A pipeline detector water circulation test device and a detector water circulation test method

Abstract

The present invention discloses a pipeline detector water circulation test device and a detector water circulation test method. A pipeline detector water circulation test device includes a circulation passage module, a ball throwing module, a ball receiving module and an inlet and outlet water module connected to an external inlet and outlet water pipe; the circulation passage module includes a ball-feeding reversing valve, a circulation pipe 1, a circulation pipe 2, a ball receiving reversing valve, a one-way valve assembly, a ball valve 2 and a ball valve 4; the ball throwing module includes a ball-feeding pipe and a closed pipe sleeve 1; the ball receiving module includes a ball receiving pipe and a closed pipe sleeve 2; the inlet and outlet water module includes a four-position six-way reversing valve and four connecting pipes for connecting the four-position six-way valve and the circulation passage module; a detector water circulation test method is performed using the pipeline detector water circulation test device, and the detector enters the circulation passage module from the ball throwing module to circulate and finally exits from the ball receiving module. The test device in the present invention can simulate a water circulation scene and is used to perform a water circulation test in the detector pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline detector water circulation test, in particular to a pipeline detector water circulation test device and a detector water circulation test method. Background Art

[0002] There are a large number of oil and gas pipelines stored on the seabed. After long-term use, corrosion, cracks and holes will appear in the pipelines. If they are not discovered and treated in time, oil and gas leakage will seriously pollute the environment. Currently, a large number of companies are conducting research on pipeline detectors (detectors). Before the pipeline detectors are put into use, a test site needs to be established to conduct water circulation tests on the detector pipelines, and its performance can be tested through test data.

[0003] To this end, an effective test device is needed to establish a pipeline water circulation scenario, enable the detector to circulate forward in the annular pipeline, and use the device to conduct an effective detector pipeline water circulation test to obtain various data during the detector's circulation in the annular pipeline.

[0004] When designing a water circulation test device, several sections of pipes are usually spliced ​​together to form an annular pipe, and then fluid (water) is introduced into the established annular pipe, and a flowing water flow is formed in the annular pipe to simulate the water circulation scene in the pipe, so that the detector can circulate forward after being put into the water circulation scene. During the detector's forward circulation process and after the detector completes the circulation and exits the test device, the relevant data of the detector can be collected, and the collected data can be used to analyze the relevant performance of the detector (such as the detector's wear resistance, water resistance, data collection function in water circulation, etc.). In order to form a flowing water flow in the annular pipe, it is necessary to connect an inlet pipe and an outlet pipe to the annular pipe. The fluid enters the annular pipe from the inlet pipe, passes through the annular pipe, and then flows out from the outlet pipe.

[0005] The existing water circulation test device is relatively simple, such as Figure 1The figure shows a schematic diagram of the structure of an existing test device for water circulation test of a detector. In the test device, a plurality of pipe sections are spliced ​​to form an annular pipe, and then four ports are set on the annular pipe, namely the first port A2, the second port B2, the third port C2 and the fourth port D2, so as to divide the annular pipe into four sections, and four one-way valves (a, b, c, d) are added at the same time. The four one-way valves control the water flow in the same direction and allow the detector to pass through. One of the operating methods of the device is: when the detector is respectively located at the first position a1, the second position b1, the third position c1 and the fourth position d1, the detector can be pushed counterclockwise from the first position a1 in turn by selecting different ports for water inlet and outlet, and the detector circulates counterclockwise along the path of the first position a1, the second position b1, the third position c1, the fourth position d1 and the first position a1. An optional specific step is:

[0006] First, when the detector is located at the first position a1, the first port A2 and the second port B2 are connected to the water inlet pipe and the water outlet pipe respectively, and the third port C2 and the fourth port D2 are closed; at this time, water enters from the first port A2, flows counterclockwise, moves forward smoothly, and flows out from the second port B2;

[0007] Next, when the detector moves counterclockwise to the second position b1, the third port C2 and the fourth port D2 are connected to the water inlet pipe and the water outlet pipe respectively, and the first port A2 and the second port B2 are closed; at this time, water enters from the third port C2, flows counterclockwise, moves forward smoothly, and flows out from the fourth port D2;

[0008] Next, when the detector moves counterclockwise to the third position c1, the second port B2 and the first port A2 are connected to the water inlet pipe and the water outlet pipe respectively, and the third port C2 and the fourth port D2 are closed; at this time, water enters from the second port B2, flows counterclockwise, moves forward smoothly, and flows out from the first port A2;

[0009] Finally, when the detector moves counterclockwise to the fourth position d1, the fourth port D2 and the third port C2 are connected to the water inlet pipe and the water outlet pipe respectively, and the first port A2 and the second port B2 are closed; at this time, water enters from the fourth port D2, flows counterclockwise, moves forward smoothly, and flows out from the third port C2; the detector can return to the first position a1 under the push of the water flow.

[0010] Through the above structure and method, the detector can be pushed by the water flow to complete the circulation movement in the circulation pipeline in the counterclockwise direction.

[0011] However, in the existing test device, the first port A2, the third port C2, the second port B2 and the fourth port D2 are respectively connected to a single connecting pipe, and each connecting pipe is individually matched with a control valve and a set of water inlet and outlet equipment; the pipeline installation and the number arrangement of the water inlet and outlet equipment are very complicated, the structure is not simple enough, and the operation of controlling the water flow in and out of the annular pipe in a time-sharing and port-sharing manner will also become very complicated.

[0012] At the same time, since the test device lacks a dedicated insertion component for inserting the detector into the circulation pipeline and a detector recovery component for retrieving the detector from the circulation pipeline, at the beginning of the test, the detector needs to be placed in the pipeline before the annular pipeline is spliced, and then the annular pipeline is fully assembled and spliced; when the test needs to be stopped to take out the detector, the annular pipeline needs to be disassembled after the circulation movement is completed, and then the detector is taken out. This makes the insertion and removal operations of the detector too complicated, and each test needs to repeat the assembly and disassembly operations of the annular pipeline, which is time-consuming and easy to cause pipeline damage. Summary of the invention

[0013] 1. Technical issues to be resolved

[0014] The purpose of the present invention is to provide a pipeline detector water circulation test device and a detector water circulation test method in view of the problems and shortcomings in the prior art. The pipeline detector water circulation test device can establish a pipeline water circulation scene, and the structure of the test device is simpler. The detector can be quickly and conveniently put into and taken out of the pipeline water circulation scene without dismantling the annular pipeline, making the water circulation test operation of the entire pipeline detector more efficient and simple.

[0015] (II) Technical solution

[0016] In order to achieve the above object, the present invention adopts the following technical solutions:

[0017] A pipeline detector water circulation test device comprises a circulation passage module, a water inlet and outlet module, a ball throwing module and a ball receiving module;

[0018] The circulation passage module includes a ball-delivery reversing valve, a ball-receiving reversing valve, a circulation pipeline 1, a circulation pipeline 2, a one-way valve assembly, a ball valve 2 and a ball valve 4;

[0019] The ball-serving reversing valve comprises a valve body 2, a reversing valve core 1, a movable connecting bracket 1 for driving the reversing valve core 1 to move up and down along the inner wall of the valve body 2, an upper valve cover 1 and a lower valve cover 1; an intermediate channel 1, an intermediate channel 2 and an intermediate channel 3 are radially arranged on the outer wall of the valve body 2; the intermediate channel 1 and the intermediate channel 2 are located on the same straight line, and the intermediate channel 3 is located between the intermediate channel 1 and the intermediate channel 2; the reversing valve core 1 is located in the inner cavity of the valve body 2, and the reversing valve core 1 comprises a straight-shaped ball-serving valve core straight pipe for connecting the intermediate channel 1 and the intermediate channel 2 and an arc-shaped ball-serving valve core bent pipe for connecting the intermediate channel 2 and the intermediate channel 3, and the ball-serving valve core straight pipe and the ball-serving valve core bent pipe are stacked up and down; a valve stem 1 is also arranged on the movable connecting bracket 1 for driving the movable connecting bracket 1 to move up and down, and one end of the valve stem 1 passes through a through hole located in the middle of the upper valve cover 1 or the lower valve cover 1; a waterproof sealing layer 1 is arranged at the connection between the valve stem 1 and the upper valve cover 1 or the lower valve cover 1;

[0020] The ball receiving reversing valve comprises a valve body 4, a reversing valve core 2, a movable connecting bracket 2 for driving the reversing valve core 2 to move up and down along the inner wall of the valve body 4, an upper valve cover 2 and a lower valve cover 2; an intermediate channel 5, an intermediate channel 6 and an intermediate channel 7 are radially arranged on the outer wall of the valve body 4; the intermediate channel 5 and the intermediate channel 6 are located on the same straight line, and the intermediate channel 7 is located between the intermediate channel 5 and the intermediate channel 6; the reversing valve core 2 is located in the inner cavity of the valve body 4, and the reversing valve core 2 comprises a straight ball receiving valve core straight pipe for connecting the intermediate channel 5 and the intermediate channel 6 and an arc-shaped ball receiving valve core bent pipe for connecting the intermediate channel 6 and the intermediate channel 7, and the ball receiving valve core straight pipe and the ball receiving valve core bent pipe are stacked up and down; a valve stem 2 for driving the movable connecting bracket 2 to move up and down is also arranged on the movable connecting bracket 2, and one end of the valve stem 2 passes through a through hole located in the middle of the upper valve cover 2 or the lower valve cover 2; a waterproof sealing layer 2 is provided at the connection between the valve stem 2 and the upper valve cover 2 or the lower valve cover 2;

[0021] The middle channel 2 is connected to one end of the circulation pipeline 1, the other end of the circulation pipeline 1 is connected to the middle channel 6, the middle channel 5 is connected to one end of the circulation pipeline 2, the other end of the circulation pipeline 2 is connected to the middle channel 1;

[0022] The ball pitching module includes a ball serving pipeline and a closed pipe sleeve 1 connected to the entrance of the ball serving pipeline; one end of the ball serving pipeline is connected to the middle channel 3; the ball serving pipeline is connected to the circulation pipeline 2 through a branch pipeline 1; a ball valve 1 is connected to the side of the branch pipeline 1 close to the circulation pipeline 2;

[0023] The ball receiving module comprises a ball receiving pipeline and a closed pipe sleeve 2 connected to the outlet of the ball receiving pipeline; one end of the ball receiving pipeline is connected to the middle channel 7; the ball receiving pipeline is connected to the circulation pipeline 2 through a branch pipeline 2; a ball valve 3 is connected in the branch pipeline 2 and close to the circulation pipeline 2;

[0024] The circulation pipeline 1 is also provided with a port 1 for communicating with the water inlet and outlet modules; the circulation pipeline 2 is also provided with ports 2, 3 and 4 for communicating with the water inlet and outlet modules;

[0025] The one-way valve assembly is connected to the circulation pipeline 1 and the circulation pipeline 2, and includes a one-way valve 1 located between the port 4 and the port 1, a one-way valve 2 located between the port 1 and the port 2, a one-way valve 3 located between the port 2 and the port 3, and a one-way valve 4 located between the port 3 and the port 4;

[0026] The ball valve 2 is connected to the circulation pipeline 2 and is located between the middle channel 1 and the port 4; the ball valve 4 is connected to the circulation pipeline 2 and is located between the middle channel 5 and the port 2;

[0027] The connection between the branch pipe 1 and the circulation pipe 2 is located between the ball valve 2 and the check valve 4; the connection between the branch pipe 2 and the circulation pipe 2 is located between the ball valve 4 and the check valve 3;

[0028] The water inlet and outlet module comprises a four-position six-way reversing valve and four connecting pipes; the four-position six-way reversing valve comprises a valve body 1 and a rotating valve core located in the inner cavity of the valve body 1 and rotatably connected to the valve body 1; an upper channel, a middle channel and four bottom channels are sequentially distributed from top to bottom on the side wall of the valve body 1; the four bottom channels are respectively bottom channel 1, bottom channel 2, bottom channel 3 and bottom channel 4 which are uniformly distributed in radial direction; an upper valve cavity communicating with the upper channel and a valve cavity communicating with the middle channel are arranged between the rotating valve core and the inner wall of the valve body 1. The middle valve cavity is connected to the rotating valve core, the upper valve cavity and the middle valve cavity are both annular and extend radially along the outer wall of the rotating valve core; the rotating valve core is provided with a valve core channel 1 whose upper end opening is connected to the upper valve cavity and a valve core channel 2 whose upper end opening is connected to the middle valve cavity; the lower end opening of the valve core channel 1 and the lower end opening of the valve core channel 2 are symmetrically distributed on the side wall of the rotating valve core, and the lower end opening of the valve core channel 1 and the lower end opening of the valve core channel 2 are both at the same height as the four bottom channels; a waterproof sealing layer 3 is also provided at the connection between the rotating valve core and the valve body 1;

[0029] The first through-port is connected to the first bottom channel, the second through-port is connected to the second bottom channel, the third through-port is connected to the third bottom channel, and the fourth through-port is connected to the fourth bottom channel respectively through a connecting pipe;

[0030] The ball-delivering reversing valve, the one-way valve assembly, the second ball valve, the fourth ball valve, the first circulation pipeline, the second circulation pipeline and the receiving ball reversing valve can jointly form a circulation passage for the detector to pass through.

[0031] Furthermore, valve stem one, valve stem two, ball valve one, ball valve two, ball valve three, ball valve four and the rotary valve core are respectively connected to a driving actuator, and the driving actuator is connected to the PLC.

[0032] Furthermore, a position sensor capable of sensing the position of the detector is respectively arranged inside the middle channel two, on the side of the intersection of the port one and the circulation pipe one close to the direction of the one-way valve two, on the side of the intersection of the port two and the circulation pipe two close to the direction of the one-way valve three, on the side of the intersection of the port three and the circulation pipe two close to the direction of the one-way valve four, on the side of the intersection of the port four and the circulation pipe two close to the ball-serving reversing valve, and inside the ball-receiving pipe or the middle channel seven, and the position sensor is connected to the PLC.

[0033] Furthermore, a barrier net is provided at one end of port 1 close to circulation pipe 1, and at one end of port 2, port 3, and port 4 close to circulation pipe 2, respectively. The barrier net allows water to pass through but does not allow the detector to pass through.

[0034] Furthermore, the circulation passage is a square, and the four corners of the square are transitioned into arc segments; the first opening, the second opening, the third opening and the fourth opening are respectively located in the middle of the four sides of the square.

[0035] Furthermore, the first port, the second port, the third port, the fourth port, the circulation pipe 1, the circulation pipe 2, the four connecting pipes, the ball-serving pipe, the ball-receiving pipe, the branch pipe 1 and the branch pipe 2 are all circular tubes with the same diameter.

[0036] Furthermore, the upper valve cavity and the middle valve cavity have the same shape and size; the valve core channel one and the valve core channel two are in the shape of circular tubes, and the diameters of the valve core channel one and the valve core channel two are the same; the upper channel, the middle channel and the bottom channel are in the shape of circular tubes, and the diameters of the upper channel, the middle channel, the bottom channel and the valve core channel one are the same.

[0037] A detector water circulation test method is performed using the pipeline detector water circulation test device, comprising the following steps:

[0038] Step 1: connect the upper channel with the external water inlet pipe, and connect the middle channel with the external drainage pipe; use the second closed pipe sleeve to close the outlet of the ball receiving pipe;

[0039] Step 2: Open the closed pipe sleeve 1, insert the detector from the entrance of the ball-serving pipe into the ball-serving pipe and place it between the branch pipe 1 and the ball-serving reversing valve; after the detector enters the ball-serving pipe, use the closed pipe sleeve 1 to seal the entrance of the ball-serving pipe; control the ball valve 1 to open, the ball valve 2 to close, and the ball valve 4 to open; at the same time, control the two ends of the bent pipe of the ball-serving valve core in the ball-serving reversing valve to be connected to the middle channel 2 and the middle channel 3 respectively; control the two ends of the straight pipe of the ball-receiving valve core in the ball-receiving reversing valve to be connected to the middle channel 5 and the middle channel 6 respectively;

[0040] Then, the upper channel and the middle channel are connected to a bottom channel respectively, and water is introduced from the upper channel into the four-position six-way reversing valve to form a water flow that pushes the detector forward. The detector moves toward the second direction of the middle channel under the push of the water flow.

[0041] Step 3: When the detector moves to the middle channel 2 under the push of the water flow, the direction of the water flow in and out of the circulation passage is controlled by the four-position six-way reversing valve, and a water flow is formed in the circulation passage to push the detector forward along the path of port 1, port 2, port 3, port 4, and middle channel 2 for at least one circulation movement; when the detector moves along the above path with middle channel 2 as the starting point under the push of the water flow and returns to middle channel 2 again, one circulation movement is completed;

[0042] During the cyclic movement, the control ball valve 1 and the ball valve 3 are in the closed state, and the control ball valve 2 and the ball valve 4 are in the open state;

[0043] During the cyclic movement, the two ends of the straight pipe of the ball-serving valve core in the ball-serving reversing valve are controlled to be connected with the intermediate channel 1 and the intermediate channel 2 respectively; the two ends of the straight pipe of the ball-receiving valve core in the ball-receiving reversing valve are controlled to be connected with the intermediate channel 5 and the intermediate channel 6 respectively;

[0044] Step 4: After the circulation movement is completed, when the detector moves to the middle channel 2 again or moves to the junction of the port 1 and the circulation pipeline 1 near the side of the check valve 2 again, the two ends of the ball receiving valve core elbow in the ball receiving reversing valve are controlled to be connected with the middle channel 6 and the middle channel 7 respectively; at the same time, the ball valve 4 is closed and the ball valve 3 is opened; the direction of the water flow in and out of the circulation passage is controlled by the four-position six-way reversing valve, and the water flow pushes the detector to flow in the direction of the ball receiving pipeline;

[0045] Step 5: When the detector moves into the ball receiving pipe under the push of water flow, open the second sealing sleeve and take out the detector.

[0046] Further, in step 3, during a single cycle movement, the control method of the four-position six-way reversing valve is as follows:

[0047] Step 3.1: When the detector moves to the middle channel 2, the upper channel of the 4-position 6-way reversing valve is controlled to be connected with the bottom channel 4, and the middle channel is connected with the bottom channel 2; the water flow pushes the detector to continue to move toward the direction of the port 1;

[0048] Step 3.2: When the detector moves to the junction of port 1 and circulation pipe 1 close to the side of one-way valve 2 under the drive of water flow, the upper channel of the four-position six-way reversing valve is controlled to be connected with the bottom channel 1, and the middle channel is connected with the bottom channel 3; the water flow pushes the detector to continue moving toward port 2.

[0049] Step 3.3: When the detector moves to the junction of port 2 and circulation pipe 2, close to the side of the third direction of the one-way valve, driven by the water flow, the upper channel of the four-position six-way reversing valve is controlled to be connected with the bottom channel 2, and the middle channel is connected with the bottom channel 4; the water flow pushes the detector to continue to move toward the third direction of the port;

[0050] Step 3.4: When the detector moves to the junction of port 3 and circulation pipe 2, close to the side of the one-way valve 4, driven by the water flow, the upper channel of the 4-position 6-way reversing valve is controlled to be connected with the bottom channel 3, and the middle channel is connected with the bottom channel 1; the water flow pushes the detector to continue to move toward port 4;

[0051] Step 3.5: When the detector moves to the junction of port 4 and circulation pipe 2 close to the side of the ball-serving reversing valve driven by the water flow, the upper channel of the four-position six-way reversing valve is controlled to be connected with the bottom channel 4, and the middle channel is connected with the bottom channel 2; the water flow pushes the detector to continue moving toward the middle channel 2.

[0052] Further, in step 2, the upper channel of the four-position six-way reversing valve is controlled to be connected to the bottom channel four, and the middle channel is controlled to be connected to the bottom channel two.

[0053] Further, in step 4, the upper channel of the four-position six-way reversing valve is kept in communication with the bottom channel four, and the middle channel is kept in communication with the bottom channel two.

[0054] (III) Beneficial effects

[0055] Compared with the prior art, the present invention provides a pipeline detector water circulation test device and a detector water circulation test method, which have the following beneficial effects: the pipeline detector water circulation test device in the present invention can simulate the establishment of a pipeline water circulation scene, realize the detector circulating forward in the annular pipeline, and obtain various data during the detector circulating forward in the annular pipeline. The obtained data can be used to evaluate and judge the relevant performance of the detector.

[0056] In the present invention, four openings for water flow in and out are provided on the circulation pipe 1 and the circulation pipe 2, and the four openings are respectively connected to the four-position six-way reversing valve through four connecting pipes; by rotating the rotating valve core of the four-position six-way valve, the water flow can be adjusted to enter and exit the circulation pipe 1 and the circulation pipe 2 from different connecting pipes as needed; compared with the connection structure of individually matching a set of control valves, water inlet equipment and drainage equipment for each connecting pipe, the test device in the present invention has a simpler structure and is more convenient to operate.

[0057] In the present invention, the ball-serving reversing valve is connected to the ball-serving pipeline and the circulation pipeline assembly (circulation pipeline 1 and circulation pipeline 2) at the same time, and the ball-receiving reversing valve is connected to the ball-receiving pipeline and the circulation pipeline assembly at the same time; when the detector needs to be put into the circulation pipeline assembly, the valve core of the ball-serving reversing valve is connected to the ball-serving pipeline, and the detector can be smoothly put into the circulation pipeline assembly; when the detector needs to be taken out of the circulation pipeline assembly, the valve core of the ball-receiving reversing valve is connected to the ball-receiving pipeline, and the detector can be smoothly taken out of the circulation pipeline assembly. At the same time, during the circulation movement of the detector, the ball-serving reversing valve and the ball-receiving reversing valve are connected to the circulation pipeline assembly, so that the circulation movement of the detector in the circulation pipeline assembly will not be affected. By adding the ball-serving reversing valve and the ball-receiving reversing valve, not only the delivery and recovery operations of the detector are realized, but also it can be realized without disassembling the test device, and the test operation is simpler and more controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 The utility model is a partial simplified structural diagram of an existing pipeline detector water circulation test device.

[0059] Figure 2 A schematic structural diagram of the pipeline detector water circulation test device of the present invention.

[0060] Figure 3 is Figure 1 The schematic diagram of the structure after removing the four connecting pipes and the PLC control box.

[0061] Figure 4 is Figure 2 The structural diagram after removing the four-position six-way reversing valve.

[0062] Figure 5 It is a stereoscopic diagram of the four-position six-way reversing valve in the present invention.

[0063] Figure 6 It is a cross-sectional view of the four-position six-way reversing valve after the rotary valve core is removed in the present invention.

[0064] Figure 7 It is a structural schematic diagram of the rotary valve core in the present invention.

[0065] Figure 8 It is a structural schematic diagram of the one-way valve in the present invention.

[0066] Fig. 9 It is a structural schematic diagram of the one-way valve core in the present invention.

[0067] Fig.10 It is a structural schematic diagram of the ball-serving reversing valve in the present invention.

[0068] Fig.11 It is a schematic diagram of the structure of the ball-serving reversing valve from a top view.

[0069] Fig.12 The cross section of the ball-serving reversing valve of the present invention is Figure 1 .

[0070] Fig.13 The cross section of the ball-serving reversing valve (including valve stem 1) in the present invention is Figure 2 .

[0071] Fig.14 It is a structural schematic diagram of a reversing valve core 1 of a ball reversing valve in the present invention.

[0072] In the picture:

[0073] 11-circulation pipeline 1, 12-circulation pipeline 2, 15-connection pipe 1, 16-connection pipe 2, 17-connection pipe 3, 18-connection pipe 4;

[0074] 21-four-position six-way valve, 200-valve body 1, 201-upper channel, 202-middle channel, 203-bottom channel 1, 204-bottom channel 2, 205-bottom channel 3, 206-bottom channel 4, 210-upper valve cavity, 211-middle valve cavity, 220-rotating valve core, 221-valve core channel 1, 222-valve core channel 2, 231-upper part of valve body, 232-middle part of valve body, 233-lower part of valve body, 240-seal;

[0075] 31-ball-serving reversing valve, 32-ball-receiving reversing valve, 300-valve body II, 301-upper valve cover I, 302-lower valve cover I, 304-connecting flange, 310-valve chamber, 311-middle channel I, 312-middle channel II, 313-middle channel III, 320-movable connecting bracket I, 321-valve stem I, 330-ball-serving valve core elbow, 331-ball-serving valve core straight pipe; 341-middle channel V, 342-middle channel VI, 343-middle channel VII;

[0076] 41- one-way valve 1, 42- one-way valve 2, 43- one-way valve 3, 44- one-way valve 4, 400- valve body 3, 401- front valve compartment, 402- rear valve compartment, 403- front flange, 404- rear flange, 405- middle flange, 410- one-way valve core, 411- valve, 412- short shaft, 413- valve seat;

[0077] 51-ball-delivering pipe, 52-ball-receiving pipe, 53-enclosed pipe sleeve 1, 54-enclosed pipe sleeve 2, 55-branch pipe 1, 56-branch pipe 2; 61-port 1, 62-port 2, 63-port 3, 64-port 4; 71-ball valve 1, 72-ball valve 2, 73-ball valve 3, 74-ball valve 4; 81-PLC control box. DETAILED DESCRIPTION

[0078] 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.

[0079] like Figure 2-14 As shown, the present invention provides a pipeline detector water circulation test device. The pipeline detector water circulation test device can establish a pipeline water circulation scene, and the device can be used to implement the pipeline water circulation operation of the pipeline detector.

[0080] In this embodiment, the pipeline detector water circulation test device (or simply "test device") includes multiple modules such as a circulation passage module, a water inlet and outlet module, a ball throwing module, a ball receiving module and a PLC control module. Among them, the ball throwing module and the ball receiving module are both connected to the circulation passage module, and the water inlet and outlet module is connected to the circulation passage module. The pipeline detector (referred to as "ball" or "detector") is thrown into the test device from the ball throwing module, and the detector enters the circulation passage module through the ball throwing module and circulates forward in the circulation passage module. After completing the specified circulation movement, the detector exits the circulation passage module and enters the ball receiving module, and finally exits the test device from the ball receiving module. The water inlet and outlet module is provided with a water inlet and a water outlet, and water flows in and out of the test device through the water inlet and outlet modules.

[0081] like Figure 2 As shown, in the test device, the circulation passage module includes a ball-serving reversing valve 31, a circulation pipeline assembly, a ball-receiving reversing valve 32, a one-way valve assembly, a ball valve 2 72 and a ball valve 4 74; the ball-casting module includes a ball-serving pipeline 51 and a closed pipe sleeve 1 53 connected to the inlet of the ball-serving pipeline 51; the ball-receiving module includes a ball-receiving pipeline 52 and a closed pipe sleeve 2 54 connected to the outlet of the ball-receiving pipeline 52; the water inlet and outlet module includes a four-position six-way valve 21, a connecting pipe 1 15, a connecting pipe 2 16, a connecting pipe 3 17 and a connecting pipe 4 18.

[0082] like Figure 2 As shown, the four-position six-way reversing valve 21 is connected to the pipeline assembly in the circulation passage module through four connecting pipes (i.e., connecting pipe 1 15, connecting pipe 2 16, connecting pipe 3 17 and connecting pipe 4 18).

[0083] like Figure 4As shown, the ball-delivering reversing valve 31, the one-way valve assembly (one-way valve 41, one-way valve 42, one-way valve 3 43, one-way valve 4 44), the ball valve 2 72, the ball valve 4 74, the circulation pipeline assembly and the ball-receiving reversing valve 32 together form a quasi-square circulation passage, and the four corners of the circulation passage are transitioned with arc pipe sections. The circulation passage establishes a pipeline circulation scene, and the water flow can drive the detector to circulate in it after entering.

[0084] The circulation pipeline assembly is composed of multiple sections of pipelines connected in sequence, such as Figure 2 As shown, in the structure of the test device of this embodiment, the circulation pipeline assembly includes a circulation pipeline 1 11 and a circulation pipeline 2 12. In this embodiment, the circulation pipeline 1 11 and the circulation pipeline 2 12 are both connected between the ball-delivery reversing valve 31 and the ball-receiving reversing valve 32, and the circulation pipeline 1 11 and the circulation pipeline 2 12 are formed by splicing multiple sections of pipelines in sequence front and back.

[0085] Specifically, if Figure 3 As shown, the middle channel 1 311 on the ball-serving reversing valve 31 is connected to one end of the circulation pipeline 2 12, and the middle channel 2 312 on the ball-serving reversing valve 31 is connected to one end of the circulation pipeline 1 11; the other end of the circulation pipeline 1 11 is connected to the middle channel 6 342 on the ball-receiving reversing valve 32, and the other end of the circulation pipeline 2 12 is connected to the middle channel 5 341 on the ball-receiving reversing valve 32. The middle channel 3 313 on the ball-serving reversing valve 31 is connected to the ball-serving pipeline 51, and the middle channel 7 343 on the ball-receiving reversing valve 32 is connected to the ball-receiving pipeline 52.

[0086] like Figure 2 , 3 As shown, the circulation pipeline assembly is provided with a port 1 61, a port 2 62, a port 3 63 and a port 4 64 which are respectively connected to the connecting pipe 1 15, the connecting pipe 2 16, the connecting pipe 3 17 and the connecting pipe 4 18, and the ports 1 61, 2 62, 3 63 and 4 64 are respectively located in the middle of the four sides of the quasi-square circulation passage. The ball-delivering reversing valve 31 is connected to the circulation pipeline assembly between the port 1 61 and the port 4 64, and the ball-receiving reversing valve 32 is connected to the circulation pipeline assembly between the port 1 61 and the port 2 62.

[0087] The one-way valve assembly, the second ball valve 72, and the fourth ball valve 74 are all connected to the circulation pipeline assembly, and the one-way valve 41 is located between the fourth port 64 and the first port 61, the second one-way valve 42 is located between the first port 61 and the second port 62, the third one-way valve 43 is located between the second port 62 and the third port 63, and the fourth one-way valve 44 is located between the third port 63 and the fourth port 64. The second ball valve 72 is located between the ball-delivering reversing valve 31 and the fourth port 64, and the fourth ball valve 74 is located between the ball-receiving reversing valve 32 and the second port 62.

[0088] One-way valve 1 41, one-way valve 2 42, one-way valve 3 43 and one-way valve 4 44 form a one-way valve assembly in the test device, which is used to control the water flow in the circulation pipeline assembly to always flow in the same direction and not to flow back in the opposite direction. At the same time, the detector can pass through each one-way valve along the direction of the water flow. In this embodiment, one-way valve 1 41, one-way valve 2 42, one-way valve 3 43 and one-way valve 4 44 have the same structure, and control the water flow in the counterclockwise direction. The structure of the one-way valve is as follows: Figure 8-9 shown.

[0089] like Figure 3 As shown, the ball-serving pipeline 51 is also connected to a branch pipeline 1 55, one end of which is in communication with the ball-serving pipeline 51, and the other end of which is in communication with the circulation pipeline 2 12; the ball-receiving pipeline 52 is also connected to a branch pipeline 2 56, one end of which is in communication with the ball-receiving pipeline 52, and the other end of which is in communication with the circulation pipeline 2 12. Moreover, the connection between the branch pipeline 1 55 and the circulation pipeline 2 12 is located between the ball valve 2 72 and the check valve 4 44, and the connection between the branch pipeline 2 56 and the circulation pipeline 2 12 is located between the ball valve 4 74 and the check valve 3 43. At the same time, a ball valve 1 71 is connected to the branch pipeline 1 55 and close to the circulation pipeline 2 12; and a ball valve 3 73 is connected to the branch pipeline 2 56 and close to the circulation pipeline 2 12.

[0090] In this embodiment, ball valve 1 71, ball valve 2 72, ball valve 3 73 and ball valve 4 74 are additionally provided; when the ball valve is closed, the water flow or the detector cannot continue to pass forward; when the ball valve is opened, the detector or the water flow can continue to pass forward through the ball valve.

[0091] like Figure 10-14 As shown, the ball-serving reversing valve 31 in this embodiment includes a valve body 2 300, an upper valve cover 1 301 and a lower valve cover 1 302; the outer wall of the valve body 2 300 is provided with an intermediate channel 1 311, an intermediate channel 2 312 and an intermediate channel 313 in the radial direction; the intermediate channel 1 311 and the intermediate channel 2 312 are located on the same straight line, and the intermediate channel 313 is located between the intermediate channel 1 311 and the intermediate channel 2 312; the inner cavity of the valve body 2 300 is provided with a reversing valve core 1 (such as Fig.14As shown in the figure, the reversing valve core 1 includes a straight ball valve core straight pipe 331 for connecting the intermediate channel 1 311 and the intermediate channel 2 312, and an arc-shaped ball valve core bent pipe 330 for connecting the intermediate channel 2 312 and the intermediate channel 3 313. The ball valve core straight pipe 331 and the ball valve core bent pipe 330 are stacked up and down; the ball valve core bent pipe 330 and the ball valve core straight pipe 331 are fixedly connected by a movable connecting bracket 1 320; the movable connecting bracket 1 320 is also provided with a valve stem 1 321 for driving the movable connecting bracket 1 320 to move up and down, and one end of the valve stem 1 321 passes through a through hole located in the middle of the upper valve cover 1 301; a waterproof sealing layer 1 is provided at the connection between the valve stem 1 321 and the upper valve cover 1 301.

[0092] The straight tube 331 of the ball-serving valve core and the bent tube 330 of the ball-serving valve core are stacked up and down, that is, the straight tube 331 of the ball-serving valve core is located above the bent tube 330 of the ball-serving valve core or the straight tube 331 of the ball-serving valve core is located below the bent tube 330 of the ball-serving valve core.

[0093] The inner wall of the upper valve cover 301 is in an arc shape that bulges upward, and the inner wall of the lower valve cover 302 is in an arc shape that sinks downward. The arc-shaped structure makes the valve cover have better pressure resistance. The lower end of the upper valve cover 301 is connected to the upper end flange of the valve body 300; the upper end of the lower valve cover 302 is connected to the lower end flange of the valve body 300, which can be easily disassembled to remove the valve core of the reversing valve and maintain the valve core of the reversing valve.

[0094] Preferably, the upper valve cover 301 and the lower valve cover 302 have the same shape and size to ensure good interchangeability of parts. The diameters of the ball valve core straight pipe 331, the ball valve core curved pipe 330, the middle channel 1 311, the middle channel 2 312, and the middle channel 3 313 are the same, which is more compatible and reduces the risk of the detector being blocked when passing through the valve core.

[0095] Preferably, the distance between the upper end of the intermediate channel 1 311 and the upper end of the valve body 2 300 is equal to the distance between the lower end of the intermediate channel 1 311 and the lower end of the valve body 2 300, and is equal to the diameter of each intermediate channel, so that the overall structure of the ball-serving reversing valve 31 is compact; after the reversing valve core 1 moves up or down the same distance, it can achieve complete communication between the ball-serving valve core straight pipe 331 and the intermediate channel 1 311 and the intermediate channel 2 312, or achieve complete communication between the ball-serving valve core bent pipe 330 and the intermediate channel 2 312 and the intermediate channel 3 313.

[0096] Preferably, the mobile connecting bracket 320 is a non-closed frame structure, the outer ring of the mobile connecting bracket 320 is cylindrical, and one end of the valve stem 321 is connected to the middle position of the upper end of the mobile connecting bracket 320. The non-closed frame ensures smooth water flow and can reduce the weight of the mobile connecting bracket 320 and reduce its movement resistance.

[0097] like Fig.10 As shown, the middle channel 1 311, the middle channel 2 312 and the middle channel 3 313 are located at the same height and are distributed radially. During the up and down movement of the reversing valve core 1, when the ball valve core straight pipe 331 connects the middle channel 2 312 and the middle channel 3 313, the ball valve core bent pipe 330 is not connected with the middle channel 2 312 and the middle channel 3 313 due to the height misalignment between them; at this time, the detector will not be easily stuck after entering the straight valve core straight pipe 331, and can smoothly enter and exit the ball reversing valve 31 driven by the water flow.

[0098] During the up and down movement of the reversing valve core, when the serving valve core bent pipe 330 connects the intermediate channel 2 312 and the intermediate channel 3 313, the serving valve core straight pipe 331 is not connected with the intermediate channel 2 312 and the intermediate channel 3 313 due to the height misalignment between them; at this time, because the serving valve core bent pipe 330 is arc-shaped and there is no obvious right-angle turning point, the detector is not easily stuck after entering the arc-shaped serving valve core bent pipe 330.

[0099] The ball receiving reversing valve 32 comprises a valve body 4, a reversing valve core 2 which can move up and down along the inner wall of the valve body 4, an upper valve cover 2 and a lower valve cover 2; the outer wall of the valve body 4 is provided with an intermediate channel 5 341, an intermediate channel 6 342 and an intermediate channel 7 343 in the radial direction; the intermediate channel 5 341 and the intermediate channel 6 342 are located on the same straight line, and the intermediate channel 7 343 is located between the intermediate channel 5 341 and the intermediate channel 6 342; the reversing valve core 2 is located in the inner cavity of the valve body 4, and the reversing valve core 2 includes a valve body 4 for moving the intermediate channel 5 341 and the intermediate channel 6 A straight ball valve core straight tube connected to 342 and an arc-shaped ball valve core bent tube used to connect the intermediate channel six 342 and the intermediate channel seven 343, the ball valve core straight tube and the ball valve core bent tube are stacked up and down; the ball valve core bent tube and the ball valve core straight tube are fixedly connected to the movable connecting bracket two; the movable connecting bracket two is also provided with a valve stem two for driving the movable connecting bracket two to move up and down, and one end of the valve stem two passes through the through hole located in the middle of the upper valve cover two and / or the lower valve cover two; a waterproof sealing layer two is provided at the connection between the valve stem two and the upper valve cover two and / or the lower valve cover two.

[0100] In this embodiment, the structure of the ball-delivering reversing valve 31 and the ball-receiving reversing valve 32 is the same, that is, the structure and size of the valve body 4 and the valve body 2 300 are the same, the structure and size of the reversing valve core 2 and the reversing valve core 1 are the same, the structure and size of the upper valve cover 2 and the upper valve cover 1 301 are the same, the structure and size of the lower valve cover 2 and the lower valve cover 1 302 are the same, the structure and size of the movable connecting bracket 2 and the movable connecting bracket 1 320 are the same, and the structure and size of the valve stem 2 and the valve stem 1 321 are the same. In addition, one end of the valve stem 1 321 is connected to the movable connecting bracket 1 320, and the other end of the valve stem 1 321 passes through the through hole located in the middle of the upper valve cover 1 301; and one end of the valve stem 2 is connected to the movable connecting bracket 2, and the other end of the valve stem 2 passes through the through hole located in the middle of the upper valve cover 2. For this reason, the structure of the ball-receiving reversing valve 32 can refer to the structural schematic diagram related to the ball-delivering reversing valve 31 listed in the accompanying drawings.

[0101] like Figure 3 As shown, during the installation process, the middle channel three 313 and the middle channel six 343 face different directions respectively; when the upper valve cover one 301 is located at the top, the upper valve cover two is located at the bottom, that is, the ball receiving reversing valve 32 needs to be flipped 180 degrees during installation. After the installation is completed, the valve stem one 321 and the valve stem two will be connected to the actuator from the upper and lower directions. In order to simplify the installation space between the valve stem one 321 and the valve stem two and the actuator, as a preferred solution, the other end of the valve stem two can be changed to pass through the through hole located in the middle of the lower valve cover two. At this time, the ball receiving reversing valve 32 is flipped 180 degrees to complete the installation. Figure 2 After the installation shown, the lower valve cover 2 faces upward, and the valve stem 1 321 is connected to the actuator from above the ball-delivering reversing valve 31, and the valve stem 2 is connected to the actuator from above the ball-receiving reversing valve 32, thereby saving the installation space below the ball-receiving reversing valve 32.

[0102] When the valve stem 321 moves upward, the reversing valve core 1 can be driven to move upward as a whole by moving the connecting bracket 1 320. When the two ports of the serving valve core straight pipe 331 are aligned and connected with the middle channel 1 311 and the middle channel 2 312 respectively, a linear water flow path is formed between the serving valve core straight pipe 331, the middle channel 1 311 and the middle channel 2 312; when reversing is required, the valve stem 321 moves downward, and the reversing valve core 1 is driven to move downward as a whole by moving the connecting bracket 1 320. When the two ports of the serving valve core bent pipe 330 are aligned and connected with the middle channel 2 312 and the middle channel 3 313 respectively, the serving valve core straight pipe 331 is located below the serving valve core bent pipe 330, and an arc-shaped water flow path is formed between the serving valve core bent pipe 330, the middle channel 2 312 and the middle channel 3 313.

[0103] like Figure 5-7As shown, the four-position six-way reversing valve 21 in this embodiment includes a valve body 200 and a cylindrical rotating valve core 220 located in the inner cavity of the valve body 200 and rotatably connected to the valve body 200; an upper channel 201, a middle channel 202 and four bottom channels (bottom channel 1 203, bottom channel 204, bottom channel 3 205, bottom channel 4 206) are distributed in sequence from top to bottom on the side wall of the valve body 200. The four bottom channels are evenly distributed along the radial direction; an upper valve cavity 210 communicating with the upper channel 201 and a middle valve cavity 211 communicating with the middle channel 202 are provided between the rotary valve core 220 and the inner wall of the valve body 200; the upper valve cavity 210 and the middle valve cavity 211 are both annular and extend radially along the outer wall of the rotary valve core 220; a valve core channel 221 with an upper end opening communicating with the upper valve cavity 210 and a valve core channel 221 with an upper end opening communicating with the middle channel 202 are provided in the rotary valve core 220. The valve core channel 222 is connected to the bottom valve cavity 211; the lower end opening of the valve core channel 1 221 and the lower end opening of the valve core channel 2 222 are symmetrically distributed on the side wall of the rotating valve core 220, and the lower end opening of the valve core channel 1 221 and the lower end opening of the valve core channel 2 222 are at the same height as the four bottom channels; the connection between the rotating valve core 220 and the valve body 1 200 is also provided with a waterproof sealing layer 3 (not shown in the drawings) which plays a sealing and anti-water seepage role.

[0104] The valve body 200 is composed of three parts from top to bottom, namely, the upper part 231, the middle part 232 and the lower part 233. A sealing member 240 for sealing and waterproofing is provided between the upper part 231 and the middle part 232, and between the middle part 232 and the lower part 233. Figure 6 As shown, the upper valve cavity 210 is located on the inner wall of the upper part 231 of the valve body, the upper channel 201 is located on the outer wall of the upper part 231 of the valve body and communicates with the upper valve cavity 210; the middle valve cavity 211 is located on the inner wall of the middle part 232 of the valve body, the middle channel 202 is located on the outer wall of the middle part 232 of the valve body and communicates with the middle valve cavity 211; the four bottom channels are located on the outer wall of the lower part 233 of the valve body and communicate with the inner cavity of the lower part 233 of the valve body, and the bottom channel 1 203, the bottom channel 204, the bottom channel 3 205 and the bottom channel 4 206 are evenly distributed radially around the outer wall of the valve body 1 200. The valve body 1 200 uses the assembled structure of the valve body upper part 231, the valve body middle part 232 and the valve body lower part 233 instead of the integrally formed structure, which can reduce the difficulty of processing and manufacturing the valve body 1 200, and also simplify the difficulty of installing the rotating valve core 220 into the inner cavity of the valve body 1 200.

[0105] like Figure 7As shown, the valve core channel 1 221 and the valve core channel 2 222 are both longitudinally extended and in a circular tube shape, and the upper and lower ports of the valve core channel 1 221 and the valve core channel 2 222 are both arranged on the side wall of the rotating valve core 220. Since the upper valve cavity 210 and the middle valve cavity 211 are annular, and the heights of the upper openings of the upper channel 201, the middle channel 202, the valve core channel 1 221, and the valve core channel 2 222 are fixed, during the circumferential rotation of the rotating valve core 220, the upper channel 201, the upper valve cavity 210, and the upper openings of the valve core channel 1 221 are always in communication, and the middle channel 202, the middle valve cavity 211, and the upper openings of the valve core channel 2 222 are also always in communication.

[0106] The rotary valve core 220 is rotatably connected to the valve body 1 200. During the rotation of the rotary valve core 220, the lower end opening of the valve core channel 1 221 and the lower end opening of the valve core channel 2 222 can be respectively connected to the bottom channel 1 203 and the bottom channel 3 205 at the same time, or can be respectively connected to the bottom channel 2 204 and the bottom channel 4 206 at the same time.

[0107] During the rotation of the rotary valve core 220, when the valve core channel in the rotary valve core 220 is connected with the bottom channel, two fluid passages will always be formed simultaneously inside the four-position six-way reversing valve. For example, when the lower end opening of the valve core channel 1 221 and the lower end opening of the valve core channel 2 222 are respectively connected with the bottom channel 1 203 and the bottom channel 3 205 at the same time, two fluid passages will be formed inside the reversing valve, that is, a fluid passage is formed between the upper channel 201, the upper valve cavity 210, the valve core channel 1 221 and the bottom channel 1 203, and a second fluid passage is formed between the middle channel 202, the middle valve cavity 211, the valve core channel 2 222 and the bottom channel 3 205. Since the four bottom channels are evenly distributed along the radial direction, every time the rotary valve core 220 rotates 90 degrees, the bottom channels connected to the lower end openings of valve core channel 1 221 and the lower end openings of valve core channel 2 222 will be different, thereby achieving the purpose of fluid reversal during the rotation and repositioning process of the rotary valve core 220.

[0108] In this embodiment, in the 4-position 6-way reversing valve 21, the upper channel 201 is a water inlet channel, which is connected to an external water inlet pipe; the middle channel 202 is a water outlet channel, which is connected to an external water outlet pipe. That is, of the two water flow paths simultaneously formed inside the 4-position 6-way valve, one can be used for water inlet and the other can be used for water outlet.

[0109] In this embodiment, the upper valve cavity 210 and the middle valve cavity 211 have the same size and shape; the valve core channel 1 221, the valve core channel 2 222, the upper channel 201, the middle channel 202, the bottom channel 1 203, the bottom channel 2 204, the bottom channel 3 205 and the bottom channel 4 206 are all in the shape of a circular tube and have the same diameter; and the height of the upper valve cavity 210 and the middle valve cavity 211 is the same as the diameter of each layer of channels. Through the above structure, the valve cavities and channels of each layer are matched in size, reducing the vibration caused by the shrinkage of the valve body 1 200 during the flow of water; at the same time, after the upper channel 201 is connected to the water inlet equipment and the middle channel 202 is connected to the drainage equipment, it can better achieve the consistency of the water flow speed in the two fluid passages formed in the four-position six-way reversing valve 21. The tubular channel can reduce the vibration caused when the water flow changes direction.

[0110] In order to better control the opening and closing of the ball-delivering reversing valve 31, the ball-receiving reversing valve 32, and the four ball valves, in this embodiment, the ball-delivering reversing valve 31 and the ball-receiving reversing valve 32 are each individually connected to an electric actuator (such as a motor), and the electric actuator is connected to the PLC control box 81. The operation of each electric actuator is controlled by the PLC to realize the opening and closing operation of the ball-delivering reversing valve 31 and the ball-receiving reversing valve 32. Each ball valve is individually connected to a pneumatic actuator, and the pneumatic actuator is connected to the PLC control box 81. The operation of each pneumatic actuator is controlled by the PLC to realize the opening and closing of each ball valve.

[0111] In order to prevent the detector from entering the four connecting pipes during the process of moving forward in the circulation pipe 11 and the circulation pipe 2 12 along with the water flow, in this embodiment, a blocking net (not shown in the drawings) is provided at one end of the port 1 61 close to the circulation pipe 1 11, and at one end of the port 2 62, the port 3 63, and the port 4 64 close to the circulation pipe 2 12, respectively. There are a total of 4 blocking nets. The blocking nets can allow water to pass through, and at the same time, the blocking nets can prevent the detector from flowing into the port 1 61, the port 2 62, the port 3 63 or the port 4 64.

[0112] In order to grasp the position of the detector moving in the test device, a position sensor that can sense the position of the detector is respectively arranged inside the middle channel 2 312 in the ball serving reversing valve 31, at the intersection of the port 1 61 and the circulation pipe 1 1 on the side close to the direction of the check valve 2 42 (i.e., position 1 A), at the intersection of the port 2 62 and the circulation pipe 2 12 on the side close to the direction of the check valve 3 43 (i.e., position 2 B), at the intersection of the port 3 63 and the circulation pipe 2 12 on the side close to the direction of the check valve 4 44 (i.e., position 3 C), at the intersection of the port 4 64 and the circulation pipe 2 12 on the side close to the serving reversing valve 31 (i.e., position 4 D), and in the ball receiving pipe 52 or the middle channel 7 343, and the position sensor is connected to the PLC. When the detector reaches a preset position such as the inside of the middle channel 2 312, position 1 A, position 2 B, position 3 C, position 4 D, the ball receiving pipe 52 or the middle channel 7 343, it will be sensed by the position sensor, and the position sensor will send a sensing signal to the PLC. The PLC that receives the signal will control the operation of each module accordingly according to the preset program.

[0113] In this embodiment, the port 1 61, the port 2 62, the port 3 63, the port 4 64, the circulation pipe 1 11, the circulation pipe 2 12, the four connecting pipes, the ball-serving pipe 51, the ball-receiving pipe 52, the branch pipe 1 55 and the branch pipe 2 56 are all circular tubes with the same diameter.

[0114] In this embodiment, a position sensor is added at position 6F in the ball receiving pipe 52. When the detector reaches position 6F, the sealing sleeve 2 54 can be opened. At this time, since the detector is close to the outlet end of the ball receiving pipe 52, the detector can be taken out of the ball receiving pipe 52 more conveniently.

[0115] When the test device in this embodiment is used to perform a water circulation test of the detector, the detector will enter the test device from the ball throwing module, enter the circulation passage module through the ball throwing module, and then complete one or more circulation movements in the circulation passage module, and finally exit the test device from the ball receiving module. In the above process, water will enter and exit the test device through the water inlet and outlet module, and form a flowing water flow in the test device to push the detector forward.

[0116] exist Figure 4 In the figure, the detector enters the test device, completes a cycle and then exits the test device. We have used arrows to mark the path. The whole path is mainly divided into three stages, namely the pitching stage, the cycle stage and the collection stage. The forward paths of the pitching stage and the cycle stage are shown in Figure 4 The solid arrow in the middle indicates that the forward path in the receiving phase is Figure 4 Indicated by dotted arrows.

[0117] In this embodiment, the method of using the test device to perform detector water circulation, that is, completing the above three stages of the ball throwing stage, the circulation stage and the ball collecting stage is as follows:

[0118] Preparation stage: First, before entering the ball throwing stage, the upper channel 201 is connected to the external water inlet pipe, and the middle channel 202 is connected to the external drainage pipe; the outlet of the ball receiving pipe 52 is closed using the closed pipe sleeve 2 54 .

[0119] Ball throwing stage (i.e., throwing the detector into the circulation path module at the starting point of the circulation): open the closed pipe sleeve 1 53, insert the detector into the ball serving pipeline 51 from the entrance of the ball serving pipeline 51 and place it between the branch pipe 1 55 and the ball serving reversing valve 31, such as position 5E and after position 5E; The PLC control box 81 controls the four-position six-way reversing valve 21 to start, and the rotating valve core 220 rotates to make the upper channel 201 communicate with the bottom channel 4 206, and the middle channel 202 communicate with the bottom channel 2 204, and at the same time controls the ball valve 1 71 to open, the ball valve 2 72 to close, and the ball valve 4 74 to open; at the same time, the two ends of the ball valve core bend pipe 330 in the ball-serving reversing valve 31 are controlled to be connected with the middle channel 2 312 and the middle channel 3 313 respectively, so that the middle channel 2 312 and the middle channel 3 313 on the ball-serving reversing valve 31 are connected; the two ends of the ball valve core straight pipe in the ball-receiving reversing valve 32 are controlled to be connected with the middle channel 5 341 and the middle channel 6 342 respectively, so that the middle channel 5 341 and the middle channel 6 342 on the ball-receiving reversing valve 32 are connected. Then, water begins to be introduced into the four-position six-way reversing valve from the upper channel 201.

[0120] In the ball throwing stage, the water flows from the upper channel 201 into the four-position six-way reversing valve 21, and from the bottom channel 4 206 into the connecting pipe 4 18, and then flows forward from the connecting pipe 4 18 into the circulation passage module, and then enters the ball-serving pipe 51 along the branch pipe 1 55, and pushes the detector placed in the ball-serving pipe 51 toward the ball-serving reversing valve 31. At this time, the two ends of the ball-serving valve core elbow 330 in the ball-serving reversing valve 31 are respectively connected with the middle channel 2 312 and the middle channel 3 313, and the detector moves to the position of the middle channel 2 312 as the water flows from the middle channel 3 313.

[0121] When the detector is driven by the water flow to the middle channel 2 312, it is located at the starting point of the circular movement, and the pitching stage ends.

[0122] Meanwhile, in the pitching stage, after the water flows into the circulation passage module from the connecting pipe 4 18, the water will not flow leftward into the serving reversing valve 31 after entering the circulation pipe 2 12 due to the closure of the ball valve 2 72; and, due to the presence of the check valve 4 44, although the water can flow in the direction of the check valve 4 44, it cannot continue to flow clockwise toward the port 3 63 after passing through the check valve 4 44. The ball valve 3 73 can be in an open state or a closed state in the pitching stage.

[0123] During the pitching phase, if water continues to flow in, the water entering the circulation passage module can enter the bottom channel 204 through the connecting pipe 16 after reaching a certain amount, and finally flow out from the middle channel 202.

[0124] Circulation stage (detector circulates in the circulation channel module): we use the middle channel 2 312 in the ball-serving reversing valve 31 as the starting point of the circulation movement. The detector circulates counterclockwise along the circulation channel module from the starting point and returns to the starting point of the circulation movement. This is a circulation movement. In the circulation stage, water is introduced into the circulation channel through the rotation of the rotary valve core of the four-position six-way valve, forming a water flow in the circulation channel that promotes the circulation movement of the detector.

[0125] In this embodiment, the four-position six-way valve is used to control the water flow direction to realize a circular movement of the detector, which can be carried out in the following five specific steps:

[0126] Step 1: When the detector moves to the middle channel 2 312, the position sensor placed in the middle channel 2 312 senses it, and the PLC that receives the sensing signal from the sensor controls the two ends of the ball-serving valve core straight pipe 331 in the ball-serving reversing valve 31 to be connected to the middle channel 1 311 and the middle channel 2 312 respectively, so that the middle channel 1 311 and the middle channel 2 312 on the ball-serving reversing valve 31 are connected, and the ball valve 1 71 is closed and the ball valve 2 72 is opened. At this time, the ball valve 4 74 is still in the open state, and the ball valve 3 73 is in the closed state.

[0127] In the above step one, the upper channel 201 and the bottom channel four 206 are still connected, and the middle channel 202 and the bottom channel two 204 are still connected; water still flows from the upper channel 201 into the four-position six-way reversing valve 21, and water flows from the bottom channel four 206 into the connecting pipe four 18, and then enters the port four 64 from the connecting pipe four 18, and finally enters the circulation pipe two 12; but since the ball valve one 71 is closed and the ball valve two 72 is opened, the water flow will enter the ball valve core straight pipe 331 through the ball valve two 72 and the middle channel one 311, and finally flow out from the middle channel two 312, which can push the detector to continue to move toward the port one 61.

[0128] Step 2: When the detector moves to position 1A driven by the water flow, it will be sensed by the position sensor located at position 1A. At the same time, the PLC that receives the signal from the position sensor controls the four-position six-way reversing valve 21 to start, and the rotary valve core 220 rotates to connect the upper channel 201 with the bottom channel 1 203, and the middle channel 202 with the bottom channel 3 205; at this time, ball valve 2 72 and ball valve 4 74 are still in the open state, and ball valve 1 71 and ball valve 3 73 are still in the closed state.

[0129] In step 2, water flows from the bottom channel 1 203 into the connecting pipe 15, then enters the port 1 61 from the connecting pipe 15, and finally enters the circulation pipe 11. The water entering the circulation pipe 11 will flow in a counterclockwise direction, and may eventually return to the four-position six-way reversing valve 21 through the bottom channel 3 205, and flow out of the four-position six-way reversing valve 21 through the middle channel 202. During the above-mentioned flow process of the water flow, the detector will be driven to continue to move toward the port 2 62.

[0130] Step three: When the detector moves to position two B driven by the water flow, it will be detected by the position sensor located at position two B. The PLC that receives the signal from the position sensor controls the four-position six-way reversing valve 21 to start, and the rotary valve core 220 rotates to connect the upper channel 201 with the bottom channel two 204, and to connect the middle channel 202 with the bottom channel four 206; at this time, ball valve two 72 and ball valve four 74 are still in the open state, and ball valve one 71 and ball valve three 73 are still in the closed state.

[0131] In the above step 3, water flows from the bottom channel 204 into the connecting pipe 2 16, then enters the through port 2 62 from the connecting pipe 2 16, and finally enters the circulation pipe 2 12. The water entering the circulation pipe 2 12 will flow in a counterclockwise direction, and may eventually return to the four-position six-way reversing valve 21 from the bottom channel 4 206, and flow out of the four-position six-way reversing valve 21 from the middle channel 202. During the above flow process of the water flow, the detector will be driven to continue to move toward the through port 3 63.

[0132] Step 4: When the detector moves to position three C driven by the water flow, it will be sensed by the position sensor located at position three C. The PLC that receives the signal from the position sensor controls the four-position six-way reversing valve 21 to start, and the rotary valve core 220 rotates to connect the upper channel 201 with the bottom channel three 205, so that the middle channel 202 is connected with the bottom channel one 203; at this time, ball valve two 72 and ball valve four 74 are still in the open state, and ball valve one 71 and ball valve three 73 are still in the closed state.

[0133] In the above step 4, water flows from the bottom channel 3 205 into the connecting pipe 3 17, then enters the port 3 63 from the connecting pipe 3 17, and finally enters the circulation pipe 2 12. The water entering the circulation pipe 2 12 will flow in a counterclockwise direction, and may eventually return to the 4-position 6-way reversing valve 21 from the bottom channel 1 203, and flow out of the 4-position 6-way reversing valve 21 from the middle channel 202. During the above flow process of the water flow, the detector will be driven to continue to move toward the port 4 64.

[0134] Step 5: When the detector moves to position four D driven by the water flow, it will be sensed by the position sensor located at position four D. At the same time, the PLC that receives the sensing signal from the position sensor controls the four-position six-way reversing valve 21 to start, and the rotary valve core 220 rotates to connect the upper channel 201 with the bottom channel four 206, and the middle channel 202 with the bottom channel two 204; at this time, ball valve two 72 and ball valve four 74 are still in the open state, and ball valve one 71 and ball valve three 73 are still in the closed state.

[0135] In step 5, water flows from the bottom channel 206 into the connecting pipe 18, then enters the port 64 from the connecting pipe 18, and finally enters the circulation pipe 12. The water entering the circulation pipe 12 will flow in a counterclockwise direction, and may eventually return to the four-position six-way reversing valve 21 from the bottom channel 204, and flow out of the four-position six-way reversing valve 21 from the middle channel 202. During the above-mentioned flow process of the water flow, the detector will be driven to continue to move toward the middle channel 2 312.

[0136] When the detector enters the ball-serving reversing valve 31 from position 4D and moves back to the starting point of the circulation movement, that is, the middle channel 2 312, a circulation movement is completed. The circulation stage can be performed once or multiple times as needed. If the detector needs to be circulated multiple times in the circulation path module, the above steps 1 to 5 can be repeated.

[0137] During the circulation stage, ball valve two 72 and ball valve four 74 always remain in the open state, ball valve one 71 and ball valve three 73 always remain in the closed state, so that the detector can smoothly pass through the ball valves and complete the circulation movement, and the time-sharing rotation of the rotating valve core 220 in the four-position six-way reversing valve 21 changes the flow direction of the water flow, so that the water flows into the circulation passage from port one 61, port two 62, port three 63 and port four 64 in turn, so as to form a water flow in the circulation passage to drive the detector to circulate.

[0138] If, after a preset cycle or multiple cycles of movement have ended, the detector needs to be retracted from the test device, the ball collection phase begins.

[0139] Ball collection stage (the detector exits the test device after completing the cycle stage): After the detector completes the specified number of cycles, it will be located in the middle channel 2 312 again. At this time, the detector will move towards position 1 A under the push of the water flow. In the ball collection stage, we can choose to perform the following operations after the detector moves to the middle channel 2 312 (that is, after the cycle movement is completed) or after the detector moves to position 1 A:

[0140] The two ends of the ball receiving valve core elbow in the ball receiving reversing valve 32 are controlled to be connected to the intermediate channel 6 342 and the intermediate channel 7 343 respectively, so that the intermediate channel 6 342 and the intermediate channel 7 343 on the ball receiving reversing valve 32 are connected; at the same time, the ball valve 4 74 is closed and the ball valve 73 is opened. At this time, the ball valve 1 71 and the ball valve 2 72 can be in the open state or in the closed state; and in the ball receiving stage, the upper channel 201 of the four-position six-way reversing valve 21 is connected to the bottom channel 4 206, and the middle channel 202 is connected to the bottom channel 2 204.

[0141] After the above operation, the detector will move toward the ball receiving reversing valve 32 under the push of the water flow, and enter the ball receiving reversing valve 32 through the middle channel 6 342, and then enter the ball receiving pipe 52 through the middle channel 7 343. Since a position sensor is installed at position 6F in this embodiment, when the detector reaches position 6F, it will send out a sensing signal, which can be received by the PLC and prompt the operator through devices such as indicator lights. At this time, we can choose to turn off the water pump to stop the water from entering the device, and then the operator will open the closed pipe sleeve 2 54, and take the detector out of the test device after opening the closed pipe sleeve 2 54. The detector will exit the device from the outlet of the ball receiving pipe 52, and then the ball receiving stage is completed.

[0142] During the pitching stage, the circulation stage, and the ball receiving stage, when the inlet of the ball serving pipe 51 is closed by the closed pipe sleeve 1 53 and the ball receiving pipe 52 is closed by the closed pipe sleeve 2 54, the upper channel 201 serves as the water inlet of the entire test device, and the middle channel 202 serves as the water outlet of the entire test device. Water enters from the upper channel 201 and flows out from the middle channel 202, forming a flowing water flow in the test device, which pushes the detector forward. By rotating the rotating valve core 220 of the four-position six-way reversing valve 21, the bottom channel connected to the upper channel 201 and the middle channel 202 can be changed, thereby controlling the water flow to enter and exit the circulation pipe assembly from different ports, and cooperating with the one-way valve assembly to continuously push the detector forward to complete the circulation movement of the detector in the test device.

[0143] During the above-mentioned detector water circulation test process, the fluid path can be reversed by the up and down movement of the valve core of the ball-issuing reversing valve 31 and the ball-receiving reversing valve 32. The detector can be conveniently put into the circulation path module and retrieved from the circulation path module without disassembling the circulation pipeline assembly, and the circulation movement of the detector is not affected.

Claims

1. A pipeline detector water circulation test device, characterized in that: It includes a circulation channel module, a water inlet and outlet module, a ball throwing module and a ball collecting module; The circulation passage module comprises a ball-delivery reversing valve (31), a ball-receiving reversing valve (32), a circulation pipeline 1 (11), a circulation pipeline 2 (12), a one-way valve assembly, a ball valve 2 (72) and a ball valve 4 (74); The ball-serving reversing valve (31) comprises a valve body (2) (300), a reversing valve core (1), a movable connecting bracket (1) (320) for driving the reversing valve core (1) to move up and down along the inner wall of the valve body (2) (300), an upper valve cover (1) (301) and a lower valve cover (1) (302); an intermediate channel (1) (311), an intermediate channel (2) (312) and an intermediate channel (313) are provided in the radial direction of the outer wall of the valve body (2) (300); the intermediate channel (1) (311) and the intermediate channel (2) (312) are located on the same straight line, and the intermediate channel (313) is located between the intermediate channel (1) (311) and the intermediate channel (2) (312); the reversing valve core (1) is located in the inner cavity of the valve body (2) (300), and the reversing valve core (1) comprises a movable connecting bracket (320) for driving the reversing valve core (1) to move up and down along the inner wall of the valve body (2) (300); an intermediate channel (1) (311), an intermediate channel (2) (312) and an intermediate channel (313) are provided in the radial direction of the outer wall of the valve body (2) (300); the intermediate channel (1) (311) and the intermediate channel (2) (312) are located on the same straight line, and the intermediate channel (313) is located between the intermediate channel (1) (311) and the intermediate channel (2) (312); the reversing valve core (1) is located in the inner cavity of the valve body (2) (300), and the reversing valve core (1) comprises a movable connecting bracket (320) for driving the intermediate channel (1) (311) and the intermediate channel (2) (312) A straight ball-serving valve core straight pipe (331) for connecting channel 1 (311) and intermediate channel 2 (312) and an arc-shaped ball-serving valve core bent pipe (330) for connecting intermediate channel 2 (312) and intermediate channel 3 (313), the ball-serving valve core straight pipe (331) and the ball-serving valve core bent pipe (330) are stacked up and down; a valve stem (321) for driving the movable connecting bracket (320) to move up and down is also provided on the movable connecting bracket (320), one end of the valve stem (321) passes through a through hole located in the middle of the upper valve cover (301) or the lower valve cover (302); a waterproof sealing layer (1) is provided at the connection between the valve stem (321) and the upper valve cover (301) or the lower valve cover (302); The ball receiving reversing valve (32) comprises a valve body (4), a reversing valve core (2), a movable connecting bracket (2) for driving the reversing valve core (2) to move up and down along the inner wall of the valve body (4), an upper valve cover (2) and a lower valve cover (2); an intermediate channel (5) (341), an intermediate channel (6) (342) and an intermediate channel (7) (343) are provided in the radial direction of the outer wall of the valve body (4); the intermediate channel (5) (341) and the intermediate channel (6) (342) are located on the same straight line, and the intermediate channel (7) (343) is located between the intermediate channel (5) (341) and the intermediate channel (6) (342); the reversing valve core (2) is located in the inner cavity of the valve body (4). The reversing valve core 2 comprises a straight ball valve core straight pipe for connecting the intermediate channel 5 (341) and the intermediate channel 6 (342) and an arc ball valve core bent pipe for connecting the intermediate channel 6 (342) and the intermediate channel 7 (343), and the straight ball valve core pipe and the bent ball valve core pipe are stacked up and down; the movable connecting bracket 2 is also provided with a valve stem 2 for driving the movable connecting bracket 2 to move up and down, and one end of the valve stem 2 passes through a through hole located in the middle of the upper valve cover 2 or the lower valve cover 2; a waterproof sealing layer 2 is provided at the connection between the valve stem 2 and the upper valve cover 2 or the lower valve cover 2; The middle channel 2 (312) is connected to one end of the circulation pipeline 1 (11), the other end of the circulation pipeline 1 (11) is connected to the middle channel 6 (342), the middle channel 5 (341) is connected to one end of the circulation pipeline 2 (12), the other end of the circulation pipeline 2 (12) is connected to the middle channel 1 (311); The ball pitching module comprises a ball serving pipeline (51) and a closed pipe sleeve (53) connected to the entrance of the ball serving pipeline (51); one end of the ball serving pipeline (51) is connected to the middle channel (313); the ball serving pipeline (51) is connected to the circulation pipeline (12) via a branch pipeline (55); a ball valve (71) is connected to the branch pipeline (55) on the side close to the circulation pipeline (12); The ball receiving module comprises a ball receiving pipeline (52) and a closed pipe sleeve 2 (54) connected to the outlet of the ball receiving pipeline (52); one end of the ball receiving pipeline (52) is connected to the intermediate channel 7 (343); the ball receiving pipeline (52) is connected to the circulation pipeline 2 (12) via a branch pipeline 2 (56); a ball valve 3 (73) is connected in the branch pipeline 2 (56) and close to the circulation pipeline 2 (12); The circulation pipe 1 (11) is also provided with a first port (61) for communicating with the water inlet and outlet modules; the circulation pipe 2 (12) is also provided with a second port (62), a third port (63) and a fourth port (64) for communicating with the water inlet and outlet modules; The one-way valve assembly is connected to the circulation pipe 1 (11) and the circulation pipe 2 (12), and includes a one-way valve 1 (41) located between the port 4 (64) and the port 1 (61), a one-way valve 2 (42) located between the port 1 (61) and the port 2 (62), a one-way valve 3 (43) located between the port 2 (62) and the port 3 (63), and a one-way valve 4 (44) located between the port 3 (63) and the port 4 (64); The ball valve 2 (72) is connected to the circulation pipeline 2 (12) and is located between the intermediate channel 1 (311) and the port 4 (64); the ball valve 4 (74) is connected to the circulation pipeline 2 (12) and is located between the intermediate channel 5 (341) and the port 2 (62); The connection between the branch pipe 1 (55) and the circulation pipe 2 (12) is located between the ball valve 2 (72) and the check valve 4 (44); the connection between the branch pipe 2 (56) and the circulation pipe 2 (12) is located between the ball valve 4 (74) and the check valve 3 (43); The water inlet and outlet module comprises a four-position six-way reversing valve (21) and four connecting pipes; the four-position six-way reversing valve (21) comprises a valve body (200) and a rotating valve core (220) located in the inner cavity of the valve body (200) and rotatably connected to the valve body (200); an upper channel (201), a middle channel (202) and four bottom channels are distributed in sequence from top to bottom on the side wall of the valve body (200); the four bottom channels are bottom channel one (203), bottom channel two (204), bottom channel three (205) and bottom channel four (206) which are uniformly distributed in sequence along the radial direction; an upper valve cavity (210) communicating with the upper channel (201) and a middle channel (206) communicating with the middle channel (207) are provided between the rotating valve core (220) and the inner wall of the valve body (200). 02) is connected to the middle valve cavity (211), the upper valve cavity (210) and the middle valve cavity (211) are both annular and extend radially along the outer wall of the rotating valve core (220); the rotating valve core (220) is provided with a valve core channel 1 (221) whose upper end opening is connected to the upper valve cavity (210) and a valve core channel 2 (222) whose upper end opening is connected to the middle valve cavity (211); the lower end opening of the valve core channel 1 (221) and the lower end opening of the valve core channel 2 (222) are symmetrically distributed on the side wall of the rotating valve core (220), and the lower end opening of the valve core channel 1 (221) and the lower end opening of the valve core channel 2 (222) are both located at the same height as the four bottom channels; a waterproof sealing layer 3 is also provided at the connection between the rotating valve core (220) and the valve body 1 (200); The first port (61) and the first bottom channel (203), the second port (62) and the second bottom channel (204), the third port (63) and the third bottom channel (205), and the fourth port (64) and the fourth bottom channel (206) are connected via a connecting pipe respectively; The ball-delivering reversing valve (31), the one-way valve assembly, the second ball valve (72), the fourth ball valve (74), the first circulation pipeline (11), the second circulation pipeline (12) and the receiving ball reversing valve (32) together form a circulation passage for the detector to pass through.

2. A pipeline detector water circulation test device according to claim 1, characterized in that: The valve stem 1 (321), the valve stem 2, the ball valve 1 (71), the ball valve 2 (72), the ball valve 3 (73), the ball valve 4 (74) and the rotary valve core (220) are respectively connected to a driving actuator, and the driving actuator is connected to the PLC.

3. A pipeline detector water circulation test device according to claim 2, characterized in that: A position sensor capable of sensing the position of the detector is respectively arranged inside the middle channel 2 (312), at the intersection of the port 1 (61) and the circulation pipe 1 (11) on the side close to the check valve 2 (42), at the intersection of the port 2 (62) and the circulation pipe 2 (12) on the side close to the check valve 3 (43), at the intersection of the port 3 (63) and the circulation pipe 2 (12) on the side close to the check valve 4 (44), at the intersection of the port 4 (64) and the circulation pipe 2 (12) on the side close to the ball-delivering reversing valve (31), and in the ball-receiving pipe (52) or in the middle channel 7 (343), and the position sensor is connected to the PLC.

4. A pipeline detector water circulation test device according to claim 3, characterized in that: A barrier net is provided at one end of the first port (61) close to the circulation pipe one (11), and at one end of the second port (62), the third port (63), and the fourth port (64) close to the circulation pipe two (12), respectively. The barrier net allows water to pass through but does not allow the detector to pass through.

5. A pipeline detector water circulation test device according to claim 4, characterized in that: The circulation passage is in the shape of a square, and the four corners of the square are transitioned into arc segments; the first opening (61), the second opening (62), the third opening (63) and the fourth opening (64) are respectively located in the middle positions of the four sides of the square.

6. A pipeline detector water circulation test device according to claim 5, characterized in that: The first through-port (61), the second through-port (62), the third through-port (63), the fourth through-port (64), the first circulation conduit (11), the second circulation conduit (12), the four connecting through-ports, the ball-serving conduit (51), the ball-receiving conduit (52), the first branch conduit (55) and the second branch conduit (56) are all circular tubes with the same diameter.

7. A pipeline detector water circulation test device according to claim 6, characterized in that: The upper valve cavity (210) and the middle valve cavity (211) are of the same shape and size; the valve core channel 1 (221) and the valve core channel 2 (222) are in the shape of a circular tube, and the valve core channel 1 (221) and the valve core channel 2 (222) have the same diameter; the upper channel (201), the middle channel (202) and the bottom channel are in the shape of a circular tube, and the upper channel (201), the middle channel (202), the bottom channel and the valve core channel 1 (221) have the same diameter.

8. A detector water circulation test method, characterized in that: The method is carried out using a pipeline detector water circulation test device as described in any one of claims 1 to 7, comprising the following steps: Step 1: connect the upper channel (201) to the external water inlet pipe, and connect the middle channel (202) to the external drainage pipe; use the second sealing pipe sleeve (54) to seal the outlet of the ball receiving pipe (52); Step 2: Open the sealing sleeve 1 (53), insert the detector from the entrance of the ball-serving pipeline (51) into the ball-serving pipeline (51) and place it between the branch pipeline 1 (55) and the ball-serving reversing valve (31); after the detector enters the ball-serving pipeline (51), use the sealing sleeve 1 (53) to seal the entrance of the ball-serving pipeline (51); control the ball valve 1 (71) to open, the ball valve 2 (72) to close, and the ball valve 4 (74) to open; at the same time, control the two ends of the ball-serving valve core curved pipe (330) in the ball-serving reversing valve (31) to communicate with the middle channel 2 (312) and the middle channel 3 (313) respectively; control the two ends of the ball-receiving valve core straight pipe in the ball-receiving reversing valve (32) to communicate with the middle channel 5 (341) and the middle channel 6 (342) respectively; Then, the upper channel (201) and the middle channel (202) are connected to a bottom channel respectively, and water is introduced from the upper channel (201) into the four-position six-way reversing valve (21), forming a water flow that pushes the detector forward. The detector moves toward the middle channel 2 (312) under the push of the water flow; Step 3: When the detector moves to the middle channel 2 (312) under the impetus of the water flow, the direction of the water flow entering and exiting the circulation passage is controlled by the four-position six-way reversing valve (21), so that a water flow is formed in the circulation passage to push the detector forward along the path of the port 1 (61), the port 2 (62), the port 3 (63), the port 4 (64), and the middle channel 2 (312) to perform at least one circulation movement; when the detector moves along the above path with the middle channel 2 (312) as the starting point under the impetus of the water flow and returns to the middle channel 2 (312) again, one circulation movement is completed; During the cyclic movement, the control ball valve 1 (71) and the ball valve 3 (73) are in a closed state, and the control ball valve 2 (72) and the ball valve 4 (74) are in an open state; During the cyclic movement, the two ends of the ball-delivering valve core straight tube (331) in the ball-delivering reversing valve (31) are controlled to be connected to the intermediate channel 1 (311) and the intermediate channel 2 (312) respectively; the two ends of the ball-receiving valve core straight tube in the ball-receiving reversing valve (32) are controlled to be connected to the intermediate channel 5 (341) and the intermediate channel 6 (342) respectively; Step 4: After the circulation movement is completed, when the detector moves to the middle channel 2 (312) again or moves to the junction of the port 1 (61) and the circulation pipe 1 (11) near the side of the check valve 2 (42), the two ends of the ball valve core bend pipe in the ball receiving reversing valve (32) are controlled to be connected to the middle channel 6 (342) and the middle channel 7 (343) respectively; at the same time, the ball valve 4 (74) is closed and the ball valve 3 (73) is opened; the direction of the water flow in and out of the circulation passage is controlled by the four-position six-way reversing valve (21), and the water flow pushes the detector to flow in the direction of the ball receiving pipe (52); Step 5: When the detector is moved into the ball receiving pipe (52) under the push of the water flow, the second sealing pipe sleeve (54) is opened to take out the detector.

9. A detector water circulation test method according to claim 8, characterized in that: In step 3, during a single cycle of movement, the control method of the four-position six-way reversing valve (21) is as follows: Step 3.1: When the detector moves to the middle channel 2 (312), the upper channel (201) of the four-position six-way reversing valve (21) is controlled to communicate with the bottom channel 4 (206), and the middle channel (202) is connected with the bottom channel 2 (204); the water flow pushes the detector to continue to move toward the direction of the port 1 (61); Step 3.2: When the detector moves to the junction of the port 1 (61) and the circulation pipe 1 (11) near the side of the check valve 2 (42) driven by the water flow, the upper channel (201) of the four-position six-way reversing valve (21) is controlled to be connected with the bottom channel 1 (203), and the middle channel (202) is connected with the bottom channel 3 (205); the water flow pushes the detector to continue to move toward the port 2 (62); Step 3.3: When the detector moves to the junction of the second port (62) and the second circulation pipe (12) under the drive of the water flow and close to the side of the one-way valve (43) in the direction, the upper channel (201) of the four-position six-way reversing valve (21) is controlled to communicate with the second bottom channel (204), and the middle channel (202) is controlled to communicate with the fourth bottom channel (206); the water flow pushes the detector to continue to move in the direction of the third port (63); Step 3.4: When the detector moves to the junction of the third port (63) and the second circulation pipe (12) under the drive of the water flow and is close to the side of the one-way valve (44) in the direction, the upper channel (201) of the four-position six-way reversing valve (21) is controlled to be connected with the bottom channel (205), and the middle channel (202) is connected with the bottom channel (203); the water flow pushes the detector to continue to move toward the direction of the fourth port (64); Step 3.5: When the detector moves to the junction of the fourth port (64) and the second circulation pipe (12) close to the side of the ball-serving reversing valve (31) under the drive of the water flow, the upper channel (201) of the four-position six-way reversing valve (21) is controlled to be connected with the fourth bottom channel (206), and the middle channel (202) is connected with the second bottom channel (204); the water flow pushes the detector to continue to move in the direction of the second middle channel (312).

10. A detector water circulation test method according to claim 9, characterized in that: In step 2, the upper channel (201) of the four-position six-way reversing valve (21) is controlled to communicate with the bottom channel four (206), and the middle channel (202) is controlled to communicate with the bottom channel two (204).

11. A detector water circulation test method according to claim 10, characterized in that: In step 4, the upper channel (201) of the four-position six-way reversing valve (21) is maintained in a connected state with the bottom channel four (206), and the middle channel (202) is maintained in a connected state with the bottom channel two (204).

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