CN210603849U - Ultrasonic detection device for mechanical seal start-stop mechanism research - Google Patents
Ultrasonic detection device for mechanical seal start-stop mechanism research Download PDFInfo
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- CN210603849U CN210603849U CN201921592187.3U CN201921592187U CN210603849U CN 210603849 U CN210603849 U CN 210603849U CN 201921592187 U CN201921592187 U CN 201921592187U CN 210603849 U CN210603849 U CN 210603849U
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- Prior art keywords
- ring
- mechanical seal
- stop mechanism
- mechanism research
- testing device
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- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 238000011160 research Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 title description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000003068 static effect Effects 0.000 claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 239000000523 sample Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 12
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003822 epoxy resin Substances 0.000 claims abstract description 4
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 4
- 238000002604 ultrasonography Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 13
- 238000007789 sealing Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000001050 lubricating effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000010438 granite Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses an ultrasonic testing device that is used for mechanical seal to open and stop mechanism research, quiet ring system and rotating ring system including relative setting from top to bottom. The static ring system comprises a water tank; a stationary ring clamping device is fixedly connected to the bottom in the water tank; the upper surface of the static ring clamping device clamps the static ring; the lower end face of the stationary ring is uniformly provided with a plurality of ultrasonic probes around the stationary ring. The diameter of the ultrasonic probe is 3 mm. There are three ultrasound probes. The static ring is made of graphite; the graphite ring material is carbon graphite, epoxy resin or carbon graphite aluminum, the inner diameter is 35mm, and the outer diameter is 40 mm. The utility model discloses an ultrasonic testing device that is used for mechanical seal to open and stop mechanism research has simple structure, detects the characteristics of precision height, detachable.
Description
Technical Field
The utility model belongs to the technical field of the simulation detection device, concretely relates to an ultrasonic testing device that is used for mechanical seal to open and stop mechanism research.
Background
Sealing methods commonly used in the industry are mechanical sealing, packing sealing, and the like. The mechanical seal has the advantages of small leakage amount, long service life, high reliability and the like, and is suitable for the sealing requirements of harsh working conditions such as high temperature, high pressure, vacuum, strong corrosive media, solid particle-containing media and the like in the production process, so the mechanical seal is most widely applied. The mechanical seal is a shaft seal device of a rotating machine, and is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to a rotating axis, keeping fit and relatively sliding under the action of fluid pressure and elastic force (or magnetic force) of a compensation mechanism and the cooperation of auxiliary seals. Common equipment such as centrifugal pumps, centrifuges, reaction kettles, compressors and the like.
For mechanical seals, experimentation is an essential task. Especially, the detection of a start-stop mechanism in a sealing process is a difficult link and is a focus of much attention.
The main content of the research on the start-stop mechanism is to detect the flowing state of the lubricating liquid between the sealing rings and the film forming condition in the whole process of the start-stop motion of the sealing rings. Conventional methods for detecting the thickness of a lubricating film mainly include a resistance method, a capacitance method, and an eddy current method. Because the variation of the lubricating film resistance along with the thickness of the lubricating film is very small, the film thickness can not be accurately measured by using the resistance; the capacitance method can accurately measure the film thickness between two contact surfaces, but is limited to a part of liquid lubricating film, and is not suitable for polar lubricants; similarly, the eddy current method is limited by a plurality of conditions, the working object must be a smooth metal surface, the moving ring needs to have better magnetic conductivity, the surrounding magnetic field needs to be shielded, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a supersound detection device that is used for mechanical seal to open and stops mechanism research has simple structure, detects the high, detachable characteristics of precision.
The utility model discloses the technical scheme who adopts is, a ultrasonic testing device that is used for mechanical seal to open and stops mechanism research, including the quiet ring system and the rotating ring system of relative setting from top to bottom.
The utility model discloses a characteristics still lie in:
the static ring system comprises a water tank; a stationary ring clamping device is fixedly connected to the bottom in the water tank; the upper surface of the static ring clamping device clamps the static ring; the lower end face of the stationary ring is uniformly provided with a plurality of ultrasonic probes around the stationary ring.
The diameter of the ultrasonic probe is 3 mm.
There are three ultrasound probes.
The static ring is made of graphite; the graphite ring material is carbon graphite, epoxy resin or carbon graphite aluminum, the inner diameter is 35mm, and the outer diameter is 40 mm.
The movable ring system comprises a hydraulic cylinder which is vertically arranged; the piston extending end of the hydraulic cylinder is fixedly connected with a motor; the motor is fixedly connected with the top end of the connecting rod through a coupler; the bottom end of the connecting rod is detachably connected with a movable ring; the rotating ring and the static ring are arranged oppositely.
The movable ring is made of 9Cr18 or 4Cr 13.
The ultrasonic probe is electrically connected with the pulse generator; the pulse generator is electrically connected with the signal generator and the acquisition card respectively; the acquisition card is electrically connected with the industrial personal computer.
The device also comprises a frame; the water tank is fixed on the frame; the fixed end of the hydraulic cylinder is fixed on the frame; the bottom of the frame is provided with a leveling bolt.
The utility model has the advantages that:
(1) the device can realize micron-scale speed change of the outer ring of the movable ring by controlling the central rotating part through the servo motor;
(2) the device has simple structure and high mechanical precision, and can ensure that the positioning precision of the hydraulic control vertical lifting rod is within 2.0 mu m and the pressure control precision is within 0.1 MPa;
(3) the device is convenient to process, safe and reliable, the device part for simulating mechanical sealing can be detached, and the starting and stopping processes of various sealing materials can be detected;
(4) the main body part of the device is made of granite materials, so that the influence of external temperature change on the detection precision of the device is reduced;
(5) the base is made of cast iron, so that the stability of the equipment in use is ensured; the leveling bolt arranged at the lower part of the base can adjust the inclination of the table top of the whole test bed, and the workbench is finely adjusted before the test, so that the calibration precision can be ensured.
Drawings
Fig. 1 is a schematic structural diagram of an ultrasonic detection device for mechanical seal start-stop mechanism research according to the present invention;
fig. 2 is the utility model discloses an ultrasonic testing device's electric connection picture for mechanical seal opens and stops mechanism research.
In the figure, 1, a static ring system, 2, a dynamic ring system, 3, a water tank, 4, a static ring clamping device, 5, a static ring, 6, an ultrasonic probe, 7, a hydraulic cylinder, 8, a motor, 9, a coupler, 10, a connecting rod, 11, a dynamic ring, 12, a rack, 13, a pulse generator, 14, a signal generator, 15, an acquisition card and 16, an industrial personal computer are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in FIG. 1, the utility model relates to an ultrasonic testing device for mechanical seal opens and stops mechanism research, including relative quiet ring system 1 and the rotating ring system 2 that sets up from top to bottom.
The stationary ring system 1 comprises a water tank 3; a stationary ring clamping device 4 is fixedly connected to the bottom in the water tank 3; the upper surface of the static ring clamping device 4 clamps the static ring 5; the lower end surface of the stationary ring 5 is uniformly provided with a plurality of ultrasonic probes 6 around the stationary ring. The ultrasonic probe 6 has a diameter of 3 mm. There are three ultrasound probes 6. The static ring 5 is made of graphite; the graphite ring material is carbon graphite, epoxy resin or carbon graphite aluminum, the inner diameter is 35mm, and the outer diameter is 40 mm.
The moving ring system 2 comprises a hydraulic cylinder 7 which is vertically arranged; the piston extending end of the hydraulic cylinder 7 is fixedly connected with a motor 8; the motor 8 is fixedly connected with the top end of the connecting rod 10 through a coupler 9; the bottom end of the connecting rod 10 is detachably connected with a movable ring 11; the rotating ring 11 is disposed opposite to the stationary ring 5. The movable ring 11 is made of 9Cr18 or 4Cr 13. Also includes a frame 12; the water tank 3 is fixed on the frame 12; the fixed end of the hydraulic cylinder 7 is fixed on the frame 12; leveling bolts are arranged at the bottom of the frame 12.
As shown in fig. 2, the ultrasonic probe 6 is electrically connected to the pulse generator 13; the pulse generator 13 is respectively electrically connected with the signal generator 14 and the acquisition card 15; the acquisition card 15 is electrically connected with the industrial personal computer 16.
The utility model is used for mechanical seal opens and stops ultrasonic testing device's that mechanism studied working process (principle) does: calibrating the position and the number of the ultrasonic probes 6; the movable ring 11 is clamped into the bottom end of the connecting rod 10, and quick-drying glue is coated for auxiliary fixation; the ultrasonic probe 6, the pulse generator 13, the signal generator 14, the acquisition card 15 and the industrial personal computer 16 are connected; before testing, firstly, a gradienter is used for detecting the inclination of the movable ring 11, and the leveling bolt is adjusted to level the movable ring 11; firstly, the upper surface of the static ring 5 is contacted with the lower surface of the dynamic ring 11; distilled water is injected into the water tank 3, and the liquid level does not exceed the height of the movable ring 11; starting the motor 8, opening the pulse generator 13, adjusting the position of the movable ring 11 and the pressure between the sealing devices when the movable ring 11 is in contact with the stationary ring 5 through the hydraulic cylinder 7, storing and analyzing the collected data by the industrial personal computer 16, displaying the distribution of liquid and the film forming condition on an interface when starting, and recording the rotating speed and the hydraulic strength of the motor 8 corresponding to each time point.
The utility model is used for mechanical seal opens and stops ultrasonic testing device of mechanism research's advantage does:
(1) the device can realize the circumferential micron-scale speed change of the outer ring of the movable ring by controlling the central rotating part through the servo motor;
(2) the device has simple structure and high mechanical precision, and can ensure that the positioning precision of the hydraulic control vertical lifting rod is within 2.0 mu m and the pressure control precision is within 0.1 MPa;
(3) the device is convenient to process, safe and reliable, the device simulating mechanical sealing is partially detachable, and the starting and stopping processes of various sealing materials can be detected;
(4) the main body part of the device is made of granite materials, so that the influence of external temperature change on the detection precision of the device is reduced;
(5) the equipment base made of cast iron ensures the stability of the test bed, and the leveling bolts of the base adjust the inclination of the table top of the whole test bed, so that the calibration precision is ensured.
Claims (9)
1. The utility model provides an ultrasonic testing device for mechanical seal opens and stops mechanism research which characterized in that: comprises a static ring system (1) and a dynamic ring system (2) which are arranged oppositely up and down.
2. The ultrasonic testing device for mechanical seal start-stop mechanism research of claim 1, wherein: the static ring system (1) comprises a water tank (3); a stationary ring clamping device (4) is fixedly connected to the bottom in the water tank (3); the upper surface of the static ring clamping device (4) clamps the static ring (5); the lower end surface of the static ring (5) is uniformly provided with a plurality of ultrasonic probes (6) around the static ring.
3. The ultrasonic testing device for mechanical seal start-stop mechanism research according to claim 2, characterized in that: the diameter of the ultrasonic probe (6) is 3 mm.
4. The ultrasonic testing device for mechanical seal start-stop mechanism research according to claim 3, wherein: the number of the ultrasonic probes (6) is three.
5. The ultrasonic testing device for mechanical seal start-stop mechanism research according to claim 2, characterized in that: the static ring (5) is made of graphite; the graphite ring material is carbon graphite, epoxy resin or carbon graphite aluminum, the inner diameter is 35mm, and the outer diameter is 40 mm.
6. The ultrasonic testing device for mechanical seal start-stop mechanism research according to claim 2, characterized in that: the moving ring system (2) comprises a hydraulic cylinder (7) which is vertically arranged; the piston extending end of the hydraulic cylinder (7) is fixedly connected with a motor (8); the motor (8) is fixedly connected with the top end of the connecting rod (10) through a coupler (9); the bottom end of the connecting rod (10) is detachably connected with a movable ring (11); the movable ring (11) is arranged opposite to the static ring (5).
7. The ultrasonic testing device for mechanical seal start-stop mechanism research of claim 6, wherein: the movable ring (11) is made of 9Cr18 or 4Cr 13.
8. The ultrasonic testing device for mechanical seal start-stop mechanism research of claim 7, wherein: the ultrasonic probe (6) is electrically connected with the pulse generator (13); the pulse generator (13) is respectively electrically connected with the signal generator (14) and the acquisition card (15); the acquisition card (15) is electrically connected with the industrial personal computer (16).
9. The ultrasonic testing device for mechanical seal start-stop mechanism research according to claim 8, wherein: also comprises a frame (12); the water tank (3) is fixed on the frame (12); the fixed end of the hydraulic cylinder (7) is fixed on the frame (12); the bottom of the frame (12) is provided with a leveling bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921592187.3U CN210603849U (en) | 2019-09-24 | 2019-09-24 | Ultrasonic detection device for mechanical seal start-stop mechanism research |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921592187.3U CN210603849U (en) | 2019-09-24 | 2019-09-24 | Ultrasonic detection device for mechanical seal start-stop mechanism research |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210603849U true CN210603849U (en) | 2020-05-22 |
Family
ID=70690538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921592187.3U Expired - Fee Related CN210603849U (en) | 2019-09-24 | 2019-09-24 | Ultrasonic detection device for mechanical seal start-stop mechanism research |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210603849U (en) |
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2019
- 2019-09-24 CN CN201921592187.3U patent/CN210603849U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220629 Address after: 710000 No. 38, hanghang Third Road, aviation base, Xi'an, Shaanxi Province Patentee after: XI'AN SIFANG ULTRA-LIGHT MATERIALS CO.,LTD. Address before: 710048 Shaanxi province Xi'an Beilin District Jinhua Road No. 5 Patentee before: XI'AN University OF TECHNOLOGY |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 |