CN112964425A - Hydraulic rod sealing performance testing device for railway construction - Google Patents
Hydraulic rod sealing performance testing device for railway construction Download PDFInfo
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- CN112964425A CN112964425A CN202110237082.1A CN202110237082A CN112964425A CN 112964425 A CN112964425 A CN 112964425A CN 202110237082 A CN202110237082 A CN 202110237082A CN 112964425 A CN112964425 A CN 112964425A
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- fixedly connected
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- hydraulic rod
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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
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Abstract
The invention discloses a hydraulic rod tightness testing device for railway construction, and relates to the technical field of tightness testing; the hydraulic rod sealing performance detection problem is solved; the hydraulic rod connecting device comprises a front cover plate and a rear cover plate, wherein a first baffle and a second baffle are fixedly connected to the inner wall of the rear cover plate, a placing plate is connected to the inner wall of the rear cover plate in a sliding mode, a hydraulic rod body is placed at the top of the placing plate, a first check ring and a second check ring are connected to the outer wall of the hydraulic rod body in a sliding mode, a connecting sleeve is fixedly connected to one end of the hydraulic rod body, and a sliding rod is fixedly connected to one end. According to the invention, the hydraulic rod body is fixed by the front cover plate and the rear cover plate through the arrangement of the front cover plate and the rear cover plate, two air pipe joints on the hydraulic rod body are respectively communicated with the first adjusting air pipe and the second adjusting air pipe, and the first adjusting air pipe and the second adjusting air pipe inject air into the hydraulic rod body, so that zero scales on the sliding rod correspond to the side wall of the rear cover plate, and preparation is made for subsequent detection.
Description
Technical Field
The invention relates to the technical field of tightness testing, in particular to a hydraulic rod tightness testing device for railway construction.
Background
Traditional hydraulic stem seal test is through external power pump injection oil or gas in to the hydraulic stem, scribble one deck water at the hydraulic stem skin, whether leak gas through observing the production that has no bubble and judge the hydraulic stem, when adopting this mode to carry out the hydraulic stem leakproofness test, it can rust with higher speed with water scribble the hydraulic stem, cause the problem that life shortens, and need erase at the test end, comparatively troublesome, see the mode of bubble through the flesh eye and carry out the leakproofness judgement and need rotate the hydraulic stem many times, see the test from different angles, comparatively troublesome and the condition of seeing the eye of walking easily appears, make the test inaccurate.
Through the retrieval, chinese patent application No. 201220509071.0 discloses a hydraulic stem seal testing arrangement, including the working switch, the test panel, hydraulic pressure connects, detect the table, the test motor, and a support, hydraulic tank, the force pump is constituteed, the upper portion of its characterized in that support sets up the test panel, upper end one side of test panel sets up the working switch, the inside both sides of test panel set up the detection table, the middle part of test panel sets up hydraulic pressure and connects, the lower part of support sets up hydraulic tank, the inside of hydraulic tank sets up the force pump, the upper end of force pump sets up the test motor. The above patents suffer from the following disadvantages: the device can only detect the gas tightness of hydraulic stem, but can not detect the position of revealing of hydraulic stem, needs other check out test set cooperations, and is comparatively troublesome.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a hydraulic rod tightness testing device for railway construction.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydraulic rod sealing performance testing device for railway construction comprises a front cover plate and a rear cover plate, wherein a first partition plate and a second partition plate are fixedly connected to the inner wall of the rear cover plate, a placing plate is slidably connected to the inner wall of the rear cover plate, a hydraulic rod body is placed on the top of the placing plate, a first check ring and a second check ring are slidably connected to the outer wall of the hydraulic rod body, a connecting sleeve is fixedly connected to one end of the hydraulic rod body, a sliding rod is fixedly connected to one end of the connecting sleeve, a limiting ring is fixedly connected to one end of the sliding rod, scale marks are carved on the outer wall of the sliding rod, a guide sleeve rod is slidably connected to the outer wall of the sliding rod and fixedly connected to the inner wall of the rear cover plate, two air pipe joints are fixedly connected to the outer wall of the hydraulic rod body, one end of one air pipe joint is fixedly connected to an, one end of the first adjusting air pipe and one end of the second adjusting air pipe are fixedly connected with a commutator.
Preferably: the commutator is fixedly connected to one side of the rear cover plate, one side of the rear cover plate is fixedly connected with a third adjusting air pipe and a fourth adjusting air pipe, and one ends of the third adjusting air pipe and the fourth adjusting air pipe are fixedly connected to one end of the commutator.
Further: the one end of commutator is provided with the button of taking a breath, and the quantity of the button of taking a breath is four, and the one end fixedly connected with exhaust tube of commutator, the two-way aspiration pump of one end fixedly connected with of exhaust tube, the one end fixedly connected with breather pipe of two-way aspiration pump.
As a preferable aspect of the present invention: the two-way air pump is fixedly connected to the inner wall of the bottom of the rear cover plate, and one end of the vent pipe is fixedly connected to one end of the rear cover plate.
On the basis of the scheme: the inner wall of back shroud fixedly connected with location hole post, the quantity of location hole post is four, and the thread groove has been seted up to the inner wall of location hole post.
Preferably: the inner wall fixedly connected with reference column of front shroud, the inner wall threaded connection of reference column has the screw thread post, the one end fixedly connected with nut of screw thread post.
Further: and one ends of the front cover plate and the rear cover plate and one ends of the first partition plate and the second partition plate are fixedly connected with elastic sealing gaskets.
On the basis of the scheme: the inner wall fixedly connected with hot plate of front shroud, one side fixedly connected with display screen of front shroud, display screen and hot plate electric connection.
As a preferable aspect of the present invention: the joint of the air pipe joint and the second adjusting air pipe is provided with a flange, the outer wall of one end of the second adjusting air pipe is fixedly connected with a pipe joint, one end of the pipe joint is sleeved with a sealing ring, one end of the sealing ring is attached to the air pipe joint, and one end of the flange is in threaded connection with a tightening bolt.
The invention has the beneficial effects that:
1. the utility model provides a hydraulic stem leakproofness testing arrangement for railway construction, through setting up front shroud and back shroud, it is fixed with front shroud and back shroud with the hydraulic stem body, two air pipe connectors on the hydraulic stem body communicate with regulation trachea one and regulation trachea two phase respectively, baffle one separates into two parts with the hydraulic stem body with baffle two, start two-way aspiration pump, adjust trachea one and adjust the trachea and to this internal gas injection of hydraulic stem, adjust the flexible length of piston rod on the hydraulic stem body, piston rod on the hydraulic stem is at flexible in-process, it slides along the uide bushing that corresponds to drive continuous slide bar, make zero scale on the slide bar corresponding with the back shroud lateral wall, prepare for follow-up detection.
2. The utility model provides a hydraulic stem leakproofness testing arrangement for railway construction, adjusts trachea one and adjusts trachea two through the setting, presses the button of taking a breath on the commutator, stops to this internal gas injection of hydraulic stem, and is again to adjusting trachea three and adjusting trachea four simultaneous gas injection, makes to be in high-pressure state around the hydraulic stem body, confirms whether two slide bars slide through observing the scale on the slide bar, if the slide bar slides, then indicates hydraulic stem body gas leakage.
3. The utility model provides a hydraulic stem leakproofness testing arrangement for railway construction, through setting up baffle two, carries out the gas injection to adjusting trachea three alone, if the slide bar slides, then shows the hydraulic stem front end gas leakage that corresponds this slide bar, injects the gas again to adjusting trachea four alone, if the slide bar slides, then shows the hydraulic stem rear end gas leakage that corresponds this slide bar, places the height of board through the regulation, and then changes the position of hydraulic stem body, can short-term test out the position of revealing.
4. The utility model provides a hydraulic stem leakproofness testing arrangement for railway construction, through setting up the reference column, with reference column and locating hole post cooperation, make the accurate butt joint of front shroud and back shroud, screw up the nut, make front shroud and back shroud extrude each other, and make laminating department can not leak gas through the elastic sealing pad, guarantee the leakproofness of whole device, the hot plate heats inside, detect the leakproofness effect of hydraulic stem body under high temperature environment on the one hand, on the other hand further improves the inside gas tightness of device through expend with heat and contract with cold principle.
5. The utility model provides a hydraulic stem leakproofness testing arrangement for railway construction, through setting up the flange, for preventing that the trachea from connecting and adjusting two appearance of trachea not hard up, lead to the kneck gas leakage, influence the testing result, be provided with coupling and sealing washer in the junction of trachea joint and regulation two, improve the leakproofness of junction to consolidate the junction through the flange, further reduce pipeline axial deformation's influence, improve device's stability.
Drawings
Fig. 1 is a schematic overall structure diagram of a hydraulic rod tightness testing device for railway construction according to the present invention;
FIG. 2 is a schematic structural diagram of a rear cover plate of the hydraulic rod tightness testing device for railway construction according to the present invention;
FIG. 3 is a schematic rear view of a rear cover plate of the hydraulic rod tightness testing device for railway construction according to the present invention;
FIG. 4 is a schematic structural diagram of a front cover plate of the hydraulic rod tightness testing device for railway construction according to the present invention;
FIG. 5 is a schematic structural view of a flange of the hydraulic rod tightness testing device for railway construction according to the present invention;
fig. 6 is a cross-sectional view of a gas pipe joint of a hydraulic rod tightness testing device for railway construction according to the present invention.
In the figure: 1-front cover plate, 2-rear cover plate, 3-display screen, 4-screw cap, 5-positioning hole column, 6-baffle plate I, 7-hydraulic rod body, 8-baffle plate II, 9-retainer ring I, 10-placing plate, 11-vent pipe, 12-bidirectional air pump, 13-air pumping pipe, 14-regulating air pipe I, 15-air pipe joint, 16-regulating air pipe II, 17-retainer ring II, 18-connecting sleeve, 19-guiding sleeve rod, 20-limiting ring, 21-sliding rod, 22-commutator, 23-regulating air pipe III, 24-ventilation button, 25-regulating air pipe IV, 26-threaded column, 27-positioning column, 28-elastic sealing gasket, 29-heating plate, 30-flange, 31-pipe joint, 32-sealing ring, 33-tightening bolt.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
A hydraulic rod tightness testing device for railway construction is shown in figures 1-4 and comprises a front cover plate 1 and a rear cover plate 2, wherein a first partition plate 6 and a second partition plate 8 are fixedly connected to the inner wall of the rear cover plate 2, a placing plate 10 is slidably connected to the inner wall of the rear cover plate 2, a hydraulic rod body 7 is placed on the top of the placing plate 10, a first check ring 9 and a second check ring 17 are slidably connected to the outer wall of the hydraulic rod body 7, a connecting sleeve 18 is fixedly connected to one end of the hydraulic rod body 7, a sliding rod 21 is fixedly connected to one end of the connecting sleeve 18, a limiting ring 20 is fixedly connected to one end of the sliding rod 21, scale marks are carved on the outer wall of the sliding rod 21, a guide sleeve rod 19 is slidably connected to the outer wall of the sliding rod 21, the guide sleeve rod 19 is fixedly connected to the inner wall of the rear cover plate 2, an air pipe joint 15 is, one end of one of the air pipe joints 15 is fixedly connected with a first adjusting air pipe 14, one end of the other air pipe joint 15 is fixedly connected with a second adjusting air pipe 16, one ends of the first adjusting air pipe 14 and the second adjusting air pipe 16 are fixedly connected with a commutator 22, the commutator 22 is fixedly connected to one side of the rear cover plate 2, one side of the rear cover plate 2 is fixedly connected with a third adjusting air pipe 23 and a fourth adjusting air pipe 25, one ends of the third adjusting air pipe 23 and the fourth adjusting air pipe 25 are fixedly connected to one end of the commutator 22, one end of the commutator 22 is provided with a ventilation button 24, the number of the ventilation buttons 24 is four, one end of the commutator 22 is fixedly connected with an air extraction pipe 13, one end of the air extraction pipe 13 is fixedly connected with a bidirectional air extraction pump 12, one end of the bidirectional air extraction pump 12 is fixedly connected with a vent pipe 11, the bidirectional air extraction pump 12 is fixedly; through setting the front cover plate 1 and the rear cover plate 2, the hydraulic rod body 7 is fixed by the front cover plate 1 and the rear cover plate 2, two air pipe joints 15 on the hydraulic rod body 7 are respectively communicated with a first adjusting air pipe 14 and a second adjusting air pipe 16, the first partition plate 6 and the second partition plate 8 divide the hydraulic rod body 7 into two parts, the bidirectional air pump 12 is started, the first adjusting air pipe 14 and the second adjusting air pipe 16 inject air into the hydraulic rod body 7, the telescopic length of a piston rod on the hydraulic rod body 7 is adjusted, and the piston rod on the hydraulic rod drives a connected sliding rod to slide along a corresponding guide sleeve in the telescopic process, so that zero scales on the sliding rod correspond to the side wall of the rear cover plate, and preparation is made for subsequent detection; through arranging the first adjusting air pipe 14 and the second adjusting air pipe 16, the air exchange button 24 on the commutator 22 is pressed, air injection into the hydraulic rod body 7 is stopped, then the third adjusting air pipe 23 and the fourth adjusting air pipe 25 are injected simultaneously, so that the periphery of the hydraulic rod body 7 is in a high-pressure state, whether the two sliding rods slide or not is confirmed through observing scales on the sliding rods, and if the sliding rods slide, air leakage of the hydraulic rod body 7 is indicated; through setting up baffle two 8, carry out the gas injection to adjusting trachea three 23 alone, if the slide bar slides, then show the hydraulic stem front end gas leakage that corresponds this slide bar, carry out the gas injection to adjusting trachea four 25 alone again, if the slide bar slides, then show the hydraulic stem rear end gas leakage that corresponds this slide bar, place the height of board 10 through the regulation, and then change the position of hydraulic stem body 7, can short-term test out the position of revealing.
In order to solve the sealing problem of the front cover plate 1 and the rear cover plate 2; as shown in fig. 1, 2 and 4, the inner wall of the rear cover plate 2 is fixedly connected with four positioning hole columns 5, the inner wall of each positioning hole column 5 is provided with a thread groove, the inner wall of the front cover plate 1 is fixedly connected with a positioning column 27, the inner wall of the positioning column 27 is in threaded connection with a thread column 26, one end of each thread column 26 is fixedly connected with a nut 4, one ends of the front cover plate 1 and the rear cover plate 2 and one ends of the first partition plate 6 and the second partition plate 8 are fixedly connected with an elastic sealing gasket 28, the inner wall of the front cover plate 1 is fixedly connected with a heating plate 29, one side of the front cover plate 1 is fixedly connected with a display screen 3, and the display screen 3 is electrically connected; through setting up reference column 27, with reference column 27 and the cooperation of locating hole post 5, make the accurate butt joint of front shroud 1 and back shroud 2, screw up nut 4, make front shroud 1 and back shroud 2 extrude each other, and make laminating department can not leak gas through elastic sealing pad 28, guarantee the leakproofness of whole device, hot plate 29 heats inside, detect the leakproofness effect of fluid pressure pole body 7 under high temperature environment on the one hand, on the other hand further improves the inside gas tightness of device through expend with heat and contract with cold principle.
In order to solve the problem of connection tightness; as shown in fig. 5 and 6, a flange 30 is arranged at the joint of the air pipe joint 15 and the second adjusting air pipe 16, a pipe joint 31 is fixedly connected to the outer wall of one end of the second adjusting air pipe 16, a sealing ring 32 is sleeved at one end of the pipe joint 31, one end of the sealing ring 32 is attached to the air pipe joint 15, and a tightening bolt 33 is connected to one end of the flange 30 in a threaded manner; through setting up flange 30, it is not hard up to appear in order to prevent that the trachea from connecting 15 and adjusting two 16 of trachea, lead to the kneck gas leakage, influence the testing result, be provided with coupling 31 and sealing washer 32 in the junction of trachea joint 15 and the two 16 of regulation trachea, improve the leakproofness of junction to consolidate the junction through flange 30, further reduce pipeline axial deformation's influence, improve device's stability.
In the embodiment, when the hydraulic rod body 7 is fixed by the front cover plate 1 and the rear cover plate 2, two air pipe joints 15 on the hydraulic rod body 7 are respectively communicated with a first adjusting air pipe 14 and a second adjusting air pipe 16, a first partition plate 6 and a second partition plate 8 divide the hydraulic rod body 7 into two parts, the bidirectional air pump 12 is started, the first adjusting air pipe 14 and the second adjusting air pipe 16 inject air into the hydraulic rod body 7, the telescopic length of a piston rod on the hydraulic rod body 7 is adjusted, the piston rod on the hydraulic rod drives a connected sliding rod to slide along a corresponding guide sleeve in the telescopic process, so that a zero scale on the sliding rod corresponds to the side wall of the rear cover plate, the air exchange button 24 on the commutator 22 is pressed to stop injecting air into the hydraulic rod body 7, then the third adjusting air pipe 23 and the fourth adjusting air pipe 25 are injected simultaneously, so that the periphery of the hydraulic rod body 7 is in a high-pressure state, and whether the two sliding rods slide is confirmed by observing the, if the slide bar slides, then show hydraulic stem body 7 gas leakage, carry out the gas injection to adjusting trachea three 23 alone, if the slide bar slides, then show the hydraulic stem front end gas leakage that corresponds this slide bar, again inject gas to adjusting trachea four 25 alone, if the slide bar slides, then show the hydraulic stem rear end gas leakage that corresponds this slide bar, place the height of board 10 through the regulation, and then change the position of hydraulic stem body 7, short-term test detects out the position of revealing, cooperate reference column 27 and locating hole post 5, make front shroud 1 and back shroud 2 accurate butt joint, screw up nut 4, make front shroud 1 and back shroud 2 extrude each other, and make the laminating department can not leak gas through elastic sealing pad 28, guarantee the leakproofness of whole device, heating plate 29 heats the inside, detect the leakproofness effect of hydraulic stem body 7 under high temperature environment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The hydraulic rod tightness testing device for railway construction comprises a front cover plate (1) and a rear cover plate (2) and is characterized in that a first partition plate (6) and a second partition plate (8) are fixedly connected to the inner wall of the rear cover plate (2), a placing plate (10) is slidably connected to the inner wall of the rear cover plate (2), a hydraulic rod body (7) is placed at the top of the placing plate (10), a first check ring (9) and a second check ring (17) are slidably connected to the outer wall of the hydraulic rod body (7), a connecting sleeve (18) is fixedly connected to one end of the hydraulic rod body (7), a sliding rod (21) is fixedly connected to one end of the connecting sleeve (18), a limiting ring (20) is fixedly connected to one end of the sliding rod (21), scale marks are carved on the outer wall of the sliding rod (21), a guide sleeve rod (19) is slidably connected to the outer wall of the sliding rod (21), and the guide sleeve rod (19) is fixedly, the hydraulic rod comprises a hydraulic rod body (7), wherein the outer wall of the hydraulic rod body (7) is fixedly connected with two air pipe connectors (15), one end of one air pipe connector (15) is fixedly connected with a first adjusting air pipe (14), one end of the other air pipe connector (15) is fixedly connected with a second adjusting air pipe (16), and one ends of the first adjusting air pipe (14) and the second adjusting air pipe (16) are fixedly connected with a commutator (22).
2. The hydraulic rod tightness testing device for railway construction according to claim 1, wherein the reverser (22) is fixedly connected to one side of the rear cover plate (2), one side of the rear cover plate (2) is fixedly connected with a third adjusting air pipe (23) and a fourth adjusting air pipe (25), and one ends of the third adjusting air pipe (23) and the fourth adjusting air pipe (25) are fixedly connected to one end of the reverser (22).
3. The hydraulic rod tightness testing device for railway construction according to claim 2, wherein one end of the commutator (22) is provided with air exchange buttons (24), the number of the air exchange buttons (24) is four, one end of the commutator (22) is fixedly connected with an air suction pipe (13), one end of the air suction pipe (13) is fixedly connected with a bidirectional air suction pump (12), and one end of the bidirectional air suction pump (12) is fixedly connected with a vent pipe (11).
4. The hydraulic rod tightness test device for railway construction according to claim 3, wherein the bidirectional suction pump (12) is fixedly connected to the bottom inner wall of the back cover plate (2), and one end of the vent pipe (11) is fixedly connected to one end of the back cover plate (2).
5. The hydraulic rod tightness testing device for railway construction according to claim 4, wherein the inner wall of the rear cover plate (2) is fixedly connected with four positioning hole columns (5), and the inner wall of each positioning hole column (5) is provided with a thread groove.
6. The hydraulic rod tightness testing device for railway construction according to claim 1, wherein a positioning column (27) is fixedly connected to the inner wall of the front cover plate (1), a threaded column (26) is connected to the inner wall of the positioning column (27) in a threaded manner, and a nut (4) is fixedly connected to one end of the threaded column (26).
7. The hydraulic rod tightness test device for railway construction according to claim 6, wherein one end of the front cover plate (1) and the rear cover plate (2) and one end of the first partition plate (6) and the second partition plate (8) are fixedly connected with elastic sealing gaskets (28).
8. The hydraulic rod tightness testing device for railway construction according to claim 7, wherein a heating plate (29) is fixedly connected to the inner wall of the front cover plate (1), a display screen (3) is fixedly connected to one side of the front cover plate (1), and the display screen (3) is electrically connected to the heating plate (29).
9. The hydraulic rod tightness testing device for railway construction according to claim 1, wherein a flange (30) is arranged at the joint of the air pipe joint (15) and the second adjusting air pipe (16), a pipe joint (31) is fixedly connected to the outer wall of one end of the second adjusting air pipe (16), a sealing ring (32) is sleeved at one end of the pipe joint (31), one end of the sealing ring (32) is attached to the air pipe joint (15), and a tightening bolt (33) is in threaded connection with one end of the flange (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110237082.1A CN112964425A (en) | 2021-03-03 | 2021-03-03 | Hydraulic rod sealing performance testing device for railway construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110237082.1A CN112964425A (en) | 2021-03-03 | 2021-03-03 | Hydraulic rod sealing performance testing device for railway construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112964425A true CN112964425A (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110237082.1A Withdrawn CN112964425A (en) | 2021-03-03 | 2021-03-03 | Hydraulic rod sealing performance testing device for railway construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN112964425A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114516360A (en) * | 2022-02-09 | 2022-05-20 | 中国航空油料有限责任公司山东分公司 | Pressure testing device for testing sealing performance of well bolt and fusing valve |
-
2021
- 2021-03-03 CN CN202110237082.1A patent/CN112964425A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114516360A (en) * | 2022-02-09 | 2022-05-20 | 中国航空油料有限责任公司山东分公司 | Pressure testing device for testing sealing performance of well bolt and fusing valve |
| CN114516360B (en) * | 2022-02-09 | 2023-08-04 | 中国航空油料有限责任公司山东分公司 | Pressure testing device for testing tightness of well bolt and fusing valve |
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Application publication date: 20210615 |