CN113915406B - Low-pressure anti-condensation molten salt valve - Google Patents
Low-pressure anti-condensation molten salt valve Download PDFInfo
- Publication number
- CN113915406B CN113915406B CN202111437673.XA CN202111437673A CN113915406B CN 113915406 B CN113915406 B CN 113915406B CN 202111437673 A CN202111437673 A CN 202111437673A CN 113915406 B CN113915406 B CN 113915406B
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- Prior art keywords
- valve
- molten salt
- condensation
- electrode
- low
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- 150000003839 salts Chemical class 0.000 title claims abstract description 52
- 238000009833 condensation Methods 0.000 title claims abstract description 29
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 239000000523 sample Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 125000000623 heterocyclic group Chemical group 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000004146 energy storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/002—Electric heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Details Of Valves (AREA)
- Safety Valves (AREA)
Abstract
The utility model provides a low pressure anti-condensation fused salt valve, this valve includes valve body, case, valve rod, valve handle, insulating coating, first electrode, cable, low voltage power supply, second electrode and temperature sensor, valve body, case, valve rod and valve handle surface are provided with insulating coating, the valve body both ends are provided with first electrode and second electrode respectively, first electrode and second electrode are connected with the power supply through the cable respectively, temperature sensor probe sets up in the valve body, the power supply of temperature sensor signal direct control valve body generates heat. The low-pressure anti-condensation molten salt valve provided by the invention has the advantages of no need of changing the traditional valve structure, safety, reliability, simplicity and convenience, and can be used for preheating the valve in advance and preventing molten salt from being stored in the valve to solidify and block the valve in the processes of starting, running and stopping the molten salt system for overhauling.
Description
Technical Field
The invention relates to the field of molten salt energy storage heat utilization, in particular to a low-pressure anti-condensation molten salt valve.
Background
The fused salt heat storage system can efficiently utilize renewable energy resources such as low-cost valley electricity and wind photovoltaic, and the like, stores or releases energy by utilizing the conversion between heat energy emitted by the renewable energy sources and the internal energy of fused salt, and adjusts the peak clipping and valley filling of the load on the power grid or the user side, so that the fused salt heat storage system has outstanding economic advantages and wide market prospect.
The valve is used as one of important fluid devices of the molten salt energy storage system, and is mainly used for controlling parameters such as flow, pressure, flow direction and the like in the molten salt conveying process of a system pipeline, and an important control device for guaranteeing stable operation and safety of the system in the working processes such as debugging, maintenance and the like. The fused salt is used 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 has higher melting point, and preferably, the solidifying point of the low-melting-point fused salt is about 100 ℃. In order to ensure the safety of the molten salt system, particularly in the starting, molten salt recovery, shutdown and maintenance work of the molten salt system, the problems of molten salt residue and condensation blockage in the valve are particularly required to be concerned and solved. The Chinese patent 'a crystallization-proof and leakage-proof molten salt valve' (CN 108869758A), the Chinese patent 'an electric heating molten salt valve' (CN 106151673A) and the Chinese patent 'an integrated high-temperature molten salt valve heat tracing device' (CN 109404607A) respectively disclose a molten salt valve for heating an electric tracing system; the Chinese patent 'an independent heating intelligent heat-preserving high-temperature molten salt valve' (CN 111255946A) discloses a high-temperature molten salt valve which enables internal high-temperature heat conduction oil to circularly flow through an electric heating tube and a heat-preserving shell to heat and preserve heat for a valve body. The traditional electric tracing heating system is in indirect contact with the valve, the performance is greatly influenced by the heat transfer process, uncertain factors exist in the installation and operation processes, and the valve is heated by the intermediate heat transfer medium such as heat conducting oil, so that the complexity of the valve is increased.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a low-pressure anti-condensation molten salt valve suitable for the field of molten salt energy storage and heat utilization, so as to solve the problems that a fluid medium of a molten salt system remains crystallized in the valve to cause blockage and influence the safe operation of the molten salt system.
The technical scheme of the invention is as follows:
a low-pressure anti-condensation molten salt valve is characterized in that: the valve comprises a valve body, a valve core, a valve rod, a valve handle, an insulating coating, a first electrode, a cable, a low-voltage power supply, a second electrode and a temperature sensor; the surfaces of the valve body, the valve core, the valve rod and the valve handle are provided with insulating coatings; the two ends of the valve body are respectively provided with a first electrode and a second electrode, and the first electrode and the second electrode are respectively connected with a low-voltage power supply through cables to form an insulating heating loop; the temperature sensor probe is arranged in the valve body.
In the technical scheme, the principle of the low-pressure anti-condensation molten salt valve is that under the action of voltage applied to two ends of the valve body, current passes through the valve body resistor, the valve body generates heat under the action of voltage and current, and the generated heat can be used for preheating and preventing molten salt condensation in the valve.
Preferably, the low-pressure anti-condensation molten salt valve can be one of an electric valve, a hydraulic valve, a pneumatic valve and a manual valve.
Preferably, the low-pressure anti-condensation molten salt valve can be one of a valve type, a gate type, a ball type, a cock type and a butterfly type valve.
Preferably, the valve body, the valve core, the valve rod and the valve handle can be made of one or more of carbon steel, alloy steel, stainless steel and ceramic.
Preferably, the insulating coating material can be one or more of ceramics, silicate, phosphate, fluororesin, heterocyclic polymer and organosilicon insulating high-temperature-resistant material.
Preferably, the low-voltage power supply can 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 valve body can be of an integral structure or an indirect fixing structure.
Compared with the prior art, the invention can be realized by only carrying out insulating coating treatment on each part of the valve without changing the structure of the traditional valve, and has simple structure and mature technology; the valve body is adopted as a heating body, so that the voltage is low, the heat flux density is high, and the safety and reliability are realized; the temperature sensor directly detects the temperature of the heating body, so that the accurate control of the low-voltage power supply can be realized, and the method is simple and convenient.
Drawings
Fig. 1 is a schematic diagram of the principle and structure of an embodiment of a low-pressure anti-condensation molten salt valve provided by the invention.
In the figure: 1-a valve body; 2-valve core; 3-a valve rod; 4-valve handle; 5-insulating coating; 6-a first electrode; 7-a cable; 8-a low voltage power supply; 9-a second electrode; 10-temperature sensor.
Detailed Description
The invention is further described with reference to the drawings and detailed description which follow:
Fig. 1 is a schematic diagram of the principle and structure of a low-pressure anti-condensation molten salt valve, which comprises a valve body 1, a valve core 2, a valve rod 3, a valve handle 4, an insulating coating 5, a first electrode 6, a cable 7, a low-pressure power supply 8, a second electrode 9 and a temperature sensor 10; the surfaces of the valve body, the valve core, the valve rod and the valve handle are provided with insulating coatings; the two ends of the valve body are respectively provided with a first electrode and a second electrode, and the first electrode and the second electrode are respectively connected with a low-voltage power supply through cables to form an insulating heating loop; the temperature sensor probe is arranged in the valve body.
The low-pressure anti-condensation molten salt valve principle is as follows:
Under the action of voltage applied to two ends of the valve body, current passes through the valve body resistor, the valve body generates heat under the action of the voltage and the current, and the generated heat can be used for preheating and preventing molten salt in the valve from condensing. The low-pressure anti-condensation molten salt valve can be one of an electric valve, a hydraulic valve, a pneumatic valve and a manual valve. The low-pressure anti-condensation molten salt valve can be one of a valve type, a gate type, a ball type, a cock type and a butterfly type valve. The valve body, the valve core, the valve rod and the valve handle can be made of one or more of carbon steel, alloy steel, stainless steel and ceramic. The insulating coating material can be one or more of ceramics, silicate, phosphate, fluororesin, heterocyclic polymer and organosilicon 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 valve body can be of an integral structure or an indirect fixed structure.
Claims (8)
1. A low-pressure anti-condensation molten salt valve is characterized in that: the valve comprises a valve body (1), a valve core (2), a valve rod (3), a valve handle (4), an insulating coating (5), a first electrode (6), a cable (7), a low-voltage power supply (8), a second electrode (9) and a temperature sensor (10); the surfaces of the valve body (1), the valve core (2), the valve rod (3) and the valve handle (4) are provided with insulating coatings (5); the two ends of the valve body (1) are respectively provided with a first electrode (6) and a second electrode (9), and the first electrode (6) and the second electrode (9) are respectively connected with a low-voltage power supply (8) through a cable (7) to form an insulating heating loop; the temperature sensor (10) probe is arranged in the valve body (1);
The low-pressure anti-condensation molten salt valve principle is that under the action of voltage applied to two ends of a valve body, current passes through a valve body resistor, the valve body generates heat under the action of voltage and current, and the generated heat is used for preheating and preventing molten salt condensation in the valve.
2. A low pressure anti-condensation molten salt valve as claimed in claim 1 wherein: the low-pressure anti-condensation molten salt valve is one of an electric valve, a hydraulic valve, a pneumatic valve and a manual valve.
3. A low pressure anti-condensation molten salt valve as claimed in claim 1 wherein: the low-pressure anti-condensation molten salt valve is one of a valve type, a gate type, a ball type, a cock type and a butterfly type valve.
4. A low pressure anti-condensation molten salt valve as claimed in claim 1 wherein: the valve body, the valve core, the valve rod and the valve handle are made of one or more of carbon steel, alloy steel, stainless steel and ceramic.
5. A low pressure anti-condensation molten salt valve as claimed in claim 1 wherein: the insulating coating material is one or more of ceramics, silicate, phosphate, fluororesin, heterocyclic polymer and organosilicon insulating high-temperature-resistant material.
6. A low pressure anti-condensation molten salt valve as claimed in claim 1 wherein: the low-voltage power supply is one of a direct-current power supply and an alternating-current power supply.
7. A low pressure anti-condensation molten salt valve as claimed in claim 1 wherein: the temperature sensor is one or more of a thermistor, a thermocouple and a thermal resistor.
8. A low pressure anti-condensation molten salt valve as claimed in claim 1 wherein: the first electrode, the second electrode and the valve body are of an integrated structure or an indirect fixed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437673.XA CN113915406B (en) | 2021-11-30 | 2021-11-30 | Low-pressure anti-condensation molten salt valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111437673.XA CN113915406B (en) | 2021-11-30 | 2021-11-30 | Low-pressure anti-condensation molten salt valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113915406A CN113915406A (en) | 2022-01-11 |
| CN113915406B true CN113915406B (en) | 2024-09-24 |
Family
ID=79248372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111437673.XA Active CN113915406B (en) | 2021-11-30 | 2021-11-30 | Low-pressure anti-condensation molten salt valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113915406B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201336507Y (en) * | 2008-12-15 | 2009-10-28 | 贵阳铝镁设计研究院 | Power distribution device for electric tracing of molten salt heating station |
| CN105422877A (en) * | 2015-12-24 | 2016-03-23 | 百吉瑞（天津）新能源有限公司 | Anti-solidification type high-temperature butterfly valve applicable to molten salt working medium |
| CN108343780A (en) * | 2018-02-27 | 2018-07-31 | 赵亚青 | A kind of electric heating valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4219081B2 (en) * | 2000-07-14 | 2009-02-04 | 日本サーモスタット株式会社 | Heat generating part mainly used for thermal valve |
| US7192001B2 (en) * | 2003-05-08 | 2007-03-20 | The Regents Of The University Of Michigan Office Of Technology Transfer | Thermopneumatic microvalve |
| CN109404607A (en) * | 2017-08-18 | 2019-03-01 | 天津滨海光热技术研究院有限公司 | Integrated high temp fused salt valve heating device |
| CN207848444U (en) * | 2018-01-12 | 2018-09-11 | 重庆川仪调节阀有限公司 | High-temperature molten salt automatic control and adjustment valve |
| CN109529622B (en) * | 2019-01-16 | 2023-11-14 | 北京工大环能科技有限公司 | Flue gas tail denitration system for multiple gas internal combustion engines |
| CN111255946B (en) * | 2020-03-05 | 2024-07-30 | 江苏徐工工程机械研究院有限公司 | A high-temperature molten salt valve with autonomous heating and intelligent insulation |
-
2021
- 2021-11-30 CN CN202111437673.XA patent/CN113915406B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201336507Y (en) * | 2008-12-15 | 2009-10-28 | 贵阳铝镁设计研究院 | Power distribution device for electric tracing of molten salt heating station |
| CN105422877A (en) * | 2015-12-24 | 2016-03-23 | 百吉瑞（天津）新能源有限公司 | Anti-solidification type high-temperature butterfly valve applicable to molten salt working medium |
| CN108343780A (en) * | 2018-02-27 | 2018-07-31 | 赵亚青 | A kind of electric heating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113915406A (en) | 2022-01-11 |
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