A vibration balance test device for high flow rate pressure pipeline unit

Abstract

The present invention relates to the field of vibration testing technology, and in particular to a vibration balance testing device for a high-flow-rate pressure pipeline unit, comprising a pipeline support adjustment assembly horizontally mounted on the top of an existing test bench, pipeline support test units are respectively mounted on the top of each sliding seat on the pipeline support adjustment assembly, both sides of the middle curved pipe section of the pressure pipeline unit to be tested respectively pass through the pipeline support test units at their corresponding positions, the feed end and the discharge end of the pressure pipeline unit are respectively connected to external matching pipelines, when the liquid flow parameters of the liquid medium inside the pressure pipeline unit change. The high-flow-rate pressure pipeline unit vibration balance testing device in the present invention can complete the collection of vibration conditions during the simulated operation of the pipeline under different installation position states for the early installation of the high-flow-rate pressure pipeline, and effectively provide a basis for the subsequent actual installation of the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of vibration testing, in particular to a vibration balance testing device for a high-flow-rate pressure pipeline unit. Background Art

[0002] According to the Regulations on Safety Supervision of Special Equipment, pressure pipeline units are divided into different levels, including long-distance pipelines (GA), public pipelines (GB), industrial pipelines (GC) and power pipelines (GD), as well as different pressure levels such as vacuum pipelines, low-pressure pipelines, etc. Pressure pipeline units are used to transport various gases, liquids or solid particle fluids. To ensure the safety and reliability of the pipelines, it is of great significance to test their vibration balance.

[0003] In the prior art with patent application number CN201711448073.7 and IPC classification number G01M7 / 02, a device for pipeline vibration testing is disclosed, whose main structure includes a pulsation component, which includes a driving mechanism, vibration isolation sections at both ends, a U-shaped bend pipe section, a test piece, a visualization pipe section, a pipeline support structure and a pressure measurement system; the vibration isolation section is installed at two sections of the device, and the visualization pipe section, the test piece, and the U-shaped bend pipe section are connected in sequence between the two isolation sections; the pressure testing system is installed in front and behind the test piece, the driving mechanism is installed on one side of the U-shaped bend pipe section and connected to the vibration isolation section, and the pipeline support structure supports the entire device.

[0004] It can be seen that the above-mentioned test platform mainly adopts a starting pump to provide power and relies on the fluid to change the flow direction of the pipeline layout through the U-shaped bend, adjusts the opening of different valves, and carries out valve throttling to induce pipeline vibration test to complete the pipeline vibration test; however, this test device only induces pipeline vibration by changing the valve throttling, and cannot cope with the simulation test of the support vibration balance of the pressure pipeline unit under different pressure and flow conditions, and cannot effectively simulate the safe installation and construction operations under different pipeline working conditions.

[0005] Based on this, the present invention optimizes and improves the problems existing in the vibration testing process of existing high-flow rate pressure pipeline unit components, and hereby proposes a high-flow rate pressure pipeline unit vibration balance testing device to better solve the problems existing in the prior art. Summary of the invention

[0006] The present invention is to solve one of the above-mentioned technical problems, and the technical solution adopted is: a vibration balance testing device for a high-flow-rate pressure pipeline unit, comprising a pipeline support adjustment assembly horizontally installed on the top of an existing test bench, pipeline support test units are respectively installed on the top of each sliding seat on the pipeline support adjustment assembly, both sides of the middle curved pipe section of the pressure pipeline unit to be tested respectively pass through the pipeline support test units at their corresponding positions, the feed end and the discharge end of the pressure pipeline unit are respectively connected to external matching pipelines, when the liquid flow parameters of the liquid medium inside the pressure pipeline unit change, each of the pipeline support test units cooperates to realize the collection of the current external vibration parameters of the pressure pipeline unit, and the pipeline support adjustment assembly drives each of the pipeline support test units to shift through its own operation.

[0007] In any of the above schemes, it is preferred that the pressure pipeline unit includes a plurality of straight pipes, adjacent straight pipes are connected by right-angle bends and the connection parts are sealed, the straight pipes are internally connected to the adjacent right-angle bends, a variable control pump is installed on the straight pipe at the feed end, and a flow regulating valve is installed on the straight pipe at the discharge end, and the flow regulating valve cooperates with the variable control pump to realize the regulation of liquid flow parameters inside the pressure pipeline unit.

[0008] In any of the above schemes, it is preferred that the pipeline support test unit includes a vertically arranged vertical electric cylinder, the bottom of the vertical electric cylinder is fixedly mounted on the top of the sliding seat at its corresponding position, a connecting seat is fixedly mounted on the top of the piston rod of the vertical electric cylinder, a pipeline restraint is installed on the top of the connecting seat, the pipeline restraint is used to be sleeved on the outside of the straight pipe at the current position, a plurality of pipeline radial vibration collectors are evenly spaced around the pipeline restraint along its circumference, and pipeline axial displacement collectors are symmetrically installed on the front and rear sides of the pipeline restraint.

[0009] In any of the above solutions, preferably, the initial position of each pipeline radial vibration collector can be adjusted individually.

[0010] In any of the above schemes, it is preferred that the pipe restraint includes a lower semicircular seat fixedly mounted on the top of the connecting seat, an upper semicircular seat is detachably bolted and fixed on the top of the lower semicircular seat, a through cavity for the straight pipe to pass through is formed between the upper semicircular seat and the lower semicircular seat, inner spiral tubes are fixedly arranged at intervals on the inner side walls of the upper semicircular seat and the lower semicircular seat, an internal thread is arranged in the tube cavity of each of the inner spiral tubes, and the pipeline radial vibration collector is threadedly screwed in the tube cavity of each of the inner spiral tubes.

[0011] In any of the above schemes, preferably, the pipeline radial vibration collector includes an adjusting outer spiral tube threadedly screwed into the inner spiral tube, an outer thread is provided on the outer wall of the adjusting outer spiral tube, a displacement sensor is installed on the outer end of the adjusting outer spiral tube, a front end test head of the displacement sensor passes through a central cavity provided through the center of the adjusting outer spiral tube and passes out into the through cavity, each front end test head is used to abut the outer side wall of the straight pipe, and when the straight pipe undergoes radial displacement, the front end test head at the corresponding position can measure its displacement parameter and feed back to the external controller through signal transmission.

[0012] In any of the above schemes, preferably, the initial position of the displacement sensor at the current position can be adjusted by screwing the position-adjusting outer screw tube. Each displacement sensor adopts a built-in spring displacement sensor, which plays a supporting role in an idle state and plays a role in collecting vibration information when the straight pipe vibrates.

[0013] In any of the above schemes, preferably, the pipeline axial displacement collector includes a horizontal side seat fixedly mounted on one side of the connecting seat, a U-shaped mounting frame is arranged above the horizontal side seat, a roller displacement sensor is installed in the U-shaped mounting frame, the top of the roller displacement sensor abuts against the bottom of the outer wall of the straight pipe, and two vertical guide rods are fixed at intervals at the bottom of the U-shaped mounting frame, and the lower end of each of the vertical guide rods can move through the through hole on the horizontal side seat and extend to the bottom thereof, and support springs are respectively sleeved on the outer wall of each of the vertical guide rods between the U-shaped mounting frame and the horizontal side seat, and the top of each support spring is mounted on the bottom of the U-shaped mounting frame, and the top of each support spring is mounted on the top of the horizontal side seat.

[0014] In any of the above schemes, preferably, the inner end of each pipeline radial vibration collector is arranged along the radial direction of the straight pipe and extends into the through cavity and then presses against the outer side wall of the current straight pipe.

[0015] In any of the above schemes, preferably, the top of the pipeline axial displacement collector is pressed against the bottom outer wall of the straight pipe and when the straight pipe undergoes axial displacement, the pipeline axial displacement collector can collect displacement parameters of the straight pipe.

[0016] In any of the above schemes, it is preferred that the angle between the two ends of the right-angle bend to be tested and the straight pipe is a right angle; the center point of the right-angle bend is the zero point of the scale line, and X-axis coordinate scales and Y-axis coordinate scales are provided along the extension direction of the straight pipe on both sides of the right-angle bend.

[0017] In any of the above schemes, it is preferred that the coordinate scale of the pressure pipeline unit needs to be recorded after each positioning, and that at least N adjustments of the liquid flow of the liquid medium inside the pressure pipeline unit need to be completed under the current position coordinates, and the vibration information collected by the current pressure pipeline unit after each adjustment needs to be recorded; wherein the vibration information includes the vibration amplitude and vibration frequency of the current straight pipe.

[0018] In any of the above schemes, preferably, the pipeline support positioning assembly is used to control the translational displacement of the two pressure pipeline units along the X-axis coordinate scale and the Y-axis coordinate scale respectively.

[0019] In any of the above schemes, it is preferred that the pipeline support and positioning assembly includes a right-angle frame fixedly installed on the top of the existing test bench, and the right-angle frame is integrally formed by a first straight-side frame and a second straight-side frame which are perpendicular to each other; a first lead screw is installed inside the first straight-side frame, and both ends of the first lead screw are movable through to the outside of the first straight-side frame; a second lead screw is installed inside the second straight-side frame, and both ends of the second lead screw are movable through to the outside of the second straight-side frame; a single-power bidirectional drive mechanism is provided at the connecting end of the first straight-side frame and the second straight-side frame, and the two output ends of the single-power bidirectional drive mechanism are respectively used to connect the first lead screw and the second lead screw, and sliding seats are respectively screwed on the outer side walls of the first lead screw and the outer side walls of the second lead screw, and the two sides of the sliding seat are respectively abutted against the inner side walls of the right-angle frame.

[0020] In any of the above schemes, it is preferred that the single-power bidirectional driving mechanism includes a gear cavity arranged at a right-angled position of the right-angle frame, and four first bevel gears, second bevel gears, third bevel gears, and fourth bevel gears are evenly distributed in the circumferential direction and meshed with each other are arranged inside the gear cavity, the gear shaft of the first bevel gear movably passes through the mounting hole on the inner wall of the gear cavity and extends to its outside and is connected to the driving motor, the driving motor is fixed on the outer wall of the right-angle frame, the gear shaft of the second bevel gear is coaxially fixedly connected to the end of the first screw, the gear shaft of the third bevel gear is coaxially fixedly connected to the end of the second screw, and the gear shaft of the fourth bevel gear movably passes through the outside of the gear cavity; wherein the first bevel gear is a driving gear, the second bevel gear, the third bevel gear, and the fourth bevel gear are all passive gears, and a gear box cover is bolted and installed on the top of the gear cavity.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The vibration balance test device for a high-flow pressure pipeline unit in the present invention can collect vibration conditions during the simulated operation of the pipeline under different installation positions for the early installation of the high-flow pressure pipeline, and effectively provide a basis for the subsequent actual installation of the pipeline.

[0023] 2. After completing the installation of the straight pipes, curved pipes, variable control pumps and flow regulating valves of the large-flow pressure pipeline unit, the two pipeline support test units can be used to support the middle part of the entire pipeline, effectively simulating the support effect of the pipeline after installation; the displacement of the pipeline support test unit is achieved by controlling the pipeline support adjustment component, thereby completing the simulation of different support installation positions of the pipeline and completing the vibration test at the same time, ensuring the comprehensiveness of the simulation of the actual installation position and the different effects of different installation positions on the stable operation of the pipeline.

[0024] 3. The pipeline support adjustment component in the present invention adopts a single power structure, which can effectively realize the synchronous adjustment of the position of the pipeline support test unit that supports the bottom of the straight pipe on both sides of the key right-angle bend pipe, effectively improve the adjustment efficiency and maintain the relative synchronization of the pipeline support test units on both sides during adjustment, which helps to provide a reference basis for the subsequent actual installation of the current pipeline through the collection and subsequent analysis of vibration information after the pipeline simulation operation, thereby improving the subsequent construction efficiency and effect.

[0025] 4. The present invention can support the straight pipe while maintaining the collection of vibration information of the straight pipe under different flow rates and liquid pressure conditions; at the same time, by adjusting the position of the pipeline support test unit, it is possible to find the coordinate position that can minimize the vibration, thereby providing a reference basis for subsequent actual installation.

[0026] 5. In the invention, when collecting vibration information of a straight pipe, not only radial vibration can be collected, but also axial displacement caused by flow velocity pressure shock inside the pipe can be collected, effectively simulating the real-time acquisition of vibration and displacement conditions under actual operating conditions, so as to better analyze the use effect and safety analysis and simulation of large-flow pressure pipes after subsequent actual installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn according to the actual scale.

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of the pressure pipe unit installed in the present invention.

[0029] Figure 2 for Figure 1 Schematic diagram of the top view structure.

[0030] Figure 3 It is a schematic diagram of the top view of the structure of the present invention when the pressure pipe unit is not installed.

[0031] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure.

[0032] Figure 5 It is a schematic diagram of the main structure of the pipeline support test unit of the present invention.

[0033] Figure 6 It is a side structural schematic diagram of the pipeline support test unit of the present invention.

[0034] Figure 7 It is a partial enlarged structural schematic diagram of the pipeline support and positioning assembly of the present invention.

[0035] In the figure, 1, straight pipe; 2, right angle elbow; 3, variable control pump; 4, flow control valve; 5, vertical electric cylinder; 6, sliding seat; 7, connecting seat; 8, pipeline radial vibration collector; 801, position adjustment outer screw tube; 802, displacement sensor; 803, front end test head; 9, pipeline axial displacement collector; 901, horizontal side seat; 902, U-shaped mounting frame; 903, roller displacement sensor; 904, vertical guide rod; 905, vertical guide rod; 906, vertical guide rod; 907, vertical guide rod; 908, vertical guide rod; 909, vertical guide rod; 910, vertical guide rod; 911, horizontal side seat; 912, U-shaped mounting frame; 913, vertical guide rod; 914, vertical guide rod; 915, vertical guide rod; 916, vertical guide rod; 917, vertical guide rod; 918, vertical guide rod; 919, vertical guide rod; 920, vertical guide rod; 921, vertical guide rod; 922, vertical guide rod; 923, vertical guide rod; 924, vertical guide rod; 925, vertical guide rod; 926, vertical guide rod; 927, vertical guide rod; 928, vertical guide rod; 929, vertical guide rod; 930, vertical guide rod; 931, horizontal side seat; 932, U-shaped mounting frame; 933, roller displacement sensor; 934, vertical guide rod; 935, vertical guide rod; 936, vertical guide rod; 937, vertical guide rod; 938, vertical guide rod; 939, vertical guide rod; 940, vertical guide rod; 941, vertical guide rod; 942, vertical guide rod; 943, vertical guide rod; 944, vertical guide rod; 945, vertical guide rod; 946 05. Support spring; 10. Lower semicircular seat; 11. Upper semicircular seat; 12. Through cavity; 13. Inner screw; 14. Right-angle frame; 1401. First straight-side frame; 1402. Second straight-side frame; 15. First lead screw; 16. Second lead screw; 17. Gear cavity; 18. First bevel gear; 19. Second bevel gear; 20. Third bevel gear; 21. Fourth bevel gear; 22. Drive motor; 23. Gear box cover. DETAILED DESCRIPTION

[0036] The following is a detailed description of the embodiments of the technical solution of the present invention in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present invention. Figure 1-Figure 7 as shown in .

[0037] Embodiment 1: A vibration balance testing device for a high-flow-rate pressure pipeline unit, comprising a pipeline support positioning assembly horizontally installed on the top of an existing test bench, wherein pipeline support test units are respectively installed on the top of each sliding seat 6 on the pipeline support positioning assembly, and both sides of the middle bend section of the pressure pipeline unit to be tested respectively pass through the pipeline support test units at their corresponding positions, and the feed end and the discharge end of the pressure pipeline unit are respectively connected to external matching pipelines, and when the liquid flow parameters of the liquid medium inside the pressure pipeline unit change, each of the pipeline support test units cooperates to realize the collection of the current external vibration parameters of the pressure pipeline unit, and the pipeline support positioning assembly drives each of the pipeline support test units to shift through its own operation.

[0038] The high-flow-rate pressure pipeline unit vibration balance test device of the present invention is directly installed on the top of the existing test bench, and is mainly used to complete the simulated installation and positioning of the high-flow-rate pressure pipeline unit to be tested. At the same time, after installation, the pipeline can be supported by two pipeline support adjustment components; after installation, the pressure pipeline unit is connected to the external pipeline, and the variable control pump 3 and the flow regulating valve 4 are controlled to adjust the current liquid flow rate and pressure changes inside the pipeline; thereby simulating various working conditions inside the pipeline in actual operation; whenever the pipeline support adjustment component is adjusted to a test position, it maintains its stable positioning, and at the same time keeps the pipeline conveying liquid and maintains the set time. During the operation, the pipeline support test unit collects the vibration information of the current pipeline in real time, so that the vibration condition of the pipeline under the current simulated operating condition can be effectively collected, which is convenient for the subsequent analysis of the safety of the pipeline under the vibration condition.

[0039] In any of the above schemes, it is preferred that the pressure pipeline unit includes a plurality of straight pipes 1, adjacent straight pipes 1 are connected by right-angle bends 2 and the connection parts are sealed, the straight pipes 1 are internally connected to the adjacent right-angle bends 2, a variable control pump 3 is installed on the straight pipe 1 at the feed end, and a flow regulating valve 4 is installed on the straight pipe 1 at the discharge end, and the flow regulating valve 4 cooperates with the variable control pump 3 to realize the regulation of liquid flow parameters inside the pressure pipeline unit.

[0040] It should be noted that the straight pipe 1, right-angle elbow 2, variable control pump 3, and flow regulating valve 4 used in the pressure pipe unit are the same as those in the actual installation, so as to achieve the purpose of real simulation test.

[0041] After installation, the variable control pump 3 and the flow regulating valve 4 are adjusted to simulate the operation under different liquid flow and pressure conditions, effectively approaching the actual use conditions and ensuring the similarity between the simulation results and the actual results.

[0042] In any of the above schemes, it is preferred that the pipeline support test unit includes a vertically arranged vertical electric cylinder 5, the bottom of the vertical electric cylinder 5 is fixedly mounted on the top of the sliding seat 6 at its corresponding position, a connecting seat 7 is fixedly mounted on the top of the piston rod of the vertical electric cylinder 5, and a pipeline restraint is installed on the top of the connecting seat 7. The pipeline restraint is used to be sleeved on the outside of the straight pipe 1 at the current position, and a plurality of pipeline radial vibration collectors 8 are evenly spaced around the pipeline restraint along its circumference, and pipeline axial displacement collectors 9 are symmetrically installed on the front and rear sides of the pipeline restraint.

[0043] It should be noted that after installation, the pipeline support test unit relies on the lifting and lowering of the vertical electric cylinder 5 to achieve the purpose of initial height adjustment. When adjusted into place, the vertical electric cylinder 5 is locked and connected to the periphery of the straight pipe 1 by relying on the pipeline restraint. At the same time, by adjusting and controlling each pipeline radial vibration collector 8, the current straight pipe 1 is pressed tightly and positioned, and then by adjusting the corresponding pipeline axial displacement collector 9, the bottom support of the current straight pipe 1 can be completed, so that when the straight pipe 1 is shifted, its displacement parameters can be obtained and transmitted to the outside in time.

[0044] In any of the above solutions, it is preferred that the initial position of each pipeline radial vibration collector 8 can be adjusted individually.

[0045] The individual adjustment of each pipeline radial vibration collector 8 can better ensure its flexibility during adjustment and displacement, and effectively ensure that each pipeline radial vibration collector 8 can achieve the purpose of accurately pressing against the outer wall of the straight pipe 1.

[0046] In any of the above schemes, it is preferred that the pipeline restraint includes a lower semicircular seat 10 fixedly mounted on the top of the connecting seat 7, an upper semicircular seat 11 is detachably bolted and fixed on the top of the lower semicircular seat 10, a through cavity 12 for the straight pipe 1 to pass through is formed between the upper semicircular seat 11 and the lower semicircular seat 10, inner spiral tubes 13 are fixedly arranged at intervals on the inner side walls of the upper semicircular seat 11 and the lower semicircular seat 10, an internal thread is arranged in the tube cavity of each of the inner spiral tubes 13, and the pipeline radial vibration collector 8 is threadedly screwed in the tube cavity of each of the inner spiral tubes 13.

[0047] In any of the above schemes, it is preferred that the inner end of each pipeline radial vibration collector 8 is arranged along the radial direction of the straight pipe 1 and extends into the through cavity 12 and then presses against the outer wall of the current straight pipe 1.

[0048] It should be noted that the pipeline restraint as a whole relies on the upper semicircular holder 11 and the lower semicircular holder 10 which can be quickly bolted or disassembled to achieve constraint limitation. When limiting, the straight pipe 1 passes through the through cavity 12 and is elastically constrained and supported by the four pipeline radial vibration collectors 8 extending into the through cavity 12, thereby achieving the purpose of initial positioning.

[0049] In any of the above schemes, it is preferred that the top of the pipeline axial displacement collector 9 is pressed against the bottom outer wall of the straight pipe 1 and when the straight pipe 1 has axial displacement, the pipeline axial displacement collector 9 can collect displacement parameters of the straight pipe 1.

[0050] The pipeline axial displacement collector 9 can effectively test and collect the displacement caused by the axial impact force of the pipeline when there is liquid impact pressure inside the pipeline, and effectively analyze the axial impact conditions under different flow rates and pressure conditions.

[0051] In any of the above schemes, it is preferred that the angle between the two ends of the right-angle bend pipe 2 to be tested and the straight pipe pipeline 1 is a right angle; the center point of the right-angle bend pipe 2 is the zero point of the scale line, and X-axis coordinate scales and Y-axis coordinate scales are provided along the extension direction of the straight pipe pipeline 1 on both sides of the right-angle bend pipe 2.

[0052] The present invention mainly tests the vibration of pipelines at right-angle and large flow conditions where the impact on the turning part is relatively large. Here, the center point of the right-angle elbow 2 is used as the zero point of the scale line, and then the scale is extended along the straight pipes 1 on both sides. This can better quantify the installation positioning position of the current pipeline support test unit, ensure the effective recording of the installation position, and provide a reference basis for the installation distance of the support structure of the subsequent actual pipeline bend.

[0053] In any of the above schemes, it is preferred that the coordinate scale of the pressure pipeline unit needs to be recorded after each positioning, and that at least N adjustments of the liquid flow of the liquid medium inside the pressure pipeline unit need to be completed at the current position coordinates, and the vibration information collected by the current pressure pipeline unit after each adjustment needs to be recorded; wherein the vibration information includes the vibration amplitude and vibration frequency of the current straight pipe 1.

[0054] After each pipeline support test unit is positioned and installed, a test is carried out in the installation position state, which can effectively ensure rapid testing and obtain the pipeline vibration conditions and safe operation conditions when responding to different liquid medium flow conditions when the current support installation position; finally, a better installation plan for the pipeline support test unit is obtained by comparing the vibration conditions in different installation position states.

[0055] In any of the above schemes, preferably, the pipeline support positioning assembly is used to control the translational displacement of the two pressure pipeline units along the X-axis coordinate scale and the Y-axis coordinate scale respectively.

[0056] Embodiment 2: Compared with Embodiment 1, this embodiment is different in that it also includes the following technical features:

[0057] In any of the above schemes, it is preferred that the pipeline radial vibration collector 8 includes an adjusting outer screw tube 801 threadedly screwed into the inner screw tube 13, and an outer thread is arranged on the outer wall of the adjusting outer screw tube 801, and a displacement sensor 802 is installed on the outer end of the adjusting outer screw tube 801, and a front end test head 803 of the displacement sensor 802 passes through a central cavity arranged through the center of the adjusting outer screw tube 801 and passes out into the through cavity 12, and each front end test head 803 is used to abut the outer wall of the straight pipe 1, and when the straight pipe 1 undergoes radial displacement, the front end test head 803 at the corresponding position can measure its displacement parameters and feed back to the external controller through signal transmission.

[0058] When installing the pipeline radial vibration collector 8, the displacement sensor 802 and the front end test head 803 installed thereon can be extended to the position inside the through cavity 12 by screwing and adjusting the outer screw tube 801, so that the position of each front end test head 803 can be adjusted according to the current position of the straight pipe 1, thereby achieving the purpose of initial position zeroing and ensuring the accuracy of the test results in subsequent tests.

[0059] The initial position of the displacement sensor 802 at the current position can be adjusted by screwing the position-adjusting outer screw tube 801. Each displacement sensor 802 uses a built-in spring displacement sensor 802, which plays a supporting role in an idle state and plays a role in collecting vibration information when the straight pipe 1 vibrates.

[0060] In any of the above schemes, it is preferred that the pipeline axial displacement collector 9 includes a horizontal side seat 901 fixedly mounted on one side of the connecting seat 7, a U-shaped mounting frame 902 is arranged above the horizontal side seat 901, and a roller displacement sensor 903 is installed in the U-shaped mounting frame 902, the top of the roller displacement sensor 903 abuts against the bottom of the outer wall of the straight pipe 1, and two vertical guide rods 904 are fixed at intervals at the bottom of the U-shaped mounting frame 902, and the lower end of each of the vertical guide rods 904 is movable through the through hole on the horizontal side seat 901 and extends to the bottom thereof, and support springs 905 are respectively sleeved on the outer walls of each of the vertical guide rods 904 between the U-shaped mounting frame 902 and the horizontal side seat 901, and the top of each of the support springs 905 is mounted on the bottom of the U-shaped mounting frame 902, and the top of each of the support springs 905 is mounted on the top of the horizontal side seat 901.

[0061] The pipeline axial displacement collector 9 relies on the vertical guide rod 904 to achieve the purpose of vertical limit guiding, and relies on the various support springs 905 on the top to achieve the purpose of elastic support; under the action of the support springs 905, the roller displacement sensor 903 on the top can maintain friction against the bottom of the straight pipe 1 above it, so when the straight pipe 1 has axial displacement due to impact force, the roller displacement sensor 903 can accurately collect its displacement information and feed it back to the outside.

[0062] Embodiment 3: Compared with Embodiment 2, this embodiment is different in that it also includes the following technical features:

[0063] In any of the above schemes, it is preferred that the pipeline support and positioning assembly includes a right-angle frame 14 fixedly installed on the top of the existing test bench, and the right-angle frame 14 is integrally formed by a first straight-side frame 1401 and a second straight-side frame 1402 which are perpendicular to each other. A first lead screw 15 is installed inside the first straight-side frame 1401, and both ends of the first lead screw 15 are movable to the outside of the first straight-side frame 1401. A second lead screw 16 is installed inside the second straight-side frame 1402, and both ends of the second lead screw 16 are movable to the outside of the second straight-side frame 1402. A single-power two-way driving mechanism is arranged at the connected end of the first straight-side frame 1401 and the second straight-side frame 1402, and the two output ends of the single-power two-way driving mechanism are respectively used to connect the first lead screw 15 and the second lead screw 16, and sliding seats 6 are respectively screwed on the outer side walls of the first lead screw 15 and the outer side walls of the second lead screw 16, and the two sides of the sliding seat 6 are respectively abutted against the inner side walls of the right-angle frame 14.

[0064] The pipeline support adjustment component mainly adopts the linkage of the first screw 15 and the second screw 16 which are perpendicular to each other to realize the adjustment of the sliding seat 6 above them respectively. When the sliding seat 6 is adjusted and translated, it can drive the displacement of the pipeline support test unit installed on the top thereof, thereby simulating the vibration and safe operation of the pipeline during the simulated operation after the support parts are installed at different positions of the pipeline.

[0065] In any of the above schemes, it is preferred that the single-power bidirectional drive mechanism includes a gear cavity 17 arranged at a right-angled portion of the right-angle frame 14, and four first bevel gears 18, second bevel gears 19, third bevel gears 20, and fourth bevel gears 21 are uniformly distributed along the circumferential direction and meshed with each other are arranged inside the gear cavity 17, the gear shaft of the first bevel gear 18 movably passes through the mounting hole on the inner wall of the gear cavity 17 and extends to the outside thereof and is connected to the drive motor 22, the drive motor 22 is fixed on the outer wall of the right-angle frame 14, the gear shaft of the second bevel gear 19 is coaxially fixedly connected to the end of the first lead screw 15, the gear shaft of the third bevel gear 20 is coaxially fixedly connected to the end of the second lead screw 16, and the gear shaft of the fourth bevel gear 21 movably passes through the outside of the gear cavity 17; wherein the first bevel gear 18 is a driving gear, the second bevel gear 19, the third bevel gear 20, and the fourth bevel gear 21 are all passive gears, and a gear box cover 23 is bolted and installed on the top of the gear cavity 17.

[0066] It should be noted that: relying on a driving motor 22 in the single-power bidirectional driving mechanism, it is possible to simultaneously drive the first bevel gear 18, the second bevel gear 19, the third bevel gear 20, and the fourth bevel gear 21 to cooperate in operation, thereby further driving the corresponding first lead screw 15 and the second lead screw 16 to follow the operation. During the operation of the first lead screw 15 and the second lead screw 16, the pipeline support test units on the top of each sliding seat 6 are simultaneously driven to shift, thereby completing the support of different positions of the straight pipe 1 and the subsequent testing of the vibration conditions of the pipeline under the simulated operation state.

[0067] Specific working principle: Before use, the device completes the installation of each pipeline of the pressure pipeline unit to be tested in advance, and turns on the power after installation. The device is mainly used to complete the simulated installation and positioning of the high-flow rate pressure pipeline unit to be tested.

[0068] After installation, the pipeline can be supported by two pipeline support and adjustment components; after installation, the pressure pipeline unit is connected to the external pipeline, and the variable control pump 3 and flow control valve 4 are used to adjust the current liquid flow rate and pressure changes inside the pipeline; thereby simulating various working conditions inside the pipeline in actual operation.

[0069] Whenever the pipeline support adjustment component is adjusted to a test position, it maintains its stable positioning, while maintaining the pipeline conveying liquid and maintaining the set time. During the operation, the pipeline support test unit collects the vibration information of the current pipeline in real time, so that the vibration of the pipeline under the current simulated operating conditions can be effectively collected, and the subsequent analysis of the safety of the pipeline under the vibration condition is convenient. Specifically, the individual adjustment of each pipeline radial vibration collector 8 can better ensure its flexibility when adjusting the displacement, and effectively ensure that each pipeline radial vibration collector 8 can achieve the purpose of accurately pressing against the outer wall of the straight pipe 1. When the pipeline radial vibration collector 8 is installed, the displacement sensor 802 and the front end test head 803 installed thereon can be extended to the position inside the through cavity 12 by screwing the adjustment outer screw 801, so as to adjust the position of each front end test head 803 according to the current position of the straight pipe 1, so as to achieve the purpose of zeroing the initial position and ensure the accuracy of the test results in subsequent tests.

[0070] In addition, the pipeline axial displacement collector 9 relies on the vertical guide rod 904 to achieve the purpose of vertical limit guiding, and relies on the various support springs 905 on the top to achieve the purpose of elastic support; under the action of the support spring 905, the roller displacement sensor 903 on the top can maintain friction against the bottom of the straight pipe 1 above it, so when the straight pipe 1 undergoes axial displacement due to impact force, the roller displacement sensor 903 can accurately collect its displacement information and feed it back to the outside.

[0071] From the above, it can be seen that the vibration balance test device for the high-flow pressure pipeline unit in the present invention can be used for the early installation of the high-flow pressure pipeline, which involves the collection of vibration conditions during the simulated operation of the pipeline under different installation positions, and effectively provide an effective basis for the subsequent actual installation of the pipeline; after completing the installation of the straight pipe 1, the curved pipe, the variable control pump 3, and the flow regulating valve 4 of the high-flow pressure pipeline unit, the two pipeline support test units can be used to support the middle part of the entire pipeline, effectively simulating the effect of supporting the pipeline after installation; the displacement of the pipeline support test unit is achieved by controlling the pipeline support adjustment component, thereby completing the simulation of different support installation positions of the pipeline, and completing the vibration test at the same time, ensuring the comprehensiveness of the simulation of the actual installation position and the different effects of different installation positions on the stable operation of the pipeline.

[0072] The pipeline support adjustment component adopts a single power structure, which can effectively realize the synchronous adjustment of the position of the pipeline support test unit that supports the bottom of the straight pipe 1 on both sides of the key right-angle bend 2, effectively improve the adjustment efficiency and maintain the relative synchronization of the pipeline support test units on both sides during adjustment, which is helpful to provide a reference basis for the subsequent actual installation of the current pipeline through the collection and subsequent analysis of vibration information after the pipeline simulation operation, thereby improving the subsequent construction efficiency and effect; while supporting the straight pipe 1, it can maintain the collection of vibration information of the straight pipe 1 under the operating state of the pipeline under different flow rates and liquid pressure conditions; at the same time, by adjusting the position of the pipeline support test unit, it is possible to find the coordinate position that can minimize the vibration, thereby providing a reference basis for the subsequent actual installation; when collecting vibration information of the straight pipe 1, it can not only collect radial vibration, but also collect axial displacement caused by the flow velocity pressure shock inside the pipeline, effectively simulating the real-time acquisition of vibration and displacement conditions under real operating conditions, so as to better analyze the use effect and safety analysis and simulation of large flow pressure pipelines after subsequent actual installation.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. For those skilled in the art, any replacement improvements or changes made to the implementation methods of the present invention fall within the protection scope of the present invention.

[0074] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A vibration balance test device for a high flow rate pressure pipeline unit, characterized in that: It comprises a pipeline support positioning assembly horizontally mounted on the top of an existing test bench, pipeline support test units are respectively mounted on the top of each sliding seat on the pipeline support positioning assembly, both sides of the middle curved pipe section of the pressure pipeline unit to be tested respectively pass through the pipeline support test units at their corresponding positions, the feed end and the discharge end of the pressure pipeline unit are respectively connected to external matching pipelines, when the liquid flow parameters of the liquid medium inside the pressure pipeline unit change, each of the pipeline support test units cooperates to realize the collection of the current external vibration parameters of the pressure pipeline unit, and the pipeline support positioning assembly drives each of the pipeline support test units to shift through its own operation; The pipeline support test unit comprises a vertical electric cylinder arranged vertically, a connecting seat is fixedly installed on the top of the piston rod of the vertical electric cylinder, and a pipeline restrainer is installed on the top of the connecting seat; a through cavity for the straight pipe to pass through is formed between the upper semicircular holder and the lower semicircular holder of the pipeline restrainer, inner spiral tubes are fixedly arranged at intervals on the inner side walls of the upper semicircular holder and the lower semicircular holder, and a pipeline radial vibration collector is screwed in the tube cavity of each inner spiral tube; The pipeline radial vibration collector comprises an adjustment outer spiral tube threadedly screwed into the inner spiral tube, a displacement sensor is installed at the outer end of the adjustment outer spiral tube, a front end test head of the displacement sensor passes through a central cavity provided through the center of the adjustment outer spiral tube and passes out into the through cavity, each front end test head is used to abut against the outer side wall of the straight pipe, when the straight pipe undergoes radial displacement, the front end test head at the corresponding position can measure its displacement parameter and feed back to the external controller through signal transmission; screwing the adjustment outer spiral tube can realize the adjustment of the initial position of the displacement sensor; the displacement sensor plays a supporting role in an idle state, and plays a role in collecting vibration information when the straight pipe vibrates; The pipeline axial displacement collector includes a horizontal side seat fixedly mounted on one side of the connecting seat, a U-shaped mounting frame is arranged above the horizontal side seat, a roller displacement sensor is installed in the U-shaped mounting frame, the top of the roller displacement sensor abuts against the bottom of the outer wall of the straight pipe, two vertical guide rods are fixed at intervals at the bottom of the U-shaped mounting frame, the lower end of each vertical guide rod is movable through the through hole on the horizontal side seat and extends below it, support springs are respectively sleeved on the outer wall of each vertical guide rod between the U-shaped mounting frame and the horizontal side seat, the top of each support spring is installed at the bottom of the U-shaped mounting frame, and the top of each support spring is installed at the top of the horizontal side seat; The pipeline support and positioning assembly comprises a right-angle frame, which is formed integrally by a first straight-side frame and a second straight-side frame perpendicular to each other; a first lead screw is installed inside the first straight-side frame, and both ends of the first lead screw are movably extended to the outside of the first straight-side frame; a second lead screw is installed inside the second straight-side frame, and both ends of the second lead screw are movably extended to the outside of the second straight-side frame; a single-power bidirectional driving mechanism is arranged at the connecting end of the first straight-side frame and the second straight-side frame; sliding seats are respectively screwed on the outer side wall of the first lead screw and the outer side wall of the second lead screw, and both sides of the sliding seat are respectively abutted against the inner side wall of the right-angle frame; The single-power bidirectional driving mechanism includes a gear cavity arranged at a right-angle position of the right-angle frame, and four first bevel gears, second bevel gears, third bevel gears, and fourth bevel gears are evenly distributed along the circumferential direction and meshed with each other. The gear shaft of the first bevel gear moves through the mounting hole on the inner wall of the gear cavity and extends to the outside thereof to be connected with the driving motor, and the driving motor is fixed on the outer wall of the right-angle frame, the gear shaft of the second bevel gear is coaxially fixedly connected to the end of the first lead screw, the gear shaft of the third bevel gear is coaxially fixedly connected to the end of the second lead screw, and the gear shaft of the fourth bevel gear moves through to the outside of the gear cavity.

2. A vibration balance test device for a high flow rate pressure pipeline unit according to claim 1, characterized in that: The pressure pipeline unit includes a plurality of straight pipes, adjacent straight pipes are connected by right-angle bends and the connection parts are sealed, the straight pipes are connected to the interiors of adjacent right-angle bends, a variable control pump is installed on the straight pipe at the feed end, and a flow regulating valve is installed on the straight pipe at the discharge end, and the flow regulating valve cooperates with the variable control pump to realize the regulation of liquid flow parameters inside the pressure pipeline unit.

3. A vibration balance testing device for a high flow rate pressure pipeline unit according to claim 2, characterized in that: The bottom of the vertical electric cylinder is fixedly mounted on the top of the sliding seat at its corresponding position. The pipe restraint is used to be sleeved on the outside of the straight pipe at the current position. A plurality of pipe radial vibration collectors are evenly spaced around the pipe restraint along its circumference, and pipe axial displacement collectors are symmetrically installed on the front and rear sides of the pipe restraint.

4. A vibration balance test device for a high flow rate pressure pipeline unit according to claim 3, characterized in that: The initial position of each pipeline radial vibration collector can be adjusted individually.

5. A vibration balance test device for a high flow rate pressure pipeline unit according to claim 4, characterized in that: The pipeline restraint includes the lower semicircular holder fixedly mounted on the top of the connecting seat, the upper semicircular holder is detachably bolted and fixed on the top of the lower semicircular holder, and internal threads are respectively arranged in the tube cavities of the internal spiral tubes.

6. A vibration balance test device for a high flow rate pressure pipeline unit according to claim 5, characterized in that: The inner end of each pipeline radial vibration collector is arranged along the radial direction of the straight pipe and extends into the through cavity to press against the outer side wall of the current straight pipe.

7. A vibration balance testing device for a high flow rate pressure pipeline unit according to claim 6, characterized in that: The top of the pipeline axial displacement collector is pressed against the bottom outer wall of the straight pipe and when the straight pipe has axial displacement, the pipeline axial displacement collector can collect displacement parameters of the straight pipe.

8. The vibration balance test device for a high flow rate pressure pipeline unit according to claim 7, characterized in that: The angle between the two ends of the right-angle elbow to be tested and the straight pipe is a right angle; the center point of the right-angle elbow is the scale line zero point, and X-axis coordinate scales and Y-axis coordinate scales are set along the extension direction of the straight pipe on both sides of the right-angle elbow.

9. A vibration balance testing device for a high flow rate pressure pipeline unit according to claim 8, characterized in that: The coordinate scale of the pressure pipeline unit needs to be recorded after each positioning, and the liquid flow adjustment of the liquid medium inside the pressure pipeline unit needs to be completed at least N times under the current position coordinates, and the vibration information collected by the current pressure pipeline unit after each adjustment needs to be recorded; wherein the vibration information includes the vibration amplitude and vibration frequency of the current straight pipe.

10. A vibration balance testing device for a high flow rate pressure pipeline unit according to claim 9, characterized in that: The pipeline support adjustment component is used to control the translational displacement of the two pressure pipeline units along the X-axis coordinate scale and the Y-axis coordinate scale respectively.

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