CN112556949A - Loading and unloading machine mechanical seal performance test device - Google Patents
Loading and unloading machine mechanical seal performance test device Download PDFInfo
- Publication number
- CN112556949A CN112556949A CN202011524668.8A CN202011524668A CN112556949A CN 112556949 A CN112556949 A CN 112556949A CN 202011524668 A CN202011524668 A CN 202011524668A CN 112556949 A CN112556949 A CN 112556949A
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- ring
- assembly
- static
- middle cavity
- seat
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- 238000011056 performance test Methods 0.000 title claims abstract description 8
- 230000003068 static effect Effects 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 210000004907 gland Anatomy 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000012857 radioactive material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0042—Force sensors associated with force applying means applying a torque
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention discloses a mechanical sealing performance test device of a loading and unloading machine, which comprises a shell assembly, a sealing assembly, a rotating assembly and a control motor, wherein a moving ring assembly and a static ring assembly are arranged in the sealing assembly, and the moving ring assembly and the static ring assembly are in contact with the end surface of a static ring through a moving ring; the invention has the following advantages: by adopting the technical scheme, the mechanical seal performance testing device has the advantages of reasonable structure and reliable and stable use, and can test the mechanical seal performance of a material loading and unloading machine, the process is safe and stable, and the test result is accurate and reliable.
Description
Technical Field
The invention relates to the technical field of mechanical sealing, in particular to a mechanical sealing performance testing device for a material loading and unloading machine.
Background
The loading and unloading machine is an important device of a nuclear island of a nuclear power station, the mechanical seal of the loading and unloading machine is an important part of the loading and unloading machine, the loading and unloading machine is used for isolating radioactive materials in a cavity of a push rod from lubricating oil in a gear box at the rear part of the push rod, and the leakage rate of the radioactive materials mechanically sealed by the loading and unloading machine must be limited on the premise that the push rod lead screw can freely rotate. The mechanical seal of the material loading and unloading machine of a certain nuclear power station adopts a multi-spring, balanced and convergent conical surface structure. The end face of the dynamic ring of the mechanical seal is a conical surface, and the end face of the static ring is a plane, as shown in figure 3. At present, the situation that the rotating torque is too large or the leakage rate is too low can occur after the movable ring and the static ring of newly purchased inlet spare parts are installed in a loading and unloading machine in the nuclear power station, and the use requirement of equipment can not be met. Therefore, the matching rationality of the movable ring and the static ring is very important to detect, and a friction pair formed by the suitable movable ring and the static ring can meet the rotating torque under the specified working condition and a certain amount of leakage rate required by equipment when being installed in the equipment.
In order to solve the above problems: the testing device is designed and manufactured by the special testing device for detecting the mechanical sealing performance of the handler, and the mechanical sealing part contained in the testing device ensures that the type and the design parameters of the convergent conical surface mechanical sealing structure used by the handler of the nuclear power station are kept consistent.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a mechanical sealing performance testing device for a loading and unloading machine.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a mechanical sealing performance test device for a loading and unloading machine comprises a shell assembly, a sealing assembly, a rotating assembly and a control motor, wherein a moving ring assembly A and a static ring assembly B are arranged in the sealing assembly, and the moving ring assembly A and the static ring assembly B are in contact with the end face of a static ring through a moving ring to form a friction pair;
the shell assembly comprises a gland, a middle cavity and a bottom cavity; the gland is fixedly connected with the middle cavity through a gland coupling screw, and an O-shaped ring of the middle cavity is pressed in an O-ring groove of the middle cavity; the middle cavity and the bottom cavity are fixedly connected through a middle cavity connecting screw, an O-shaped ring of the bottom cavity is pressed in an O-shaped ring groove of the bottom cavity, and the bottom cavity and the connecting disc are fixedly connected through a bottom cavity connecting screw; the connecting disc is fixedly connected with the control motor through a connecting disc connecting screw; the control motor is connected with the driving disc through a driving disc connecting screw, and the rotating assembly is arranged in the shell assembly;
the rotating assembly comprises a shaft, an end cover connecting screw, a shaft sleeve, a spring seat, a spring, a shaft sleeve O-shaped ring and a bearing; the bearing is mounted on the shaft; the bearing is arranged in the bottom cavity and is pressed and positioned through the middle cavity; the shaft sleeve is provided with a shaft sleeve O-shaped ring () and then is arranged on the shaft; the shaft sleeve and the end cover are connected and fixed through an end cover connecting screw; one end of the shaft, which is far away from the rotating assembly, is matched with a driving hole in the driving disc, so that the shaft is fixed in the circumferential direction;
the movable ring component A comprises a spring seat, a spring, a movable ring, a spring seat O-shaped ring and a movable ring O-shaped ring; a spring seat O-shaped ring is arranged on the spring seat; the spring seat () is mounted on the shaft sleeve; the movable ring is arranged on a spring seat provided with a movable ring O-shaped ring and a spring;
the static ring component B comprises a static ring, a static ring O-shaped ring, a static ring seat O-shaped ring, a threaded pin, a bearing isolator and an oil seal. The static ring is arranged on a static ring seat provided with a static ring O-shaped ring and a static ring seat O-shaped ring; the static ring seat is arranged on the middle cavity and is positioned by a threaded pin arranged on the middle cavity; the bearing isolator is arranged in a third step hole of the middle cavity in the direction opposite to the end face of the static ring; the oil seal is arranged in a second step hole of the middle cavity; and the static ring O-shaped ring and the static ring seat O-shaped ring are arranged on the static ring seat.
As a preferable scheme, an exhaust port is arranged at the upper part of the middle cavity; the lower part of the middle cavity is provided with a mechanical seal leakage hole and an oil-water leakage hole.
As a preferred scheme, the upper part of the gland is provided with a liquid inlet.
The invention has the following advantages: due to the adoption of the technical scheme, the designed and manufactured testing device has the advantages of reasonable structure and reliable and stable use. The test device is used for testing the performance of the mechanical seal with the convergent conical surface used by the loading and unloading machine, and the torque and the leakage rate of the friction pair are detected, so that the friction pair group meeting the equipment requirement can be matched, and the mechanical seal arranged on the loading and unloading machine is ensured to meet the use requirement of the equipment. The test process is safe and stable, and the test result is accurate and reliable.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the drive disc.
Fig. 3 is a schematic structural diagram of a mechanical seal friction pair.
As shown in the figure: 1. gland, 2, fastening screw, 3, end cover, 4, shaft sleeve, 5, spring seat, 6, spring, 7, movable ring, 8, stationary ring, 9, intermediate cavity O-ring, 10, stationary ring seat, 11, stationary ring seat O-ring, 12, intermediate cavity, 13, bearing isolator, 14, oil seal, 15, intermediate cavity coupling screw, 16, bottom cavity O-ring, 17, shaft sleeve O-ring, 18, spring seat O-ring, 19, movable ring O-ring, 20, stationary ring O-ring, 21, threaded pin, 22, bearing, 23, gland coupling screw, 24, bottom cavity, 25, drive disk coupling screw, 26, drive disk, 27, connection disk, 28, bottom cavity coupling screw, 29, control motor, 30, connection disk coupling screw, 31, shaft, 32, exhaust port, 33, machine seal leakage hole, 34, oil-water leakage hole, 35, liquid inlet A, movable ring component, B. a stationary ring assembly.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.
Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
With reference to the attached drawings, the mechanical sealing performance test device for the loading and unloading machine comprises a shell assembly, a sealing assembly, a rotating assembly and a control motor 29, wherein a moving ring assembly A and a static ring assembly B are arranged in the sealing assembly, and the moving ring assembly A and the static ring assembly B are in contact with the end face of a static ring 8 through a moving ring 7 to form a friction pair; the shell assembly comprises a gland 1, a middle cavity 12 and a bottom cavity 24; the gland 1 is fixedly connected with the middle cavity 12 through a gland coupling screw 23, and the middle cavity O-shaped ring 9 is pressed in an O-ring groove of the middle cavity 12; the middle cavity 12 and the bottom cavity 24 are fixedly connected through a middle cavity connecting screw 15, a bottom cavity O-shaped ring 16 is pressed in an O-shaped ring groove of the bottom cavity 24, and the bottom cavity 24 and a connecting disc 27 are fixedly connected through a bottom cavity connecting screw 28; the connecting disc 27 and the control motor 29 are fixedly connected through a connecting disc coupling screw 31; the control motor 29 is connected with the driving disc 26 through a driving disc coupling screw 25, and the rotating assembly is arranged in the shell assembly; the rotating assembly comprises a shaft 31, an end cover 3, an end cover connecting screw 2, a shaft sleeve 4, a spring seat 5, a spring 6, a shaft sleeve O-shaped ring 17 and a bearing 22; the bearing 22 is mounted on the shaft 31; the bearing 22 is arranged in a bottom cavity 24 and is pressed and positioned through the middle cavity 12; the shaft sleeve 4 is provided with a shaft sleeve O-shaped ring (17) and then is arranged on the shaft 31; the shaft sleeve 4 and the end cover 3 are connected and fixed through an end cover connecting screw 2; one end of the shaft 31 far away from the rotating assembly is matched with a driving hole in the driving disc 26, so that the circumferential direction is fixed; the moving ring component A comprises a spring seat 5, a spring 6, a moving ring 7, a spring seat O-shaped ring 18 and a moving ring O-shaped ring 19; a spring seat O-shaped ring 18 is arranged on the spring seat 5; the spring seat (5) is arranged on the shaft sleeve 4; the movable ring 7 is arranged on the spring seat 5 provided with the movable ring O-shaped ring 19 and the spring 6; the static ring component B comprises a static ring 8, a static ring O-shaped ring 20, a static ring seat 10, a static ring seat O-shaped ring 11, a threaded pin 21, a bearing isolator 13 and an oil seal 14. The static ring 8 is arranged on a static ring seat 10 provided with a static ring O-shaped ring 20 and a static ring seat O-shaped ring 11; the static ring seat 10 is arranged on the middle cavity 12 and is positioned by a threaded pin 21 arranged on the middle cavity 12; the bearing isolator 13 is arranged in a third step hole of the middle cavity 12 in the direction opposite to the end face of the stationary ring; the oil seal 14 is arranged in a second step hole of the middle cavity 12; the fixed ring O-shaped ring 20 and the fixed ring seat O-shaped ring 11 are arranged on the fixed ring seat 10, and an exhaust port 33 is arranged at the upper part of the middle cavity 12; the lower part of the middle cavity 12 is provided with a mechanical seal leakage hole 34 and an oil-water leakage hole 35, and the upper part of the gland 1 is provided with a liquid inlet 36.
The invention works as follows: before the work, install the quiet ring on quiet ring seat earlier, fix a position through the screw pin on the quiet ring seat. The rotating ring assembly is then mounted on the hub. Then the shaft sleeve is arranged on the shaft, and the shaft sleeve and the shaft are connected and fixed through the end cover. And finally, assembling the gland and the O-shaped ring. When the device works, the gland and the middle cavity form a closed cavity, a medium enters through the liquid inlet and is exhausted through the air outlet until the inside of the cavity is completely filled with the medium. At the moment, the air outlet is closed, the liquid inlet provides pressure for the cavity, and the pressure is adjusted to the test requirement. At the moment, a standard measuring cup can be arranged below the leakage hole, the leakage amount in the test process is acquired, and the data is read after the specified time. And when the test operation specified time is reached, the driving motor is disconnected, and the torque force is measured on the shaft by using the torque force measuring wrench to obtain the torque parameters required by the test. In this test device, oil blanket and bearing isolator can distinguish the partition with seal chamber, and the unable bearing position that gets into of medium, the unable seal chamber that gets into of lubricating oil in the bearing simultaneously for the medium in the seal chamber is clean pollution-free, can not get into the medium in the bearing simultaneously, makes the bearing life-span can not receive the influence. The test device adopts a mounting mode of a plurality of bearings, and can ensure the coaxiality and the stability of the shaft. The purposes of safety, reliability, stable operation and accurate test result are finally realized through the structural design.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (3)
1. The utility model provides a loading and unloading machine mechanical seal performance test device which characterized in that: the device comprises a shell assembly, a sealing assembly, a rotating assembly and a control motor (29), wherein a moving ring assembly (A) and a static ring assembly (B) are arranged in the sealing assembly, and the moving ring assembly (A) and the static ring assembly (B) are in contact with the end surface of a static ring (8) through a moving ring (7) to form a friction pair;
the shell assembly comprises a gland (1), a middle cavity (12) and a bottom cavity (24); the gland (1) is fixedly connected with the middle cavity (12) through a gland connecting screw (23), and an O-shaped ring (9) of the middle cavity is pressed in an O-ring groove of the middle cavity (12); the middle cavity (12) and the bottom cavity (24) are fixedly connected through a middle cavity connecting screw (15), the bottom cavity O-shaped ring (16) is pressed in an O-shaped ring groove of the bottom cavity (24), and the bottom cavity (24) and the connecting disc (27) are fixedly connected through a bottom cavity connecting screw (28); the connecting disc (27) and the control motor (29) are fixedly connected through a connecting disc coupling screw (31); the control motor (29) is connected with the driving disc (26) through a driving disc coupling screw (25), and the rotating assembly is arranged in the shell assembly;
the rotating assembly comprises a shaft (31), an end cover (3), an end cover connecting screw (2), a shaft sleeve (4), a spring seat (5), a spring (6), a shaft sleeve O-shaped ring (17) and a bearing (22); the bearing (22) is mounted on a shaft (31); the bearing (22) is arranged in the bottom cavity (24) and is pressed and positioned through the middle cavity (12); the shaft sleeve (4) is provided with a shaft sleeve O-shaped ring (17) and then is arranged on the shaft (31); the shaft sleeve (4) and the end cover (3) are connected and fixed through an end cover connecting screw (2); one end of the shaft (31) far away from the rotating assembly is matched with a driving hole in the driving disc (26) to ensure that the shaft is fixed in the circumferential direction;
the moving ring assembly (A) comprises a spring seat (5), a spring (6), a moving ring (7), a spring seat O-shaped ring (18) and a moving ring O-shaped ring (19); a spring seat O-shaped ring (18) is arranged on the spring seat (5); the spring seat (5) is arranged on the shaft sleeve (4); the movable ring (7) is arranged on a spring seat (5) provided with a movable ring O-shaped ring (19) and a spring (6);
the static ring component (B) comprises a static ring (8), a static ring O-shaped ring (20), a static ring seat (10), a static ring seat O-shaped ring (11), a threaded pin (21), a bearing isolator (13) and an oil seal (14). The static ring (8) is arranged on a static ring seat (10) provided with a static ring O-shaped ring (20) and a static ring seat O-shaped ring (11); the static ring seat (10) is arranged on the middle cavity (12) and is positioned through a threaded pin (21) arranged on the middle cavity (12); the bearing isolator (13) is arranged in a third step hole of the middle cavity (12) in the direction opposite to the end face of the static ring; the oil seal (14) is arranged in a second step hole of the middle cavity (12); the static ring O-shaped ring (20) and the static ring seat O-shaped ring (11) are arranged on the static ring seat (10).
2. The mechanical sealing performance test device of the loading and unloading machine according to claim 1, characterized in that: an exhaust port (33) is arranged at the upper part of the middle cavity (12); the lower part of the middle cavity (12) is provided with a mechanical seal leakage hole (34) and an oil-water leakage hole (35).
3. The mechanical sealing performance test device of the loading and unloading machine according to claim 2, characterized in that: the upper part of the gland (1) is provided with a liquid inlet (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524668.8A CN112556949B (en) | 2020-12-22 | 2020-12-22 | Loading and unloading machine mechanical seal performance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524668.8A CN112556949B (en) | 2020-12-22 | 2020-12-22 | Loading and unloading machine mechanical seal performance test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112556949A true CN112556949A (en) | 2021-03-26 |
| CN112556949B CN112556949B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011524668.8A Active CN112556949B (en) | 2020-12-22 | 2020-12-22 | Loading and unloading machine mechanical seal performance test device |
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| CN (1) | CN112556949B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0450744A (en) * | 1990-06-20 | 1992-02-19 | Hitachi Ltd | Method and device for leak inspection of mechanical seal |
| CN1825083A (en) * | 2006-03-27 | 2006-08-30 | 南京化工职业技术学院 | Multi-parameter controllable high-rotating speed mechanical sealing performance tester |
| CN103267613A (en) * | 2013-05-06 | 2013-08-28 | 南京林业大学 | Mechanical seal performance testing device |
| CN104330223A (en) * | 2014-11-26 | 2015-02-04 | 南京林业大学 | Mechanical sealing property testing device and method for measuring axial force and temperature of sealed end surfaces |
| CN106439036A (en) * | 2016-11-09 | 2017-02-22 | 上海电气凯士比核电泵阀有限公司 | Fluid dynamic pressure type mechanical sealing structure |
| CN206248285U (en) * | 2016-10-12 | 2017-06-13 | 中国石油大学(华东) | A kind of mechanical seal end surface liquid film phase transformation visual experimental apparatus |
| CN107764488A (en) * | 2017-11-23 | 2018-03-06 | 南京林业大学 | Mechanical seal leakage method of testing and device |
| CN109141759A (en) * | 2018-10-14 | 2019-01-04 | 南京林业大学 | A kind of dynamic and static ring end face contact pressure real-time and precise regulating mechanism towards mechanical sealing performance tester |
| CN214096513U (en) * | 2020-12-22 | 2021-08-31 | 成都龙源科能机械设备有限公司 | Loading and unloading machine mechanical seal performance test device |
-
2020
- 2020-12-22 CN CN202011524668.8A patent/CN112556949B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0450744A (en) * | 1990-06-20 | 1992-02-19 | Hitachi Ltd | Method and device for leak inspection of mechanical seal |
| CN1825083A (en) * | 2006-03-27 | 2006-08-30 | 南京化工职业技术学院 | Multi-parameter controllable high-rotating speed mechanical sealing performance tester |
| CN103267613A (en) * | 2013-05-06 | 2013-08-28 | 南京林业大学 | Mechanical seal performance testing device |
| CN104330223A (en) * | 2014-11-26 | 2015-02-04 | 南京林业大学 | Mechanical sealing property testing device and method for measuring axial force and temperature of sealed end surfaces |
| CN206248285U (en) * | 2016-10-12 | 2017-06-13 | 中国石油大学(华东) | A kind of mechanical seal end surface liquid film phase transformation visual experimental apparatus |
| CN106439036A (en) * | 2016-11-09 | 2017-02-22 | 上海电气凯士比核电泵阀有限公司 | Fluid dynamic pressure type mechanical sealing structure |
| CN107764488A (en) * | 2017-11-23 | 2018-03-06 | 南京林业大学 | Mechanical seal leakage method of testing and device |
| CN109141759A (en) * | 2018-10-14 | 2019-01-04 | 南京林业大学 | A kind of dynamic and static ring end face contact pressure real-time and precise regulating mechanism towards mechanical sealing performance tester |
| CN214096513U (en) * | 2020-12-22 | 2021-08-31 | 成都龙源科能机械设备有限公司 | Loading and unloading machine mechanical seal performance test device |
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| CN112556949B (en) | 2024-06-18 |
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