CN204327527U - General cavitation performance test run device structure - Google Patents
General cavitation performance test run device structure Download PDFInfo
- Publication number
- CN204327527U CN204327527U CN201420795966.4U CN201420795966U CN204327527U CN 204327527 U CN204327527 U CN 204327527U CN 201420795966 U CN201420795966 U CN 201420795966U CN 204327527 U CN204327527 U CN 204327527U
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- axle sleeve
- test run
- performance test
- device structure
- fixed
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Abstract
The utility model relates to a kind of general cavitation performance test run device structure, and this test run device structure has the function of a small-sized condensate pump structure, has practicability widely.When energy is current domestic nuclear power plant, thermal power plant carries out system, the condensate pump that necessary NPSH is as far as possible low is provided, so just can reduce the effective length of condensate pump first stage impeller to Pump Suction Nozzle, the length of axle and the length of housing of condensate pump is reduced from page, and then reach the size reducing whole pump assembly, reduce costs, reduce civil engineering amount, increase the stability of system.Therefore, this achievement not only has considerable economic benefit, and has the social benefit that cannot estimate.
Description
Technical field:
The utility model relates to a kind of general cavitation performance test run device structure.
Background technique:
Barrel pocket type extraction pump is the leading products of more domestic large pump company independent development developments always, and this product has rational in infrastructure, the feature that hydraulic model is outstanding.Because this kind of water pump is very strict to the requirement of net positive suction head, what some large nuclear power stations developed especially at present required is higher.This kind of water of condensation NPSH value is all done very low by more external large pumps design manufacturers at present, and technology is quite ripe.And the net positive suction head of barrel pocket type extraction pump is the net positive suction head of first stage impeller, if require to do cavitation experiment, the cavitation experiment that only need do first stage impeller is just passable.If net positive suction head reduces, just can reduce the length of pump, cost-saving, the engineering work load of reduction civil engineering, reaches the optimization of unit and system, thus improves this kind of water pump market at home and the occupancy of the world.
Summary of the invention:
The purpose of this utility model is that a kind of structure of design is simple, stable performance, reliable, safe cavitation test run device structure.The technical solution of the utility model is: a kind of general cavitation performance test run device structure, and pump case (10) and effluent seat (11) are close to firmware (22) and are connected; Effluent seat (11) is connected with motor support base (21); Motor (19) is connected with motor support base (21); Impeller (6) is fixed on pump shaft (8) by impeller key (28); Axle sleeve (29) and axle sleeve (32) are arranged on pump shaft (8) by key (4), and axle sleeve (29) and axle sleeve (32) are fixed jointly by nut (1) and nut (33); Suction sleeve (30) and guide bearing (3) are enclosed within axle sleeve (32), and the two is fixed by bearing cap (2) jointly; Wear ring (5) is arranged on volute casing (7); Guide bearing (26) is fixed on volute casing (7) by bearing cap (27), the water intake end of volute casing (7) is connected with suction sleeve (30), and the waterexit end of volute casing (7) is connected with the water intake end of effluent seat (11); Axle sleeve (14) is enclosed within pump shaft (8) by key (24), guide bearing (23) is through on axle sleeve (14), guide bearing (23) is fixed on stuffing box (15) by bearing cap (13), filler (16) is through on axle sleeve (14), and filler (16) is contained in stuffing box (15) by gland (17); Stuffing box (15) is fixed on effluent seat (11); Pump shaft (8) is located by key (20) and coupling (18), and pump shaft (8) is connected by fastening piece (22) and motor (19), when impeller (6) adopts unidirectional suction structure, the structure of volute casing (7) is single volute body structure, key (24) position structure at axle sleeve (9) place becomes snap ring (34) position structure, and when impeller (6) adopts two-way suction structure, the structure of volute casing (7) is double-volute shell structure.
Working procedure of the present utility model is: liquid sucks from the suction of pump case (10), enter in the cylindrical shell of pump case (10) bottom, liquid is sucked from suction sleeve (30) by impeller (6), after entering volute casing (7), outlet along volute casing (7) enters into the seat that spues (10), is finally discharged to outside pump by the water outlet of the seat that spues (10).
Technological merit of the present utility model is:
1, technological merit of the present utility model is, this cavitation test run equipment has versatility widely, has both been applicable to middle-size and small-size thermal power station unit, is also applicable to the barrel pocket type extraction pump equipment of large-scale nuclear power station.
2, technological merit of the present utility model is, the impeller of this cavitation test run equipment and the structure of volute casing can need to change according to different hydraulic models.Impeller both can adopt two-way suction, then volute casing structure is double helix shell structure (as accompanying drawing 3); Impeller also can adopt unidirectional suction, then volute casing structure is single-screw shell structure (as accompanying drawing 4); The structure of volute casing then changes the different flow passage structure needed according to the suction of impeller.According to different unit needs, and the parameter of pump needs, and can select different blade wheel structures and the structure of volute casing.
3, technological merit of the present utility model is, most of parts such as pump case, effluent seat, the motor support base of this vapour examination performance test run device structure are general steel plate weldment, and buying is convenient, and processing is simple.
4, technological merit of the present utility model is, this cavitation performance test run equipment sealing configuration adopts packing seal, and sealing mounting or dismounting are convenient, and cost is low, is suitable for test and uses.
5, technological merit of the present utility model is, easy to operate.The general volume of large-scale cylinder pocket type extraction pump is all larger, and wanting to measure net positive suction head needs whole pump all to load, and very high to the requirement of test factory site, a lot of unit does not have this condition, very inconvenient.
Accompanying drawing illustrates:
Fig. 1 is general cavitation performance test run equipment double-sucking type structural drawing
Fig. 2 is general cavitation performance test run tables of equipment suction structures figure
Fig. 3 double-sided impeller and volute casing structural drawing
Fig. 4 single-suction impeller and volute casing structural drawing
Fig. 5 packing seal structure figure
Embodiment:
Embodiment 1:
As shown in Figure 1, a kind of general cavitation performance test run device structure pump case 10 is close to firmware 22 with effluent seat 11 and is connected; Effluent seat 11 is connected with motor support base 21; Motor 19 is connected with motor support base 21; Impeller 6 is fixed on pump shaft 8 by impeller key 28; Axle sleeve 29 and axle sleeve 32 are arranged on pump shaft 8 by key 4, and axle sleeve 29 and axle sleeve 32 are fixed jointly by nut 1 and nut 33; Suction sleeve 30 and guide bearing 3 are enclosed within axle sleeve 32, and the two is fixed by bearing cap 2 jointly; Wear ring 5 is arranged on volute casing 7; Guide bearing 26 is fixed on volute casing 7 by bearing cap 27, and the water intake end of volute casing 7 is connected with suction sleeve 30, and the waterexit end of volute casing 7 is connected with the water intake end of effluent seat 11; Axle sleeve 14 is enclosed within pump shaft 8 by key 24, and guide bearing 23 is through on axle sleeve 14, and guide bearing 23 is fixed on stuffing box 15 by bearing cap 13, and filler 16 is through on axle sleeve 14, and filler 16 is contained in stuffing box 15 by gland 17; Stuffing box 15 is fixed on effluent seat 11; Pump shaft 8 is located by key 20 and coupling 18, and pump shaft 8 is connected by fastening piece 22 and motor 19.
Pump case 10, effluent seat 11, motor support base 21 are Plate Welding part.
Pump case 10 is the overall structure of welding, also plays the effect of water inlet pipe simultaneously.
As shown in Figure 5, sealing configuration adopts packing seal structure, and stuffing box 15 is fixed on effluent seat 11; Filler 16 is through on axle sleeve 14, and filler 16 is contained in stuffing box 15 by gland 17.
As shown in Figure 3, impeller 6 adopts two-way suction structure, and the structure of volute casing 7 is double-volute shell structure.
Embodiment 2:
As shown in Figure 2, impeller 6 adopts two-way suction structure in embodiment 1, and in the present embodiment, impeller 6 adopts unidirectional suction structure, and as shown in Figure 4, the structure of volute casing 7 is single volute body structure, and key 24 position structure at axle sleeve 9 place becomes snap ring 34 position structure.
Other structure of the present embodiment is all identical with embodiment 1, does not here repeat.
Claims (6)
1. a general cavitation performance test run device structure, is characterized in that: pump case (10) and effluent seat (11) are close to firmware (22) and are connected; Effluent seat (11) is connected with motor support base (21); Motor (19) is connected with motor support base (21); Impeller (6) is fixed on pump shaft (8) by impeller key (28); Axle sleeve (29) and axle sleeve (32) are arranged on pump shaft (8) by key (4), and axle sleeve (29) and axle sleeve (32) are fixed jointly by nut (1) and nut (33); Suction sleeve (30) and guide bearing (3) are enclosed within axle sleeve (32), and the two is fixed by bearing cap (2) jointly; Wear ring (5) is arranged on volute casing (7); Guide bearing (26) is fixed on volute casing (7) by bearing cap (27), the water intake end of volute casing (7) is connected with suction sleeve (30), and the waterexit end of volute casing (7) is connected with the water intake end of effluent seat (11); Axle sleeve (14) is enclosed within pump shaft (8) by key (24), guide bearing (23) is through on axle sleeve (14), guide bearing (23) is fixed on stuffing box (15) by bearing cap (13), filler (16) is through on axle sleeve (14), and filler (16) is contained in stuffing box (15) by gland (17); Stuffing box (15) is fixed on effluent seat (11); Pump shaft (8) is located by key (20) and coupling (18), and pump shaft (8) is connected by fastening piece (22) and motor (19).
2. one according to claim 1 general cavitation performance test run device structure, is characterized in that: pump case (10), effluent seat (11), motor support base (21) are Plate Welding part.
3. one according to claim 1 general cavitation performance test run device structure, is characterized in that: pump case (10) is the overall structure of welding, also plays the effect of water inlet pipe simultaneously.
4. one according to claim 1 general cavitation performance test run device structure, is characterized in that: sealing configuration adopts packing seal structure, and stuffing box (15) is fixed on effluent seat (11); Filler (16) is through on axle sleeve (14), and filler (16) is contained in stuffing box (15) by gland (17).
5. the one general cavitation performance test run device structure according to claim 1 or 2 or 3 or 4, it is characterized in that: impeller (6) adopts unidirectional suction structure, the structure of volute casing (7) is single volute body structure, and key (24) position structure at axle sleeve (9) place becomes snap ring (34) position structure.
6. the one general cavitation performance test run device structure according to claim 1 or 2 or 3 or 4, is characterized in that: impeller (6) adopts two-way suction structure, the structure of volute casing (7) is double-volute shell structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795966.4U CN204327527U (en) | 2014-12-15 | 2014-12-15 | General cavitation performance test run device structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795966.4U CN204327527U (en) | 2014-12-15 | 2014-12-15 | General cavitation performance test run device structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327527U true CN204327527U (en) | 2015-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420795966.4U Withdrawn - After Issue CN204327527U (en) | 2014-12-15 | 2014-12-15 | General cavitation performance test run device structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204327527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500415A (en) * | 2014-12-15 | 2015-04-08 | 哈尔滨电气动力装备有限公司 | Universal cavitation performance trial run equipment structure |
-
2014
- 2014-12-15 CN CN201420795966.4U patent/CN204327527U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500415A (en) * | 2014-12-15 | 2015-04-08 | 哈尔滨电气动力装备有限公司 | Universal cavitation performance trial run equipment structure |
| CN104500415B (en) * | 2014-12-15 | 2016-10-26 | 哈尔滨电气动力装备有限公司 | General cavitation performance test run device structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150513 Effective date of abandoning: 20161012 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |