CN117990300A - Air tightness detection device of axial plunger pump - Google Patents
Air tightness detection device of axial plunger pump Download PDFInfo
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- CN117990300A CN117990300A CN202410135895.3A CN202410135895A CN117990300A CN 117990300 A CN117990300 A CN 117990300A CN 202410135895 A CN202410135895 A CN 202410135895A CN 117990300 A CN117990300 A CN 117990300A
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- 238000001514 detection method Methods 0.000 title claims abstract description 48
- 210000001503 joint Anatomy 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 97
- 238000003825 pressing Methods 0.000 claims description 21
- 238000009423 ventilation Methods 0.000 claims description 10
- 230000002146 bilateral effect Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 238000003032 molecular docking Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 14
- 238000001125 extrusion Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
The invention relates to the technical field of plunger pump detection, in particular to an air tightness detection device of an axial plunger pump, which comprises a bottom plate, a concave supporting plate and a driving motor, wherein the upper end of the bottom plate is transversely provided with the concave supporting plate, two end parts of the concave supporting plate are downwards fixedly connected with the bottom plate, the upper end of the bottom plate is symmetrically provided with two dovetail grooves in a left-right mode, the driving motor is fixedly arranged between the two dovetail grooves at the upper end of the bottom plate, the upper part of the bottom plate is symmetrically provided with two clamping mechanisms at the inner side of the concave supporting plate, and an axial plunger pump body is arranged between the two clamping mechanisms, and the invention has the beneficial effects that: when the air tightness of the axial plunger pump body is required to be detected, the axial plunger pump body is placed on the bottom plate, so that the transmission shaft of the axial plunger pump body is in butt joint with the motor shaft of the driving motor, and the axial plunger pump body is clamped and fixed through the matching of two clamping parts in the two clamping mechanisms.
Description
Technical Field
The invention relates to the technical field of plunger pump detection, in particular to an air tightness detection device of an axial plunger pump.
Background
The axial plunger pump adopts an oil distribution disc to distribute oil, a cylinder body rotates, and a variable head is used for variable displacement. The pump adopts the design of optimal oil film thickness of hydrostatic balance, so that the cylinder body, the oil distribution disc, the sliding shoes and the variable head operate under pure liquid friction, and the pump has the advantages of simple structure, small volume, low noise, high efficiency, long service life, self-priming capability and the like, and is widely applied to forging and pressing of machine tools, metallurgy, engineering, mines, ships and other hydraulic transmission systems. In order to ensure normal use of the axial plunger pump, the axial plunger pump needs to be aligned for air tightness detection before delivery or after a period of use.
The existing axial plunger pump air tightness detection device is complex to operate, an oil inlet and an oil outlet of the axial plunger pump are required to be plugged during detection, high-pressure gas is introduced into the axial plunger pump from the oil inlet and the oil outlet, the axial plunger pump is placed into a water tank, whether bubbles emerge in the water tank or not is observed, and accordingly tightness of the axial plunger pump is judged, however, the detection mode has great defects, if the axial plunger pump leaks, external water can enter the axial plunger pump, so that the axial plunger pump is damaged, subsequent maintenance difficulty is increased, and the traditional oil inlet and oil outlet sealing of the axial plunger pump is mostly carried out in a flange mode and the like, so that the operation is complicated, and bolts, screw holes and the like on a sealing piece are worn after being used for many times, so that sealing is not tight, and detection results are affected; the existing air tightness detection mode can only detect whether the tightness of the axial plunger pump is good or not, and cannot determine the air leakage position of the axial plunger pump, so that inconvenience is brought to subsequent maintenance.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The invention aims to provide an air tightness detection device of an axial plunger pump, so as to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides an air tightness detection device of axial plunger pump, includes bottom plate, concave type backup pad and driving motor, the upper end of bottom plate is spanned and is provided with concave type backup pad, two tip downward and bottom plate fixed connection of concave type backup pad, two dovetail have been seted up to the upper end bilateral symmetry of bottom plate, and the upper end of bottom plate is provided with driving motor between two dovetail, the top of bottom plate is provided with two fixture in the inboard symmetry of concave type backup pad, installs axial plunger pump body between two fixture, and the transmission shaft of axial plunger pump body is docked with driving motor's motor shaft, all installs the subassembly that aerifys on two fixture, the sealing mechanism of axial plunger pump body business turn over hydraulic fluid port is installed to the side at the subassembly that aerifys on the fixture, the upper end of concave type backup pad is provided with the intercommunication mechanism that is used for two subassemblies that aerifys.
As a preferable scheme of the air tightness detection device of the axial plunger pump, the clamping mechanism comprises two moving plates, a dovetail-shaped sliding plate, a first telescopic cylinder and a clamping part, wherein the two moving plates are symmetrically arranged on a bottom plate, the dovetail-shaped sliding plate is arranged at the lower end of the moving plate, the first telescopic cylinder is arranged at one end of the moving plate, the clamping part is arranged on the side surface of the moving plate, the moving plates are respectively and fixedly connected with the dovetail-shaped sliding plate and the first telescopic cylinder, and the first telescopic cylinder is fixedly connected with the side wall of the concave supporting plate.
As a preferable scheme of the air tightness detection device of the axial plunger pump, the clamping component is connected with the movable plate through the connecting frame, the connecting frame is fixedly connected with the movable plate and the clamping component respectively, the inner side of the clamping component is fixedly connected with the protection pad, and the dovetail sliding plate is in sliding connection with the dovetail groove.
As a preferred scheme of the air tightness detection device of the axial plunger pump, the air charging assembly comprises an air inlet cavity arranged at the upper end of a movable plate, a transverse plate, an air inlet pipe, an air outlet pipe, an air pump and a pressure detector, wherein the transverse plate is transversely arranged in the inner cavity of the air inlet cavity;
the sealing assembly comprises a guide polish rod arranged on the transverse plate, a limiting ring arranged at the lower end of the guide polish rod, a sealing spring arranged on the guide polish rod and a sealing plug arranged at the upper end of the guide polish rod and used for sealing the butt joint groove.
As a preferable scheme of the air tightness detection device of the axial plunger pump, the air inlet cavity is fixedly connected with the movable plate, the transverse plate, the air inlet pipe, the air outlet pipe and the pressure detector respectively, wherein one ends of the air inlet pipe, the air outlet pipe and the pressure detector are communicated with the inner cavity of the air inlet cavity, one end of the air inlet pipe, which is far away from the air inlet cavity, is connected with the air pump through the pipe joint, the air pump is fixedly connected with the movable plate, and one end of the air outlet pipe is inserted into the oil inlet and outlet of the axial plunger pump body.
As a preferable scheme of the air tightness detection device of the axial plunger pump, the lower end of the guide polish rod penetrates through the transverse plate to be fixedly connected with the limiting ring, the upper end of the guide polish rod is fixedly connected with the sealing plug, the sealing spring is arranged between the transverse plate and the sealing plug, and the sealing plug is spliced with the butt joint groove.
As a preferable scheme of the air tightness detection device of the axial plunger pump, the sealing mechanism comprises a sealing cover sleeved on the air outlet pipe, a convex air bag arranged in the inner cavity of the sealing cover, and an air inlet hose arranged on the side surface of the convex air bag and used for communicating the air pump, wherein the sealing cover is fixedly connected with the air outlet pipe and the convex air bag respectively, the convex air bag is sleeved on the air outlet pipe, one end of the air inlet hose is fixedly connected with the convex air bag, and the other end of the air inlet hose penetrates through the side surface of the sealing cover and is connected with the air pump through a pipe joint.
As an optimal scheme of the air tightness detection device of the axial plunger pump, the sealing cover is sleeved on the oil inlet and outlet of the axial plunger pump body, the convex part of the convex air bag is inserted into the oil inlet and outlet of the axial plunger pump body, and the bottom pad of the convex air bag is arranged between the sealing cover and the end part of the oil inlet and outlet of the axial plunger pump body.
As a preferred scheme of the air tightness detection device of the axial plunger pump, the communication mechanism comprises two second telescopic cylinders symmetrically arranged on the concave supporting plate, a U-shaped communication pipe arranged at the lower end of the second telescopic cylinders, two round pipes symmetrically arranged at the lower end of the U-shaped communication pipe, an annular pressing plate, an annular air bag and a sealing pad which are sequentially sleeved on the round pipes from top to bottom, and two fan-shaped extrusion plates symmetrically arranged at the lower end of the round pipes, wherein the round pipes are fixedly connected with the U-shaped communication pipe, the annular pressing plate, the annular air bag, the sealing pad and the fan-shaped extrusion plates respectively, the second telescopic cylinders are fixedly arranged at the upper end of the concave supporting plate, an inner rod of each second telescopic cylinder penetrates through the upper end of the concave supporting plate to be fixedly connected with the U-shaped communication pipe, the upper end of each round pipe is communicated with an inner cavity of the U-shaped communication pipe, a plurality of ventilation grooves are formed in a member array at the lower end of the round pipes, the annular air bag is sleeved on the outer side of the ventilation grooves, and the annular air bag is communicated with the inner cavity of the round pipes through the ventilation grooves.
As a preferable scheme of the air tightness detection device of the axial plunger pump, the lower end of the circular tube is inserted into the butt joint groove, the annular air bag and the sealing gasket are both inserted into the butt joint groove, the annular pressing plate is tightly attached to the upper end of the butt joint groove, and the lower end of the fan-shaped pressing plate penetrates through the butt joint groove to be in pressing contact with the sealing plug.
The beneficial effects of the invention are as follows:
1. When the air tightness detection needs to be carried out on the axial plunger pump body, the axial plunger pump body is placed on the bottom plate, the transmission shaft of the axial plunger pump body is in butt joint with the motor shaft of the driving motor, at the moment, the axial plunger pump body is clamped and fixed through the matching of two clamping parts in the two clamping mechanisms, meanwhile, the two clamping mechanisms drive the two inflating assemblies and the two sealing mechanisms to approach the axial plunger pump body, the oil inlet and the oil outlet of the axial plunger pump body are sealed through the two sealing mechanisms, the high-pressure air is firstly filled into the inner cavity on the oil inlet side of the axial plunger pump body, the value of the pressure detector on the oil inlet side is observed, so that the quality of the sealing of the cavity on the oil outlet side of the axial plunger pump body is judged, the sealing detection is carried out on the cavity on the oil inlet side of the axial plunger pump body and the cavity on the oil outlet side of the axial plunger pump body according to the same operation, and the detection mode is simple, convenient and high accuracy is judged.
2. The two air pumps are communicated through the communication mechanism, high-pressure air is introduced into the two air inlet cavities at the moment, the high-pressure air is respectively introduced into the axial plunger pump body, the driving motor drives the transmission shaft of the axial plunger pump body to rotate, so that the plunger in the axial plunger pump body slides along the cylinder body, air in the oil inlet flows into the cylinder body and flows out along the oil outlet, the high-pressure air flows among the axial plunger pump body, the two air inlet cavities and the U-shaped communicating pipe, the numerical values of the pressure detectors on the two air inlet cavities are observed at the moment, and accordingly tightness between the cylinder body and the plunger is judged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of an air tightness detection device of an axial plunger pump of the present invention;
FIG. 2 is a cross-sectional view of an air tightness detection device of an axial plunger pump of the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is a cross-sectional view of the inflation assembly and sealing mechanism of the present invention;
FIG. 5 is an enlarged schematic view of FIG. 4 at B;
FIG. 6 is an exploded view of the clamping mechanism, axial plunger pump body, inflation assembly and sealing mechanism of the present invention;
FIG. 7 is an exploded view of the inflation assembly and communication mechanism of the present invention;
FIG. 8 is a schematic view of a seal assembly of the present invention sealing a mating groove of an air intake chamber.
In the figure: 1. a bottom plate; 11. a dovetail groove; 12. a concave supporting plate; 13. a driving motor; 2. a moving plate; 21. a dovetail-shaped slide plate; 22. a first telescopic cylinder; 23. a clamping member; 24. an axial plunger pump body; 3. an air inlet cavity; 31. a butt joint groove; 32. a cross plate; 33. an air inlet pipe; 34. an air pump; 35. an air outlet pipe; 36. a pressure detector; 4. guiding a polished rod; 41. a limiting ring; 42. a seal spring; 43. a sealing plug; 5. sealing cover; 51. a convex air bag; 52. an air intake hose; 6. the second telescopic cylinder; 61. a U-shaped communicating pipe; 7. a round tube; 71. a vent groove; 72. an annular pressing plate; 73. an annular air bag; 74. a sealing gasket; 75. a fan-shaped extrusion plate.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more apparent and more particular description of embodiments of the invention, briefly summarized below, may be had by reference to the embodiments thereof which are illustrated in the appended drawings, wherein the embodiments described are, therefore, only some of the embodiments of the invention and not all of the embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 8, the present invention provides a technical solution: the utility model provides an air tightness detection device of axial plunger pump, including bottom plate 1, concave backup pad 12 and driving motor 13, the upper end of bottom plate 1 straddles and is provided with concave backup pad 12, two tip downward and bottom plate 1 fixed connection of concave backup pad 12, two dovetail grooves 11 have been seted up to the upper end bilateral symmetry of bottom plate 1, the upper end of bottom plate 1 is provided with driving motor 13 between two dovetail grooves 11 fixed mounting, the top of bottom plate 1 is provided with two fixture in concave backup pad 12 inboard symmetry, install axial plunger pump body 24 between two fixture, the transmission shaft of axial plunger pump body 24 and the motor shaft butt joint of driving motor 13, the transmission shaft synchronous rotation of axial plunger pump body 24 is driven to the motor shaft when the motor shaft rotates, and be detachable connection between the transmission shaft of motor shaft and axial plunger pump body 24, two inflation components are all installed on two fixture, two inflation components bilateral symmetry distributes in the both sides of axial plunger pump body 24, the sealing mechanism of axial plunger pump body 24 business turn over hydraulic fluid port is installed to the side of inflation component on the fixture, the upper end of concave backup pad 12 is provided with the mechanism that is used for two inflation components to communicate.
Referring to fig. 1, fig. 4 and fig. 6, the clamping mechanism comprises two moving plates 2 symmetrically arranged on a bottom plate 1 from left to right, a dovetail slide plate 21 arranged at the lower end of the moving plates 2, a first telescopic cylinder 22 arranged at one end of the moving plates 2, and clamping components 23 arranged on the side surfaces of the moving plates 2, wherein the moving plates 2 are respectively fixedly connected with the dovetail slide plate 21 and the first telescopic cylinder 22, the first telescopic cylinder 22 is fixedly connected with the side wall of a concave supporting plate 12, the clamping components 23 are connected with the moving plates 2 through a connecting frame, the connecting frame is respectively fixedly connected with the moving plates 2 and the clamping components 23, a protection pad is fixedly connected with the inner side of the clamping components 23, the dovetail slide plate 21 is in sliding connection with the dovetail groove 11, the lower end of the moving plates 2 is in sliding contact with the upper end of the bottom plate 1, the inner rods of the two first telescopic cylinders 22 extend to drive the two moving plates 2 to be close to each other, the moving plates 2 drive the dovetail slide plate 21 to slide along the dovetail groove 11, so that the two moving plates 2 drive the two clamping components 23 to be stably mutually close to each other, and the two clamping components 23 are matched with the two clamping components 23 to axially damage the pump body 24 by the protection pad, and the protection plunger 24 is prevented from being damaged by the fixed pump body due to the axial protection.
Referring to fig. 3 and fig. 6 to 8, the air charging assembly includes an air intake cavity 3 disposed at an upper end of the moving plate 2, a cross plate 32 disposed across an inner cavity of the air intake cavity 3, an air inlet pipe 33 and an air outlet pipe 35 symmetrically disposed on two sidewalls of the air intake cavity 3, an air pump 34 disposed at one end of the air inlet pipe 33, and a pressure detector 36 disposed on a side surface of the air intake cavity 3, a docking slot 31 is disposed at an upper end of the air intake cavity 3, and a sealing assembly for the docking slot 31 is mounted on the cross plate 32 in the inner cavity of the air intake cavity 3;
the sealing assembly comprises a guide polish rod 4 arranged on the transverse plate 32, a limiting ring 41 arranged at the lower end of the guide polish rod 4, a sealing spring 42 arranged on the guide polish rod 4, and a sealing plug 43 arranged at the upper end of the guide polish rod 4 and used for sealing the butt joint groove 31.
The air inlet cavity 3 is fixedly connected with the movable plate 2, the transverse plate 32, the air inlet pipe 33, the air outlet pipe 35 and the pressure detector 36 respectively, wherein one ends of the air inlet pipe 33, the air outlet pipe 35 and the pressure detector 36 are communicated with the inner cavity of the air inlet cavity 3, one end of the air inlet pipe 33, which is far away from the air inlet cavity 3, is connected with the air pump 34 through a pipe joint, the air pump 34 is fixedly connected with the movable plate 2, one end of the air outlet pipe 35 is inserted into an oil inlet and an oil outlet of the axial plunger pump body 24, the axial plunger pump body 24 is respectively arranged at the oil inlet and the oil outlet, two air outlet pipes 35 in the two air charging assemblies are respectively inserted into the oil inlet and the oil outlet, the air pump 34 is used for charging high-pressure air into the air inlet cavity 3 through the air inlet pipe 33, the high-pressure air enters the oil inlet and the oil outlet through the air outlet pipe 35 so as to enter the axial plunger pump body 24, the lower extreme of direction polished rod 4 passes diaphragm 32 and spacing ring 41 fixed connection, direction polished rod 4 and diaphragm 32 sliding connection, the upper end and the sealing plug 43 fixed connection of direction polished rod 4, sealing spring 42 sets up between diaphragm 32 and sealing plug 43, sealing plug 43 and butt joint groove 31 grafting, sealing spring 42's lower extreme and diaphragm 32 grafting, sealing spring 42's upper end and sealing plug 43 grafting, sealing spring 42 exerts as elasticity to sealing plug 43, make sealing plug 43 peg graft in butt joint groove 31 under sealing spring 42 elastic force, at this moment air pump 34 lets in high-pressure gas through intake pipe 33 to the air inlet cavity 3 in, the further grafting of sealing plug 43 of promotion of high-pressure gas is firmly in butt joint groove 31, thereby seal butt joint groove 31, prevent the gas leakage phenomenon.
Referring to fig. 5 and 6, the sealing mechanism comprises a sealing cover 5 sleeved on the air outlet pipe 35, a convex air bag 51 arranged in the inner cavity of the sealing cover 5, and an air inlet hose 52 arranged on the side surface of the convex air bag 51 and used for communicating the air pump 34, the sealing cover 5 is fixedly connected with the air outlet pipe 35 and the convex air bag 51 respectively, the convex air bag 51 is sleeved on the air outlet pipe 35, one end of the air inlet hose 52 is fixedly connected with the convex air bag 51, the other end of the air inlet hose 52 passes through the side surface of the sealing cover 5 and is connected with the air pump 34 through a pipe joint, the sealing cover 5 is sleeved on an oil inlet and an oil outlet of the axial plunger pump body 24, a protruding part of the convex air bag 51 is inserted in the oil inlet and outlet of the axial plunger pump body 24, a bottom pad of the convex air bag 51 is arranged between the sealing cover 5 and the end of the oil inlet and outlet of the axial plunger pump body 24, the axial plunger pump body 24 is clamped and fixed by two clamping mechanisms, simultaneously, the two clamping mechanisms drive the two inflating assemblies and the two sealing mechanisms to approach the axial plunger pump body 24, so that the two air outlet pipes 35 and the two convex air bags 51 are respectively inserted into the oil inlet and the oil outlet of the axial plunger pump body 24, simultaneously, the two sealing covers 5 are respectively sleeved on the oil inlet and the oil outlet of the axial plunger pump body 24, when the tightness of the axial plunger pump body 24 is required to be detected, the inflating is firstly carried out through one air pump 34 on the side surface of the oil inlet of the axial plunger pump body 24, the high-pressure air is respectively introduced into the air inlet pipe 33 and the air inlet hose 52, the high-pressure air enters the convex air bags 51 through the air inlet hose 52, the convex air bags 51 are inflated to seal the oil inlet of the axial plunger pump body 24, the air inlet pipe 33 simultaneously introduces the high-pressure air into the air inlet cavity 3, the high-pressure air pushing sealing plug 43 is firmly inserted into the butt joint groove 31, the butt joint groove 31 is sealed, high-pressure gas flows into the oil inlet and the inner cavity of the axial plunger pump body 24 through the air outlet pipe 35, ventilation is stopped after the air pressure in the inner cavity of the axial plunger pump body 24 reaches a certain value, standing is performed for a period of time at the moment, if the value on the pressure detector 36 is not changed, the cavity on the oil inlet side of the axial plunger pump body 24 can be judged to be good in tightness, otherwise, the cavity on the oil outlet side of the axial plunger pump body 24 is not good, at the moment, the high-pressure gas in the cavity on the oil inlet side of the axial plunger pump body 24 is filled with the high-pressure gas according to the same operation, meanwhile, the high-pressure gas in the cavity on the oil inlet side of the axial plunger pump body 24 is emptied, and if the value on the pressure detector 36 is not changed, the cavity on the oil outlet side of the axial plunger pump body 24 can be judged to be good in tightness, otherwise, the cavity on the oil inlet side of the axial plunger pump body 24 can be judged to be good in tightness, and otherwise, due to separate detection, and when sealing is not tight, the leakage position can be judged.
Referring to fig. 3 and 7, the communication mechanism includes two second telescopic cylinders 6 symmetrically disposed on the concave support plate 12, a U-shaped communication tube 61 disposed at the lower end of the second telescopic cylinders 6, two round tubes 7 symmetrically disposed at the lower end of the U-shaped communication tube 61, an annular pressing plate 72, an annular air bag 73 and a sealing pad 74 sequentially sleeved on the round tubes 7 from top to bottom, and two fan-shaped extrusion plates 75 symmetrically disposed at the lower end of the round tubes 7, the round tubes 7 are fixedly connected with the U-shaped communication tube 61, the annular pressing plate 72, the annular air bag 73, the sealing pad 74 and the fan-shaped extrusion plates 75 respectively, the second telescopic cylinders 6 are fixedly mounted at the upper end of the concave support plate 12, an inner rod of each second telescopic cylinder 6 passes through the upper end of the concave support plate 12 and is fixedly connected with the U-shaped communication tube 61, the upper end of the round tubes 7 is communicated with the inner cavity of the U-shaped communication tube 61, a plurality of ventilation slots 71 are formed in a circumferential array of lower end members of the round tubes 7, the annular air bag 73 is sleeved outside the ventilation groove 71, the annular air bag 73 is communicated with the inner cavity of the circular tube 7 through the ventilation groove 71, the lower end of the circular tube 7 is inserted into the butt joint groove 31, the annular air bag 73 and the sealing gasket 74 are inserted into the butt joint groove 31, the annular pressing plate 72 is tightly attached to the upper end of the butt joint groove 31, the lower end of the fan-shaped pressing plate 75 penetrates through the butt joint groove 31 to be in pressing contact with the sealing plug 43, when two inflation mechanisms are communicated, the U-shaped communicating tube 61 is downwards extended through the inner rod of the second telescopic cylinder 6, the U-shaped communicating tube 61 drives the circular tube 7 to be inserted into the butt joint groove 31 at the upper end of the air inlet cavity 3, the annular pressing plate 72 is tightly attached to the upper end of the air inlet cavity 3, the annular air bag 73 and the sealing gasket 74 are inserted into the butt joint groove 31, meanwhile, the lower end of the fan-shaped pressing plate 75 pushes the sealing plug 43 to downwards move, the sealing plug 43 is removed from the butt joint groove 31, at this time, the two air pumps 34 are used for introducing high-pressure air into the two air inlet cavities 3, the high-pressure air is respectively introduced into the oil inlet and the oil outlet of the axial plunger pump body 24, meanwhile, the high-pressure air is introduced into the U-shaped communicating pipe 61 through the circular tube 7, so that the two air inlet cavities 3 are communicated, meanwhile, the high-pressure air flows into the annular air bag 73 through the air vent groove 71, the annular air bag 73 is inflated, the circular tube 7 is in sealing connection with the air inlet cavities 3 through the matching of the arranged annular pressing plate 72, the annular air bag 73 and the sealing gasket 74, at this time, the driving motor 13 is used for driving the transmission shaft of the axial plunger pump body 24 to rotate, so that the plunger in the axial plunger pump body 24 slides along the cylinder body, and meanwhile, the air in the oil inlet flows into the cylinder body and then flows out along the oil outlet, the high-pressure gas flows along the axial plunger pump body 24, the two air inlet cavities 3 and the U-shaped communicating pipe 61, at the moment, the numerical value of the pressure detector 36 on the two air inlet cavities 3 is observed, if the numerical value is unchanged, the tightness between the cylinder body and the plunger can be judged to be good, and if the numerical value is changed, leakage occurs between the cylinder body and the plunger, the air tightness detection device of the axial plunger pump can respectively detect the tightness of the cavity on the oil inlet side of the axial plunger pump body 24, the cavity on the oil outlet side and the cylinder body, and meanwhile, the leakage position can be accurately found, the damage to the axial plunger pump body 24 can not be caused in the detection process, and the detection is accurate and the efficiency is high.
Working principle: when the air tightness detection needs to be carried out on the axial plunger pump body 24, the axial plunger pump body 24 is placed on the bottom plate 1, the transmission shaft of the axial plunger pump body 24 is abutted with the motor shaft of the driving motor 13, at the moment, the two moving plates 2 are driven to be close to each other by the extension of the inner rods of the two first telescopic cylinders 22, the moving plates 2 drive the dovetail sliding plates 21 to slide along the dovetail grooves 11, so that the two moving plates 2 drive the two clamping parts 23 to stably move close to each other, the axial plunger pump body 24 is clamped and fixed by the two clamping parts 23, simultaneously, the two clamping mechanisms drive the two inflating assemblies and the two sealing mechanisms to be close to the axial plunger pump body 24, the two air outlet pipes 35 and the two convex air bags 51 are respectively inserted into the oil inlet and the oil outlet of the axial plunger pump body 24, and the two sealing covers 5 are respectively sleeved on the oil inlet and the oil outlet of the axial plunger pump body 24, when the tightness of the axial plunger pump body 24 is required to be detected, the air pump 34 on the side surface of the oil inlet of the axial plunger pump body 24 is inflated firstly, high-pressure air is respectively introduced into the air inlet pipe 33 and the air inlet hose 52, the high-pressure air enters the convex air bag 51 through the air inlet hose 52, the convex air bag 51 is inflated to seal the oil inlet of the axial plunger pump body 24, meanwhile, the air inlet pipe 33 introduces the high-pressure air into the air inlet cavity 3, the high-pressure air pushes the sealing plug 43 to be firmly inserted into the abutting groove 31, so as to seal the abutting groove 31, meanwhile, the high-pressure air flows into the oil inlet and the inner cavity of the axial plunger pump body 24 through the air outlet pipe 35, and then ventilation is stopped after the air pressure of the inner cavity of the axial plunger pump body 24 reaches a certain value, and then the air is kept still for a period of time through the observation pressure detector 36, if the value on the pressure detector 36 is not changed, it can be determined that the sealing performance of the cavity on the oil inlet side of the axial plunger pump body 24 is good, otherwise, the sealing performance of the cavity on the oil outlet side of the axial plunger pump body 24 is not good, at the same time, the cavity on the oil outlet side of the axial plunger pump body 24 is filled with high-pressure gas for detection according to the same operation, and meanwhile, the high-pressure gas in the cavity on the oil inlet side of the axial plunger pump body 24 is exhausted, at the same time, if the value on the pressure detector 36 is not changed, it can be determined that the sealing performance of the cavity on the oil outlet side of the axial plunger pump body 24 is good, otherwise, the sealing performance of the cavity on the oil inlet side of the axial plunger pump body 24 and the cavity on the oil outlet side of the axial plunger pump body 24 can be detected; the U-shaped communicating pipe 61 is led to move downwards through the downward extension of the inner rod of the second telescopic cylinder 6, the U-shaped communicating pipe 61 drives the round pipe 7 to be inserted into the butt joint groove 31 at the upper end of the air inlet cavity 3, the annular pressing plate 72 is tightly attached to the upper end of the air inlet cavity 3, the lower end of the fan-shaped pressing plate 75 pushes the sealing plug 43 to move downwards, the sealing plug 43 is led to move out of the butt joint groove 31, at the moment, the two air pumps 34 are led with high-pressure air into the two air inlet cavities 3, the high-pressure air is respectively led into the oil inlet and the oil outlet of the axial plunger pump body 24, the high-pressure air is led into the U-shaped communicating pipe 61 through the round pipe 7, so that the two air inlet cavities 3 are communicated, the high-pressure air flows into the annular air bag 73 through the air vent groove 71, the annular air bag 73 is inflated, the round pipe 7 is connected with the air inlet cavity 3 in a sealing way through the annular pressing plate 72, the annular air bag 73 and the sealing gasket 74, when the air pressure reaches a certain value, the two air pumps 34 are stopped to be inflated, at the moment, the driving motor 13 drives the transmission shaft of the axial plunger pump body 24 to rotate, so that the plunger in the axial plunger pump body 24 slides along the cylinder body, and meanwhile, the air in the oil inlet flows into the cylinder body and flows out along the oil outlet, the high-pressure air flows along the axial plunger pump body 24, between the two air inlet cavities 3 and the U-shaped communicating pipe 61, at the moment, the value of the pressure detector 36 on the two air inlet cavities 3 is observed, if the value is unchanged, the tightness between the cylinder body and the plunger is judged to be good, if the value is unchanged, leakage occurs between the cylinder body and the plunger, and the leakage position can be accurately found through the leak detection of the cavity on the oil inlet side of the axial plunger pump body 24, the cavity on the oil outlet side and the cylinder body respectively, and the axial plunger pump body 24 can not be damaged in the detection process, so that the detection is accurate and the efficiency is high.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an axial plunger pump's gas tightness detection device, includes bottom plate (1), concave type backup pad (12) and driving motor (13), its characterized in that: the upper end of bottom plate (1) straddles and is provided with concave type backup pad (12), two tip downward and bottom plate (1) fixed connection of concave type backup pad (12), two dovetail grooves (11) have been seted up to the upper end bilateral symmetry of bottom plate (1), and fixed mounting has driving motor (13) between two dovetail grooves (11) in the upper end of bottom plate (1), the top of bottom plate (1) is provided with two fixture in the inboard symmetry of concave type backup pad (12), installs axial plunger pump body (24) between two fixture, and the transmission shaft of axial plunger pump body (24) is docked with the motor shaft of driving motor (13), all installs the inflation subassembly on two fixture, the sealing mechanism of axial plunger pump body (24) business turn over hydraulic fluid port is installed to the side of inflation subassembly on the fixture, the upper end of concave type backup pad (12) is provided with the intercommunication mechanism that is used for two inflation subassemblies.
2. The air tightness detection device of an axial plunger pump according to claim 1, wherein: the clamping mechanism comprises two moving plates (2) which are arranged on a bottom plate (1) in bilateral symmetry, a dovetail-shaped sliding plate (21) which is arranged at the lower end of the moving plate (2), a first telescopic cylinder (22) which is arranged at one end of the moving plate (2), and a clamping part (23) which is arranged on the side face of the moving plate (2), wherein the moving plate (2) is fixedly connected with the dovetail-shaped sliding plate (21) and the first telescopic cylinder (22) respectively, and the first telescopic cylinder (22) is fixedly connected with the side wall of the concave-shaped supporting plate (12).
3. The air tightness detection device of an axial plunger pump according to claim 2, wherein: the clamping component (23) is connected with the movable plate (2) through a connecting frame, the connecting frame is fixedly connected with the movable plate (2) and the clamping component (23) respectively, a protection pad is fixedly connected with the inner side of the clamping component (23), and the dovetail sliding plate (21) is in sliding connection with the dovetail groove (11).
4. The air tightness detection device of an axial plunger pump according to claim 2, wherein: the air charging assembly comprises an air inlet cavity (3) arranged at the upper end of the movable plate (2), a transverse plate (32) transversely arranged in the inner cavity of the air inlet cavity (3), an air inlet pipe (33) and an air outlet pipe (35) symmetrically arranged on two side walls of the air inlet cavity (3), an air pump (34) arranged at one end of the air inlet pipe (33) and a pressure detector (36) arranged on the side face of the air inlet cavity (3), a butt joint groove (31) is formed in the upper end of the air inlet cavity (3), and a sealing assembly for the butt joint groove (31) is arranged in the inner cavity of the air inlet cavity (3) on the transverse plate (32);
The sealing assembly comprises a guide polish rod (4) arranged on the transverse plate (32), a limiting ring (41) arranged at the lower end of the guide polish rod (4), a sealing spring (42) arranged on the guide polish rod (4) and a sealing plug (43) arranged at the upper end of the guide polish rod (4) and used for sealing the butt joint groove (31).
5. The air tightness detection device of an axial plunger pump according to claim 4, wherein: the utility model discloses a plunger pump, including air inlet cavity (3), air pump (34), air inlet cavity (33), air outlet pipe (35) and pressure detector (36), wherein air inlet pipe (33), air outlet pipe (35) and pressure detector (36) one end all with the inner chamber intercommunication of air inlet cavity (3), air inlet cavity (3) was kept away from to air inlet pipe (33) one end and air pump (34) are connected through the coupling, air pump (34) and movable plate (2) fixed connection, in the business turn over hydraulic fluid mouth of axial plunger pump body (24) is inserted to one end of air outlet pipe (35).
6. The air tightness detection device of an axial plunger pump according to claim 4, wherein: the lower extreme of direction polished rod (4) passes diaphragm (32) and spacing ring (41) fixed connection, and the upper end and the sealing plug (43) fixed connection of direction polished rod (4), sealing spring (42) set up between diaphragm (32) and sealing plug (43), sealing plug (43) are pegged graft with docking groove (31).
7. The air tightness detection device of an axial plunger pump according to claim 4, wherein: sealing mechanism is including cover establish sealed lid (5) on outlet duct (35), set up in protruding type gasbag (51) of sealed lid (5) inner chamber to and set up in air inlet hose (52) that are used for intercommunication air pump (34) in protruding type gasbag (51) side, sealed lid (5) respectively with outlet duct (35) and protruding type gasbag (51) fixed connection, protruding type gasbag (51) cover is established on outlet duct (35), the one end and protruding type gasbag (51) fixed connection of air inlet hose (52), the other end of air inlet hose (52) passes the side of sealed lid (5) and is connected through the coupling with air pump (34).
8. The air tightness detection device of an axial plunger pump according to claim 7, wherein: the sealing cover (5) is sleeved on an oil inlet and outlet of the axial plunger pump body (24), the protruding part of the protruding type air bag (51) is inserted into the oil inlet and outlet of the axial plunger pump body (24), and the bottom of the protruding type air bag (51) is arranged between the sealing cover (5) and the end part of the oil inlet and outlet of the axial plunger pump body (24).
9. The air tightness detection device of an axial plunger pump according to claim 1, wherein: the utility model provides a set up in U type communicating pipe (61), set up in two pipe (7) of U type communicating pipe (61) of second telescopic cylinder (6) lower extreme including symmetry setting up on concave type backup pad (12), symmetry, annular clamp plate (72), annular gasbag (73) and sealed pad (74) of establishing in proper order on pipe (7) from top to bottom to and set up in two fan-shaped stripper plates (75) of pipe (7) lower extreme symmetrically, pipe (7) respectively with U type communicating pipe (61), annular clamp plate (72), annular gasbag (73), sealed pad (74) and fan-shaped stripper plate (75) fixed connection, second telescopic cylinder (6) fixed mounting is in the upper end of concave type backup pad (12), the inner rod of second telescopic cylinder (6) passes the upper end and the U type communicating pipe (61) fixed connection of concave type backup pad (12), the upper end and U type communicating pipe (61) inner chamber intercommunication of pipe (7), the lower extreme of pipe (7) has set up a plurality of ring-shaped members (71) and the ventilation groove (71) in the ventilation groove (71) outside of circular gasbag week (71).
10. The air tightness detection device of an axial plunger pump according to claim 9, wherein: the lower end of the round tube (7) is inserted into the butt joint groove (31), the annular air bag (73) and the sealing gasket (74) are inserted into the butt joint groove (31), the annular pressing plate (72) is tightly attached to the upper end of the butt joint groove (31), and the lower end of the fan-shaped pressing plate (75) penetrates through the butt joint groove (31) to be in pressing contact with the sealing plug (43).
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| CN202410135895.3A CN117990300B (en) | 2024-01-31 | 2024-01-31 | Air tightness detection device of axial plunger pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118464327A (en) * | 2024-07-11 | 2024-08-09 | 长春隆泰汽车部件有限公司 | Sealing performance test equipment for injection molding car lamp shell |
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| CN204556191U (en) * | 2015-04-28 | 2015-08-12 | 江西省和众汽车液压泵业有限公司 | A kind of automobile axial plunger pump pick-up unit |
| JP2023039411A (en) * | 2021-09-08 | 2023-03-20 | 燕山大学 | Stirring loss test device of rotation assembly inside axial plunger pump or motor |
| CN116878756A (en) * | 2023-07-13 | 2023-10-13 | 江苏恒源液压有限公司 | Axial plunger pump seal detection device |
| CN220380761U (en) * | 2023-07-28 | 2024-01-23 | 合肥南方新能源科技有限公司 | Testing device of industrial control equipment |
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2024
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204556191U (en) * | 2015-04-28 | 2015-08-12 | 江西省和众汽车液压泵业有限公司 | A kind of automobile axial plunger pump pick-up unit |
| JP2023039411A (en) * | 2021-09-08 | 2023-03-20 | 燕山大学 | Stirring loss test device of rotation assembly inside axial plunger pump or motor |
| CN116878756A (en) * | 2023-07-13 | 2023-10-13 | 江苏恒源液压有限公司 | Axial plunger pump seal detection device |
| CN220380761U (en) * | 2023-07-28 | 2024-01-23 | 合肥南方新能源科技有限公司 | Testing device of industrial control equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118464327A (en) * | 2024-07-11 | 2024-08-09 | 长春隆泰汽车部件有限公司 | Sealing performance test equipment for injection molding car lamp shell |
| CN118464327B (en) * | 2024-07-11 | 2024-09-10 | 长春隆泰汽车部件有限公司 | Sealing performance test equipment for injection molding car lamp shell |
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| CN117990300B (en) | 2024-07-02 |
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