CN106969888B - Engine leakage testing device and engine leakage testing system - Google Patents
Engine leakage testing device and engine leakage testing system Download PDFInfo
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- CN106969888B CN106969888B CN201710331139.8A CN201710331139A CN106969888B CN 106969888 B CN106969888 B CN 106969888B CN 201710331139 A CN201710331139 A CN 201710331139A CN 106969888 B CN106969888 B CN 106969888B
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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 engine detection equipment, in particular to an engine leakage testing device and an engine leakage testing system, which are designed for solving the problems of low detection efficiency and poor sensitivity of a hydraulic leakage testing method. The engine leakage testing device comprises a bottom plate, a sealing module and an air source, wherein the sealing module is arranged on the bottom plate, the air source is used for supplying air to the sealing module, and the sealing module comprises an air inlet sealing assembly, an oil tank balancer port sealing assembly, an air outlet sealing assembly and an oil tank port sealing assembly. The engine leakage test system comprises a control module for controlling an air source and the engine leakage test device. The engine leakage test device and the engine leakage test system are used for performing leakage test detection on the engine.
Description
Technical Field
The invention relates to the technical field of engine detection equipment, in particular to an engine leakage testing device and an engine leakage testing system.
Background
Due to factors such as component sand holes, sealing element quality and assembly quality in the engine manufacturing process, the phenomenon of three leakage (water leakage, air leakage and oil leakage) of the engine is frequently caused in an engine test, the appearance and performance of the engine are seriously affected, and the product quality of the engine is greatly reduced.
At present, a commonly adopted leak test method for an engine is a hydraulic leak test method. The hydraulic leak test method belongs to the range of the placement method, and the sensitivity of measurement can be improved to a certain extent by properly prolonging the leak test time. However, in mass production of engine parts, due to the limitation of the tact, the leak test time satisfying a certain sensitivity requirement cannot be ensured, and the detection efficiency is low. Moreover, the obvious leakage can be determined only when the part to be detected has serious defects and is subjected to spraying leakage or dripping leakage through the water pressure method detection. For some slight leaks, it is difficult to determine, and if the internal and external structures of the part are complex, the internal leakage cannot be detected.
Disclosure of Invention
The first object of the present invention is to provide an engine leakage test device, so as to solve the technical problems of low detection efficiency and poor sensitivity of the hydraulic leakage test method.
The invention provides an engine leakage testing device which comprises a bottom plate, a sealing module arranged on the bottom plate and an air source for supplying air to the sealing module.
The sealing module comprises an air inlet sealing assembly, an oil tank balancer port sealing assembly, an air outlet sealing assembly and an oil tank port sealing assembly.
The air inlet sealing assembly comprises a first mounting frame, a first air cylinder and a first blocking piece, wherein the first mounting frame is mounted on the bottom plate, the first air cylinder is mounted on the first mounting frame, and the first blocking piece is used for blocking an air inlet of an engine; the first blocking piece is fixedly connected with a piston rod of the first cylinder.
The oil tank balancer opening sealing assembly comprises a second mounting frame, a second air cylinder and a second blocking piece, wherein the second mounting frame is arranged on the bottom plate, the second air cylinder is arranged on the second mounting frame, and the second blocking piece is used for blocking the oil tank balancer opening; the second blocking piece is fixedly connected with a piston rod of the second cylinder.
The exhaust port sealing assembly comprises a third mounting frame, a third cylinder and a third blocking piece, wherein the third mounting frame is mounted on the bottom plate, the third cylinder is mounted on the third mounting frame, and the third blocking piece is used for blocking an exhaust port of the engine; the third blocking piece is fixedly connected with a piston rod of the third cylinder.
The oil tank port sealing assembly comprises a fourth mounting frame arranged on the bottom plate, a fourth air cylinder arranged on the fourth mounting frame and a fourth blocking piece for blocking the oil tank port; the fourth blocking piece is fixedly connected with a piston rod of the fourth cylinder.
And the fourth blocking piece is provided with an air injection port.
The first cylinder, the second cylinder, the third cylinder, the fourth cylinder and the gas injection port are communicated with the gas source.
Further, adjusting components are arranged between the first mounting frame and the bottom plate, between the second mounting frame and the bottom plate, between the third mounting frame and the bottom plate and between the fourth mounting frame and the bottom plate, and each adjusting component is used for adjusting the blocking positions of the first blocking piece, the second blocking piece, the third blocking piece and the fourth blocking piece.
Further, each adjusting component comprises a mounting seat, a supporting seat fixedly connected with the mounting seat, a first sliding groove arranged on the upper surface of the mounting seat, a sliding block used for sliding in the first sliding groove, an adjusting rod hinged with the sliding block and an adjusting screw used for limiting the sliding block.
The first mounting frame, the second mounting frame, the third mounting frame and the fourth mounting frame are hinged with the supporting seats respectively and are hinged with the adjusting rods respectively.
Further, a through second sliding groove is formed in the side face of the mounting seat, the adjusting screw sequentially penetrates through the second sliding groove, the sliding block and the adjusting rod, and a fastening nut is arranged at the penetrating end of the adjusting screw.
Further, in the adjusting component that first mounting bracket, second mounting bracket, third mounting bracket and fourth mounting bracket correspond respectively, adjust the pole and all be two, and all interval and symmetry set up on each mounting bracket.
Further, a plurality of grooves are formed in the bottom of the mounting seat, the bottom plate is provided with a protruding block matched with the groove in size, and the grooves can be spliced on the protruding block.
Further, the device also comprises two air source distributors, wherein both the air source distributors are communicated with the air source; each distribution port of one air source distributor is respectively communicated with the rodless cavity of the first air cylinder, the rodless cavity of the second air cylinder, the rodless cavity of the third air cylinder and the rodless cavity of the fourth air cylinder, and each distribution port of the other air source distributor is respectively communicated with the rod cavity of the first air cylinder, the rod cavity of the second air cylinder, the rod cavity of the third air cylinder and the rod cavity of the fourth air cylinder.
The engine leakage test device has the beneficial effects that:
through setting up bottom plate, seal module and air supply, wherein, seal module installs on the bottom plate, and the air supply is used for sealing the module air feed, and seal module specifically includes air inlet seal assembly, oil tank balancer mouth seal assembly, gas vent seal assembly and oil tank mouth seal assembly. The air inlet sealing assembly comprises a first mounting frame, a first air cylinder and a first blocking piece, wherein the first mounting frame is arranged on the bottom plate, the first air cylinder is arranged on the first mounting frame, and the first blocking piece is fixedly connected with a piston rod of the first air cylinder and used for blocking an air inlet of the engine. The structure and installation modes of the oil tank balancer port sealing assembly, the exhaust port sealing assembly and the oil tank port sealing assembly are similar to those of the air inlet sealing assembly, and are not repeated here. And the fourth blocking piece is provided with an air injection port, and the first cylinder, the second cylinder, the third cylinder, the fourth cylinder and the air injection port are communicated with an air source.
The leak test working process of the engine leak test device comprises the following steps: when the leakage condition of the engine is required to be detected, an air source is started, the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are controlled to act, so that the piston rod extends out, and the air inlet, the oil tank balancer port, the air outlet and the oil tank port of the engine to be detected are blocked by the first blocking piece, the second blocking piece, the third blocking piece and the fourth blocking piece respectively; then, air is introduced into the engine through the injection hole, after air is introduced for a period of time, the ventilation is stopped, and the pressure is maintained for a period of time; then, the leakage condition of the engine is judged by the air pressure change in the engine.
The leakage testing device of the engine judges whether the leakage of the engine meets the requirement or not through the change condition of the air pressure, shortens the leakage testing time to a certain extent, and accordingly improves the leakage testing efficiency of the engine. Moreover, the engine leakage testing device utilizes the air source to detect, so that the engine leakage testing device has better adaptability and higher detection sensitivity for some slight leakage defects. In addition, the engine leakage test device is simple in principle, easy to realize and high in market economic value.
The second object of the present invention is to provide an engine leakage test system, so as to solve the technical problems of low detection efficiency and poor sensitivity of the hydraulic leakage test method.
The engine leakage test system provided by the invention comprises a control module for controlling the air source and the engine leakage test device.
And a display screen for displaying the leakage condition of the engine is arranged on the control module.
Further, the device also comprises a pressure reducer arranged on the gas supply pipeline.
The pressure reducer is fixedly arranged outside the control module.
Further, the device also comprises an oil-water separator arranged on the air supply pipeline.
The oil-water separator is arranged between the air source and the pressure reducer, and is fixedly arranged outside the control module.
The engine leakage test system has the beneficial effects that:
the control module and the engine leakage test device are arranged in the engine leakage test system, the control module is used for controlling the action of an air source, the control module is further provided with a display screen, and the leakage condition of the engine is displayed through the display screen. The structure, the working principle and the beneficial effects of the engine leakage test device are described in detail in the beneficial effects of the engine leakage test device, and are not described in detail herein.
The engine leakage test system utilizes the control module to control the air source in an action mode, and meanwhile, the air pressure change condition inside the engine detected by the engine leakage test device is displayed on the display screen, so that an operator can intuitively see the leakage condition of the engine, and the unqualified products can be repaired in time.
The engine leakage test system improves the leakage test efficiency of the engine, and has better detection sensitivity for some tiny and slight leakage defects. In addition, the engine leakage test system is compact in structure, convenient to operate and high in market competitiveness.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings needed in the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic top view of an engine leak testing system according to an embodiment of the present invention, wherein an adjustment assembly is not shown;
FIG. 2 is a schematic diagram of an engine leak test system according to an embodiment of the present invention, wherein an adjustment assembly is not shown;
FIG. 3 is a schematic front view of an adjusting assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of the right-hand view partially in section of FIG. 3;
fig. 5 is a schematic top view of fig. 3.
Icon: 10-a control module; 20-a bottom plate; 30-sealing the module; 40-an engine fixing seat; 50-air source distributor; 60-an oil-water separator; 70-an air supply pipeline; 80-pressure reducer; 90-an adjustment assembly; 31-an air inlet seal assembly; 32-a tank balancer port seal assembly; 33-an exhaust port seal assembly; 34-tank port seal assembly; 311-a first cylinder; 312-a first mount; 313-first plug; 321-a second cylinder; 322-a second mount; 323-second plug; 331-third cylinder; 332-a third mount; 333-third plug; 341-fourth cylinder; 342-fourth mount; 343-fourth plug; 344-an air injection port; 91-a supporting seat; 92-mounting seats; 93-adjusting the rod; 94-a slider; 95-adjusting the screw; 96-first sliding grooves; 97-second chute.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 and 2, the present embodiment provides an engine leakage test apparatus including a base plate 20, a sealing module 30 mounted on the base plate 20, and a gas source for supplying gas to the sealing module 30. The seal module 30 includes an air inlet seal assembly 31, a tank balancer port seal assembly 32, an air outlet seal assembly 33, and a tank port seal assembly 34.
Specifically, in this embodiment, the air inlet sealing assembly 31 includes a first mounting frame 312 mounted on the base plate 20, a first cylinder 311 mounted on the first mounting frame 312, and a first blocking member 313 for blocking an air inlet of the engine, where the first blocking member 313 is fixedly connected with a piston rod of the first cylinder 311; the oil tank balancer port sealing assembly 32 comprises a second mounting frame 322 mounted on the bottom plate 20, a second air cylinder 321 mounted on the second mounting frame 322 and a second blocking piece 323 for blocking the oil tank balancer port, wherein the second blocking piece 323 is fixedly connected with a piston rod of the second air cylinder 321; the exhaust port sealing assembly 33 comprises a third mounting frame 332 mounted on the bottom plate 20, a third cylinder 331 mounted on the third mounting frame 332 and a third blocking member 333 for blocking an exhaust port of the engine, wherein the third blocking member 333 is fixedly connected with a piston rod of the third cylinder 331; the tank port sealing assembly 34 comprises a fourth mounting frame 342 mounted on the bottom plate 20, a fourth air cylinder 341 mounted on the fourth mounting frame 342, and a fourth blocking member 343 for blocking the tank port, wherein the fourth blocking member 343 is fixedly connected with a piston rod of the fourth air cylinder 341. The fourth blocking member 343 is provided with an air injection port 344, and the first cylinder 311, the second cylinder 321, the third cylinder 331, the fourth cylinder 341, and the air injection port 344 are all communicated with an air source.
The leak test working process of the engine leak test device comprises the following steps: when the leakage condition of the engine needs to be detected, an air source is started, the first cylinder 311, the second cylinder 321, the third cylinder 331 and the fourth cylinder 341 are controlled to act, so that piston rods extend, and an air inlet, an oil tank balancer port, an air outlet and an oil tank port of the engine to be detected are blocked by the first blocking piece 313, the second blocking piece 323, the third blocking piece 333 and the fourth blocking piece 343 respectively; then, air is introduced into the engine through the injection hole, after air is introduced for a period of time, the ventilation is stopped, and the pressure is maintained for a period of time; then, the leakage condition of the engine is judged by the air pressure change in the engine. In the present embodiment, the intake time may be set to three seconds and the dwell time may be set to five seconds.
The leakage testing device of the engine judges whether the leakage of the engine meets the requirement or not through the change condition of the air pressure, shortens the leakage testing time to a certain extent, and accordingly improves the leakage testing efficiency of the engine. Moreover, the engine leakage testing device utilizes the air source to detect, so that the engine leakage testing device has better adaptability and higher detection sensitivity for some slight leakage defects. In addition, the engine leakage test device is simple in principle, easy to realize and high in market economic value.
With continued reference to fig. 1 and 2, in order to better limit the engine, in this embodiment, an engine fixing seat 40 may be further disposed on the base plate 20.
In this embodiment, the adjusting assemblies 90 may be disposed between the first mounting frame 312 and the bottom plate 20, between the second mounting frame 322 and the bottom plate 20, between the third mounting frame 332 and the bottom plate 20, and between the fourth mounting frame 342 and the bottom plate 20, and each adjusting assembly 90 is used for adjusting the plugging positions of the first plugging member 313, the second plugging member 323, the third plugging member 333, and the fourth plugging member 343, respectively.
Since the structure, the setting position and the adjustment principle of each adjustment assembly 90 are the same, in the following text of the embodiment, only the adjustment assembly 90 for adjusting the plugging position of the first plugging member 313 is described in detail, and the adjustment process of other adjustment assemblies 90 is not described again.
As shown in fig. 3 to 5, in particular, in this embodiment, the adjusting assembly 90 includes a mounting base 92, a supporting base 91 fixedly connected to the mounting base 92, a first sliding slot 96 disposed on an upper surface of the mounting base 92, a sliding block 94 for sliding in the first sliding slot 96, an adjusting rod 93 hinged to the sliding block 94, and an adjusting screw 95 for limiting the sliding block 94. The first mounting frame 312 is hinged to the supporting seat 91, and the first mounting frame 312 is hinged to the adjusting rod 93. The side of mount pad 92 is provided with the second spout 97 that link up, and adjusting screw 95 passes second spout 97, slider 94 and regulation pole 93 setting in proper order, and the wearing out end of adjusting screw 95 is provided with fastening nut. Specifically, in this embodiment, the adjusting screw 95 is sleeved in the second sliding groove 97, the hinge hole of the sliding block 94 and the hinge hole of the adjusting rod 93, and when the fastening nut is loosened, the adjusting rod 93 can rotate relative to the sliding block 94 with the adjusting screw 95 as a rotation center.
The adjustment principle of the adjustment assembly 90 is as follows: when the pitch angle of the first mount 312 is to be adjusted, the adjustment screw 95 is unscrewed, releasing the slide 94 and allowing it to move in the first runner 96; when the appropriate pitch angle is selected, the adjustment screw 95 is tightened to fix the slider 94, thereby effecting adjustment of the pitch angle of the first mount 312.
The adjusting assembly 90 can adjust the pitching angle of the first mounting frame 312 only through unscrewing and screwing processes of the adjusting screw 95, so that the first blocking member 313 can better seal an air inlet of the engine, and poor accuracy of detection results caused by loose sealing of the first blocking member 313 is reduced.
In the present embodiment, the fixing manner of the slider 94 may be the manner of providing the adjusting screw 95 on the side surface of the mounting base 92, but not limited to this structure, other fixing manners may be adopted, such as: a plurality of limiting holes are formed in the surface of the first sliding groove 96 at intervals, and after the pitching angle of the first mounting frame 312 is adjusted, limiting pins can be inserted into the limiting holes on the right side of the sliding block 94 and nearest to the sliding block, so that the position of the sliding block 94 is fixed, and the first mounting frame 312 is fixed at the required pitching angle.
In the adjusting assemblies 90 corresponding to the first mounting frame 312, the second mounting frame 322, the third mounting frame 332 and the fourth mounting frame 342, the adjusting rods 93 are two, and are arranged on each mounting frame at intervals and symmetrically.
Specifically, in the adjustment assembly 90 shown in fig. 4 and 5, two adjustment rods 93 are provided on the first mounting frame 312, and the two adjustment rods 93 are provided on the first mounting frame 312 at intervals and symmetrically. Similarly, the second mounting frame 322 is also provided with two adjusting rods 93, and the two adjusting rods 93 are arranged on the second mounting frame 322 at intervals and symmetrically; the third mounting frame 332 is also provided with two adjusting rods 93, and the two adjusting rods 93 are arranged on the third mounting frame 332 at intervals and symmetrically; two adjusting rods 93 are also provided on the fourth mounting frame 342, and the two adjusting rods 93 are provided on the fourth mounting frame 342 at intervals and symmetrically.
When the pitch angle of the first mounting frame 312 needs to be adjusted, the adjusting screws 95 at the bottom of each adjusting rod 93 can be released one by one, so that the sliding blocks 94 corresponding to the adjusting screws 95 are released, and the angle adjustment of the first mounting frame 312 is completed. The angular adjustment process for the second mount 322, the third mount 332, and the fourth mount 342 is similar to the adjustment process for the first mount 312 described above, and will not be repeated here.
In this embodiment, the two adjusting rods 93 are provided to support the first mounting frame 312, so that the stress condition of the first mounting frame 312 in this embodiment is greatly improved, and the working stability of the first cylinder 311 is higher. Meanwhile, by arranging the two adjusting rods 93 at intervals, the first air cylinder 311 can act in the space formed between the two adjusting rods 93, so that the acting space of the first air cylinder 311 is increased, and the interference condition is avoided to a certain extent.
It should be noted that, in this embodiment, a plurality of grooves may be further disposed at the bottom of the mounting base 92, and a bump having a size matching that of the grooves may be disposed on the bottom plate 20, where the grooves may be plugged into the bumps.
When the positions of the air inlet, the oil tank balancer port, the air outlet and the oil tank port are changed along with the change of the type and the specification of the engine to be detected, the insertion fit of the convex blocks and the grooves can be utilized to adjust the fixed position of the mounting seat 92 on the bottom plate 20, so that the adjustment of the horizontal positions of the air inlet sealing assembly 31, the oil tank balancer port sealing assembly 32, the air outlet sealing assembly 33 and the oil tank port sealing assembly 34 is realized, and the detection requirements of engines with different specifications are met.
With continued reference to fig. 1 and 2, in this embodiment, the engine leakage test device may further include two air source distributors 50, where both air source distributors 50 are in communication with an air source. And, each of the dispensing ports of one of the air source dispensers 50 communicates with the rodless chamber of the first cylinder 311, the rodless chamber of the second cylinder 321, the rodless chamber of the third cylinder 331, and the rodless chamber of the fourth cylinder 341, respectively, and each of the dispensing ports of the other air source dispenser 50 communicates with the rod chamber of the first cylinder 311, the rod chamber of the second cylinder 321, the rod chamber of the third cylinder 331, and the rod chamber of the fourth cylinder 341, respectively.
When the engine leakage test device works, after the air source is connected, the piston rods of the first air cylinder 311, the second air cylinder 321, the third air cylinder 331 and the fourth air cylinder 341 can simultaneously extend or retract under the action of the two air source distributors 50, so that the air inlet, the oil tank balancer port, the air outlet and the oil tank port are plugged or released simultaneously, the consistency of working procedure actions is ensured, and meanwhile, the leakage test efficiency of the engine leakage test device in the embodiment is greatly improved.
With continued reference to fig. 1 and fig. 2, the present embodiment further provides an engine leakage test system, which includes a control module 10 for controlling an air source and the engine leakage test device, where the control module 10 is provided with a display screen for displaying the leakage condition of the engine. The structure, the working principle and the beneficial effects of the engine leakage test device are described in detail in the beneficial effects of the engine leakage test device, and are not described in detail herein.
The engine leakage test system utilizes the control module 10 to control the action of the air source, and simultaneously displays the air pressure change condition inside the engine detected by the engine leakage test device on the display screen, so that operators can intuitively see the leakage condition of the engine, and the unqualified products can be repaired in time.
The engine leakage test system improves the leakage test efficiency of the engine, and has better detection sensitivity for some tiny and slight leakage defects. In addition, the engine leakage test system is compact in structure, convenient to operate and high in market competitiveness.
With continued reference to fig. 1 and 2, in this embodiment, the engine leakage test system may further include a pressure reducer 80 disposed on the air supply line 70. Specifically, the pressure reducer 80 is fixedly disposed outside the control module 10. An operator can reduce the high pressure gas in the gas source to a low pressure gas by using the pressure reducer 80, and keep the pressure and flow rate of the output gas stable.
With continued reference to fig. 1 and 2, in the present embodiment, the engine leakage test system may further include an oil-water separator 60 disposed on the air supply line 70. Specifically, the oil-water separator 60 is disposed between the air source and the pressure reducer 80, and the oil-water separator 60 is fixedly disposed outside the control module 10.
By arranging the oil-water separator 60 on the air supply pipeline 70 between the air source and the pressure reducer 80, the air output by the air source can be filtered to be cleaner, so that the pollution to the engine in the engine leakage test process is reduced, the accuracy of the leakage test result is improved, and the oil-water separator 60 can also realize the aim of pre-regulating the air output by the air source.
In this embodiment, an indicator light may be further disposed on the control module 10, and specifically, the indicator light may be a green indicator light and a red indicator light. When the control module 10 detects that the leakage quantity of the engine meets the requirement, a green indicator light is lightened, and the engine is displayed to pass; when the control module 10 detects that the leakage amount of the engine is not satisfactory, the red indicator light is on, and the display is failed.
In this embodiment, the air source may be an air pump or an air compressor.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. An engine leakage test device is characterized by comprising a bottom plate (20), a sealing module (30) arranged on the bottom plate (20) and a gas source for supplying gas to the sealing module (30);
the sealing module (30) comprises an air inlet sealing assembly (31), an oil tank balancer port sealing assembly (32), an air outlet sealing assembly (33) and an oil tank port sealing assembly (34);
the air inlet sealing assembly (31) comprises a first mounting frame (312) mounted on the base plate (20), a first air cylinder (311) mounted on the first mounting frame (312) and a first blocking piece (313) for blocking an air inlet of the engine; the first blocking piece (313) is fixedly connected with a piston rod of the first cylinder (311);
the oil tank balancer opening sealing assembly (32) comprises a second mounting frame (322) arranged on the bottom plate (20), a second air cylinder (321) arranged on the second mounting frame (322) and a second blocking piece (323) for blocking the oil tank balancer opening; the second blocking piece (323) is fixedly connected with a piston rod of the second cylinder (321);
the exhaust port sealing assembly (33) comprises a third mounting frame (332) mounted on the bottom plate (20), a third air cylinder (331) mounted on the third mounting frame (332), and a third blocking piece (333) for blocking an exhaust port of the engine; the third blocking piece (333) is fixedly connected with a piston rod of the third cylinder (331);
the oil tank port sealing assembly (34) comprises a fourth mounting frame (342) mounted on the bottom plate (20), a fourth air cylinder (341) mounted on the fourth mounting frame (342) and a fourth blocking piece (343) for blocking the oil tank port; the fourth blocking piece (343) is fixedly connected with a piston rod of the fourth cylinder (341);
the fourth blocking piece (343) is provided with an air injection port (344);
the first cylinder (311), the second cylinder (321), the third cylinder (331), the fourth cylinder (341) and the gas injection port (344) are communicated with the gas source;
opening an air source, controlling the first cylinder, the second cylinder, the third cylinder and the fourth cylinder to act, enabling the piston rod to extend out, and blocking an air inlet, an oil tank balancer port, an air outlet and an oil tank port of an engine to be detected by utilizing the first blocking piece, the second blocking piece, the third blocking piece and the fourth blocking piece; then, air is introduced into the engine by using the air injection port for three seconds, the ventilation is stopped, and the pressure is maintained for five seconds; the leakage condition of the engine is judged by the air pressure change in the engine.
2. The engine leakage testing device according to claim 1, wherein adjustment assemblies (90) are provided between the first mounting frame (312) and the base plate (20), between the second mounting frame (322) and the base plate (20), between the third mounting frame (332) and the base plate (20) and between the fourth mounting frame (342) and the base plate (20), and each adjustment assembly (90) is used for adjusting the blocking positions of the first blocking member (313), the second blocking member (323), the third blocking member (333) and the fourth blocking member (343), respectively.
3. The engine leakage test device according to claim 2, wherein each of the adjustment assemblies (90) includes a mounting base (92), a supporting base (91) fixedly connected with the mounting base (92), a first sliding groove (96) provided on an upper surface of the mounting base (92), a slider (94) for sliding in the first sliding groove (96), an adjustment lever (93) hinged with the slider (94), and an adjustment screw (95) for limiting the slider (94);
the first mounting frame (312), the second mounting frame (322), the third mounting frame (332) and the fourth mounting frame (342) are hinged with the supporting seats (91) respectively and are hinged with the adjusting rods (93).
4. The engine leakage testing device according to claim 3, wherein a through second sliding groove (97) is formed in the side surface of the mounting seat (92), the adjusting screw (95) sequentially penetrates through the second sliding groove (97), the sliding block (94) and the adjusting rod (93), and a fastening nut is arranged at the penetrating end of the adjusting screw (95).
5. The engine leakage testing device according to claim 4, wherein in the adjusting assemblies (90) corresponding to the first mounting frame (312), the second mounting frame (322), the third mounting frame (332) and the fourth mounting frame (342), the adjusting rods (93) are two, and are arranged on each mounting frame at intervals and symmetrically.
6. The engine leakage testing device according to claim 5, wherein a plurality of grooves are provided in the bottom of the mounting base (92), the bottom plate (20) is provided with a projection matching the groove in size, and the grooves can be inserted into the projection.
7. The engine leak testing apparatus of any one of claims 1-6, further comprising two air source distributors (50), both of the air source distributors (50) being in communication with the air source; one of the distribution ports of the air source distributor (50) is respectively communicated with the rodless cavity of the first air cylinder (311), the rodless cavity of the second air cylinder (321), the rodless cavity of the third air cylinder (331) and the rodless cavity of the fourth air cylinder (341), and the other distribution port of the air source distributor (50) is respectively communicated with the rod cavity of the first air cylinder (311), the rod cavity of the second air cylinder (321), the rod cavity of the third air cylinder (331) and the rod cavity of the fourth air cylinder (341).
8. An engine leak testing system comprising a control module (10) for controlling the air supply and an engine leak testing apparatus according to any one of claims 1-7;
the control module (10) is provided with a display screen for displaying the leakage condition of the engine.
9. The engine leak testing system of claim 8, further comprising a pressure reducer (80) disposed on the air supply line (70);
the pressure reducer (80) is fixedly arranged outside the control module (10).
10. The engine leak testing system of claim 9, further comprising an oil-water separator (60) disposed on the air supply line (70);
the oil-water separator (60) is arranged between the air source and the pressure reducer (80), and the oil-water separator (60) is fixedly arranged outside the control module (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710331139.8A CN106969888B (en) | 2017-05-11 | 2017-05-11 | Engine leakage testing device and engine leakage testing system |
Applications Claiming Priority (1)
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| CN112304534B (en) * | 2020-09-28 | 2022-08-02 | 中国石油天然气集团有限公司 | Oil casing pipe simulation sealing test device and test method |
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| CN103308315A (en) * | 2012-03-12 | 2013-09-18 | 上海华依科技发展有限公司 | Intake/exhaust plugging mechanism for testing intake/exhaust pressure of engine of general motor vehicle |
| CN204346658U (en) * | 2015-01-26 | 2015-05-20 | 国家气动产品质量监督检验中心 | Cylinder impermeability device for fast detecting |
| CN205262699U (en) * | 2015-12-25 | 2016-05-25 | 永康市倍力工具有限公司 | Lawn mower engine leakage -testing device |
| CN205545097U (en) * | 2016-04-12 | 2016-08-31 | 乐山师范学院 | Photovoltaic support with adjustable angle |
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| US7367220B2 (en) * | 2006-01-05 | 2008-05-06 | Honda Motor Co., Ltd. | Engine oil leak test method with EGR valve leak offset |
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| CN103308315A (en) * | 2012-03-12 | 2013-09-18 | 上海华依科技发展有限公司 | Intake/exhaust plugging mechanism for testing intake/exhaust pressure of engine of general motor vehicle |
| CN204346658U (en) * | 2015-01-26 | 2015-05-20 | 国家气动产品质量监督检验中心 | Cylinder impermeability device for fast detecting |
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