Rapid detection digitization device for water supply and drainage pipeline closed water test and test method

Abstract

The invention relates to the technical field of pipeline closed water tests, in particular to a water supply and drainage pipeline closed water test rapid detection digitization device which comprises a pipeline pre-detection device and a closed water test device. According to the invention, before the closed water test, the pipeline pre-detection device is used for carrying out pre-water leakage detection on the pipeline, and the plurality of water leakage detection assemblies are respectively mounted at the pipeline joint and the pipe well interface, so that the pipeline joint and the pipe well interface are automatically detected in real time, the workload of testers is reduced, and the test efficiency is improved through the closed water test device. Automatic detection of the whole process of the closed water test of the municipal drainage pipeline is achieved, meanwhile, the liquid level sensor, the liquid level controller, the water pump and the flow meter are adopted to control the test water head to be constant, the accuracy of the closed water test is improved, the influence of human factors is reduced, and the influence of mastering experience and judgment standards of testers on the result is avoided; on the premise of ensuring that the precision meets the requirement, the test efficiency and accuracy are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline water tightness tests, and particularly relates to a digital device and test method for rapid detection of water tightness tests for water supply and drainage pipelines. Background Art

[0002] Water supply and drainage pipelines refer to the abbreviations of water supply systems and drainage systems. The water supply system mainly refers to a water system with external pressure, such as tap water, supply and return water in industry, etc., while the drainage system is a water system that flows by its own gravity and pipeline slope, such as rainwater, wastewater, and sewage systems. In municipal pipeline projects, the tightness of municipal pipelines directly affects the functional quality of pipeline projects. The municipal pipeline water tightness test is one of the tests reflecting pipeline functionality. Therefore, before acceptance and delivery, the municipal pipeline must undergo a pipeline tightness test (water tightness test).

[0003] Chinese Patent Publication No. CN116240970A discloses a water supply and drainage construction technology for a commercial supermarket square, including a water supply system construction technology and a drainage system construction technology; among them, the water supply system construction technology includes the following steps: installation preparation; prefabrication and processing; pipeline installation, respectively carrying out main pipe installation, riser installation, and branch pipe installation; pipeline pressure test; anti-corrosion and heat preservation treatment; pipeline water flushing; the drainage system construction technology includes the following steps: installation preparation; prefabrication and processing; pipeline installation, and the pipeline installation is respectively main pipe installation, riser installation, and branch pipe installation; pipeline ball passing and water tightness test.

[0004] In the prior art, the municipal pipeline water tightness test is usually completed using a stopwatch and a measuring cylinder. However, it is found in daily inspections that after the test starts, continuous water replenishment is required to keep the water level at the specified height. The workload of the test personnel is large, and it is not easy to control the accuracy of the test results. Especially for pipe sections with a slightly larger water seepage volume, the speed of manual water replenishment cannot keep up with the seepage speed, and the water seepage volume cannot be measured. Moreover, when replenishing water, it is easy to cause fluctuations in the water surface, resulting in reading errors. The experience and judgment criteria of the test personnel have a great impact on the results, thus leading to inaccurate results of the pipeline water tightness test.

[0005] In summary, developing a digital device and test method for rapid detection of water tightness tests for water supply and drainage pipelines is still a key problem that urgently needs to be solved in the technical field of pipeline water tightness tests. Summary of the Invention

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a digital device and test method for rapid detection of water tightness tests for water supply and drainage pipelines.

[0007] To achieve the above purpose, the present invention provides the following technical solutions: A digital device for rapid detection of the water tightness test of water supply and drainage pipes, including a pipe pre-detection device and a water tightness test device. The water tightness test device includes a fixing frame, a liquid level measuring pipe, a water replenishing pipe, a water pump, a connecting pipe, a placing frame, a telescopic seat, a mounting plate, a collection box, a power control component and a liquid level controller. A liquid level sensor is fixedly installed inside the liquid level measuring pipe. A flow meter is fixedly installed on the top of the water replenishing pipe. One end of the water pump is fixedly installed with one end of the water replenishing pipe, and the other end of the water pump is fixedly communicated with one end of the connecting pipe. The liquid level controller is electrically connected with the liquid level sensor. A plurality of water leakage detection components are arranged inside the collection box, and the bottom of the pipe pre-detection device is movably installed on the inner wall of the placing frame. The pipe pre-detection device includes a crawling robot and a water leakage detector. The top of the crawling robot is fixedly installed with the bottom of the water leakage detector, and a water leakage induction rope is arranged at the bottom of the crawling robot. Driving wheels are symmetrically and rotatably installed at both ends of the bottom of the crawling robot.

[0008] The present invention is further arranged as follows: The water leakage induction rope is electrically connected with the water leakage detector. The power control component is electrically connected with the liquid level controller. A plurality of auxiliary support rods are symmetrically and rotatably installed at both ends of the crawling robot. Two side plates are symmetrically welded at both ends of the top of the fixing frame. Two convex plates are symmetrically fixedly installed on the outer wall of the liquid level measuring pipe. The liquid level measuring pipe is clamped with the inner wall of the side plate through the convex plates at its two ends.

[0009] The present invention is further arranged as follows: Three support rods are inserted in an annular array on the outer edge of the fixing frame, and one end of the support rod is welded with the top of the telescopic seat. The outer edge of the fixing frame is fixedly installed with one end of the mounting plate. The bottoms of the placing frame and the collection box are both fixedly installed on the top of the mounting plate.

[0010] The present invention is further arranged as follows: It further includes a pipe pre-detection module, a robot control module, a warning module, a power control module, a water pump control module, a liquid level control module, a liquid level sensing module, a flow control module, a water leakage detection module and a water tightness test terminal: The pipe pre-detection module is used to control the water leakage detector. Before the water tightness test of the pipe to be tested, pre-water leakage detection of the pipe to be tested is realized through the water leakage detector and the water leakage induction rope. When it is detected that there is a water leakage situation in the pipe, the water leakage signal is timely transmitted to the water tightness test terminal; The robot control module can control the start and stop of the crawling robot to realize the movement of the crawling robot on the pipe to be tested for pre-water leakage detection; The warning module is used to receive the water leakage signals of the water leakage detector and the water leakage detection module, and send a prompt message through the water tightness test terminal to prompt the test personnel in time; The power control module is used to control the power-on situation of the liquid level control module; The water pump control module is used to receive the water replenishment signal from the liquid level control module, control the water pump to start, and replenish water to the inspection well through the water replenishment pipe; The liquid level control module is used to control the water pump control module to start for water replenishment according to the pre-liquid level value of the closed water test terminal and the actual liquid level value feedback by the liquid level control module, so as to ensure the constant test water head liquid level value of the inspection well; The liquid level sensing module is used to detect the actual liquid level value of the test water head of the inspection well in real time, and feedback the actual liquid level value signal to the liquid level control module in real time; The flow control module records the water replenishment volume of the water replenishment pipe through the flow meter, and feeds back the water replenishment volume to the closed water test terminal in real time; The leakage detection module is used to control the leakage detection component. During the closed water test of the pipeline to be tested, the leakage detection of the pipeline to be tested is realized through the leakage detection component. When it is detected that there is a leakage at the pipeline connection, the leakage signal is transmitted to the closed water test terminal in time; The closed water test terminal is signal-connected to the pipeline pre-detection module, the warning module, the liquid level control module, the flow control module and the leakage detection module through the terminal device, so as to realize the leakage monitoring, automatic water replenishment, water replenishment volume recording and automatic calculation of the closed water test result of the pipeline to be tested.

[0011] The present invention also provides a test method for rapid detection of closed water test of water supply and drainage pipelines, including the following steps: S1. Do a good job in preparation and plugging work before the closed water test; S2. Determine the test water head of the inspection well, and install the closed water test device at the inspection well; S3. Before the closed water test, use the pipeline pre-detection device to pre-detect the leakage of the pipeline, and install multiple leakage detection components at the pipeline connection and the pipe well interface respectively; S4. Inject water into the pipeline to be tested and soak it for 24h; S5. Start timing detection through the terminal. When the detection time reaches 30-50 minutes, stop water replenishment and stop timing. Read the water replenishment volume through the terminal, which is the seepage volume of the pipeline to be tested during this time period; S6. Carry out drainage work after inspection and acceptance; S7. Complete the pipeline backfilling work.

[0012] The present invention is further set as: in step S1, it includes the following steps: S11. After the concrete of the inspection well meets the design requirements and reaches 100% of the design strength, test whether the seepage volume of the sewage well section meets the design requirements and technical standards to ensure that the sewage does not leak; S12. Clean the floating scum in the inspection well before water injection; S13. Seal the reserved holes in the test well section and both ends at the upstream and downstream of the pipeline to be tested by using sealing and blocking measures. Park the sprinkler truck on the upstream trench side of the well section, and strictly check the irrigation and drainage gates to prevent leakage. S14. Seal the connections between pipelines and the connections between pipelines and inspection well bodies.

[0013] The present invention is further configured as follows: In step S14, it includes the following steps: S141. Before docking the pipelines, check the quality of the socket and spigot of the pipelines. After confirming no damage, put the rubber ring into the first annular groove of the spigot, and after confirming firm fixation without distortion, apply a uniform layer of lubricating oil. S142. Place sleepers on the socket and spigot ends of the pipelines, and adjust the sleepers to make the socket and spigot of the pipelines on the same horizontal plane, and leave a gap of 2 - 3 cm between the pipelines. S143. Measure the maximum depth of the socket, record it, and make corresponding marks on the spigot. Fix the chain block in the collar of the connecting pipeline, and manually pull the chain block until the socket and spigot are fully docked in place. S144. Clean the outer wall of the pipeline, evenly apply 1 - 3 layers of polyvinyl chloride binder, immediately and evenly sprinkle dry medium - coarse sand, and air dry for 20 - 35 minutes. S145. Pour micro - expansive concrete into the gap between the inspection well opening and the outer wall of the pipeline to tightly connect the inspection well and the pipeline through the micro - expansive concrete.

[0014] The present invention is further configured as follows: In step S2, determine the test water head according to the comparison result between the designed water head and the inner wall of the top of the pipeline and the standard height of the upstream inspection wellhead. Fix the water - tight test device above the inspection wellhead through three expansion seats, and level the water - tight test device.

[0015] The present invention is further configured as follows: In step S5, it includes the following steps: S51. After soaking the pipeline to be tested for 24 hours, connect one end of the connecting pipe to the water source, start debugging the equipment, and drain the air in the water supply pipe. S52. Adjust the depth of the liquid - level measuring tube extending into the inspection well to make the probe of the liquid - level sensor on the same horizontal plane as the test water head. At this time, power on the liquid - level controller, and this liquid - level value is the pre - set liquid - level value. S53. When the test water head reaches the specified water head, start the equipment to supply water. When the water surface first reaches the pre - set liquid - level value of the test water head, start timing, and at the same time, clear the reading of the flow meter. S54. At this time, the equipment will automatically supply water according to the seepage situation of the pipeline to keep the test water head constant. S55. After reaching the specified test time, the corresponding water replenishment amount and the result of the water tightness test can be read out through the test terminal.

[0016] Adopting the technical solution provided by the present invention, compared with the known public technologies, it has the following beneficial effects: (1) In the present invention, before the water tightness test, a pipeline pre-detection device is used to pre-detect the leakage of the pipeline, and the pipeline damage situation is excluded in advance before the water tightness test to ensure the accuracy of the pipeline water tightness test. Multiple leakage detection components are respectively installed at the pipeline connection and the pipe well interface, so as to automatically detect the pipeline connection and the pipe well interface in real time, without the need for testers to detect multiple times. The workload of testers is reduced through the automated leakage detection technology. At the same time, when there is water seepage at the pipeline connection and the pipe well interface, the leakage detection component can transmit the leakage signal to the terminal in time, facilitating the testers to repair in time.

[0017] (2) In the present invention, by setting up a water tightness test device, the depth of the liquid level measuring tube extending into the inspection well is adjusted so that the probe of the liquid level sensor is on the same horizontal plane as the test water head. At this time, the liquid level controller is powered on, and this liquid level value is the pre-set liquid level value. When the test water head reaches the specified water head, the equipment starts to replenish water. When the water surface first reaches the pre-set liquid level value of the test water head, timing starts, and at the same time, the reading of the flow meter is cleared. At this time, the equipment will automatically replenish water according to the pipeline water seepage situation to keep the test water head constant. After reaching the specified test time, the corresponding water replenishment amount and the result of the water tightness test can be read out through the test terminal. If the water seepage amount of the pipeline within 30 minutes is less than the allowable water seepage amount, it is qualified. Through the water tightness test device, the whole process of the water tightness test of the municipal drainage pipeline is realized with automatic detection. At the same time, a liquid level sensor, a liquid level controller, a water pump and a flow meter are used to control the constancy of the test water head, improving the accuracy of the water tightness test, reducing the influence of human factors, and avoiding the influence on the result caused by the experience and judgment criteria of the testers. On the premise of ensuring that the accuracy meets the requirements, both the test efficiency and accuracy have been significantly improved. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a digital device for rapid detection of the water tightness test of a water supply and drainage pipeline; Figure 2 It is a schematic structural diagram of the pipeline pre-detection device of a digital device for rapid detection of the water tightness test of a water supply and drainage pipeline; Figure 3 It is a schematic top view structure diagram of a digital device for rapid detection of the water tightness test of a water supply and drainage pipeline; Figure 4 It is a top view of a digital device for rapid detection of the water tightness test of a water supply and drainage pipeline; Figure 5Front sectional view of a water tightness test device of a digital device for rapid detection of water tightness test of water supply and drainage pipes; Figure 6 System module diagram of a digital device for rapid detection of water tightness test of water supply and drainage pipes; Figure 7 Method flow chart of a test method for rapid detection of water tightness test of water supply and drainage pipes.

[0019] Description of marks in the figure: 1. Pipeline pre - detection device; 2. Water tightness test device; 11. Crawling robot; 12. Leakage detector; 13. Auxiliary support rod; 14. Driving wheel; 15. Leakage induction rope; 21. Fixed frame; 22. Support rod; 23. Liquid level measuring tube; 24. Water supply pipe; 25. Side plate; 26. Flow meter; 27. Water pump; 28. Connecting pipe; 29. Placing frame; 30. Telescopic seat; 31. Leakage detection component; 32. Mounting plate; 33. Collection box; 34. Convex plate; 35. Liquid level sensor; 36. Power control component; 37. Liquid level controller; 3. Pipeline pre - detection module; 4. Robot control module; 5. Warning module; 6. Power control module; 7. Water pump control module; 8. Liquid level control module; 9. Liquid level sensing module; 10. Flow control module; 16. Leakage detection module; 17. Water tightness test terminal. Specific implementation mode

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The present invention will be further described below with reference to the embodiments.

[0022] Embodiment 1: Please refer to Figure 1 - Figure 6As shown in the figure, a digital device for rapid detection of the water tightness test of water supply and drainage pipes includes a pipeline pre-detection device 1 and a water tightness test device 2. The water tightness test device 2 includes a fixed frame 21, a liquid level measuring tube 23, a water supply pipe 24, a water pump 27, a connecting pipe 28, a placement frame 29, a telescopic seat 30, a mounting plate 32, a collection box 33, a power control component 36 and a liquid level controller 37. A liquid level sensor 35 is fixedly installed inside the liquid level measuring tube 23. A flow meter 26 is fixedly installed at the top of the water supply pipe 24. One end of the water pump 27 is fixedly installed with one end of the water supply pipe 24, and the other end of the water pump 27 is fixedly communicated with one end of the connecting pipe 28. The liquid level controller 37 is electrically connected to the liquid level sensor 35. A plurality of leakage detection components 31 are arranged inside the collection box 33. The bottom of the pipeline pre-detection device 1 is movably installed on the inner wall of the placement frame 29. The pipeline pre-detection device 1 includes a crawling robot 11 and a leakage detector 12. The top of the crawling robot 11 is fixedly installed with the bottom of the leakage detector 12. A leakage induction rope 15 is arranged at the bottom of the crawling robot 11. Driving wheels 14 are symmetrically and rotatably installed at both ends of the bottom of the crawling robot 11; In this embodiment, the leakage induction rope 15 is electrically connected to the leakage detector 12. The power control component 36 is electrically connected to the liquid level controller 37. A plurality of auxiliary support rods 13 are symmetrically and rotatably installed at both ends of the crawling robot 11. Two side plates 25 are symmetrically welded at both ends of the top of the fixed frame 21. Two convex plates 34 are symmetrically and fixedly installed on the outer wall of the liquid level measuring tube 23. The liquid level measuring tube 23 is clamped to the inner wall of the side plate 25 through the convex plates 34 at both ends thereof; Three support rods 22 are inserted into the outer edge of the fixed frame 21 in an annular array, and one end of the support rod 22 is welded to the top of the telescopic seat 30. The outer edge of the fixed frame 21 is fixedly installed with one end of the mounting plate 32. The bottoms of the placement frame 29 and the collection box 33 are both fixedly installed on the top of the mounting plate 32; In this embodiment, it further includes a pipeline pre-detection module 3, a robot control module 4, a warning module 5, a power control module 6, a water pump control module 7, a liquid level control module 8, a liquid level sensing module 9, a flow control module 10, a water leakage detection module 16, and a water tightness test terminal 17: The pipeline pre-detection module 3 is used to control the water leakage detector 12. Before the water tightness test is carried out on the pipeline to be tested, pre-water leakage detection of the pipeline to be tested is realized through the water leakage detector 12 and the water leakage induction rope 15. When a water leakage situation in the pipeline is detected, the water leakage signal is transmitted to the water tightness test terminal 17 in a timely manner; The robot control module 4 can control the start and stop of the crawling robot 11 to realize the movement of the crawling robot 11 on the pipeline to be tested for pre-water leakage detection; The warning module 5 is used to receive the water leakage signals from the water leakage detector 12 and the water leakage detection module 16, and send a prompt message through the water tightness test terminal 17 to prompt the test personnel in a timely manner; The power control module 6 is used to control the power-on situation of the liquid level control module 8; The water pump control module 7 is used to receive the water replenishment signal from the liquid level control module 8, control the water pump 27 to start, and replenish water to the inspection well through the water replenishment pipe 24; The liquid level control module 8 is used to control the water pump control module 7 to start for water replenishment according to the pre-set liquid level value of the water tightness test terminal 17 and the actual liquid level value feedback by the liquid level control module 8, so as to ensure that the test water head liquid level value of the inspection well is constant; The liquid level sensing module 9 is used to detect the actual liquid level value of the test water head of the inspection well in real time, and feedback the actual liquid level value signal to the liquid level control module 8 in real time; The flow control module 10 records the water replenishment volume of the water replenishment pipe 24 through the flow meter 26, and feeds back the water replenishment volume to the water tightness test terminal 17 in real time; The water leakage detection module 16 is used to control the water leakage detection component 31. During the water tightness test of the pipeline to be tested, water leakage detection of the pipeline to be tested is realized through the water leakage detection component 31. When a water leakage situation at the pipeline connection is detected, the water leakage signal is transmitted to the water tightness test terminal 17 in a timely manner; The water tightness test terminal 17 is signal-connected to the pipeline pre-detection module 3, the warning module 5, the liquid level control module 8, the flow control module 10, and the water leakage detection module 16 through the terminal device to realize water leakage monitoring, automatic water replenishment, water replenishment volume recording, and automatic calculation of the water tightness test result of the pipeline to be tested.

[0023] In this embodiment, before the water tightness test, the pipeline is pre-detected for water leakage using the pipeline pre-detection device 1 (the tester places the crawling robot 11 on the pipeline and adjusts the positions of the four auxiliary support rods 13 so that the crawling robot 11 can move smoothly on the pipeline. The water leakage induction rope 15 is attached to the pipeline. The tester controls the crawling robot 11 to move automatically along the pipeline through the controller. When there is a water leakage at a certain place, the water leakage induction rope 15 comes into contact with water. When water infiltrates between the two sensing wires in the rope, the water leakage can be automatically detected, and then the water leakage signal is transmitted to the terminal through the water leakage detector 12), to rule out pipeline damage in advance before the water tightness test, ensure the accuracy of the pipeline water tightness test, and install multiple water leakage detection components 31 at the pipeline joints and the wellhead interfaces respectively, so as to automatically detect the pipeline joints and the wellhead interfaces in real time (both the pipeline pre-detection device 1 and the water leakage detection components 31 achieve water leakage detection through the principle that water can conduct electricity), without the need for the tester to perform multiple detections, reducing the workload of the tester through automated water leakage detection technology. At the same time, when there is water seepage at the pipeline joints and the wellhead interfaces, the water leakage detection components 31 can promptly transmit the water leakage signal to the terminal, facilitating the tester to carry out repairs in a timely manner.

[0024] Embodiment 2: Please refer to Figure 1 - Figure 7 As shown in the figure, the present invention also provides a test method for rapid detection of the water tightness test of water supply and drainage pipelines, including the following steps: Step 1. Prepare and block before the water tightness test, including the following steps: S11. After the inspection well concrete meets the design requirements and reaches 100% of the design strength, test whether the water seepage volume of the sewage well section meets the design requirements and technical standards to ensure that the sewage does not leak. S12. Clean the floating scum in the inspection well before water injection. S13. Seal the reserved holes in the test well section and the two ends of the upstream and downstream of the pipeline to be tested by adopting sealing and blocking measures. The sprinkler truck stops at the upstream groove side of the well section, and at the same time, strictly check the irrigation and drainage gates to prevent leakage. S14. Seal the pipeline joints and the joints between the pipeline and the inspection well body, including the following steps: S141. Before the pipeline is connected to the pipeline, check the quality of the socket and spigot of the pipeline. After confirming no damage, put the rubber ring into the first ring groove of the spigot, and after confirming that it is firmly fixed and not twisted, apply a uniform layer of lubricating oil. S142. Place sleepers on the socket and spigot ends of the pipeline, and adjust the sleepers so that the socket and spigot of the pipeline are on the same horizontal plane, and leave a gap of 2 - 3 cm between the pipelines. S143. Measure the maximum depth of the socket, record it, make corresponding marks on the spigot, fix the chain block in the collar of the connecting pipe, and manually pull the chain block until the socket and spigot are fully butted in place; S144. Clean the outer wall of the pipe, evenly apply 1 - 3 layers of polyvinyl chloride binder, immediately and evenly sprinkle dry medium - coarse sand, and air dry for 20 - 35 minutes; S145. Pour slightly expanding concrete into the gap between the inspection well opening and the outer wall of the pipe to tightly connect the inspection well and the pipe through the slightly expanding concrete; Step Two: Determine the test water head of the inspection well and install the water - tightness test device 2 at the inspection well; Among them, determine the test water head according to the comparison result between the design water head and the inner wall of the top of the pipe and the standard height of the upstream inspection wellhead. Fix the water - tightness test device 2 above the inspection wellhead through three expansion seats 30 and level the water - tightness test device 2; Step Three: Before the water - tightness test, use the pipeline pre - detection device 1 to pre - detect the pipeline for water leakage, and install multiple leakage detection components 31 at the pipeline joints and the pipe well interfaces respectively; Step Four: Inject water into the pipeline to be tested and soak it for 24 hours; Step Five: Start timing detection through the terminal. When the detection time reaches 30 - 50 minutes, stop water replenishment and stop timing. Read the water replenishment volume through the terminal, which is the water seepage volume of the pipeline to be tested during this time period. The steps are as follows: S51. After soaking the pipeline to be tested for 24 hours, connect one end of the connecting pipe 28 to the water source, start debugging the equipment, and drain the air in the water replenishing pipe 24; S52. Adjust the depth of the liquid level measuring pipe 23 extending into the inspection well so that the probe of the liquid level sensor 35 is at the same horizontal plane as the test water head. At this time, power on the liquid level controller 37, and this liquid level value is the pre - set liquid level value; S53. When the test water head reaches the specified water head, start the equipment to replenish water. When the water surface first reaches the pre - set liquid level value of the test water head, start timing and simultaneously zero the reading of the flow meter 26; S54. At this time, the equipment will automatically replenish water according to the pipeline water seepage situation to keep the test water head constant; S55. When the specified test time is reached, read the corresponding water replenishment volume and the water - tightness test result through the test terminal; Step Six: Carry out drainage work after inspection and acceptance; Step Seven: Complete the pipeline backfilling work.

[0025] In this embodiment, after the pipeline to be tested is filled with water and soaked for 24 hours, the timing detection is started through the terminal. One end of the connecting pipe 28 is connected to the water source, and the equipment is started for debugging. The air in the water supply pipe 24 is drained completely. The depth of the liquid level measuring pipe 23 extending into the inspection well is adjusted so that the probe of the liquid level sensor 35 is on the same horizontal plane as the test water head. At this time, the liquid level controller 37 is powered on, and this liquid level value is the pre-set liquid level value. When the test water head reaches the specified water head, the equipment is started to supply water. When the water surface first reaches the pre-set liquid level value of the test water head, the timing is started, and at the same time, the reading of the flow meter 26 is cleared. At this time, the equipment will automatically supply water according to the pipeline seepage situation to keep the test water head constant (when the liquid level sensor 35 detects a decrease in the liquid level, this signal is transmitted to the liquid level controller 37, and the liquid level controller 37 controls the opening of the water pump 27. The water pump 27 transports clear water into the inspection well through the water supply pipe 24. When the liquid level in the inspection well reaches the pre-set liquid level value, the liquid level controller 37 controls the water pump 27 to close). During the whole detection process, the flow meter 26 monitors the water supply volume passing through the water supply pipe 24 in real time and transmits the water supply volume information to the terminal. When the specified test time is reached, the corresponding water supply volume and the result of the water tightness test can be read out through the test terminal. If the seepage volume of the pipeline within 30 minutes is less than the allowable seepage volume, it is qualified. Finally, after inspection and acceptance, the drainage work is carried out to complete the pipeline backfilling work; by setting the water tightness test device 2, this device has the advantages of high efficiency, accurate measurement, simple operation, convenient movement, etc., improves the efficiency of the pipeline water tightness test, realizes the full-process automatic detection of the municipal drainage pipeline water tightness test. At the same time, the liquid level sensor 35, the liquid level controller 37, the water pump 27 and the flow meter 26 are used to control the constancy of the test water head, improve the accuracy of the water tightness test, reduce the influence of human factors, and avoid the influence of the experience and judgment criteria of the test personnel on the results. On the premise of ensuring that the accuracy meets the requirements, both the test efficiency and the accuracy are significantly improved.

[0026] The working principle of the present invention: Before using this device for the water tightness test, first, the preparatory work and plugging work are done well before the water tightness test to improve the sealing effect between the pipeline and the pipeline, and between the pipeline and the inspection well, achieve the purpose of preventing leakage, effectively improve the passing rate of the water tightness test, can better verify the construction quality, guarantee the construction quality, and avoid a large amount of subsequent maintenance work; Next, based on the comparison result between the designed water head and the inner wall at the top of the pipeline and the standard height of the upstream inspection wellhead, the test water head is determined. The water tightness test device 2 is fixed above the inspection wellhead through three expansion seats 30, and the water tightness test device 2 is leveled. Before the water tightness test, the pipeline pre-detection device 1 is used to pre-detect the pipeline for water leakage, and the pipeline damage is excluded in advance before the water tightness test to ensure the accuracy of the pipeline water tightness test. Multiple leakage detection components 31 are respectively installed at the pipeline joints and the pipe well interfaces, so as to automatically detect the pipeline joints and the pipe well interfaces in real time, without the need for testers to perform multiple detections. The workload of the testers is reduced through the automated leakage detection technology. At the same time, when there is water seepage at the pipeline joints and the pipe well interfaces, the leakage detection component 31 can timely transmit the leakage signal to the terminal, facilitating the testers to perform repairs in a timely manner; After the pipeline to be tested is filled with water and soaked for 24 hours, one end of the connecting pipe 28 is connected to the water source, and the equipment is started for debugging. The air in the water supply pipe 24 is exhausted, and the depth of the liquid level measuring pipe 23 extending into the inspection well is adjusted so that the probe of the liquid level sensor 35 is at the same horizontal plane as the test water head. At this time, the liquid level controller 37 is powered on, and this liquid level value is the pre-set liquid level value. When the test water head reaches the specified water head, the equipment is started to supply water. When the water surface first reaches the pre-set liquid level value of the test water head, timing starts, and at the same time, the reading of the flow meter 26 is cleared. At this time, the equipment will automatically supply water according to the water seepage situation of the pipeline to keep the test water head constant. During the whole detection process, the flow meter 26 monitors the water supply volume passing through the water supply pipe 24 in real time and transmits the water supply volume information to the terminal. When the specified test time is reached, the corresponding water supply volume and the water tightness test result can be read out through the test terminal. If the water seepage volume of the pipeline within 30 minutes is less than the allowable water seepage volume, it is qualified. Finally, after inspection and acceptance, the drainage work is carried out, and the pipeline backfilling work is completed, improving the efficiency of the pipeline water tightness test, realizing the full-process automated detection of the municipal drainage pipeline water tightness test. At the same time, the liquid level sensor 35, the liquid level controller 37, the water pump 27 and the flow meter 26 are used to control the constancy of the test water head, improving the accuracy of the water tightness test and reducing the influence of human factors.

[0027] Each part of the present invention can be implemented by hardware, software, firmware or their combination. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one of the following technologies known in the art or their combination can be used: discrete logic circuits with logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits with suitable combinational logic gate circuits, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A digital device for rapid detection of the water tightness test of water supply and drainage pipelines, characterized in that, It includes a pipeline pre-detection device (1) and a water tightness test device (2). The water tightness test device (2) includes a fixing frame (21), a liquid level measuring pipe (23), a water supply pipe (24), a water pump (27), a connecting pipe (28), a placement frame (29), a telescopic seat (30), a mounting plate (32), a collection box (33), a power control component (36) and a liquid level controller (37). A liquid level sensor (35) is fixedly installed inside the liquid level measuring pipe (23). A flow meter (26) is fixedly installed at the top of the water supply pipe (24). One end of the water pump (27) is fixedly installed with one end of the water supply pipe (24), and the other end of the water pump (27) is fixedly communicated with one end of the connecting pipe (28). The liquid level controller (37) is electrically connected to the liquid level sensor (35). A plurality of leakage detection components (31) are arranged inside the collection box (33), and the bottom of the pipeline pre-detection device (1) is movably installed on the inner wall of the placement frame (29). The pipeline pre-detection device (1) includes a crawling robot (11) and a leakage detector (12). The top of the crawling robot (11) is fixedly installed with the bottom of the leakage detector (12), and a leakage induction rope (15) is arranged at the bottom of the crawling robot (11). Driving wheels (14) are symmetrically and rotatably installed at both ends of the bottom of the crawling robot (11).

2. The digital device for rapid detection of the water tightness test of water supply and drainage pipes according to claim 1, characterized in that, The leakage induction rope (15) is electrically connected to the leakage detector (12). The power control component (36) is electrically connected to the liquid level controller (37). A plurality of auxiliary support rods (13) are symmetrically and rotatably installed at both ends of the crawling robot (11). Two side plates (25) are symmetrically welded at both ends of the top of the fixing frame (21). Two convex plates (34) are symmetrically and fixedly installed on the outer wall of the liquid level measuring pipe (23). The liquid level measuring pipe (23) is clamped to the inner wall of the side plate (25) through the convex plates (34) at both ends thereof.

3. The digital device for rapid detection of the water tightness test of water supply and drainage pipes according to claim 1, characterized in that, Three support rods (22) are inserted in an annular array on the outer edge of the fixing frame (21), and one end of the support rod (22) is welded to the top of the telescopic seat (30). The outer edge of the fixing frame (21) is fixedly installed with one end of the mounting plate (32). The bottoms of the placement frame (29) and the collection box (33) are both fixedly installed on the top of the mounting plate (32).

4. A rapid detection digital device for the water tightness test of water supply and drainage pipes according to claim 1, characterized in that, It further includes a pipeline pre-detection module (3), a robot control module (4), a warning module (5), a power control module (6), a water pump control module (7), a liquid level control module (8), a liquid level sensing module (9), a flow control module (10), a leakage detection module (16) and a water tightness test terminal (17): The pipeline pre-detection module (3) is used to control the leakage detector (12). Before the water tightness test of the pipeline to be tested, pre-leakage detection of the pipeline to be tested is realized through the leakage detector (12) and the leakage induction rope (15). When it is detected that there is a leakage in the pipeline, the leakage signal is timely transmitted to the water tightness test terminal (17); The robot control module (4) can control the start and stop of the crawling robot (11), enabling the crawling robot (11) to move on the pipeline to be tested for pre-leakage detection; The warning module (5) is used to receive the leakage signals from the leakage detector (12) and the leakage detection module (16), and send out prompt information through the water-blocking test terminal (17) to prompt the test personnel in a timely manner; The power supply control module (6) is used to control the power-on situation of the liquid level control module (8); The water pump control module (7) is used to receive the water replenishment signal from the liquid level control module (8), control the water pump (27) to start, and replenish water to the inspection well through the water replenishing pipe (24); The liquid level control module (8) is used to control the water pump control module (7) to start for water replenishment according to the pre-set liquid level value of the water-blocking test terminal (17) and the actual liquid level value feedback by the liquid level control module (8), so as to ensure the constancy of the test water head liquid level value of the inspection well; The liquid level sensing module (9) is used to detect the actual liquid level value of the test water head of the inspection well in real time, and feedback the actual liquid level value signal to the liquid level control module (8) in real time; The flow rate control module (10) records the water replenishment amount of the water replenishing pipe (24) through the flow meter (26), and feeds back the water replenishment amount to the water-blocking test terminal (17) in real time; The leakage detection module (16) is used to control the leakage detection assembly (31). During the water-blocking test of the pipeline to be tested, the pipeline to be tested is detected for leakage through the leakage detection assembly (31). When a leakage situation is detected at the pipeline connection, the leakage signal is transmitted to the water-blocking test terminal (17) in a timely manner; The water-blocking test terminal (17) is signal-connected to the pipeline pre-detection module (3), the warning module (5), the liquid level control module (8), the flow rate control module (10), and the leakage detection module (16) through the terminal device, so as to realize the leakage monitoring, automatic water replenishment, water replenishment amount recording, and automatic calculation of the water-blocking test result of the pipeline to be tested.

5. A test method for rapid detection of water tightness test of water supply and drainage pipelines, characterized in that, Using a rapid detection digital device for water-blocking test of water supply and drainage pipelines according to any one of claims 1-4, comprising the following steps: S1. Prepare and plug the pipeline before the water-blocking test; S2. Determine the test water head of the inspection well, and install the water-blocking test device (2) at the inspection well; S3. Before the water-blocking test, use the pipeline pre-detection device (1) to detect the pipeline for pre-leakage, and install multiple leakage detection assemblies (31) at the pipeline connections and the pipe well interfaces respectively; S4. Inject water into the pipeline to be tested and soak it for 24 hours; S5. Start timing detection through the terminal. When the detection time reaches 30-50 minutes, stop water replenishment and stop timing. Read the water replenishment amount through the terminal, which is the water seepage amount of the pipeline to be tested during this period; S6. Carry out drainage work after inspection and acceptance; S7. Complete the pipeline backfilling work.

6. The test method for rapid detection of the water tightness test of water supply and drainage pipes according to claim 5, characterized in that, In step S1, it includes the following steps: S11. After the concrete of the inspection well meets the design requirements and reaches 100% of the design strength, test whether the water seepage amount of the sewage well section meets the design requirements and technical standards to ensure that the sewage does not leak; S12. Clean the scum in the inspection well before water injection; S13. Seal the holes reserved in the test well section and both ends at the upstream and downstream of the pipeline to be tested by means of sealing and blocking measures. The sprinkler truck stops at the upstream trench side of the well section, and at the same time, strictly check the irrigation and drainage gates to prevent leakage; S14. Seal the connection between pipelines and the connection between pipelines and inspection well bodies.

7. The test method for rapid detection of the water tightness test of water supply and drainage pipelines according to claim 6, characterized in that, In step S14, it includes the following steps: S141. Before the butt joint of pipelines, check the quality of the socket and spigot of the pipeline. After confirming no damage, put the rubber ring into the first ring groove of the spigot, and after confirming that it is firmly fixed and not distorted, apply a uniform layer of lubricating oil; S142. Pad sleepers at the socket and spigot ends of the pipeline, and adjust the sleepers to make the socket and spigot of the pipeline on the same horizontal plane, and leave a gap of 2 - 3 cm between pipelines; S143. Measure the maximum depth of the socket, record it, and make corresponding marks on the spigot. Fix the chain block in the collar of the connecting pipeline, and manually pull the chain block until the socket and spigot are completely butted in place; S144. Clean the outer wall of the pipeline, evenly apply 1 - 3 layers of polyvinyl chloride binder, immediately and evenly sprinkle dry medium - coarse sand, and air dry for 20 - 35 min; S145. Pour slightly expanded concrete into the gap between the inspection well hole and the outer wall of the pipeline to make the inspection well and the pipeline tightly connected through slightly expanded concrete.

8. The test method for rapid detection of the water tightness test of water supply and drainage pipelines according to claim 5, characterized in that, In step S2, determine the test water head according to the comparison result between the design water head and the inner wall of the top of the pipeline and the standard height of the upstream inspection wellhead. Fix the water - tight test device (2) above the inspection wellhead through three expansion seats (30), and level the water - tight test device (2).

9. The test method for rapid detection of water tightness test of water supply and drainage pipelines according to claim 5, characterized in that, In step S5, it includes the following steps: S51. After soaking the pipeline to be tested for 24 h, connect one end of the connecting pipe (28) to the water source, start debugging the equipment, and drain the air in the water supply pipe (24); S52. Adjust the depth of the liquid level measuring pipe (23) extending into the inspection well to make the probe of the liquid level sensor (35) at the same horizontal plane as the test water head. At this time, power on the liquid level controller (37), and this liquid level value is the pre - set liquid level value; S53. When the test water head reaches the specified water head, start the equipment to supply water. When the water surface first reaches the pre - set liquid level value of the test water head, start timing, and at the same time, zero the reading of the flowmeter (26); S54. At this time, the equipment will automatically supply water according to the seepage situation of the pipeline to keep the test water head constant; S55. When the specified test time is reached, read the corresponding water supply volume and the result of the water - tight test through the test terminal.

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