CN106907328A - One kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump - Google Patents

One kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump Download PDF

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Publication number
CN106907328A
CN106907328A CN201610784777.0A CN201610784777A CN106907328A CN 106907328 A CN106907328 A CN 106907328A CN 201610784777 A CN201610784777 A CN 201610784777A CN 106907328 A CN106907328 A CN 106907328A
Authority
CN
China
Prior art keywords
pump
melting
medium heat
high temperature
point medium
Prior art date
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.)
Withdrawn
Application number
CN201610784777.0A
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Chinese (zh)
Inventor
韩元平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Xinhu Canned Motor Pump Co Ltd
Original Assignee
Hefei Xinhu Canned Motor Pump Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hefei Xinhu Canned Motor Pump Co Ltd filed Critical Hefei Xinhu Canned Motor Pump Co Ltd
Priority to CN201610784777.0A priority Critical patent/CN106907328A/en
Publication of CN106907328A publication Critical patent/CN106907328A/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0673—Units comprising pumps and their driving means the pump being electrically driven the motor being of the inside-out type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Abstract

The invention provides one kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump, the motor being connected including the pump housing and with the pump housing, the pump housing includes pump intake, pump leading portion outer barrel, pump discharge and pump back segment outer barrel, and the motor includes front-end bearing pedestal, rear bearing block, terminal box, stator module, armature spindle and rotor assembly；The armature spindle is located at the center of motor body, extended in the pump housing outside output end, one side flange of the pump back segment outer barrel is provided with outer circulating tube import, the outer circulating tube that is radially provided with of rear bearing block is exported, outer circulating tube is provided between the outer circulating tube inlet and outlet, axial centre elongated hole is provided with the rotor shaft rear end axle body, the radial direction cross that the rotor shaft rear end axle body is provided with crosses fluid through-hole, and pressurization accessory impeller is arranged on the armature spindle axle body that the cross is crossed at fluid through-hole.Canned motor pump of the present invention efficiently solves complex structure, and number of parts is more, and insulation is inconvenient, difficulty is big, increases cost, and take up room big problem.

Description

One kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump
Technical field
The present invention relates to one kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump.
Background technology
In the prior art, super heat resistant type multi-stage shield pump should be selected when conveying high-melting-point medium using multiple shielded electric-pump. Super heat resistant type multiple shielded electric-pump compared with common multistage pump shielded electric pump, pump body portion, motor, rear bearing block and circulation Pipe needs lag to lead to steam and hot water, it is ensured that interior media is liquid, endless form and common multiple shielded electric-pump phase Seemingly：Liquid enters from pump intake part, and most of liquid discharged by pump discharge part, a small amount of liquid by motor cavity, from tail Portion's circulation pipe returns to entrance.Due to its structural requirement, must be provided with using the working site of super heat resistant type multiple shielded electric-pump The pipe arrangement of conveying insulation steam or hot water, pipe arrangement one end is connected with steam or hot water source interface, and the other end is protected with shielded electric pump Interface is connected on warm chuck.In actual use, based on existing this body structure of shielded electric pump, the limit of field condition is added There is following defect when installing and using in system, pump：1）, horizontal super heat-resisting multi-stage shield pump complex structure, insulation pipe arrangement it is many, seal Junction is more, can influence the performance of pump；2）, because the pump pipe arrangement is more and long, big using space, insulation is inconvenient, and difficulty is big, into This height.
The content of the invention
Answered for the high-melting-point monoblock type pump section super heat resistant type Multistage shielding pump configuration of band insulation construction that prior art is present Miscellaneous, number of parts is more, and insulation is inconvenient, difficulty is big, increases cost, and take up room big problem, and the present invention provides a kind of defeated High-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump is sent, this kind of situation electric pump can be solved with perfection and worked.
The present invention solves technical problem and adopts the following technical scheme that：
The present invention relates to one kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump, including the pump housing and it is connected with the pump housing Motor, the pump housing includes pump intake, pump leading portion outer barrel, pump discharge and pump back segment outer barrel, and first order leaf is provided with the pump housing Wheel group and second level impeller sets；The motor includes front-end bearing pedestal, rear bearing block, terminal box, stator module, armature spindle and rotor Component；The armature spindle is by the fore bearing and the rear bearing located at the center of motor body, the output end of the armature spindle Extend in the pump housing outward, a side flange of the pump back segment outer barrel of the pump housing is provided with outer circulating tube import, after the motor body The outer circulating tube that is radially provided with of bearing block is exported, and is communicated with both between the outer circulating tube import and outer circulating tube outlet Outer circulating tube, is provided with axial centre elongated hole, the radial direction that the rotor shaft rear end axle body is provided with the rotor shaft rear end axle body Cross crosses fluid through-hole.
Preferably, the one end open of the center elongated hole be located at armature spindle rear end face and with the rear bearing block of motor body in Chamber communicates, and the other end is crossed fluid through-hole and connected with the radial direction cross.
Preferably, pressurization accessory impeller is arranged on the armature spindle axle body that the cross is crossed at fluid through-hole.
Preferably, the side flange shaft of the pump leading portion outer barrel of the pump housing is provided with first row air valve.
Preferably, the top side of the rear bearing block of the motor body is provided with second row air valve.
Preferably, the pump leading portion outer barrel, pump discharge and pump back segment are welded as a whole.
Preferably, the terminal box base can be prevented when housing is damaged built with silica gel, and high-temp liquid enters wiring In box, terminal box is protected.
Compared with prior art, the present invention has following beneficial effect：
（1）Conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump of the present invention, by by pump housing outer barrel component and pump Water exit end is welded into an entirety, not only reduces the quantity of sealed faying face, improves the sealing property of pump, and reduces The quantity of insulation jacket, and then reduce the quantity of insulation pipe arrangement.
（2）It is connected with circulation pipe with rear bearing block by pump outer barrel component back segment flange, reduces the length of circulation pipe, Increase accessory impeller at armature spindle rear portion in addition, the two ensure that the flowing of circulation fluid needed for pump is unimpeded.
（3）By setting two air bleeding valves at the high point of pump leading portion outer barrel flange and electric motor back shaft bearing, it is ensured that Gas to that may be piled up in pump work or produce is excluded, it is ensured that the reliability of pump, safe operation.
（4）Canned motor pump of the present invention causes the smooth circulation returned on the outer drum flange of pump back segment of the circulation fluid for cooling down motor Tube inlet, prevents circulatory mediator from gasifying, and control returns to the amount of the circulatory mediator of pump housing impeller low-pressure area, prevents impeller cavitation.
Brief description of the drawings
The detailed description made to non-limiting example with reference to the following drawings by reading, further feature of the invention, Objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump of the present invention；
Fig. 2 is the side view of Fig. 1 of the present invention；
Fig. 3 is rotor assembly rear end part structural representation of the present invention；
Wherein label in figure：1 is pump intake, 2 is pump leading portion outer barrel, 3 is first order impeller sets, 4 is pump discharge, 5 is the second level Impeller sets, 6 be pump back segment outer barrel, 7 be outer circulating tube import, 8 be front-end bearing pedestal, 9 be stator module, 10 be armature spindle, 11 be Rotor assembly, 12 be outer circulating tube outlet, 13 be rear bearing block, 14 be terminal box, 15 be second row air valve, 16 be outer circulation Pipe, 17 be first row air valve, 18 be accessory impeller, 19 be that fluid through-hole, 22 are crossed for cross in elongated hole, 21 centered on accessory impeller cover plate, 20 For rear bearing, 23 are fore bearing.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.These embodiments be merely to illustrate the present invention and without In limitation the scope of the present invention.
As depicted in figs. 1 and 2, a kind of conveying high-melting-point medium heat-preserving type multistage superhigh temperature screen of the preferred embodiment of the present invention Cover pump, including the pump housing and the motor that is connected with the pump housing, the pump housing mainly includes pump intake 1, pump leading portion outer barrel 2, pump discharge 4, after pump Section outer barrel 6, first order impeller sets 3, second level impeller sets 5, is sleeved in the output end of armature spindle 10；It is fixed that motor part mainly includes Sub-component 9, rotor assembly 11 and terminal box 14, the forward and backward two ends of stator module are respectively provided with front-end bearing pedestal 8 and rear bearing block 13, Install fore bearing 22 and rear bearing 23 respectively in axle bearing.Wherein, the side flange of pump back segment outer barrel 6 one is provided with outer following Ring import 7, rear bearing block 13 is radially provided with outer circulation outlet 12, and both are connected by outer circulating tube 16；Pump leading portion outer barrel 2 installs the One air bleeding valve 17；Second row air valve 15 is installed at the top high point of rear bearing block 13.
As shown in figure 3, rotor assembly is axially drilled with center elongated hole 20 in the rear end of armature spindle 10, hole depth reaches secondary The installation site of impeller 18；Accessory impeller 18 is arranged on the rear portion of armature spindle 10, the radial direction cross that the axle body of installation site is provided with Fluid through-hole 21 is crossed, the one end open of center elongated hole 20 is communicated with the rear bearing block inner chamber of motor body, the other end is crossed liquid and led to cross Hole 21 connects；By taking four accessory impellers of impeller as an example, four back blades are laid with the medial surface of accessory impeller 18 in cross Arrangement, the lateral surface of accessory impeller 18 is provided with accessory impeller cover plate 19.
When pump work is shielded, as shown in the direction of arrow in Fig. 1, high-melting-point medium is entered by pump intake, by first Level impeller sets 3, reach at the position of pump back segment outer barrel 6, and wherein most part liquid can be by the front of front-end bearing pedestal 8 and by second Level impeller sets 5（Anti- impeller）, finally arrive at the pump discharge 4 of pump water exit end.Sub-fraction liquid can be shunted at pump back segment outer barrel 6 By outer circulating tube 16, the inner chamber of rear bearing block 13 is arrived at, and by the center elongated hole 20 of axle back segment, near accessory impeller 18 Cross is crossed in fluid through-hole 21 and flowed out, and by the supercharging of accessory impeller 18, flows through space stator assembly and rotor assembly, and from front axle The front of front-end bearing pedestal 8 is flow at the gap for holding 23, then by entering outer circulating tube at outer circulating tube import, so circulation.This Invention reduces outside inverse circulation piping length and insulation pipe arrangement quantity than existing super heat-resisting multi-stage shield pump.
The liquid supercharging that accessory impeller 18 pairs flows through, on the one hand provides circulating liquid power, drives it to be flowed to from accessory impeller At front-end bearing pedestal 8, on the other hand to the increase of fluid pressure so that the liquid when flowing through motor and being cooled down, situation of being heated Under, compared to the more difficult gasification of existing apparatus.
Conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump of the present invention is by by pump housing outer barrel component and pump Water exit end is welded into an entirety, not only reduces the quantity of sealed faying face, improves the sealing property of pump, and reduces The quantity of insulation jacket, and then reduce the quantity of insulation pipe arrangement；Used by pump outer barrel component back segment flange and rear bearing block Circulation pipe is connected, and reduces the length of circulation pipe, increases accessory impeller at armature spindle rear portion in addition, and the two ensure that circulation needed for pump The flowing of liquid is unimpeded；By setting two air bleeding valves at the high point of pump leading portion outer barrel flange and electric motor back shaft bearing, really Protect and the gas that may be piled up in pump work or produce has been excluded, it is ensured that the reliability of pump, safe operation；Institute of the present invention Canned motor pump is stated so that the smooth circulation tube inlet returned on the outer drum flange of pump back segment of the circulation fluid of cooling motor, prevents circulatory mediator Gasification, control returns to the amount of the circulatory mediator of pump housing impeller low-pressure area, prevents impeller cavitation.With preferable application value.
Specific embodiment of the invention is described above.It is to be appreciated that the invention is not limited in above-mentioned Particular implementation, those skilled in the art can within the scope of the claims make various deformations or amendments, this not shadow Sound substance of the invention.

Claims (7)

1. a kind of conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump, including the pump housing and the motor being connected with the pump housing, institute The pump housing is stated including pump intake, pump leading portion outer barrel, pump discharge and pump back segment outer barrel, first order impeller sets and the are provided with the pump housing Sencond stage impeller group；The motor includes front-end bearing pedestal, rear bearing block, terminal box, stator module, armature spindle and rotor assembly；Institute Armature spindle is stated by the fore bearing and the rear bearing located at the center of motor body, pump is extended outside the output end of the armature spindle In vivo, it is characterised in that：One side flange of the pump back segment outer barrel of the pump housing is provided with outer circulating tube import, the motor body The outer circulating tube that is radially provided with of rear bearing block is exported, and both are communicated between the outer circulating tube import and outer circulating tube outlet Outer circulating tube, axial centre elongated hole, the footpath that the rotor shaft rear end axle body is provided with are provided with the rotor shaft rear end axle body Fluid through-hole is crossed to cross.
It is 2. according to claim 1 to convey high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump, it is characterised in that：It is described The one end open of center elongated hole be located at armature spindle rear end face and communicated with the rear bearing block inner chamber of motor body, the other end with it is described Radial direction cross crosses fluid through-hole connection.
It is 3. according to claim 1 to convey high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump, it is characterised in that：It is described Pressurization accessory impeller is arranged on the armature spindle axle body that cross is crossed at fluid through-hole.
It is 4. according to claim 1 to convey high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump, it is characterised in that：It is described The side flange shaft of the pump leading portion outer barrel of the pump housing is provided with first row air valve.
It is 5. according to claim 1 to convey high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump, it is characterised in that：It is described The top side of the rear bearing block of motor body is provided with second row air valve.
It is 6. according to claim 1 to convey high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump, it is characterised in that：It is described Pump leading portion outer barrel, pump discharge and pump back segment are welded as a whole.
It is 7. according to claim 1 to convey high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump, it is characterised in that：It is described Terminal box base is built with silica gel.
CN201610784777.0A 2016-08-30 2016-08-30 One kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump Withdrawn CN106907328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610784777.0A CN106907328A (en) 2016-08-30 2016-08-30 One kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610784777.0A CN106907328A (en) 2016-08-30 2016-08-30 One kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump

Publications (1)

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CN106907328A true CN106907328A (en) 2017-06-30

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CN201610784777.0A Withdrawn CN106907328A (en) 2016-08-30 2016-08-30 One kind conveying high-melting-point medium heat-preserving type multistage ultra-high temperature shielding pump

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4990068A (en) * 1987-03-23 1991-02-05 Zhong Xing X Unique grease lubricated ball bearing canned motor pump
CN2523989Y (en) * 2001-08-03 2002-12-04 沈阳市工业泵厂 Multi-stage centrifugal oil pump with axially middle openings
CN201535275U (en) * 2009-11-13 2010-07-28 大连环友屏蔽泵有限公司 Canned motor pump for conveying medium susceptible to gasification
CN202659519U (en) * 2012-06-25 2013-01-09 合肥新沪屏蔽泵股份有限公司 Internal pressurized multistage shield pump for conveying easily gasifying medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4990068A (en) * 1987-03-23 1991-02-05 Zhong Xing X Unique grease lubricated ball bearing canned motor pump
CN2523989Y (en) * 2001-08-03 2002-12-04 沈阳市工业泵厂 Multi-stage centrifugal oil pump with axially middle openings
CN201535275U (en) * 2009-11-13 2010-07-28 大连环友屏蔽泵有限公司 Canned motor pump for conveying medium susceptible to gasification
CN202659519U (en) * 2012-06-25 2013-01-09 合肥新沪屏蔽泵股份有限公司 Internal pressurized multistage shield pump for conveying easily gasifying medium

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Application publication date: 20170630

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