CN218156590U - Laminated labyrinth micro-channel cooling micro water-card calorimeter - Google Patents
Laminated labyrinth micro-channel cooling micro water-card calorimeter Download PDFInfo
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- CN218156590U CN218156590U CN202221916214.XU CN202221916214U CN218156590U CN 218156590 U CN218156590 U CN 218156590U CN 202221916214 U CN202221916214 U CN 202221916214U CN 218156590 U CN218156590 U CN 218156590U
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Abstract
The utility model discloses a miniature water card calorimeter of stromatolite maze miniflow path cooling, include: the device comprises a cooling water inlet connecting pipe nozzle, a radiation type micro connecting part, a heated part, a cooling water outlet connecting pipe nozzle and a temperature thermocouple; wherein, the heated part is provided with a central channel, a top channel and a laminated labyrinth cooling channel; the radiation type micro connecting part is arranged in the middle of the top channel and provided with a plurality of radiation type micro connecting channels; one end of the central channel is communicated with the top channel through a plurality of radiation type miniature connecting channels, and the top channel is communicated with the laminated labyrinth cooling channel; the inner channel of the cooling water inlet pipe connecting nozzle is communicated with the other end of the central channel; the internal channel of the cooling water inlet filler neck is communicated with the laminated labyrinth cooling channel; the temperature thermocouple is arranged at the water outlet end of the laminated labyrinth cooling channel. The utility model provides a high heat flow test difficult problem at sharp-pointed positions such as flight stagnation point, wing leading edge.
Description
Technical Field
The utility model belongs to the technical field of thermal current test under the high temperature environment, especially, relate to a miniature water card calorimeter of stromatolite maze microchannel cooling.
Background
The pneumatic heating environment of the hypersonic aircraft is an important input parameter for the development of an aircraft thermal protection system, and the pneumatic environment is extremely severe, so that the high-precision test of the heat flow has a large error all the time, and particularly in a high-heat-flow area of an aircraft stagnation point and a wing front edge, a micro calorimeter is needed for measuring the heat flow. The existing micro calorimeter is a heat sink type calorimeter, but the heat sink type calorimeter is very easy to damage under a high-temperature environment. And the pneumatic heating environment of the hypersonic aircraft is very severe, the highest temperature of the airflow can reach ten thousands of degrees, and meanwhile, the mechanical scouring of the high-speed airflow exists, so that the continuous and accurate measurement of the heat flow is a great technical problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: the defects of the prior art are overcome, the laminated labyrinth micro-channel cooling micro water-card calorimeter is provided, and the problem of high heat flow test of sharp parts such as a flight stagnation point, a wing front edge and the like is solved.
The utility model discloses the purpose is realized through following technical scheme: a laminated labyrinth microchannel cooled micro water entrapment calorimeter comprising: the device comprises a cooling water inlet connecting pipe nozzle, a radiation type micro connecting part, a heated part, a cooling water outlet connecting pipe nozzle and a temperature thermocouple; the heating part is provided with a central channel, a top channel and a laminated labyrinth cooling channel; the radiation type micro connecting part is arranged in the middle of the top channel, and a plurality of radiation type micro connecting channels are formed in the radiation type micro connecting part; one end of the central channel is communicated with the top channel through a plurality of radiation type miniature connecting channels, and the top channel is communicated with the laminated labyrinth type cooling channel; the cooling water inlet filler neck is connected with the heated component, and an internal channel of the cooling water inlet filler neck is communicated with the other end of the central channel; the cooling water outlet filler neck is connected with the heated part, and an internal passage of the cooling water inlet filler neck is communicated with the laminated labyrinth cooling passage; the temperature thermocouple is arranged at the water outlet end of the laminated labyrinth cooling channel.
In the laminated labyrinth micro-channel cooling micro water-calorie calorimeter, the length direction of the central channel is perpendicular to the length direction of the top channel.
In the laminated labyrinth micro-channel cooling micro water-card calorimeter, a plurality of radiation type micro connecting channels are in a radial shape.
In the laminated labyrinth micro-channel cooling micro water card calorimeter, the included angles of two adjacent radiation type micro connecting channels are equal.
In the laminated labyrinth micro-channel cooling micro water-card calorimeter, the heated part is cylindrical.
In the laminated labyrinth micro-channel cooling micro water-card calorimeter, one end of the central channel is positioned in the center of the top channel.
In the laminated labyrinth micro-channel cooling micro water-calorie meter, the central line of the internal channel of the cooling water inlet connecting pipe nozzle coincides with the central line of the central channel.
In the laminated labyrinth micro-channel cooling micro water-card calorimeter, the length direction of the cooling water inlet connecting pipe nozzle is vertical to the length direction of the cooling water outlet connecting pipe nozzle.
Compared with the prior art, the utility model following beneficial effect has:
(1) The utility model greatly improves the flow velocity and the heat exchange area of the cooling water, thereby effectively improving the measuring range of the calorimeter;
(2) The utility model discloses a temperature thermocouple installs in cooling water outlet channel, can effectively reduce export temperature test error, improves thermal current measuring accuracy.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of a stacked labyrinth micro-channel cooling micro water-card calorimeter according to an embodiment of the present invention;
fig. 2 is a top view of a heated component and a radial micro-connector component provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
FIG. 1 is a schematic structural diagram of a laminated labyrinth micro-channel cooling micro water-card calorimeter provided by an embodiment of the present invention; fig. 2 is a plan view of a heated component and a radiant micro-connecting component according to an embodiment of the present invention. As shown in fig. 1 and 2, the laminated labyrinth micro flow channel cooling micro water calorie calorimeter includes: a cooling water inlet connecting pipe nozzle 1, a radiation type micro connecting part 2, a heated part 3, a cooling water outlet connecting pipe nozzle 5 and a temperature thermocouple 6. Wherein, the first and the second end of the pipe are connected with each other,
the heated part 3 is provided with a central channel 31, a top channel 32 and a laminated labyrinth cooling channel 4; the radiation type micro connecting part 2 is arranged in the middle of the top channel 32, and the radiation type micro connecting part 2 is provided with a plurality of radiation type micro connecting channels 21; one end of the central channel 31 is communicated with the top channel 32 through a plurality of radial micro-connecting channels, and the top channel 32 is communicated with the laminated labyrinth cooling channel 4; the cooling water inlet filler neck 1 is connected with the heated component 3, an internal channel of the cooling water inlet filler neck 1 is communicated with the other end of the central channel 31, and the cooling water inlet filler neck 1 is arranged at the bottom of the heated component 3; the cooling water outlet filler neck 5 is connected with the heated part 3, an internal channel of the cooling water inlet filler neck 1 is communicated with the laminated labyrinth cooling channel 4, and the cooling water outlet filler neck 5 is arranged on the side wall of the heated part 3; the temperature thermocouple 6 is arranged at the water outlet end of the laminated labyrinth cooling channel 4. Further, the length direction of the central channel 31 is perpendicular to the length direction of the top channel 32. The plurality of radiation type miniature connecting channels are radial, and the included angles of two adjacent radiation type miniature connecting channels are equal. The heated member 3 is cylindrical. One end of the central channel 31 is located in the center of the top channel 32. The center line of the internal passage of the cooling water inlet filler neck 1 coincides with the center line of the central passage 31. The longitudinal direction of the cooling water inlet filler neck 1 is perpendicular to the longitudinal direction of the cooling water outlet filler neck 5.
The top of the heated part 3 is connected with sharp parts such as a flying stagnation point, a wing front edge and the like, so that a high heat flow test is completed.
As shown in fig. 1, the water inlet channel is a central water inlet mode, the cross section of the channel is circular or in other shapes, cooling water is directly sent to the inner surface of the heated surface through the water inlet channel, then is led to the cooling channel through the change direction of the radiation-type micro connecting hole, the cooling channel is a laminated labyrinth cooling structure formed by the combination of a micro groove and a micro hole, finally the cooling water flows out of the calorimeter through the water outlet channel, the front end of the water outlet channel of the calorimeter is provided with a temperature measuring hole, a temperature measuring thermocouple is arranged in the calorimeter to obtain the temperature rise of the cooling water, and the heating heat flow of the heated surface is calculated through the following formula:
wherein Q is heat flow KW/m 2 ，G W The flow rate of cooling water is Kg/s, cp is the specific heat capacity KJ/(Kg. DEG C) of the cooling water, delta T is the temperature rise DEG C of the cooling water, A is the area m of the heated surface 2 。
The radiation type miniature connecting channel and the laminated labyrinth type cooling channel 4 jointly form a cooling heat exchange area, and the relation between the heat exchange area and the test heat flow is as follows:
Q＝F(d,l)·α(d,l,G)·ΔT；
wherein F (d, l) is the heat exchange area of the cooling channel, and F (d, l) is a function of the channel diameter d and the channel length l; α (d, l, G) is the heat transfer coefficient, α (d, l, G) is a function of the channel diameter d, channel length l, and cooling water flow rate G; Δ T is the cooling water temperature rise.
In the cylinder body, a laminated labyrinth micro-channel structure is adopted, and the cooling effect can reach 40000KW/m to the maximum extent 2 The heat flow measurement range can cover 100KW/m 2 ～40000KW/m 2 。
The cooling structure adopts the combination of a radiation type micro connecting channel and a laminated labyrinth type cooling channel, which can ensure that the surface temperature of the calorimeter is below 600K, realize the temperature rise of cooling water to reach sufficient sensitivity, and simultaneously realize the pressure of the cooling water below 2 MPa. The laminated labyrinth cooling channel greatly increases the cooling and heat exchange area.
The diameter of the calorimeter is 5mm, and the area of the heating surface is 1.9625e-5m 2 The cooling water flow is 6e-3Kg/s, the cooling water temperature is 23.4 ℃, and the heat flow value is 30000KW/m 2 . The temperature of the heating surface is 480K.
The micro water-card calorimeter adopting laminated labyrinth micro-channel cooling can reach 30000KW/m 2 The device can work safely in an extremely high heat flow environment, and the temperature of the heating surface can be controlled to be within 500K.
The utility model discloses a radiant type miniature connecting hole and stromatolite labyrinth cooling channel's design has effectively improved cooling channel's heat transfer area, has increased heat transfer coefficient to under the certain condition of cold water flow, increased the cooling water temperature rise, thereby effectively improved the measuring range of calorimeter. The utility model discloses a temperature thermocouple installs in cooling water outlet channel, can effectively reduce export temperature test error, improves thermal current measuring accuracy.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can use the method and technical contents disclosed above to make possible changes and modifications to the technical solution of the present invention without departing from the spirit and scope of the present invention, therefore, any simple modifications, equivalent changes and modifications made to the above embodiments by the technical substance of the present invention are all within the protection scope of the technical solution of the present invention.
Claims (8)
1. A laminated labyrinth micro-channel cooling micro water-card calorimeter is characterized by comprising: a cooling water inlet connecting pipe nozzle (1), a radiation type micro connecting part (2), a heated part (3), a cooling water outlet connecting pipe nozzle (5) and a temperature thermocouple (6); wherein, the first and the second end of the pipe are connected with each other,
the heating part (3) is provided with a central channel (31), a top channel (32) and a laminated labyrinth cooling channel (4); wherein, the first and the second end of the pipe are connected with each other,
the radiation type micro connecting component (2) is arranged in the middle of the top channel (32), and a plurality of radiation type micro connecting channels are formed in the radiation type micro connecting component (2);
one end of the central channel (31) communicates with the top channel (32) through a plurality of radial micro-connecting channels, the top channel (32) communicates with the laminated labyrinth cooling channel (4);
the cooling water inlet filler neck (1) is connected with the heated component (3), and an internal channel of the cooling water inlet filler neck (1) is communicated with the other end of the central channel (31);
the cooling water outlet filler neck (5) is connected with the heated part (3), and an internal channel of the cooling water inlet filler neck (1) is communicated with the laminated labyrinth cooling channel (4);
the temperature thermocouple (6) is arranged at the water outlet end of the laminated labyrinth cooling channel (4).
2. The laminated labyrinth micro-fluidic channel cooled micro water calorie calorimeter of claim 1, wherein: the length direction of the central channel (31) is perpendicular to the length direction of the top channel (32).
3. The laminated labyrinth micro-fluidic channel cooled micro water calorie calorimeter of claim 1, wherein: the plurality of radial miniature connecting channels are radial.
4. The laminated labyrinth micro-fluidic channel cooling micro water calorie meter of claim 1, wherein: the included angles of two adjacent radiation type miniature connecting channels are equal.
5. The laminated labyrinth micro-fluidic channel cooled micro water calorie calorimeter of claim 1, wherein: the heated part (3) is cylindrical.
6. The laminated labyrinth micro-fluidic channel cooled micro water calorie calorimeter of claim 1, wherein: one end of the central channel (31) is located in the center of the top channel (32).
7. The laminated labyrinth micro-fluidic channel cooled micro water calorie calorimeter of claim 1, wherein: the central line of the internal channel of the cooling water inlet filler neck (1) is coincident with the central line of the central channel (31).
8. The laminated labyrinth micro-fluidic channel cooled micro water calorie calorimeter of claim 1, wherein: the length direction of the cooling water inlet filler neck (1) is vertical to the length direction of the cooling water outlet filler neck (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221916214.XU CN218156590U (en) | 2022-07-22 | 2022-07-22 | Laminated labyrinth micro-channel cooling micro water-card calorimeter |
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| CN202221916214.XU CN218156590U (en) | 2022-07-22 | 2022-07-22 | Laminated labyrinth micro-channel cooling micro water-card calorimeter |
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