CN203394795U - PIV experiment table used for internal flow field measurement of deep well centrifugal pump - Google Patents
PIV experiment table used for internal flow field measurement of deep well centrifugal pump Download PDFInfo
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- CN203394795U CN203394795U CN201320300002.3U CN201320300002U CN203394795U CN 203394795 U CN203394795 U CN 203394795U CN 201320300002 U CN201320300002 U CN 201320300002U CN 203394795 U CN203394795 U CN 203394795U
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- flow field
- deep well
- centrifugal pump
- piv
- pump
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Abstract
The utility model discloses a PIV experiment table used for an internal flow field measurement of a deep well centrifugal pump. The experiment table can be used for realizing the internal flow field measurement of a first stage impeller and a last stage diversion shell of the single-stage or multi-stage deep well centrifugal pump by employing PIV. A whole pump shaft is supported by water-lubricated bearings arranged in the left and right ends. Each of an inlet segment and an outlet segment of the pump is provided with a mirror with a central hole for refraction of an internal flow field image of the impeller and the diversion shell. Therefore, enough placement space can be provided for a CCD camera and a laser device which are necessary for PIV shooting; and the problem that the internal flow field measurement cannot be conducted directly in the axial direction as the impeller of the deep well centrifugal pump has a relatively small diameter and the pump shaft of the deep well centrifugal pump is relatively long is solved.
Description
Affiliated technical field
The present invention is a kind of PIV Laboratory Furniture of measuring for centrifugal pump for deep well interior flow field, can carry out PIV flow field survey to common radial-flow type single-stage or multistage deep well centrifugal pump.
Background technique
The English full name of PIV is Particle Image Velocimetry, claims again particle image velocimetry method, is a kind of transient state, multiple spot, touchless fluid mechanics speed-measuring method, is widely used in flow-field test and measures.
Centrifugal pump for deep well, due in underground work, is subject to the restriction of hole diameter, and its diameter is less.Mostly adopt flow channel type blower inlet casing, compact structure is exquisite simultaneously.How centrifugal pump for deep well interior flow field is carried out to PIV flow field survey, for analysis stream field structure, improve pump performance and there is important basic theory meaning.
At present for volute centrifugal pump, or the larger pump of other impeller diameters, there is a large amount of bibliographical informations about PIV flow field survey device both at home and abroad, yet for the interior flow field measurement method of centrifugal pump for deep well, not yet retrieve pertinent literature both at home and abroad.
Summary of the invention
Less in order to overcome centrifugal pump for deep well impeller diameter, pump shaft is longer, cannot be in the problem that axially stream field is directly measured, and the present invention has designed a kind of Laboratory Furniture of realizing PIV flow field survey by mirror-reflection.At pump shaft two ends, arrange two water lubriucated bearings, solved laying and fixation problem of major axis.
Technological scheme of the present invention is:
1. Laboratory Furniture supports whole pump shaft by two of left and right water lubriucated bearing, by having the minute surface of center hole, the interior flow field of impeller and blower inlet casing is reflected.
2. the whole pump shaft on Laboratory Furniture becomes ladder decline shape from left to right, and the water lubriucated bearing diameter on the water lubriucated bearing diameter compare great ， right side in left side is less, and stepped pump shaft can meet requirement of strength, and can realize pinpoint effect; The pump shaft left end of Laboratory Furniture is installed mechanical seal, and has designed through flow hole and carried out the heat cooling that mechanical seal under High Rotation Speed is produced.
For the minute surface that reflects when laying and pump shaft be 45 degree angles, minute surface center hole is ellipticity, oval size is carried out calculative determination according to the outer diameter of laid pipeline.
The present invention has realized multistage deep well centrifugal pump PIV interior flow field and has measured, and for research pump body flow field structure, the design method and the performance that improve deep-well pump are significant.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the embodiment sketch (take single-stage pump as example) of the present invention on centrifugal pump for deep well;
Fig. 2 is the plan view of minute surface in the embodiment of the present invention;
In figure: 1. the left water lubriucated bearing of the right minute surface of the right water lubriucated bearing 4. of inlet port 2. pump shaft 3. 5. impeller 6. blower inlet casing 7. left minute surface 8.PIV special-purpose CCD camera 10. outlet elbow 11. through flow hole 12. gland 13. mechanical seal 14. of special-purpose generating laser 9.PIV
Embodiment
Embodiment illustrated in fig. 1 is PIV experiments of measuring platform to a centrifugal pump for deep well being comprised of impeller 5 and blower inlet casing 6, can realize single-stage or multistage centrifugal pump for deep well are carried out to flow field survey, left water lubriucated bearing 14 has been laid at the two ends, left and right of whole pump shaft 2 and right water lubriucated bearing 3 supports impeller 5 and blower inlet casing 6, pump shaft 2 left ends are realized sealing by gland 12 and mechanical seal 13, and by through flow hole 11, mechanical seal 13 are lowered the temperature.In impeller inlet front side, arrange right minute surface 4, at blower inlet casing 6 rear sides, arrange left minute surface 7, the angle of minute surface and pump shaft 2 is 45 degree, by the special-purpose generating laser 8 of PIV, sending laser irradiates the inside of impeller or stator, through the reflection of minute surface, by PIV specialty CCD camera stream field image, take.
Fig. 2 is the plan view of left minute surface 7 and right minute surface 4, and the size in the ellipticity hole in minute surface is calculated decision according to the diameter of the outlet section of the inducer of impeller 5 front sides and blower inlet casing 7 rear sides.
Claims (3)
1. a PIV Laboratory Furniture of measuring for centrifugal pump for deep well interior flow field, can take measurement to the axial flow field of centrifugal pump for deep well, it is characterized in that: this PIV Laboratory Furniture supports whole pump shaft by two of left and right water lubriucated bearing, by thering is the minute surface of center hole, the interior flow field of impeller and blower inlet casing is reflected.
2. the PIV Laboratory Furniture of measuring for centrifugal pump for deep well interior flow field as claimed in claim 1, it is characterized in that: whole pump shaft becomes ladder decline shape from left to right, the water lubriucated bearing diameter in left side is larger, the water lubriucated bearing diameter on right side is less, stepped pump shaft can meet requirement of strength, and can realize pinpoint effect; The pump shaft left end of Laboratory Furniture is installed mechanical seal, and has designed through flow hole and carried out the heat cooling that mechanical seal under High Rotation Speed is produced.
3. the PIV Laboratory Furniture of measuring for centrifugal pump for deep well interior flow field as claimed in claim 1, it is characterized in that: for the minute surface that reflects when laying and pump shaft be 45 degree angles, minute surface center hole is ellipticity, and oval size is carried out calculative determination according to the outer diameter of laid pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320300002.3U CN203394795U (en) | 2013-05-23 | 2013-05-23 | PIV experiment table used for internal flow field measurement of deep well centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320300002.3U CN203394795U (en) | 2013-05-23 | 2013-05-23 | PIV experiment table used for internal flow field measurement of deep well centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394795U true CN203394795U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320300002.3U Expired - Fee Related CN203394795U (en) | 2013-05-23 | 2013-05-23 | PIV experiment table used for internal flow field measurement of deep well centrifugal pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN203394795U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410744A (en) * | 2013-05-23 | 2013-11-27 | 江苏大学 | Deep well centrifugal pump PIV internal flow field measuring device |
| CN105952661A (en) * | 2016-06-15 | 2016-09-21 | 浙江工业大学 | Visual experiment device for centrifugal pump impeller |
| CN110043469A (en) * | 2019-04-03 | 2019-07-23 | 江苏大学 | A kind of self-absorption centrifugal pump configuration carrying out interior flow field PIV measurement and PIV measurement method |
-
2013
- 2013-05-23 CN CN201320300002.3U patent/CN203394795U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410744A (en) * | 2013-05-23 | 2013-11-27 | 江苏大学 | Deep well centrifugal pump PIV internal flow field measuring device |
| CN105952661A (en) * | 2016-06-15 | 2016-09-21 | 浙江工业大学 | Visual experiment device for centrifugal pump impeller |
| CN110043469A (en) * | 2019-04-03 | 2019-07-23 | 江苏大学 | A kind of self-absorption centrifugal pump configuration carrying out interior flow field PIV measurement and PIV measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20140523 |