CN209445866U - It is a kind of to store the wind tunnel system that heat-releasing device realization operating condition continuously changes using fused salt - Google Patents
It is a kind of to store the wind tunnel system that heat-releasing device realization operating condition continuously changes using fused salt Download PDFInfo
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- CN209445866U CN209445866U CN201822169492.3U CN201822169492U CN209445866U CN 209445866 U CN209445866 U CN 209445866U CN 201822169492 U CN201822169492 U CN 201822169492U CN 209445866 U CN209445866 U CN 209445866U
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- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
It is a kind of to store the wind tunnel system that heat-releasing device realization operating condition continuously changes using fused salt, belong to fused salt storage/exothermic technology field.It include: air-fused salt heat exchanging device, electric furnace, flow control valve and the shut-off valve of high/low temperature fused salt tank and pump for liquid salts, counter-flow arrangement.Auxiliary electrical heater Duan Ze uses the relatively small electric heater of power.For the requirement for meeting design conditions consecutive variations, above-mentioned three sections are connected by pipeline valve, by control respective valves opening and closing, achievees the purpose that take different temperatures air.It is big that the system can give full play to fused salt amount of stored heat, heat release time short advantage, further dispersed-heated power, can largely eliminate because using high-power electric heater to concentrate many drawbacks brought by heating in short-term, further increase the operational efficiency and reliability of system.
Description
Technical field
The utility model patent using fused salt store heat-releasing device replace high-power electric heater to enter wind-tunnel air into
Row heating.Belong to fused salt storage/exothermic technology field.
Background technique
Wind-tunnel is a kind of device for manufacturing air-flow, in the special closed tubular space of height with certain geometric dimension
The related physical property for being present in each determinand of wind field is detected by the gas shock for continuing high speed, generally comes aircraft, airship
Equal aircraft will carry out wind tunnel experiment before formally coming into operation, on this basis, the layman of improve and perfect aircraft,
In addition to this, also it is widely used in scientific research field relevant to aerodynamics.
However the lasting controllable adjustment for how to realize air themperature to be to meet different working condition requirements, at present still with electricity
Heating technique is major measure.Due to needing that air is heated to design conditions temperature in a short time, for electric heating
The controlled power range of device proposes higher requirement, and corresponding product manufacturing, operation, maintenance cost are also promoted therewith.
For this problem, this patent proposes that a kind of realize using fused salt storage/heat-releasing device continues controllably to heat to air
Scheme to replace traditional Electric heating.Since each design conditions duration is shorter and air capacity is larger, use
Electric heater needs to concentrate biggish heating power in a short time, and the scale and reliability for heating equipment propose higher
Requirement, air is heated by fused salt heat release, before not carrying out wind tunnel experiment, fused salt can be constantly in heat storage state, with compared with
Low heating power heats fused salt, then can effectively disperse electrical power, can further decrease equipment investment and operation
Cost.Before air is passed through wind-tunnel, fused salt heat-releasing device is first passed around, for the requirement for meeting design conditions, by adjusting actually changing
The parameters such as heat area and working medium flow come guarantee air in a short time take heat to match with design temperature rise, to realize sky
Temperature degree is continuously controllable.For can be provided the operating condition of maximum temperature rise beyond fused salt heat release, then need additionally to utilize small-scale auxiliary
For electric heater unit to heating, the requirement for heater is then relatively low.
Utility model content
Since the air temperature variations range of design conditions is larger, the fused salt of single kind, which is difficult to meet to design, to be wanted
It asks, needs to select different types of pipeline within the scope of different temperature.
The system specifically includes that low-temperature zone, high temperature section, auxiliary electrical heater section, auxiliary piping；
Low-temperature zone includes: the first air-of the first high temperature melting salt cellar (L1), the first low-temperature molten salt tank (L2), counter-flow arrangement
Fused salt heat exchanging device (L3), the first high-temperature melting salt pump (L4), the first low-temperature molten salt pump (L5), first flow regulating valve (L6), first
Air flow rate adjustment valve (L7), the first electric furnace (L8), the first shut-off valve (L9)；
High temperature section includes: the second air-of the second high temperature melting salt cellar (H1), the second low-temperature molten salt tank (H2), counter-flow arrangement
Fused salt heat exchanging device (H3), the second high-temperature melting salt pump (H4), the second low-temperature molten salt pump (H5), second flow regulating valve (H6), second
Air flow rate adjustment valve (H7), the second electric furnace (H8), the second shut-off valve (H9)；
First high temperature melting salt cellar (L1) by pipeline via the first high-temperature melting salt pump (L4), first flow regulating valve (L6),
First air-fused salt heat exchanging device (L3) is connect with the first low-temperature molten salt tank (L2), and the first low-temperature molten salt tank (L2) is passed through by pipeline
It is connect by the first low-temperature molten salt pump (L5), the first electric furnace (L8) with the first high temperature melting salt cellar (L1), forms low-temperature zone circuit；
Second high temperature melting salt cellar (H1) by pipeline via the second high-temperature melting salt pump (H4), second flow regulating valve (H6),
Second air-fused salt heat exchanging device (H3) is connect with the second low-temperature molten salt tank (H2), and the second low-temperature molten salt tank (H2) is passed through by pipeline
It is connect by the second low-temperature molten salt pump (H5), the second electric furnace (H8) with the second high temperature melting salt cellar (H1), forms high temperature section and return
Road；
Gas piping are as follows: blower (12) is successively molten with the first air flow rate adjustment valve (L7), the first air-by pipeline
It is divided into two branches after salt heat exchanger (L3) connection, a branch and the first shut-off valve (L9) are connected to an escape pipe crossing,
Another branch is successively via third air flow rate adjustment valve (10), the second air flow rate adjustment valve (H7), the second air-fused salt
Liang Ge branch is again split into after heat exchanger (H3), a branch and the second shut-off valve (H9) are connected to an escape pipe crossing,
Another branch connect via the 4th air flow rate adjustment valve (9) with electric heater (11), as an escape pipe crossing.
Air is unified to be provided by the blower (12), and blower (12) passes through variable frequency adjustment air mass flow.
Low-temperature zone circuit: being to store heat release working medium with mixed nitrate, such as Ca (NO3)2-KNO2。
High temperature section circuit: the storage heat release working medium selected is mixed carbonate, such as Li2CO3-K2CO3- Na2CO3。
The design conditions of wind-tunnel and the air themperature for entering wind-tunnel are roughly divided into 8, and wherein minimum temperature is 108.1 DEG C,
Maximum temperature is 926.85 DEG C, is based on this, design conditions can be greatly classified into 3 sections i.e. (100 DEG C≤t≤500 of low-temperature zone
DEG C), high temperature section (500 DEG C≤t≤800 DEG C), auxiliary electrical heater section (800 DEG C≤t≤1000 DEG C).The storage of low-temperature zone selection is put
Hot working fluid is mixed nitrate, using the independently developed mixed nitrate Ca (NO in this laboratory3)2-KNO2, the use of temperature is 350
~500 DEG C, maximum operation (service) temperature range can extend to 115~550 DEG C, therefore meet the requirement of low-temperature zone, actually answer
With setting its operating temperature ratings section in the process as 100 DEG C≤t≤500 DEG C；The storage heat release working medium that high temperature section selects is mixing
Carbonate Li2CO3-K2CO3-Na2CO3, it the use of temperature is 400~800 DEG C, therefore meet the requirement of high temperature section, actually answering
With setting its operating temperature ratings section in the process as 500 DEG C≤t≤800 DEG C；Auxiliary electrical heater section, due to air by with it is molten
Salt heat exchange can not obtain the requirement that enough temperature rises meet design conditions, it is therefore desirable to which electrical auxiliary heater provides remaining heat
Amount.Therefore the program overcomes many drawbacks brought by the high-power electric heater heating air of single use.
Detailed description of the invention:
Fig. 1 is Tthe utility model system implementation principle figure；
The first high temperature melting of L1 salt cellar, the first low-temperature molten salt tank of L2, the first high temperature of the first air-fused salt heat exchanging device L3, L4
Pump for liquid salts, the first low-temperature molten salt of L5 pump, L6 first flow regulating valve, the first air flow rate adjustment valve of L7, the first electric furnace of L8,
The first shut-off valve of L9.
The second high temperature melting of H1 salt cellar, the second low-temperature molten salt tank of H2, the second high temperature of the second air-fused salt heat exchanging device H3, H4
Pump for liquid salts, the second low-temperature molten salt of H5 pump, H6 second flow regulating valve, the second air flow rate adjustment valve of H7, the second electric furnace of H8,
The second shut-off valve of H9,9 the 4th air flow rate adjustment valves, 10 third air flow rate adjustment valves, 11 electric heaters, 12 blowers.
Specific embodiment
The utility model is described further below with reference to embodiment, but the utility model is not limited to following implementation
Example.
Embodiment 1
Specific pipeline is shown in Fig. 1.
It, will be high when the temperature range of the air needed for design conditions are in low-temperature zone, that is, wind-tunnel is 100 DEG C≤t≤500 DEG C
The second air flow rate adjustment valve of temperature section H7, third air flow rate adjustment valve 10 are closed, the first air flow rate adjustment valve of low-temperature zone L7,
First shut-off valve L9 is opened；Open the first-class of the first high-temperature melting salt pump L4, the first low-temperature molten salt pump L5 and mixed nitrate
Adjustable valve L6 establishes mixed nitrate circulation loop, by adjusting the frequency of blower 12 and opening for air flow rate adjustment valve L7
Degree to adjust the air mass flow into the first air-fused salt heat exchanging device L3, by adjust the first high-temperature melting salt pump L4 frequency and
The aperture of first flow regulating valve L6 adjusts the mixed nitrate flow into the first air-fused salt heat exchanging device L3, and first
For air-fused salt heat exchanging device L3 by the way of counter-flow arrangement, shell side and tube side fluid are respectively air and mixed nitrate, root
The effective heat exchange area that heat exchanger is determined according to preset atmosphere temperature rising rate, by adjusting air and mixed nitrate
Flow takes heat request meet design conditions.Period requires the first electric furnace L8 to want continuous service.
When the temperature range of the air needed for design conditions are in high temperature section, that is, wind-tunnel is 500 DEG C≤t≤800 DEG C, by the
One shut-off valve L9 is closed, and the second shut-off valve H9, subsidiary loop third air flow rate adjustment valve 10 are opened, and low-temperature zone circuit is kept just
The second flow regulating valve H6 of the second high-temperature melting salt pump H4, the second low-temperature molten salt pump H5 and mixed carbonate are opened in often operation,
Mixed carbonate circulation loop is established, is adjusted by the frequency and the aperture of the second air flow rate adjustment valve H7 that adjust blower 12
Section into the second air-fused salt heat exchanging device H3 air mass flow (air enter high temperature section circuit before will by low-temperature zone return
Road keeps the valve opening in low-temperature zone circuit constant), H3 is by the way of counter-flow arrangement for the second air-fused salt heat exchanging device, shell
Journey and tube side fluid are respectively air and mixed carbonate, and heat exchanger uses mentality of designing identical with low-temperature zone, during which want the
Two electric furnace H8 want continuous service.
The temperature range of the air needed for the maximum temperature rise i.e. wind-tunnel that design conditions are capable of providing beyond fused salt heat release is
It when 800 DEG C≤t≤1000 DEG C, needs to provide remaining heat using electrical auxiliary heater, is guaranteeing low-temperature zone and high temperature section just
Often operation, the second shut-off valve H9 are closed, and the 4th air flow rate adjustment valve 9 is opened, and electrical auxiliary heater is opened and set corresponding
Heating power guarantees that the rate of temperature rise of air meets the requirement of design conditions.
It for the valve before heat exchanger, is only just completely closed when system is out of service, passes through tune in the process of running
Its aperture is saved to realize the adjusting to air mass flow, therefore will not be completely closed.
Realize the switching of three kinds of different temperatures gas sources, by the opening and closing of control shut-off valve to meet different designs operating condition
It is required that.
Claims (3)
1. a kind of store the wind tunnel system that heat-releasing device realization operating condition continuously changes using fused salt, which is characterized in that the system is main
It include: low-temperature zone, high temperature section；
Low-temperature zone includes: the first air-fused salt of the first high temperature melting salt cellar (L1), the first low-temperature molten salt tank (L2), counter-flow arrangement
Heat exchanger (L3), the first high-temperature melting salt pump (L4), the first low-temperature molten salt pump (L5), first flow regulating valve (L6), the first air
Flow control valve (L7), the first electric furnace (L8), the first shut-off valve (L9)；
High temperature section includes: the second air-fused salt of the second high temperature melting salt cellar (H1), the second low-temperature molten salt tank (H2), counter-flow arrangement
Heat exchanger (H3), the second high-temperature melting salt pump (H4), the second low-temperature molten salt pump (H5), second flow regulating valve (H6), the second air
Flow control valve (H7), the second electric furnace (H8), the second shut-off valve (H9)；
First high temperature melting salt cellar (L1) is by pipeline via the first high-temperature melting salt pump (L4), first flow regulating valve (L6), first
Air-fused salt heat exchanging device (L3) is connect with the first low-temperature molten salt tank (L2), and the first low-temperature molten salt tank (L2) is by pipeline via the
One low-temperature molten salt pump (L5), the first electric furnace (L8) are connect with the first high temperature melting salt cellar (L1), form low-temperature zone circuit；
Second high temperature melting salt cellar (H1) is by pipeline via the second high-temperature melting salt pump (H4), second flow regulating valve (H6), second
Air-fused salt heat exchanging device (H3) is connect with the second low-temperature molten salt tank (H2), and the second low-temperature molten salt tank (H2) is by pipeline via the
Two low-temperature molten salts pump (H5), the second electric furnace (H8) are connect with the second high temperature melting salt cellar (H1), form high temperature section circuit；
Gas piping are as follows: blower (12) is successively changed with the first air flow rate adjustment valve (L7), the first air-fused salt by pipeline
It is divided into two branches after hot device (L3) connection, a branch and the first shut-off valve (L9) are connected to an escape pipe crossing, another
Branch is successively via third air flow rate adjustment valve (10), the second air flow rate adjustment valve (H7), the second air-fused salt heat exchanging
Liang Ge branch is again split into after device (H3), a branch and the second shut-off valve (H9) are connected to an escape pipe crossing, another
Branch connect via the 4th air flow rate adjustment valve (9) with electric heater (11), as an escape pipe crossing.
2. a kind of wind tunnel system for realizing that operating condition continuously changes using fused salt storage heat-releasing device described in accordance with the claim 1,
It is characterized in that, low-temperature zone circuit: with mixed nitrate for storage heat release working medium.
3. a kind of wind tunnel system for realizing that operating condition continuously changes using fused salt storage heat-releasing device described in accordance with the claim 1,
Be characterized in that, high temperature section circuit: the storage heat release working medium selected is mixed carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822169492.3U CN209445866U (en) | 2018-12-21 | 2018-12-21 | It is a kind of to store the wind tunnel system that heat-releasing device realization operating condition continuously changes using fused salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822169492.3U CN209445866U (en) | 2018-12-21 | 2018-12-21 | It is a kind of to store the wind tunnel system that heat-releasing device realization operating condition continuously changes using fused salt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209445866U true CN209445866U (en) | 2019-09-27 |
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ID=68014953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822169492.3U Active CN209445866U (en) | 2018-12-21 | 2018-12-21 | It is a kind of to store the wind tunnel system that heat-releasing device realization operating condition continuously changes using fused salt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209445866U (en) |
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2018
- 2018-12-21 CN CN201822169492.3U patent/CN209445866U/en active Active
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