CN201535275U - Canned motor pump for conveying medium susceptible to gasification - Google Patents
Canned motor pump for conveying medium susceptible to gasification Download PDFInfo
- Publication number
- CN201535275U CN201535275U CN2009202480718U CN200920248071U CN201535275U CN 201535275 U CN201535275 U CN 201535275U CN 2009202480718 U CN2009202480718 U CN 2009202480718U CN 200920248071 U CN200920248071 U CN 200920248071U CN 201535275 U CN201535275 U CN 201535275U
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- China
- Prior art keywords
- pump
- impeller
- medium
- motor
- rotor assembly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a canned motor pump for conveying medium susceptible to gasification. The canned motor pump comprises a pump body, an impeller, a shield motor, a back pump cover and an auxiliary impeller, wherein the shield motor is composed of a stator assembly, a rotor assembly, a stator shielding sleeve and a rotor shielding sleeve, the pump body is connected with the shield motor through flanges, a lower extensible long shaft of the rotor assembly in the pump body is provided with the impeller, an upper extensible long shaft of the rotor assembly is provided with the auxiliary impeller, a circulating pipe is installed from an outlet flange of the pump body to the back pump cover, and a front bearing block and a back bearing block on two ends of the shield motor are both processed with radial holes. Medium conveyed by the canned motor pump is conveyed to the back pump cover from the outlet flange of the pump body through the circulating pipe, is pressurized by the auxiliary impeller for leading medium to return an outlet of the impeller after cooling and lubricating bearings. Although circulating medium is slightly increased in temperature through the cavity of the motor, the medium is consistently within high-pressure and is prevented from gasifying.
Description
Technical field
The utility model relates to easily the vaporize canned motorpump of medium of the employed conveyings of industry such as a kind of canned motorpump, particularly a kind of petrochemical industry.
Background technique
The employed no-leakage pumps of industry such as present petrochemical industry mostly are shielded electric-pump.The cooling of shield pump bearing, cooling lubricated and motor are to take away by fed sheet of a media, when medium was easily vaporized in conveying, circulating liquid passed through the cooling to bearing, the lubricated cooling that reaches motor, and its temperature can raise, as enter into the pump chamber low pressure area vaporization phenomenon will take place, cause pump to damage.In order to address this problem, the afterbody at pump that has connects an auxiliary piping, and circulating liquid is by behind the motor cavity, because temperature rise is arranged, directly receive the vapour phase district of inlet storage tank, to prevent that vaporization takes place in the pump causes pump to damage, owing to the afterbody from pump is different to the distance of storage tank, the resistance difference, influential to circulating fluid volume, so effect is undesirable, and this structure has also increased expense simultaneously to the trouble that the user has increased auxiliary piping and installation.At existing problem in the above-mentioned prior art, a kind of novel conveying of research and design canned motorpump of medium of easily vaporizing, existing problem is very necessary in the prior art thereby overcome.
Summary of the invention
In view of existing problem in the above-mentioned prior art, the purpose of this utility model is easily the vaporize canned motorpump of medium of a kind of novel conveying of research and design, thereby solving the past connects an auxiliary piping at the afterbody of pump and cools off, because pump is different with the liquid container distance, the resistance difference, influential to circulating fluid volume, cooling effect is poor, and this structure has increased problems such as expense to the trouble that the user has increased auxiliary piping and installation.
Conveying described in the utility model is easily vaporized the canned motorpump of medium by the pump housing, impeller, shield electric machine, rear pump cover with pay an impeller and formed, described shield electric machine is made up of stator module, rotor assembly, stator can, Rotor can, the pump housing is connected through flange with shield electric machine, and the following axis of elongation of rotor assembly is equipped with impeller in the pump housing.The last axis of elongation of described rotor assembly is equipped with pays impeller.The place installs auxiliary piping additional between the rear pump cover at pump housing outlet(discharge) flange.The front-end bearing pedestal and the rear bearing block at described shield electric machine two ends all are processed with radial hole.
Easily the vaporize canned motorpump of medium of conveying described in the utility model, it is a kind of canned motorpump of carrying easy vaporization medium, pair impeller is installed in the pump end of back in the motor shaft rear end, draw a pipeline to rear pump cover from pump housing outlet(discharge) flange, by paying the impeller supercharging, make medium to bearing cooling, lubricated reaching to turning back to impeller outlet after the motor cooling.
Easily the vaporize beneficial effect of canned motorpump of medium of conveying described in the utility model: integral installation compactness, there is not contrary circulation auxiliary piping, design, the mounting cost of contrary circulation auxiliary piping have been saved, the difference of also having avoided losing owing to contrary circulation auxiliary piping is to the influence against circulating load, the operation safety and reliability of pump.
Description of drawings
The utility model has a width of cloth accompanying drawing,
Fig. 1 carries the easily shield pump structure schematic representation of vaporization medium
Among the figure: 1, the pump housing 2, impeller 3, front-end bearing pedestal 4, fore bearing 5, front shaft sleeve 6, stator module 7, rotor assembly 8, stator can 9, Rotor can 10, Circulation pipe 11, rear pump cover 12, pair impeller 13, rear bearing block 14, rear bearing 15, rear axle housing.
Embodiment
Specific embodiment of the utility model as shown in drawings, stator module 6 one ends are connected with the pump housing 1 through flange, the other end is connected with rear bearing block 13, rear pump cover 11.Rotor assembly 7 is arranged on shaft core position in the stator module 6 by front-end bearing pedestal 3 and rear bearing block 13 upper bearing (metal)s, one end dress impeller 2 places in the pump housing 1 chamber, one end is equipped with a pair impeller 12 and places in the rear pump cover 11, introduce a Circulation pipe 10 from the pump housing 1 outlet(discharge) flange, be connected with rear pump cover 11 by this Circulation pipe 10.Be processed with radial hole on front-end bearing pedestal 3 and the rear bearing block 13.
Conveying described in the utility model is easily vaporized a liquid part that the canned motorpump of medium carries from the pump housing 1 suction port, and------------------------radial hole of front-end bearing pedestal 3---pump chamber impeller 2---exports the pump housing 1 and goes out interruption-forming and circulate the slit between fore bearing 4 and the front shaft sleeve 5 slit between stator can 8 and the Rotor can 9 slit between rear bearing 14 and the rear axle housing 15 rear pump cover 11 Circulation pipe 10 pump housing 1 exhaust port to pay impeller 12, bearing is cooled off, lubricated and the motor heat taken away, this part circulating liquid can produce certain temperature rise, but whole circulation refluxes and all circulates in hyperbaric chamber, as long as the pump intake medium has certain device net positive suction head, guarantee that cavitation does not take place pump, circulating liquid just can not produce cavitation, and pump just can be carried easy gasifying medium safely and reliably.
Claims (1)
1. carry the easily canned motorpump of vaporization medium for one kind, formed by the pump housing (1), impeller (2), shield electric machine, rear pump cover (11) and a pair impeller (12), described shield electric machine is made up of stator module (6), rotor assembly (7), stator can (8), Rotor can (9), the pump housing (1) is connected through flange with shield electric machine, and the following axis of elongation of rotor assembly (7) is equipped with impeller (2) in the pump housing (1); The last axis of elongation that it is characterized in that described rotor assembly (7) is equipped with a pair impeller (12); Install Circulation pipe (10) at the pump housing (1) outlet(discharge) flange place additional between the rear pump cover (11); The front-end bearing pedestal (3) and the rear bearing block (13) at described shield electric machine two ends all are processed with radial hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202480718U CN201535275U (en) | 2009-11-13 | 2009-11-13 | Canned motor pump for conveying medium susceptible to gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202480718U CN201535275U (en) | 2009-11-13 | 2009-11-13 | Canned motor pump for conveying medium susceptible to gasification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535275U true CN201535275U (en) | 2010-07-28 |
Family
ID=42535054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202480718U Expired - Fee Related CN201535275U (en) | 2009-11-13 | 2009-11-13 | Canned motor pump for conveying medium susceptible to gasification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535275U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251991A (en) * | 2011-08-19 | 2011-11-23 | 江苏大学 | Axial force balance device and method for shield pump |
| CN103629118A (en) * | 2013-12-10 | 2014-03-12 | 江苏大学 | Vertical pipeline permanent magnet canned motor pump |
| CN106352063A (en) * | 2016-11-17 | 2017-01-25 | 河南黎明重工科技股份有限公司 | Vertical speed reducer with vertical shaft bearing lubricating oil circulating device |
| CN106907328A (en) * | 2016-08-30 | 2017-06-30 | 合肥新沪屏蔽泵有限公司 | One kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump |
-
2009
- 2009-11-13 CN CN2009202480718U patent/CN201535275U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251991A (en) * | 2011-08-19 | 2011-11-23 | 江苏大学 | Axial force balance device and method for shield pump |
| CN102251991B (en) * | 2011-08-19 | 2014-05-28 | 江苏大学 | Axial force balance device and method for shield pump |
| CN103629118A (en) * | 2013-12-10 | 2014-03-12 | 江苏大学 | Vertical pipeline permanent magnet canned motor pump |
| CN103629118B (en) * | 2013-12-10 | 2016-03-02 | 江苏大学 | A kind of riser permanent magnet shield pump |
| CN106907328A (en) * | 2016-08-30 | 2017-06-30 | 合肥新沪屏蔽泵有限公司 | One kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump |
| CN106352063A (en) * | 2016-11-17 | 2017-01-25 | 河南黎明重工科技股份有限公司 | Vertical speed reducer with vertical shaft bearing lubricating oil circulating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20151113 |
|
| EXPY | Termination of patent right or utility model |