A pressure test system suitable for high-precision pressure control

Abstract

The present invention discloses a pressure-resistant test system suitable for high-precision pressure control, which relates to the field of valve testing technology, and comprises a shell, wherein a high-precision pressure test mechanism is arranged at the right end inside the shell, a test piece fixing mechanism is arranged at the left side of the high-precision pressure test mechanism, a traction mechanism for driving the test piece fixing mechanism to move is connected to the left side of the test piece fixing mechanism, a vibration cleaning mechanism is arranged at the bottom of the traction mechanism, and a flushing mechanism for flushing the test piece is arranged at the left end inside the shell. The present invention can realize the recovery and flushing of residual kerosene inside the test piece, and at the same time can avoid the residue of cleaning waste water inside the test piece, thereby reducing the difficulty of removing the test piece after the test is completed, avoiding the kerosene as the test medium from contaminating the test personnel or dripping into the working environment, and reducing the test cost and the difficulty of subsequent post-test disposal.

Description

Technical Field

[0001] The invention relates to the technical field of valve testing, and in particular to a pressure resistance testing system suitable for high-precision pressure control. Background Art

[0002] During use, valves are often used to control the on and off of high-pressure liquid or gas circuits. Therefore, high requirements are placed on the pressure resistance of the valves. Therefore, the valves need to be pressure tested using relevant testing equipment before they are sold.

[0003] The conventional test medium used in the valve pressure test is water containing water-soluble oil or rust inhibitor, but in order to improve the test accuracy, kerosene is also used as the test medium. When kerosene is used as the test medium for the pressure test in the prior art, after the test is completed, there will be kerosene residue inside the test piece. Subsequent operators must pay extra attention when disassembling and removing the test piece to avoid kerosene getting on the body surface or falling into the working environment to cause pollution. At the same time, since the kerosene inside the test piece cannot be easily recycled, not only is the test cost high, but the difficulty of subsequent disposal is also significantly increased.

[0004] Therefore, it is necessary to invent a pressure resistance test system suitable for high-precision pressure control to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a pressure resistance testing system suitable for high-precision pressure control, which can realize the recovery and flushing of residual kerosene inside the test piece, and at the same time avoid the residue of cleaning waste water inside the test piece, thereby reducing the difficulty of removing the test piece after the test is completed, avoiding kerosene as a test medium from contaminating the test personnel or dripping into the working environment, reducing the test cost and the difficulty of subsequent disposal after the test, so as to solve the problem proposed in the above background technology that when using kerosene as a test medium for pressure resistance testing, after the test is completed, there will be kerosene residue inside the test piece, and the subsequent operators must pay extra attention when disassembling and removing the test piece to avoid kerosene from getting on the body surface or falling into the working environment to cause pollution, and at the same time, because the kerosene inside the test piece cannot be easily recovered and processed, not only is the test cost high, but the difficulty of subsequent disposal is also significantly increased.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a withstand voltage test system suitable for high-precision pressure control, comprising a housing, a high-precision pressure test mechanism is arranged at the right end inside the housing, a test piece fixing mechanism is arranged at the left side of the high-precision pressure test mechanism, a traction mechanism for driving the test piece fixing mechanism to move is connected to the left side of the test piece fixing mechanism, a vibration cleaning mechanism is arranged at the bottom of the traction mechanism, and a flushing mechanism for flushing the test piece is arranged at the left end inside the housing;

[0007] The test piece fixing mechanism comprises a U-shaped frame, a lever and two sets of clamping components symmetrically arranged with each other;

[0008] The U-shaped frame is rotatably sleeved on the right end of the sliding shaft through a bearing, and two levers are provided. The two levers are respectively fixed on the front and back of the U-shaped frame, and the two groups of clamping components are both located on the right side of the U-shaped frame;

[0009] The vibration clearing mechanism includes two groups of vibration components parallel to each other, and any one group of the vibration components includes a beam, smooth portions are provided at both ends of the top of the beam, and a plurality of recessed portions and protruding portions are provided on the top of the beam, and the plurality of recessed portions and the plurality of protruding portions are staggered. The smooth portion at the right end of the top of the beam on the front is adjacent to the recessed portion, and the smooth portion at the right end of the top of the beam on the back is adjacent to the protruding portion.

[0010] Preferably, the high-precision pressure testing mechanism comprises two groups of symmetrically arranged pressure testing components, and a first storage tank for storing kerosene is arranged below the two groups of pressure testing components.

[0011] Preferably, any group of the pressure testing components includes a hydraulic cylinder A, a pressure regulating cylinder, a liquid inlet pipe, a liquid output pipe, a pressure gauge and an electromagnetic pressure relief valve, the hydraulic cylinder A is fixedly connected to the inner wall of the outer shell, the pressure regulating cylinder is fixedly arranged at the end of the output shaft of the hydraulic cylinder A, the liquid inlet pipe is fixedly arranged through the bottom of the pressure regulating cylinder and is connected to a transmission pump, the transmission pump is located inside the first storage tank, the liquid output pipe is fixedly arranged through the right side of the pressure regulating cylinder, and the pressure gauge and the electromagnetic pressure relief valve are both arranged on the liquid output pipe.

[0012] Preferably, a pressure regulating assembly is provided inside the pressure regulating cylinder, and the pressure regulating assembly includes a pressure regulating piston and a hydraulic cylinder B. The pressure regulating piston slides and fits inside the pressure regulating cylinder, and the hydraulic cylinder B is fixedly arranged on the outside of the pressure regulating cylinder and its output shaft is fixedly connected to the pressure regulating piston.

[0013] Preferably, the clamping assembly includes an electric push rod, a sliding arm, an annular end plate, a limit ring and a sealing ring. The electric push rod is fixedly arranged on the outside of the U-shaped frame, the sliding arm is slidably nested on the inside of the U-shaped frame and fixedly connected to the output shaft of the electric push rod, the annular end plate is fixedly arranged on the end of the sliding arm, the limit ring is fixedly arranged on the front side of the annular end plate, and two sealing rings are provided, and the two sealing rings are respectively fixedly arranged on the front side and the back side of the annular end plate.

[0014] Preferably, the traction mechanism includes a hydraulic cylinder C, an inverted plate, a sliding shaft, a tension spring, a T-shaped plate and a limit block, the hydraulic cylinder C is fixedly connected to the inner wall of the outer shell, the inverted plate is fixedly arranged at the end of the output shaft of the hydraulic cylinder C, the sliding shaft slides through the middle of the side of the inverted plate, the tension spring is sleeved on the outside of the sliding shaft and fixedly connected between the inverted plate and the T-shaped plate, the T-shaped plate is rotatably sleeved on the outside of the sliding shaft through a bearing, a second storage tank for storing cleaning waste water is arranged under the inverted plate, and the limit block is fixedly arranged on the top of the second storage tank.

[0015] Preferably, the vibration assembly further comprises two L-shaped fixing rods, the two L-shaped fixing rods are respectively fixedly disposed at two ends of the bottom of the crossbeam, and the two L-shaped fixing rods are both fixedly connected to the inner wall of the outer shell.

[0016] Preferably, the flushing mechanism comprises two groups of symmetrically arranged flushing components, and a third storage tank for storing cleaning water is arranged below the two groups of flushing components.

[0017] Preferably, any group of the flushing components includes a suction shell, a water inlet pipe, a water outlet pipe, a tilted nozzle, a piston plate, a return spring and a piston rod, the suction shell is fixedly arranged on the top of the third storage tank, the water inlet pipe is fixedly penetrated and arranged on one side of the bottom of the suction shell, the water outlet pipe is fixedly penetrated and arranged on the other side of the bottom of the suction shell, both the water inlet pipe and the water outlet pipe are provided with a one-way valve, the tilted nozzle is fixedly arranged at the end of the water outlet pipe, the piston plate is slidably arranged inside the suction shell, the return spring is fixedly connected between the left side of the piston plate and the inner wall of the suction shell, and the piston rod slides through the side wall of the suction shell and is fixedly arranged on the right side of the piston plate.

[0018] Technical effects and advantages of the present invention:

[0019] The present invention is provided with a test piece fixing mechanism and a vibration cleaning mechanism, so that when the test piece is released from clamping after the test is completed, the test piece fixing mechanism quickly passes through the vibration cleaning mechanism due to the pulling of the traction mechanism, thereby causing the test piece to swing back and forth quickly to realize the recovery of kerosene inside the test piece. Subsequently, when the flushing mechanism completes the flushing of the test piece and the traction mechanism drives the test piece to reset, the vibration cleaning mechanism again causes the test piece to swing back and forth through the test piece fixing mechanism, thereby clearing the residual cleaning waste water inside the test piece. Compared with the prior art, the present invention can realize the recovery and flushing of residual kerosene inside the test piece, and at the same time can avoid the residue of cleaning waste water inside the test piece, thereby reducing the difficulty of removing the test piece after the test is completed, avoiding the kerosene as the test medium from contaminating the test personnel or dripping into the working environment, and reducing the test cost and the difficulty of subsequent post-test disposal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the housing of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the high-precision pressure testing mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the vibration cleaning mechanism of the present invention;

[0024] Figure 5 The traction mechanism of the present invention and Figure 4 The enlarged structural diagram of part A in the middle;

[0025] Figure 6 It is a schematic diagram of the structure of the flushing mechanism of the present invention.

[0026] In the figure: 1. Shell; 2. High-precision pressure test mechanism; 21. Hydraulic cylinder A; 22. Pressure regulating cylinder; 23. Liquid input pipe; 24. Liquid output pipe; 25. Pressure gauge; 26. Solenoid pressure relief valve; 27. Pressure regulating piston; 28. Hydraulic cylinder B; 3. Test piece fixing mechanism; 31. U-shaped frame; 32. Push rod; 33. Electric push rod; 34. Sliding arm; 35. Annular end plate; 36. Limiting ring; 37. Sealing ring; 4. Traction machine Structure; 41. Hydraulic cylinder C; 42. Inverted plate; 43. Sliding shaft; 44. Tension spring; 45. T-shaped plate; 46. Limit block; 5. Vibration cleaning mechanism; 51. Crossbeam; 52. Smooth part; 53. Concave part; 54. Protruding part; 55. L-shaped fixing rod; 6. Flushing mechanism; 61. Suction shell; 62. Water inlet pipe; 63. Water outlet pipe; 64. Tilted nozzle; 65. Piston plate; 66. Return spring; 67. Piston rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The present invention provides Figure 1-Figure 6 A pressure resistance testing system suitable for high-precision pressure control is shown, comprising a shell 1, a high-precision pressure testing mechanism 2 is arranged at the right end inside the shell 1, a test piece fixing mechanism 3 is arranged on the left side of the high-precision pressure testing mechanism 2, a traction mechanism 4 for driving the test piece fixing mechanism 3 to move is connected to the left side of the test piece fixing mechanism 3, a vibration cleaning mechanism 5 is arranged at the bottom of the traction mechanism 4, and a flushing mechanism 6 for flushing the test piece is arranged at the left end inside the shell 1.

[0029] like Figure 3 As shown, the high-precision pressure testing mechanism 2 includes two groups of symmetrically arranged pressure testing components, and a first storage tank for storing kerosene is arranged below the two groups of pressure testing components. Any group of the pressure testing components includes a hydraulic cylinder A21, a pressure regulating cylinder 22, a liquid input pipe 23, a liquid output pipe 24, a pressure gauge 25 and an electromagnetic pressure relief valve 26, wherein the hydraulic cylinder A21 is fixedly connected to the inner wall of the outer shell 1, the pressure regulating cylinder 22 is fixedly arranged at the end of the output shaft of the hydraulic cylinder A21, the liquid input pipe 23 is fixedly penetrated at the bottom of the pressure regulating cylinder 22 and is connected to a transmission pump, the transmission pump is located inside the first storage tank, the liquid output pipe 24 is fixedly penetrated at the right side of the pressure regulating cylinder 22, and the pressure gauge 25 and the electromagnetic pressure relief valve 26 are both arranged on the liquid output pipe 24.

[0030] By setting the above structure, the hydraulic cylinder A21 can drive the pressure regulating cylinder 22 to move inward after being started, until the inner opening of the pressure regulating cylinder 22 is tightly fitted against the annular end plate 35 and the adjacent side thereof. At this time, the two sealing rings 37 respectively seal between the annular end plate 35 and the workpiece to be tested and between the annular end plate 35 and the pressure regulating cylinder 22. At the same time, the workpiece fixing mechanism 3 is clamped by the high-precision pressure testing mechanism 2.

[0031] like Figure 3 As shown, a pressure regulating assembly is arranged inside the pressure regulating cylinder 22, and the pressure regulating assembly includes a pressure regulating piston 27 and a hydraulic cylinder B28. The pressure regulating piston 27 is slidably fitted inside the pressure regulating cylinder 22, and the hydraulic cylinder B28 is fixedly arranged on the outside of the pressure regulating cylinder 22 and its output shaft is fixedly connected to the pressure regulating piston 27.

[0032] By setting the above structure, the two transmission pumps can respectively suck the kerosene in the first storage tank through the two liquid input pipes 23, and then respectively input it into the pressure regulating cylinder 22. In this process, the two pressure gauges 25 read the hydraulic pressure change values ​​inside the adjacent pressure regulating cylinders 22 and output them. After the pressure reaches the expected value, the transmission pump is stopped, so that the hydraulic cylinder B28 in one group of pressure test components pushes the pressure regulating piston 27 to move inside the pressure regulating cylinder 22, and then the kerosene in the pressure regulating cylinder 22 is slowly pressurized. Since the pressurization speed is slow, the relative accuracy is higher. When the reading of the pressure gauge 25 in the other group of pressure test components changes, the reading of the pressure gauge 25 is the extreme value of the pressure resistance capacity of one side of the tested piece. Then, the two electromagnetic pressure relief valves 26 are opened, and the kerosene in the tested piece and the two pressure gauges 25 is discharged into the first storage tank. Then, the above suction operation is repeated and the hydraulic cylinder B28 in the other group is selected to start, and then the extreme value of the pressure resistance capacity of the other side of the tested piece is measured.

[0033] like Figure 4 and Figure 5 As shown, the test piece fixing mechanism 3 includes a U-shaped frame 31, a lever 32 and two groups of clamping components symmetrically arranged, wherein the clamping component includes an electric push rod 33, a sliding arm 34, an annular end plate 35, a limit ring 36 and a sealing ring 37, wherein the U-shaped frame 31 is rotatably sleeved on the right end of the sliding shaft 43 through a bearing, two push rods 32 are provided, and the two push rods 32 are respectively fixed on the front and back of the U-shaped frame 31, and the two groups of clamping components are both located on the right side of the U-shaped frame 31, the electric push rod 33 is fixedly provided on the outside of the U-shaped frame 31, the sliding arm 34 is slidably nested on the inside of the U-shaped frame 31 and fixedly connected to the output shaft of the electric push rod 33, the annular end plate 35 is fixedly provided at the end of the sliding arm 34, the limit ring 36 is fixedly provided on the front of the annular end plate 35, and two sealing rings 37 are provided, and the two sealing rings 37 are respectively fixedly provided on the front and back of the annular end plate 35.

[0034] By setting the above structure, it is convenient to place the workpiece under test between the two annular end plates 35 and start the two electric push rods 33. After the electric push rods 33 are started, the annular end plates 35 are driven inward by the sliding arms 34, so that the two annular end plates 35 clamp the workpiece under test. During the clamping process, please note that the limit ring 36 needs to be sleeved on the outer side of the end of the workpiece under test.

[0035] like Figure 4As shown, the traction mechanism 4 includes a hydraulic cylinder C41, an inverted plate 42, a sliding shaft 43, a tension spring 44, a T-shaped plate 45 and a limit block 46, wherein the hydraulic cylinder C41 is fixedly connected to the inner wall of the outer shell 1, the inverted plate 42 is fixedly arranged at the end of the output shaft of the hydraulic cylinder C41, the sliding shaft 43 slides through the middle of the side of the inverted plate 42, the tension spring 44 is sleeved on the outside of the sliding shaft 43 and fixedly connected between the inverted plate 42 and the T-shaped plate 45, the T-shaped plate 45 is rotatably sleeved on the outside of the sliding shaft 43 through a bearing, and a second storage tank for storing cleaning waste water is arranged below the inverted plate 42, and the limit block 46 is fixedly arranged on the top of the second storage tank.

[0036] By setting the above structure, the hydraulic cylinder C41 can drive the inverted plate 42 to move continuously to the left after it is started. Since the fixed mechanism 3 of the tested piece is clamped by the high-precision pressure testing mechanism 2 at this time, the sliding shaft 43 cannot move synchronously. As the inverted plate 42 continues to move to the left, the tension spring 44 is continuously stretched. In the subsequent rightward movement of the inverted plate 42, the T-shaped plate 45 is driven to move rightward through the tension spring 44. When the T-shaped plate 45 moves to the right, the U-shaped frame 31 is driven to move rightward through the sliding shaft 43. In this process, under the action of the lever 32 and the two sets of vibration cleaning mechanisms 5, the tested piece swings back and forth again, thereby throwing out the cleaning waste water remaining inside it.

[0037] like Figure 4 As shown, the vibration clearing mechanism 5 includes two groups of vibration components parallel to each other, and any group of the vibration components includes a beam 51, and smooth portions 52 are provided at both ends of the top of the beam 51. A plurality of recessed portions 53 and protruding portions 54 are provided at the top of the beam 51, and the plurality of recessed portions 53 and the plurality of protruding portions 54 are staggered. The smooth portion 52 at the right end of the top of the beam 51 on the front is adjacent to the recessed portion 53, and the smooth portion 52 at the right end of the top of the beam 51 on the back is adjacent to the protruding portion 54. The vibration component also includes two L-shaped fixing rods 55, which are respectively fixed at the two ends of the bottom of the beam 51, and are fixedly connected to the inner wall of the outer shell 1.

[0038] By setting the above structure, when the stretched tension spring 44 drives the sliding shaft 43 to move left quickly through the T-shaped plate 45, the sliding shaft 43 drives the U-shaped frame 31 to move synchronously during the leftward movement. During the movement of the U-shaped frame 31, the two levers 32 are driven from the smooth portion 52 on the top of the crossbeam 51 to successively pass through multiple recessed portions 53 and protruding portions 54. In this process, due to the different distribution modes of the recessed portions 53 and protruding portions 54 on the tops of the two crossbeams 51, the two levers 32 drive the U-shaped frame 31 to swing back and forth quickly at the end of the sliding shaft 43. At this time, the kerosene remaining inside the measured object is thrown out due to the rapid reciprocating swing of the measured object, and then falls into the first storage pool to be recovered.

[0039] like Figure 6 As shown, the flushing mechanism 6 includes two groups of symmetrically arranged flushing components, and a third storage tank for storing cleaning water is arranged below the two groups of flushing components. Any group of the flushing components includes a suction shell 61, a water inlet pipe 62, a water outlet pipe 63, an inclined nozzle 64, a piston plate 65, a reset spring 66 and a piston rod 67, wherein the suction shell 61 is fixedly arranged on the top of the third storage tank, the water inlet pipe 62 is fixedly penetrated and arranged on one side of the bottom of the suction shell 61, the water outlet pipe 63 is fixedly penetrated and arranged on the other side of the bottom of the suction shell 61, and a one-way valve is arranged on both the water inlet pipe 62 and the water outlet pipe 63, the inclined nozzle 64 is fixedly arranged at the end of the water outlet pipe 63, the piston plate 65 is slidably arranged inside the suction shell 61, the reset spring 66 is fixedly connected between the left side of the piston plate 65 and the inner wall of the suction shell 61, and the piston rod 67 slides through the side wall of the suction shell 61 and is fixedly arranged on the right side of the piston plate 65.

[0040] By setting the above structure, the inverted plate 42 contacts the piston rod 67 due to continuous leftward movement. Subsequently, the piston rod 67 drives the piston plate 65 to move leftward inside the suction shell 61 due to the push of the inverted plate 42. At this time, the piston plate 65 compresses the reset spring 66. At the same time, the cleaning water containing the rust inhibitor in the suction shell 61 enters the inclined nozzle 64 through the outlet pipe 63, and is then sprayed to the openings at both ends of the measured part by the inclined nozzle 64, thereby flushing the unrecovered kerosene inside the measured part. The flushing waste water falls into the second storage tank and is collected. After the flushing is completed, the hydraulic cylinder C41 drives the inverted plate 42 to move right and reset. In this process, the compressed reset spring 66 pushes the piston plate 65 to reset. During the reset process of the piston plate 65, the cleaning water containing the rust inhibitor in the third storage tank is sucked through the inlet pipe 62, thereby filling the suction shell 61 with the cleaning water again for the next flushing operation.

[0041] The present invention also discloses a method for using a pressure-resistant test system suitable for high-precision pressure control, which specifically comprises the following steps:

[0042] S1. The workpiece to be tested is placed between the two annular end plates 35 and the two electric push rods 33 are started. After the electric push rods 33 are started, the annular end plates 35 are driven to move inwards through the sliding arms 34, so that the two annular end plates 35 clamp the workpiece to be tested. During the clamping process, it is noted that the limit ring 36 needs to be sleeved on the outer side of the end of the workpiece to be tested;

[0043] S2, start the hydraulic cylinder A21, after which the hydraulic cylinder A21 drives the pressure regulating cylinder 22 to move inward until the inner opening of the pressure regulating cylinder 22 is tightly fitted to the side of the annular end plate 35 adjacent to it. At this time, the two sealing rings 37 respectively seal between the annular end plate 35 and the tested object and between the annular end plate 35 and the pressure regulating cylinder 22, and at the same time, the tested object fixing mechanism 3 is clamped by the high-precision pressure testing mechanism 2;

[0044] S3, the two transmission pumps are used to suck the kerosene in the first storage tank through the two liquid input pipes 23 respectively, and then respectively input it into the pressure regulating cylinder 22. During this process, the two pressure gauges 25 read the hydraulic pressure change values ​​inside the adjacent pressure regulating cylinders 22 and output them. After the pressure reaches the expected value, the transmission pump is stopped, and the hydraulic cylinder B28 in one group of pressure test components pushes the pressure regulating piston 27 to move inside the pressure regulating cylinder 22, thereby slowly pressurizing the kerosene inside the pressure regulating cylinder 22. Since the pressurization speed is slow, the relative accuracy is higher. When the reading of the pressure gauge 25 in the other group of pressure test components changes, the reading of the pressure gauge 25 is the extreme value of the pressure resistance capacity of one side of the tested piece. Then, the two electromagnetic pressure relief valves 26 are opened, and the kerosene inside the tested piece and the two pressure gauges 25 is discharged into the first storage tank. Then, the above suction operation is repeated and the hydraulic cylinder B28 in another group is selected to start, thereby measuring the extreme value of the pressure resistance capacity of the other side of the tested piece.

[0045] S4, when the transmission pump is started, the hydraulic cylinder C41 is started synchronously. After the hydraulic cylinder C41 is started, it drives the inverted plate 42 to move left continuously. Since the fixed mechanism 3 of the tested piece is clamped by the high-precision pressure testing mechanism 2 at this time, the sliding shaft 43 cannot move synchronously. As the inverted plate 42 continues to move left, the tension spring 44 is continuously stretched;

[0046] S5, the hydraulic cylinder A21 drives the pressure regulating cylinder 22 to reset, at which time the pressure regulating cylinder 22 is detached from the outside of the adjacent pressure gauge 25, and the high-precision pressure testing mechanism 2 is no longer clamped. At this time, the stretched tension spring 44 drives the sliding shaft 43 to move left quickly through the T-shaped plate 45, and the sliding shaft 43 drives the U-shaped frame 31 to move synchronously during the leftward movement. During the movement of the U-shaped frame 31, the two levers 32 are driven from the smooth part 52 on the top of the crossbeam 51 to successively pass through a plurality of recessed parts 53 and protruding parts 54. In this process, due to the different distribution modes of the recessed parts 53 and protruding parts 54 on the tops of the two crossbeams 51, the two levers 32 drive the U-shaped frame 31 to swing back and forth quickly at the end of the sliding shaft 43. At this time, the kerosene remaining inside the tested piece is thrown out due to the rapid reciprocating swing of the tested piece, and then falls into the first storage pool for recovery;

[0047] S6, after the stretched tension spring 44 is reset, as the inverted plate 42 continues to move, the U-shaped frame 31 continues to drive the tested object to swing back and forth, but the swing frequency is reduced, and then the T-shaped plate 45 is driven by the tension spring 44 to fit with the limit block 46, at which time the limit block 46 blocks the T-shaped plate 45, and the tested object arrives at the washing station between the two inclined nozzles 64 and cannot continue to move left;

[0048] S7, the inverted plate 42 contacts the piston rod 67 due to the continuous leftward movement, and the piston rod 67 subsequently drives the piston plate 65 to move leftward inside the suction housing 61 due to the push of the inverted plate 42. At this time, the piston plate 65 compresses the return spring 66, and at the same time, the cleaning water containing the rust inhibitor inside the suction housing 61 enters the inclined nozzle 64 through the outlet pipe 63, and then is sprayed by the inclined nozzle 64 to the openings at both ends of the test piece, thereby flushing the unrecovered kerosene inside the test piece, and the flushing waste water falls into the second storage tank and is collected;

[0049] S8, after the flushing is completed, the hydraulic cylinder C41 drives the inverted plate 42 to move rightward and reset. During this process, the compressed reset spring 66 pushes the piston plate 65 to reset. During the reset process of the piston plate 65, the cleaning water containing the rust inhibitor in the third storage tank is sucked through the water inlet pipe 62, so that the cleaning water fills the inside of the suction housing 61 again, so as to perform the flushing operation next time;

[0050] S9, when the inverted plate 42 moves rightward, the tension spring 44 drives the T-shaped plate 45 to move rightward, and when the T-shaped plate 45 moves rightward, the sliding shaft 43 drives the U-shaped frame 31 to move rightward. During this process, under the action of the lever 32 and the two sets of vibration cleaning mechanisms 5, the tested piece swings back and forth again, thereby throwing out the residual cleaning waste water inside it;

[0051] S10, after the tested object reaches the initial position, the tested object is taken, and at the same time, the electric push rod 33 drives the annular end plate 35 to move outward through the sliding arm 34, thereby releasing the clamping of the tested object, and then taking the tested object out from the inside of the housing 1.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A withstand voltage test system suitable for high-precision pressure control, characterized in that: It comprises a shell, a high-precision pressure testing mechanism is arranged at the right end of the shell, a test piece fixing mechanism is arranged at the left side of the high-precision pressure testing mechanism, a traction mechanism for driving the test piece fixing mechanism to move is connected to the left side of the test piece fixing mechanism, a vibration cleaning mechanism is arranged at the bottom of the traction mechanism, and a flushing mechanism for flushing the test piece is arranged at the left end of the shell; The test piece fixing mechanism includes a U-shaped frame, a lever and two sets of clamping components symmetrically arranged with each other; The U-shaped frame is rotatably sleeved and arranged at the right end of the sliding shaft through a bearing, and two levers are arranged, and the two levers are respectively fixedly arranged at the front and back of the U-shaped frame, and the two sets of clamping components are both located at the right side of the U-shaped frame; The vibration cleaning mechanism includes two sets of vibration components parallel to each other, and any set of vibration components includes a crossbeam, and smooth parts are arranged at both ends of the top of the crossbeam, and a plurality of concave parts and convex parts are arranged on the top of the crossbeam, and the plurality of concave parts and the plurality of convex parts are staggered, and the smooth part at the right end of the top of the front crossbeam is adjacent to the concave part, and the smooth part at the right end of the top of the back crossbeam is adjacent to the convex part; The high-precision pressure testing mechanism includes two groups of symmetrically arranged pressure testing components, and a first storage tank for storing kerosene is arranged below the two groups of pressure testing components; Any set of pressure testing components includes a hydraulic cylinder A, a pressure regulating cylinder, a liquid input pipe, a liquid output pipe, a pressure gauge and an electromagnetic pressure relief valve. The hydraulic cylinder A is fixedly connected to the inner wall of the outer shell. The pressure regulating cylinder is fixedly arranged at the end of the output shaft of the hydraulic cylinder A. A pressure regulating assembly is arranged inside the pressure regulating cylinder. The liquid input pipe is fixedly arranged through the bottom of the pressure regulating cylinder and is connected to a transmission pump. The transmission pump is located inside the first storage tank. The liquid output pipe is fixedly arranged through the right side of the pressure regulating cylinder. The pressure gauge and the electromagnetic pressure relief valve are both arranged on the liquid output pipe.

2. A withstand voltage test system suitable for high-precision pressure control according to claim 1, characterized in that: The pressure regulating assembly includes a pressure regulating piston and a hydraulic cylinder B. The pressure regulating piston is slidably fitted inside the pressure regulating cylinder. The hydraulic cylinder B is fixedly arranged outside the pressure regulating cylinder and its output shaft is fixedly connected to the pressure regulating piston.

3. A withstand voltage test system suitable for high-precision pressure control according to claim 2, characterized in that: The clamping assembly includes an electric push rod, a sliding arm, an annular end plate, a limit ring and a sealing ring. The electric push rod is fixedly arranged on the outside of the U-shaped frame, the sliding arm is slidably nested on the inside of the U-shaped frame and fixedly connected to the output shaft of the electric push rod, the annular end plate is fixedly arranged on the end of the sliding arm, the limit ring is fixedly arranged on the front side of the annular end plate, and two sealing rings are provided, and the two sealing rings are respectively fixedly arranged on the front side and the back side of the annular end plate.

4. A withstand voltage test system suitable for high-precision pressure control according to claim 3, characterized in that: The traction mechanism includes a hydraulic cylinder C, an inverted plate, a sliding shaft, a tension spring, a T-shaped plate and a limit block. The hydraulic cylinder C is fixedly connected to the inner wall of the outer shell. The inverted plate is fixedly arranged at the end of the output shaft of the hydraulic cylinder C. The sliding shaft slides through the middle of the side of the inverted plate. The tension spring is sleeved on the outside of the sliding shaft and fixedly connected between the inverted plate and the T-shaped plate. The T-shaped plate is rotatably sleeved on the outside of the sliding shaft through a bearing. A second storage tank for storing cleaning waste water is arranged under the inverted plate, and the limit block is fixedly arranged on the top of the second storage tank.

5. A withstand voltage test system suitable for high-precision pressure control according to claim 4, characterized in that: The vibration component also includes two L-shaped fixing rods, which are respectively fixedly arranged at two ends of the bottom of the crossbeam, and the two L-shaped fixing rods are both fixedly connected to the inner wall of the shell.

6. A withstand voltage test system suitable for high-precision pressure control according to claim 5, characterized in that: The flushing mechanism comprises two groups of symmetrically arranged flushing components, and a third storage tank for storing cleaning water is arranged below the two groups of flushing components.

7. A withstand voltage test system suitable for high-precision pressure control according to claim 6, characterized in that: Any group of flushing components includes a suction shell, a water inlet pipe, a water outlet pipe, a tilted nozzle, a piston plate, a return spring and a piston rod. The suction shell is fixedly arranged on the top of the third storage tank, the water inlet pipe is fixedly penetrated and arranged on one side of the bottom of the suction shell, the water outlet pipe is fixedly penetrated and arranged on the other side of the bottom of the suction shell, and a one-way valve is arranged on both the water inlet pipe and the water outlet pipe. The tilted nozzle is fixedly arranged at the end of the water outlet pipe, the piston plate is slidably arranged inside the suction shell, the return spring is fixedly connected between the left side of the piston plate and the inner wall of the suction shell, and the piston rod slides through the side wall of the suction shell and is fixedly arranged on the right side of the piston plate.

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