CN112881216A

CN112881216A - Pressure vessel pulse fatigue equipment testing device

Info

Publication number: CN112881216A
Application number: CN202110175299.4A
Authority: CN
Inventors: 马丽娟; 王琨博; 李强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-06-01

Abstract

The invention belongs to the technical field of fatigue tests, and particularly relates to a pressure container pulse fatigue equipment testing device which comprises a test box, wherein a placing seat is arranged in the test box, a placing groove is formed in the top of the placing seat, limiting mechanisms are arranged on the inner walls of four sides of the placing groove, an oil storage box is arranged at the top of the test box, a heating block is arranged at the bottom of the oil storage box, and a temperature sensor is arranged on one side of the oil storage box. The invention can more comprehensively simulate the pressure impact of the pressure container in the working state, the temperature of the gasoline entering the pressure container is controlled to be within a certain range every time, the temperature of the gasoline entering the pressure container is more suitable for the actual situation, the experimental data is more real and reliable, the time of the pressure container changing can be automatically monitored in the experimental process, the manual long-time adherence is not needed, the experimental precision is high, and the error is low.

Description

Pressure vessel pulse fatigue equipment testing device

Technical Field

The invention relates to the technical field of fatigue tests, in particular to a pressure vessel pulse fatigue equipment testing device.

Background

Pressure containers such as a hydraulic oil tank and a diesel oil tank are widely applied to engineering machinery, are important parts for storing oil, are mainly made of steel and have a plurality of welding lines. In the actual working of the oil tank, the oil inlet/return of oil has flow difference and the temperature of the oil changes, so that the oil tank has expansion and contraction deformation, and the fatigue effect of the welding line of the oil tank is caused due to long-term repeated change. When an oil tank of an engineering machine is used, the oil tank is often cracked due to deformation of the oil tank caused by long-time contraction and expansion, and the whole machine cannot work.

In the prior art, fatigue tests are generally performed on such pressure vessels. However, the existing fatigue test device can only simulate the influence of the flow difference of inflow and outflow of liquid on the pressure vessel, neglect the influence of the frequent inflow and outflow temperature of the liquid in the vessel, and meanwhile, when the pressure vessel is tested, the error between the test result and the actual situation is larger due to poor air tightness, so that the pressure vessel pulse fatigue equipment test device is provided.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a pressure vessel pulse fatigue equipment testing device.

In order to achieve the purpose, the invention adopts the following technical scheme: the pressure vessel pulse fatigue equipment testing device comprises a test box, wherein a placing seat is arranged in the test box, a placing groove is formed in the top of the placing seat, limiting mechanisms are arranged on the inner walls of four sides of the placing groove, an oil storage box is arranged at the top of the test box, a heating block is arranged at the bottom of the oil storage box, a temperature sensor is arranged on one side of the oil storage box, an oil inlet and an oil outlet are respectively formed in two sides of the test box, an oil inlet pipe and an oil outlet pipe are respectively arranged in the oil inlet and the oil outlet, an oil conveying pump is arranged on the oil outlet pipe, a fixing sleeve is arranged at one end, close to each other, of the oil inlet pipe and the oil outlet pipe, threaded rods are respectively connected to the upper side and the lower side of the fixing sleeve in a threaded manner, a pressing plate is arranged at one end, close, advance oil pipe with the one end that goes out oil pipe and be close to each other is the circular cone end, and two the surface of circular cone end all overlaps and is equipped with sealing rubber pad, the connecting hole has been seted up on the top of proof box, install the monitoring tube on the inner wall of connecting hole, install the gaseous detector of petrol on the top inner wall of monitoring tube, the front of proof box is rotated and is installed sealing door, sealing door's surface mounting has the controller, be equipped with display screen, input button and status display lamp on the controller, the controller respectively with petroleum pump, temperature sensor, heating block, petrol gas physical examination appearance electric connection.

Preferably, the limiting mechanism comprises slide bars, springs and a fixing plate, sliding grooves are formed in the inner walls of the four sides of the placing groove, the four sliding grooves are internally provided with the slide bars in a sliding manner, the springs are sleeved on the surfaces of the four slide bars, and one ends, close to each other, of the four slide bars are respectively connected with one side of the corresponding fixing plate.

Preferably, the pressing plate is an arc-shaped plate, and the anti-skidding wear-resistant pad is laid on the concave surface of the pressing plate.

Preferably, a water inlet and a water outlet are formed in one side of the test box, a water inlet pipe and a water outlet pipe are respectively installed in the water inlet and the water outlet, the water inlet pipe and the water outlet pipe are both connected with the same water storage tank, a water pump is installed in the water inlet pipe, and the water pump is electrically connected with the controller.

Preferably, the inlet tube with all install the solenoid valve in the outlet pipe, the solenoid valve with controller electric connection.

Preferably, the top of the monitoring pipe is provided with an air outlet, and the air outlet is connected with a sealing plug in a threaded manner.

Preferably, the connection part of the water inlet pipe and the test box and the connection part of the water outlet pipe and the test box are both sleeved with sealing rings.

Compared with the prior art, the invention has the beneficial effects that: when the device is used, the sealing door is opened, the pressure container is placed on the placing seat and is fixed through the limiting mechanism, then the ports of the oil inlet pipe and the oil outlet pipe are inserted into the oil inlet end and the oil outlet end on the pressure container, the surfaces of the conical ends arranged on the oil inlet pipe and the oil outlet pipe are attached to the inner walls of the oil inlet end and the oil outlet end, then the threaded rod is rotatably connected with the pressing plate, the threaded rod can drive the pressing plate to be attached to the surface of the corresponding oil inlet end or the corresponding oil outlet end, the oil inlet pipe and the corresponding oil inlet end and the corresponding oil outlet end on the pressure container are hermetically connected, then the sealing door is closed, water in the water storage tank is sent into the test box through the water pump and the water inlet pipe, at the moment, the air outlet hole at the top of the test box is opened for exhausting, and the air outlet hole is blocked by using the sealing plug, then the fluid in the oil storage tank is sent into pressure vessel through advancing oil pipe after heating to the certain degree through the heating piece, wherein temperature sensor monitors the temperature in the oil storage tank all the time, the temperature of guaranteeing to send into pressure vessel at every turn all keeps in the uniform temperature, then send out from an oil pipe again, accomplish fluid pulsed circulation, guarantee simultaneously that the fluid temperature that enters into pressure vessel at every turn can both reach the certain degree, under the long-time circulation effect of fluid, pressure vessel it appears revealing, inhale pressure vessel inside with water, the gaseous petrol in the pressure vessel will be discharged into the proof box this moment, it is intraductal to enter into the monitoring at last, detect through the petrol gas detector, and in time by the record, whole journey manual work need not to monitor, degree of automation is high.

The invention can more comprehensively simulate the pressure impact of the pressure container in the working state, the temperature of the gasoline entering the pressure container is controlled to be within a certain range every time, the temperature of the gasoline entering the pressure container is more suitable for the actual situation, the experimental data is more real and reliable, the time of the pressure container changing can be automatically monitored in the experimental process, the manual long-time adherence is not needed, the experimental precision is high, and the error is low.

Drawings

FIG. 1 is a schematic sectional front view of the present invention;

FIG. 2 is a schematic view of the external structure of the present invention;

FIG. 3 is an enlarged view of part A of FIG. 1;

FIG. 4 is an enlarged view of the portion B in FIG. 1;

FIG. 5 is an enlarged view of the portion C of FIG. 1;

in the figure: 1. a test chamber; 2. a placing seat; 3. a limiting mechanism; 301. a slide bar; 302. a spring; 303. a fixing plate; 4. an oil storage tank; 5. a heating block; 6. a temperature sensor; 7. an oil inlet pipe; 8. an oil outlet pipe; 9. an oil transfer pump; 10. fixing a sleeve; 11. a threaded rod; 12. pressing a plate; 13. a turntable; 14. a conical end; 15. sealing the rubber pad; 16. monitoring the pipe; 17. a gasoline gas detector; 18. a sealing door; 19. a controller; 20. a water inlet pipe; 21. a water outlet pipe; 22. a sealing plug; 23. an electromagnetic valve; 24. a water pump; 25. a water storage tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the pressure vessel impulse fatigue equipment testing device comprises a testing box 1, a placing seat 2 is installed inside the testing box 1, a placing groove is formed in the top of the placing seat 2, limiting mechanisms 3 are installed on the inner walls of four sides of the placing groove, an oil storage box 4 is installed at the top of the testing box 1, a heating block 5 is installed at the bottom of the oil storage box 4, a temperature sensor 6 is installed on one side of the oil storage box 4, an oil inlet and an oil outlet are formed in two sides of the testing box 1 respectively, an oil inlet pipe 7 and an oil outlet pipe 8 are installed in the oil inlet and the oil outlet respectively, an oil delivery pump 9 is installed on the oil outlet pipe 8, a fixing sleeve 10 is installed at one end, close to each other, of the oil inlet pipe 7 and the oil outlet pipe 8, threaded rods 11 are connected to the upper side and the lower side of the fixing sleeve 10 in a threaded manner, a, the end, close to each other, of the oil inlet pipe 7 and the oil outlet pipe 8 is a conical end 14, sealing rubber gaskets 15 are sleeved on the surfaces of the two conical ends 14, a connecting hole is formed in the top end of the test box 1, a monitoring pipe 16 is installed on the inner wall of the connecting hole, a gasoline gas detector 17 is installed on the inner wall of the top of the monitoring pipe 16, a sealing door 18 is rotatably installed on the front face of the test box 1, a controller 19 is installed on the surface of the sealing door 18, a display screen, input keys and a state display lamp are arranged on the controller 19, and the controller 19 is electrically connected with the gasoline pump 9, the temperature sensor 6, the heating block 5 and the gasoline gas detector 17 respectively;

the limiting mechanism 3 comprises slide bars 301, springs 302 and fixing plates 303, sliding grooves are formed in the inner walls of the four sides of the placing groove, the slide bars 301 are installed in the four sliding grooves in a sliding mode, the springs 302 are sleeved on the surfaces of the four slide bars 301, one ends, close to each other, of the four slide bars 301 are connected with one sides of the corresponding fixing plates 303 respectively, the pressing plate 12 is an arc-shaped plate, anti-skidding wear pads are laid on the inner concave surface of the pressing plate 12, a water inlet and a water outlet are formed in one side of the test box 1, a water inlet pipe 20 and a water outlet pipe 21 are installed in the water inlet and the water outlet respectively, the water inlet pipe 20 and the water outlet pipe 21 are connected with the same water storage tank 25, a water pump 24 is installed in the water inlet pipe 20, the water pump 24 is electrically connected with the controller 19, electromagnetic valves 23 are installed in the, the electromagnetic valve 23 is electrically connected with the controller 19, the top of the monitoring pipe 16 is provided with an air outlet, and the air outlet is in threaded connection with the sealing plug 22.

The working principle is as follows: when the device is used, the sealing door 18 is opened, the pressure container is placed on the placing seat 2 and is fixed through the limiting mechanism 3, then the ports of the oil inlet pipe 7 and the oil outlet pipe 8 are inserted into the oil inlet end and the oil outlet end of the pressure container, so that the surfaces of the conical ends arranged on the oil inlet pipe 7 and the oil outlet pipe 8 are attached to the inner walls of the oil inlet end and the oil outlet end, then the threaded rod 11 is rotated and connected with the pressing plate 12 through the rotating threaded rod 11, so that the pressing plate 12 can be driven by the threaded rod 11 to be attached to the surfaces of the corresponding oil inlet end or the corresponding oil outlet end, the oil inlet pipe 7 and the corresponding oil inlet end and the corresponding oil outlet end of the pressure container are hermetically connected, then the sealing door 18 is closed, water in the water storage tank 25 is sent into the test box 1 through the water pump 24 and the water inlet pipe 20, at the moment, the air outlet hole at the top of the test box 1 is opened for exhausting until the test box 1 and the, then the oil in the oil storage tank 4 is heated to a certain degree by the heating block 5 and then is sent into the pressure container through the oil inlet pipe 7, wherein the temperature sensor 6 always monitors the temperature in the oil storage tank 4, ensures that the temperature sent into the pressure container every time is kept within a certain temperature, then the oil is sent out from the oil outlet pipe 8, completes the pulse circulation of the oil, simultaneously ensures that the temperature of the oil entering the pressure container every time can reach a certain degree, when the pressure container leaks under the long-time circulation action of the oil, the water is sucked into the pressure container, the gasoline gas in the pressure container is discharged into the test box 1 and finally enters the monitoring pipe 16, the gasoline gas is detected by the gasoline gas detector 17 and is recorded in time, the whole process does not need manual monitoring, the automation degree is high, the invention can more comprehensively simulate the pressure impact of the pressure container in the working state, the temperature that enters into pressure vessel through control petrol for the temperature all is in the certain extent in entering into pressure vessel at every turn, and the actual conditions of laminating more makes experimental data truer and more reliable, can monitor the time that pressure vessel changes automatically simultaneously in the experimentation, need not the manual work and insists on for a long time, and the experiment precision is high, and the error is low.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Pressure vessel pulse fatigue equipment test device, including proof box (1), its characterized in that: the testing box comprises a testing box (1), a placing seat (2) is installed inside the testing box (1), a placing groove is formed in the top of the placing seat (2), limiting mechanisms (3) are installed on the inner walls of four sides of the placing groove, an oil storage box (4) is installed at the top of the testing box (1), a heating block (5) is installed at the bottom of the oil storage box (4), a temperature sensor (6) is installed on one side of the oil storage box (4), oil inlets and oil outlets are formed in two sides of the testing box (1) respectively, an oil inlet pipe (7) and an oil outlet pipe (8) are installed in the oil inlets and the oil outlet respectively, an oil delivery pump (9) is installed on the oil outlet pipe (8), a fixing sleeve (10) is installed at one end, close to each other, of the oil inlet pipe (7) and the oil outlet pipe (8), and threaded rods (11) are connected, two clamp plate (12) are all installed to threaded rod (11) one end that is close to each other, two one end that threaded rod (11) kept away from each other all is connected with carousel (13), advance oil pipe (7) with the one end that goes out oil pipe (8) and be close to each other is circular cone end (14), and two the surface of circular cone end (14) all overlaps and is equipped with sealing rubber pad (15), the connecting hole has been seted up on the top of proof box (1), install monitoring tube (16) on the inner wall of connecting hole, install petrol gas detector (17) on the top inner wall of monitoring tube (16), sealing door (18) are installed in the positive rotation of proof box (1), the surface mounting of sealing door (18) has controller (19), be equipped with display screen, input button and status display lamp on controller (19), controller (19) respectively with fuel delivery pump (9), The temperature sensor (6), the heating block (5) and the gasoline gas detector (17) are electrically connected.

2. The pressure vessel impulse fatigue device testing apparatus of claim 1, characterized in that: the limiting mechanism (3) comprises sliding rods (301), springs (302) and a fixing plate (303), sliding grooves are formed in the inner walls of the four sides of the placing groove, the sliding rods (301) are installed in the four sliding grooves in a sliding mode, the springs (302) are sleeved on the surfaces of the four sliding rods (301), and one ends, close to each other, of the four sliding rods (301) are connected with one corresponding side of the fixing plate (303) respectively.

3. The pressure vessel impulse fatigue device testing apparatus of claim 1, characterized in that: the pressing plate (12) is an arc-shaped plate, and an anti-skidding wear-resistant pad is laid on the inner concave surface of the pressing plate (12).

4. The pressure vessel impulse fatigue device testing apparatus of claim 1, characterized in that: a water inlet and a water outlet are formed in one side of the test box (1), a water inlet pipe (20) and a water outlet pipe (21) are respectively installed in the water inlet and the water outlet, and the water inlet pipe (20) and the water outlet pipe (21) are both connected with the same water storage tank (25).

5. The pressure vessel impulse fatigue device testing apparatus of claim 4, characterized in that: the water inlet pipe (20) and the water outlet pipe (21) are internally provided with electromagnetic valves (23), and the electromagnetic valves (23) are electrically connected with the controller (19).

6. The pressure vessel impulse fatigue device testing apparatus of claim 1, characterized in that: the top of the monitoring pipe (16) is provided with an air outlet, and a sealing plug (22) is connected with the air outlet in a threaded manner.

7. The pressure vessel impulse fatigue device testing apparatus of claim 5, characterized in that: the sealing ring is sleeved on the joint of the water inlet pipe (20) and the test box (1) and the joint of the water outlet pipe (21) and the test box (1).

8. The pressure vessel impulse fatigue device testing apparatus of claim 4, characterized in that: install water pump (24) in inlet tube (20), water pump (24) with controller (19) electric connection.