CN112635952B - Liquid-cooled phased array antenna and cooling method thereof - Google Patents

Abstract

The invention relates to a liquid cooling phased array antenna and a cooling method thereof, belongs to the technical field of phased array antennas, and solves the problem that the antenna performance is influenced by the temperature rise of an antenna array surface due to the large heat flux density of the antenna array surface of the phased array antenna in the prior art. The liquid-cooled phased array antenna of the present invention includes: the antenna comprises an antenna disc, a TR component, a radio frequency coaxial connector and a liquid cooling system; the liquid cooling system comprises a liquid cold source, a liquid inlet pipeline, a liquid cooling plate and a liquid return pipeline which are connected in sequence; the liquid cooling source is used for providing cooling liquid required by cooling heat exchange; the liquid inlet pipeline and the liquid return pipeline respectively realize the injection of cooling liquid into the liquid cooling plate and the backflow of the cooling liquid; antenna dish, TR subassembly, radio frequency coaxial connector all install on the liquid cooling board, carry out cooling heat dissipation to phased array antenna through the coolant liquid in the liquid cooling board. The invention realizes the rapid and uniform heat dissipation of the phased array antenna.

Description

Liquid-cooled phased array antenna and cooling method thereof

Technical Field

The invention relates to the technical field of phased array antennas, in particular to a liquid-cooled phased array antenna and a cooling method thereof.

Background

The active phased array antenna is more and more widely applied to civil use, and hundreds of T/R components are distributed on one antenna array surface. In the environment of an aircraft, the arrangement is compact, the heat dissipation space is small, the system integration coupling degree is high, the heat flow density of an antenna array surface is high, if the heat cannot be taken away from the antenna array surface in time, the temperature of the antenna array surface is increased, the performance of a T/R assembly is reduced and even fails, the electrical performance of the antenna is affected, and the performance of a radar is deteriorated. Therefore, the thermal design of the active phased array antenna is directly related to the electrical performance index of the antenna, and finally influences the detection, tracking and other performances of the active phased array radar.

The liquid cooling plate technology utilizes the liquid in the cavity of the liquid cooling device to perform forced convection heat exchange with the cavity, and uses continuous liquid supply and heat dissipation to dissipate heat of the heat dissipation source, thereby dissipating heat of the heating device. The heat transfer coefficient of the liquid cooling working medium is more than 20 times of that of air, so that forced liquid cooling is usually used under the condition of large heat flow density. The advantage of forced liquid cooling is that heat dispersion is comparatively even, and the radiating efficiency is high.

The space of the radar of the aircraft is special and narrow, the array element spacing of the phased array antenna must meet the constraints of half-wavelength design and the like, and the number of receiving and transmitting channels of the common-caliber dual-frequency dual-polarized antenna is required to be increased by 2-4 times under the condition that the space volume is severely limited, so that the difficulties of space arrangement design, high-integration density connection, high-power heat consumption and the like are increased rapidly. Nearly thousands of radio frequency connectors need to be arranged in the antenna with the diameter of 230mm, the total heating power of the phased array antenna can reach more than 3000W, and the structural design of the phased array antenna needs to meet the requirements of structural strength, rigidity, heat dissipation, connection reliability, maintainability and the like.

Disclosure of Invention

In view of the above analysis, the present invention aims to provide a liquid-cooled phased array antenna and a cooling method thereof, so as to solve the problem that the heat flux density of the antenna front of the conventional phased array antenna is large, and if the heat cannot be taken away from the antenna front in time, the temperature of the antenna front rises, so that the performance of the T/R module is reduced or even failed, and the electrical performance of the antenna is affected.

The purpose of the invention is mainly realized by the following technical scheme:

a liquid-cooled phased array antenna, comprising: the antenna comprises an antenna disc, a TR component, a radio frequency coaxial connector and a liquid cooling system; the liquid cooling system comprises a liquid cold source, a liquid inlet pipeline, a liquid cooling plate and a liquid return pipeline which are connected in sequence; the liquid cooling source is used for providing cooling liquid required by cooling heat exchange; the liquid inlet pipeline is used for injecting cooling liquid into the liquid cooling plate; the liquid return pipeline is used for recovering the cooling liquid after heat exchange in the liquid cooling plate; the liquid cooling plate is provided with a first radio frequency channel for mounting a radio frequency coaxial connector; the antenna disc and the TR component are respectively arranged on the upper surface and the lower surface of the liquid cooling plate and are connected through a radio frequency coaxial connector; the cooling liquid in the liquid cooling plate can cool and radiate the phased array antenna.

Further, the liquid cooling system further includes: a controller; the microcontroller is used for controlling the working state of the liquid cooling system.

Furthermore, the first radio frequency channels are arranged in a plurality of modes, and the first radio frequency channels are distributed on the liquid cooling plate in an array mode.

Further, the first radio frequency channel penetrates through the metal matrix of the liquid cooling plate.

Furthermore, a plurality of antenna radiation units distributed in an array are arranged on the antenna disc; a second radio frequency channel is arranged on the antenna radiation unit; a third radio frequency channel is arranged on the TR component; and two ends of the radio frequency coaxial connector are in signal connection with the antenna radiation unit and the TR component through a second radio frequency channel and a third radio frequency channel.

Furthermore, the antenna disc is fixedly connected with the metal substrate of the liquid cooling plate; and the TR component is provided with a support lug and is fixedly connected with the metal matrix of the liquid cooling plate through the support lug.

Further, the number of the TR assemblies is multiple, and the plurality of the TR assemblies are arranged in parallel.

Furthermore, a support structure is sleeved outside the TR component; the support structure is a cover structure, and the support structure covers the outside of the plurality of TR assemblies.

Further, the support structure is connected with the TR component through screws; and the supporting structure is fixedly connected with the metal matrix of the liquid cooling plate.

A method of cooling a liquid-cooled phased array antenna, comprising the steps of:

step S1: flowing the cooling liquid of the liquid cooling system into the liquid cooling plate;

step S2: cooling and heat exchanging are carried out on the phased array antenna on the liquid cooling plate by the cooling liquid flowing through the liquid cooling plate; the heat exchange process is as follows: the cooling liquid in the liquid cooling plate exchanges heat with the metal matrix; the metal substrate exchanges heat with the antenna disc, the TR component and the radio frequency coaxial connector; the radio frequency coaxial connector exchanges heat with the antenna radiation unit and the TR component to complete cooling of the phased array antenna;

and step S3: and (3) the cooling liquid flows back to the liquid cooling source through the liquid return pipeline, and the steps S1 and S2 are repeated.

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

1. the liquid cooling system of the phased array antenna has the advantages of short heat transfer path, small heat transfer resistance, high heat dissipation efficiency, high structural integration level, reliable connection of the liquid cooling circulating system and better adaptability to environments such as vibration, impact and the like. And monitoring the temperature of the phased array antenna and the state of the liquid cooling pipeline in real time. And according to the temperature and the running state, the flow rate of the cooling liquid and the temperature control mode are adjusted.

2. The liquid cooling plate of the liquid cooling phased array antenna provided by the invention is reliably connected with the liquid cooling circulating system, and has a compact structure and an obvious heat dissipation effect. The structure main body adopts the aluminum alloy as a support, the structure strength is high, the heat exchange area of the liquid cooling plate is large, the heat transfer path between the liquid cooling plate and a heat source is short, and the liquid cooling plate has better adaptability to environments such as vibration, impact and the like, so that the heat dissipation, the connection reliability, the maintainability and the like of the antenna meet the requirements.

3. According to the liquid cooling plate of the liquid cooling phased array antenna, spoilers which penetrate through the cavity and are arranged in disorder are processed in the water diversion cavity and the water collection cavity. The turbulator can ensure that the cooling liquid flows in the cavity in an unordered manner, can promote the cooling liquid to be uniformly distributed to each parallel flow channel, and simultaneously promotes the fluid to enter a turbulent flow state, thereby further improving the heat exchange efficiency between the cooling liquid and the metal cavity.

4. The liquid cooling plate of the liquid cooling phased array antenna is provided with the upper layer of parallel flow channels and the lower layer of parallel flow channels, the heat exchange area between the cooling liquid and the metal substrate is increased through the cooling liquid in the two layers of parallel flow channels, and the heat exchange efficiency is improved.

5. The liquid inlet and outlet joint of the phased array antenna, which is composed of the liquid inlet joint and the liquid outlet joint, has the advantages of compact integral structure, high reliability of connection with a liquid cooling system, good water tightness and simple and labor-saving operation. Meanwhile, the liquid inlet and outlet connector is reliably connected with the liquid cooling circulating system, and the liquid inlet and outlet connector can be suitable for environments such as vibration and impact and has good adaptability.

6. The liquid inlet and outlet joint of the liquid cooling device is easy to pull out and install, the liquid inlet valve block is attached to the liquid outlet channel, the liquid outlet valve block is attached to the circular pushing table, and the outer surface of the metal base of the liquid outlet joint is always in extrusion contact with the elastic external resistance check ring in the processes of inserting, connecting and pulling out the liquid inlet joint and the liquid outlet joint. The liquid inlet and outlet joint provided by the invention has the advantages that liquid leakage is avoided, and the cooling liquid can only flow through the liquid outlet channel and the liquid inlet channel of the metal matrix and cannot seep out of the liquid outlet joint and the liquid inlet joint.

In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention 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 invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings, in which like reference numerals refer to like parts throughout, are for the purpose of illustrating particular embodiments only and are not to be considered limiting of the invention.

FIG. 1 is an exploded view of a liquid cooled phased array antenna of the present invention;

FIG. 2 is a liquid cooling system for a phased array antenna;

FIG. 3 is a bottom view of a liquid cooled phased array antenna of the present invention;

FIG. 4 is a top view of a liquid cooled phased array antenna of the present invention;

FIG. 5 is a cross-sectional view of a liquid cooling system;

FIG. 6 is a first view of a liquid cooled plate;

FIG. 7 is a second view of a liquid cooled plate;

FIG. 8 is a liquid cooled plate and adapter;

FIG. 9 is a transverse cross-sectional view of a liquid cooled plate;

FIG. 10 is a longitudinal cross-sectional view of a liquid cooled panel;

FIG. 11 is a first view of the TR assembly;

FIG. 12 is a second view of the TR assembly;

FIG. 13 is a TR assembly and support structure;

FIG. 14 is an assembled view of the support structure;

FIG. 15 is an exploded view of the support structure;

figure 16 is an adapter;

figure 17 is an adapter half-section configuration;

FIG. 18 is a view showing a structure of a liquid outlet joint;

FIG. 19 is a view of the inlet joint;

FIG. 20 is a perspective view of the movable sleeve;

FIG. 21 is a front view of the movable sleeve;

FIG. 22 is a view showing the use state of the liquid inlet and outlet joint;

fig. 23 is a schematic diagram of a phased array antenna cooling system.

Reference numerals:

1-liquid cooling plate; 2-an antenna disc; a 3-TR module; 4-a radio frequency coaxial connector; 5-sealing ring; 6-adapter; 7-a support structure; 8-liquid inlet and outlet joints; 9-a first liquid-cooled tube; 10-a second liquid-cooled tube;

101-a liquid inlet; 102-a liquid outlet; 103-a first radio frequency channel; 104-a water diversion cavity; 105-a spoiler; 106-parallel channels; 107-water catchment cavity; 108-a first set screw; 106-1-lower level parallel channels; 106-2-upper level parallel channels;

301-threaded hole; 302-support lug; 303-a first mounting hole; 304-a second mounting hole; 305-a beam; 306-a third radio frequency channel; 307-a second set screw;

61-a third set screw;

71-first half mask; 72-a second half-shell; 701-a third mounting hole; 702-a fourth mounting hole;

801-liquid inlet joint metal matrix; 802-a liquid inlet channel; 803-liquid inlet valve block; 804-a first resilient member; 805-a first elastic internal resistance check ring; 806-elastic external check ring; 807-promotion pins; 808-a circular pushing platform; 809-fixing the end cover; 810-a first thrust stage; 811-a movable sleeve; 812-a liquid outlet valve block; 813-second elastic internal resistance check ring; 814-a liquid outlet channel; 815-liquid outlet joint metal matrix; 816-a second elastic element; 817-tapered thread section; 818-an arc-shaped notch; 819-a linear slot; 820-a first restriction site; 821-second restriction site.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.

Example 1

One embodiment of the present invention, as shown in fig. 1-23, discloses a liquid-cooled phased array antenna, comprising: the radio frequency coaxial connector comprises a liquid cooling plate 1, an antenna disc 2, a TR component 3, a radio frequency coaxial connector 4, an adapter 6, a liquid inlet and outlet connector 8, a first liquid cooling pipe 9 and a second liquid cooling pipe 10; wherein, a plurality of antenna radiation units are arranged on the antenna disk 2 in an array manner; one end of the TR component 3 is connected with an antenna, and the other end is connected with an intermediate frequency processing unit, thereby forming a wireless transceiving system. The antenna disc 2 and the TR components are respectively fixedly arranged on the upper side and the lower side of the liquid cooling plate 1 and are in signal connection through the radio frequency coaxial connector 4. Adapter 6 is installed at 1 both ends of liquid cooling board, and adapter 6 passes through business turn over liquid joint 8 and liquid cooling union coupling, with 1 access liquid cooling system of liquid cooling board, makes the inside circulation coolant liquid of 1 liquid cooling boards, cools off phased array antenna.

A liquid cooling system, comprising: liquid cooling plate 1, liquid inlet pipeline, liquid return pipeline, liquid inlet monitor, liquid return monitor, liquid cold source and intelligent microcontroller.

The working area of the liquid cooling system is arranged between the liquid cooling plate 1 and the liquid cooling source, cooling liquid at the liquid cooling source is communicated into the liquid cooling plate 1 through a liquid inlet pipeline, the cooling liquid absorbs heat at the liquid cooling plate 1 to take away heat generated by the working of the phased array antenna, and the temperature of the cooling liquid is raised; the heated cooling liquid flows back to the liquid cold source through the liquid return pipeline; after the cooling liquid flows through the condenser at the liquid cooling source to release heat, the cooling liquid is cooled, and the cooled cooling liquid returns to the circulating pipeline to enter the next cooling circulation.

The feed liquor pipeline includes: a first liquid cooling pipe 9, a first liquid inlet and outlet joint and a first adapter; the liquid return pipeline includes: second liquid cooling pipe 9, second business turn over liquid joint, second adapter.

Two ends of the liquid cooling plate 1 are connected with adapters 6, and each adapter 6 comprises a first adapter and a second adapter; the first adapter is connected with the first liquid cooling pipe 9 through the first liquid inlet and outlet connector, and the second adapter is connected with the second liquid cooling pipe 9 through the second liquid inlet and outlet connector, so that the liquid cooling plate 1 is connected into the liquid cooling system.

The main body of the liquid cooling plate 1 is a metal substrate having an internal cavity for circulating a cooling liquid. The internal cavity structure includes: a water diversion cavity 104, a parallel flow passage 106 and a water collection cavity 107; the parallel flow path 106 is a plurality of linear flow paths arranged in parallel. The water diversion cavity 104 and the water collection cavity 107 are arranged on two sides of the parallel flow passage 106, and the water diversion cavity 104 and the water collection cavity 107 are communicated through the parallel flow passage 107.

Further, both ends of the liquid cooling plate 1 are provided with a liquid inlet 101 and a liquid outlet 102, and the liquid inlet 101 and the liquid outlet 102 are communicated with the internal cavity for realizing the inflow and outflow of the cooling liquid. Specifically, one end of the water diversion cavity 104 is communicated with the liquid inlet 101, and the other end is communicated with the parallel flow channel 106; the water collecting chamber 107 has one end communicating with the parallel flow path 106 and the other end communicating with the liquid outlet 102.

Further, a plurality of first radio frequency channels 103 distributed in an array are arranged on a metal substrate of the liquid cooling plate 1, specifically, the first radio frequency channels 103 are arranged on the metal substrate between adjacent parallel flow channels 106, and the first radio frequency channels 103 penetrate through the metal substrate.

The first radio frequency channel 103 is provided with a radio frequency coaxial connector 4, and two ends of the radio frequency coaxial connector 4 are connected with the antenna disc 2 and the TR component. Wherein, TR subassembly 3 and antenna dish 2 are common fixed connection on liquid cold plate 1, and antenna dish 2 is attached in the front of liquid cold plate 1, and TR subassembly 3 is attached at the back of liquid cold plate 1, and radio frequency coaxial connector 4 runs through liquid cold plate 1 and links to each other TR subassembly 3 and antenna dish 2, has set up complete signal transmission passageway.

Specifically, a plurality of first radio frequency channels 103 distributed in an array are arranged on the liquid cooling plate 1, the radio frequency coaxial connectors 4 are installed in the first radio frequency channels 103, or the radio frequency coaxial connectors 4 penetrate through the first radio frequency channels 103 to connect the antenna radiation units and the TR assemblies 3 on two sides of the liquid cooling plate 1.

In one embodiment of the invention, the liquid-cooled plate 1 is disk-shaped. The liquid cooling plate 1 is used for dissipating heat of the TR component 3 attached to the surface of the liquid cooling plate, and the heat dissipated when the TR component 3 works is taken away through circulating cooling liquid (water or other liquid).

In an embodiment of the present invention, as shown in fig. 9, a water diversion chamber 104, a parallel flow passage 106 and a water collection chamber 107 are respectively disposed inside the liquid cooling plate 1 from left to right. The water diversion cavity 104 drains the cooling fluid input into the liquid cooling plate 1 into each parallel flow channel 106, and the water collection cavity 107 merges the cooling fluid flowing out of each parallel flow channel 106 to the liquid outlet 102, so as to flow out of the liquid cooling plate 1.

As shown in fig. 9, the parallel flow channels 106 distributed in parallel on the liquid cooling plate 1 form a heat exchange working area of the liquid cooling plate 1, which completely covers the contact area between the liquid cooling plate 1 and the TR module 3. The working area of the liquid cooling plate 1 is provided with a first radio frequency channel 103 for the radio frequency coaxial connector 4 to pass through.

Further, the first radio frequency channels 103 are distributed on the liquid cooling plate 1 in an array manner, a group of parallel flow channels 106 are arranged between every two rows of the first radio frequency channels 103, and the longitudinal sections of the parallel flow channels 106 are rectangular.

Further, the rectangular size of the cross section of the first rf channel 103 is determined by hydrodynamic simulation, and the rectangular aspect ratio is 3.

Further, the parallel flow channel 106 connecting the water diversion cavity 104 and the water collection cavity 107 is divided into two layers of flow channels: a lower layer of parallel flow channels 106-1 and an upper layer of parallel flow channels 106-2. The distance between the two layers of the flow channels of the lower layer of parallel flow channel 106-1 and the upper layer of parallel flow channel 106-2 is 2mm, and the heat exchange area of the liquid and the metal substrate in the heat exchange working area in unit volume is increased to the maximum extent.

In one embodiment of the present invention, as shown in fig. 5, turbulence generators 105 are disposed in the water diversion cavity 104 and the water collection cavity 107 and penetrate through the cavities in a disordered manner. The spoiler 105 is a columnar structure communicating the upper and lower surfaces of the cavity, and the diameter of the spoiler 105 is 3mm. The turbulator 105 can make the cooling liquid flow disorderly in the cavity, can promote the cooling liquid to evenly distribute to each parallel runner 106, and simultaneously promote the fluid to enter a turbulent flow state, thereby further improving the heat exchange efficiency between the cooling liquid and the metal cavity.

In one embodiment of the present invention, the overall appearance of the liquid cooling plate 1 is shown in fig. 6, the transverse cross-sectional view of the liquid cooling plate 1 at the position of the parallel flow channels 106 is shown in fig. 9, and the longitudinal cross-sectional view of the liquid cooling plate 1 at the position of the parallel flow channels 106 is shown in fig. 10.

Because the structure of the inner cavity of the liquid cooling plate 1 is complex, the liquid cooling plate 1 is formed by splicing a plurality of layers, and all the layers are fixed by welding or bonding.

Further, as shown in fig. 8, a sealing ring 5 is provided between the adapter 6 and the liquid cooling plate 1 to ensure water tightness.

Further, as shown in fig. 16, the adapter 6 is fixedly connected to the liquid cooling plate 1 through a mounting lug on the end cover, specifically, a threaded hole is formed in the adapter 6, and the adapter is connected to the liquid cooling plate 1 through a screw.

In a specific embodiment of the present invention, as shown in fig. 17, the pipe in the adapter 6 is L-shaped, so that the liquid inlet 101 can extend in a direction perpendicular to the liquid cooling plate 1, and the liquid cooling plate 1 can be connected to the liquid cooling system perpendicular to the first liquid cooling pipe 9 and the second liquid cooling pipe 10, which is convenient for installation and fixation. The other end of the adapter 6 is provided with a liquid inlet and outlet joint 8 which is in butt joint with the liquid cooling pipeline through the liquid inlet and outlet joint 8.

Furthermore, the liquid cooling plate 1 is made of rustproof aluminum with good welding performance and high heat conductivity. The liquid cooling plate 1 is fixed to the phased array radar through holes 108 uniformly distributed in the circumferential direction.

When radiating phased array antenna through liquid cooling board 1:

as shown in fig. 5 and 9, the cooling fluid flows into liquid-cooled plate 1 from fluid inlet 101 through adapter 6, flows through water diversion chamber 104, parallel flow passage 106 and water collection chamber 107 in sequence, flows out of liquid-cooled plate 1 through fluid outlet 102, and flows back to the cooling system through adapter 6.

The liquid cooling plate 1 comprises a metal substrate, a liquid inlet 101, a liquid outlet 102, a water distribution cavity 104, a water collection cavity 107, a parallel flow channel 106, a spoiler 105 and a first radio frequency channel 103; the liquid cooling plate 1 is a heat dissipation device which is connected into a heat dissipation system through the adapter 6, the whole structure is compact, the function areas are reasonably distributed, the welding realizability is good, the cooling liquid can be ensured to be fully heat-exchanged in the liquid cooling structure, and meanwhile, the liquid cooling plate has good adaptability to the environments such as vibration, impact and the like.

The liquid-cooled plate 1 of the phased array antenna is the main liquid-cooled heat sink, as shown in fig. 1-5. Adapter 6 is all installed to water inlet, the delivery port department of the both sides of liquid cooling board 1, and adapter 6 communicates with liquid cooling board 1. Adapter 6 passes through the flange and is radially fixed with liquid-cooled board 1, and the adapter 6 of both sides connects 8 through business turn over liquid and is connected with first liquid-cooled pipe 9 and second liquid-cooled pipe 10 respectively, with liquid-cooled board 1 access liquid cooling system in.

Specifically, the radio frequency coaxial connector 4 penetrates through the liquid cooling plate 1, and two ends of the radio frequency coaxial connector 4 are respectively connected with the antenna radiation unit on the antenna disc 2 and the radio frequency channel of the TR component 3.

Further, install multiunit TR subassembly 3 on the liquid cooling board 1, supporting structure 7 is established to multiunit TR subassembly 3's outside cover, and supporting structure 7 passes through the screw connection with the TR subassembly to fixed mounting is on liquid cooling board 1 for support TR subassembly 3.

Furthermore, one end of the TR module 3 is connected to the antenna, and the other end is connected to the if processing unit, thereby forming a wireless transceiving system.

Further, the TR module 3 is a plate-like structure, and a plurality of TR modules 3 are installed in parallel below the liquid-cooling plate 1.

Specifically, an assembly mounting hole 301 is formed in the TR assembly 3, and the assembly mounting hole 301 is formed in support lugs 302 on two sides of an upper cross beam 305 of the TR assembly 3; the second fixing screw 307 is installed in the component installation hole 301 and fixed with the metal base of the liquid cooling plate 1.

Further, a third rf channel 306 is disposed on the beam 305, and the tr module 3 is connected to the lower end of the rf coaxial connector 4 through the third rf channel 306.

Further, the side surface of the TR component 3 is provided with a first mounting hole 303 and a second mounting hole 304; mounting screws in the first mounting hole 303 and the second mounting hole 304 fixedly connect the TR assembly 3 with the support structure 7.

Further, the support structure 7 is a cover structure and can cover the TR component 3; the support structure 7 comprises: a first half cover 71 and a second half cover 72; specifically, the first half cover 71 and the second half cover 72 are each provided with a third mounting hole 701 and a fourth mounting hole 702. The third mounting holes 701 and the fourth mounting holes 702 on the support structure 7 correspond to the first mounting holes 303 and the second mounting holes 304 on the TR assembly 3 one to one, and are connected by screws.

Further, adapter 6 is all connected at the both ends of liquid cooling board 1, and adapter 6 and the inner chamber intercommunication of liquid cooling board 1 set up sealing washer 5 between adapter 6 and the liquid cooling board 1.

Further, adapter 6 connects the liquid cooling pipe through business turn over liquid joint 8, and liquid cooling board 1 passes through adapter 6 and business turn over liquid joint 8 and inserts the liquid cooling system. Specifically, the access liquid connects includes: a liquid inlet joint and a liquid outlet joint. During the use, liquid inlet joint and adapter 6 fixed connection, go out liquid joint and liquid cooling pipe fixed connection, through liquid inlet joint and the grafting of going out the liquid joint fixed, liquid inlet joint and the inside intercommunication of liquid joint realize the intercommunication of adapter 6 and liquid cooling pipe, and then realize inserting liquid cooling board 1 into the liquid cooling system.

Furthermore, there are two adapters 6, which are a first adapter and a second adapter respectively; two liquid inlet and outlet joints 8 are provided, namely a first liquid inlet and outlet joint and a second liquid inlet and outlet joint respectively; the liquid-cooled tube includes: a first liquid-cooled tube 9 and a second liquid-cooled tube 10. First adapter and second adapter are connected respectively at the both ends of liquid cold plate 1, and specifically, adapter 6 is connected fixedly through third set screw 61 with liquid cold plate 1. The first adapter is communicated with the first liquid cooling pipe 9 through the first liquid inlet and outlet connector, and the second adapter is communicated with the second liquid cooling pipe 10 through the second liquid inlet and outlet connector.

As shown in fig. 23, after the liquid cooling plate 1 of the present invention is connected to the liquid cooling system, the controller controls whether the liquid cooling system starts the circulation flow and the flow speed of the cooling liquid; the cooling liquid of the liquid cooling source flows into the liquid cooling plate 1 through the liquid inlet pipeline to carry out liquid cooling heat dissipation on the phased array antenna array, and the cooling liquid after heat exchange flows back to the liquid cooling source through the liquid outlet pipeline.

Specifically, the first liquid cooling pipe 9 serves as a liquid inlet pipeline, and the second liquid cooling pipe 10 serves as a liquid outlet pipeline; through first liquid-cooled pipe 9 to liquid-cooled plate 1 injection cooling liquid, the cooling liquid passes through business turn over liquid joint 8 and adapter 6 and liquid-cooled plate 1 intercommunication, the cooling liquid flows into branch water cavity 104 and then disperses to each parallel runner 106 under the vortex effect through spoiler 105 from inlet 101, when the cooling liquid flows through parallel runner 106, can cool off the heat transfer to the phased array antenna of installing on liquid-cooled plate 1, the cooling liquid after the heat transfer assembles the back through catchment chamber 107 and flows out from liquid outlet 102, and through adapter 6, business turn over liquid joint 8 flows into second liquid-cooled pipe 10, flow back to the liquid cooling system.

In one embodiment of the present invention, specifically, a temperature sensor is disposed at the phased array antenna; and a liquid inlet monitor is arranged on the liquid inlet pipeline and used for monitoring the temperature, flow and pressure of the cooling liquid flowing into the liquid cooling plate. And a liquid return detector is arranged on the liquid return pipeline and used for monitoring the temperature and the pressure of the cooling liquid of the flowing liquid cooling plate.

Phased array antennas operate with a significant amount of heat generation. If this heat cannot be removed, the sensitive components within the antenna will not operate. Therefore, the liquid cooling system of the phased array antenna of the present invention is provided with a temperature detector (not shown) to monitor the temperature of the phased array antenna.

Furthermore, when the phased array antenna works, the temperatures of the liquid inlet pipeline, the liquid return pipeline and the phased array antenna can be monitored in real time by the liquid inlet monitor, the liquid return monitor and the temperature sensor in the phased array.

In one embodiment of the present invention, the liquid cooling source includes: the variable-frequency circulating pump provides power for circulation of cooling liquid, and the electronic expansion valve can adjust the liquid inlet flow of the liquid inlet pipeline according to instructions of the intelligent microcontroller.

Furthermore, the intelligent microcontroller can control the start and stop of the variable-frequency circulating pump and the electronic expansion valve at the liquid cold source and the opening degree of the electronic expansion valve, and the flow of the liquid inlet pipeline is adjusted through the opening degree of the electronic expansion valve.

10min before the phased array antenna starts to work, the intelligent microcontroller controls the liquid cold source to start to work, performs circulating heat exchange on the phased array antenna installed on the liquid cold plate 1, and controls the flow and the temperature of the liquid inlet pipeline to be initial set values.

Furthermore, the intelligent microcontroller can compare the temperature and the pressure value of the cooling liquid in the liquid inlet pipeline and the liquid outlet pipeline transmitted by the liquid inlet monitor and the liquid return monitor, judge whether the liquid cooling plate 1 works reliably, and further judge the cooling effect of the liquid cooling plate 1 on the phased array antenna.

In a specific embodiment of the invention, an upper limit temperature and a lower limit temperature for normal operation of the phased array antenna are set; meanwhile, the upper limit pressure of the liquid return pipeline for normal work is set.

Furthermore, when the pressure value of the liquid return pipeline is abnormal, the intelligent microcontroller controls the phased array antenna to reduce power and work, and the phased array antenna works by depending on the solid heat sink of the liquid cooling plate.

Further, when the temperature sensor in the phased array antenna monitors that the temperature value of the phased array antenna exceeds the preset upper limit temperature, the intelligent microcontroller controls the liquid cooling source to increase the flow of the cooling liquid of the liquid inlet pipeline until the temperature value of the phased array antenna monitored by the temperature sensor is lower than the preset upper limit temperature.

Further, when the monitoring value of the temperature sensor in the phased array antenna is lower than the preset lower limit temperature, the intelligent microcontroller controls the liquid cooling source to reduce the flow of the cooling liquid of the liquid inlet pipeline until the temperature sensor monitors that the temperature value of the phased array antenna is higher than the preset lower limit temperature.

The liquid cooling system of the invention has the concrete structure and the working principle that:

in one embodiment of the present invention, the liquid inlet pipeline includes: a first liquid cooling pipe 9, a liquid inlet and outlet joint 8 and an adapter 6; the liquid return pipeline includes: a second liquid cooling pipe 10, a liquid inlet and outlet joint 8 and an adapter 6.

Further, the phased array antenna is installed on the liquid cooling plate 1, and cooling liquid can flow through the liquid cooling plate 1 to dissipate heat of the phased array antenna; specifically, adapters 6 are installed at two ends of the liquid cooling plate 1, and an internal cavity of the liquid cooling plate 1 is communicated with an internal flow channel of the adapter 6; two groups of adapters 6 and liquid inlet and outlet connectors 8 are arranged, and two ends of the liquid cooling plate 1 are respectively communicated with a first liquid cooling pipe 9 and a second liquid cooling pipe 10 through the adapters 6 and the liquid inlet and outlet connectors 8; as shown in fig. 2. The first liquid cooling pipe 9 is used for injecting cooling liquid into the liquid cooling plate 1, and the second liquid cooling pipe 10 is used for recovering the cooling liquid.

In a specific embodiment of the invention, the two ends of the liquid cooling plate 1 are both connected with the adapters 6, the adapters 6 are communicated with the inner cavity of the liquid cooling plate 1, and the sealing ring 5 is arranged between the adapters 6 and the liquid cooling plate 1.

In a specific embodiment of the invention, the adapter 6 is connected with the liquid cooling pipe through the liquid inlet and outlet joint 8, and the liquid cooling plate 1 is connected into the liquid cooling system through the adapter 6 and the liquid inlet and outlet joint 8. Specifically, the access liquid connects includes: a liquid inlet joint and a liquid outlet joint. During the use, liquid outlet joint and adapter 6 fixed connection, liquid outlet joint and liquid cooling pipe fixed connection, through liquid inlet joint and the grafting of liquid outlet joint fixed, liquid inlet joint and the inside intercommunication of liquid outlet joint realize the intercommunication of adapter 6 and liquid cooling pipe, and then realize inserting liquid cooling board 1 into the liquid cooling system.

Further, the adapter 6 and the liquid cooling plate 1 are connected and fixed by a third fixing screw 61.

The number of the adapters 6 is two, namely a first adapter and a second adapter; two liquid inlet and outlet joints 8 are provided, namely a first liquid inlet and outlet joint and a second liquid inlet and outlet joint respectively; the liquid-cooled tube includes: a first liquid-cooled tube 9 and a second liquid-cooled tube 10. First adapter and second adapter are connected respectively at the both ends of liquid-cooled board, and first adapter passes through first business turn over liquid and connects and first liquid-cooled pipe 9 intercommunication, and the second adapter passes through second business turn over liquid and connects and second liquid-cooled pipe 10 intercommunication.

In one embodiment of the present invention, as shown in fig. 17, the pipe inside the adapter 6 is L-shaped. The adapter 6 of L shape runner can make inlet 101 can extend the direction of perpendicular to liquid cooling plate 1, can make the first liquid cooling pipe 9 of liquid cooling plate 1 perpendicular to, the second liquid cooling pipe 10 inserts the liquid cooling system, and convenient installation is fixed. The other end of the adapter 6 is provided with a liquid inlet and outlet joint 8 which is in butt joint with the liquid cooling pipeline through the liquid inlet and outlet joint 8.

The structure of the liquid inlet and outlet joint 8 is described as follows:

as shown in fig. 18, 19 and 22, the liquid inlet/outlet joint 8 of the present invention includes: a liquid inlet joint and a liquid outlet joint.

The liquid outlet joint and the liquid inlet joint are butted along the axis, so that the interiors of the liquid outlet joint and the liquid inlet joint are communicated and used for circulating cooling liquid; the liquid cooling plate 1 of the phased array antenna can be connected into the liquid cooling circulation system of the phased array antenna through the liquid inlet and outlet connector.

Wherein:

the liquid inlet joint includes: the liquid inlet joint metal base body 801, the liquid inlet valve block 803, the first elastic piece 804 and the circular pushing platform 808 are arranged in an inner cavity of the liquid inlet joint metal base body 801; the circular pushing platform 808 is fixedly connected with a liquid inlet joint metal substrate 801; the liquid inlet valve block 803 is sleeved on the circular pushing platform 808 and used for sealing the liquid inlet channel 802; a first elastic element 804 is arranged between the inlet valve block 803 and the inlet joint metal base 801.

The liquid outlet joint comprises: a liquid outlet joint metal base 815, a liquid outlet valve block 812 and a second elastic member 816; a liquid outlet valve block 812 and a second elastic member 816 are arranged in the inner cavity of the liquid outlet joint metal base 815; the liquid outlet valve block 812 is used for sealing a liquid outlet channel of the liquid outlet joint metal base 815, and a second elastic piece 816 is arranged between the liquid outlet valve block 812 and the liquid outlet joint metal base 815.

As shown in fig. 22, after the liquid inlet joint is butted with the liquid outlet joint, the liquid inlet joint and the liquid outlet joint can be communicated. When the liquid outlet connector is communicated, the liquid outlet connector can be inserted into the inner cavity of the liquid inlet connector, the liquid inlet connector is overlapped with the liquid outlet connector, and at the moment, the circular pushing platform 808 pushes the liquid outlet valve block 812 to move inwards (away from the liquid outlet channel) and compress the second elastic piece 816; the liquid outlet joint metal base 815 pushes the liquid inlet valve block 803 to move inwards (away from the liquid inlet channel direction) and compresses the first elastic element 804, and the cooling liquid flows out from the liquid outlet channel, and the liquid outlet joint is communicated with the liquid inlet joint.

As shown in fig. 19, the liquid inlet joint has the following specific structure:

further, the circular pushing platform 808 is columnar, and the circular pushing platform 808 is coaxial with the liquid inlet joint metal matrix 801; the circular pushing platform 808 and the liquid inlet joint metal base 801 are fixedly connected or integrally structured. Specifically, the end surface of the circular pushing platform 808 is flush with the end surface of the liquid inlet joint metal base 801.

Further, the liquid inlet valve block 803 is a circular ring structure, and the inner diameter of the liquid inlet valve block is in clearance fit with the outer surface of the circular pushing platform 808 and in clearance fit with the inner surface of the liquid outlet joint metal base 801.

Specifically, an annular liquid inlet valve block 803 is sleeved outside the circular pushing platform 808, and the liquid inlet valve block 803 can seal a liquid inlet channel 802 of the liquid inlet joint metal base 801; that is, the inner side of the inlet valve block 803 is fitted to the outer surface of the circular pushing table 808, and the outer side of the inlet valve block 803 is fitted to the inner wall surface of the inlet joint metal base 801.

Further, the first elastic member 804 and the liquid inlet valve block 803 are sleeved outside the circular pushing platform 808 in parallel, and the first elastic member 804 and the liquid inlet valve block 803 are arranged in parallel along the axis of the circular pushing platform 808; the first elastic member 804 is provided between the inlet valve block 803 and the end surface of the cavity of the inlet joint metal base 801, that is, the first elastic member 804 is provided between the side surface of the inlet valve block 803 and the end surface of the cavity of the inlet joint metal base 801.

Further, in order to ensure the sealing effect of the liquid inlet valve block 803 on the liquid inlet channel 802, a first elastic inner blocking ring 805 and an elastic outer blocking ring 806 are arranged to seal the liquid inlet channel 802; specifically, a first elastic internal resistance check ring 805 is arranged between the liquid inlet valve block 803 and the circular pushing platform 808, and the first elastic internal resistance check ring 805 is used for sealing a gap between the liquid inlet valve block 803 and the circular pushing platform 808; an elastic outer check ring 806 is arranged between the liquid inlet valve block 803 and the inner wall surface of the liquid inlet joint metal base body 801, and the elastic outer check ring 806 is used for sealing a gap between the liquid inlet valve block 803 and the liquid inlet joint metal base body 801.

Further, a first elastic inner check ring 805 and an elastic outer check ring 806 are fixedly mounted on the circular pushing platform 808 and the metal base 801 of the liquid inlet joint respectively.

Specifically, the first elastic internal resistance check ring 805 is fixedly mounted on the cylindrical side surface of the circular pushing platform 808 in a bonding or clamping manner, and the elastic external resistance check ring 806 is fixedly mounted on the inner wall surface of the liquid inlet joint metal base 801 in a bonding or clamping manner. The first elastic inner resistance check ring 805 protrudes out of the outer surface of the circular pushing platform 808, the elastic outer resistance check ring 806 protrudes out of the inner wall surface of the liquid outlet joint metal base 801, and the liquid inlet valve block 803 is in interference fit with the first elastic inner resistance check ring 805 and the elastic outer resistance check ring 806 to maintain the tightness of the liquid inlet channel.

Furthermore, a boosting pin 807 is arranged on the outer side surface of the liquid inlet joint and is used for matching with the movable sleeve 811; one end of the liquid inlet joint is provided with a liquid inlet channel 802, the other end of the liquid inlet joint is provided with a fixed end cover 809, and the fixed end cover 809 is used for being connected with the adapter 6.

As shown in fig. 18, the liquid outlet joint has the following specific structure:

the liquid outlet joint comprises: a liquid outlet joint metal base 815, a liquid outlet valve block 812 and a second elastic member 816; the liquid outlet valve block 812 is used for sealing a liquid outlet channel 814 of the liquid outlet joint metal base 815, a second elastic piece 816 is arranged between the liquid outlet valve block 812 and the left end face of the liquid outlet joint metal base 815, the liquid outlet valve block 812 is pressed to slide to the left, the liquid outlet joint can be opened, and cooling liquid in the liquid outlet joint flows out of the liquid outlet channel 814.

Further, a second elastic inner resistance check ring 813 is arranged between the liquid outlet valve block 812 and the inner wall surface of the liquid outlet joint metal base 815.

Specifically, the second internal elastic resistance retainer ring 813 is fixed on the liquid outlet valve block 812 in an adhesion or snap connection manner, and can move along with the liquid outlet valve block 812. The second elastic internal resistance check ring 813 protrudes out of the surface of the liquid outlet valve block 812, the liquid outlet valve block 812 blocks the liquid outlet channel 814 under the thrust of the second elastic member 816, and the liquid outlet channel is sealed by the second elastic internal resistance check ring 813, as shown in fig. 18.

Further, one end of the liquid outlet joint metal base 815 is provided with a liquid outlet channel 814, and the other end is provided with a conical threaded section 817, and is in threaded connection with the first cooling pipe 9 through the conical threaded section 817.

Further, the outer side of the liquid outlet joint metal base 815 is sleeved with a movable sleeve 811. And the movable sleeve 811 is fitted on the liquid outlet joint metal base 815, and the movable sleeve 811 and the liquid outlet joint metal base 815 can rotate relatively but cannot move relatively in the axial direction.

Specifically, the movable sleeve 811 is provided with a guide groove, and the guide groove includes: an arcuate notch 818 and a linear notch 819; a linear slot 819 extends in the axial direction of the movable sleeve 811; the arcuate slot 818 communicates with the linear slot 819 at one end and extends to the opening of the movable sleeve 811 at the other end. Further, the linear slot 819 has a first restriction 820 and a second restriction 821 at opposite ends thereof.

When the liquid inlet joint is in butt joint with the liquid outlet joint and is in butt joint through the movable sleeve 811, the boosting pin 807 of the liquid inlet joint can slide along the arc-shaped notch 818, after the boosting pin 807 moves to the first limit point 820, the external force is applied by loosening, the first elastic piece 804 and the second elastic piece 816 push the liquid outlet joint and the liquid inlet joint to be away from each other, the boosting pin 807 moves from the first limit point 820 to the second limit point 821, and the butt joint of the liquid inlet joint and the liquid outlet joint is completed, as shown in fig. 22.

In one embodiment of the present invention, the first elastic member 804 and the second elastic member 816 are metal springs.

Further, in one embodiment of the present invention: a first push-stop platform 810 is arranged at the liquid inlet channel 802 of the liquid inlet joint. The first pushing platform 810 protrudes out of the inner wall of the liquid inlet channel 802 and is used for blocking the liquid inlet valve block 803; a second protruding pushing platform is arranged on the inner wall of the liquid outlet channel 814 of the liquid outlet joint, and the second pushing platform is used for blocking the liquid outlet valve block 812.

As shown in fig. 18, the liquid outlet channel 814 of the liquid outlet joint is matched with the metal base 815 of the liquid outlet joint to block liquid leakage, the liquid outlet valve block 812 is pushed by the second elastic member 816 on the left side to abut against the second pushing platform of the liquid outlet channel 814, and the liquid outlet valve block is limited by the right pushing platform at a fixed position in the metal base. The liquid outlet valve block 812 is a cylindrical structure, and the outer diameter thereof is in clearance fit with the inner diameter of the metal matrix. The second elastic internal resistance check ring 813 protrudes out of the outer surface of the liquid outlet valve block 812, and the second elastic internal resistance check ring 813 is in interference fit with the metal substrate to maintain the tightness of the liquid outlet channel 814.

As shown in fig. 19, a liquid inlet valve block 803 and a circular pushing platform 808 are arranged at a liquid inlet channel 802 of the liquid inlet joint to cooperate with each other to block liquid leakage, the liquid inlet valve block 803 is pushed by a right first elastic member 804 to abut against a first pushing platform 810 of the liquid inlet channel 802, and the liquid inlet valve block 803 is limited by the left pushing platform at a fixed position in a metal matrix.

Further, a certain distance is reserved between the liquid inlet valve block 803 and the circular pushing platform 808 and the liquid inlet channel 802 (the end surface of the metal base 801 of the liquid inlet joint), namely, the liquid inlet valve block 803 and the circular pushing platform 808 are recessed into the liquid inlet channel 802, so that the liquid outlet channel 813 is convenient to butt joint along the inner wall surface of the liquid inlet channel 802.

As shown in fig. 22, when the liquid inlet connector is plugged into the liquid outlet connector, that is, the liquid outlet channel 814 is inserted into the liquid inlet channel 802, the liquid outlet channel 814 contacts and is pressed by the liquid inlet valve block 803, the first elastic member 804 is compressed, the liquid inlet valve block 803 moves to the right, the liquid inlet valve block 803 is separated from the first elastic inner resistance retaining ring 805 and the elastic outer resistance retaining ring 806, and the liquid inlet channel 802 is communicated (opened). Meanwhile, the left end of the circular pushing platform 808 is in contact with and extrudes the liquid outlet valve block 812, the second elastic piece 816 is compressed, the liquid outlet valve block 812 moves leftwards, the liquid outlet valve block 812 is separated from the second elastic internal resistance check ring 813 and the liquid outlet channel 814, the liquid outlet channel 814 is communicated (opened), and at the moment, fluid flows into the liquid inlet channel 802 through the liquid outlet channel 814, so that the communication between the liquid inlet joint and the liquid outlet joint is realized.

Specifically, when the liquid inlet joint and the liquid outlet joint are inserted, the boosting pin 807 of the liquid inlet joint is aligned with the opening of the movable sleeve 811. Under the compression of the external force, the push-up pin 807 slides along the arc-shaped notch 818 from the opening to the first limit point 820 along with the rotation of the movable sleeve 811. At this time, the applied external force is omitted, so that the liquid inlet joint and the liquid outlet joint are naturally separated under the action of the first elastic element 804 and the second elastic element 816. The push-assist pin 807 will slide along the linear slot 819 to the final second limit 821, completing the docking.

When the liquid inlet joint and the liquid outlet joint are pulled out, the push-up pin 807 slides from the second restriction point 821 to the first restriction point 820 under the squeezing of an external force. At this time, the applied external force is omitted, so that the liquid inlet joint and the liquid outlet joint are naturally separated under the action of the first elastic element 804 and the second elastic element 816. The push-on pin 807 will slide out of the opening along the arcuate notch 818 from the first limit point 820, completing the extraction.

The phased array antenna liquid cooling system formed by the liquid cooling plate 1, the liquid inlet pipeline, the liquid return pipeline, the liquid inlet monitor, the liquid return monitor, the liquid cooling source and the intelligent microcontroller is compact in overall structure and high in reliability, gives consideration to both passive and active flow control strategies, can ensure that cooling liquid generates sufficient heat exchange in the liquid cooling structure, enables the phased array antenna to work in a stable environment, and has good adaptability to the environments of vibration, impact and the like of an aircraft.

Example 2

The present embodiment provides a method for cooling a liquid-cooled phased array antenna according to embodiment 1, including the steps of:

step S1: the intelligent microcontroller controls the starting circulation of cooling liquid in the liquid cooling system;

specifically, in the step S1, 10min before the phased array antenna is started, the intelligent microcontroller controls the start-up operation of the liquid cold source, and the intelligent microcontroller controls the frequency conversion circulation pump and the electronic expansion valve at the liquid cold source to be opened; provide the endless coolant liquid through the liquid cooling source to liquid cooling board 1, the coolant liquid carries out the circulation heat transfer to the phased array antenna of installing on liquid cooling board 1 to flow and the temperature through intelligent microcontroller control liquid inlet pipe way are initial set value.

Step S2: after the circulation of the cooling liquid is started, the frequency conversion circulating pump pumps the cooling liquid in the storage tank into the liquid inlet pipeline.

Cooling liquid flows into the liquid cooling plate 1 through the liquid inlet loop, and the phased array antenna on the liquid cooling plate 1 is cooled and heat exchanged in the process that the cooling liquid flows through the liquid cooling plate 1; the heat exchange process is as follows: the cooling liquid in the liquid cooling plate 1 exchanges heat with the metal base body, the metal base body exchanges heat with the radio frequency coaxial connector 4, the radio frequency coaxial connector 4 exchanges heat with the antenna radiation unit and the TR component 3, and finally the phased array antenna is cooled.

In the step S2, the opening degree of the electronic expansion valve is adjusted by the intelligent microcontroller, so that the flow rate of the cooling liquid in the liquid inlet pipeline can be adjusted, and the heat exchange efficiency of the cooling liquid is further controlled.

And step S3: the cooling liquid after heat exchange flows back to the cooling source from the liquid return pipeline;

in the step S3, the cooling liquid with increased temperature after heat exchange circulates in the liquid return pipeline, a condenser is arranged in the liquid return pipeline, and the cooling liquid flows back to the storage tank of the liquid cooling source after being condensed and cooled by the condenser for the next cooling liquid circulation (liquid cooling heat dissipation circulation).

And step S4: and repeating the step S2 and the step S3 to circularly radiate the phased array antenna.

In the step S2 and the step S3, the temperatures of the liquid inlet pipeline, the liquid return pipeline and the phased array antenna are respectively monitored in real time through a liquid inlet monitor, a liquid return monitor and a temperature sensor in the phased array; and the temperature information of the liquid inlet pipeline, the liquid return pipeline and the phased array antenna is transmitted to the intelligent microcontroller.

In the steps S2 to S4, the intelligent microcontroller compares the temperature and the pressure values of the cooling liquid in the liquid inlet pipeline and the liquid outlet pipeline transmitted by the liquid inlet monitor and the liquid return monitor, and determines whether the liquid cooling plate 1 works reliably, thereby determining the cooling effect of the liquid cooling plate 1 on the phased array antenna.

In the step S3, when the pressure value of the liquid return pipeline is abnormal, the intelligent microcontroller controls the phased array antenna to reduce power to work, and the phased array antenna works by means of the solid heat sink of the liquid cooling plate.

In the steps S2 to S4, when the temperature sensor in the phased array antenna monitors that the temperature value of the phased array antenna exceeds the predetermined upper limit temperature, the intelligent microcontroller controls the liquid cooling source to increase the flow rate of the cooling liquid in the liquid inlet pipeline until the temperature value of the phased array antenna monitored by the temperature sensor is lower than the predetermined upper limit temperature.

In the steps S2 to S4, when the monitoring value of the temperature sensor in the phased array antenna is lower than the predetermined lower limit temperature, the intelligent microcontroller controls the liquid cooling source to reduce the flow rate of the cooling liquid in the liquid inlet pipeline until the temperature sensor monitors that the temperature value of the phased array antenna is higher than the predetermined lower limit temperature.

In the step S1, before the circulation heat dissipation of the liquid cooling system is started, the circulation pipeline of the liquid cooling system is first communicated, specifically, the liquid inlet 101 and the liquid outlet 102 of the liquid cooling plate 1 are both communicated with the adapters 6, the two adapters 6 are respectively communicated with the liquid inlet joints of the two liquid inlet and outlet joints 8, and the liquid outlet joints of the two liquid inlet and outlet joints 8 are respectively connected with the first liquid cooling pipe 9 and the second liquid cooling pipe 10.

Furthermore, after the liquid inlet joint and the liquid outlet joint of the liquid inlet and outlet joint are in butt-inserting communication, the circulation pipeline of the liquid cooling system is communicated.

The liquid inlet joint and the liquid outlet joint are communicated in a mode that:

step S11: aligning the thrust pin 807 of the inlet fitting with the arcuate slot 818 on the movable sleeve 811;

step S12: applying external force to enable the liquid outlet channel 814 of the liquid outlet joint to be inserted into the liquid inlet channel 802 of the liquid inlet joint, wherein the liquid inlet joint is communicated with the liquid outlet joint; simultaneously, the inlet joint push pin 807 slides along the arcuate notch 818 to a first limit point 820;

step S13: when the external force is removed, the liquid outlet joint and the liquid inlet joint are separated from each other under the elastic force action of the first elastic element 804 and the second elastic element 816; the push-aid pin 807 slides along the linear slot 819 from the first limit point 820 to the second limit point 821; the liquid inlet joint and the liquid outlet joint are inserted;

step S14: when the liquid inlet joint and the liquid outlet joint are required to be separated, an external force is applied to enable the liquid inlet joint and the liquid outlet joint to move oppositely, and the boosting pin 807 slides from the second limit point 821 to the first limit point 820; the movable sleeve 811 is rotated to enable the boosting pin 807 to slide along the arc-shaped notch 818, the external force is released, and the liquid outlet joint is pulled out from the liquid inlet channel 802 of the liquid inlet joint under the elastic thrust of the first elastic piece 804 and the second elastic piece 816; the liquid outlet joint is separated from the liquid inlet joint.

In step S11, the inlet joint is aligned with the outlet joint axis, and the movable sleeve 811 is rotated to align the boost pin 807 with the end of the arc-shaped notch 818.

In the step S12, when the liquid inlet joint and the liquid outlet joint move in opposite directions under the action of the external force, that is, in the process that the liquid outlet channel 814 of the liquid outlet joint is inserted into the liquid inlet channel 802:

the liquid outlet joint is contacted and extruded with the liquid inlet valve block 803, and the liquid outlet joint metal base 815 pushes the liquid inlet valve block 803 to move rightwards and compress the first elastic element 804; the liquid inlet valve block 803 is separated from the first elastic inner resistance check ring 805 and the elastic outer resistance check ring 806, and the liquid inlet channel 802 is opened;

meanwhile, the left end of the circular pushing platform 808 of the liquid inlet joint is in contact with the liquid outlet valve block 812 for extrusion, and the circular pushing platform 808 pushes the liquid outlet valve block 812 to move leftwards and compress the second elastic member 816; the liquid outlet valve block 812 is separated from the second elastic internal resistance retainer ring 813 and the liquid outlet channel 814, and the liquid outlet channel 814 is opened;

the cooling liquid can flow into the liquid inlet channel 802 through the liquid outlet channel 814, so that the liquid inlet joint is communicated with the liquid outlet joint.

In step S13, when the push-aid pin 807 is located at the second restriction point 821, the liquid inlet joint and the liquid outlet joint are still in a communication state, that is, the first elastic member 804 and the second elastic member 816 are in a compression state, and both the liquid inlet channel 802 and the liquid outlet channel 814 are in an open state.

In the step S14, when the liquid outlet joint is pulled out of the liquid inlet joint, that is, the liquid inlet channel 802 is separated from the liquid outlet channel 814, the liquid inlet valve block 803 is reset under the elastic action of the first elastic member 804 to re-block the liquid inlet channel 802, and the liquid outlet valve block 812 is reset under the elastic action of the second elastic member 816 to re-block the liquid outlet channel 814.

During the process of inserting, connecting and pulling out the liquid inlet joint and the liquid outlet joint, on one hand, under the action of the first elastic element 804 and the second elastic element 816, the liquid inlet valve block 803 keeps jointed with the liquid outlet channel 814, and the liquid outlet valve block 812 keeps jointed with the circular pushing platform 808. On the other hand, the outer surface of the liquid outlet joint metal base 815 is always in pressing contact with the elastic outer check ring 806.

The liquid inlet and outlet joint can ensure that cooling liquid only flows between the liquid outlet channel 814 and the liquid inlet channel 802 of the metal matrix and cannot seep out of the liquid outlet joint and the liquid inlet joint.

The phased array antenna liquid cooling plate joint formed by the liquid outlet joint and the liquid inlet joint has the advantages of compact integral structure, high reliability, good water tightness and simple and labor-saving operation. Meanwhile, the method has better adaptability to vibration, impact and other environments.

Further, in the step S2, the cooling process of the antenna by the cooling liquid in the liquid cooling plate 1 includes:

step S21: cooling liquid flows into the liquid cooling plate 1 from the liquid inlet 101; specifically, the liquid cooling plate 1 is fixedly connected with the adapter 6, and an internal channel of the adapter 6 is communicated with the liquid inlet 101 of the liquid cooling plate 1; the adapter 6 is communicated with the liquid cooling system.

Step S22: cooling liquid flows into the water diversion cavity 104 of the liquid cooling plate 1 from the liquid inlet 101 and is diverted to the parallel flow channel 106 through the water diversion cavity 104; the phased array antenna mounted on the liquid cooling plate 1 can be cooled while the coolant flows through the parallel flow channels 106;

specifically, a first radio frequency channel 103 is arranged on the metal base body in the middle of the adjacent parallel flow channels 106, a radio frequency coaxial connector 4 is installed in the first radio frequency channel 103, and two ends of the radio frequency coaxial connector 4 are respectively connected with the antenna radiation unit and the TR component 3.

During heat exchange, the cooling liquid in the parallel flow channel 106 exchanges heat with the metal base body, the metal base body exchanges heat with the radio frequency coaxial connector 4, the radio frequency coaxial connector 4 exchanges heat with the antenna radiation unit and the TR component 3, and finally the phased array antenna is cooled.

Step S23: the cooling liquid after cooling and heat exchange flows out from the parallel flow passage 106, flows through the water converging cavity 107, is converged to the liquid outlet 102 through the water converging cavity 107, and finally flows out from the liquid outlet 102.

In the steps S22 and S23, a plurality of spoilers 105 are respectively arranged in the water diversion cavity 104 and the water collection cavity 107; when the cooling liquid circulates in the water diversion cavity 104 and the water collection cavity 107, the turbulence generator 105 in the water diversion cavity 104 can uniformly disperse the cooling liquid into the plurality of parallel flow channels 106; the turbulators 105 in the water collection chamber 107 are capable of pooling the cooling fluid at the outlet 102.

Further, the turbulator 105 can enable the cooling liquid to flow in the cavity in an unordered manner, can enable the cooling liquid to be evenly distributed to the parallel flow channels 106, and meanwhile enables the fluid to enter a turbulent flow state, so that the heat exchange efficiency between the cooling liquid and the metal cavity is further improved.

Further, the parallel flow channel 106 connecting the water diversion cavity 104 and the water collection cavity 107 is divided into two layers of flow channels: a lower layer of parallel flow channels 106-1 and an upper layer of parallel flow channels 106-2. The distance between the two layers of the flow channels of the lower layer parallel flow channel 106-1 and the upper layer parallel flow channel 106-2 is 2mm, so that the heat exchange area of the liquid and the metal substrate in the heat exchange working area in unit volume is increased to the maximum.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims (9)

1. A liquid-cooled phased array antenna, comprising: the antenna comprises an antenna disc (2), a TR component (3), a radio frequency coaxial connector (4) and a liquid cooling system; the liquid cooling system comprises a liquid cold source, a liquid inlet pipeline, a liquid cooling plate (1) and a liquid return pipeline which are connected in sequence; the liquid cooling source is used for providing cooling liquid required by cooling heat exchange; the liquid inlet pipeline is used for injecting cooling liquid into the liquid cooling plate (1); the liquid return pipeline is used for recovering the cooling liquid after heat exchange in the liquid cooling plate (1); a first radio frequency channel (103) for installing a radio frequency coaxial connector (4) is arranged on the liquid cooling plate (1); the cooling liquid in the liquid cooling plate (1) can cool and radiate the phased array antenna;

the number of the first radio frequency channels (103) is multiple, and the first radio frequency channels (103) are distributed on the liquid cooling plate (1) in an array manner;

the main body of the liquid cooling plate (1) is a metal substrate with an internal cavity, and the internal cavity of the liquid cooling plate is used for circulating cooling liquid; the internal cavity includes: a water diversion cavity (104), a parallel flow passage (106) and a water collection cavity (107); the parallel flow channels (106) are a plurality of linear flow channels which are arranged in parallel; the water diversion cavity (104) and the water collection cavity (107) are arranged on two sides of the parallel flow channel (106), and the water diversion cavity (104) is communicated with the water collection cavity (107) through the parallel flow channel (106);

a liquid inlet (101) and a liquid outlet (102) are arranged at two ends of the liquid cooling plate (1), and the liquid inlet (101) and the liquid outlet (102) are communicated with the inner cavity and used for realizing the inflow and outflow of cooling liquid; one end of the water diversion cavity (104) is communicated with the liquid inlet (101), and the other end is communicated with the parallel flow channel (106); one end of the water converging cavity (107) is communicated with the parallel flow channel (106), and the other end is communicated with the liquid outlet (102);

a group of parallel flow channels (106) are arranged between every two rows of first radio frequency channels (103);

the parallel flow channel (106) connecting the water diversion cavity (104) and the water collection cavity (107) is divided into two layers of flow channels: a lower layer parallel flow passage (106-1) and an upper layer parallel flow passage (106-2);

spoilers (105) which penetrate through the cavities and are arranged in disorder are processed in the water diversion cavity (104) and the water collection cavity (107); the spoiler (105) is a columnar structure communicating the upper surface and the lower surface of the cavity;

the liquid cooling system includes: the intelligent liquid cooling system comprises a liquid cooling plate (1), a liquid inlet pipeline, a liquid return pipeline, a liquid inlet monitor, a liquid return monitor, a liquid cold source and an intelligent microcontroller;

a liquid inlet monitor is arranged on the liquid inlet pipeline and used for monitoring the temperature, flow and pressure of the cooling liquid in the inflow liquid cooling plate (1); a liquid return detector is arranged on the liquid return pipeline and used for monitoring the temperature and the pressure of the cooling liquid of the effluent liquid cooling plate (1);

the liquid cooling source includes inside: the variable-frequency circulating pump provides power for circulation of cooling liquid, and the electronic expansion valve can adjust the liquid inlet flow of the liquid inlet pipeline according to instructions of the intelligent microcontroller.

2. The liquid-cooled phased array antenna of claim 1, wherein the liquid-cooled system further comprises: a controller; the controller is used for controlling the working state of the liquid cooling system.

3. The liquid-cooled phased array antenna of claim 2, characterized in that the first radio frequency channel (103) penetrates through the metal matrix of the liquid-cooled plate (1).

4. A liquid-cooled phased array antenna as claimed in claim 3, characterized in that said antenna disc (2) is provided with a plurality of antenna radiating elements distributed in an array; a second radio frequency channel is arranged on the antenna radiation unit; a third radio frequency channel (306) is arranged on the TR component (3); and two ends of the radio frequency coaxial connector (4) are in signal connection with the antenna radiation unit and the TR component (3) through a second radio frequency channel and a third radio frequency channel (306).

5. Liquid-cooled phased array antenna according to claim 4, characterized in that the antenna disc (2) is fixedly connected to the metal substrate of the liquid-cooled plate (1).

6. The liquid-cooled phased array antenna of claim 4, characterized in that the TR element (3) is provided in plurality, and a plurality of TR elements (3) are arranged in parallel.

7. The liquid-cooled phased array antenna of claim 6, wherein the TR element (3) is externally sleeved with a support structure (7).

8. The liquid-cooled phased array antenna of claim 7, characterized in that the support structure (7) is screwed to the TR element (3); and the supporting structure (7) is fixedly connected with the metal matrix of the liquid cooling plate (1).

9. A method of cooling a liquid-cooled phased array antenna as claimed in any one of claims 1 to 8, comprising the steps of:

step S1: flowing the coolant of the liquid cooling system into the liquid cooling plate (1);

step S2: cooling and heat exchanging are carried out on the phased array antenna on the liquid cooling plate (1) by cooling liquid flowing through the liquid cooling plate (1); the heat exchange process is as follows: the cooling liquid in the liquid cooling plate (1) exchanges heat with the metal matrix; the metal substrate is in heat exchange with the antenna disc (2), the TR component (3) and the radio frequency coaxial connector (4); the radio frequency coaxial connector (4) exchanges heat with the antenna radiation unit and the TR component (3) to complete cooling of the phased array antenna;

and step S3: and (3) the cooling liquid flows back to the liquid cooling source through the liquid return pipeline, and the steps S1 and S2 are repeated.

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