Pipeline clamp connector testing device under combined load effect

Abstract

The invention relates to the technical field of hoop connector testing, and discloses a pipeline hoop connector testing device under a combined load effect, which solves the problem of poor testing accuracy, and comprises a ground, a bearing frame and a right positioning block are arranged at the top of the ground, and a hydraulic rod is arranged at the bottom of the right positioning block. Two positioning pipes are arranged on the inner side of the bearing frame and the inner side of the right positioning block, a clamping main disc and a clamping auxiliary disc are arranged in each positioning pipe, a connecting pipe is arranged in each positioning pipe, a hoop type connector is arranged between the two connecting pipes, a sealing cabin is arranged in each connecting pipe, and a clamping groove is formed in the sealing cabin. Measuring plates are arranged at the front end and the rear end of the clamp type connector; the strain force borne by the clamp type connector is measured through the strain gauges, the deformation condition of the clamp type connector can be monitored through the observation camera, the distance between the bearing frame and the right positioning block can be monitored through the top displacement sensor, and the displacement condition of the outer end of the connecting pipe is monitored through the clamping displacement sensor.

Description

Technical Field

[0001] The present invention belongs to the technical field of testing of clamp connectors, and specifically relates to a testing device for a pipeline clamp connector under combined loads. Background Art

[0002] An underwater pipeline clamp connector is a key device for the installation of underwater pipeline clamps, and its performance directly affects the safe development of oil and gas fields. Under actual working conditions, the underwater pipeline clamp connector is subjected to complex loads, including pressure, axial force, bending moment, and torque. Therefore, it is crucial to conduct a comprehensive performance test on the underwater pipeline clamp connector.

[0003] However, the existing testing devices for underwater pipeline clamp connectors can only simulate single or simple load conditions and cannot truly reflect the complex loads under actual working conditions. At the same time, most of the existing testing methods are carried out manually, resulting in low testing accuracy and low efficiency. For this reason, the present invention proposes a testing device for a pipeline clamp connector under combined loads. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a testing device for a pipeline clamp connector under combined loads, effectively solving the problems raised in the above background.

[0005] To achieve the above object, the present invention provides the following technical solution: A testing device for a pipeline clamp connector under combined loads, including the ground. Two support frames are fixed on the top of the ground. A bearing frame is provided on the top of the two support frames. A right positioning block is provided at the right end of the bearing frame. Two hydraulic rods are provided at the bottom of the right positioning block. Two load sensors are fixed at the lower end of each hydraulic rod. Two positioning tubes are provided inside the bearing frame and the right positioning block. A number of clamping main rods are provided outside each positioning tube. Two clamping main discs are rotatably connected to the inside of each clamping main rod through a fixing plate. A clamping sub-disc is provided at the outer end of each clamping main disc. A connecting tube is provided inside each positioning tube. The two connecting tubes are tightly connected through a clamp connector. A number of strain gauges are fixed outside the clamp connector. A sealing disc is provided inside each connecting tube. A camera inside the tube is fixed to the inside of the left sealing disc. A water pumping hose is provided inside the right sealing disc. A water pressure sensor is provided at the top of the water pumping hose and is fixedly connected to the sealing disc. A set of adapter plates are provided on both the inside and outside of each sealing disc. A sealing chamber is fixed between the two sets of adapter plates at each end. Support rods are provided at both the front and rear ends of the clamp connector. Two measuring plates are provided inside each support rod. A deformation displacement sensor is fixed to the left side of each measuring plate at the right end. A nitrogen tank is fixed on the top of the ground. A water tank is provided at the right end of the nitrogen tank and is fixed to the ground.

[0006] Preferably, a controller is fixed on the top of the ground, a power supply is fixed on the right end of the controller, input pumps are fixed inside both the nitrogen tank and the water tank, an input main valve is fixed at the rear end of each input pump, an input hose is fixed at the rear end of each input main valve, an output main valve is arranged inside each input pump and is fixedly connected to the nitrogen tank and the water tank at its front end, and an output hose is fixed at the rear end of each output main valve.

[0007] Preferably, an input pipe is fixed at the rear end of each input hose, an output pipe is fixed at the rear end of each output hose, each input pipe and each output pipe penetrate through the sealing disc at one end thereof, an input valve is arranged inside each sealing disc and is fixedly connected to the input pipe, an output valve is arranged in front of each input valve and is fixedly connected to the output pipe, and the right-end output pipe is fixedly connected to the water pumping hose inside it.

[0008] Preferably, a number of adapter rods are fixed on both the inner and outer sides of each sealing disc, each adapter rod is fixedly connected to the adapter plate at one end thereof, a sealing valve is fixed at the bottom of each input pipe, a sealing pipe is fixed at the bottom of each sealing valve, a reflux valve is fixed at the bottom of each output pipe, a reflux pipe is fixed at the bottom of each reflux valve, each sealing pipe and each reflux pipe communicate with the sealing chamber outside it, and each sealing chamber is in close contact with the connecting pipe outside it.

[0009] Preferably, each connecting pipe is in close contact with the clamping main disc inside it and the clamping sub-disc outside it, two clamping main motors are fixed at the outer end of each clamping main rod, each clamping main motor is rotationally connected to the clamping main disc inside it, a moving rail is arranged at the telescopic end of each clamping main rod, a moving plate is slidably connected inside each moving rail, two clamping sub-motors are fixed at the outer side of each moving plate, and each clamping sub-motor is rotationally connected to the clamping sub-disc at one end thereof.

[0010] Preferably, two clamping cameras are further fixed inside each clamping main rod, the telescopic end of each moving plate is fixedly connected to the clamping sub-rod inside it, the fixed end of each clamping sub-rod is fixedly connected to the telescopic end of the clamping main rod through a fixing plate, and a clamping displacement sensor is further fixed at the fixed end inside each clamping main rod.

[0011] Preferably, each fixed end of the clamping main rod is fixedly connected to the positioning tube outside it. A left positioning block is fixed on the left side of the left positioning tube. The left positioning block and the bearing frame at its left end are tightly connected by bolts. The bottom of the bearing frame is tightly connected to the support frame by bolts. The right side of the right positioning tube at the right end is fixedly connected to the right positioning block at its right end through a flange. Top displacement sensors are fixed on both the bearing frame and the top of the right positioning block.

[0012] Preferably, two upper hinge joints are fixed at the bottom of the right positioning block. A support disk is hinged inside each upper hinge joint. Each support disk is fixedly connected to the hydraulic rod at its bottom. The bottom of each hydraulic rod is hinged to a lower hinge joint. A connecting plate is fixed at the bottom of each load sensor. Each connecting plate is in close contact with the support frame at its bottom. The two connecting plates are fixedly connected by a positioning rod. A positioning strip is tightly connected to the bottom of each connecting plate by bolts. The top of each positioning strip is in close contact with the support frame.

[0013] Preferably, a moving rod is fixed at the left end of the positioning rod. A connecting strip is fixed at the left end of the moving rod. Locking plates are fixed at both ends of the front of the connecting strip. The locking plates are tightly connected to the support frame by bolts. Each locking plate is fixedly connected to the support rod at its top. A reversing motor is fixed at the upper left side of each support rod. A reversing block is rotatably connected to the right end of each reversing motor. A proximity rod is fixed inside each reversing block. A positioning plate is fixed inside each proximity rod.

[0014] Preferably, an observation camera is fixed on the top of each positioning plate. Two measuring shafts are slidably connected to the left and right ends of each positioning plate. Each measuring shaft is fixedly connected to the measuring plate at one end of it. A measuring spring is fixed inside each measuring plate. The inner side of each measuring spring is fixedly connected to the positioning plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: When the two hydraulic rods of the present invention expand and contract simultaneously, they can drive the right positioning tube to rise and fall, thus completing the bending moment test work. When one hydraulic rod extends and the other hydraulic rod contracts, the torque test can be completed, thereby improving the test efficiency and at the same time improving the test accuracy, thus ensuring the test effect. At the same time, the load sensor can monitor the load received by the hydraulic rod, thus further ensuring the test accuracy. At the same time, the moving rod can drive the positioning rod to move, thus facilitating the detection of the telescopic condition of the clamp connector, thereby realizing the composite load test work. At the same time, different situations can be simulated, thus expanding the test scope. In the present invention, the main clamping rod expands and contracts, thereby driving the movement of the fixing plate inside the main clamping rod, and further driving the movement of the main clamping disc. At the same time, the secondary clamping rod expands and contracts to drive the moving plate to move along the moving track. Furthermore, the main clamping motor drives the main clamping disc to rotate, and the secondary clamping motor drives the secondary clamping disc to rotate. Thus, the connecting pipe can be clamped through the cooperation of the secondary clamping disc and the main clamping disc, ensuring the stability of the connecting pipe, and further ensuring the accuracy of measurement; In the present invention, strain gauges are used to measure the strain force applied to the clamp connector. At the same time, the deformation of the clamp connector can be monitored through the observation camera. Two top displacement sensors cooperate to monitor the distance between the bearing frame and the right positioning block. Furthermore, the displacement of the outer end of the connecting pipe is monitored through the clamping displacement sensor, and the deformation of the clamp connector is monitored through the deformation displacement sensor. Thus, the displacement of the inner end of each connecting pipe can be calculated, and the clamping condition of the clamp connector can be tested, and the force limit of the clamp connector can be tested, ensuring the accuracy of the test; In the present invention, the adapter rod expands and contracts, thereby driving the movement of the adapter plate, ensuring the stability of the sealed cabin. The sealed cabin can ensure the sealing of the connecting pipe, thus ensuring the accuracy of the test. The right-end input pump and the right-end input main valve cooperate to transport the clear water inside the water tank to the input pipe at its rear end through the right-end input hose, and then to the inside of the connecting pipe. Furthermore, the left-end input pump and the left-end input main valve cooperate to transport the nitrogen gas inside the nitrogen tank to the input pipe at its rear end through the left-end input hose, thereby transporting the nitrogen gas to the inside of the connecting pipe, changing the water pressure inside the clamp connector, enabling the clamp connector to simulate the underwater environment, and ensuring the accuracy of the test; In the present invention, the support rod expands and contracts, driving the lifting of the reversing block. Furthermore, the reversing motor drives the rotation of the reversing block. At the same time, the proximity rod expands and contracts to drive the movement of the positioning plate, adapting to clamp connectors of different shapes and sizes. Furthermore, the measuring plate is in close contact with the clamp connector to facilitate the deformation displacement sensor to test the deformation of the clamp connector. At the same time, the deformation and sealing conditions of the clamp connector can be monitored through the observation camera of the device, ensuring the accuracy of the test. Description of the Drawings

[0016] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0017] In the drawings: Figure 1 is the overall schematic diagram of the present invention; Figure 2 is the overall top view schematic diagram of the present invention; Figure 3Schematic diagram of the top of the support frame of the present invention; Figure 4 Schematic diagram of the right side of the whole of the present invention; Figure 5 Schematic diagram of the inner side of the positioning tube of the present invention; Figure 6 Schematic diagram of the rear end of the nitrogen tank of the present invention; Figure 7 Schematic diagram of the left side of the right positioning block of the present invention; Figure 8 Schematic diagram of the rear part of the support rod of the present invention; Figure 9 Schematic diagram of the inside of the positioning tube of the present invention; Figure 10 Schematic diagram of the inside of the connecting tube of the present invention; Figure 11 Schematic diagram of the inside of the left connecting tube of the present invention; Figure 12 Schematic diagram of the inside of the right connecting tube of the present invention; Figure 13 Schematic diagram of the inner side of the sealing disc of the present invention; Figure 14 Schematic diagram of the clamping sub-disc and the clamping main disc of the present invention; Figure 15 Schematic diagram of the inner side of the clamping main rod of the present invention; Figure 16 Schematic diagram of the inside of the sealing cabin of the present invention.

[0018] In the figure: 1 - ground; 2 - nitrogen tank; 3 - positioning plate; 4 - bearing frame; 5 - support rod; 6 - positioning tube; 7 - clamp connector; 8 - hydraulic rod; 9 - sealing disc; 101 - controller; 102 - power supply; 103 - support frame; 201 - water tank; 202 - input hose; 203 - output hose; 204 - input pump; 205 - input main valve; 206 - output main valve; 301 - measuring plate; 302 - observation camera; 303 - measuring shaft; 304 - measuring spring; 305 - deformation displacement sensor; 401 - top displacement sensor; 402 - left positioning block; 403 - support block; 404 - right positioning block; 405 - flange; 501 - locking plate; 502 - reversing block; 503 - reversing motor; 504 - close - up rod; 505 - connecting bar; 506 - moving rod; 601 - clamping main rod; 602 - clamping sub - rod; 603 - clamping sub - disc; 604 - clamping main disc; 605 - clamping camera; 606 - clamping sub - motor; 607 - clamping main motor; 608 - clamping displacement sensor; 609 - moving plate; 610 - moving track; 701 - connecting pipe; 702 - strain gauge; 801 - support disc; 802 - upper hinge joint; 803 - load sensor; 804 - lower hinge joint; 805 - connecting plate; 806 - positioning rod; 807 - positioning strip; 901 - in - pipe camera; 902 - pumping hose; 903 - water pressure sensor; 904 - adapter rod; 905 - adapter plate; 906 - sealing cabin; 907 - input pipe; 908 - output pipe; 909 - input valve; 910 - output valve; 911 - sealing pipe; 912 - return pipe; 913 - sealing valve; 914 - return valve. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0020] Embodiment 1, consists of Figures 1 - 3 , Figure 5 , Figures 9 - 10 , Figure 13Provided is a test device for a pipe clamp connector under a combined load according to the present invention, including a ground 1 which is used to support the entire device. Two support frames 103 are fixed on the top of the ground 1. The support frames 103 are made of alloy materials and are used to position the bearing frame 4. A bearing frame 4 is provided on the top of the two support frames 103. The bearing frame 4 is made of alloy materials and is used to position the left positioning block 402. A right positioning block 404 is provided at the right end of the bearing frame 4. The right positioning block 404 is made of alloy materials and is used to position the flange plate 405. Two hydraulic rods 8 are provided at the bottom of the right positioning block 404. When the two hydraulic rods 8 extend and retract simultaneously, they can drive the positioning pipe 6 at the right end to rise and fall, thereby completing the bending moment test work. When one hydraulic rod 8 extends and the other hydraulic rod 8 contracts, the torque test can be completed, thereby improving the test efficiency and at the same time improving the test accuracy, thus ensuring the test effect. Two load sensors 803 are fixed at the lower end of each hydraulic rod 8. The load sensors 803 are used to monitor the load received by the hydraulic rod 8, thereby further ensuring the test accuracy. Two positioning pipes 6 are provided inside the bearing frame 4 and the right positioning block 404. The positioning pipes 6 are made of alloy materials and are used to position the clamping main rod 601. A number of clamping main rods 601 are provided outside each positioning pipe 6. The clamping main rods 601 can be telescopic, thereby driving the movement of the fixing plate inside the clamping main rod 601, and then driving the movement of the clamping main disc 604. Two clamping main discs 604 are rotatably connected to the inside of each clamping main rod 601 through a fixing plate. A clamping sub-disc 603 is provided at the outer end of each clamping main disc 604. A number of teeth are fixed inside each clamping sub-disc 603. A number of teeth are fixed outside each clamping main disc 604. The clamping sub-disc 603 and the clamping main disc 604 cooperate to clamp the connecting pipe 701, thereby ensuring the stability of the connecting pipe 701 and thus ensuring the measurement accuracy. A connecting pipe 701 is provided inside each positioning pipe 6. The connecting pipe 701 is made of alloy materials and is convenient for measuring the clamp connector 7. The two connecting pipes 701 are tightly connected by the clamp connector 7. A number of strain gauges 702 are fixed outside the clamp connector 7. The strain gauges 702 are used to measure the strain force received by the clamp connector 7. At the same time, the deformation condition of the clamp connector 7 can be monitored through the observation camera 302. A sealing disc 9 is provided inside each connecting pipe 701. The sealing disc 9 is made of alloy materials and is used to position the sealing chamber 906. A pipe-internal camera 901 is fixed inside the left sealing disc 9. The pipe-internal camera 901 is used to monitor the internal condition of the connecting pipe 701. A pumping hose 902 is provided inside the right sealing disc 9.The pumping hose 902 facilitates the extraction of the clear water inside the connecting pipe 701. A water pressure sensor 903 is provided at the top of the pumping hose 902 and is fixedly connected to the sealing disc 9. The water pressure sensor 903 is used to monitor the water pressure inside the connecting pipe 701, thereby measuring the water pressure inside the clamp connector 7, so as to ensure the accuracy of the test. A set of adapter plates 905 are provided on both the inner and outer sides of each sealing disc 9. The adapter plates 905 are made of alloy materials. The adapter plates 905 are used to position the sealing chamber 906. A sealing chamber 906 is fixed between the two sets of adapter plates 905 at each end. The sealing chamber 906 is made of rubber material. The sealing chamber 906 can ensure the sealing performance of the connecting pipe 701, thereby ensuring the accuracy of the test. Support rods 5 are provided at both the front and rear ends of the clamp connector 7. The support rods 5 are telescopic, so as to drive the reversing block 502 to lift and lower. Two measuring plates 301 are provided inside each support rod 5. The measuring plates 301 are made of alloy materials. A deformation displacement sensor 305 is fixed on the left side of each measuring plate 301 at the right end. The measuring plate 301 is in close contact with the clamp connector 7 to facilitate the deformation displacement sensor 305 to measure the deformation of the clamp connector 7. A nitrogen tank 2 is fixedly connected to the top of the ground 1. The nitrogen tank 2 is used to store nitrogen. A water tank 201 is provided at the right end of the nitrogen tank 2 and is fixedly connected to the ground 1. The water tank 201 is used to store the required clear water.,

[0021] Embodiment 2, on the basis of Embodiment 1, by Figure 6 、 Figure 14 、 Figure 16Given that a controller 101 is fixedly installed on the top of the ground 1. The controller 101 is used to control the entire device. A power supply 102 is fixedly installed on the right end of the controller 101. The power supply 102 provides the electrical energy required for the entire device. Input pumps 204 are fixedly installed inside both the nitrogen tank 2 and the water tank 201. An input main valve 205 is fixedly installed at the rear end of each input pump 204. An input hose 202 is fixedly installed at the rear end of each input main valve 205. The input hose 202 is telescopic. The left input pump 204 and the left input main valve 205 cooperate to convey the nitrogen inside the nitrogen tank 2 to the input pipe 907 at its rear end through the left input hose 202. The right input pump 204 and the right input main valve 205 cooperate to convey the clear water inside the water tank 201 to the input pipe 907 at its rear end through the right input hose 202. An output main valve 206 is installed inside each input pump 204 and is fixedly connected to the nitrogen tank 2 and the water tank 201 at its front end. The output main valve 206 facilitates the discharge of nitrogen and clear water. An output hose 203 is fixedly installed at the rear end of each output main valve 206. The output hose 203 is telescopic, thus facilitating the movement of the sealing disc 9. An input pipe 907 is fixedly installed at the rear end of each input hose 202. The input pipe 907 facilitates the conveyance of nitrogen and clear water to the connecting pipe 701. An output pipe 908 is fixedly installed at the rear end of each output hose 203. The output pipe 908 is used to extract the nitrogen inside the connecting pipe 701, and the clear water inside the connecting pipe 701 can also be extracted through the water extraction hose 902. Each input pipe 907 and each output pipe 908 penetrate through the sealing disc 9 at one end thereof. An input valve 909 is installed inside each sealing disc 9 and is fixedly connected to the input pipe 907. The input valve 909 is used to control the entry of nitrogen and clear water. An output valve 910 is installed in front of each input valve 909 and is fixedly connected to the output pipe 908. The output valve 910 is used to control the discharge of nitrogen and clear water. The right output pipe 908 is fixedly connected to the water extraction hose 902 inside it. A number of matching rods 904 are fixedly installed on both the inner and outer sides of each sealing disc 9. The matching rods 904 are telescopic, thus capable of driving the matching plate 905 to move, thereby ensuring the stability of the sealing chamber 906. Each matching rod 904 is fixedly connected to the matching plate 905 at one end thereof. A sealing valve 913 is fixedly installed at the bottom of each input pipe 907. A sealing pipe 911 is fixedly installed at the bottom of each sealing valve 913. The sealing valve 913 and the sealing pipe 911 cooperate to control the entry of nitrogen and clear water into the sealing chamber 906, thereby ensuring the sealing performance of the connecting pipe 701. A return valve 914 is fixedly installed at the bottom of each output pipe 908. A return pipe 912 is fixedly installed at the bottom of each return valve 914. The return valve 914 and the return pipe 912 cooperate to discharge the nitrogen and clear water inside the sealing chamber 906.Each of the sealed tubes 911 and each of the reflux tubes 912 communicate with the sealed chamber 906 outside thereof, and each of the sealed chambers 906 is in close fit with the connecting tube 701 outside thereof; Before using this device, the staff sequentially place the two sealing discs 9 into the interior of the connecting pipe 701. Further, the staff fix the two connecting pipes 701 through the clamp connector 7. At this time, the staff paste a plurality of strain gauges 702 on the outside of the clamp connector 7. At this time, the controller 101 controls the adaptor rod 904 to extend, so that the adaptor plate 905 moves outward, so that the adaptor plate 905 is in close contact with the connecting pipe 701. At this time, the staff insert the connecting pipe 701 into the two positioning pipes 6. Further, the controller 101 fixes the connecting pipe 701 through the clamping sub-disc 603 and the clamping main disc 604. Further, the controller 101 controls the cooperation of the two input pumps 204 and the two input main valves 205 to work, so as to convey clear water to the right-end input pipe 907 through the right-end input hose 202. Further, the controller 101 controls the opening of the right-end sealing valve 913. At this time, the clear water is conveyed into the sealing chamber 906, so that the sealing chamber 906 deforms, so that the sealing chamber 906 is in close contact with the right-end connecting pipe 701, so as to ensure the sealing of the right-end connecting pipe 701. At the same time, the nitrogen in the nitrogen tank 2 is conveyed to the left-end input pipe 907 through the left-end input hose 202. At this time, the controller 101 controls the opening of the left-end sealing valve 913, so that nitrogen enters the left-end sealing chamber 906, so that the left-end sealing chamber 906 deforms, so that the left-end sealing chamber 906 is in close contact with the left-end connecting pipe 701, so as to ensure the sealing of the left-end connecting pipe 701. Further, the controller 101 controls the opening of the left-end input valve 909, so as to convey clear water into the connecting pipe 701. When the in-pipe camera 901 monitors that the connecting pipe 701 is filled with clear water, the controller 101 controls the clear water to stop entering the connecting pipe 701. At this time, the water pressure sensor 903 can monitor the water pressure inside the connecting pipe 701. Further, the controller 101 controls the opening of the left-end input valve 909. At this time, nitrogen enters the connecting pipe 701, so as to change the water pressure inside the connecting pipe 701. When the water pressure sensor 903 monitors that the water pressure in the connecting pipe 701 is the required simulated water pressure, the controller 101 controls the input valve 909 to close. When it is necessary to disassemble the entire device, the controller 101 controls the opening of the right-end output valve 910 and the right-end output main valve 206. At this time, the controller 101 continues to control nitrogen to enter the connecting pipe 701, so that the clear water flows back. Further, the controller 101 controls the opening of the return valve 914, so that a part of the nitrogen and clear water inside the sealing chamber 906 flows back, so as to facilitate the disassembly of the sealing disc 9.

[0022] Example 3, on the basis of Example 1, byFigures 11 - 12 , Figure 15 Given that each of the connecting pipes 701 is in close fit with the clamping main disc 604 inside it, and each of the connecting pipes 701 is in close fit with the clamping sub-disc 603 outside it. Two clamping main motors 607 are fixed at the outer ends of each of the clamping main rods 601. Each of the clamping main motors 607 is rotationally connected to the clamping main disc 604 inside it. The clamping main motor 607 can drive the clamping main disc 604 to rotate. A moving rail 610 is provided at the telescopic end of each of the clamping main rods 601. The moving rail 610 is used to position the moving plate 609. A moving plate 609 is slidably connected inside each of the moving rails 610. The moving plate 609 is used to position the clamping sub-disc 603. Two clamping sub-motors 606 are fixed on the outside of each of the moving plates 609. Each of the clamping sub-motors 606 is rotationally connected to the clamping sub-disc 603 at one end of it. The clamping sub-motor 606 can drive the clamping sub-disc 603 to rotate. Two clamping cameras 605 are also fixed inside each of the clamping main rods 601. The clamping cameras 605 are used to monitor the clamping conditions of the clamping sub-disc 603 and the clamping main disc 604, and at the same time can monitor the movement conditions of the connecting pipe 701. Each of the moving plates 609 is fixedly connected to the telescopic end of the clamping sub-rod 602 inside it. The fixed end of each of the clamping sub-rods 602 is fixedly connected to the telescopic end of the clamping main rod 601 through a fixing plate. A clamping displacement sensor 608 is also fixed at the fixed inner end of each of the clamping main rods 601. The clamping displacement sensor 608 is used to monitor the displacement conditions of the connecting pipe 701, so as to ensure the accuracy of measurement. The fixed end of each of the clamping main rods 601 is fixedly connected to the positioning pipe 6 outside it. A left positioning block 402 is fixed on the left side of the left positioning pipe 6. The left positioning block 402 is used to position the left positioning pipe 6. The left positioning block 402 is fixedly connected to the bearing frame 4 at its left end through bolts. The bottom of the bearing frame 4 is fixedly connected to the support frame 103 through bolts. The right side of the right positioning pipe 6 is fixedly connected to the right positioning block 404 at its right end through a flange 405. Top displacement sensors 401 are fixed on the tops of both the bearing frame 4 and the right positioning block 404. The two top displacement sensors 401 cooperate to monitor the distance between the bearing frame 4 and the right positioning block 404, and further monitor the displacement conditions of the outer ends of the connecting pipes 701 through the clamping displacement sensor 608. At the same time, the deformation conditions of the hoop connector 7 are monitored through the deformation displacement sensor 305, so as to calculate the displacement conditions of the inner ends of each of the connecting pipes 701, so as to test the clamping conditions of the hoop connector 7, so as to test the force limit of the hoop connector 7, so as to ensure the accuracy of the test; When using this device, the staff member fastens the support block 403 to the support frame 103 through bolts. At the same time, through the left positioning block 402 and the flange 405, the two positioning tubes 6 are fixed to the carrier frame 4 and the right positioning block 404. Further, the staff member inserts the two connecting tubes 701 into the positioning tubes 6. At this time, the controller 101 can monitor the position of the connecting tubes 701 through the connecting plate 805. Further, the controller 101 controls the contraction of the positioning tubes 6, thereby driving the clamping sub-disk 603 close to the inner wall of the connecting tubes 701. At this time, the controller 101 controls the cooperation of the clamping main motor 607 and the clamping main rod 601 to make the clamping main disk 604 close to the connecting tubes 701. Further, the controller 101 controls the telescopic movement of the clamping sub-rod 602 to drive the moving plate 609 to move, so that the clamping sub-disk 603 approaches the outer wall of the connecting tubes 701. Further, the controller 101 controls the cooperation of the clamping sub-motor 606 and the clamping sub-rod 602 to make the clamping sub-disk 603 close to the connecting tubes 701, so that the clamping sub-disk 603 and the clamping main disk 604 clamp the connecting tubes 701, thus ensuring the stability of the connecting tubes 701 and the stability during testing. Further, the displacement of the connecting tubes 701 can be monitored through the clamping displacement sensor 608.

[0023] Embodiment 4, on the basis of Embodiment 1, by Figure 4 、 Figures 7 - 8Given that, two upper hinge joints 802 are fixed to the bottom of the right positioning block 404. The upper hinge joints 802 are used to position the support disc 801. A support disc 801 is hinged inside each upper hinge joint 802. The support disc 801 is used to connect the hydraulic rod 8 and the upper hinge joint 802. Each support disc 801 is fixedly connected to the hydraulic rod 8 at its bottom. A lower hinge joint 804 is hinged to the bottom of each hydraulic rod 8. The lower hinge joint 804 is used to position the hydraulic rod 8. A connecting plate 805 is fixed to the bottom of each load sensor 803. The connecting plate 805 is made of an alloy material. The connecting plate 805 is used to position the lower hinge joint 804. Each connecting plate 805 is in close contact with the support frame 103 at its bottom. The two connecting plates 805 are fixedly connected by a positioning rod 806. The positioning rod 806 is made of an alloy material. The positioning rod 806 can ensure the stability when the two connecting plates 805 move. A positioning strip 807 is fixedly connected to the bottom of each connecting plate 805 by bolts. The positioning strip 807 is made of an alloy material. The positioning strip 807 can ensure the stability of the movement of the lower hinge joint 804. The top of each positioning strip 807 is in close contact with the support frame 103. A moving rod 506 is fixed to the left end of the positioning rod 806. The moving rod 506 is telescopic, so as to drive the positioning rod 806 to move. A connecting strip 505 is fixed to the left end of the moving rod 506. The connecting strip 505 is made of an alloy material. The connecting strip 505 is used to connect the two locking plates 501, so as to ensure the stability of the whole device. Locking plates 501 are fixed to both ends of the front end of the connecting strip 505. The locking plates 501 are made of an alloy material. The locking plates 501 are used to position the support rod 5. The locking plates 501 are fixedly connected to the support frame 103 by bolts. Each locking plate 501 is fixedly connected to the support rod 5 at its top. A reversing motor 503 is fixed to the left side of the upper end of each support rod 5. The reversing motor 503 can drive the reversing block 502 to rotate. A reversing block 502 is rotatably connected to the right end of each reversing motor 503. The reversing block 502 is used to position the approaching rod 504. An approaching rod 504 is fixed to the inner side of each reversing block 502. The approaching rod 504 is telescopic, so as to drive the positioning plate 3 to move. A positioning plate 3 is fixed to the inner side of each approaching rod 504. The positioning plate 3 is made of an alloy material. The positioning plate 3 is used to position the measuring shaft 303. An observation camera 302 is fixed to the top of each positioning plate 3. The observation camera 302 is used to monitor the deformation of the clamp connector 7. Two measuring shafts 303 are slidably connected to the left and right ends of each positioning plate 3. The measuring shafts 303 are made of an alloy material. The measuring shafts 303 are used to position the measuring plate 301. Each measuring shaft 303 is fixedly connected to the measuring plate 301 at one end of it.Inside each of the measurement plates 301, a measurement spring 304 is fixed. The inner side of each measurement spring 304 is fixedly connected to the positioning plate 3. The cooperation between the measurement spring 304 and the measurement shaft 303 can ensure that the measurement plate 301 is in close contact with the clamp connector 7. Before using this device, the staff can make the connecting plate 805 in close contact with the support frame 103 through the positioning strip 807 while preventing the connecting plate 805 from shaking, so as to ensure the accuracy of the test. When using this device, the staff fixes the locking plate 501 at the front and rear ends of the clamp connector 7. When the test starts, the controller 101 controls the telescopic movement of the support rod 5 to drive the lifting of the commutation block 502. Further, the controller 101 controls the commutation motor 503 to drive the rotation of the commutation block 502. At this time, the controller 101 controls the extension of the approaching rod 504 to drive the movement of the positioning plate 3. Further, the staff positions the two measurement plates 301 at both ends of the clamp connector 7, so as to ensure the accuracy of the test. At this time, the controller 101 controls the simultaneous telescopic movement of the two hydraulic rods 8, thereby driving the lifting of the right positioning block 404, so that the positioning tube 6 at the right end is lifted and lowered, so as to test the bending moment of the clamp connector 7. At this time, the strain gauge 702 transmits the strain force received by the clamp connector 7 to the controller 101. At the same time, the deformation condition and water leakage condition of the clamp connector 7 can be monitored through the observation camera 302. Further, the controller 101 can make the positioning tube 6 at the right end rotate by controlling the extension of one hydraulic rod 8 and the contraction of the other hydraulic rod 8, so as to test the torque of the clamp connector 7. Due to the action of the measurement shaft 303 and the measurement spring 304, when the strain gauge 702 deforms, the distance between the measurement plates 301 changes. At this time, the controller 101 can monitor the deformation amount of the clamp connector 7 through the deformation displacement sensor 305. Further, the controller 101 controls the extension of the moving rod 506 to drive the movement of the right positioning block 404. At this time, the controller 101 can test the displacement amount of the inner end of the connecting pipe 701 according to the data of the clamping displacement sensor 608, the top displacement sensor 401, and the deformation displacement sensor 305, so as to achieve the purpose of testing the clamping effect of the clamp connector 7.

[0024] The working process of the present invention is as follows: Before using the device, the staff sequentially places two of the sealing discs 9 into the inside of the connecting pipe 701. Further, the staff fixes the two connecting pipes 701 through the clamp connector 7. At this time, the staff pastes a plurality of strain gauges 702 on the outside of the clamp connector 7. Further, the staff tightens the support block 403 and the support frame 103 through bolts. At the same time, through the left positioning block 402 and the flange 405, the two positioning pipes 6 are fixed to the carrier frame 4 and the right positioning block 404. At this time, the staff can make the connecting plate 805 closely adhere to the support frame 103 through the positioning bar 807 while preventing the connecting plate 805 from shaking, thereby ensuring the accuracy of the test. At this time, the controller 101 controls the adapter rod 904 to extend, so that the adapter plate 905 moves outward, so that the adapter plate 905 closely adheres to the connecting pipe 701. Further, the controller 101 controls the cooperation of two input pumps 204 and two input master valves 205 to work, so as to convey clear water to the right input pipe 907 through the right input hose 202. Further, the controller 101 controls the opening of the right sealing valve 913. At this time, the clear water is conveyed into the sealing chamber 906, so that the sealing chamber 906 deforms, so that the sealing chamber 906 closely adheres to the right connecting pipe 701, thereby ensuring the sealing of the right connecting pipe 701. At the same time, the nitrogen in the nitrogen tank 2 is conveyed to the left input pipe 907 through the left input hose 202. At this time, the controller 101 controls the opening of the left sealing valve 913, so that nitrogen enters the left sealing chamber 906, so that the left sealing chamber 906 deforms, so that the left sealing chamber 906 closely adheres to the left connecting pipe 701, thereby ensuring the sealing of the left connecting pipe 701. Further, the controller 101 controls the opening of the left input valve 909, so as to convey clear water into the connecting pipe 701. When the in-pipe camera 901 monitors that the connecting pipe 701 is filled with clear water, the controller 101 controls the clear water to stop entering the connecting pipe 701. At this time, the water pressure sensor 903 can monitor the water pressure inside the connecting pipe 701. Further, the controller 101 controls the opening of the left input valve 909. At this time, nitrogen enters the connecting pipe 701, so as to change the water pressure inside the connecting pipe 701. When the water pressure sensor 903 monitors that the water pressure in the connecting pipe 701 is the required simulated water pressure, the controller 101 controls the input valve 909 to close. Further, the staff inserts the two connecting pipes 701 into the positioning pipes 6. At this time, the controller 101 can monitor the position of the connecting pipe 701 through the connecting plate 805. Further, the controller 101 controls the contraction of the positioning pipe 6,Thereby driving the clamping sub-disk 603 close to the inner wall of the connecting pipe 701. At this time, the controller 101 controls the cooperation of the clamping main motor 607 and the clamping main rod 601 to make the clamping main disk 604 close to the connecting pipe 701. Further, the controller 101 controls the telescopic movement of the clamping sub-rod 602 to drive the moving plate 609 to move, so that the clamping sub-disk 603 approaches the outer wall of the connecting pipe 701. Further, the controller 101 controls the cooperation of the clamping sub-motor 606 and the clamping sub-rod 602 to make the clamping sub-disk 603 close to the connecting pipe 701, so that the clamping sub-disk 603 and the clamping main disk 604 clamp the connecting pipe 701, thereby ensuring the stability of the connecting pipe 701 and the stability during testing. Further, the displacement of the connecting pipe 701 can be monitored by the clamping displacement sensor 608. The staff fixes the locking plate 501 at the front and rear ends of the clamp connector 7. When the test starts, the controller 101 controls the telescopic movement of the support rod 5 to drive the reversing block 502 to rise and fall. Further, the controller 101 controls the reversing motor 503 to drive the reversing block 502 to rotate. At this time, the controller 101 controls the extension of the approaching rod 504 to drive the positioning plate 3 to move. Further, the staff positions the two measuring plates 301 at both ends of the clamp connector 7 to ensure the accuracy of the test. At this time, the controller 101 controls the simultaneous telescopic movement of the two hydraulic rods 8, thereby driving the right positioning block 404 to rise and fall, so that the positioning pipe 6 at the right end rises and falls, and thus the bending moment of the clamp connector 7 can be tested. At this time, the strain gauge 702 transmits the strain force received by the clamp connector 7 to the controller 101. At the same time, the deformation and water leakage conditions of the clamp connector 7 can be monitored through the observation camera 302. Further, the controller 101 can make the positioning pipe 6 at the right end rotate by controlling the extension of one hydraulic rod 8 and the contraction of the other hydraulic rod 8, so as to test the torque of the clamp connector 7. Due to the action of the measuring shaft 303 and the measuring spring 304, when the strain gauge 702 deforms, the distance between the measuring plates 301 changes. At this time, the controller 101 can monitor the deformation amount of the clamp connector 7 through the deformation displacement sensor 305. Further, the controller 101 controls the extension of the moving rod 506 to drive the right positioning block 404 to move. At this time, the controller 101 can test the displacement amount of the inner end of the connecting pipe 701 according to the data of the clamping displacement sensor 608, the top displacement sensor 401, and the deformation displacement sensor 305, so as to achieve the purpose of testing the clamping effect of the clamp connector 7. When the entire device needs to be disassembled, the controller 101 controls the opening of the right output valve 910 and the right output main valve 206.At this time, the controller 101 continues to control nitrogen to enter the inside of the connecting pipe 701, so that the clear water flows back. Further, the controller 101 controls the reflux valve 914 to open, so that a part of the nitrogen and clear water inside the sealed chamber 906 flows back, facilitating the disassembly of the sealing disc 9.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test device for a pipe clamp connector under combined loads, characterized in that: It includes a ground (1), two support frames (103) are fixedly arranged on the top of the ground (1), a bearing frame (4) is arranged on the top of the two support frames (103), a right positioning block (404) is arranged at the right end of the bearing frame (4), two hydraulic rods (8) are arranged at the bottom of the right positioning block (404), two load sensors (803) are fixedly arranged at the lower end of each hydraulic rod (8), two positioning tubes (6) are arranged inside the bearing frame (4) and the right positioning block (404), a number of clamping main rods (601) are arranged outside each positioning tube (6), two clamping main discs (604) are rotatably connected to the inner side of each clamping main rod (601) through a fixing plate, a clamping sub-disc (603) is arranged at the outer end of each clamping main disc (604), a connecting tube (701) is arranged inside each positioning tube (6), the two connecting tubes (701) are tightly connected through a clamp connector (7), a number of strain gauges (702) are fixedly arranged outside the clamp connector (7), a sealing disc (9) is arranged inside each connecting tube (701), an in-pipe camera (901) is fixedly arranged inside the left sealing disc (9), a water pumping hose (902) is arranged inside the right sealing disc (9), a water pressure sensor (903) is arranged at the top of the water pumping hose (902) and is fixedly connected to the sealing disc (9), a group of adapter plates (905) are arranged on both the inner and outer sides of each sealing disc (9), a sealing chamber (906) is fixedly arranged between the two groups of adapter plates (905) at each end, support rods (5) are arranged at both the front and rear ends of the clamp connector (7), two measuring plates (301) are arranged inside each support rod (5), a deformation displacement sensor (305) is fixedly arranged on the left side of each measuring plate (301) at the right end, a nitrogen tank (2) is fixedly arranged on the top of the ground (1), and a water tank (201) is arranged at the right end of the nitrogen tank (2) and is fixedly connected to the ground (1).

2. The test device for a pipe clamp connector under a combined load according to claim 1, characterized in that: A controller (101) is fixedly arranged on the top of the ground (1), a power supply (102) is fixedly arranged at the right end of the controller (101), input pumps (204) are fixedly arranged inside both the nitrogen tank (2) and the water tank (201), an input main valve (205) is fixedly arranged at the rear end of each input pump (204), an input hose (202) is fixedly arranged at the rear end of each input main valve (205), an output main valve (206) is arranged inside each input pump (204) and is fixedly connected to the nitrogen tank (2) and the water tank (201) at its front end, and an output hose (203) is fixedly arranged at the rear end of each output main valve (206).

3. The test device for the pipe clamp connector under the action of a composite load according to claim 2, characterized in that: At the rear end of each of the input hoses (202), an input pipe (907) is fixed. At the rear end of each of the output hoses (203), an output pipe (908) is fixed. Each of the input pipes (907) and each of the output pipes (908) penetrate through the sealing disc (9) at one end thereof. Inside each of the sealing discs (9), an input valve (909) is provided and is fixedly connected to the input pipe (907). At the front end of each of the input valves (909), an output valve (910) is provided and is fixedly connected to the output pipe (908). The output pipe (908) at the right end is fixedly connected to the water pumping hose (902) inside it.

4. The test device for a pipe clamp connector under a combined load according to claim 3, characterized in that: On both the inner and outer sides of each of the sealing discs (9), a number of fitting rods (904) are fixed. Each of the fitting rods (904) is fixedly connected to the fitting plate (905) at one end thereof. At the bottom of each of the input pipes (907), a sealing valve (913) is fixed. At the bottom of each of the sealing valves (913), a sealing pipe (911) is fixed. At the bottom of each of the output pipes (908), a reflux valve (914) is fixed. At the bottom of each of the reflux valves (914), a reflux pipe (912) is fixed. Each of the sealing pipes (911) and each of the reflux pipes (912) communicate with the sealing chamber (906) outside them. Each of the sealing chambers (906) is in close contact with the connecting pipe (701) outside it.

5. The testing device for a pipe clamp connector under a combined load according to claim 4, characterized in that: Each of the connecting pipes (701) is in close contact with the clamping main disc (604) inside it. Each of the connecting pipes (701) is in close contact with the clamping sub-disc (603) outside it. At the outer end of each of the clamping main rods (601), two clamping main motors (607) are fixed. Each of the clamping main motors (607) is rotationally connected to the clamping main disc (604) inside it. At the telescopic end of each of the clamping main rods (601), a moving rail (610) is provided. Inside each of the moving rails (610), a moving plate (609) is slidably connected. On the outside of each of the moving plates (609), two clamping sub-motors (606) are fixed. Each of the clamping sub-motors (606) is rotationally connected to the clamping sub-disc (603) at one end thereof.

6. The test device for a pipe clamp connector under a combined load according to claim 5, characterized in that: On the inner side of each of the clamping main rods (601), two clamping cameras (605) are also fixed. The telescopic end of each of the moving plates (609) is fixedly connected to the telescopic end of the clamping sub-rod (602) inside it. The fixed end of each of the clamping sub-rods (602) is fixedly connected to the telescopic end of the clamping main rod (601) through a fixing plate. At the fixed end on the inner side of each of the clamping main rods (601), a clamping displacement sensor (608) is also fixed.

7. The test device for a pipe clamp connector under a combined load according to claim 6, characterized in that: The fixed end of each clamping main rod (601) is fixedly connected to the external positioning tube (6). A left positioning block (402) is fixed to the left side of the left positioning tube (6). The left positioning block (402) is fixedly connected to the bearing frame (4) at its left end through bolts. The bottom of the bearing frame (4) is fixedly connected to the support frame (103) through bolts. The right side of the right positioning tube (6) is fixedly connected to the right positioning block (404) at its right end through a flange (405). Top displacement sensors (401) are fixed to the tops of both the bearing frame (4) and the right positioning block (404).

8. A testing device for a pipe clamp connector under combined loads according to claim 7, characterized in that: Two upper hinge joints (802) are fixed to the bottom of the right positioning block (404). A support disc (801) is hinged inside each upper hinge joint (802). Each support disc (801) is fixedly connected to the hydraulic rod (8) at its bottom. The bottom of each hydraulic rod (8) is hinged to a lower hinge joint (804). A load sensor (803) is fixed to the bottom of each load sensor (803). A connecting plate (805) is fixed to the bottom of each connecting plate (805). Each connecting plate (805) is in close contact with the support frame (103) at its bottom. The two connecting plates (805) are fixedly connected by a positioning rod (806). A positioning strip (807) is fixedly connected to the bottom of each connecting plate (805) through bolts. The top of each positioning strip (807) is in close contact with the support frame (103).

9. The testing device for a pipe clamp connector under a combined load according to claim 8, wherein: A moving rod (506) is fixed to the left end of the positioning rod (806). A connecting strip (505) is fixed to the left end of the moving rod (506). Locking plates (501) are fixed to both ends of the front of the connecting strip (505). The locking plates (501) are fixedly connected to the support frame (103) through bolts. Each locking plate (501) is fixedly connected to the support rod (5) at its top. A reversing motor (503) is fixed to the upper left side of each support rod (5). A reversing block (502) is rotatably connected to the right end of each reversing motor (503). A proximity rod (504) is fixed to the inner side of each reversing block (502). A positioning plate (3) is fixed to the inner side of each proximity rod (504).

10. A test device for a pipe clamp connector under a combined load according to claim 9, characterized in that: An observation camera (302) is fixed to the top of each positioning plate (3). Two measuring shafts (303) are slidably connected to the left and right ends of each positioning plate (3). Each measuring shaft (303) is fixedly connected to the measuring plate (301) at one end. A measuring spring (304) is fixed to the inner side of each measuring plate (301). The inner side of each measuring spring (304) is fixedly connected to the positioning plate (3).

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