CN210293131U - Upstream pumping liquid film sealing film thickness measuring device - Google Patents
Upstream pumping liquid film sealing film thickness measuring device Download PDFInfo
- Publication number
- CN210293131U CN210293131U CN201921714870.XU CN201921714870U CN210293131U CN 210293131 U CN210293131 U CN 210293131U CN 201921714870 U CN201921714870 U CN 201921714870U CN 210293131 U CN210293131 U CN 210293131U
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- Prior art keywords
- ring seat
- quiet
- rotating ring
- liquid film
- film
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- Expired - Fee Related
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Abstract
The utility model relates to a measuring device, especially a thick measuring device of upper reaches pump sending liquid film sealing film, including axle sleeve, interior hexagonal concave end holding screw, driving pin, rotating ring seat, rotating ring, quiet ring seat, quiet ring, o shape circle, bellows subassembly, transparent gland, slider, Cr membrane beam split layer, glass dish, microscope, laser, image acquisition card etc, the rotating ring is installed on the rotating ring seat, quiet ring installation is on quiet ring seat, bellows subassembly left end is connected with quiet ring seat, and the right-hand member is connected with transparent gland, the rotating ring seat passes through interior hexagonal concave end holding screw and shaft liner connection, the slider sets up on quiet ring seat. Has the advantages that: the method adopts a monochromatic light interference method, utilizes laser to irradiate the slide block, so that the wedge-shaped gap between the slide block and the glass disk forms interference fringes, and after the interference fringes are collected by an image acquisition card, the real-time thickness change of the liquid film can be calculated by utilizing the corresponding relation between the interference fringe gap and the film thickness.
Description
Technical Field
The utility model relates to a measuring device, concretely relates to thick measuring device of upper reaches pump sending liquid film sealing film.
Background
The upstream pumping liquid film seal is used as a non-contact mechanical seal, and the sealed medium leaked from a high-pressure side to a low-pressure side is reversely conveyed to the high-pressure side by the hydrodynamic groove on the sealing end face to avoid leakage. The fluid dynamic pressure groove arranged on the end surface is used for pumping the liquid into the space between the sealing end surfaces to form a layer of extremely thin liquid film, and the quality of the extremely thin lubricating film is the key for showing the sealing performance. The measurement precision of the existing lubricating film measurement technology cannot be guaranteed, calibration is complex, cost is high, meanwhile, the internal structure needs to be greatly improved, and the sealing performance in a sealing cavity is affected, so that the purpose of measurement is difficult to achieve.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem, provide a thick measuring device of upper reaches pump sending liquid film sealing film, adopt monochromatic light interference method, utilize interference fringe and the thick corresponding relation of membrane, obtain the real-time thickness change of liquid film, can reach the requirement of high accuracy, and measure simple and conveniently.
The technical scheme of the utility model as follows:
the utility model provides a thick measuring device of upper reaches pump sending liquid film sealing film, includes axle sleeve, interior hexagonal concave end holding screw, driving pin, rotating ring seat, rotating ring, quiet ring seat, quiet ring, o shape circle, bellows subassembly, transparent gland, slider, Cr membrane beam splitting layer, glass dish, microscope, laser, image acquisition card etc. the rotating ring is installed on the rotating ring seat, quiet ring is installed on quiet ring seat, bellows subassembly left end is connected with quiet ring seat, and the right-hand member is connected with transparent gland, the rotating ring seat passes through interior hexagonal concave end holding screw and shaft liner connection, the slider sets up on quiet ring seat.
A driving pin is arranged between the movable ring seat and the movable ring, and an annular groove for placing an o-shaped ring is formed in each of the movable ring seat and the stationary ring seat.
The movable ring seat, the inner hexagonal concave end set screw, the movable ring and the shaft sleeve rotate along with the shaft, and the slide block is arranged on the stationary ring seat, wherein the inclination angle of the slide block is α.
The laser penetrates through the upper half-reflecting and semi-transmitting lens of the microscope, irradiates the surface of the sliding block through the transparent gland, the glass disc and the Cr film light splitting layer, and forms interference fringe images which are collected on a computer display screen through the image collecting card.
The utility model has the advantages that: the device adopts laser to penetrate through the upper half-reflecting semi-transparent mirror of the microscope, irradiates the surface of the sliding block through the transparent gland, the glass disc and the Cr film light splitting layer, forms interference fringe images which are collected on a computer display screen through an image acquisition card, and can calculate the real-time thickness change of the liquid film by utilizing the corresponding relation between the interference fringe gaps and the film thickness.
Drawings
FIG. 1: a structural schematic diagram of an upstream pumping liquid film sealing film thickness measuring device.
FIG. 2: a hydrodynamic groove type schematic diagram of an upstream pumping liquid film sealing film thickness measuring device.
Description of the symbols:
1. the device comprises a shaft sleeve, 2 parts of an inner hexagonal concave end set screw, 3 parts of a transmission pin, 4 parts of a movable ring seat, 5 parts of a movable ring, 6. o-shaped rings, 7 parts of a static ring seat, 8 parts of a static ring, 9. o-shaped rings, 10 parts of a sliding block, 11 parts of a corrugated pipe assembly, 12 parts of a transparent gland, 13 parts of a Cr film light splitting layer, 14 parts of a glass disc, 15 parts of a microscope, 16 parts of an image acquisition card and 17 parts of laser.
Detailed Description
The technical solution in the embodiment of the present invention will be further explained with reference to the drawings in the embodiment of the present invention.
Example one
As shown in figure 1, the utility model relates to an upstream pumping liquid film sealing film thickness measuring device, which comprises a shaft sleeve (1), an inner hexagonal concave end set screw (2), a driving pin (3), a movable ring seat (4), a movable ring (5), a stationary ring seat (7), a stationary ring (8), an o-shaped ring (6, 9), a bellows component (11), a transparent gland (12), a slide block (10), a Cr film light splitting layer (13), a glass disc (14), a microscope (15), a laser (17), an image acquisition card (16) and the like, the movable ring (5) is arranged on the movable ring seat (4), the static ring (8) is arranged on the static ring seat (7), the left end of the corrugated pipe component (11) is connected with the static ring seat (7), the right end is connected with the transparent gland (12), the movable ring seat (4) is connected with the shaft sleeve (1) through an inner hexagonal concave end set screw (2), and the sliding block (10) is arranged on the stationary ring seat (7).
A transmission pin (3) is arranged between the movable ring seat (4) and the movable ring (5), and annular grooves for placing the o-shaped rings (6, 9) are respectively formed in the movable ring seat (4) and the stationary ring seat (7).
The movable ring seat (4), the inner hexagonal concave end set screw (2), the movable ring (5) and the shaft sleeve (1) rotate along with the shaft, and the slide block (10) is arranged on the stationary ring seat (7) and has an inclination angle of α.
The laser (17) penetrates through the upper half-reflecting and half-transmitting lens of the microscope (15), irradiates the surface of the sliding block (10) through the transparent gland (12), the glass disc (14) and the Cr film light splitting layer (13), and formed interference fringe images are collected on a computer display screen through the image collecting card (16).
The hydrodynamic groove type of the device is as shown in figure 2, when a main shaft does not rotate, stable interference fringes are collected in a static pressure state, after the main shaft rotates, a layer of fluid film is generated by a dynamic pressure effect generated by the hydrodynamic groove, at the moment, the inclination angle of a sliding block (10) changes, a fed-back real-time interference fringe image changes along with the change of the dynamic pressure effect, and the real-time thickness change of the liquid film can be calculated by utilizing the corresponding relation between the interference fringe gap and the film thickness.
The present invention has been described above by way of example, but the present invention is not limited to the above-mentioned embodiments, and any modification made based on the present invention is within the scope of the present invention.
Claims (4)
1. The utility model provides a thick measuring device of upstream pumping liquid film seal film which characterized in that: including axle sleeve (1), hexagon socket head cap holding screw (2), driving pin (3), rotating ring seat (4), rotating ring (5), quiet ring seat (7), quiet ring (8), o shape circle (6, 9), bellows subassembly (11), transparent gland (12), slider (10), Cr membrane beam split layer (13), glass dish (14), microscope (15), laser (17), image acquisition card (16) etc, install on rotating ring seat (4) rotating ring (5), install on quiet ring seat (7) quiet ring (8), bellows subassembly (11) left end is connected with quiet ring seat (7), and the right-hand member is connected with transparent gland (12), rotating ring seat (4) are connected with axle sleeve (1) through hexagon socket head cap holding screw (2), slider (10) set up on quiet ring seat (7).
2. The apparatus for measuring the thickness of a film sealed with an upstream pumped liquid film according to claim 1, wherein: a transmission pin (3) is arranged between the movable ring seat (4) and the movable ring (5), and annular grooves for placing the o-shaped rings (6, 9) are respectively formed in the movable ring seat (4) and the stationary ring seat (7).
3. The device for measuring the sealed film thickness of the upstream pumped liquid film according to claim 1, wherein the movable ring seat (4), the hexagon socket set screw (2), the movable ring (5) and the shaft sleeve (1) rotate along with the shaft, and the slide block (10) is arranged on the stationary ring seat (7) and has an inclination angle of α.
4. The apparatus for measuring the thickness of a film sealed with an upstream pumped liquid film according to claim 1, wherein: the laser (17) penetrates through the upper half-reflecting and half-transmitting lens of the microscope (15), irradiates the surface of the sliding block (10) through the transparent gland (12), the glass disc (14) and the Cr film light splitting layer (13), and formed interference fringe images are collected on a computer display screen through the image collecting card (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921714870.XU CN210293131U (en) | 2019-10-14 | 2019-10-14 | Upstream pumping liquid film sealing film thickness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921714870.XU CN210293131U (en) | 2019-10-14 | 2019-10-14 | Upstream pumping liquid film sealing film thickness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210293131U true CN210293131U (en) | 2020-04-10 |
Family
ID=70066399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921714870.XU Expired - Fee Related CN210293131U (en) | 2019-10-14 | 2019-10-14 | Upstream pumping liquid film sealing film thickness measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210293131U (en) |
-
2019
- 2019-10-14 CN CN201921714870.XU patent/CN210293131U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 Termination date: 20201014 |
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| CF01 | Termination of patent right due to non-payment of annual fee |