Vehicle-mounted mobile pressure test device

Abstract

The utility model relates to the technical field of pipeline pressure testing, in particular to a vehicle-mounted mobile pressure testing device. The vehicle-mounted mobile pressure test device comprises a skid-mounted seat, and a generator, a liquid storage tank, a plunger pump, a conveying manifold, a first-stage pump and a second-stage pump which are mounted on the upper surface of the skid-mounted seat. The industrial personal computer is mounted on the skid-mounted seat and electrically connected with the generator, the plunger pump, the first-stage pump and the second-stage pump; the output pipe is installed on the skid-mounted base and communicates with the liquid outlet end of the conveying manifold, a check valve is installed at the front end of the output pipe, an adapter pipe is installed at the end, away from the output pipe, of the check valve, and a hydraulic sensor is installed on the adapter pipe; the circulating pump is mounted on the skid-mounted seat, the liquid outlet end of the circulating pump is communicated with the liquid storage tank through a guide pipe, the liquid inlet end of the circulating pump is communicated with a liquid return pipe, the other end of the liquid return pipe is communicated with the output pipe, and a control valve and a filtering mechanism are mounted on the liquid return pipe; the vehicle-mounted mobile pressure test device provided by the utility model has the advantages of wide pressure test range and clean returned liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline pressure testing, in particular to a vehicle-mounted mobile pressure testing device. Background Art

[0002] With the development of oil and gas pipeline construction technology, more stringent requirements have been put forward for project quality and construction progress. After the installation of long-distance large-scale oil and gas transmission pipelines, the pipelines need to be strictly pressure tested. The purpose of the pressure test is: by applying a certain pressure inside the pipeline, the strength and tightness of the pipeline can be tested, so that defects in the pipeline can be discovered in time, and the quality of the pipeline can be inspected so that measures can be taken as early as possible to eliminate hidden dangers in the pipeline. The applied internal pressure has a certain pre-stretching effect on the pipe, which can fully eliminate the stress concentration phenomenon generated during the construction process of the pipeline such as assembly welding, trenching, and jointing, and achieve a greater degree of safety. Therefore, pipeline pressure testing plays a very important role in the safe operation of long-distance pipelines.

[0003] The current pressure test device needs to have high mobility when pressure testing long-distance oil pipelines because it needs to be moved multiple times to test the pipelines in different conveying sections. Traditional pressure test equipment and supporting equipment need to be installed and debugged one by one before use, which greatly affects the efficiency of the pressure test operation. Publication No.: CN208060300U discloses a vehicle-mounted electric pneumatic pressure test device, including a pressure test host, which includes an oil tank, a primary pump, a secondary pump and a manual stainless steel stop valve. The pressure test host is fixed on a skid-mounted chassis as a whole, and the primary pump and the secondary pump are fixed on the outer wall of the oil tank. The water outlet of the oil tank is connected to a three-cylinder plunger water pump through a filter, and two hydraulic flat valves are connected to one side of the manual stainless steel stop valve. The outside of the hydraulic flat valve is connected to a micro hydraulic station, and a PLC control cabinet is arranged at the bottom of the micro hydraulic station. The utility model has the functions of manual pressure test, automatic pressure test, automatic judgment on whether the pressure test is qualified and overpressure alarm, and has the characteristics of large displacement and high efficiency of pressure test; it greatly reduces the workload of transportation and the time of relocation and installation, and improves efficiency. However, when it is used in practice, the liquid in the oil tank needs to be replenished after pressurization and cannot be recovered, and pressurization can only carry out a single static pressure maintenance test, and the detection is not comprehensive enough.

[0004] Therefore, it is necessary to provide a new vehicle-mounted mobile pressure testing device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a vehicle-mounted mobile pressure testing device with a wide pressure testing range and liquid return cleaning function.

[0006] The vehicle-mounted mobile pressure test device provided by the utility model comprises: a skid-mounted seat, and a generator, a liquid storage tank, a plunger pump, a delivery manifold, a primary pump and a secondary pump installed on the upper surface of the skid-mounted seat, the liquid inlet end of the plunger pump is connected to the liquid storage tank, the liquid outlet end of the plunger pump is connected to the delivery manifold, and the primary pump and the secondary pump are connected in series to the delivery manifold;

[0007] An industrial computer is installed on the skid-mounted base and is electrically connected to the generator, the plunger pump, the primary pump and the secondary pump;

[0008] An output pipe is installed on the skid-mounted seat and communicated with the liquid outlet of the delivery manifold, and a check valve is installed at the front end of the output pipe, a transfer pipe is installed at the end of the check valve away from the output pipe, a hydraulic sensor is installed on the transfer pipe, and the hydraulic sensor is electrically connected to the industrial control machine;

[0009] A circulation pump is installed on the skid-mounted seat, and the liquid outlet end of the circulation pump is connected to the liquid storage tank through a conduit, the liquid inlet end of the circulation pump is connected to a return pipe, the other end of the return pipe is connected to the output pipe, and a control valve and a filtering mechanism are installed on the return pipe.

[0010] Preferably, the filtering mechanism includes an intermediate tube, one end of which is connected to the liquid return pipe, and a sleeve is connected to the intermediate tube, both ends of the sleeve are installed with end covers, one end of which is connected to the liquid return pipe through a conduit, and a filter element is pressed between the two end covers.

[0011] Preferably, the end cover is threadedly connected to the sleeve.

[0012] Preferably, a pressure regulating assembly is provided at the other end of the intermediate tube, and the pressure regulating assembly includes a buffer cylinder, which is connected to the other end of the intermediate tube, and a piston rod is slidably installed in the buffer cylinder, and the piston of the piston rod slides with the inner wall of the buffer cylinder, and the other end of the piston rod is connected to a hydraulic cylinder, which is fixedly installed on the skid seat and electrically connected to the industrial control machine.

[0013] Preferably, a heating box is installed on the liquid return pipe.

[0014] Preferably, a protective box is installed on the skid-mounted seat, a plurality of lifting ears are installed on the top of the protective box, and a box door is installed on one side of the protective box.

[0015] Compared with the related art, the vehicle-mounted mobile pressure test device provided by the utility model has the following beneficial effects:

[0016] 1. The utility model provides a vehicle-mounted mobile pressure test device, which is convenient for recovering the pressurized medium after the pressure test by arranging a circulation pump on the skid-mounted seat, and when recovering, the pressurized medium is filtered by the cooperation of the intermediate tube, sleeve, end cover and filter element of the filtering mechanism, so as to facilitate repeated pressure test operation;

[0017] 2. By setting the adjustment component, after completing the conventional pressure-maintaining and pressure-testing operation, when repeating the pressure-maintaining operation, the hydraulic cylinder is used to push the piston rod to move in the buffer cylinder, thereby simulating the pipeline pressure test conditions under dynamic pressure changes and increasing the range of pressure test detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural schematic diagram of a preferred embodiment of the vehicle-mounted mobile pressure testing device provided by the utility model;

[0019] Figure 2 A schematic diagram of a structure in which an intermediate tube is installed on the return pipe of the vehicle-mounted mobile pressure test device provided by the utility model;

[0020] Figure 3 A schematic diagram of the cross-sectional structure of the intermediate tube provided by the utility model;

[0021] Figure 4 A schematic structural diagram of a protective box body installed on a skid-mounted seat provided by the utility model.

[0022] Numbers in the figure: 1. Skid-mounted seat; 11. Generator; 12. Liquid storage tank; 13. Plunger pump; 14. Delivery manifold; 15. Primary pump; 16. Secondary pump; 17. Protective box; 18. Lifting ear; 19. Box door; 2. Industrial computer; 3. Output pipe; 31. Check valve; 32. Transfer pipe; 33. Hydraulic sensor; 4. Circulation pump; 5. Liquid return pipe; 6. Control valve; 7. Filter mechanism; 71. Intermediate pipe; 72. Sleeve; 73. End cover; 74. Filter element; 8. Pressure regulating assembly; 81. Buffer cylinder; 82. Piston rod; 83. Hydraulic cylinder; 9. Heating box. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0025] See also Figures 1 to 4 The embodiment of the utility model provides a vehicle-mounted mobile pressure test device, the vehicle-mounted mobile pressure test device comprising:

[0026] A skid-mounted seat 1, and a generator 11, a liquid storage tank 12, a plunger pump 13, a delivery manifold 14, a primary pump 15 and a secondary pump 16 installed on the upper surface of the skid-mounted seat 1, wherein the liquid inlet end of the plunger pump 13 is connected to the liquid storage tank 12, the liquid outlet end of the plunger pump 13 is connected to the delivery manifold 14, and the primary pump 15 and the secondary pump 16 are connected in series to the delivery manifold 14;

[0027] The industrial computer 2 is installed on the skid 1 and is electrically connected to the generator 11, the plunger pump 13, the primary pump 15 and the secondary pump 16;

[0028] The output pipe 3 is installed on the skid-mounted seat 1 and communicated with the liquid outlet end of the delivery manifold 14, and a check valve 31 is installed at the front end of the output pipe 3, and a transfer pipe 32 is installed at the end of the check valve 31 away from the output pipe 3, and a hydraulic sensor 33 is installed on the transfer pipe 32, and the hydraulic sensor 33 is electrically connected to the industrial computer 2;

[0029] A circulation pump 4 is installed on the skid-mounted seat 1, and the liquid outlet end of the circulation pump 4 is connected to the liquid storage tank 12 through a conduit, the liquid inlet end of the circulation pump 4 is connected to a return pipe 5, the other end of the return pipe 5 is connected to the output pipe 3, and a control valve 6 and a filtering mechanism 7 are installed on the return pipe 5.

[0030] The filtering mechanism 7 includes an intermediate tube 71, one end of which is connected to the liquid return pipe 5, and a sleeve 72 is connected to the intermediate tube 71, and end covers 73 are installed at both ends of the sleeve 72, one end of the end cover 73 is connected to the liquid return pipe 5 through a conduit, and a filter element 74 is pressed between the two end covers 73.

[0031] It should be noted that: when in use, the adapter tube 32 at the front end of the output tube 3 is connected to the pipeline of the pressure test pipeline. When connected, the pressure test pipeline is closed, and then the generator 11 is used to provide power for the entire pressure test device. Then, the plunger pump 13 is controlled by the industrial computer 2 to inject the liquid in the liquid storage tank 12 into the pressure test pipeline. After injection, the first-level pump 15 and the second-level pump 16 are used to apply the calibrated pressure test pressure through the delivery manifold 14. The pressure of the pressure test is monitored by the hydraulic sensor 33. During the pressure test, the control valve 6 is closed, and then a conventional pressure-maintaining pressure test operation is performed, and the test results are entered into the industrial computer 2. Leakage detection and repair are performed on unqualified pipelines. After the pressure test is completed, the control valve 6 is opened, and the circulation pump 4 is started to pass the pressure test medium through the return pipe 5 and the intermediate pipe 71 and the filter element 74 of the filter mechanism 7 in turn, and the pressure test medium filtered by the filter element 74 is recovered into the liquid storage tank 12, so as to facilitate the next pressure test operation.

[0032] In the embodiments of the present invention, please refer to Figures 1 to 4 , the end cover 73 is threadedly connected to the sleeve 72;

[0033] It should be noted that: in this way, the filter element 74 is pressed into the sleeve 72 by the end caps 73 at both ends, and the end caps 73 are threadedly connected with the sleeve 72, so that it is convenient to disassemble and replace the filter element 74 later;

[0034] In this embodiment, a heating box 9 is installed on the liquid return pipe 5 .

[0035] In the embodiments of the present invention, please refer to Figures 1 to 4 The other end of the intermediate tube 71 is provided with a pressure regulating assembly 8, and the pressure regulating assembly 8 includes a buffer cylinder 81, and the buffer cylinder 81 is connected with the other end of the intermediate tube 71, and a piston rod 82 is slidably installed in the buffer cylinder 81, and the piston of the piston rod 82 is slidably matched with the inner wall of the buffer cylinder 81, and the other end of the piston rod 82 is connected with a hydraulic cylinder 83, and the hydraulic cylinder 83 is fixedly installed on the skid 1 and electrically connected with the industrial computer 2;

[0036] It should be noted that: after completing the conventional pressure-maintaining test, each pressure test is repeated. During the test, the hydraulic cylinder 83 is controlled to drive the piston rod 82 to move back and forth alternately in the buffer cylinder 81, thereby realizing dynamic pressure test simulation and improving the pressure test detection range of the oil pipeline.

[0037] In the embodiments of the present invention, please refer to Figures 1 to 4 A protective box 17 is installed on the skid-mounted seat 1 , a plurality of lifting ears 18 are installed on the top of the protective box 17 , and a box door 19 is installed on one side of the protective box 17 .

[0038] It should be noted that the skid-mounted seat 1 uses the protective box 17 to protect the entire pressure test equipment, and is provided with lifting ears 18 for easy loading and lifting, so as to facilitate lifting on the vehicle body for mobile pressure testing.

[0039] The working principle of the vehicle-mounted mobile pressure test device provided by the utility model is as follows:

[0040] When in use, the transfer tube 32 at the front end of the output tube 3 is connected to the pipeline of the pressure test pipeline. When connected, the pressure test pipeline is closed, and then the generator 11 is used to provide power for the entire pressure test device. Then, the plunger pump 13 is controlled by the industrial computer 2 to inject the liquid in the liquid storage tank 12 into the pressure test pipeline. After injection, the first-level pump 15 and the second-level pump 16 are used to apply the calibrated pressure test pressure through the delivery manifold 14. The pressure of the pressure test is monitored by the hydraulic sensor 33. During the pressure test, the control valve 6 is closed, and then the conventional pressure maintenance and pressure test operation is performed, and the detection result is entered into the industrial computer 2. Leakage detection and repair are performed on unqualified pipelines. After the pressure test is completed, the control valve 6 is opened, and the circulation pump 4 is started to pass the pressure test medium through the return pipe 5 and the intermediate pipe 71 and the filter element 74 of the filter mechanism 7 in turn, and the pressure test medium filtered by the filter element 74 is recovered into the liquid storage tank 12, so as to facilitate the next pressure test operation.

[0041] Furthermore, after completing the conventional pressure-maintaining test, each pressure test is repeated. During the test, the hydraulic cylinder 83 is controlled to drive the piston rod 82 to move back and forth alternately in the buffer cylinder 81, thereby realizing dynamic pressure test simulation and improving the pressure test detection range of the oil pipeline.

[0042] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0043] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vehicle-mounted mobile pressure test device, comprising: A skid-mounted seat (1), and a generator (11), a liquid storage tank (12), a plunger pump (13), a delivery manifold (14), a primary pump (15), and a secondary pump (16) mounted on an upper surface of the skid-mounted seat (1), wherein a liquid inlet end of the plunger pump (13) is connected to the liquid storage tank (12), a liquid outlet end of the plunger pump (13) is connected to the delivery manifold (14), and the primary pump (15) and the secondary pump (16) are connected in series to the delivery manifold (14); An industrial computer (2) is mounted on the skid-mounted base (1) and is electrically connected to the generator (11), the plunger pump (13), the primary pump (15) and the secondary pump (16); It is characterized by further comprising: An output pipe (3) is mounted on the skid-mounted seat (1) and is in communication with the liquid outlet end of the delivery manifold (14), and a check valve (31) is mounted at the front end of the output pipe (3), a transfer pipe (32) is mounted at the end of the check valve (31) facing away from the output pipe (3), a hydraulic pressure sensor (33) is mounted on the transfer pipe (32), and the hydraulic pressure sensor (33) is electrically connected to the industrial control computer (2); A circulation pump (4) is mounted on the skid-mounted seat (1), and a liquid outlet end of the circulation pump (4) is connected to a liquid storage tank (12) via a conduit, a liquid inlet end of the circulation pump (4) is connected to a liquid return pipe (5), the other end of the liquid return pipe (5) is connected to an output pipe (3), and a control valve (6) and a filter mechanism (7) are installed on the liquid return pipe (5).

2. The vehicle-mounted mobile pressure test device according to claim 1, characterized in that: The filtering mechanism (7) comprises an intermediate tube (71), one end of the intermediate tube (71) being in communication with the liquid return tube (5), and a sleeve (72) being in communication with the intermediate tube (71), and end covers (73) being installed at both ends of the sleeve (72), wherein the end cover (73) at one end is in communication with the liquid return tube (5) via a conduit, and a filter element (74) is press-fitted between the two end covers (73).

3. The vehicle-mounted mobile pressure test device according to claim 2, characterized in that: The end cover (73) is threadedly connected to the sleeve (72).

4. The vehicle-mounted mobile pressure test device according to claim 2, characterized in that: The other end of the intermediate tube (71) is provided with a pressure regulating assembly (8), the pressure regulating assembly (8) comprising a buffer cylinder (81), the buffer cylinder (81) being in communication with the other end of the intermediate tube (71), and a piston rod (82) being slidably mounted in the buffer cylinder (81), the piston of the piston rod (82) being in slidable cooperation with the inner wall of the buffer cylinder (81), the other end of the piston rod (82) being in communication with a hydraulic cylinder (83), the hydraulic cylinder (83) being fixedly mounted on the skid mount (1) and electrically connected to the industrial computer (2).

5. The vehicle-mounted mobile pressure test device according to claim 1, characterized in that: A heating box (9) is installed on the liquid return pipe (5).

6. The vehicle-mounted mobile pressure test device according to claim 1, characterized in that: A protective box (17) is installed on the skid-mounted seat (1), a plurality of lifting ears (18) are installed on the top of the protective box (17), and a box door (19) is installed on one side of the protective box (17).

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