CN213658179U - Sealed oil circuit structure that detects - Google Patents
Sealed oil circuit structure that detects Download PDFInfo
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- CN213658179U CN213658179U CN202022628622.2U CN202022628622U CN213658179U CN 213658179 U CN213658179 U CN 213658179U CN 202022628622 U CN202022628622 U CN 202022628622U CN 213658179 U CN213658179 U CN 213658179U
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Abstract
The utility model discloses a sealing detection oil path structure, which comprises an internal pressurization path and an external oil adding and discharging path which are connected with an air source, wherein the internal pressurization path comprises a high-low pressure switching path and a gas-oil switching path, and the outlet end of the high-low pressure switching path is connected with the inlet end of the gas-oil switching path; the external oil adding and discharging passage comprises an oil adding and discharging on-off control passage and an oil adding and discharging supply passage, the inlet ends of which are connected in parallel, the outlet end of the oil adding and discharging supply passage is communicated with the outlet end of the gas oil switching passage, and the oil adding and discharging on-off control passage is used for controlling the on-off of the outlet end of the oil adding and discharging supply passage; the utility model discloses have the nimble switching that can carry out atmospheric pressure leakproofness test, oil pressure leakproofness test, high accuracy test, low accuracy test, the different leakproofness test demands of the part that awaits measuring of compatible satisfaction, have easy operation and convenient to use's beneficial effect.
Description
Technical Field
The utility model belongs to the technical field of leakproofness check out test set, concretely relates to sealed oil circuit structure that detects.
Background
In the industrial field, the tightness of produced products is generally detected, and some products are detected by air pressure and oil pressure. In addition, when the sealing performance is detected, high-precision low-pressure detection and low-precision high-pressure detection are required, and the detection requirements cannot be met by the conventional detection device. The defect that can not carry out the nimble switching between atmospheric pressure detection, oil pressure detection, high accuracy detection, the low accuracy detection to the existence of current leakproofness detection device, the utility model discloses a sealed oil circuit structure that detects.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sealed oil circuit structure that detects realizes the difference to the leakproofness test demand that different parts that await measuring need, carries out the nimble switching of atmospheric pressure leakproofness test, oil pressure leakproofness test, high accuracy test, low accuracy test.
The utility model discloses a following technical scheme realizes:
a sealing detection oil way structure comprises an internal pressurization channel and an external oil adding and discharging channel which are connected with an air source, wherein the internal pressurization channel comprises a high-low pressure switching channel and a gas-oil switching channel, and the outlet end of the high-low pressure switching channel is connected with the inlet end of the gas-oil switching channel; the external oil adding and discharging passage comprises an oil adding and discharging on-off control passage and an oil adding and discharging supply passage, the oil adding and discharging on-off control passage and the oil adding and discharging supply passage are connected in parallel, the outlet end of the oil adding and discharging supply passage is communicated with the outlet end of the gas oil switching passage, and the oil adding and discharging on-off control passage is used for controlling the on-off of the outlet end of the oil adding and discharging supply passage; the oil adding and discharging supply passage comprises an oil adding and discharging supply three-position four-way valve, an oil storage tank, a fuel pipeline and a fuel container, wherein the inlet end of the oil adding and discharging supply three-position four-way valve is connected with an air source, the outlet end of the oil adding and discharging supply three-position four-way valve is connected with the inlet end of the oil storage tank, the outlet end of the oil storage tank is connected with the fuel container through the fuel pipeline, and the fuel container is arranged corresponding to the outlet end of the gas-oil switching passage; the oil adding and discharging on-off control passage is used for controlling the on-off of a fuel oil pipeline.
The air source is connected with the inlet end of the high-low pressure switching passage, and switching of the air source between high-pressure ventilation and low-pressure ventilation is achieved through switching of the high-low pressure switching passage, so that switching of high-pressure tightness detection and low-pressure tightness detection is conducted on parts. The outlet end of the high-low pressure switching passage is connected with the inlet end of the gas-oil switching passage, the outlet end of the gas-oil switching passage is connected with a part to be tested, the part is ventilated and the part is ventilated through the gas-oil switching passage, and the part is switched between oil ventilation and oil ventilation, so that the part is switched between the ventilation tightness test and the oil ventilation tightness test.
The air source synchronously ventilates the external oil adding and discharging passage, the external oil adding and discharging passage comprises an oil adding and discharging on-off control passage and an oil adding and discharging supply passage, the inlet ends of the oil adding and discharging on-off control passage and the oil adding and discharging supply passage are connected in parallel, the outlet end of the oil adding and discharging supply passage is arranged corresponding to the outlet end of the gas-oil switching passage, the oil adding and discharging supply passage is driven by the air source to supply oil to the outlet end of the gas-oil switching passage so as to immerse the part to be tested, and if the part to be tested is switched to a ventilation test through the gas-oil switching passage, whether bubbles are generated in the oil immersing the part to be tested is observed to judge the tightness of the part to be tested; and if the part to be tested is switched to the oil through test through the gas-oil switching passage, judging the tightness of the part to be tested by observing whether the oil liquid immersing the part to be tested fluctuates. The oil adding and discharging on-off control passage is used for controlling the on-off of the outlet end of the oil adding and discharging supply passage under the driving of the air source, if the part to be tested does not need to be tested, the outlet end of the oil adding and discharging supply passage is closed through the oil adding and discharging on-off control passage, oil cannot be supplied to the outlet end of the gas oil switching passage through the oil adding and discharging supply passage at the moment, and the oil flows back to the oil adding and discharging supply passage, so that the oil does not submerge the part to be tested.
For better realization the utility model discloses, furtherly, the high-low pressure switches the route and includes that the high-low pressure switches tee bend quadbit valve, the low accuracy high pressure air-vent valve and the high accuracy low pressure air-vent valve that connect in parallel each other, the end of advancing of low accuracy high pressure air-vent valve and high accuracy low pressure air-vent valve all is connected with the air supply, the end of advancing that the tee bend quadbit valve was all switched with the high-low pressure to the low accuracy high pressure air-vent valve and the high accuracy low pressure air-vent valve is connected, the end of advancing that the tee bend quadbit valve was switched to the high.
In order to better realize the utility model, the gas-oil switching path comprises a gas switching path and an oil switching path which are connected in parallel, the inlet ends of the gas switching path and the oil switching path are both connected with the outlet end of the high-low pressure switching path, and the outlet ends of the gas switching path and the oil switching path are both connected with the tightness test fixture; the gas switching passage is provided with a pressure gauge, and the oil switching passage is provided with an oil storage pressure tank.
For better realization the utility model discloses, furtherly, still be provided with gas on the gas switching passageway and switch the stop valve.
For better realization the utility model discloses, furtherly, still be provided with oil on the oil switching path and switch the stop valve.
In order to better realize the utility model discloses, furtherly, be provided with the air-vent valve on adding the pipeline between the inlet end of oil discharge supply tribit cross valve and the air supply.
In order to better realize the utility model discloses, furtherly, add the oil drainage on-off control route including adding oil drainage on-off control tribit cross valve, add the two-position two-way valve of oil drainage on-off control, the inlet end that adds the three-position cross valve of oil drainage on-off control is connected with the air supply, the outlet end that adds the three-position cross valve of oil drainage on-off control is connected with the inlet end that adds the two-position two-way valve of oil drainage on-off control, add the break-make that the two-position two-way valve of oil drainage on-off control is used for the control to add the outlet.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
(1) the utility model discloses a high-low pressure switching path and gas oil switching path that set up the connection gradually realize high pressure and low pressure switch through high-low pressure switching path, realize ventilating and logical oil switch through gas oil switching path, and then realize the nimble switching of high pressure ventilation detection, high pressure logical oil detection, low pressure ventilation detection, low pressure logical oil detection mode to the leakproofness detection requirement of compatible adaptation different parts, the commonality is strong;
(2) the utility model discloses a set up and add the leakproofness test fixture and the part fuel feeding that the oil discharge supply path corresponds the gas-oil switching path and goes out the end, make fluid get into in the fuel container with submergence leakproofness test fixture and part that awaits measuring, and then through whether produce the bubble or produce the fluctuation in observing fluid, judge the leakproofness of the part that awaits measuring simply and conveniently and directly; simultaneously through setting up the switching that adds the switching control access control of oil drainage and supply the delivery end, and then realize the nimble convenient switching of fuel feeding, stop oil feed, oil return, effectively avoid the extravagant and easy operation of fluid, stability good.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Wherein: 1-a pressure regulating valve; 2-oil adding and discharging supply three-position four-way valve; 3-an oil storage tank; 4, switching on and off the oil feeding and discharging to control the two-position two-way valve; 5-a fuel pipeline; 6-switching on and off the three-position four-way valve by adding and discharging oil; 7-a fuel container; 8-high precision low pressure regulating valve; 9-low precision high pressure regulating valve; 10-tightness test fixture; 12-oil switching stop valve; 13-oil storage pressure tank; 14-gas switching stop valves; 15-high-low pressure switching three-way four-position valve.
Detailed Description
Example 1:
the sealing detection oil path structure comprises an internal pressurization path and an external oil adding and discharging path which are connected with an air source, wherein the internal pressurization path comprises a high-low pressure switching path and a gas-oil switching path, and the outlet end of the high-low pressure switching path is connected with the inlet end of the gas-oil switching path; the external oil adding and discharging passage comprises an oil adding and discharging on-off control passage and an oil adding and discharging supply passage, the oil adding and discharging on-off control passage and the oil adding and discharging supply passage are connected in parallel, the outlet end of the oil adding and discharging supply passage is communicated with the outlet end of the gas oil switching passage, and the oil adding and discharging on-off control passage is used for controlling the on-off of the outlet end of the oil adding and discharging supply passage; the oil adding and discharging supply passage comprises an oil adding and discharging supply three-position four-way valve 2, an oil storage tank 3, a fuel pipeline 5 and a fuel container 7, wherein the inlet end of the oil adding and discharging supply three-position four-way valve 2 is connected with an air source, the outlet end of the oil adding and discharging supply three-position four-way valve 2 is connected with the inlet end of the oil storage tank 3, the outlet end of the oil storage tank 3 is connected with the fuel container 7 through the fuel pipeline 5, and the fuel container is arranged corresponding to the outlet end of the gas-oil switching passage; the oil adding and discharging on-off control passage is used for controlling the on-off of the fuel oil pipeline 5.
The internal pressurizing passage is used for pressurizing high-low pressure gas and high-low pressure oil for the part to be tested, and comprises a high-low pressure switching passage and a gas-oil switching passage. The high-low pressure switching passage comprises a high-pressure switching part and a low-pressure switching part which are connected in parallel and can be automatically switched on and off, the inlet ends of the high-pressure switching part and the low-pressure switching part are both connected with an air source, when a high-pressure tightness test needs to be carried out on a part to be tested, the high-pressure switching part is opened, the low-pressure switching part is closed, and at the moment, air introduced by the air source enters a subsequent gas-oil switching passage for ventilation and oil passing switching after being pressurized by the high-pressure switching part; when the low-pressure tightness test is required to be carried out on the part to be tested, the high-pressure switching part is closed, the low-pressure switching part is opened, and at the moment, gas introduced from the gas source enters a subsequent gas-oil switching passage for ventilation and oil passing switching after being subjected to pressure reduction by the low-pressure switching part.
The gas-oil switching passage comprises a gas switching passage and an oil switching passage which are connected in parallel, the inlet end of the gas switching passage is connected with the outlet end of the high-pressure switching part and the outlet end of the low-pressure switching part, and the inlet end of the oil switching passage is also connected with the outlet end of the high-pressure switching part and the outlet end of the low-pressure switching part; the outlet ends of the gas switching passage and the oil switching passage are connected with a part to be tested. After the high-pressure and low-pressure switching is completed through the high-pressure and low-pressure switching passage, if the part to be tested needs to be subjected to the ventilation and sealing performance test, the gas switching passage is opened, the oil switching passage is closed, and at the moment, the gas switching passage is driven by a gas source to only supply gas to the part to be tested, so that the ventilation and sealing performance test of the part to be tested is realized; if the part to be tested needs to be subjected to oil-through tightness test, the gas switching passage is closed, the oil switching passage is opened, and the oil switching passage is driven by the gas source to supply oil to the part to be tested, so that the oil-through tightness test of the part to be tested is realized.
The external oil adding and discharging passage is used for supplying oil to the part to be detected so as to immerse the part to be detected and controlling the on-off of the supplied oil, and after the part to be detected is pressurized by matching with the internal pressurizing passage, whether bubbles are generated or fluctuation is generated in the oil for immersing the part to be detected so as to judge the tightness of the part to be detected.
The external oil adding and discharging passage comprises an oil adding and discharging on-off control passage and an oil adding and discharging supply passage, the inlet ends of the oil adding and discharging on-off control passage and the oil adding and discharging supply passage are connected in parallel, oil is stored in the oil adding and discharging supply passage, and the oil is conveyed to a part to be detected at the outlet end of the gas-oil switching passage under the drive of an air source so as to immerse the part to be detected; the oil adding and discharging on-off control passage is driven by an air source to control the opening and closing of the outlet end of the oil adding and discharging supply passage, if the tightness test of the part to be tested is required, the outlet end of the oil adding and discharging supply passage is opened through the oil adding and discharging on-off control passage, and at the moment, the oil adding and discharging supply passage supplies oil to immerse the part to be tested; if the tightness test of the part to be tested is not needed, the oil adding and discharging on-off control passage is used for closing the outlet end of the oil adding and discharging supply passage, the oil adding and discharging supply passage cannot supply oil, and the oil liquid does not immerse the part to be tested after flowing back.
The high-pressure ventilation and the low-pressure ventilation are switched through the high-pressure and low-pressure switching passage, so that the flexible switching between the high-pressure tightness test and the low-pressure tightness test of the part to be tested is realized; through the switching of the gas-oil switching passage between ventilation and oil passing, the flexible switching between the ventilation sealing performance test and the oil passing sealing performance test of the part to be tested is realized. Through the cooperation of high-low pressure switching path and gas-oil switching path, the high pressure ventilation test, the low pressure ventilation test, the high pressure oil ventilation test and the low pressure oil ventilation test can be flexibly switched, and the sealing property detection requirements of different parts can be met.
The oil adding and discharging on-off control passage comprises an oil adding and discharging on-off control three-position four-way valve 6 and an oil adding and discharging on-off control two-position two-way valve 4, wherein the inlet end of the oil adding and discharging on-off control three-position four-way valve 6 is connected with an air source, the outlet end of the oil adding and discharging on-off control three-position four-way valve 6 is connected with the inlet end of the oil adding and discharging on-off control two-position two-way valve 4, and the oil adding and discharging on-off control two-position two-way valve 4 is used for controlling the.
The three-position four-way valve 2 for oil adding and discharging supply comprises A2、B2、P2、R2Four interfaces, P2The interface is connected with an air source through a three-way connecting pipe A2The interface is connected with the inlet end of the oil storage tank 3. The three-position four-way valve 6 for controlling the on-off of oil feeding and discharging comprises A3、B3、P3、R3Four interfaces, oil adding and discharging on-off control two-position two-way valve 4 comprises A4、P4Two interfaces, P3The interface is connected with an air source through a three-way connecting pipe A3The interface is connected with the P through a pipeline4Interface connection, A4The interface is connected with the B through a pipeline3And (6) interface connection.
When the valve core of the three-position four-way valve 2 is switched to the left side by adding and discharging oil, P is at the moment2Interface with A2The interfaces are communicated, and the valve core of the three-position four-way valve 6 is controlled by the on-off control of oil adding and oil discharging to the left side, at the moment, P3Interface with A3The interfaces are communicated, so that gas passes through the P of the two-position two-way valve 4 controlled by the on-off of oil filling and discharging4Interface flow direction A4The interface, and then make and add the two-position two-way valve of oil discharge on-off control 4 control fuel oil pipeline 5 and open, the gas of air supply gets into batch oil tank 3 this moment, and then drive the inside fluid of batch oil tank 3 and pass through fuel oil pipeline 5 and get into fuel oil container 7, fuel oil container 7 corresponds leakproofness test fixture 10 and sets up, get into behind the fluid in the fuel oil container 7 with leakproofness test fixture 10 and the part submergence that awaits measuring, and then whether produce the bubble in through observing the fluid or whether produce the leakproofness of undulant part with convenient judgement awaiting measuring.
When the valve core of the three-position four-way valve 2 is switched to the middle position by the oil adding and discharging supply, and the valve core of the three-position four-way valve 6 is switched to the right side by the oil adding and discharging on-off control3Interface with B3The interfaces are communicated, and gas passes through A4Interface flow direction P4And the interface further enables the oil adding and discharging on-off control two-position two-way valve 4 to control the fuel oil pipeline 5 to be closed, and the oil liquid is stopped being supplied to the fuel oil container 7.
When the valve core of the three-position four-way valve 2 is switched to the right side by the oil adding and discharging supply and the valve core of the three-position four-way valve 6 is switched to the left side by the oil adding and discharging on-off control, and at the moment, P2Interface with B2Interface connection, gas passing through B2The joint is discharged without entering the oil reservoir 3, while P3Interface with A3The ports are communicated, and the gas passes through P4Interface flow direction A4And the interface enables the oil adding and discharging on-off control two-position two-way valve 4 to control the opening of the fuel oil pipeline 5, so that the oil liquid in the fuel oil container 7 flows back to the oil storage tank 3 through the fuel oil pipeline 5.
Meanwhile, the oil is supplied to the part to be tested by matching the oil adding and discharging supply passage with the internal pressurizing passage so as to immerse the part to be tested, so that the tightness of the part to be tested can be visually and conveniently judged by observing whether bubbles are generated in oil or whether the oil fluctuates, the testing efficiency is high, and the operation is simple and convenient; simultaneously through adding the switching of oil drain on-off control access control with the switching of oil drain supply passage outlet end, and then realize that fluid supplies with the switching of fluid backward flow, in time supply fluid when needing the test leakproofness, in time retrieve fluid when not needing the test leakproofness, avoid fluid extravagant.
Example 2:
the present embodiment is further optimized based on embodiment 1, as shown in fig. 1, the high-low pressure switching path includes a high-low pressure switching three-way four-position valve 15, a low-precision high-pressure regulating valve 9 and a high-precision low-pressure regulating valve 8 which are connected in parallel, the inlet ends of the low-precision high-pressure regulating valve 9 and the high-precision low-pressure regulating valve 8 are both connected to an air source, the outlet ends of the low-precision high-pressure regulating valve 9 and the high-precision low-pressure regulating valve 8 are both connected to the inlet end of the high-low pressure switching three-position valve 15, and the outlet end of the high-low pressure switching three-position valve 15 is connected to the inlet.
The high-low pressure switching three-way four-position valve 15 comprises A1、B1、P1、R1The inlet ends of the low-precision high-pressure regulating valve 9 and the high-precision low-pressure regulating valve 8 are connected with an air source through three-way connecting pipes, and the outlet ends of the low-precision high-pressure regulating valve 9 and the high-precision low-pressure regulating valve 8 are also connected with the P of a three-way four-position valve 15 through three-way and high-low pressure switching1Interface connection, A1The interface is connected with a gas-oil switching passage in the gas-oil switching passage, B1The interface is connected with an oil switching passage in the gas-oil switching passage. The low-precision high-pressure regulating valve 9 is openedWhen the high-precision low-pressure regulating valve 8 is closed, the air source is pressurized by the low-precision high-pressure regulating valve 9 to supply air at high pressure; when the low-precision high-pressure regulating valve 9 is closed and the high-precision low-pressure regulating valve 8 is opened, the air source is depressurized through the high-precision low-pressure regulating valve 8 to perform low-pressure air supply.
Meanwhile, when the valve core of the high-low pressure switching three-way four-position valve 15 is switched to the left side, P is at the moment1Interface with A1The interface is connected, namely the air is supplied and pressurized to the part to be measured through the air switching passage; when the valve core of the high-low pressure switching three-way four-position valve 15 is switched to the right side, P is at the moment1Interface with B1The interface is connected, namely oil is supplied and pressurized to the part to be measured through the oil switching passage.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
the present embodiment is further optimized based on the above embodiment 1 or 2, as shown in fig. 1, the gas-oil switching path includes a tightness testing jig 10, and a gas switching path and an oil switching path connected in parallel, the inlet ends of the gas switching path and the oil switching path are both connected to the outlet ends of the high-pressure and low-pressure switching paths, and the outlet ends of the gas switching path and the oil switching path are both connected to the tightness testing jig 10; the pipeline of the gas switching passage is provided with a pressure gauge 11, and the pipeline of the oil switching passage is provided with an oil storage pressure tank 13.
The tightness test fixture 10 is connected with the part to be tested in an airtight mode, gas is introduced into the part to be tested through the tightness test fixture 10 through the gas switching passage, and oil is introduced into the part to be tested through the tightness test fixture 10 through the oil switching passage.
The inlet end of the pipeline of the gas switching passage and the A of the high-low pressure switching three-way four-position valve 151The outlet end of the pipeline of the gas switching passage is connected with the inlet end of the tightness testing clamp 10 to realize gas supply and pressurization of the part to be tested, and a pressure gauge 11 is arranged on the pipeline of the gas switching passage and used for monitoring the pressure during ventilation; the inlet end of the pipeline of the oil switching passage and the B of the high-low pressure switching three-way four-position valve 151Interface connection, oil switching path pipeline outlet end and sealing testThe inlet end of the clamp 10 is connected, an oil storage pressure tank 13 is arranged on a pipeline of the oil switching passage, the oil storage pressure tank 13 is used for storing oil, and after gas of a gas source enters the oil storage pressure tank 13, the oil in the oil storage pressure tank 13 is driven to be conveyed to the tightness test clamp 10, so that oil supply and pressurization of the part to be tested are realized.
The rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.
Example 4:
this embodiment is further optimized on the basis of any of the embodiments 1 to 3, and as shown in fig. 1, an air switching stop valve 14 is further disposed on the air switching passage; an oil switching stop valve 12 is also arranged on the oil switching passage.
When the valve core of the high-low pressure switching three-way four-position valve 15 is switched to the left, namely P1Interface with A1When the interface is connected, the gas switching stop valve 14 on the pipeline of the gas switching passage is opened, the oil switching stop valve 12 on the pipeline of the oil switching passage is closed, and the gas source supplies gas to the tightness test fixture 10 and the part to be tested through the pipeline of the gas switching passage; when the valve core of the high-low pressure switching three-way four-position valve 15 is switched to the right, namely P1Interface with B1When the interface is connected, the gas switching stop valve 14 on the pipeline of the gas switching passage is closed, the oil switching stop valve 12 on the pipeline of the oil switching passage is opened, and the air source enters the oil storage pressure tank 13 through the pipeline of the oil switching passage, so that oil in the oil storage pressure tank 13 is supplied to the tightness test fixture 10 and the part to be tested.
Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.
Example 5:
this embodiment is further optimized based on any of the embodiments 1 to 4, and as shown in fig. 1, a pressure regulating valve 1 is disposed on a pipeline between an inlet end of the three-position four-way valve 2 for supplying and discharging oil and an air source.
Through setting up air-vent valve 1, can adjust the air supply in real time and supply with the pressure that the inside production of tribit cross valve 2 gets into the batch oil tank 3 through adding the oil release, and then avoid 3 internal pressure of batch oil tank too high to lead to batch oil tank 3 to damage or 3 internal pressure of batch oil tank to lead to too low unable normal to 7 fuel oil containers fuel feeding.
Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (7)
1. A sealing detection oil way structure is characterized by comprising an internal pressurization channel and an external oil adding and discharging channel which are connected with an air source, wherein the internal pressurization channel comprises a high-low pressure switching channel and a gas-oil switching channel, and the outlet end of the high-low pressure switching channel is connected with the inlet end of the gas-oil switching channel; the external oil adding and discharging passage comprises an oil adding and discharging on-off control passage and an oil adding and discharging supply passage, the oil adding and discharging on-off control passage and the oil adding and discharging supply passage are connected in parallel, the outlet end of the oil adding and discharging supply passage is communicated with the outlet end of the gas oil switching passage, and the oil adding and discharging on-off control passage is used for controlling the on-off of the outlet end of the oil adding and discharging supply passage; the oil adding and discharging supply passage comprises an oil adding and discharging supply three-position four-way valve (2), an oil storage tank (3), a fuel pipeline (5) and a fuel container (7), wherein the inlet end of the oil adding and discharging supply three-position four-way valve (2) is connected with an air source, the outlet end of the oil adding and discharging supply three-position four-way valve (2) is connected with the inlet end of the oil storage tank (3), the outlet end of the oil storage tank (3) is connected with the fuel container (7) through the fuel pipeline (5), and the fuel container is arranged corresponding to the outlet end of the gas-oil switching passage; the oil feeding and discharging on-off control passage is used for controlling the on-off of the fuel oil pipeline (5).
2. The structure of the oil path for the sealing detection of claim 1, wherein the high-low pressure switching path comprises a high-low pressure switching three-way four-position valve (15), a low-precision high-pressure regulating valve (9) and a high-precision low-pressure regulating valve (8) which are connected in parallel, the inlet ends of the low-precision high-pressure regulating valve (9) and the high-precision low-pressure regulating valve (8) are both connected with an air source, the outlet ends of the low-precision high-pressure regulating valve (9) and the high-precision low-pressure regulating valve (8) are both connected with the inlet end of the high-low pressure switching three-way four-position valve (15), and the outlet end of the high-low pressure switching three-position valve (15) is connected with.
3. The structure of the sealing detection oil path according to claim 2, wherein the gas-oil switching path comprises a gas switching path and an oil switching path which are connected in parallel, the inlet ends of the gas switching path and the oil switching path are connected with the outlet ends of the high-pressure and low-pressure switching paths, and the outlet ends of the gas switching path and the oil switching path are connected with a sealing test fixture (10); the gas switching passage is provided with a pressure gauge (11), and the oil switching passage is provided with an oil storage pressure tank (13).
4. The seal detection oil path structure according to claim 3, wherein an air switching stop valve (14) is further provided on the air switching path.
5. A seal detection oil passage structure according to claim 3, wherein an oil switching shutoff valve (12) is further provided on the oil switching passage.
6. The structure of any one of claims 1 to 4, wherein the oil feeding and discharging on-off control path comprises an oil feeding and discharging on-off control three-position four-way valve (6) and an oil feeding and discharging on-off control two-position two-way valve (4), an inlet end of the oil feeding and discharging on-off control three-position four-way valve (6) is connected with an air source, an outlet end of the oil feeding and discharging on-off control three-position four-way valve (6) is connected with an inlet end of the oil feeding and discharging on-off control two-position two-way valve (4), and the oil feeding and discharging on-off control two-position two-way valve (4) is used for controlling the on-off of an outlet end of the oil.
7. The structure of the oil passage for sealing detection as claimed in claim 1, wherein a pressure regulating valve (1) is arranged on a pipeline between the inlet end of the three-position four-way valve (2) for supplying and discharging oil and an air source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022628622.2U CN213658179U (en) | 2020-11-13 | 2020-11-13 | Sealed oil circuit structure that detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022628622.2U CN213658179U (en) | 2020-11-13 | 2020-11-13 | Sealed oil circuit structure that detects |
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| CN213658179U true CN213658179U (en) | 2021-07-09 |
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| CN202022628622.2U Active CN213658179U (en) | 2020-11-13 | 2020-11-13 | Sealed oil circuit structure that detects |
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| CN (1) | CN213658179U (en) |
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2020
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