CN111965036A - Ultrahigh pressure test equipment and use method thereof - Google Patents
Ultrahigh pressure test equipment and use method thereof Download PDFInfo
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- CN111965036A CN111965036A CN202010693118.2A CN202010693118A CN111965036A CN 111965036 A CN111965036 A CN 111965036A CN 202010693118 A CN202010693118 A CN 202010693118A CN 111965036 A CN111965036 A CN 111965036A
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- 238000012360 testing method Methods 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 62
- 239000003921 oil Substances 0.000 claims description 16
- 239000010720 hydraulic oil Substances 0.000 claims description 7
- 230000000717 retained effect Effects 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims 1
- 230000006872 improvement Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000010339 dilation Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to ultrahigh pressure test equipment and a using method thereof, wherein the ultrahigh pressure test equipment comprises a bottom plate, a first rack, a second rack and a third rack which are sequentially distributed on the bottom plate along the same axis, and an explosion-proof test bed, a test connecting pipeline and a manual pump which are sequentially and correspondingly arranged on the three racks; the explosion-proof test bed is provided with a positioning groove which is matched with the shape of the tested piece and used for positioning the tested piece, and the positioning groove is provided with an opening towards the direction of the second bench so that the test connecting pipeline is connected with the tested piece; and two ends of the test connecting pipeline are respectively connected with the tested piece and the manual pump. Compared with the prior art, the invention ensures the smooth test by the special test equipment consisting of the explosion-proof test bed, the test connecting pipeline, the manual pump, the positioning groove, the explosion-proof pressing plate and the explosion-proof box, so that the test becomes safe and simple.
Description
Technical Field
The invention relates to the technical field of ultrahigh pressure tests, in particular to ultrahigh pressure test equipment and a using method thereof.
Background
The inside of a shell of an ejection mechanism of a certain type of airplane is seriously corroded after long-term use, a 180Mpa strength test needs to be carried out after the shell is repaired, no special test equipment and test method exist at present, the existing test equipment has high cost and is troublesome to operate, and importantly, the obtained test result is not accurate enough, so that multiple tests need to be carried out, the test efficiency is greatly reduced, and the labor intensity is increased.
Disclosure of Invention
In order to solve the technical problem, the invention provides ultrahigh pressure test equipment and a using method thereof.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
an ultrahigh pressure test device comprises a bottom plate, a first rack, a second rack and a third rack which are sequentially distributed on the bottom plate along the same axis, an explosion-proof test bed, a test connecting pipeline and a manual pump which are sequentially and correspondingly arranged on the three racks;
the explosion-proof test bed is provided with a positioning groove which is matched with the shape of the tested piece and used for positioning the tested piece, and the positioning groove is provided with an opening towards the direction of the second bench so that the test connecting pipeline is connected with the tested piece;
and two ends of the test connecting pipeline are respectively connected with the tested piece and the manual pump.
Furthermore, an explosion-proof pressure plate is arranged on the explosion-proof test bed, and an explosion-proof box which completely covers the explosion-proof test bed and the explosion-proof pressure plate is arranged on the first rack.
Furthermore, one side of the positioning groove is provided with an auxiliary thread abutting rod which is used for further sealing of the tested piece and is positioned on the explosion-proof test bed.
Furthermore, the tested piece is a T-shaped structure and is provided with a sealing shell with a sealing cavity, three vertical holes which are communicated with the sealing cavity and are distributed in a triangular shape and two horizontal holes which are horizontally distributed correspondingly are arranged on the tested piece, the three vertical holes and the two horizontal holes are sealed through sealing plugs, and the sealing plug in one horizontal hole is matched with the auxiliary thread abutting rod.
Furthermore, a pressure gauge is arranged at the joint of the manual pump and the test connecting pipeline.
A use method applied to ultrahigh pressure test equipment comprises the following specific steps:
placing a tested piece which is not completely sealed in a positioning groove on an explosion-proof test bed, and respectively connecting two ends of a test connecting pipeline with the tested piece and a manual pump;
secondly, the manual pump is checked before the test, and air in the test connecting pipeline and the tested piece is exhausted through the manual pump;
completely sealing the tested piece, mounting an explosion-proof pressure plate on an explosion-proof test bed, and covering an explosion-proof box;
manually loading the pressure of the tested piece through a manual pump, staying for 5 minutes when the loading pressure reaches 100Mpa, and observing whether the pressure gauge drops;
if the pressure drops, the pressure of the manual pump is removed, the explosion-proof box is opened, the pressure drop point is found out, if the pressure does not drop, the pressure is continuously loaded to 180Mpa, the pressure is retained for 5 minutes, and whether hydraulic oil leaks from the tested piece on the explosion-proof test bed or not is observed;
and (VI) if the leakage point exists, unloading, finding out the leakage point of the tested piece, if the leakage point does not exist, unloading the tested piece, cleaning the site and completing the test.
Further, in the step (I), the vertical hole at the highest point position in the three vertical holes on the tested piece is not sealed through sealing plug, and the other two vertical holes and the two horizontal holes are sealed through sealing plug.
Further, the manual pump check in the step (two) comprises checking the oil level of the oil tank and detecting whether the oil return valve is closed.
And (3) further, after the explosion-proof pressure plate is arranged on the explosion-proof test bed in the step (III), the gap between the explosion-proof pressure plate and the sealing assembly on the tested piece is smaller than 1 mm.
The invention has the beneficial effects that:
compared with the prior art, the invention ensures the smooth test by the special test equipment consisting of the explosion-proof test bed, the test connecting pipeline, the manual pump, the positioning groove, the explosion-proof pressing plate and the explosion-proof box, so that the test becomes safe and simple.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the explosion-proof test stand according to the present invention;
FIG. 3 is a schematic view of a structure of a test piece according to the present invention;
FIG. 4 is a schematic view of a first seal plug in a test piece according to the present invention;
FIG. 5 is a schematic structural view of a second seal plug in the device under test of the present invention;
FIG. 6 is a schematic structural view of a third seal plug in the device under test of the present invention;
FIG. 7 is a schematic structural view of a fourth seal plug in the test piece according to the present invention.
In the figure: 1. a base plate; 2. a first stage; 3. a second stage; 4. a third stage; 5. an explosion-proof test bed; 6. testing the connecting pipeline; 7. a manual pump; 8. positioning a groove; 9. an explosion-proof pressure plate; 10. an explosion-proof box; 11. an auxiliary screw thread support rod; 12. a pressure gauge; 13. a test piece; 1311. a first thread plug; 1312. an expansion spring; 1313. a first dilation plug; 1314. a second dilation plug; 1315. a steel pad; 1321. a second thread plug; 1321a, a seal groove; 1331. a conical sealing plug; 1341. a first pipe joint; 1342. a second pipe joint; 1343. a first adapter; 1344. a second adapter; 1345. sealing the joint; 1346. a capillary oil hole; 1347. sealing the inner ring; 1348. and sealing the outer ring.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained in the following with the accompanying drawings and the embodiments.
As shown in fig. 1 to 2, an ultrahigh pressure test apparatus comprises a base plate 1, a first rack 2, a second rack 3 and a third rack 4 which are sequentially distributed on the base plate 1 along the same axis, an explosion-proof test stand 5, a test connecting pipeline 6 and a manual pump 7 which are sequentially and correspondingly arranged on the three racks;
the explosion-proof test bed 5 is provided with a positioning groove 8 which is matched with the shape of the tested piece 13 and used for positioning the tested piece 13, and the positioning groove 8 is provided with an opening towards the direction of the second rack 3 so as to connect the test connecting pipeline 6 with the tested piece 13;
and two ends of the test connecting pipeline 6 are respectively connected with the tested piece 13 and the manual pump 7.
As a further improvement of the present invention, the first stage 2, the second stage 3, and the third stage 4 are distributed in this order from left to right.
As a further improvement of the invention, the explosion-proof test bed 5 is provided with a positioning groove 8 matched with the shape of the tested piece 13, the positioning groove 8 is of a T-shaped structure, the positioning groove 8 is transversely distributed at the upper end part of the explosion-proof test bed 5 from left to right, the left end and the right end of the positioning groove 8 are communicated with the outside, the explosion-proof test bed 5 is provided with an explosion-proof pressure plate 9, four threaded holes are distributed around the upper end part of the explosion-proof test bed 5, the explosion-proof pressure plate 9 is fixedly covered on the explosion-proof test bed 5 through the four threaded holes, and in addition, the first rack 2 is provided with an explosion-proof box 10 which completely covers the explosion-proof test bed 5 and the explosion-proof pressure. The explosion-proof pressure plate 9 and the explosion-proof box 10 have the function of preventing the sealing assembly on the tested piece 13 from being exploded to cause harm to the operator when an accident happens in the test.
As a further improvement of the invention, an auxiliary threaded abutting rod 11 for further sealing the tested piece 13 is arranged on the left side of the positioning groove 8 and on the explosion-proof test bed 5.
The auxiliary screw-thread abutting rod 11 is used for abutting against a sealing component on the tested piece 13 so as to further improve the sealing performance of the tested piece 13.
As shown in fig. 3 to 7, as a further improvement of the present invention, the tested piece 13 is a sealed housing with a T-shaped structure and a sealed cavity, three vertical holes which are communicated with the sealed cavity and distributed in a triangular shape and two horizontal holes which are distributed horizontally and correspondingly are arranged on the tested piece 13, the three vertical holes and the two horizontal holes are sealed by sealing plugs, and the sealing plug in one horizontal hole is matched with the auxiliary screw abutting rod 11.
Two vertical holes of the three vertical holes are symmetrically distributed at two T-shaped end parts extending outwards of the tested piece 13, corresponding sealing plugs in the two vertical holes are composed of a first threaded plug 1311 with a sealing ring, an expansion spring 1312, a first expansion plug 1313, a second expansion plug 1314 and a steel gasket 1315 which are connected with each other, and the sealing plugs are first sealing plugs; the first threaded plug 1311 and the steel gasket 1315 are correspondingly sealed and plugged at the upper end and the lower end of the two vertical holes.
The wedge-shaped surface of the first expansion plug 1313 is in fit connection with the wedge-shaped surface of the second expansion plug 1314, the first expansion plug 1313 is a wedge-shaped convex surface, the second expansion plug 1314 is a wedge-shaped concave surface, and a large number of pressure tests prove that when the wedge-shaped surface fit angle between the first expansion plug 1313 and the second expansion plug 1314 is 8 degrees, the fit effect between the first expansion plug 1313 and the second expansion plug 1314 is better, and the sealing effect is better. The first inflatable plug 1313 is made of 45# steel, and the second inflatable plug 1314 is made of nylon.
After the first plug is inserted into the vertical bores, the first threaded plug 1311 seals the upper ends of the vertical bores and simultaneously applies a downward force to the expansion spring 1312, and the expansion spring 1312 applies a pressure to the first expansion plug 1313 and the second expansion plug 1314, so that the first expansion plug 1313 and the second expansion plug 1314 expand to seal the lower ends of the vertical bores.
The vertical holes at the positions of the rest highest points in the three vertical holes are distributed at the upper end part of the tested piece 13 and close to the transverse and longitudinal intersection, the sealing plug of the vertical hole is a second threaded plug 1321 with a sealing groove 1321a, and the sealing plug of the vertical hole is a second sealing plug.
The two horizontal holes are correspondingly distributed at the front side and the rear side of the tested piece 13, wherein the sealing plug in the horizontal hole at the rear side of the tested piece 13 is a conical sealing plug 1331, and the sealing plug is a third sealing plug; the conical sealing plug 1331 is made of nylon, the conical sealing plug 1331 is matched with the auxiliary thread retaining rod 11, and during testing, the conical sealing plug 1331 is tightly sealed and retained in the horizontal hole at the rear side of the tested piece 13 under the action of the auxiliary thread retaining rod 11.
The sealing plug positioned in the horizontal hole at the front side of the tested piece 13 consists of a first pipe joint 1341, a second pipe joint 1342, a first adapter 1343, a second adapter 1344 and a sealing joint 1345 which are connected in sequence, and the sealing plug is a fourth sealing plug; the horizontal hole at the front side of the tested piece 13 is a test hole, and is in sealing connection with the test connecting pipeline 6 in the invention through the corresponding sealing plug during the test.
Further, the first pipe joint 1341, the second pipe joint 1342, the first adapter 1343, the second adapter 1344, and the sealing joint 1345 are all connected by screw threads. The inside axis of a adapter 1343, No. two adapters 1344, sealed joint 1345 all is equipped with the same capillary oilhole 1346 that is used for the test equipment to annotate hydraulic oil to being tested 13 with experimental in diameter. The capillary oil hole 1346 is used for protecting the test precision of the test equipment and preventing the impact of liquid vibration on the test equipment when ultrahigh pressure is lost instantaneously in the test process.
And a combined sealing ring consisting of a sealing inner ring 1347 and a sealing outer ring 1348 is arranged at the end part of the sealing joint 1345 connected with the horizontal hole positioned at the front side of the tested piece 13.
As a further improvement of the invention, a pressure gauge 12 is arranged at the joint of the manual pump 7 and the test connecting pipeline 6, an oil return valve is arranged on the side edge of the manual pump 7, and an oil tank cover is arranged at the upper end part of the rear side.
As a further improvement of the invention, the test connecting pipelines 6 on the second stand 3 are horizontally distributed from left to right, and the two ends of the test connecting pipelines 6 are connected with the tested piece 13 and the manual pump 7 in a threaded sealing way.
A use method applied to ultrahigh pressure test equipment comprises the following specific steps:
firstly, placing the incompletely sealed tested piece 13 in the positioning groove 8 on the explosion-proof test bed 5, and respectively connecting the two ends of the test connecting pipeline 6 with the tested piece 13 and the manual pump 7.
Specifically, the vertical hole at the highest point position of the three vertical holes on the tested piece 13 is not sealed by the sealing plug, and the other two vertical holes and the two horizontal holes are sealed by the sealing plugs.
Then, the auxiliary screw retaining rod 11 is screwed to tightly seal the tapered sealing plug 1331 in the horizontal hole at the rear side of the tested piece 13.
Then, the left end portion of the test connection pipe 6 is screw-sealed to the seal joint 1345, and the right end portion of the test connection pipe 6 is screw-sealed to the manual pump 7.
And secondly, the manual pump 7 is checked before the test, and air in the test connecting pipeline 6 and the tested piece 13 is removed through the manual pump 7.
Specifically, whether an oil return valve on the manual pump 7 is closed or not is checked, whether the oil level of an oil tank of the manual pump 7 is too low or not is checked, 46# anti-wear hydraulic oil is filled if the oil level is too low, and attention is paid to not filling old oil so as to avoid reducing the service life of the manual pump 7.
Then, the manual pump 7 is pressed to fill hydraulic oil into the tested piece 13 through the test connecting pipeline 6 so as to exhaust air in the test connecting pipeline 6 and the tested piece 13, and when the hydraulic oil leaks out from the unsealed vertical hole on the tested piece 13, the fact that no air exists in the test connecting pipeline 6 and the tested piece 13 is proved.
And (III) completely sealing the tested piece 13, mounting the explosion-proof pressure plate 9 on the explosion-proof test bed 5, and covering the explosion-proof box 10.
Specifically, the vertical hole that is not sealed on will being tested piece 13 seals up and blocks up, then, through four screw holes on safe adjusting bolt and the explosion-proof test platform 5, install explosion-proof clamp plate 9 on explosion-proof test platform 5, when installing explosion-proof clamp plate 9, the clearance is less than 1mm between the safe adjusting bolt that will guarantee the installation and the seal assembly on being tested piece 13 to when further preventing that the seal assembly on being tested piece 13 is unexpected to explode, there is not the space that can run out.
And (IV) manually loading the pressure of the tested piece 13 through the manual pump 7, staying for 5 minutes when the loading pressure reaches 100Mpa, and observing whether the pressure gauge 12 loses pressure or not.
And (V) if the pressure is dropped, the pressure of the manual pump 7 is removed, the explosion-proof box 10 is opened, the pressure drop point is found out, if the pressure is not dropped, the pressure is continuously loaded to 180Mpa, the pressure is retained for 5 minutes, and whether the hydraulic oil leaks from the tested piece 13 on the explosion-proof test bed 5 is observed.
Specifically, the retention time was recorded by a stopwatch.
And (VI) if the leakage point exists, unloading, finding out the leakage point of the tested piece 13, otherwise, unloading the tested piece 13, cleaning the site and completing the test.
Specifically, when a leakage point is found, the oil return valve is opened until the display value of the pressure gauge returns to zero, the sealing assembly at the leakage point is replaced, and then the test is repeated.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. An ultrahigh pressure test equipment which is characterized in that: the device comprises a bottom plate (1), a first rack (2), a second rack (3) and a third rack (4) which are sequentially distributed on the bottom plate (1) along the same axis, an explosion-proof test bed (5), a test connecting pipeline (6) and a manual pump (7) which are sequentially and correspondingly arranged on the three racks;
the anti-explosion test bed (5) is provided with a positioning groove (8) which is matched with the shape of the tested piece (13) and used for positioning the tested piece (13), and the positioning groove (8) is provided with an opening towards the direction of the second rack (3) so that the test connecting pipeline (6) is connected with the tested piece (13);
and two ends of the test connecting pipeline (6) are respectively connected with a tested piece (13) and the manual pump (7).
2. An ultra-high pressure test apparatus according to claim 1, wherein: the explosion-proof test bed is characterized in that an explosion-proof pressing plate (9) is arranged on the explosion-proof test bed (5), and an explosion-proof box (10) which completely covers the explosion-proof test bed (5) and the explosion-proof pressing plate (9) is arranged on the first rack (2).
3. An ultra-high pressure test apparatus according to claim 1, wherein: and an auxiliary thread abutting rod (11) used for further sealing the tested piece (13) is arranged on one side of the positioning groove (8) and on the explosion-proof test bed (5).
4. An ultra-high pressure test apparatus according to claim 3, wherein: the device is characterized in that the tested piece (13) is a T-shaped structure and is provided with a sealing shell with a sealing cavity, three vertical holes which are communicated with the sealing cavity and are distributed in a triangular shape and two horizontal holes which are distributed horizontally and correspondingly are arranged on the tested piece (13), the three vertical holes and the two horizontal holes are sealed through sealing plugs, and the sealing plug in one horizontal hole is matched with the auxiliary thread abutting rod (11).
5. An ultra-high pressure test apparatus according to claim 1, wherein: and a pressure gauge (12) is arranged at the joint of the manual pump (7) and the test connecting pipeline (6).
6. Use method applied to an ultra-high pressure test apparatus according to any one of claims 1 to 5, characterized in that: the method comprises the following specific steps:
placing a tested piece (13) which is not completely sealed in a positioning groove (8) on an explosion-proof test bed (5), and respectively connecting two ends of a test connecting pipeline (6) with the tested piece (13) and a manual pump (7);
secondly, the manual pump (7) is checked before the test, and air in the test connecting pipeline (6) and the tested piece (13) is removed through the manual pump (7);
thirdly, the tested piece (13) is completely sealed, the explosion-proof pressure plate (9) is arranged on the explosion-proof test bed (5), and the explosion-proof box (10) is covered;
fourthly, manually loading the pressure of the tested piece (13) through a manual pump (7), staying for 5 minutes when the loading pressure reaches 100Mpa, and observing whether the pressure gauge (12) drops;
if the pressure drops, the pressure of the manual pump (7) is removed, the explosion-proof box (10) is opened, the pressure drop point is found out, if the pressure does not drop, the pressure is continuously loaded to 180Mpa, the pressure is retained for 5 minutes, and whether hydraulic oil leaks from a tested piece (13) on the explosion-proof test bed (5) is observed;
and (VI) if the leakage point exists, unloading, finding out the leakage point of the tested piece (13), if the leakage point does not exist, unloading the tested piece (13), cleaning the site, and completing the test.
7. The use method applied to the ultrahigh pressure test equipment according to claim 6, is characterized in that: in the step (I), the vertical hole at the highest point position in the three vertical holes on the tested piece (13) is not sealed through sealing plug, and the other two vertical holes and the two horizontal holes are sealed through sealing plug.
8. The use method applied to the ultrahigh pressure test equipment according to claim 6, is characterized in that: and (2) in the step (II), the manual pump (7) is checked to check the oil level of the oil tank and detect whether the oil return valve is closed or not.
9. The use method applied to the ultrahigh pressure test equipment according to claim 6, is characterized in that: and (3) after the explosion-proof pressure plate (9) is arranged on the explosion-proof test bed (5) in the step (III), the gap between the explosion-proof pressure plate (9) and the sealing assembly on the tested piece (13) is smaller than 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010693118.2A CN111965036A (en) | 2020-07-17 | 2020-07-17 | Ultrahigh pressure test equipment and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010693118.2A CN111965036A (en) | 2020-07-17 | 2020-07-17 | Ultrahigh pressure test equipment and use method thereof |
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| CN111965036A true CN111965036A (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010693118.2A Pending CN111965036A (en) | 2020-07-17 | 2020-07-17 | Ultrahigh pressure test equipment and use method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004325080A (en) * | 2003-04-21 | 2004-11-18 | Daito Seisakusho:Kk | Hose-testing apparatus |
| CN201819774U (en) * | 2010-09-20 | 2011-05-04 | 湖南吉利汽车部件有限公司 | Fuel hose sealing performance testing device |
| CN102539241A (en) * | 2011-11-18 | 2012-07-04 | 国营第六一六厂 | Strength and sealing performance test method for diesel engine high pressure oil pipe |
| CN105181475A (en) * | 2015-10-28 | 2015-12-23 | 四川杰特机器有限公司 | Impulse test system supercharged through servo electric cylinder |
| CN108593212A (en) * | 2018-05-04 | 2018-09-28 | 西迪技术股份有限公司 | The bearing detection device and pressure-bearing detection method of engineering machinery cooling device |
| CN208765951U (en) * | 2018-09-29 | 2019-04-19 | 上海龙甑液压设备制造有限公司 | A kind of ultrahigh-pressure hydraulic valve testing stand |
-
2020
- 2020-07-17 CN CN202010693118.2A patent/CN111965036A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004325080A (en) * | 2003-04-21 | 2004-11-18 | Daito Seisakusho:Kk | Hose-testing apparatus |
| CN201819774U (en) * | 2010-09-20 | 2011-05-04 | 湖南吉利汽车部件有限公司 | Fuel hose sealing performance testing device |
| CN102539241A (en) * | 2011-11-18 | 2012-07-04 | 国营第六一六厂 | Strength and sealing performance test method for diesel engine high pressure oil pipe |
| CN105181475A (en) * | 2015-10-28 | 2015-12-23 | 四川杰特机器有限公司 | Impulse test system supercharged through servo electric cylinder |
| CN108593212A (en) * | 2018-05-04 | 2018-09-28 | 西迪技术股份有限公司 | The bearing detection device and pressure-bearing detection method of engineering machinery cooling device |
| CN208765951U (en) * | 2018-09-29 | 2019-04-19 | 上海龙甑液压设备制造有限公司 | A kind of ultrahigh-pressure hydraulic valve testing stand |
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Application publication date: 20201120 |