CN114440477A - Fused salt temperature difference control device - Google Patents
Fused salt temperature difference control device Download PDFInfo
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- CN114440477A CN114440477A CN202011211558.6A CN202011211558A CN114440477A CN 114440477 A CN114440477 A CN 114440477A CN 202011211558 A CN202011211558 A CN 202011211558A CN 114440477 A CN114440477 A CN 114440477A
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- 150000003839 salts Chemical class 0.000 title claims abstract description 92
- 238000010438 heat treatment Methods 0.000 claims abstract description 169
- 238000001816 cooling Methods 0.000 claims abstract description 50
- 238000012360 testing method Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910020363 KCl—MgCl2 Inorganic materials 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention discloses a molten salt temperature difference control device which comprises a heating pipeline, a first heating furnace, a second heating furnace and a temperature control cabinet, wherein the heating pipeline is positioned inside the first heating furnace and comprises a first temperature compensation section, a high-temperature constant-temperature section, a second temperature compensation section and a low-temperature cooling section which are sequentially connected and form a closed molten salt loop; the first heating furnace is also provided with a through opening, one side of the furnace body of the first heating furnace is provided with a fixed rod, and the fixed rod is a sliding rod; the shape of the second heating furnace is matched with that of the through opening, and the second heating furnace can be detachably covered on the through opening; and a support piece is arranged on the furnace body of the second heating furnace, is a fixed accessory with a hole and is detachably connected to the sliding rod. The molten salt temperature difference control device provided by the invention is convenient and flexible to operate, high in economy and accurate in temperature difference control, and allows pressure and temperature disturbance in test operation.
Description
Technical Field
The invention relates to the field of molten salt heating, in particular to a molten salt temperature difference control device.
Background
The molten salt has the advantages of high use temperature, high specific heat capacity, high convective heat transfer coefficient, low viscosity, low saturated steam pressure, good thermal stability, heat transfer and storage capacities and the like, and is widely applied to the fields of various Molten Salt Reactors (MSR) and focused solar thermal power generation (CSP). Temperature gradients are prevalent in the environment of practical use of molten salts. For example, the temperature difference between the primary circuit outlet and inlet of a molten salt test reactor (MSRE) of Oak Ridge national laboratory (ONRL) is 20-30 ℃. The temperature difference between the molten salt hot tank and the molten salt cold tank of the American Solar Two and Crescent Dunes tower type CSP power station is as high as more than 200 ℃. The temperature difference of the molten salt can cause the metal structural material in service in a high-temperature area to be always in an unsaturated state, and a continuous and permanent corrosion process is kept. Therefore, the method has important significance for researching the corrosion behavior of the metal material in the temperature difference molten salt and the protection method of the metal material by simulating the molten salt temperature difference environment in a laboratory and reducing the actual service working condition of the metal material.
In fact, the temperature difference of the molten salt depends on many factors such as heater temperature control, loop pipeline size, molten salt medium type, molten salt flow velocity, heat exchange efficiency of the cooling medium, and the like. At present, mature molten salt temperature difference equipment exists abroad, and a temperature difference device is also reported domestically. But the integral type structure that fused salt difference in temperature controlling means that has reported adopted has certain safety risk, and the security of inside cooling is poor promptly, and uses and maintains loaded down with trivial details, has increased the operation degree of difficulty and cost. In addition, the existing molten salt temperature difference control device has poor disturbance resistance, and pressure fluctuation and temperature fluctuation can cause the molten salt to solidify, so that the success rate of the test is reduced.
Disclosure of Invention
The invention aims to solve the technical problems that in the prior art, a fused salt temperature difference control device is low in safety of a fused salt temperature difference loop heating device cooling mode, complex in maintenance and operation, high in operation cost and poor in disturbance rejection capability.
The invention solves the technical problems through the following technical scheme:
the invention provides a molten salt temperature difference control device which comprises a heating pipeline, a first heating furnace, a second heating furnace and a temperature control cabinet, wherein the heating pipeline is positioned inside the first heating furnace and comprises a first temperature compensation section, a high-temperature constant-temperature section, a second temperature compensation section and a low-temperature cooling section which are sequentially connected and form a closed molten salt loop;
the first heating furnace is also provided with a through opening, one side of the furnace body of the first heating furnace is provided with a fixed rod, and the fixed rod is a sliding rod;
the shape of the second heating furnace is matched with that of the through opening, and the second heating furnace can be detachably covered on the through opening; and a support piece is arranged on the furnace body of the second heating furnace, is a fixed accessory with a hole and is detachably connected to the sliding rod.
The second heating furnace has the functions of heating, heat preservation and cooling. And the first heating furnace and the second heating furnace are combined or disconnected by moving the supporting piece on the sliding rod, so that the temperature difference control of the heating pipeline is realized.
Preferably, the first heating furnace comprises a first furnace body and a second furnace body, the first furnace body and the second furnace body can be mutually buckled to form a heating chamber of the first heating furnace, a groove for arranging the heating pipeline is formed in the heating chamber, and the second heating furnace and the slide bar are respectively arranged on the first furnace body and the second furnace body.
Preferably, the through opening corresponds to the location of the cryogenic cooling section. The low-temperature cooling section is heated and cooled from the front direction and the rear direction at the same time, and heating and cooling efficiency is improved.
When the second heating furnace is separated from the first heating furnace, the low-temperature cooling section is exposed in the air and is cooled by air cooling or forced convection cooling. The second heating furnace and the first heating furnace are combined or disconnected according to test requirements, the operation is simple and flexible, and the safety is high.
Preferably, the heating pipeline further comprises a first buffer tank and a second buffer tank which are arranged inside the first heating furnace; the first buffer tank, the high-temperature constant-temperature section, the first temperature compensation section, the low-temperature cooling section and the second buffer tank are sequentially connected in series.
The buffering function of the first buffer tank and the second buffer tank is to ensure that the molten salt liquid level which abnormally rises due to pressure or temperature fluctuation is not higher than that of the first buffer tank and the second buffer tank, so that the problem of low-temperature freezing blockage of the molten salt can be effectively avoided; the first buffer tank can also be used as a molten salt material to enter the transfer station of the heating pipeline, namely the molten salt material is stored in the independent molten salt storage tank, the molten salt is pressed into the first buffer tank from the molten salt storage tank through the molten salt transfer pipeline by utilizing the pressure difference between the molten salt storage tank and the upper part of the first buffer tank, and then the molten salt is pressed into the main body of the heating pipeline and the second buffer tank, so that the molten salt is uniformly distributed in the heating pipeline.
Preferably, temperature control elements are arranged in the first heating furnace and the second heating furnace, and the temperature control elements are respectively controlled by independent heating temperature control elements.
The temperature control element is used for controlling the temperature of the first buffer tank, the high-temperature constant-temperature section, the first temperature compensation section, the low-temperature cooling section, the second buffer tank and the second temperature compensation section respectively. It is right the temperature control component that first buffer tank carries out the heating is first buffer tank heater, right the temperature control component that the second buffer tank carries out the heating is the second buffer tank heater, right the temperature control component that high temperature thermostatic section carried out the heating is high temperature thermostatic section heater, right the temperature control component that the low temperature cooling section carried out the heating is second heating furnace heater, right the temperature control component that first temperature compensation section carried out the heating is first temperature compensation heater, right the temperature control component that second temperature compensation section carried out the heating is second temperature compensation heater.
The first buffer tank heater and the second buffer tank heater are respectively used for preheating the first buffer tank and the second buffer tank in the heating pipeline; the high-temperature constant-temperature section heater enables the temperature of the molten salt of the high-temperature constant-temperature section to be maintained at a test value, and the second heating furnace heater enables the molten salt of the low-temperature cooling section to be maintained in a liquid state; the first temperature compensation heater is used for compensating heat loss caused by the flowing of the molten salt from the high-temperature section to the low-temperature section, and avoiding freezing and blocking of a pipeline below the first temperature compensation heater; the second temperature compensation heater is used for compensating the loss of the heat of the molten salt in the low-temperature cooling section, so that the temperature of the molten salt reaches or approaches the temperature of a molten salt inlet of the high-temperature constant-temperature section.
Preferably, all the temperature control elements of the first heating furnace and all the temperature control elements of the second heating furnace are connected to the same temperature control cabinet to perform unified temperature control operation.
Preferably, the heating pipeline is of a parallelogram structure, the first temperature compensation section is parallel to the second temperature compensation section, and the high-temperature constant-temperature section is parallel to the low-temperature cooling section. The parallelogram structure is beneficial to controlling the flow velocity of the molten salt in the heating pipeline.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
(1) the device of the invention is convenient and flexible to operate: the first heating furnace and the second heating furnace are connected by the sliding rod, the combination and disconnection of the first heating furnace and the second heating furnace can be adjusted by a simple drawing mode, the heating, heat preservation and cooling of a heating pipeline are realized, and the operation is flexible, convenient and fast.
(2) The device of the invention has high economical efficiency: the low-temperature cooling section is cooled in an air cooling or forced convection mode, the cooling medium is low in price, the operation cost in the cooling process is low, and the accurate temperature control of the low-temperature cooling section can be realized due to the fact that the air cooling is mild and the temperature control element of the low-temperature cooling section is matched to control the temperature, and the temperature control accuracy is consistent with the temperature control accuracy of the electric furnace.
(3) The device of the invention has high accuracy: the independent temperature control element is matched with the second heating furnace, so that the temperature of each section of the loop can be effectively controlled, the high-temperature constant-temperature section and the low-temperature cooling section of the loop can be easily maintained in a stable temperature difference range, and the experimental requirements of 600-800 ℃ molten salt and 0-200 ℃ temperature difference between the high-temperature constant-temperature section and the low-temperature cooling section can be met.
Furthermore, the temperature difference control device allows the pressure and temperature disturbance in the test operation, ensures the normal operation of the test, and is a safe and reliable temperature difference control device which is simple and convenient to operate and high in economy and is suitable for a high-temperature molten salt loop.
Drawings
FIG. 1 is a schematic structural view of a molten salt temperature difference control apparatus in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a heating circuit in embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of the internal composition of the first heating furnace in embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of the internal composition of a second heating furnace in embodiment 1 of the present invention;
FIG. 5 is a schematic structural view of an internal section of a first heating furnace and a second heating furnace combined in embodiment 1 of the present invention;
reference numerals:
1-a first heating furnace; 2-a second heating furnace; 3-heating the pipeline; 4-connecting hardware; 5-fixing the rod; 6-a support member; 7-temperature control cabinet; 8-a first buffer tank; 9-high temperature constant temperature section; 10-a first temperature compensation section; 11-a cryogenic cooling section; 12-a second buffer tank; 13-a second temperature compensation section; 14-molten salt inlet; 15-waste salt tank; 16-a first heating furnace hearth; 17-a first buffer tank heater; 18-high temperature constant temperature section heater; 19-a first temperature compensating heater; 20-a second buffer tank heater; 21-a second temperature compensating heater; 22-first heating furnace insulating layer; 23-a first furnace metal shell; 24-a through opening; 25-a second heating furnace hearth; 26-a second furnace heater; 27-a second heating furnace heat-insulating layer; 28-second furnace metal shell.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
Fig. 1 is a schematic structural view of a molten salt temperature difference control device, fig. 2 is a schematic structural view of a heating pipeline, fig. 3 is a schematic structural view of an internal component of a first heating furnace, fig. 4 is a schematic structural view of an internal component of a second heating furnace, and fig. 5 is a schematic structural view of an internal section of the first heating furnace and the second heating furnace after being combined, as shown in fig. 1 to 5, embodiment 1 of the present invention provides a molten salt temperature difference control device, which includes: the device comprises a heating pipeline 3, a first heating furnace 1, a second heating furnace 2 and a temperature control cabinet 7. The heating pipeline 3 is located inside the first heating furnace 1, the heating pipeline 3 comprises a first temperature compensation section 10, a high-temperature constant-temperature section 9, a second temperature compensation section 13 and a low-temperature cooling section 11 which are sequentially connected and form a closed molten salt loop, wherein the first temperature compensation section 10 is parallel to the second temperature compensation section 13, and the high-temperature constant-temperature section 9 is parallel to the low-temperature cooling section 11. The parallelogram structure is beneficial to controlling the flow velocity of the fused salt in the heating pipeline 3.
The first heating furnace 1 comprises a first furnace body and a second furnace body, the first furnace body and the second furnace body can be mutually buckled to form a heating chamber of the first heating furnace 1, the heating chamber is a first heating furnace hearth 16, a groove for arranging a heating pipeline 3 is formed in the first heating furnace hearth 16, the two furnace bodies are connected through a connecting hardware 4, the heating pipeline 3 is positioned between the two furnace bodies, and the first heating furnace 1 sequentially consists of the first heating furnace hearth 16, a first heating furnace heat-insulating layer 22 and a first heating furnace metal shell 23 from inside to outside; the first furnace body and the second furnace body are respectively provided with a through opening 24 and a fixing rod 5, the through opening 24 is used for being embedded into the second heating furnace 2, and the fixing rod 5 is a sliding rod. This first heating furnace 1 has adopted split type haver structure, and this split type haver structure is convenient for heating pipeline 3's installation, and equipment is compact, easily operation.
The second heating furnace 2 consists of a second heating furnace hearth 25, a second heating furnace heat-insulating layer 27 and a second heating furnace metal shell 28 from inside to outside in sequence. The shape of the second heating furnace 2 is matched with the shape of the through opening 24, the through opening 24 is detachably covered on the through opening 24, and meanwhile, the through opening 24 corresponds to the position of the low-temperature cooling section 11, so that the low-temperature cooling section 11 is favorably heated and cooled from the front direction and the rear direction, and the heating and cooling efficiency is improved. The body of the second heating furnace 2 is provided with a support piece 6, and the support piece 6 is a fixed fitting with a round hole and is detachably connected with a slide rod. The second heating furnace 2 has the functions of heating, heat preservation and cooling. The temperature difference control of the heating pipeline 3 is realized by moving the support piece 6 on the slide bar and combining or disconnecting the first heating furnace 1 and the second heating furnace 2. When the first heating furnace 1 and the second heating furnace 2 are combined, the heating pipeline 3 can be heated, when the first heating furnace 1 and the second heating furnace 2 are disconnected, the low-temperature cooling section 11 in the heating pipeline 3 can be exposed in the air, air cooling is carried out by utilizing the outside air, or the forced air cooling device is used for directionally blowing air to the heating pipeline 3 exposed in the air, forced cooling is carried out on the heating pipeline 3, and temperature gradient adjustment of the molten salt is realized. The movable second heating furnace 2 ensures that the cooling operation is safe, reliable, simple and feasible, and simultaneously improves the economical efficiency of the equipment.
The heating pipeline 3 further comprises a first buffer tank 8 and a second buffer tank 12 which are arranged in the first heating furnace 1, and the first buffer tank 8, the high-temperature constant-temperature section 9, the first temperature compensation section 10, the low-temperature cooling section 11 and the second buffer tank 12 are sequentially connected in series. The buffering action of the first buffer tank 8 and the second buffer tank 12 enables the molten salt liquid level which abnormally rises due to pressure or temperature fluctuation to be not higher than that of the first buffer tank 8 and the second buffer tank 12, so that the problem of low-temperature freezing and blocking of molten salt can be effectively avoided; first buffer tank 8 still can get into the transfer station of heating pipeline 3 as the fused salt material, and the fused salt material is stored in solitary fused salt storage tank promptly, utilizes the atmospheric pressure difference of fused salt storage tank and 8 tops of first buffer tank, and the fused salt is impressed in first buffer tank 8 through fused salt transfer pipeline and fused salt entry 14 from the fused salt storage tank, impresses in heating pipeline 3 main part and the second buffer tank 12 from first buffer tank 8 again, is favorable to the fused salt evenly distributed in heating pipeline 3. After the test is finished, the molten salt material flows into the waste salt tank 15 to be subjected to molten salt recovery.
Temperature control elements are arranged in the first heating furnace 1 and the second heating furnace 2, and the temperature control elements respectively adopt independent heating temperature control elements to control the temperature. All temperature control elements of the first heating furnace 1 and all temperature control elements of the second heating furnace 2 are connected into the same temperature control cabinet 7 for uniform temperature control operation. The temperature control element controls the temperature of the first buffer tank 8, the high-temperature constant-temperature section 9, the first temperature compensation section 10, the low-temperature cooling section 11, the second buffer tank 12 and the second temperature compensation section 13 respectively. The temperature control element that heats first buffer tank 8 is first buffer tank heater 17, the temperature control element that heats second buffer tank 12 is second buffer tank heater 20, the temperature control element that heats high temperature thermostatic section 9 is high temperature thermostatic section heater 18, the temperature control element that heats low temperature cooling section 11 is second heating furnace heater 26, the temperature control element that heats first temperature compensation section 10 is first temperature compensation heater 19, the temperature control element that heats second temperature compensation section 13 is second temperature compensation heater 21.
The high-temperature constant-temperature section heater 18 enables the temperature of the molten salt of the high-temperature constant-temperature section 9 to be maintained at a test value, and the second heating furnace heater 26 enables the molten salt of the low-temperature cooling section 11 to be maintained in a liquid state; the first temperature compensation heater 19 is used for compensating heat loss caused by the flowing of the molten salt from the high-temperature section to the low-temperature section, and avoiding freezing and blocking of the pipeline below; the second temperature compensation heater 21 is used for compensating the loss of the molten salt heat of the low-temperature cooling section 11, so that the temperature of the molten salt reaches or approaches the temperature of a molten salt inlet of the high-temperature constant-temperature section 9; the first and second buffer tank heaters 17 and 20 are used to preheat the first and second buffer tanks 8 and 12, respectively, in the heating line 3.
In the first heating furnace 1, the first buffer tank heater 17 and the second buffer tank heater 20 are respectively provided with 1 pair of temperature control elements, the high-temperature constant-temperature section heater 18 is provided with 3 pairs of temperature control elements, and the first temperature compensation heater 19 and the second temperature compensation heater 21 are respectively provided with 1 pair of temperature control elements. In the second heating furnace 2, 1 pair of heating elements are arranged for heating and insulating the low-temperature cooling section 11 of the heating pipeline 3.
The control effect data of the molten salt temperature difference control device on the molten salt temperature difference are shown in table 1.
Table 1 data of the control effect of the molten salt temperature difference control device of the present invention on the molten salt temperature difference
| Examples | Species of molten salts | Temperature of high-temperature constant-temperature section | Temperature of low temperature cooling | Temperature difference | |
| 1 | NaCl-KCl-MgCl2 | 700℃±1℃ | 650℃±1℃ | 50℃±1 |
|
| 2 | NaCl-KCl-MgCl2 | 700℃±1℃ | 600℃±5℃ | 100℃±5 |
|
| 3 | NaCl-KCl-MgCl2 | 700℃±1℃ | 510℃±10℃ | 190℃±10℃ |
As can be seen from the data in Table 1, the temperature difference between the set temperature and the actual temperature of the molten salt temperature difference control device is small, only 0-10 ℃, the temperature control is accurate, and the effect of 0-200 ℃ of temperature difference between the high-temperature constant-temperature section 9 and the low-temperature cooling section 11 can be achieved.
By adopting the design, the temperature difference environment of the molten salt in the heating pipeline can be effectively controlled, and the device has the advantages of simple structure, low cost and the like. The temperature difference control device of the molten salt loop can meet the requirements of a corrosion test in a molten salt system with the temperature difference of 600-800 ℃ and the temperature difference of 0-200 ℃.
While specific embodiments of the invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (7)
1. A fused salt temperature difference control device is characterized by comprising a heating pipeline, a first heating furnace, a second heating furnace and a temperature control cabinet, wherein the heating pipeline is positioned inside the first heating furnace and comprises a first temperature compensation section, a high-temperature constant-temperature section, a second temperature compensation section and a low-temperature cooling section which are sequentially connected and form a closed fused salt loop;
the first heating furnace is also provided with a through opening, one side of the furnace body of the first heating furnace is provided with a fixed rod, and the fixed rod is a sliding rod;
the shape of the second heating furnace is matched with that of the through opening, and the second heating furnace can be detachably covered on the through opening; and a support piece is arranged on the furnace body of the second heating furnace, is a fixed accessory with a hole and is detachably connected to the sliding rod.
2. The molten salt temperature difference control device of claim 1, wherein the first heating furnace comprises a first furnace body and a second furnace body, the first furnace body and the second furnace body can be mutually buckled to form a heating chamber of the first heating furnace, a groove for arranging the heating pipeline is formed in the heating chamber, and the second heating furnace and the sliding rod are respectively arranged on the first furnace body and the second furnace body.
3. The molten salt temperature difference control device according to claim 1, wherein the through opening corresponds to a position of the low-temperature cooling section.
4. The molten salt temperature difference control device according to claim 1, wherein the heating pipeline further comprises a first buffer tank and a second buffer tank disposed inside the first heating furnace; the first buffer tank, the high-temperature constant-temperature section, the first temperature compensation section, the low-temperature cooling section and the second buffer tank are sequentially connected in series.
5. The molten salt temperature difference control device of claim 1, wherein temperature control elements are arranged in the first heating furnace and the second heating furnace, and the temperature control elements are respectively controlled by adopting independent heating temperature control elements.
6. The molten salt temperature difference control device of claim 1, wherein all temperature control elements of the first heating furnace and all temperature control elements of the second heating furnace are connected to the same temperature control cabinet for unified temperature control operation.
7. The molten salt temperature difference control device of claim 1, wherein the heating pipeline is of a parallelogram structure, the first temperature compensation section is parallel to the second temperature compensation section, and the high temperature constant temperature section is parallel to the low temperature cooling section.
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| CN202011211558.6A CN114440477B (en) | 2020-11-03 | 2020-11-03 | Fused salt temperature difference control device |
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| CN202011211558.6A CN114440477B (en) | 2020-11-03 | 2020-11-03 | Fused salt temperature difference control device |
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| KR20030091462A (en) * | 2002-05-28 | 2003-12-03 | 한국건설기술연구원 | The Portable Furnace for the Thermal Properties Testing of Concrete at High Temperature |
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2020
- 2020-11-03 CN CN202011211558.6A patent/CN114440477B/en active Active
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