CN102518589B - Leakless high-temperature hot oil medium delivery pump - Google Patents
Leakless high-temperature hot oil medium delivery pump Download PDFInfo
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- CN102518589B CN102518589B CN201210006564.7A CN201210006564A CN102518589B CN 102518589 B CN102518589 B CN 102518589B CN 201210006564 A CN201210006564 A CN 201210006564A CN 102518589 B CN102518589 B CN 102518589B
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Abstract
The invention discloses a kind of Leakless high-temperature hot oil medium delivery pump, it is characterized in that adopting electromagnetic machine, the housing of described electromagnetic machine is closed by motor afterbody end cap at afterbody, is closed by pump cover at axle stretch end, and the inner chamber of described electromagnetic machine and the inner chamber of the pump housing form communicated cavity; Main shaft is enclosed in described communicated cavity; The staor winding of described electromagnetic machine and rotor windings are immersed in cold oil liquid, and the pressure of the pressure ratio pumping high-temperature hot oil medium of described cold oil liquid exceeds 0.05MPa-0.2Mpa.Operationally, hot oil medium can not toward external leakage for Leakless high-temperature hot oil medium delivery pump of the present invention.The present invention, without the need to using shaft seal, completely eliminates pump and operationally occurs the possibility that high-temperature hot oil medium leaks.
Description
Technical field
The present invention relates to a kind of high-temperature hot oil medium transport pump, is more particularly a kind of circular-pump of the conveying high temperature oil based media that can be widely used in the industry such as oil, chemical industry.
Background technique
High-temperature hot oil medium transport pump is widely used in oil, chemical industry, for carrying the inflammable and explosive medium of high temperature, once occur to leak, possible initiation fire.At present, the motor of high-temperature hot oil medium transport pump is all use conventional threephase asynchronous, and pump shaft from pump chamber, protrude through coupling and motor shaft connects, and therefore needs to use gland seal device to leak to prevent hot oil medium.Gland seal device adopts mechanical seal substantially, but the mechanical sealing parts of high-temperature hot oil medium transport pump bears high temperature for a long time, and cause its life-span shorter, need periodic maintenance to change, maintenance cost is higher; Moreover the seal ring of mechanical seal easily produces distortion and hot crack in the case of a high temperature, and elastic compensation element can lose bullet in the case of a high temperature and lose compensation ability, these all can cause mechanical seal catastrophic failure, thus occur that hot oil medium is toward external leakage, affects the safe operation of high-temperature hot oil medium transport pump.It is the main cause causing high-temperature hot oil medium transport failure of pump that gland seal device leaks.
Summary of the invention
The present invention is the deficiency for avoiding existing for above-mentioned prior art, providing a kind of without the need to using the Leakless high-temperature hot oil medium delivery pump of shaft seal, completely eliminating pump and operationally occurring the possibility that high-temperature hot oil medium leaks.
The present invention is that technical solution problem adopts following technological scheme:
The structural feature of Leakless high-temperature hot oil medium delivery pump of the present invention adopts electromagnetic machine, and the housing of described electromagnetic machine is closed by motor afterbody end cap at afterbody, is closed by pump cover at axle stretch end, and the inner chamber of described electromagnetic machine and the inner chamber of the pump housing form communicated cavity; Main shaft is enclosed in described communicated cavity; The staor winding of described electromagnetic machine and rotor windings are immersed in cold oil liquid, and the pressure of the pressure ratio pumping high-temperature hot oil medium of described cold oil liquid exceeds 0.05MPa-0.2Mpa.
The structural feature of Leakless high-temperature hot oil medium delivery pump of the present invention is also:
At the afterbody of described main shaft, the auxiliary impeller rotated with main shaft is set; The differential pressure tank of described auxiliary impeller and outer installment, heat exchanger and filter form the closed circulation system of cold oil liquid.
Between the housing and the pump cover of the described pump housing of described electromagnetic machine, float ring seal is set.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention adopts electromagnetic machine, the inner chamber of electromagnetic machine and the inner chamber of the pump housing form communicated cavity, and main shaft is enclosed in communicated cavity, without extension, therefore without the need to using shaft seal, completely solving current high-temperature hot oil medium transport pump and occurring the problem of hot oil medium toward external leakage because of bearing sealing failure.
2, the present invention is full of the cold oil liquid of pressure a little higher than pumping high-temperature hot oil pressure medium in the inner chamber of electromagnetic machine, float ring seal is arranged between electromagnetic machine and the pump housing, the pressure medium of cold and hot oil is made substantially to reach state of equilibrium, hot oil medium can not only be stoped to leak in motor cavity and to damage motor, also more efficiently prevent cold oil liquid inflow pump intracoelomic cavity simultaneously, reduce the consumption of cold oil liquid.
3, the present invention arranges auxiliary impeller on main shaft, and the cold oil liquid in electromagnetic machine inner chamber relies on the power of auxiliary impeller to realize the pump circulation of cold oil liquid, and good cooling results, ensure that the reliably working of motor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Number in the figure: FOI system repairing mouth; LOI cold oil liquid entrance; LOO cold oil liquid exports; CWI cooling water intake; CWO coolant outlet; 1 pump housing; 2 impellers; 3 pump covers; 4 sealed float rings; 5 springs; 6 electromagnetic machines; 7 staor winding; 8 rotor windings; 9 main shafts; 10 auxiliary impellers; 11 differential pressure tanks; 12 heat exchangers; 13 filters; 14 fluid lubricated bearings; 15 thrust discs.
Embodiment
See Fig. 1, in the present embodiment, the structural feature of Leakless high-temperature hot oil medium delivery pump adopts electromagnetic machine 6, the housing of electromagnetic machine 6 is closed by motor afterbody end cap at afterbody, is closed by pump cover 3 at axle stretch end, and the inner chamber of electromagnetic machine 6 and the inner chamber of the pump housing 1 form communicated cavity; Main shaft 9 is enclosed in communicated cavity; The staor winding 7 of electromagnetic machine 6 and rotor windings 8 are immersed in cold oil liquid, and the pressure of the pressure ratio pumping high-temperature hot oil medium of cold oil liquid exceeds 0.05MPa-0.2Mpa.
At the afterbody of main shaft 9, the auxiliary impeller 10 rotated with main shaft 9 is set; The differential pressure tank 11 of impeller 10 and outer installment, heat exchanger 12 and filter 13 is assisted to form the closed circulation system of cold oil liquid.
At the afterbody of main shaft 9, the auxiliary impeller 10 rotated with main shaft 9 is set; The differential pressure tank 11 of impeller 10 and outer installment, heat exchanger 12 and filter 13 is assisted to form the enclosed forced circulation system of cold oil liquid; Between the housing and the pump cover 3 of the pump housing 1 of electromagnetic machine 6, arrange float ring seal 4, the end face of float ring seal 4 relies on the elastic force of spring 5, keeps in touch all the time with pump cover 3.
High-temperature hot oil medium transport pump before runtime, cold oil liquid is full of in the chamber of electromagnetic machine 6 by system repairing mouth FOI, cold oil fluid pressure is than pumping high-temperature hot oil pressure medium height 0.05MPa-0.2Mpa, and this pressure reduction is to ensure in the chamber that under any circumstance pumping high-temperature hot oil medium all can not leak into electromagnetic machine 6 and to damage staor winding 7 and rotor windings 8.High-temperature hot oil medium pump is when normally running, cold oil liquid in electromagnetic machine 6 chamber promotes energy by the auxiliary impeller 10 rotated with main shaft 9, differential pressure tank 11 epicoele is entered via cold oil liquid outlet LOO, flow through heat exchanger 12 and filter 13 again to carry out fluid cooling and filter, finally enter electromagnetic machine 6 by cold oil liquid-inlet LOI, complete the pump circulation of self, to take away the heat that electromagnetic machine 6 self produces, guarantee that cold oil fluid temperature in electromagnetic machine 6 chamber is within allowed band, wherein the cavity of resorption of differential pressure tank 11 is connected with pump chamber, its Main Function makes in electromagnetic machine 6 chamber all the time and maintains stable pressure reduction in pumping high-temperature hot oil media cavity, float ring seal 4 is provided with between electromagnetic machine 6 and the pump housing 1, when main shaft 9 rotates, because the radial disbalance of float ring seal 4 produces hydrodynamic effect, thus realize sealing effect, to stop cold oil liquid to flow into pumping high-temperature hot oil side medium as far as possible, reduce the consumption of cold oil medium, once occur that cold oil is liquid-consumed to a certain amount of, supplement cold oil liquid by system repairing mouth FOI in time.In addition, in high-temperature hot oil medium transport pump operation process, cooling water divides two-way by cooling water intake CWI, one road inflow heat exchanger 12 carries out heat exchange, take away the heat produced at the cold oil liquid of electromagnetic machine 6 Inner eycle, another road flows in the cooling chamber of pump cover 3 carries out heat exchange, plays heat-blocking action, isolation hot oil medium, to the heat transfer of cold oil liquid, is finally all flowed out by coolant outlet CWO.
High-temperature hot oil medium transport pump structurally also configures fluid lubricated bearing 14 and thrust disc 15, and fluid lubricated bearing 14 relies on cold oil liquid to lubricate, and carrys out supports main shaft 9, bears radial load; Operationally, most axial force can be balanced by the equalizing orifice opened on impeller 2 or Equilibrator high-temperature hot oil medium transport pump, and residual axial force is born by thrust disc 15.
Claims (1)
1. a Leakless high-temperature hot oil medium delivery pump, it is characterized in that adopting electromagnetic machine (6), the housing of described electromagnetic machine (6) is closed by motor afterbody end cap at afterbody, closed by pump cover (3) at axle stretch end, the inner chamber of described electromagnetic machine (6) and the inner chamber of the pump housing (1) form communicated cavity; Main shaft (9) is enclosed in described communicated cavity; Staor winding (7) and the rotor windings (8) of described electromagnetic machine (6) are immersed in cold oil liquid, and the pressure of the pressure ratio pumping high-temperature hot oil medium of described cold oil liquid exceeds 0.05MPa-0.2MPa;
The afterbody of described main shaft (9) arranges the auxiliary impeller (10) rotated with main shaft (9); The differential pressure tank (11) of described auxiliary impeller (10) and outer installment, heat exchanger (12) and filter (13) form the closed circulation system of cold oil liquid;
In high-temperature hot oil medium transport pump operation process, cooling water divides two-way by cooling water intake CWI, and a road inflow heat exchanger (12) carries out heat exchange, and another road flows in the cooling chamber of pump cover (3) carries out heat exchange;
Between the housing and the pump cover (3) of the described pump housing (1) of described electromagnetic machine (6), float ring seal (4) is set;
At described high-temperature hot oil medium transport pump before runtime, cold oil liquid is full of in the chamber of electromagnetic machine (6) by system repairing mouth, cold oil fluid pressure than pumping high-temperature hot oil pressure medium height 0.05MPa-0.2Mpa, to ensure in the chamber that pumping high-temperature hot oil medium all can not leak into electromagnetic machine (6) and to damage staor winding (7) and rotor windings (8); The cavity of resorption of described differential pressure tank (11) is connected with pump chamber, makes in electromagnetic machine (6) chamber and maintains stable pressure reduction in pumping high-temperature hot oil media cavity; Occur that cold oil is liquid-consumed to time a certain amount of, immediately supplement cold oil liquid by system repairing mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210006564.7A CN102518589B (en) | 2012-01-10 | 2012-01-10 | Leakless high-temperature hot oil medium delivery pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210006564.7A CN102518589B (en) | 2012-01-10 | 2012-01-10 | Leakless high-temperature hot oil medium delivery pump |
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| Publication Number | Publication Date |
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| CN102518589A CN102518589A (en) | 2012-06-27 |
| CN102518589B true CN102518589B (en) | 2015-09-16 |
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| CN201210006564.7A Active CN102518589B (en) | 2012-01-10 | 2012-01-10 | Leakless high-temperature hot oil medium delivery pump |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533022B (en) * | 2016-12-29 | 2023-05-30 | 山东颜山泵业有限公司 | Horizontal explosion-proof motor for high-temperature leak-free pump |
| WO2019080139A1 (en) * | 2017-10-29 | 2019-05-02 | 张拥军 | Sealed centrifugal pump with high temperature resistance |
| CN108224776B (en) * | 2018-03-06 | 2024-03-19 | 哈尔滨千安庆防爆电热电气有限公司 | Conduction oil electric heater |
| CN108488074A (en) * | 2018-05-31 | 2018-09-04 | 合肥华升泵阀股份有限公司 | A kind of high lift two-stage Full-lining oil slurry pump of large high-temperature |
| CN108869323A (en) * | 2018-07-03 | 2018-11-23 | 江苏创进泵阀制造有限公司 | A kind of air-cooled circulating high-efficient self-priming pump of slurry No leakage anti-clogging |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB743779A (en) * | 1952-03-22 | 1956-01-25 | Mcgraw Electric Co | Improvements in electric motor pump unit |
| CN1439811A (en) * | 2002-10-15 | 2003-09-03 | 甘肃工业大学 | Axial-flow air oil mixed transfer pump and control system thereof |
| CN201650760U (en) * | 2010-01-29 | 2010-11-24 | 大连海密梯克泵业有限公司 | Shield pump for heat transfer oil |
| CN101994703A (en) * | 2009-08-18 | 2011-03-30 | 上海熊猫机械(集团)有限公司 | High temperature hot water pump |
-
2012
- 2012-01-10 CN CN201210006564.7A patent/CN102518589B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB743779A (en) * | 1952-03-22 | 1956-01-25 | Mcgraw Electric Co | Improvements in electric motor pump unit |
| CN1439811A (en) * | 2002-10-15 | 2003-09-03 | 甘肃工业大学 | Axial-flow air oil mixed transfer pump and control system thereof |
| CN101994703A (en) * | 2009-08-18 | 2011-03-30 | 上海熊猫机械(集团)有限公司 | High temperature hot water pump |
| CN201650760U (en) * | 2010-01-29 | 2010-11-24 | 大连海密梯克泵业有限公司 | Shield pump for heat transfer oil |
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| CN102518589A (en) | 2012-06-27 |
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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee before: HEFEI GENERAL MACHINERY Research Institute |
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