CN108252924B - Magnetic pump for conveying ultralow-temperature easily-vaporized medium - Google Patents
Magnetic pump for conveying ultralow-temperature easily-vaporized medium Download PDFInfo
- Publication number
- CN108252924B CN108252924B CN201611234492.6A CN201611234492A CN108252924B CN 108252924 B CN108252924 B CN 108252924B CN 201611234492 A CN201611234492 A CN 201611234492A CN 108252924 B CN108252924 B CN 108252924B
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- CN
- China
- Prior art keywords
- sleeve
- bearing
- pump
- hole
- shaft
- 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.)
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Links
- 238000002955 isolation Methods 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 15
- 238000009834 vaporization Methods 0.000 claims description 5
- 230000008016 vaporization Effects 0.000 claims description 5
- 238000009837 dry grinding Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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
- 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
-
- 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
- F04D29/007—Details, component parts, or accessories 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A magnetic pump for conveying ultralow-temperature easily-vaporized medium comprises a pump body, an impeller, a pump shaft, a bearing seat, an intermediate body, a thrust disc assembly, a shaft sleeve, a gear sleeve, a bearing sleeve, an inner magnetic rotor assembly, a separation sleeve, an outer magnetic rotor assembly, a connecting frame, a circulating pipe and a gas-phase balance pipe; the pump shaft is provided with a half through hole, and is communicated with a bearing cavity surrounded by the shaft sleeve, the baffle sleeve and the bearing sleeve through the original through hole. The bearing pedestal is provided with a through hole which is communicated with a bearing cavity surrounded by the circulating pipe, the shaft sleeve, the baffle sleeve and the bearing sleeve. Auxiliary blades are arranged behind the inner magnetic rotor assembly. The isolation sleeve is provided with a connecting hole communicated with the gas phase balance pipe. The magnetic pump of the invention has stable and reliable operation and can be completely used in the field of conveying low-temperature easily-vaporized mediums.
Description
Technical Field
The invention relates to a pump, in particular to a magnetic pump for conveying ultralow-temperature easily-vaporized medium.
Background
At present, the magnetic pump is completely free from leakage and is widely applied to the transportation of various flammable, explosive, toxic, harmful, noble and other liquid media. The working principle of the magnetic pump is that magnetic lines of force of the inner magnetic rotor and the outer magnetic rotor penetrate through an air gap and a non-magnetic isolation sleeve to realize non-contact synchronous transmission of moment, when the magnetic pump operates, magnetic vortex heat is generated in alternating magnetic fields of the inner magnetic rotor and the outer magnetic rotor by the metal isolation sleeve, a conveyed low-temperature easily-vaporizable medium is easy to vaporize, a circulating loop of the pump cannot cool the inner magnetic rotor and the lubricating bearing sleeve, the shaft sleeve and the thrust disc by utilizing the conveyed liquid medium, key parts are finally damaged due to dry grinding, magnetic steel of the inner magnetic rotor is also demagnetized due to liquid lack cooling, and the magnetic pump is used for conveying the low-temperature easily-vaporizable medium and is not generally seen by the use industry.
Disclosure of Invention
The invention aims to solve the problems and provide a magnetic pump for conveying ultralow-temperature easily-vaporized medium.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the magnetic pump for conveying the ultralow-temperature easily-vaporized medium comprises a pump body, an impeller, a pump shaft, a bearing seat, an intermediate body, a thrust disc assembly, a shaft sleeve, a gear sleeve, a bearing sleeve, an inner magnetic rotor assembly, a separation sleeve, an outer magnetic rotor assembly, a connecting frame, a circulating pipe and a gas-phase balance pipe; the pump shaft is provided with a half through hole, and is communicated with a bearing cavity surrounded by the shaft sleeve, the baffle sleeve and the bearing sleeve through the original through hole.
The bearing pedestal is provided with a through hole which is communicated with a bearing cavity surrounded by the circulating pipe, the shaft sleeve, the baffle sleeve and the bearing sleeve.
And auxiliary blades are arranged behind the inner magnetic rotor assembly.
And the isolation sleeve is provided with a connecting hole communicated with the gas phase balance pipe.
The magnetic pump provided by the invention is stable and reliable in operation, the outlet of the magnetic pump guides the circulating pipe to the bearing cavity, the friction pair of the lubricating and cooling shaft sleeve, the bearing sleeve and the thrust disc assembly is formed, the medium passes through the half through hole of the pump shaft, the inner magnetic rotor assembly and the isolation sleeve are pressurized and circulated and cooled under the action of the auxiliary blade, and the pressure of the gas phase cavity balancing system of the storage tank is connected through the external gas phase balancing pipe, so that the stable operation of the magnetic pump is effectively ensured, meanwhile, the phenomenon that liquid shortage is caused by vaporization and lubrication and cooling are avoided, and the magnetic pump can be completely used in the field of conveying low-temperature easily-vaporized medium.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Detailed Description
Referring to fig. 1, the magnetic pump for conveying ultralow-temperature easily-vaporized medium comprises a pump body 1, an impeller 2, a pump shaft 3, a bearing seat 4, an intermediate body 5, a thrust disc assembly 6, a shaft sleeve 7, a gear sleeve 8, a bearing sleeve 9, an inner magnetic rotor assembly 10, a spacer sleeve 11, an outer magnetic rotor assembly 12, a connecting frame 13, a circulating pipe 14 and a gas-phase balance pipe 15; the pump shaft 3 is provided with a half through hole 31 and is communicated with a bearing cavity surrounded by the shaft sleeve, the baffle sleeve and the bearing sleeve through the original through hole 32. The bearing seat 4 is provided with a through hole 41 which is communicated with a bearing cavity surrounded by the circulating pipe, the shaft sleeve, the baffle sleeve and the bearing sleeve. An auxiliary vane 101 is provided behind the inner magnetic rotor assembly 10. The spacer 11 is provided with a coupling hole 111 communicating with the gas phase balance pipe 15.
According to the invention, the circulating pipe 14 is arranged between the pump body 1 and the intermediate body 5, and the magnetic pump can enable conveyed media to enter a bearing cavity formed by surrounding the shaft sleeve 7, the gear sleeve 8 and the bearing sleeve 9 from an outlet high-pressure area of the magnetic pump through the through hole 41 on the bearing seat 4 through the circulating pipe 14, so that the key parts of the magnetic pump, namely the shaft sleeve 7, the bearing sleeve 9 and the thrust disc assembly 6, can be sufficiently lubricated by the conveyed media.
The pump shaft 3 is provided with the half through hole 31, and is communicated with the bearing cavity formed by surrounding the shaft sleeve 7, the baffle sleeve 8 and the bearing sleeve 9 through the original through hole 32, so that high-pressure liquid entering the bearing cavity can be effectively led to a low-pressure area formed by high-speed rotation of the auxiliary blade 101 behind the inner magnetic rotor assembly 10, and the inner magnetic rotor assembly 10 and the isolation sleeve 11 are fully lubricated and cooled under the action of the auxiliary blade 101 along the gap between the inner magnetic rotor assembly 10 and the isolation sleeve 11.
The isolation sleeve 11 is provided with a connecting hole 111 which is communicated with the gas phase balance pipe 15, and the other end of the gas phase balance pipe is connected with the gas phase chamber of the conveyed medium storage tank, so that the system pressure can be maintained stable, and the normal operation of the magnetic pump is ensured.
The invention opens the circulation hole at the pump outlet, opens the hole on the bearing seat, and connects the high pressure liquid at the pump outlet to the bearing chamber through the external circulation pipe, so that the friction pair of the shaft sleeve, the bearing sleeve and the thrust disc assembly can be fully lubricated, thereby playing the role of protecting the friction pair from dry grinding burning caused by vaporization.
The invention utilizes the auxiliary blades to carry out supercharging circulation on the high-pressure liquid flowing through the bearing chamber, so that the internal circulation liquid is in a high-pressure and supercharging state, and the pressure of the internal circulation medium is higher than the saturated vapor pressure without vaporization, thus effectively ensuring that the internal magnetic rotor assembly and the isolation sleeve are fully cooled.
The isolation sleeve flange is provided with a connecting hole, and is externally connected with a gas phase balance pipe which is communicated with a gas phase cavity of a conveyed liquid storage tank, and because the inner magnetic rotor assembly and the outer magnetic rotor assembly rotate at high speed to generate magnetic vortex heat, partial liquid is vaporized after flowing through the isolation sleeve and the inner magnetic rotor inner cavity, and meanwhile, the pressure of the gas phase cavity of the storage tank can be balanced again by the externally connected gas phase balance pipe along with the fact that the vacuum degree of the sealed storage tank liquid is larger and larger, the pressure of the gas phase cavity of the storage tank is effectively ensured to be kept balanced, and the vacuum damage is avoided, so that the pump cavity is protected from being filled with conveyed media and running without load.
Claims (1)
1. A magnetic pump for conveying ultralow-temperature easily-vaporized medium comprises a pump body, an impeller, a pump shaft, a bearing seat, an intermediate body, a thrust disc assembly, a shaft sleeve, a gear sleeve, a bearing sleeve, an inner magnetic rotor assembly, a separation sleeve, an outer magnetic rotor assembly, a connecting frame, a circulating pipe and a gas-phase balance pipe; the method is characterized in that: the pump shaft is provided with a half through hole and is communicated with a bearing cavity surrounded by the shaft sleeve, the baffle sleeve and the bearing sleeve through the original through hole;
the bearing seat is provided with a through hole which is communicated with a bearing cavity formed by the circulating pipe, the shaft sleeve, the baffle sleeve and the bearing sleeve in a surrounding way, an auxiliary blade is arranged at the rear part of the inner magnetic rotor assembly, and the isolation sleeve is provided with a connecting hole which is communicated with the gas phase balance pipe;
a circulating pipe is arranged between the pump body and the intermediate body, and a magnetic pump enters a bearing cavity formed by surrounding a shaft sleeve, a baffle sleeve and a bearing sleeve from an outlet high-pressure area of the magnetic pump through a through hole on a bearing seat through the circulating pipe, so that key parts of the shaft sleeve, the bearing sleeve and a thrust disc assembly of the magnetic pump are fully lubricated by the conveyed medium;
a half through hole is arranged on the pump shaft and is communicated with a bearing cavity formed by surrounding the shaft sleeve, the baffle sleeve and the bearing sleeve through the original through hole, high-pressure liquid entering the bearing cavity is led to a low-pressure area formed by high-speed rotation of an auxiliary blade at the rear of the inner magnetic rotor assembly, and the inner magnetic rotor assembly and the isolation sleeve are lubricated and cooled along a gap between the total isolation sleeves of the inner magnetic rotor under the action of the auxiliary blade;
the connecting hole is arranged on the isolation sleeve and communicated with the gas phase balance pipe, and the other end of the gas phase balance pipe is connected with the gas phase chamber of the conveyed medium storage tank, so that the system pressure is maintained stable, and the normal operation of the magnetic pump is ensured;
the pump outlet is provided with a circulation hole, the bearing seat is provided with a hole, and high-pressure liquid at the pump outlet is communicated to the bearing chamber through an external circulation pipe, so that the friction pair of the shaft sleeve, the bearing sleeve and the thrust disc assembly is fully lubricated, and the friction pair is protected from dry grinding burning caused by vaporization;
the auxiliary blades are used for carrying out pressurization circulation on the high-pressure liquid flowing through the bearing chamber, so that the internal circulation liquid is in a high-pressure and pressurization state, the pressure of an internal circulation medium is ensured to be higher than the saturated vapor pressure without vaporization, and the internal magnetic rotor assembly and the isolation sleeve are ensured to be fully cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234492.6A CN108252924B (en) | 2016-12-28 | 2016-12-28 | Magnetic pump for conveying ultralow-temperature easily-vaporized medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234492.6A CN108252924B (en) | 2016-12-28 | 2016-12-28 | Magnetic pump for conveying ultralow-temperature easily-vaporized medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108252924A CN108252924A (en) | 2018-07-06 |
| CN108252924B true CN108252924B (en) | 2024-04-09 |
Family
ID=62719441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611234492.6A Active CN108252924B (en) | 2016-12-28 | 2016-12-28 | Magnetic pump for conveying ultralow-temperature easily-vaporized medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108252924B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356858B (en) * | 2018-11-29 | 2024-05-14 | 联峰钢铁（张家港）有限公司 | Centrifugal low-temperature liquid pump |
| CN111456944A (en) * | 2020-04-14 | 2020-07-28 | 浙江理工大学 | High-speed low-temperature magnetic pump |
| CN116696782B (en) * | 2023-07-18 | 2024-04-26 | 江苏大学 | Multistage magnetic pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089401A (en) * | 2007-06-27 | 2007-12-19 | 丹东克隆集团有限责任公司 | High performance magnetic pump |
| CN101349290A (en) * | 2008-08-27 | 2009-01-21 | 丹东克隆集团有限责任公司 | External reflux type magnetic pump |
| CN202250896U (en) * | 2011-08-09 | 2012-05-30 | 浙江腾宇泵阀设备有限公司 | High-pressure reverse circulation magnetic pump |
| CN102650295A (en) * | 2012-05-17 | 2012-08-29 | 烟台盛泉泵业有限公司 | Improved magnetic pump |
| CN206338207U (en) * | 2016-12-28 | 2017-07-18 | 上海佰诺泵阀有限公司 | Magnetic drive pump for conveying ultralow temperature easy vaporized medium |
-
2016
- 2016-12-28 CN CN201611234492.6A patent/CN108252924B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089401A (en) * | 2007-06-27 | 2007-12-19 | 丹东克隆集团有限责任公司 | High performance magnetic pump |
| CN101349290A (en) * | 2008-08-27 | 2009-01-21 | 丹东克隆集团有限责任公司 | External reflux type magnetic pump |
| CN202250896U (en) * | 2011-08-09 | 2012-05-30 | 浙江腾宇泵阀设备有限公司 | High-pressure reverse circulation magnetic pump |
| CN102650295A (en) * | 2012-05-17 | 2012-08-29 | 烟台盛泉泵业有限公司 | Improved magnetic pump |
| CN206338207U (en) * | 2016-12-28 | 2017-07-18 | 上海佰诺泵阀有限公司 | Magnetic drive pump for conveying ultralow temperature easy vaporized medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108252924A (en) | 2018-07-06 |
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