CN219146031U

CN219146031U - Heat reservoir for phased array radar heat dissipation

Info

Publication number: CN219146031U
Application number: CN202223494102.2U
Authority: CN
Inventors: 黄江常; 刘利杰; 张怡雪; 郭明凯; 王志忠
Original assignee: Beijing Huahang Radio Measurement Research Institute
Current assignee: Beijing Huahang Radio Measurement Research Institute
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-06-06
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to a heat reservoir for phased array radar heat dissipation, belongs to the technical field of radar heat control, and solves the problem that cooling liquid needs to be cooled again when cooling liquid is adopted to cool a radar system in the prior art. The heat reservoir of the present utility model comprises: the heat accumulator comprises a heat accumulator shell, a heat exchange pipeline and a phase change material; the heat exchange pipeline is arranged inside the heat reservoir shell, and the phase change material is filled between the heat reservoir shell and the heat exchange pipeline; the heat exchange pipeline comprises: a water inlet pipe, a branch pipeline and a water outlet pipe; the branch pipeline is provided with a plurality of branch pipelines which are mutually connected in parallel. The heat reservoir of the utility model realizes the re-cooling of the cooling liquid after heat absorption by arranging the phase change material and the heat exchange pipeline.

Description

Heat reservoir for phased array radar heat dissipation

Technical Field

The utility model relates to the technical field of radar thermal control, in particular to a heat reservoir for phased array radar heat dissipation.

Background

The phased array radar seeker has the outstanding advantages of anti-stealth, anti-interference and the like, and is the key point and the hot point of the current research of the precise guidance technology at home and abroad. The radar seeker system is rapidly developed towards high integration, ultra wideband, multifunction and intellectualization. Phased array radars are classified into active and passive types, where active phased array radars perform several orders of magnitude higher than passive phased array radars, with higher reliability. The active phased array antenna is characterized by a transmitting/receiving (T/R) module, wherein the T/R module of each radiating element performs power amplification when transmitting signals, performs low-noise amplification when receiving signals, and performs phase-shifting control of beam control. However, with the high integration of electronic components, the power of the T/R module is increasing, and the amount of heat generated is rapidly increasing.

The temperature of the T/R assembly in a narrow space rises instantaneously during the flight of the aircraft. The high temperature of the equipment easily causes the amplitude-phase characteristics of the phased array antenna to drift, and the high temperature and the temperature difference between components are extremely easy to cause hardware faults. The peak power and the transmit duty cycle (the ratio of the length of the energized operation to the total length of time) of the phased array T/R assembly during operation are severely limited in order to avoid performance instability due to overheating. Temperature control is increasingly becoming a common bottleneck problem restricting the development of phased array radars.

The T/R assembly cannot transfer heat outside the cabin to dissipate heat due to the fact that the air is limited by the closed environment of the aircraft, the aircraft continuously develops towards the supersonic speed direction, and the cabin is heated by air through the pneumatic heating effect, so that the T/R heat dissipation condition is more severe. On the other hand, the radar is limited by the limitation of a narrow space of an aircraft platform, the radar structure design is very compact, and the space reserved for a thermal control system is very limited.

The existing T/R thermal control scheme mostly adopts a thermal control means of sensible heat of a radar structural member and latent heat of a phase change material, and the temperature control is realized by absorbing heat of a T/R component through the material. However, the passive heat storage technology is limited by factors such as material heat conductivity, heat conduction path and the like, so that the temperature uniformity is poor, and the main problem of heat control is changed into a heat transfer problem along with the improvement of T/R heating density. Because the heat transfer resistance is too large, the phase change material has not started to change the phase to absorb heat and the T/R chip is overtemperature.

The active liquid cooling technology performs heat exchange by forced convection of liquid working medium, and can transfer heat for a long distance, so that the active liquid cooling technology becomes a main heat dissipation choice of modern electronic equipment. However, the cooling liquid is limited by a narrow space, and after absorbing the heat of the T/R component, the cooling liquid often does not cool until the next liquid cooling cycle, and the heat dissipation efficiency is affected due to the fact that the circulation temperature of the cooling liquid is not low enough, so that the heat dissipation of the chip is not facilitated.

Therefore, it is desirable to provide a heat reservoir that improves the heat dissipation effect on phased array radars.

Disclosure of Invention

In view of the above analysis, the present utility model aims to provide a heat reservoir for phased array radar heat dissipation, which is used for solving the problems that the heat exchange of the heat reservoir structure of the existing radar liquid cooling system to the cooling liquid after heat absorption is insufficient, and the temperature of the cooling liquid is reduced to a desired temperature.

The aim of the utility model is mainly realized by the following technical scheme:

a heat reservoir for phased array radar heat dissipation, the heat reservoir comprising a heat reservoir housing, a heat exchange tube, and a phase change material; the heat exchange pipeline is arranged inside the heat reservoir shell, and the phase change material is filled between the heat reservoir shell and the heat exchange pipeline; the heat exchange pipeline comprises a water inlet pipe, a branch pipeline and a water outlet pipe; the branch pipeline is provided with a plurality of branch pipelines which are mutually connected in parallel.

Further, the heat exchange pipeline further comprises: a water distribution tray and a water collection tray; a water distribution disc is arranged at one end of the water inlet pipe extending into the heat reservoir shell, and a water collecting disc is arranged at one end of the water outlet pipe extending into the heat reservoir shell; one end of the branch pipeline is connected with the water distribution disc, and the other end of the branch pipeline is connected with the water collection disc.

Further, the water diversion disc and the water collecting disc are identical in structure, and the water diversion disc and the water collecting disc are both disc-shaped structures.

Further, a plurality of water diversion holes are formed in the circular arc-shaped wall surface of the outer side of the water diversion disk, and the water diversion holes are uniformly distributed in the circumferential direction of the water diversion disk; the water diversion hole is used for connecting one end of the branch pipeline.

Further, a plurality of water collecting holes are formed in the circular arc-shaped wall surface of the outer side of the water collecting disc, and the water collecting holes are uniformly distributed in the circumferential direction of the water collecting disc; the water collecting hole is used for being connected with the other end of the branch pipeline.

Further, the heat exchange pipeline and the phase change material are both arranged in the heat reservoir shell; the heat exchange pipeline can be communicated with the circulating pump and the liquid cooling device through the connecting pipeline; the phase change material can be used for absorbing heat of the cooling liquid flowing inside the heat exchange pipeline.

Further, the branch pipeline is of a C-shaped metal pipe structure.

Further, the main body part of the branch pipeline is a spiral pipe, the two ends of the branch pipeline are straight pipes, and the branch pipeline is communicated with the water distributing disc and the water collecting disc through the straight pipes at the two ends.

Further, one end of the water inlet pipe extending out of the heat reservoir shell is communicated with the circulating pump through a connecting pipeline.

Further, one end of the water outlet pipe extending out of the heat reservoir shell is communicated with the liquid cooling device through a connecting pipeline.

The technical scheme of the utility model can at least realize one of the following effects:

1. according to the heat reservoir for phased array radar heat dissipation, the plurality of parallel branch pipelines are arranged, so that the cooling liquid heated by the liquid cooling device is split into the plurality of branch pipelines to exchange heat with the phase change material, the heat exchange efficiency is improved, and the temperature of the cooling liquid after heat exchange is ensured to be low enough so as to be convenient for the next circulation heat dissipation flow. The heat reservoir of the utility model realizes the re-cooling of the cooling liquid after heat absorption by arranging the phase change material and the heat exchange pipeline.

2. According to the heat reservoir for phased array radar heat dissipation, the water inlet pipe and the water outlet pipe are respectively arranged at two ends, and the plurality of heat reservoirs can be connected in series or in parallel and then connected into the liquid cooling system for use and can be used for absorbing heat generated by the phased array radar.

In the utility model, the technical schemes can be mutually combined to realize more preferable combination schemes. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, like reference numerals being used to refer to like parts throughout the several views.

Fig. 1 is a schematic structural diagram of a heat reservoir;

FIG. 2 is a cross-sectional effect diagram of the heat reservoir;

FIG. 3 is a schematic diagram of the heat exchange lines inside the heat reservoir;

FIG. 4 illustrates the use of the heat reservoir for phased array radar heat dissipation of the present utility model in a liquid cooling system;

fig. 5 is a schematic diagram of the use of multiple parallel heat reservoirs for phased array radar heat dissipation in a liquid cooling system according to the present utility model.

Reference numerals:

1-a temperature equalizing plate; 2-embracing the ring; a 3-T/R assembly; 4-T/R cold plate; 5-a circulation pump; 6-a heat reservoir; 7-connecting pipelines; 61-a first heat reservoir; 62-a second heat reservoir; 63-a third heat reservoir; 601-a heat reservoir housing; 602-a water inlet pipe; 603-a water outlet pipe; 604-a water distribution tray; 605-a water collecting disc; 606-branch line.

Detailed Description

The following detailed description of preferred embodiments of the utility model is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the utility model, are used to explain the principles of the utility model and are not intended to limit the scope of the utility model.

Example 1

In one embodiment of the present utility model, a heat reservoir for phased array radar heat dissipation is provided, as shown in fig. 1 and 2, the heat reservoir 6 includes: a heat reservoir housing 601, heat exchange lines and phase change material. The heat exchange pipeline and the phase change material are both arranged inside the heat reservoir shell 601; as shown in fig. 3, the heat exchange pipeline includes: a water inlet pipe 602, a water outlet pipe 603, a water diversion plate 604, a water collection plate 605 and a branch pipe 606; the water inlet pipe 602 is communicated with the circulating pump 5 through a connecting pipeline 7; the water outlet pipe 603 is communicated with the liquid cooling device through a connecting pipeline 7. The heat exchange pipeline can be communicated with the circulating pump 5 and the liquid cooling device through the connecting pipeline 7; the phase change material is used for absorbing heat of cooling liquid in the heat exchange pipeline.

As shown in fig. 2, a water distributing disc 604 is disposed at the end of the water inlet pipe 602 extending into the heat reservoir, and a water collecting disc 605 is disposed at the end of the water outlet pipe 603 extending into the heat reservoir.

As shown in fig. 2, the water diversion plate 604 and the water collection plate 605 have the same structure, and the water diversion plate 604 and the water collection plate 605 have disc-shaped structures.

Further, as shown in FIG. 3, the diverter trays 604 and catchment trays 605 are in communication with a plurality of branch lines 606 simultaneously; a plurality of branch pipes 606 are connected in parallel, one end of each branch pipe 606 is connected with the water diversion plate 604, and the other end is connected with the water collection plate 605.

Specifically, a plurality of water diversion holes are formed on the circular arc wall surface of the outer side of the water diversion disk 604, and the plurality of water diversion holes are uniformly distributed in the circumferential direction of the water diversion disk 604; a plurality of water collecting holes are formed in the circular arc-shaped wall surface of the outer side of the water collecting disc 605, and the water collecting holes are uniformly distributed in the circumferential direction of the water collecting disc 605; the water diversion holes and water collection holes are used to connect with both ends of the branch pipe 606.

Specifically, branch pipe 606 has one end connected to the water diversion hole and the other end connected to the water collection hole.

And a plurality of branch lines 606 are disposed in parallel between the diverter tray 604 and the catchment tray 605.

In implementation, the cooling liquid after heat exchange and temperature rise with the holding ring 2, the temperature equalizing plate 1 and the T/R cold plate 4 flows into the heat reservoir through the 5 water inlet pipe 602, the cooling liquid is split into a plurality of branch pipelines 606 through the water dividing disc 604 at the tail end of the water inlet pipe 602, the cooling liquid flows in the branch pipelines 606 to exchange heat with the phase change material, and the low-temperature cooling liquid after heat exchange is converged by the water collecting disc 605 and flows out through the water outlet pipe 603, and then flows into the liquid cooling device to perform circulating heat dissipation.

In the utility model, the plurality of branch pipelines 606 are arranged to shunt the 0 cooling liquid heated by the liquid cooling device to the plurality of branch pipelines 606 to exchange heat with the phase change material, thereby improving the heat exchange efficiency,

the temperature of the cooling liquid after heat exchange is ensured to be low enough so as to carry out the next circulation heat dissipation flow.

In one embodiment of the present utility model, the branch pipe 606 is a C-shaped metal pipe structure, as shown in FIG. 3.

Alternatively, the main body of the branch pipe 606 is a spiral pipe, two ends of the branch pipe 6065 are straight pipes, and the branch pipe 606 is communicated with the water diversion plate 604 and the water collection plate 605 through the straight pipes at the two ends.

The heat storage device 6 is provided with the water inlet pipe 602 and the water outlet pipe 603 at two ends respectively, and a plurality of heat storage devices 6 can be connected in series or in parallel and then connected into a liquid cooling system for use, and can be used for absorbing heat generated by a phased array radar, as shown in fig. 4.

0, as shown in fig. 5, the heat reservoirs 6 of the present utility model can be used in parallel, and by setting three sets of valve structures, by adjusting the opening and closing of the three sets of valves, one or more heat reservoirs 6 can be adjusted to be connected to the circulation path according to the actual heat dissipation requirement, and the heat storage effect of the heat reservoirs 6 is adjusted, so that the effective heat exchange of the phased array radar is realized.

Further, when the heat reservoirs 6 are arranged for parallel use, the heat reservoirs 6 are provided with three, 5 being a first heat reservoir 61, a second heat reservoir 62 and a third heat reservoir 63, respectively. The first, second and

third heat reservoirs

61, 62 and 63 are identical in structure. The first, second and

third heat reservoirs

61, 62 and 63 are connected in parallel and then connected to the circulation path. Both ends of the first heat reservoir 61, the second heat reservoir 62 and the third heat reservoir 63 are provided with a liquid inlet valve and a liquid outlet valve; by controlling the opening and closing of the liquid inlet valve and the liquid outlet valve, different heat reservoirs can be switched to be connected to the circulating passage.

Specifically, two ends of the first heat reservoir 61 are respectively provided with a first liquid inlet valve and a first liquid outlet valve; a second liquid inlet valve and a second liquid outlet valve are respectively arranged at two ends of the second heat reservoir 62; a third liquid inlet valve and a third liquid outlet valve are respectively arranged at two ends of the third heat reservoir 63. When the first liquid inlet valve and the first liquid outlet valve are opened, and other valves are closed, the first heat reservoir 61 can be connected to a liquid cooling system; similarly, when the second liquid inlet valve and the second liquid outlet valve are opened and the other valves are closed, the second heat reservoir 62 can be connected to the liquid cooling system; the third liquid inlet valve and the third liquid outlet valve are opened, and when other valves are closed, the third heat reservoir 63 can be connected to the liquid cooling system.

As shown in fig. 4 and 5, when the heat reservoir 6 of the present utility model is connected to a liquid cooling circulation system, the liquid cooling device, the circulation pump 5, and the heat reservoir 6 are sequentially connected to form a circulation path. Specifically, as shown in fig. 4, a holding ring 2 is arranged at the periphery of the T/R assembly 3, and a temperature equalizing plate 1 is arranged above the T/R assembly 3; an inner plate flow passage is arranged in the T/R cold plate 4, and a plurality of rows of parallel temperature equalizing flow passages are arranged in the temperature equalizing plate 1; the uniform temperature runner and the in-plate runner are connected in parallel and are communicated with the in-ring runner of the holding ring 2; the holding ring 2 is communicated with the circulating pump 5 and the heat reservoir 6 through a connecting pipeline 7 and forms a circulating passage.

According to the utility model, through the cooling liquid flowing between the flow channel in the liquid cooling device and the heat exchange pipeline of the heat reservoir, when the cooling liquid flows through the temperature equalizing flow channel of the temperature equalizing plate 1 and the in-plate flow channel of the T/R cold plate 4, the cooling liquid can exchange heat with the high-temperature T/R assembly 3, so that the cooling and heat dissipation of the plurality of groups of T/R assemblies 3 are realized, and the direct cooling of the T/R assembly 3 is realized. In practice, in the closed circulation path, the circulation pump 5 powers the liquid cooling system to circulate fluid between the T/R cold plate 4 and the heat reservoir 6. The cooling liquid flows through the T/R cold plate 4 to carry heat generated by the T/R assembly 3, and the temperature of the cooling liquid rises; the heated cooling liquid flows out of the T/R cold plate 4 and flows into the heat reservoir 6, the heat reservoir 6 absorbs heat, and the temperature of the cooling liquid is reduced; the cooling liquid after heat exchange flows into the T/R cold plate 4 again for heat exchange, so that the circulation of flowing heat exchange is realized.

Notably, are: for the purpose of illustrating the technical solution of this embodiment, the circulating pump 5, the T/R cold plate 4, the holding ring 2, the T/R assembly 3, the temperature equalizing plate 1, the connecting pipe 7, and the like according to the present utility model are all intended to illustrate the use principle of the technical solution of the present utility model, but are not intended to limit the scope of protection of the present utility model.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.

Claims

1. A heat reservoir for phased array radar heat dissipation, characterized in that the heat reservoir comprises a heat reservoir housing (601), heat exchange lines and phase change material; the heat exchange pipeline is arranged inside the heat reservoir shell, and the phase change material is filled between the heat reservoir shell (601) and the heat exchange pipeline; the heat exchange pipeline comprises a water inlet pipe (602), a branch pipeline (606) and a water outlet pipe (603); the branch pipelines (606) are provided with a plurality of branch pipelines which are connected in parallel.

2. The heat reservoir for phased array radar heat dissipation of claim 1, wherein the heat exchange circuit further comprises: a water distribution tray (604) and a water collection tray (605); one end of the water inlet pipe (602) extending into the heat reservoir shell (601) is provided with a water distributing disc (604), and one end of the water outlet pipe (603) extending into the heat reservoir shell (601) is provided with a water collecting disc (605); one end of the branch pipeline (606) is connected with the water diversion disk (604), and the other end is connected with the water collection disk (605).

3. The heat reservoir for phased array radar heat dissipation according to claim 2, characterized in that the water diversion plate (604) and the water collection plate (605) are identical in structure, and the water diversion plate (604) and the water collection plate (605) are both disc-shaped in structure.

4. A heat reservoir for phased array radar heat dissipation according to claim 3 wherein a plurality of water diversion holes are provided on the circular arc wall surface of the outside of the water diversion disk (604), the plurality of water diversion holes being uniformly distributed in the circumferential direction of the water diversion disk (604); the water diversion holes are used for connecting one end of the branch pipeline (606).

5. The heat reservoir for phased array radar heat dissipation according to claim 4, wherein a plurality of water collecting holes are provided on the circular arc wall surface of the outer side of the water collecting disc (605), and the plurality of water collecting holes are uniformly distributed in the circumferential direction of the water collecting disc (605); the water collection hole is used for being connected with the other end of the branch pipeline (606).

6. The heat reservoir for phased array radar heat dissipation according to claim 5, characterized in that the heat exchange line and phase change material are both arranged inside the heat reservoir housing (601); the heat exchange pipeline can be communicated with the circulating pump (5) and the liquid cooling device through the connecting pipeline (7); the phase change material can be used for absorbing heat of the cooling liquid flowing inside the heat exchange pipeline.

7. Heat reservoir for phased array radar heat dissipation according to any of claims 1-6, characterized in that the branch pipes (606) are C-shaped metal pipe structures.

8. A heat reservoir for phased array radar heat dissipation according to any of claims 1-6, characterized in that the main part of the branch pipe (606) is a spiral pipe, the two ends of the branch pipe (606) are straight pipes, and the branch pipe (606) is communicated with the water diversion plate (604) and the water collection plate (605) through the straight pipes at the two ends.

9. The heat reservoir for phased array radar heat dissipation according to claim 7, characterized in that the end of the water inlet pipe (602) extending out of the heat reservoir housing (601) is in communication with the circulation pump (5) via a connecting line (7).

10. The heat reservoir for phased array radar heat dissipation according to claim 9, wherein the end of the water outlet pipe (603) extending out of the heat reservoir housing (601) is communicated with the liquid cooling device through a connecting pipeline (7).