a camera unit 52, a recording unit 53, a PLC (programmable logic controller) 56, a tracer 57, a memory 58 and a power supply 4; the PLC controller 56 is electrically connected to the LED lamp 51, the camera unit 52, the recording unit 53, the tracer 57, the memory 58, and the power supply 4; the furling mechanism 3 comprises a furling platform 31 arranged on the branch pipe 11 and a furling device 32 fixed on the furling platform 31; the retractor 32 includes a retractor housing 321 whose axis is horizontal and whose inside is hollow; the upper end of the furling shell 321 is communicated with a horizontal hollow furling outlet 322 along the tangential direction; a furling shaft 323 is rotatably arranged at the axis of the furling shell 321, and two ends of the furling shaft 323 penetrate through two side walls of the furling shell 321; a pulling rope 324 is wound on the furling shaft 323, and the tail end of the pulling rope 324 is fixed with the detection mechanism 2 after the pulling rope 324 slides out of the furling outlet 322.

According to the above description, the pipe leakage detecting system mainly comprises a detecting mechanism 2 for observing the internal condition of the pipe 1 in the pipe 1, and a winding mechanism 3 arranged on the branch pipe 11 for winding and unwinding the detecting mechanism 2. The detection mechanism 2 is integrated with main components required for detection work, such as an LED lamp 51, a camera unit 52, a recording unit 53, a PLC (programmable logic controller) 56, a tracer 57, a memory 58, a power supply 4 and the like; the LED lamp 51 provides illumination, the camera unit 52 acquires image data inside the pipeline 1, the recording unit 53 collects audio data inside the pipeline 1, and the tracer 57 provides position information and sends a signal, so that a worker can conveniently position the detection mechanism 2 in the pipeline 1; the power supply 4 supplies power to other parts, and the PLC 56 controls the working states of other parts; the memory 58 is used for storing the collected data information. The retracting mechanism 3 includes a retracting platform 31 and a retractor 32. The winding platform 31 is arranged on the branch pipe 11 and is used for placing the retractor 32; the housing of the retractor 32 is similar to a whistle, and includes a retractor housing 321, a retractor outlet 322, and a retractor shaft 323; the pulling rope 324 is wound on the winding shaft 323, and one end of the pulling rope slides out of the winding outlet 322 and then is fixed with the detection mechanism 2. In the detection mechanism 2, the memory 58 is arranged, so that the detection mechanism 2 can directly store data in the memory 58, and the data in the memory 58 can be checked after the detection mechanism 2 is recovered, thereby avoiding the situation that the data wire is built in the traction rope 324 in the existing pipeline detector, greatly increasing the weight and specification of the traction rope 324 and reducing the portability. This pipeline leakage detecting system need not additionally to set up the data line again in haulage rope 324, greatly reduced wire rod's weight, reduce the volume of bobbin, improves this pipeline leakage detecting system's mobility and portability.

Specifically, the power source for rotating the take-up shaft 323 may be manual (i.e., rotated by the handle) or automatic (i.e., driven by the motor or the motor 67).

Further, the furling platform 31 comprises a horizontal platform bottom plate 311 and a platform side plate 312 vertically fixed at the upper end of one side of the platform bottom plate 311; the lower end of the retracting shell 321 is fixed with the platform bottom plate 311; the tail end of the furling shaft 323 is rotatably arranged on the platform side plate 312; a fixed screw 313 is vertically fixed at the lower end of the platform bottom plate 311; the fixed screw 313 is fixed on the upper flange 12 of the branch pipe 11 through threads; the pulling rope 324 is marked with scale marks, and the zero scale mark is located at the connection position of the pulling rope 324 and the detecting mechanism 2. The furling platform 31 is fixed on the upper flange 12 of the branch pipe 11 through the fixing screw 313, so that the furling platform is stable, firm and convenient to disassemble. The tail end of the furling shaft 323 is connected to the platform side plate 312, and a certain supporting effect can be achieved on the furling shaft 323. The pull rope 324 is marked with scale marks which can visually indicate the paying-off length of the pull rope 324 in units of centimeters, so that a worker can know the distance that the detection mechanism 2 has advanced conveniently, and the detection mechanism 2 can be positioned quickly by matching with the tracer 57.

Further, the detection mechanism 2 includes a front case 21 and a rear case 22 disposed behind the front case 21; the front shell 21 is of a streamline structure with a small front part and a big back part; the front case 21 includes a front case body 211, a lens 212, and a rear plate 213; the front shell main body 211 is hollow, and the front end of the front shell main body is open; the transparent lens 212 is fixed on the open end of the front shell main body 211; the rear plate 213 is fixed to the rear end of the front case body 211 in a closed manner; the rear case 22 includes a rear case main body 221 and a rear cover 224; the rear shell main body 221 is horizontally hollow, the front end of the rear shell main body is connected with the rear plate 213, and the rear end of the rear shell main body is arranged in an open manner; the rear cover 224 is fixed to the open end of the rear housing body 221; the LED lamps 51 are uniformly arranged at the front end of the front shell main body 211 at intervals and are circularly arrayed on the periphery of the lens 212; the camera unit 52 and the sound recording unit 53 are both accommodated in the front shell main body 211, and the camera unit 52 is positioned behind the lens 212; a temperature sensor 54 and a pressure sensor 55 are respectively arranged on the periphery of the front end of the front shell main body 211; the temperature sensor 54 and the pressure sensor 55 are respectively in electrical signal connection with the PLC controller 56; the power supply 4, the PLC controller 56, the tracer 57, and the memory 58 are all provided within the rear case main body 221; the lower part of the inner side of the rear shell main body 221 is also provided with a balancing weight 27; the pull cord 324 is secured to the rear cover 224; the periphery of the middle part of the front shell 21 is coated with a rubber sleeve 26.

According to the above description, the detection mechanism 2 includes the front case 21 and the rear case 22 disposed behind the front case 21. The front shell 21 is positioned in front and has a streamline structure with a small front part and a big back part, so that resistance can be reduced, and the detection mechanism 2 can advance in the pipeline 1; the front case 21 includes a front case main body 211, a lens 212, and a rear plate 213, the front case main body 211 being hollow inside and incorporating the image pickup unit 52 and the sound recording unit 53; a temperature sensor 54 and a pressure sensor 55 are further provided on the outer circumference of the front end of the front case main body 211, respectively, for detecting temperature data and water pressure. The rear case 22 includes a rear case main body 221 and a rear cover 224, and the rear case main body 221 and the rear cover 224 are detachably fixed. The rear case body 221 is horizontally hollow, and houses the power supply 4, the PLC controller 56, the tracer 57, and the memory 58. The rubber sleeve 26 is coated on the periphery of the middle part of the front shell 21, and can play a role in protection and shock absorption to a certain extent; the lower part of the inner side of the rear shell main body 221 is also provided with a balancing weight 27, so that the detection mechanism 2 can be submerged in the middle layer of the water flow instead of floating on the water surface.

Specifically, the outer diameter of the front housing 21 is larger than the outer diameter of the rear housing 22.

In particular, the components such as the camera unit 52, the recording unit 53, the temperature sensor 54, the pressure sensor 55, and the like, which mainly perform the functions of detection and data collection, are disposed in the front housing 21, so as to facilitate data collection and improve accuracy; the power source 4, the PLC controller 56, the tracer 57, and the memory 58 are provided in the rear case 22 to avoid interference with the components in the front case 21.

Further, a rear connecting groove 215 is formed in the middle of the rear end of the rear plate 213; a connecting rod 222 is fixed at the front end of the rear shell body 221; a connecting ball 223 is fixed at the front end of the connecting rod 222; the connecting ball 223 is received in the rear receiving groove 215, and the connecting ball 223 is movable in the rear receiving groove 215. The rear receiving groove 215 is spherical shell-shaped and can cover the connecting ball 223 to prevent the connecting ball 223 from falling off; meanwhile, the connecting ball 223 can also move in the rear groove 215, so that the front shell 21 and the rear shell 22 can be folded at a certain angle, and the rear shell 22 can swing, thereby facilitating the detection mechanism 2 to pass through some corners and not to be clamped.

Further, a wing plate 24 is arranged at the rear end of the rear plate 213; the wing plates 24 are arranged in a circular array at uniform intervals; the tail ends of the wing plates 24 are arranged in a diffused mode; the tail end of the wing plate 24 is also provided with a plurality of sawtooth grooves 25. The wing plates 24 are arranged, and mainly because the detection mechanism 2 is not provided with a power system, the detection mechanism is mainly pushed to move forwards by water flow, and therefore the wing plates 24 are arranged to increase the pushed area and increase the thrust. Meanwhile, in order to prevent the resistance force applied to the detection mechanism 2 from being too large due to the wing plate 24, the serration groove 25 is formed at the end of the wing plate 24 to reduce the resistance force.

Specifically, the front end of the wing plate 24 may be directly fixed to the rear plate 213, or may be hinged to the rear plate 213. Meanwhile, the maximum outer diameter of the distal end of the wing 24 should be smaller than the outer diameter of the front case body 211.

Further, a plurality of wheel grooves 214 are uniformly spaced on the periphery of the end of the front shell main body 211; a pulley 23 is rotatably arranged in each pulley groove 214; the outside of the pulley 23 protrudes from the outer surface of the front case main body 211. Preceding shell main part 211 end sets up pulley 23, and it is mainly when detection mechanism 2 runs in pipeline 1, detection mechanism 2 runs the inner wall of pipeline 1, scrapes the sliding friction of pipeline 1 inner wall with detection mechanism 2, becomes the rolling friction between pulley 23 and the pipeline 1 inner wall, reduces the loss, improves life.

Further, the power source 4 is disposed near the rear cover 224; the power supply 4 comprises a contact switch 41, an elastic sheet 43 and an operating bolt 44; the contact switch 41 is in electrical signal connection with the PLC controller 56; the contact switch 41 is fixed in the rear case 22; after the operating bolt 44 passes through the rear cover 224 from outside to inside, the end is positioned below the rear side of the contact switch 41; a bump 42 is fixed at the middle part of one side of the contact switch 41 close to the rear cover 224; the middle part of the elastic sheet 43 is hinged with the lug 42; one end of the elastic sheet 43 is fixed to the operating bolt 44, and the other end of the elastic sheet can be in contact with the contact switch 41.

According to the above description, the power source 4 mainly includes the contact switch 41, the spring piece 43, and the operation bolt 44. In the pipe leakage detection system, the power supply 4 is supplied with power by using the contact switch 41. The middle part of the elastic sheet 43 is hinged with the convex block 42 arranged at the middle part of one side of the contact switch 41 close to the rear cover 224, the elastic sheet 43 forms a lever, after the operation bolt 44 is screwed, the tail end of the operation bolt 44 pushes the lower end of the elastic sheet 43, the upper end of the elastic sheet 43 is separated, the contact switch 41 is disconnected, the power supply 4 is in an opening and closing state, and power is not supplied to each unit in the detection mechanism 2. After the operating bolt 44 is unscrewed and the lower end of the elastic sheet 43 is pulled by the tail end of the operating bolt 44, the upper end of the elastic sheet 43 presses the contact switch 41, the contact switch 41 is switched on, the power supply 4 is switched on to supply power for each unit in the detection mechanism 2, and the pipeline leakage detection system is started to start working.

Further, the platform comprises a tensioning mechanism 6 arranged on the platform side plate 312; the tensioning mechanism 6 comprises a rocker arm 61, a tensioning screw 62, an adjusting knob 63, a belt 64, a driving wheel 65, a driven wheel 66 and a motor 67; the platform side plate 312 is provided with a transversely through arc-shaped adjusting groove 314; one end of the rocker arm 61 is hinged on the platform side plate 312, and the other end is fixed with the tensioning screw 62; the tensioning screw 62 passes transversely through the adjustment slot 314; the tensioning screw rod 62 can slide in the adjusting groove 314 around the hinge joint of the rocker arm 61 and the platform side plate 312; the adjusting knob 63 is fixed on the tensioning screw 62 in a threaded manner, and the adjusting knob 63 and the rocker arm 61 are respectively arranged on two sides of the platform side plate 312; the motor 67 is fixed at the tail end of the rocker arm 61; the driving wheel 65 is fixed on the output shaft of the motor 67; the driven wheel 66 is fixed on the winding shaft 323; the driving wheel 65 and the driven wheel 66 are in transmission connection through the belt 64.

According to the above description, the winding mechanism 3 of the pipe leakage detecting system is further provided with a tensioning mechanism 6. The tensioning mechanism 6 mainly includes a rocker arm 61, a tensioning screw 62, an adjusting knob 63, a belt 64, a driving wheel 65, a driven wheel 66, and a motor 67. One end of the rocker arm 61 is hinged on the platform side plate 312, and the other end is fixed with a tensioning screw 62; an adjusting groove 314 for the tensioning screw 62 to pass through is formed in the platform side plate 312, and the tensioning screw 62 can slide along the adjusting groove 314 and is finally fixed through an adjusting knob 63; the motor 67 is fixed at the end of the swing arm 61, and can drive the winding shaft 323 to rotate through the belt 64, the driving wheel 65 and the driven wheel 66. The tensioning screw 62 can slide in the adjusting groove 314 around the hinged position of the rocker arm 61 and the platform side plate 312, so that the tensioning degree of the belt 64 is adjusted to adapt to different water flow environments or the motor 67 under different rotating speed conditions, the rotating speed of the winding shaft 323 is ensured to be stable, and the stability and the good performance of the detection mechanism 2 under the winding and unwinding conditions are ensured.

Further, the device also comprises a synchronizing mechanism 7 arranged on the retracting shell 321; the synchronous mechanism 7 comprises a synchronous bracket 71, a driven shaft 72, a driving bevel gear 73, a driven bevel gear 74, an upper side plate 75, a sliding rod 76, a driving rod 77, a driven rod 78 and a stabilizer 8; the synchronous bracket 71 is fixed on the upper part of the furling shell 321 close to one side of the platform side plate 312; the vertical driven shaft 72 is rotatably arranged on the synchronous bracket 71; the driving bevel gear 73 is fixed on the winding shaft 323; the driven bevel gear 74 is fixed to the driven shaft 72 and is engaged with the drive bevel gear 73; the upper end of the driven shaft 72 penetrates through the upper end of the synchronous bracket 71 and is fixed with one end of the driving rod 77; the two upper side plates 75 are respectively vertically fixed at the upper ends of the two sides of the furling shell 321; the two ends of the horizontal sliding rod 76 are respectively arranged at the upper ends of the inner sides of the two upper side plates 75; the stabilizer 8 is arranged on the sliding rod 76 in a sliding manner; an avoiding groove 79 is transversely arranged on the upper side plate 75 close to one side of the platform side plate 312 in a penetrating way; one end of the driven rod 78 is hinged with the driving rod 77, and the other end is hinged with the lower end of the stabilizer 8 after the middle part of the driven rod passes through the avoidance groove 79; the pull cord 324 slides through the stabilizer 8.

According to the above description, the winding mechanism 3 of the pipe leakage detecting system is further provided with a synchronizing mechanism 7. The synchronizing mechanism 7 mainly includes a synchronizing bracket 71, a driven shaft 72, a drive bevel gear 73, a driven bevel gear 74, an upper side plate 75, a slide bar 76, a drive lever 77, a driven lever 78, and a stabilizer 8. The synchronizing carrier 71 is mainly used for mounting the driven shaft 72; the driven bevel gear 74 is fixed to the driven shaft 72, and the drive bevel gear 73 engaged therewith is fixed to the take-up shaft 323; the two upper side plates 75 are vertically fixed at the upper ends of the two sides of the furling shell 321 respectively, and an avoidance groove 79 is transversely arranged on the upper side plate 75 close to one side of the platform side plate 312 in a through manner and is used for avoiding the driven rod 78 and the driving rod 77; a sliding rod 76 is further fixed between the two upper side plates 75, a stabilizer 8 is slidably sleeved on the sliding rod 76, and the traction rope 324 penetrates through the stabilizer 8; one end of a driving rod 77 is fixed at the upper end of the driven shaft 72, the other end of the driving rod 77 is hinged with one end of a driven rod 78, and the tail end of the driven rod 78 is hinged with the stabilizer 8 after the driven rod 78 passes through the avoidance groove 79. When the winding device is used, when the external power source drives the winding shaft 323 to rotate, the driven shaft 72 can be driven to rotate through the meshing action of the two bevel gears, then the driving rod 77 and the driven rod 78 are driven to operate, and finally the stabilizer 8 is driven to slide on the sliding rod 76, so that the uniform winding and unwinding of the traction rope 324 is realized, and the traction rope 324 is prevented from winding at the same position of the winding shaft 323 when being recycled and wound.

Further, the stabilizer 8 comprises a sliding block 81, an extension rod 82 and a hanging ring 83; the sliding block 81 is sleeved on the sliding rod 76 in a sliding manner; the lower end of the sliding block 81 is hinged with the tail end of the driven rod 78; one end of the extension rod 82 is fixed on the sliding block 81, and the other end of the extension rod is suspended in front of the furling outlet 322; the hanging ring 83 is fixed below the tail end of the extension rod 82; the lifting ring 83 faces the front of the winding outlet 322, and the traction rope 324 penetrates through the lifting ring 83 in a sliding mode.

According to the above description, the stabilizer 8 mainly includes the slider 81, the extension rod 82, and the suspension ring 83. The stabilizer 8 mainly plays a role in making it more reasonable to wind the traction rope 324. The sliding block 81 is arranged on the sliding rod 76 in a sliding manner and reciprocates on the sliding rod 76 under the driving action of the synchronous mechanism 7; meanwhile, the sliding block 81 suspends the suspension ring 83 in front of the winding outlet 322 through the extension rod 82, and the traction rope 324 passes through the suspension ring 83. When the pulling rope 324 is wound (or paid out) by the winding shaft 323, the driven rod 78 drives the sliding block 81 to move back and forth on the sliding rod 76 through the driving action of the synchronizing mechanism 7, and further drives the hanging ring 83 to move back and forth in front of the winding outlet 322, so that when the pulling rope 324 is wound or paid out by the winding shaft 323, the distribution on the winding shaft 323 is more uniform, and the pulling rope 324 is convenient to store.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A pipeline leakage detection system is characterized in that: comprises a detection mechanism (2) and a furling mechanism (3); the detection mechanism (2) is positioned in the pipeline (1); the furling mechanism (3) is arranged on a branch pipe (11) of the pipeline (1); the detection mechanism (2) is provided with an LED lamp (51), a camera unit (52), a recording unit (53), a PLC (programmable logic controller) controller (56), a tracer (57), a memory (58) and a power supply (4); the PLC controller (56) is respectively in electric signal connection with the LED lamp (51), the camera unit (52), the sound recording unit (53), the tracer (57), the memory (58) and the power supply (4); the winding mechanism (3) comprises a winding platform (31) arranged on the branch pipe (11) and a retractor (32) fixed on the winding platform (31); the retractor (32) comprises a retractor shell (321) which has a horizontal axis and is hollow inside; the upper end of the furling shell (321) is communicated with a horizontal hollow furling outlet (322) along the tangential direction; a furling shaft (323) is rotatably arranged at the axis of the furling shell (321), and two ends of the furling shaft (323) penetrate out of two side walls of the furling shell (321); a traction rope (324) is wound on the furling shaft (323), and after the traction rope (324) slides out of the furling outlet (322), the tail end of the traction rope is fixed with the detection mechanism (2).

2. The pipe leakage detection system of claim 1, wherein: the furling platform (31) comprises a horizontal platform bottom plate (311) and a platform side plate (312) vertically fixed at the upper end of one side of the platform bottom plate (311); the lower end of the furling shell (321) is fixed with the platform bottom plate (311); the tail end of the furling shaft (323) is rotatably arranged on the platform side plate (312); a fixed screw (313) is vertically fixed at the lower end of the platform bottom plate (311); the fixed screw (313) is fixed on an upper flange (12) of the branch pipe (11) in a threaded manner; the pull rope (324) is marked with scale marks, and the zero scale mark is positioned at the joint of the pull rope (324) and the detection mechanism (2).

3. The pipe leakage detection system of claim 1, wherein: the detection mechanism (2) comprises a front shell (21) and a rear shell (22) arranged behind the front shell (21); the front shell (21) is of a streamline structure with a small front part and a big back part; the front case (21) includes a front case main body (211), a lens (212), and a rear plate (213); the front shell main body (211) is hollow, and the front end of the front shell main body is arranged in an open mode; the transparent lens (212) is fixed on the open end of the front shell main body (211); the rear plate (213) is fixed at the rear end of the front shell main body (211) in a closed manner; the rear case (22) includes a rear case main body (221) and a rear cover (224); the rear shell main body (221) is horizontally hollow, the front end of the rear shell main body is connected with the rear plate (213), and the rear end of the rear shell main body is opened; the rear cover (224) is covered and fixed at the open end of the rear shell main body (221); the LED lamps (51) are uniformly arranged at the front end of the front shell main body (211) at intervals, and are circularly arrayed on the periphery of the lens (212); the camera shooting unit (52) and the sound recording unit (53) are both accommodated in the front shell main body (211), and the camera shooting unit (52) is positioned behind the lens (212); the periphery of the front end of the front shell main body (211) is also provided with a temperature sensor (54) and a pressure sensor (55) respectively; the temperature sensor (54) and the pressure sensor (55) are respectively connected with the PLC (56) through electric signals; the power supply (4), the PLC controller (56), the tracer (57), and the memory (58) are all disposed within the rear housing body (221); the lower part of the inner side of the rear shell main body (221) is also provided with a balancing weight (27); the hauling cable (324) is fixed with the rear cover (224); the periphery of the middle part of the front shell (21) is coated with a rubber sleeve (26).

4. The pipe leakage detection system of claim 3, wherein: the middle part of the rear end of the rear plate (213) is provided with a rear connecting groove (215); a connecting rod (222) is fixed at the front end of the rear shell main body (221); a connecting ball (223) is fixed at the front end of the connecting rod (222); the connecting ball (223) is accommodated in the rear receiving groove (215), and the connecting ball (223) is movable in the rear receiving groove (215).

5. The pipe leakage detection system of claim 3, wherein: the rear end of the rear plate (213) is also provided with a wing plate (24); the wing plates (24) are arranged in a circular array at uniform intervals; the tail ends of the wing plates (24) are arranged in a diffused mode; the tail end of the wing plate (24) is also provided with a plurality of sawtooth grooves (25).

6. The pipe leakage detection system of claim 3, wherein: a plurality of wheel grooves (214) are uniformly arranged on the periphery of the tail end of the front shell main body (211) at intervals; a pulley (23) is rotatably arranged in each pulley groove (214); the outer side of the pulley (23) protrudes out of the outer surface of the front case main body (211).

7. The pipe leakage detection system of claim 3, wherein: the power source (4) is disposed proximate to the rear cover (224); the power supply (4) comprises a contact switch (41), an elastic sheet (43) and an operation bolt (44); the contact switch (41) is in electrical signal connection with the PLC controller (56); the contact switch (41) is fixed in the rear housing (22); the operating bolt (44) passes through the rear cover (224) from outside to inside, and the tail end of the operating bolt is positioned below the rear side of the contact switch (41); a convex block (42) is fixed in the middle of one side of the contact switch (41) close to the rear cover (224); the middle part of the elastic sheet (43) is hinged with the convex block (42); one end of the elastic sheet (43) is fixed with the operating bolt (44), and the other end of the elastic sheet can be contacted with the contact switch (41).

8. The pipe leakage detection system of claim 2, wherein: the platform also comprises a tensioning mechanism (6) arranged on the platform side plate (312); the tensioning mechanism (6) comprises a rocker arm (61), a tensioning screw rod (62), an adjusting knob (63), a belt (64), a driving wheel (65), a driven wheel (66) and a motor (67); the platform side plate (312) is provided with a transversely through arc-shaped adjusting groove (314); one end of the rocker arm (61) is hinged to the platform side plate (312), and the other end of the rocker arm is fixed with the tensioning screw rod (62); the tensioning screw (62) transversely passes through the adjusting groove (314); the tensioning screw rod (62) can slide in the adjusting groove (314) around the hinge joint of the rocker arm (61) and the platform side plate (312); the adjusting knob (63) is fixed on the tensioning screw rod (62) in a threaded manner, and the adjusting knob (63) and the rocker arm (61) are respectively arranged on two sides of the platform side plate (312); the motor (67) is fixed at the tail end of the rocker arm (61); the driving wheel (65) is fixed on an output shaft of the motor (67); the driven wheel (66) is fixed on the winding shaft (323); the driving wheel (65) is in transmission connection with the driven wheel (66) through the belt (64).

9. The pipe leakage detection system of claim 2, wherein: the synchronous mechanism (7) is arranged on the furling shell (321); the synchronous mechanism (7) comprises a synchronous support (71), a driven shaft (72), a driving bevel gear (73), a driven bevel gear (74), an upper side plate (75), a sliding rod (76), a driving rod (77), a driven rod (78) and a stabilizer (8); the synchronous support (71) is fixed at the upper part of one side, close to the platform side plate (312), of the furling shell (321); the vertical driven shaft (72) is rotatably arranged on the synchronous bracket (71); the driving bevel gear (73) is fixed on the furling shaft (323); the driven bevel gear (74) is fixed on the driven shaft (72) and is meshed with the driving bevel gear (73); the upper end of the driven shaft (72) penetrates out of the upper end of the synchronous support (71) and then is fixed with one end of the driving rod (77); the two upper side plates (75) are respectively vertically fixed at the upper ends of the two sides of the furling shell (321); two ends of the horizontal sliding rod (76) are respectively arranged at the upper ends of the inner sides of the two upper side plates (75); the stabilizer (8) is arranged on the sliding rod (76) in a sliding manner; an avoiding groove (79) is transversely arranged on the upper side plate (75) close to one side of the platform side plate (312) in a penetrating way; one end of the driven rod (78) is hinged with the driving rod (77), the middle part of the driven rod passes through the avoidance groove (79), and the other end of the driven rod is hinged with the lower end of the stabilizer (8); the pull-cord (324) slides through the stabilizer (8).

10. The pipe leakage detection system of claim 9, wherein: the stabilizer (8) comprises a sliding block (81), an extension rod (82) and a lifting ring (83); the sliding block (81) is sleeved on the sliding rod (76) in a sliding manner; the lower end of the sliding block (81) is hinged with the tail end of the driven rod (78); one end of the extension rod (82) is fixed on the sliding block (81), and the other end of the extension rod is suspended in front of the furling outlet (322); the hanging ring (83) is fixed below the tail end of the extension rod (82); the lifting ring (83) is over against the front of the furling outlet (322), and the traction rope (324) penetrates through the lifting ring (83) in a sliding mode.

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