CN114087204A - Low-pressure anti-condensation self-lubricating molten salt pump - Google Patents
Low-pressure anti-condensation self-lubricating molten salt pump Download PDFInfo
- Publication number
- CN114087204A CN114087204A CN202111437493.1A CN202111437493A CN114087204A CN 114087204 A CN114087204 A CN 114087204A CN 202111437493 A CN202111437493 A CN 202111437493A CN 114087204 A CN114087204 A CN 114087204A
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- pump
- molten salt
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- electrode
- lubricating
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- 150000003839 salts Chemical class 0.000 title claims abstract description 74
- 238000009833 condensation Methods 0.000 title claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000000523 sample Substances 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 238000007710 freezing Methods 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 125000000623 heterocyclic group Chemical group 0.000 claims description 3
- 235000021317 phosphate Nutrition 0.000 claims description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 150000004760 silicates Chemical class 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 230000010100 anticoagulation Effects 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000004146 energy storage Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
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
- 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
- F04D29/06—Lubrication
- F04D29/061—Lubrication 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
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
Abstract
A low-voltage anti-coagulation self-lubricating molten salt pump comprises a pump body, an insulating coating, a pump wheel, a first electrode, a second electrode, a pump shaft, a cable, a low-voltage power supply and a temperature sensor; insulating coatings are arranged on the surfaces of the pump body, the pump wheel and the pump shaft; a first electrode and a second electrode are respectively arranged at two ends of the pump body, and the first electrode and the second electrode are respectively connected with a low-voltage power supply through cables to form a low-voltage insulating heating loop; the temperature sensor probe is arranged in the pump body, and the low-voltage power supply directly controls the pump body to heat according to the temperature sensor signal. The low-pressure anti-condensation self-lubricating molten salt pump provided by the invention has the advantages of simple structure, safety, reliability, convenience and high efficiency, and can preheat the pump in advance and prevent molten salt from being retained and solidified in a pump door to block the molten salt pump in the processes of starting, running, stopping and overhauling the molten salt system.
Description
Technical Field
The invention relates to the field of fused salt energy storage heat utilization, in particular to a low-pressure anti-condensation self-lubricating fused salt pump.
Background
The fused salt energy storage technology is one of effective means for adjusting source load fluctuation mismatching, particularly, in the aspect of adjusting consumption of renewable energy sources, the fused salt is used for absorbing energy of the renewable energy sources in the trough period of load demands, and the stored high-temperature fused salt energy is released in the peak period of the load demands, so that imbalance of user loads and energy supply sides is effectively adjusted, and the fused salt energy storage technology has a wide market prospect.
The molten salt pump is a power source for providing fluid motion for the circulation of the molten salt energy storage system, is one of core equipment for safe temperature operation of the molten salt energy storage system, and is mainly used for controlling parameters such as flow, pressure and the like in the process of conveying molten salt by a system pipeline. The fused salt as a high-temperature heat transfer and storage medium has the advantages of high working temperature, high specific heat, high heat transfer capacity and the like, but the fused salt has higher melting point, and the freezing point of the low-melting-point fused salt is preferably about 100 ℃. The problem that the molten salt residue and the coagulation blockage in the molten salt are prevented in order to ensure the operation safety of the whole life cycle of the molten salt system, especially in the starting, the molten salt recovery, the shutdown and the maintenance work of the molten salt system is particularly concerned about and solved.
Chinese patent "a spiral rising type high-efficiency molten salt pump" (CN 110159540A), Chinese patent "a long shaft molten salt pump" (CN 109798247A) and Chinese patent "a vertical molten salt pump" (CN 107237760A) disclose high-temperature molten salt pumps suitable for molten salt respectively; the Chinese patent 'high-temperature molten salt pump' (CN 112096615A), the Chinese patent 'a high-temperature long-shaft molten salt pump' (CN 109139485A), the Chinese patent 'a high-temperature molten salt pump with a double-outlet double-volute pump body' (CN 108626130A), the Chinese patent 'high-temperature molten salt pump' (CN 107559210A), the Chinese patent 'a composite heat-dissipation high-temperature molten salt pump' (CN 103206384A), the Chinese patent 'solar thermal power generation high-temperature long-shaft molten salt pump' (CN 107355389A) and the Chinese patent 'a magnetic suspension bearing supported high-temperature shielding molten salt pump' (CN 113202780A) respectively disclose a molten salt pump suitable for high-temperature molten salt. For a molten salt high-temperature fluid system, uncertain factors exist in the installation and operation processes, the molten salt pump is remained or even solidified under the conditions of system halt, pump local temperature reduction and the like, and the molten salt pump is damaged and cannot normally operate.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a low-pressure anti-condensation self-lubricating molten salt pump which is suitable for the fields of molten salt energy storage heat utilization and the like, so as to solve the problems that the fluid medium of a molten salt system is remained and crystallized in the pump to cause blockage and influence the safe operation of the molten salt system.
The technical scheme of the invention is as follows:
the utility model provides a low pressure prevents congealing self-lubricating molten salt pump which characterized in that: comprises at least 1 pump shell, at least 1 power component and at least 1 driving component; the pump shell is connected with the driving part through the power part, the driving part drives the power part to move under the action of electric power, the movement of the power part drives the movement of fluid, and the fluid moves in a space formed by the pump shell and the power part;
the contact surface of the pump shell and the fluid and the contact part of the pump shell and other parts are coated with insulating layers; at least 1 temperature sensor is arranged in the pump shell; electrodes are arranged at two ends of the pump shell, a low-voltage power supply is added between the electrodes at the two ends, the pump shell is used as a conductor with a resistor to generate heat under the action of low-voltage electricity, and the generated heat can play a role in preventing the molten salt pump from being condensed or preheating; the magnitude of the low voltage applied between the electrodes at the two ends of the pump shell is obtained by analyzing and calculating the feedback parameters of a temperature sensor arranged in the pump shell;
the contact surface of the pump shell and the fluid and the contact part of the pump shell and other parts are coated with insulating layers; at least 1 temperature sensor is arranged in the pump shell; the two ends of the pump shell are provided with electrodes, a low-voltage power supply is added between the electrodes at the two ends, and the pump shell is used as a conductor with resistance to generate heat under the action of low-voltage electricity; the magnitude of the low voltage applied between the electrodes at the two ends of the pump shell is obtained by analyzing and calculating the feedback parameters of the temperature sensor arranged in the pump shell.
The utility model provides a low pressure prevents congealing self-lubricating molten salt pump which characterized in that: the pump comprises a pump body, an insulating coating, a pump wheel, a first electrode, a second electrode, a pump shaft, a cable, a low-voltage power supply and a temperature sensor; insulating coatings are arranged on the surfaces of the pump body, the pump wheel and the pump shaft; a first electrode and a second electrode are respectively arranged at two ends of the pump body, and the first electrode and the second electrode are respectively connected with a low-voltage power supply through cables to form a low-voltage insulating heating loop; the temperature sensor probe is arranged in the pump body.
In the technical scheme, the low-pressure anti-condensation self-lubricating molten salt pump is based on the principle that under the action of voltage applied to two ends of a pump body, current passes through a resistance of the pump body, the pump body generates heat under the action of the voltage and the current, and the generated heat can preheat the pump and prevent molten salt in the pump from condensing; the surfaces of the pump body, the pump wheel and the pump shaft are treated by the nano-grade insulating coating, and super-lubricating interfaces are formed between the pump shaft and the pump body and between the molten salt and the pump wheel, so that abrasion is reduced.
Preferably, the low-pressure anti-condensation self-lubricating molten salt pump can be one of a positive displacement pump and a centrifugal pump.
Preferably, the materials of the pump body, the pump wheel and the pump shaft can be one or more of carbon steel, alloy steel, stainless steel, copper, aluminum, PEEK and ceramics, and the insulating coating material can play a role in reducing motion resistance and lubrication.
Preferably, the insulating coating material can be one or more of ceramics, silicates, phosphates, fluorine resins, heterocyclic polymers and organic silicon insulating high-temperature-resistant materials.
Preferably, the low-voltage power supply may be one of a direct current power supply and an alternating current power supply.
Preferably, the temperature sensor can be one or more of a thermistor, a thermocouple and a thermal resistor.
Preferably, the first electrode and the second electrode and the pump body can be of an integrated structure or an indirect fixing structure.
Compared with the prior art, the method can be realized only by carrying out insulating coating treatment on all parts of the molten salt, and has the advantages of simple structure and mature technology; the self-lubricating insulating coating can reduce the fluid motion resistance, reduce the abrasion of the pump body and prolong the service life; the pump body is used as a heating body, so that the voltage is low, the heat flow density is high, and the safety and the reliability are realized; the temperature sensor directly detects the temperature of the heating body, can realize the accurate control of the low-voltage power supply, and is simple and convenient.
Drawings
Fig. 1 is a schematic diagram of the principle and structure of an embodiment of a low-pressure anti-freezing self-lubricating molten salt pump provided by the invention.
In the figure: 1, a pump body; 2, insulating coating; 3, a pump wheel; 4-a first electrode; 5-a second electrode; 6-a pump shaft; 7-a cable; 8-low voltage power supply; 9-temperature sensor.
Detailed Description
The invention is further described with reference to the following figures and detailed description:
FIG. 1 is a schematic diagram of the principle and structure of a low-voltage anti-freezing self-lubricating molten salt pump, which comprises a pump body, an insulating coating, a pump wheel, a first electrode, a second electrode, a pump shaft, a cable, a low-voltage power supply and a temperature sensor; insulating coatings are arranged on the surfaces of the pump body, the pump wheel and the pump shaft; a first electrode and a second electrode are respectively arranged at two ends of the pump body, and the first electrode and the second electrode are respectively connected with a low-voltage power supply through cables to form a low-voltage insulating heating loop; the temperature sensor probe is arranged in the valve body.
The low-pressure anti-condensation self-lubricating molten salt pump has the following principle:
under the action of voltage applied to two ends of the pump body, current passes through the pump body resistor, the pump body generates heat under the action of the voltage and the current, and the generated heat can preheat the pump and prevent molten salt in the pump from being condensed; the surfaces of the pump body, the pump wheel and the pump shaft are treated by the nano-grade insulating coating, and super-lubricating interfaces are formed between the pump shaft and the pump body and between the molten salt and the pump wheel, so that abrasion is reduced. The low-pressure anti-condensation self-lubricating molten salt pump can be one of a positive displacement pump and a centrifugal pump. The materials of the pump body, the pump wheel and the pump shaft can be one or more of carbon steel, alloy steel, stainless steel, copper, aluminum, PEEK and ceramics. The insulating coating material can be one or more of ceramics, silicates, phosphates, fluororesin, heterocyclic polymer and organic silicon insulating high-temperature-resistant material. The low-voltage power supply can be one of a direct current power supply and an alternating current power supply. The temperature sensor can be one or more of a thermistor, a thermocouple and a thermal resistor. The first electrode, the second electrode and the pump body can be of an integrated structure or an indirect fixing structure.
Claims (9)
1. The utility model provides a low pressure prevents congealing self-lubricating molten salt pump which characterized in that: comprises at least 1 pump shell, at least 1 power component and at least 1 driving component; the pump shell is connected with the driving part through the power part, the driving part drives the power part to move under the action of electric power, the movement of the power part drives the movement of fluid, and the fluid moves in a space formed by the pump shell and the power part;
the contact surface of the pump shell and the fluid and the contact part of the pump shell and other parts are coated with insulating layers; at least 1 temperature sensor is arranged in the pump shell; electrodes are arranged at two ends of the pump shell, a low-voltage power supply is added between the electrodes at the two ends, the pump shell is used as a conductor with a resistor to generate heat under the action of low-voltage electricity, and the generated heat can play a role in preventing the molten salt pump from being condensed or preheating; the magnitude of the low voltage applied between the electrodes at the two ends of the pump shell is obtained by analyzing and calculating the feedback parameters of the temperature sensor arranged in the pump shell.
2. The utility model provides a low pressure prevents congealing self-lubricating molten salt pump which characterized in that: the pump comprises a pump body (1), an insulating coating (2), a pump wheel (3), a first electrode (4), a second electrode (5), a pump shaft (6), a cable (7), a low-voltage power supply (8) and a temperature sensor (9); insulating coatings (2) are arranged on the surfaces of the pump body (1), the pump wheel (3) and the pump shaft (6); a first electrode (4) and a second electrode (5) are respectively arranged at two ends of the pump body (1), and the first electrode (4) and the second electrode (5) are respectively connected with a low-voltage power supply (8) through cables (7) to form a low-voltage insulation heating loop; the probe of the temperature sensor (9) is arranged in the pump body (1).
3. A low pressure anti-freezing self-lubricating molten salt pump according to claim 1 or 2, wherein: the principle of the low-voltage anti-condensation self-lubricating molten salt pump is that under the action of voltage applied to two ends of a pump body, current passes through a resistor of the pump body, the pump body generates heat under the action of the voltage and the current, and the generated heat can preheat the pump and prevent molten salt in the pump from condensing; the surfaces of the pump body, the pump wheel and the pump shaft are treated by the nano-grade insulating coating, and super-lubricating interfaces are formed between the pump shaft and the pump body and between the molten salt and the pump wheel, so that abrasion is reduced.
4. A low pressure anti-freezing self-lubricating molten salt pump according to claim 1 or 2, wherein: the low-pressure anti-condensation self-lubricating molten salt pump can be one of a positive displacement pump and a centrifugal pump.
5. A low pressure anti-freezing self-lubricating molten salt pump according to claim 1 or 2, wherein: the materials of the pump body, the pump wheel and the pump shaft can be one or more of carbon steel, alloy steel, stainless steel, copper, aluminum, PEEK and ceramics.
6. A low pressure anti-freezing self-lubricating molten salt pump according to claim 1 or 2, wherein: the insulating coating material can be one or more of ceramics, silicates, phosphates, fluororesin, heterocyclic polymer and organic silicon insulating high-temperature-resistant material, and the insulating coating material can play a role in reducing motion resistance and lubrication.
7. A low pressure anti-freezing self-lubricating molten salt pump according to claim 1 or 2, wherein: the low-voltage power supply can be one of a direct current power supply and an alternating current power supply.
8. A low pressure anti-freezing self-lubricating molten salt pump according to claim 1 or 2, wherein: the temperature sensor can be one or more of a thermistor, a thermocouple and a thermal resistor.
9. A low pressure anti-freezing self-lubricating molten salt pump according to claim 1 or 2, wherein: the first electrode, the second electrode and the valve body can be of an integrated structure or an indirect fixing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437493.1A CN114087204B (en) | 2021-11-30 | 2021-11-30 | Low-pressure anti-condensation self-lubricating molten salt pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437493.1A CN114087204B (en) | 2021-11-30 | 2021-11-30 | Low-pressure anti-condensation self-lubricating molten salt pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114087204A true CN114087204A (en) | 2022-02-25 |
| CN114087204B CN114087204B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111437493.1A Active CN114087204B (en) | 2021-11-30 | 2021-11-30 | Low-pressure anti-condensation self-lubricating molten salt pump |
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2021
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| Publication number | Publication date |
|---|---|
| CN114087204B (en) | 2024-02-09 |
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