Pipeline pressure resistance, alternating bending, vibration and impact comprehensive test equipment

Abstract

The utility model provides comprehensive test equipment for pressure resistance, alternating bending, vibration and impact of a pipeline. The comprehensive test equipment comprises a sample table and a butt-clamping follow-up sample seat, compared with the prior art, the sample holder has the advantages that through the matched arrangement of the butt-clamping follow-up sample holder, the sample holder body, the follow-up shaft, the manual clamping wheel, the clamping wheels, the follow-up bearing, the positive and negative screw rod and the nuts, the manual clamping wheel is rotated, the positive and negative screw rod rotates, the nuts are driven to be close to each other, the clamping wheels are close to each other, samples are clamped, and the sample holder can adapt to clamping and fixing of samples of different sizes; the adaptability is high, the device can be used for positioning and detecting samples with different sizes, and the use is flexible; according to the testing machine, a servo control system is adopted, axial reciprocating vibration displacement can be achieved, the vibration frequency range is 0-20 Hz, and the amplitude is adjustable in the range of-5 mm to + 5 mm. A plunger type high-pressure pump or a high-pressure air pump is adopted to provide stable pressure, and the pressure efficiency is high and the stability is good. The device is wide in measurement range, high in precision, flexible and convenient to use and fatigue-resistant.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline performance detection technical field, especially a pipeline pressure resistance, alternating bending, vibration and impact comprehensive test equipment. BACKGROUND

[0002] In order to detect the anti-seismic performance and the anti-internal pressure impact performance of the water pipeline in the earthquake or daily use process in the building, the relevant standard requires that the connecting performance test is carried out to the pipe fitting. The connecting performance test includes pressure resistance test, negative pressure test, alternating bending test, vibration strain test and pressure impact (fluctuation) test. In the above test process, the pipe fitting should have no leakage, shedding and plastic deformation. The project develops a comprehensive test equipment for carrying out the above test to the pipe fitting.

[0003] The pipe fitting experimental equipment in the prior art has a detachable positioning mold for positioning a single size sample. When different size samples need to be replaced, the corresponding positioning mold needs to be replaced. It is very troublesome to disassemble and assemble frequently, and the use is not flexible enough. Therefore, a new pipeline pressure resistance, alternating bending, vibration and impact comprehensive test equipment is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at solving at least one of the technical defects.

[0005] Therefore, one purpose of the utility model is to provide a pipeline pressure resistance, alternating bending, vibration and impact comprehensive test equipment to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0006] In order to achieve the above purpose, an embodiment of the utility model provides a pipeline pressure resistance, alternating bending, vibration and impact comprehensive test equipment, which comprises a sample table, a clamping sample seat, a motor frame, a servo motor, an eccentric wheel, a linear bearing seat, a force transmission rod, a water inlet valve, a pressure sensor, an exhaust valve and a sample.

[0007] The inside of the linear bearing seat is movably connected with the force transmission rod, and the end of the force transmission rod is movably connected with the eccentric wheel.

[0008] The sample is clamped above the clamping sample seat, and the water inlet valve is installed at one end of the sample.

[0009] The pressure sensor is installed at one end of the sample.

[0010] The exhaust valve is installed on the other side of the sample, and the end of the force transmission rod intermittently contacts the middle segment of the sample.

[0011] Preferably, according to any of the above solutions, the sample stage is welded with the motor frame.

[0012] By adopting the technical scheme, the device is specially used for the connection performance test of the pipeline.

[0013] Preferably, according to any of the above solutions, the pair of clamping sample seats are composed of a sample seat body, a follow-up shaft, a manual clamping wheel, a clamping wheel, a follow-up bearing, a forward and reverse screw rod and a nut, the inside of the sample seat body is movably connected with the forward and reverse screw rod, the end of the forward and reverse screw rod is fixedly connected with the manual clamping wheel, the outer surface of the forward and reverse screw rod is threadedly connected with the nut, the top of the nut is fixedly connected with the clamping wheel, the bottom of the sample seat body is provided with the follow-up shaft, the top surface of the clamping wheel is provided with the follow-up bearing, and the clamping wheel is movably connected above the sample seat body.

[0014] By adopting the technical scheme, the manual clamping wheel is rotated, the forward and reverse screw rod is rotated, the nut is driven to move close to each other, the clamping wheels are moved close to each other, and the sample is clamped and fixed, so that the device is suitable for clamping and fixing samples of different sizes and has high adaptability.

[0015] Preferably, according to any of the above solutions, the servo motor is vertically installed, and the transmission rod is horizontally arranged.

[0016] By adopting the technical scheme, the output end of the servo motor drives the eccentric wheel to rotate, the eccentric wheel drives the transmission rod to reciprocatingly move in the linear bearing seat, axial reciprocating vibration displacement is realized, the end of the transmission rod reciprocatingly vibrates and impacts the middle segment of the sample, so that the performance of the pipeline is detected. The servo control system is adopted in the test machine, axial reciprocating vibration displacement can be realized, the vibration frequency range is 0Hz-20Hz, and the vibration amplitude can be adjusted in the range of -5mm-+5mm. The plunger type high-pressure pump or the high-pressure air pump is adopted to provide stable pressure, and the pressure efficiency is high and the stability is good. The measurement range is wide, the precision is high, the use is flexible and convenient, and fatigue resistance is good.

[0017] Preferably, according to any of the above solutions, the sample is horizontally arranged, and the sample is clamped by the clamping wheels.

[0018] Preferably, according to any of the above solutions, the water inlet valve and the exhaust valve are in communication with the inside of the sample.

[0019] Compared with the prior art, the device has the advantages and beneficial effects that:

[0020] 1. The pipeline pressure, alternating bending, vibration and impact comprehensive test equipment, through the cooperation of the clamping sample seat, the sample seat body, the follow-up shaft, the manual clamping wheel, the clamping wheel, the follow-up bearing, the forward and reverse screw rod and the nut, rotating the manual clamping wheel, rotating the forward and reverse screw rod, driving the nut to move close to each other, the clamping wheel moves close to each other, and clamps the sample, which can adapt to different sizes of sample clamping and fixing, and has strong adaptability.

[0021] 2. The pipeline pressure, alternating bending, vibration and impact comprehensive test equipment, the output end of the servo motor drives the eccentric wheel to rotate, the eccentric wheel drives the transmission rod to move back and forth in the linear bearing seat, realizes axial reciprocating vibration displacement, and the end of the transmission rod reciprocating vibration impact displacement to the middle segment of the sample, so as to detect the performance of the pipeline. The test machine adopts a servo control system, which can realize axial reciprocating vibration displacement, vibration frequency range 0Hz~20Hz, vibration amplitude-5mm~+5mm range adjustable. A plunger type high pressure pump or a high pressure air pump is used to provide stable pressure, which has high pressure efficiency and good stability. The measuring range is wide, the precision is high, the use is flexible and convenient, and the fatigue resistance is good.

[0022] The additional aspects and advantages of the present application will be partially given in the following description, some will become apparent from the following description, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0025] Fig. 2 It is a schematic diagram of the three-dimensional structure of the clamping follow-up sample seat of the present application;

[0026] Fig. 3 It is a schematic diagram of the internal structure of the clamping follow-up sample seat of the present application.

[0027] In the figure: 1-sample table, 2-clamping follow-up sample seat, 201-sample seat body, 202-follow-up shaft, 203-manual clamping wheel, 204-clamping wheel, 205-follow-up bearing, 206-forward and reverse screw rod, 207-nut, 3-motor frame, 4-servo motor, 5-eccentric wheel, 6-linear bearing seat, 7-sample, 8-water inlet valve, 9-pressure sensor, 10-exhaust valve. DETAILED DESCRIPTION

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] like Figs. 1-3 As shown, this comprehensive testing equipment for pipeline pressure resistance, alternating bending, vibration and impact includes a sample stage 1 and a clamp-and-follow sample holder 2. The clamp-and-follow sample holder 2 is installed at both ends of the top surface of the sample stage 1. A motor frame 3 is fixedly connected to one side of the sample stage 1. A servo motor 4 is installed on the bottom surface of the motor frame 3. An eccentric wheel 5 is fixedly connected to the output end of the servo motor 4. A linear bearing seat 6 is installed on the top surface of the motor frame 3.

[0031] A force transmission rod 11 is movably connected inside the linear bearing housing 6, and the end of the force transmission rod 11 is movably connected to the eccentric wheel 5.

[0032] The sample 7 is held in the upper clamp of the clamp-following sample holder 2, and a water inlet valve 8 is installed at one end of the sample 7;

[0033] A pressure sensor 9 is installed at one end of sample 7;

[0034] An exhaust valve 10 is installed on the other side of sample 7, and the end of the force transmission rod 11 is in intermittent contact with the middle section of sample 7.

[0035] Embodiment 1: the sample table 1 is welded with the motor frame 3. The clamping follow-up sample seat 2 is composed of a sample seat body 201, a follow-up shaft 202, a manual clamping wheel 203, a clamping wheel 204, a follow-up bearing 205, a forward and reverse screw rod 206 and a nut 207, wherein the inside of the sample seat body 201 is movably connected with the forward and reverse screw rod 206, the end of the forward and reverse screw rod 206 is fixedly connected with the manual clamping wheel 203, the outer surface of the forward and reverse screw rod 206 is threadedly connected with the nut 207, the top of the nut 207 is fixedly connected with the clamping wheel 204, the bottom of the sample seat body 202 is provided with the follow-up shaft 202, the top surface of the clamping wheel 204 is provided with the follow-up bearing 205, and the clamping wheel 204 is movably connected above the sample seat body 201. The manual clamping wheel 203 is rotated, the forward and reverse screw rod 206 is rotated, the nut 207 is driven to move close to each other, the clamping wheel 204 is driven to move close to each other, and the sample 7 is clamped.

[0036] Embodiment 2: the servo motor 4 is vertically installed, and the transmission rod 11 is transversely arranged. The water inlet valve 8 and the exhaust valve 10 are connected with the inside of the sample 7. The sample 7 is transversely arranged and clamped by the clamping wheel 204.

[0037] The device adopts touch screen control, and the man-machine operation interface is friendly. The test machine is provided with an overload protection function, and damage of the test machine caused by misoperation can be prevented.

[0038] The working principle of the device is as follows:

[0039] Pressure resistance test steps

[0040] 1. Fill the water tank with water to below the upper limit of the water level; install the test piece;

[0041] 2. Power on the system, and the touch screen displays a test selection interface,

[0042] 3. Click the "pressure resistance test" button, and the touch screen displays a pressure resistance test interface;

[0043] 4. Input "set pressure" and "set time length" according to test requirements; if necessary, click the "time length zero reset" button, and the "test time length" is zeroed;

[0044] 5. If the "water return valve is open", the button can be clicked to close the water return valve, and "water return valve is closed" is displayed; in a non-test state, the button can be clicked to open and close the water return electromagnetic valve;

[0045] 6. Click the "water pump is closed" button to start the water pump, and "water pump is open" is displayed; in a non-test state, the button can be clicked to open and close the water pump;

[0046] 7. Manually adjust the pressure regulating valve of the water pump until the "real-time pressure" displayed is greater than the "set pressure", and then the test can be started;

[0047] 8. Press the "test start" button for more than 3 seconds, and the test starts;

[0048] 9. After the test starts, the test button becomes "test in progress" and flashes, the "real-time pressure" becomes green, the actual pressure curve is displayed on the left side, and the "test duration" starts to count up. When the "set duration" is reached, the test stops automatically; or the lower limit of the water tank alarms, and the test stops automatically. At this time, the "water level normal" in the upper left corner becomes "water level lower limit", and the buzzer flashes. Click "cancel alarm" to cancel the buzzer flashing. During the test, you can also click the "test stop" button to pop up a dialog box. After confirmation, the test stops;

[0049] 10. After the test ends, the test duration stops counting up. If it is equal to the set duration, it means that the test timing is over, and it ends automatically. At this time, you must "clear the duration" or you cannot perform subsequent actions.

[0050] 11. You can click the "history record" button to enter the history record page.

[0051] Alternating bending test steps

[0052] 1. Fill the water tank with water to below the upper water level limit; install the test piece;

[0053] 2. Click the "alternating bending" button, and the touch screen displays the alternating bending test interface;

[0054] 3. Enter the "set pressure" and "set number" according to the test requirements. If necessary, click the "number clear" button to clear the "test number";

[0055] 4. Click the "water pump off" button to turn on the water pump and display "water pump on". You can click this button to turn on or off the water pump;

[0056] 5. Click "manual operation" to enter the manual operation interface of the alternating bending test. Click the "manual operation" button to start the vibration. This button becomes "manual operation in progress" and flashes. Click this button again or click the "manual stop" button to stop the vibration. Click the "fast / slow" knob to switch between fast and slow manual operation. The vibration frequency displays the actual vibration frequency, which is 5 Hz for fast and 1 Hz for slow. Click the "back" button to return to the test interface.

[0057] 6. Manually adjust the pressure regulating valve of the water pump until the "real-time pressure" is greater than the "set pressure" before starting the test;

[0058] 7. Press the "test start" button for more than 3 seconds to start the test;

[0059] 8、After the test starts, the water pump can be turned off, the test button becomes "test in progress" and flashes, "real-time pressure" becomes green, "vibration frequency" displays the actual vibration frequency 10Hz, the left side displays the actual pressure curve, "test times" starts to count up, and when it reaches "set times", the test stops automatically; or the lower limit of the water tank alarms, which will also automatically stop the test, at this time, the "water level normal" in the upper left corner becomes "water level lower limit", and the buzzer flashes, and clicking "cancel alarm" can cancel the buzzer flashing. During the test, the "test stop" button can also be clicked to pop up a dialog box, and after confirmation, the test stops;

[0060] 9、After the test is completed, the test times stop counting up; if it equals the set duration, it means that the test times are up, and it automatically ends, at this time, "times zero" must be clicked, otherwise subsequent actions cannot be performed.

[0061] 10、The "history" button can be clicked to enter the history page, and like the pressure test, the four tests are the same history page.

[0062] Vibration strain test step 11, fill the water tank with water to below the upper limit of the water level; install the test piece;

[0063] 12、Click the "vibration strain" button, and the touch screen displays the vibration strain test interface

[0064] 13、According to the test requirements, input "set pressure" and "set times"; if necessary, click the "times zero" button to clear the "test times";

[0065] 14、Click the "water pump off" button to turn on the water pump and display "water pump on"; the water pump can be turned on and off by clicking this button;

[0066] 15、Click "manual operation" to enter the manual operation interface of the vibration strain test; click the "manual operation" button to start vibration, and the button becomes "manual operation in progress" and flashes; click this button again or click the "manual stop" button to stop vibration; click the "fast / slow" knob to switch between fast and slow manual operation; the vibration frequency displays the actual vibration frequency, which is 10Hz for fast and 2Hz for slow; click the "back" button to return to the test interface.

[0067] 16、Manually adjust the pressure regulating valve of the water pump until the "real-time pressure" displays a value greater than the "set pressure", and then the test can start;

[0068] 17、Hold down the "test start" button for more than 3 seconds to start the test;

[0069] 18、After the test starts, the water pump can be turned off, the test button becomes "test in progress" and flashes, "real-time pressure" becomes green, "vibration frequency" displays the actual vibration frequency 20Hz, the left side displays the actual pressure curve, "test times" starts to count up, and when it reaches "set times", the test stops automatically; or the lower limit of the water tank alarms, which will also automatically stop the test, at this time, the "water level normal" in the upper left corner becomes "water level lower limit", and the buzzer flashes, and clicking "cancel alarm" can cancel the buzzer flashing. During the test, the "test stop" button can also be clicked to pop up a dialog box, and after confirmation, the test stops;

[0070] 19、After the test is completed, the test times stop counting up; if it equals the set duration, it means that the test times are up, and it automatically ends, at this time, "times clear" must be clicked, otherwise subsequent actions cannot be performed.

[0071] 20、The "history" button can be clicked to enter the history page, and like the pressure test, the four tests are the same history page.

[0072] Pressure impact (fluctuation) test steps 21, fill the water tank with water to below the upper limit of the water level; install the test piece;

[0073] 22、Click the "pressure impact" button, and the touch screen displays the pressure impact test interface;

[0074] 23、According to the test requirements, input "set pressure" and "set times"; if necessary, click the "times clear" button to clear the "test times";

[0075] 24、If the "backwater valve is open", click this button to close the backwater valve and display "backwater valve is closed"; in a non-test state, click this button to open and close the backwater electromagnetic valve;

[0076] 25、Click the "water pump is off" button to turn on the water pump and display "water pump is on"; in a non-test state, click this button to turn on and off the water pump;

[0077] 26、Manually adjust the pressure regulating valve of the water pump until the "real-time pressure" display is greater than the "set pressure" before starting the test;

[0078] 27、Hold down the "test start" button for more than 3 seconds to start the test;

[0079] 28、After the test starts, the test button becomes "test in progress" and flashes, "real-time pressure" becomes green, the left side displays the actual pressure curve, "test times" starts to count up, until "set times", the test is automatically stopped; or the lower limit position of the water tank alarms, the test is also automatically stopped, at this time, the "water level normal" in the upper left corner becomes "water level lower limit", and the buzzer flashes, clicking "cancel alarm" can cancel the buzzer flash. During the test, the "test stop" button can also be clicked, a dialog box is popped up, and after confirmation, the test is stopped;

[0080] 29、After the test is completed, the test times stop counting up; if it is equal to the set time, it indicates that the test times are up, and it is automatically ended, at this time, the "times clear" must be performed, otherwise subsequent actions cannot be performed.

[0081] 30、The "history record" button can be clicked to enter the history record page, and the four test chambers are the same as the pressure test.

[0082] Compared with the prior art, the utility model has the following beneficial effects relative to the prior art:

[0083] 1、The pipeline pressure, alternating bending, vibration and impact comprehensive test equipment, through the cooperation of the sample seat 2, the sample seat body 201, the follow-up shaft 202, the manual clamping wheel 203, the clamping wheel 204, the follow-up bearing 205, the forward and reverse screw rod 206 and the nut 207, the manual clamping wheel 203 is rotated, the forward and reverse screw rod 206 is rotated, the nut 207 is driven to move close to each other, the clamping wheel 204 is moved close to each other, and the sample 7 is clamped, so that different sizes of samples 7 can be clamped and fixed, the adaptability is high, the device can position and detect different sizes of samples 7, and use is flexible.

[0084] 2、The pipeline pressure, alternating bending, vibration and impact comprehensive test equipment, the output end of the servo motor 4 drives the eccentric wheel 5 to rotate, the eccentric wheel 5 drives the transmission rod 11 to reciprocate in the linear bearing seat 6, axial reciprocating vibration displacement is realized, the end of the transmission rod 11 reciprocating vibration impact displacement is carried out on the middle segment of the sample 7, so that the performance of the pipeline is detected. The test machine adopts a servo control system, axial reciprocating vibration displacement can be realized, the vibration frequency range is 0Hz~20Hz, the vibration amplitude is -5mm~+5mm, and the range can be adjusted. A plunger type high-pressure pump or a high-pressure air pump is used to provide stable pressure, the pressure efficiency is high and the stability is good. The measurement range is wide, the precision is high, use is flexible and convenient, and fatigue resistance is good.

Claims

1. A pipeline pressure, alternating bending, vibration and impact combined test equipment, characterized in that, Including sample table (1), the sample seat (2) of clamping follow-up, the top surface of the sample table (1) is installed at both ends clamping follow-up sample seat (2), one side of the sample table (1) is fixedly connected with motor frame (3), the bottom surface of the motor frame (3) is installed with servo motor (4), the output end of the servo motor (4) is fixedly connected with eccentric wheel (5), the top surface of the motor frame (3) is installed with linear bearing seat (6);The inside of the linear bearing seat (6) is movably connected with force transmission rod (11), and the end of the force transmission rod (11) is movably connected with eccentric wheel (5); The sample (7) is clamped above the clamping follow-up sample seat (2), and the water inlet valve (8) is installed at one end of the sample (7);A pressure sensor (9) is installed at one end of the sample (7); The other side of the sample (7) is provided with an exhaust valve (10), and the end of the force transmission rod (11) is intermittently contacted with the middle segment of the sample (7).

2. The combined pressure, alternating bending, vibration and impact test apparatus for pipes according to claim 1, characterized in that: The sample table (1) is welded with the motor frame (3).

3. The combined pressure, alternating bending, vibration and impact test apparatus for pipes according to claim 2, characterized in that: The clamping follow-up sample seat (2) is composed of a sample seat body (201), a follow-up shaft (202), a manual clamping wheel (203), a clamping wheel (204), a follow-up bearing (205), a forward and reverse screw rod (206) and a nut (207), wherein the inside of the sample seat body (201) is movably connected with the forward and reverse screw rod (206), the end of the forward and reverse screw rod (206) is fixedly connected with the manual clamping wheel (203), the outer surface of the forward and reverse screw rod (206) is threadedly connected with the nut (207), the top of the nut (207) is fixedly connected with the clamping wheel (204), the bottom of the sample seat body (202) is provided with the follow-up shaft (202), the top surface of the clamping wheel (204) is provided with the follow-up bearing (205), and the clamping wheel (204) is movably connected above the sample seat body (201).

4. The combined pressure, alternating bending, vibration and impact test apparatus for pipes according to claim 3, characterized in that: The servo motor (4) is vertically installed, and the force transmission rod (11) is transversely arranged.

5. The combined pressure, alternating bending, vibration and impact test apparatus for pipes according to claim 4, characterized in that: The sample (7) is transversely arranged, and the sample (7) is clamped by the clamping wheel (204).

6. The combined pressure, alternating bending, vibration and impact test apparatus for pipes according to claim 5, characterized in that: The water inlet valve (8) and the exhaust valve (10) are communicated with the inside of the sample (7).

Images