CN202187928U - Self-balanced leakage-free process pump for petrochemical engineering - Google Patents
Self-balanced leakage-free process pump for petrochemical engineering Download PDFInfo
- Publication number
- CN202187928U CN202187928U CN2011202729639U CN201120272963U CN202187928U CN 202187928 U CN202187928 U CN 202187928U CN 2011202729639 U CN2011202729639 U CN 2011202729639U CN 201120272963 U CN201120272963 U CN 201120272963U CN 202187928 U CN202187928 U CN 202187928U
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- pump
- volute casing
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- stage
- self
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Abstract
The utility model discloses a self-balanced leakage-free process pump for petrochemical engineering, which comprises a pump body and a pump shaft. A first-stage volute chamber and a second-stage volute chamber which are communicated with each other are sequentially arranged in the pump body in the direction in which the pump shaft extends. A first-stage blade is arranged in the first-stage volute chamber and connected with an inlet port of the pump body. A second-stage blade is arranged in the second-stage volute chamber and connected with an outlet port of the pump body. The first-stage blade and the second-stage blade are arranged opposite to each other. The self-balanced leakage-free process pump has the advantages of being good in sealing effect, small in axial movement, stable and reliable in operation, long in mechanical seal service life, low in maintenance cost and the like.
Description
Technical field
The utility model relates generally to the pumping equipment field, refers in particular to a kind of self balancing that is used for petrochemical industry and does not reveal process pump.
Background technique
The use of process pump is very extensive in petroleum chemical industry, and mechanical seal is generally adopted in the sealing between existing procedure pump middle pump body and the pump shaft.Process pump can produce bigger internal pressure in its volute casing when work, cause mechanical seal place to leak easily; Poorly sealed; And big pressure shortens the working life of mechanical seal, needing to cause frequent repair and replacement being carried out in mechanical seal, has increased the maintenance cost of process pump.
The model utility content
The technical problem that the utility model will solve is: to the technical problem that existing technology exists, provide that a kind of good sealing effect, axial float are little, reliable, the mechanical seal long service life of operating steadily, the self balancing that is used for petrochemical industry that maintenance cost is low do not reveal process pump.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of self balancing that is used for petrochemical industry is not revealed process pump; Comprise the pump housing and pump shaft; The direction that stretches into along pump shaft in the said pump housing is provided with one-level volute casing and the secondary volute casing that is connected successively; Be provided with the one-level impeller in the said one-level volute casing and be communicated with the suction port of the pump housing, be provided with sencond stage impeller in the said secondary volute casing and be communicated with the discharge opening of the pump housing, said one-level impeller and said sencond stage impeller are provided with each other dorsad.
Further improvement as the utility model:
Said one-level volute casing and secondary volute casing are interconnected through a built-in runner.
Compared with prior art, the advantage of the utility model is: the utility model is used for the self balancing of petrochemical industry and does not reveal process pump through the suction of one-level volute casing, secondary volute casing stock; Only produce suction pressure in the one-level volute casing, its pressure is in lower or negative pressure state, because the mechanical sealing element between the pump housing and the pump shaft directly seals the one-level volute casing; Be difficult for leaking so also only bear the pressure of this volute casing; Its good sealing effect, and can obviously improve working life of mechanical seal, maintenance cost is low; Through the impeller in two volute casings is provided with each other dorsad, need not other Equilibrator, axial force that just can self balancing rotor makes process pump axial movement value when work very little, operates steadily reliably; One built-in runner can be set on the pump housing in the utility model be communicated with two volute casings, make structure compact more.
Description of drawings
The self balancing that Fig. 1 is used for petrochemical industry for the utility model is not revealed the main sectional structure schematic representation of process pump;
The self balancing that Fig. 2 is used for petrochemical industry for the utility model is not revealed the right TV structure schematic representation of process pump.
Marginal data:
1, the pump housing; 11, one-level volute casing; 12, secondary volute casing; 13, one-level impeller; 14, sencond stage impeller; 15, suction port; 16, discharge opening; 2, pump shaft; 3, mechanical sealing element; 4, built-in runner.
Embodiment
Below will combine accompanying drawing and specific embodiment that the utility model is done further explain.
As depicted in figs. 1 and 2; A kind of self balancing that is used for petrochemical industry is not revealed process pump; Comprise the pump housing 1 and pump shaft 2; Between the pump housing 1 and the pump shaft 2 mechanical sealing element 3 is housed, the direction that stretches into along pump shaft 2 in the pump housing 1 is provided with the one-level volute casing 11 and secondary volute casing 12 that is connected successively, is provided with one-level impeller 13 in the one-level volute casing 11 and is communicated with the suction port 15 of the pump housing 1; Be provided with sencond stage impeller 14 in the secondary volute casing 12 and be communicated with one-level impeller 13 and sencond stage impeller 14 setting dorsad each other with the discharge opening 16 of the pump housing 1.During this process pump work, through 11 suctions of one-level volute casing, secondary volute casing 12 stocks; Only produce suction pressure in the one-level volute casing 11, its pressure is in lower or negative pressure state, because the mechanical sealing element 3 between the pump housing 1 and the pump shaft 2 directly seals one-level volute casing 11; So this mechanical sealing element 3 also only bears the pressure of one-level volute casing 11 and is difficult for leaking, its good sealing effect is when suction port 15 feeds liquid; Liquid charges into mechanical sealing element 3 soon; Prevented that mechanical sealing element 3 from grinding away because of lacking liquid, can obviously improve the working life of mechanical sealing element 3, maintenance cost is low; Through the impeller in two volute casings is provided with each other dorsad; The axial force that two impellers operations produces can be cancelled out each other, and need not other Equilibrator, axial force that just can self balancing rotor; Make process pump axial movement value when work very little, it is reliable to operate steadily.
In the present embodiment, two volute casings are interconnected through the built-in runner 4 that is provided with on the pump housing 1, make structure compact more.
In addition, the utility model can also be provided with the cold air water circulation system on this process pump, the heat that produces when being used for the cooling process pump operation, and cooling water recirculation system is an existing mature technology, repeats no more at this.
The above only is the preferred implementation of the utility model, and the protection domain of the utility model also not only is confined to the foregoing description, and all technological schemes that belongs under the utility model thinking all belong to the protection domain of the utility model.Should propose, for those skilled in the art, in the improvement and the retouching that do not break away under the utility model principle prerequisite, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (2)
1. a self balancing that is used for petrochemical industry is not revealed process pump; Comprise the pump housing (1) and pump shaft (2); It is characterized in that: the direction that stretches into along pump shaft (2) in the said pump housing (1) is provided with one-level volute casing (11) and the secondary volute casing (12) that is connected successively; Be provided with one-level impeller (13) in the said one-level volute casing (11) and be communicated with the suction port (15) of the pump housing (1); Be provided with sencond stage impeller (14) in the said secondary volute casing (12) and be communicated with the discharge opening (16) of the pump housing (1), said one-level impeller (13) and said sencond stage impeller (14) are provided with each other dorsad.
2. the self balancing that is used for petrochemical industry according to claim 1 is not revealed process pump, it is characterized in that: said one-level volute casing (11) and secondary volute casing (12) are interconnected through a built-in runner (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202729639U CN202187928U (en) | 2011-07-29 | 2011-07-29 | Self-balanced leakage-free process pump for petrochemical engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202729639U CN202187928U (en) | 2011-07-29 | 2011-07-29 | Self-balanced leakage-free process pump for petrochemical engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202187928U true CN202187928U (en) | 2012-04-11 |
Family
ID=45919383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202729639U Expired - Lifetime CN202187928U (en) | 2011-07-29 | 2011-07-29 | Self-balanced leakage-free process pump for petrochemical engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202187928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697411A (en) * | 2016-01-13 | 2016-06-22 | 浙江佳力科技股份有限公司 | Variable-flow oil delivery pump and variable-flow delivery method of oil pipeline |
-
2011
- 2011-07-29 CN CN2011202729639U patent/CN202187928U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697411A (en) * | 2016-01-13 | 2016-06-22 | 浙江佳力科技股份有限公司 | Variable-flow oil delivery pump and variable-flow delivery method of oil pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Changsha Jinggong special industrial pump Co., Ltd. Assignor: Zhou Shouyun Contract record no.: 2013430000140 Denomination of utility model: Self-balanced leakage-free process pump for petrochemical engineering Granted publication date: 20120411 License type: Exclusive License Record date: 20130816 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120411 |
|
| CX01 | Expiry of patent term |