CN108252923B - High-temperature high-pressure magnetic pump for nuclear industry - Google Patents
High-temperature high-pressure magnetic pump for nuclear industry Download PDFInfo
- Publication number
- CN108252923B CN108252923B CN201611234118.6A CN201611234118A CN108252923B CN 108252923 B CN108252923 B CN 108252923B CN 201611234118 A CN201611234118 A CN 201611234118A CN 108252923 B CN108252923 B CN 108252923B
- Authority
- CN
- China
- Prior art keywords
- pump
- sleeve
- pressure
- rotor assembly
- magnetic rotor
- 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.)
- Active
Links
- 238000002955 isolation Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 230000017525 heat dissipation Effects 0.000 claims abstract description 4
- 125000006850 spacer group Chemical group 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 2
- 238000005242 forging Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
- F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials 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
- F04D29/046—Bearings
- F04D29/0462—Bearing cartridges
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A high-temperature high-pressure magnetic pump for nuclear industry comprises a pump body, an impeller, a pump shaft, a bearing seat, a spacer sleeve, a sealing gasket, a thrust disc assembly, a bearing sleeve, a gear sleeve, a shaft sleeve, an inner magnetic rotor assembly, an outer magnetic rotor assembly, a connecting frame, a bearing box assembly and a motor; the bearing seat is arranged on the isolation sleeve, and the bearing seat is provided with a low-pressure backflow hole and a high-pressure circulation hole. The inner magnetic rotor assembly is provided with a rib sheet. And the outer magnetic rotor assembly is provided with radiating blades. The bearing box assembly is covered with a jacket to form a cooling chamber. The invention has the advantages of simple structure, safety, reliability, full internal circulation, full heat dissipation, simple operation and the like. Can be used in the environment where the nuclear industry system needs high temperature and high pressure.
Description
Technical Field
The invention relates to a pump, in particular to a high-temperature high-pressure magnetic pump for nuclear industry.
Background
At present, the high-temperature high-pressure magnetic pump has a complex structure, spare parts and messy internal and external circulation loops, so that the operation requirement of the pump is harsh, and equipment faults are easily caused by improper operation.
The magnetic pump has a pump cavity formed by the pump body and the pump cover, an inner magnetic rotor cavity formed by the pump cover and the isolating sleeve, and sealing gaskets arranged between the pump body and the pump cover and between the pump cover and the isolating sleeve, and at least two static seals for preventing the leakage of the liquid medium to be conveyed, and a plurality of static seals for greatly reducing the safety coefficient of the pump.
The isolating sleeve is a key component of the magnetic pump, and the inner magnetic rotor and the outer magnetic rotor transmit magnetic torque through magnetic lines of force passing through the isolating sleeve. When the magnetic pump operates, the metal isolation sleeve generates magnetic vortex heat, the gap between the inner magnetic rotor and the outer magnetic rotor has great influence on the transmission efficiency of magnetic torque, and the isolation sleeve is usually formed by welding 304, 316 or hastelloy and other materials, so that the requirements of high temperature and high pressure below 300 ℃ and 15MPa can be met.
Disclosure of Invention
The invention aims to solve the problems and provides a high-temperature high-pressure magnetic pump for nuclear industry.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a high-temperature high-pressure magnetic pump for nuclear industry comprises a pump body, an impeller, a pump shaft, a bearing seat, a spacer sleeve, a sealing gasket, a thrust disc assembly, a bearing sleeve, a gear sleeve, a shaft sleeve, an inner magnetic rotor assembly, an outer magnetic rotor assembly, a connecting frame, a bearing box assembly and a motor; the bearing seat is arranged on the isolation sleeve and is provided with a low-pressure backflow hole and a high-pressure circulation hole.
And the inner magnetic rotor assembly is provided with a rib sheet.
And the outer magnetic rotor assembly is provided with radiating blades.
And the bearing box assembly is covered with a jacket to form a cooling chamber.
The isolating sleeve is directly connected with the pump body, and the pump body is not provided with a pump cover.
The isolation sleeve is manufactured by a titanium alloy TC4 forge piece.
Due to the adoption of the technical scheme, the invention has the following advantages and characteristics:
1. Simple structure, safe and reliable: the isolating sleeve is directly connected with the pump body to form an inner cavity of the pump, and the whole pump is provided with only one sealing gasket, so that other redundant parts are reduced, and the safety coefficient of the pump is greatly improved.
2. The internal circulation is sufficient: the bearing seat is provided with a low-pressure backflow hole and a high-pressure circulation hole, the inner magnetic rotor assembly is provided with a rib, and the structure can enable the magnetic pump to take away heat generated during pump operation through the inner circulation of an inner medium, so that the safety and reliability of the high-temperature high-pressure magnetic pump are improved.
3. And the heat dissipation is sufficient: the outer magnetic rotor assembly is provided with the radiating blades, so that the temperature of the outer magnetic steel and the temperature of the isolating sleeve can be effectively reduced, the running stability of the high-temperature high-pressure magnetic pump is improved, the jacket is coated on the periphery of the bearing box assembly to form a cooling chamber, and heat can be effectively prevented from being transferred to the direction of the motor.
4. The operation is simple and convenient: the invention greatly simplifies the design of the high-temperature high-pressure magnetic pump, and the magnetic pump can be started to operate according to the conventional magnetic pump operation rules, thereby reducing various complicated operations such as starting external circulation, detecting and the like.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Detailed Description
Referring to fig. 1, the high-temperature high-pressure magnetic pump for the nuclear industry of the invention comprises a pump body 1, an impeller 2, a pump shaft 3, a bearing seat 4, a spacer bush 5, a sealing gasket 6, a thrust disc assembly 7, a bearing bush 8, a gear bush 9, a shaft sleeve 10, an inner magnetic rotor assembly 11, an outer magnetic rotor assembly 12, a connecting frame 13, a bearing box assembly 14 and a motor 15; the bearing seat 4 is arranged on the isolation sleeve 5, and the bearing seat 4 is provided with a low-pressure backflow hole 41 and a high-pressure circulation hole 42. The rib 111 on the inner magnetic rotor assembly 11 effectively forms an internal heat dissipation circulation loop of the magnetic pump, and can bring in magnetic eddy current heat generated when the magnetic pump operates. The inner magnetic rotor assembly 11 is provided with a rib 111. The outer magnetic rotor assembly 12 is provided with heat radiating fins 121. The temperature of the outer magnetic steel can be effectively reduced; the bearing housing 14 is covered with a jacket to form a cooling chamber 141, and a cooling medium is introduced into the cooling chamber 141 to prevent the temperature of the pump head from being transmitted to the motor 15.
The isolating sleeve 5 is directly connected with the pump body 1, and the pump body is not provided with a pump cover. The static gasket is also reduced from the previous 2 or several to only one gasket 6.
The isolation sleeve is manufactured by a titanium alloy TC4 forge piece. The high-temperature high-strength high-resistivity high-temperature high-power pump has the advantages that the magnetic vortex heat generated by the pump in operation is small, and the efficiency of the unit is high.
The invention simplifies the structural design of the pump head, the isolation sleeve 5 directly surrounds the pump body 1 into the inner cavity of the pump, and the whole pump has only one static sealing gasket 6, so that the safety coefficient of the pump is greatly improved.
The invention omits the traditional pump cover and the bearing body, skillfully designs that the independent bearing seat 4 is arranged on the flange of the isolation sleeve 5, and can effectively support the rotor assembly in the pump.
The bearing seat 4 is provided with a low-pressure backflow hole 41 and a high-pressure circulation hole 42, the inner magnetic rotor assembly 11 is provided with a rib 111, when the high-temperature high-pressure magnetic pump operates, liquid medium enters an inner magnetic rotor cavity formed by the bearing seat 4 and the isolation sleeve 5 in a surrounding manner from the high-pressure part of the vortex chamber through the high-pressure circulation hole 42, and under the action of the rib 111 of the inner magnetic rotor assembly 11, the liquid medium flows back to the low-pressure backflow hole 41 along the gap between the inner magnetic rotor assembly 11 and the isolation sleeve 5 in an accelerating manner, and is carried out of the pump body by the back vane of the impeller 2 after passing through the low-pressure backflow hole 41.
The isolation sleeve 5 is made of titanium alloy TC4 forgings, the material has higher mechanical strength and higher resistivity at high temperature, the isolation sleeve 5 generates smaller magnetic eddy current heat in an alternating magnetic field when the pump is in normal operation, the heat radiating blades 121 on the outer magnetic rotor assembly 12 can cool the outer magnetic steel and the isolation sleeve in an air cooling mode, the influence of the magnetism of the outer magnetic steel on the temperature is reduced, the high-temperature operation reliability of the magnetic pump is improved, cooling substances are introduced into a cooling chamber 141 formed by an outer coating jacket of the bearing box assembly 14, and the high temperature at the front end of the pump is not transmitted to the direction of the motor 15, so that the stable operation of the pump is determined.
Claims (1)
1. A high-temperature high-pressure magnetic pump for nuclear industry comprises a pump body, an impeller, a pump shaft, a bearing seat, a spacer sleeve, a sealing gasket, a thrust disc assembly, a bearing sleeve, a gear sleeve, a shaft sleeve, an inner magnetic rotor assembly, an outer magnetic rotor assembly, a connecting frame, a bearing box assembly and a motor; the method is characterized in that: the bearing seat is arranged on the isolation sleeve, a low-pressure backflow hole and a high-pressure circulation hole are arranged on the bearing seat, an internal heat dissipation circulation loop of the magnetic pump is effectively formed by the bearing seat and the rib sheet on the inner magnetic rotor assembly, and magnetic eddy current heat generated during operation of the magnetic pump can be taken away;
the inner magnetic rotor assembly is provided with a rib sheet, the outer magnetic rotor assembly is provided with a radiating blade,
The bearing box assembly is covered with a jacket to form a cooling chamber, and a cooling medium is introduced into the cooling chamber to prevent the temperature at the front end of the pump from being transferred to the direction of the motor;
the isolation sleeve is manufactured by a titanium alloy TC4 forging;
The isolating sleeve is directly connected with the pump body, the pump body is not provided with a pump cover, and the isolating sleeve and the pump body directly encircle to form an inner cavity of the pump;
the bearing seat is arranged on the isolation sleeve flange and can effectively support the rotor assembly inside the pump;
When the high-temperature high-pressure magnetic pump operates, liquid medium enters an inner magnetic rotor cavity formed by surrounding a bearing seat and an isolation sleeve from a high-pressure position of a volute chamber through a high-pressure circulating hole, and under the action of a rib of an inner magnetic rotor assembly, the liquid medium circulates in an accelerating mode along a gap between the inner magnetic rotor assembly and the isolation sleeve to flow back to a low-pressure backflow hole, and is taken out of a pump body by an impeller after passing through the low-pressure backflow hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234118.6A CN108252923B (en) | 2016-12-28 | 2016-12-28 | High-temperature high-pressure magnetic pump for nuclear industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234118.6A CN108252923B (en) | 2016-12-28 | 2016-12-28 | High-temperature high-pressure magnetic pump for nuclear industry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108252923A CN108252923A (en) | 2018-07-06 |
| CN108252923B true CN108252923B (en) | 2024-05-03 |
Family
ID=62720150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611234118.6A Active CN108252923B (en) | 2016-12-28 | 2016-12-28 | High-temperature high-pressure magnetic pump for nuclear industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108252923B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483421A (en) * | 2020-10-21 | 2021-03-12 | 江苏大学镇江流体工程装备技术研究院 | Magnetic pump with punching-welding formed pump body and impeller |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2769570Y (en) * | 2004-12-30 | 2006-04-05 | 泰兴市化工泵阀厂 | Linear NEOFLON FEP resin high-temperature resisting magnetive driving pump |
| CN101225828A (en) * | 2008-01-21 | 2008-07-23 | 蔡国华 | Separation sleeve for magnetic pump or shield pump |
| CN201321989Y (en) * | 2008-12-12 | 2009-10-07 | 上海凯泉泵业（集团）有限公司 | High pressure resistant, wearable and corrosion resistant high temperature pump |
| CN104279166A (en) * | 2013-07-10 | 2015-01-14 | 上海佰诺泵阀有限公司 | Stainless steel magnetic force driving pump |
| CN204961408U (en) * | 2015-08-13 | 2016-01-13 | 湖南耐普泵业股份有限公司 | High temperature magnetic drive pump cooling structure and magnetic drive pump thereof |
| CN206338204U (en) * | 2016-12-28 | 2017-07-18 | 上海佰诺泵阀有限公司 | High-temperature and high-pressure magnetic pump for nuclear industry |
-
2016
- 2016-12-28 CN CN201611234118.6A patent/CN108252923B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2769570Y (en) * | 2004-12-30 | 2006-04-05 | 泰兴市化工泵阀厂 | Linear NEOFLON FEP resin high-temperature resisting magnetive driving pump |
| CN101225828A (en) * | 2008-01-21 | 2008-07-23 | 蔡国华 | Separation sleeve for magnetic pump or shield pump |
| CN201321989Y (en) * | 2008-12-12 | 2009-10-07 | 上海凯泉泵业（集团）有限公司 | High pressure resistant, wearable and corrosion resistant high temperature pump |
| CN104279166A (en) * | 2013-07-10 | 2015-01-14 | 上海佰诺泵阀有限公司 | Stainless steel magnetic force driving pump |
| CN204961408U (en) * | 2015-08-13 | 2016-01-13 | 湖南耐普泵业股份有限公司 | High temperature magnetic drive pump cooling structure and magnetic drive pump thereof |
| CN206338204U (en) * | 2016-12-28 | 2017-07-18 | 上海佰诺泵阀有限公司 | High-temperature and high-pressure magnetic pump for nuclear industry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108252923A (en) | 2018-07-06 |
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