CN114690367A - A thermal control device for reflective mirrors of ground optical facilities - Google Patents

Abstract

The invention discloses a thermal control device for a reflector of a ground optical facility, which comprises a central heat dissipation groove, a substrate, a gasket, a thermal control pipe, a mirror base, a peripheral heat dissipation plate, a heat dissipation plate support, a temperature sensor, a controller and a thermal control water tank, wherein the central heat dissipation groove is arranged on the central heat dissipation groove; the bottom of the lens base is fixedly provided with a substrate; the base plate is fixedly provided with a central heat dissipation groove at one side away from the mirror base, and is circumferentially and fixedly provided with three peripheral heat dissipation plates at one side towards the mirror base; a heat dissipation plate support is fixedly arranged between the peripheral heat dissipation plate and the substrate; temperature sensors are arranged on the back of the reflector, the inner surface of the central heat dissipation groove and the inner surface of the peripheral heat dissipation plate; a heat control pipe is fixedly arranged on each peripheral heat dissipation plate and is communicated with the heat control water tank; the controller is connected with each temperature sensor and the thermal control water tank. The thermal control device has the advantages of simple operation, uniform temperature and good stability.

Description

A thermal control device for reflective mirrors of ground optical facilities

technical field

The invention relates to the technical field of thermal control of ground optical facilities, in particular to a thermal control device for a reflector of ground optical facilities.

Background technique

With the continuous development of optical engineering technology, higher requirements are put forward for the temperature control of ground optical facilities, especially laser communication terminals. Because laser communication technology works near the diffraction limit and receives weak energy, it is sensitive to the stability and uniformity of ambient temperature. The thermal control of traditional ground optical facilities mainly adopts technical means such as thermal conduction components and heat insulation boards, which has technical advantages such as economy, simple operation, and uniform temperature, but has disadvantages such as small temperature control range and slow temperature control speed. However, some ground optical facilities adopt heating sheets and bonding temperature sensors, which have technical advantages such as rapid temperature control and wide temperature control range, but have disadvantages such as complicated operation, uneven temperature, and poor stability.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a thermal control device for a reflective mirror of a ground optical facility, which has the advantages of simple operation, uniform temperature and good stability.

The present invention adopts following concrete technical scheme:

A thermal control device for a reflector of a ground optical facility, located between the reflector and a base, the thermal control device includes a central heat dissipation groove, a substrate, a gasket, a heat control pipe, a mirror seat, a peripheral heat dissipation plate, a heat dissipation Board support, temperature sensor, controller, and thermal control water tank;

The top of the mirror base is used to install the reflector, and the bottom is fixedly mounted with the base plate;

The base plate is fixedly installed with the central heat dissipation groove on the side away from the mirror base, and three peripheral heat dissipation plates are fixedly installed in the circumferential direction on the side facing the mirror base;

The heat dissipation plate support is fixedly installed between the peripheral heat dissipation plate and the base plate;

A thermal radiation interval is maintained between the reflector, the central heat dissipation groove and the peripheral heat dissipation plate, and heat exchange is performed between the reflector, the central heat dissipation groove and the peripheral heat dissipation plate through thermal radiation;

The temperature sensor is arranged on the back of the reflector, the inner surface of the central heat dissipation groove, and the inner surface of the peripheral heat dissipation plate;

One of the thermal management tubes is fixedly installed on each of the peripheral heat dissipation plates, and heat exchange is performed between the thermal management tube and the peripheral heat dissipation plate through convection, and between the thermal management tube and the reflector heat exchange by thermal radiation;

the thermal control pipe is communicated with the thermal control water tank, and is used for circulating a cooling medium between the thermal control pipe and the thermal control water tank;

The controller is connected with each of the temperature sensors and the thermal control water tank, and is used for controlling the temperature of the cooling medium in the thermal control water tank according to the temperature signal of the temperature sensor;

The gasket is a closed annular structure sleeved on the circumference of the mirror base, and is provided with a groove for the inlet and outlet of the thermal control tube to pass through, for connecting the front system and the mirror housing;

The central heat sink, the substrate, and the temperature sensor form a central thermal control structure;

The substrate, the peripheral heat dissipation plate, the heat dissipation plate support and the temperature sensor form a peripheral thermal control structure;

The thermal control tube, the thermal control water tank, the temperature sensor, and the controller form a pipeline thermal control structure.

Further, the three peripheral heat dissipation plates are evenly distributed along the circumferential direction of the base plate.

Further, the temperature sensor is provided at the center of the back of the reflector and the periphery of the back.

Further, the distance between the central heat sink and the reflector is less than or equal to 20mm;

The distance between the peripheral heat dissipation plate and the reflector is less than or equal to 5mm;

The distance between the thermal control tube and the reflector is greater than or equal to 5 mm.

Further, the central heat dissipation groove is fixedly mounted on the base plate by alloy steel screws.

Further, the peripheral heat dissipation plate is fixedly mounted on the heat dissipation plate support through alloy steel screws;

The heat dissipation plate support is fixedly mounted on the base plate through alloy steel screws.

Further, the central heat dissipation groove, the base plate, the peripheral heat dissipation plate and the support of the heat dissipation plate are all made of 2A12 aluminum alloy material, and are treated by an oxidation dyeing process.

Further, the thermal control tube is fixedly installed on the peripheral heat dissipation plate through a tube clip;

The distance between the tube clip and the reflector is greater than or equal to 5 mm.

Further, the tube clip is fixedly installed on the peripheral heat dissipation plate by alloy steel screws.

Further, the inlet and outlet of the thermal control pipe are connected to the thermal control water tank through a hose.

Beneficial effects:

The thermal control device of the present invention is used for the reflection mirror of ground optical facilities, and includes a central thermal control structure formed by a central heat dissipation groove, a base plate, and a temperature sensor, and a peripheral thermal control structure formed by the base plate, a peripheral heat dissipation plate, a heat dissipation plate support and a temperature sensor. structure, and a pipeline thermal control structure formed by a thermal control tube, a thermal control water tank, a temperature sensor, and a controller; the heat in the central area of the ground optical facility reflector is transferred by radiation from the central thermal control structure; the ground optical facility reflector The heat in the surrounding area is exchanged by radiation through the surrounding thermal control structure; the bottom of the optical facility reflector on the ground and the surrounding heat dissipation plate are exchanged by convection and radiation through the pipeline thermal control structure; the temperature sensor is used as a feedback element, and the thermal control tube is used as a feedback element to communicate with the surrounding area. The direct contact of the thermal control structure indirectly adjusts the temperature of the central thermal control structure; the use of the central thermal control structure, the peripheral thermal control structure and the pipeline thermal control structure improves the operability of the thermal control device and effectively ensures the laser communication terminal. Therefore, the thermal control device using the above structure can effectively reduce the influence of the environmental temperature change on the reflector of the ground optical facility, and can also make the temperature distribution of the reflector more uniform, which solves the problem of existing The technical problems of complex operation, uneven temperature and poor stability in the technology significantly reduce the wavefront difference of the optical system caused by changes in ambient temperature and uneven heating of the mirror; improve the ability of the laser communication system to capture and track targets , the reliability of technologies such as receiving and converting signals.

Description of drawings

Fig. 1 is the top-view structure schematic diagram of the thermal control device for ground optical facility reflector of the present invention;

Fig. 2 is the bottom view structure schematic diagram of the thermal control device in Fig. 1;

3 is a schematic structural diagram of the thermal control device in FIG. 2 when a lens barrel is installed;

Fig. 4 is the A-A sectional structure schematic diagram of the thermal control device in Fig. 3;

FIG. 5 is a schematic diagram of a thermal control principle of a laser communication terminal using a thermal control device.

Among them, 1-central cooling groove, 2-substrate, 3-gasket, 4-thermal control tube, 5-mirror seat, 6-peripheral cooling plate, 7- cooling plate support, 8-reflector, 9-tube clip, 10- mirror housing, 11- lens barrel, 12- temperature sensor, 13- controller, 14- thermal control water tank

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

The embodiment of the present invention provides a thermal control device for the reflector 8 of a ground optical facility, and the ground optical facility can be a laser communication terminal or the like; the thermal control device is located between the reflector 8 and the base, and the base is a thermal control device. The installation base of the control device and the reflector 8;

1, FIG. 2, FIG. 3 and FIG. 4, FIG. 1 is a bottom view of the structure in FIG. 2, FIG. 2 is the state when the mirror 8 is in operation, and FIG. 3 is the structure of the thermal control device equipped with the lens barrel 11 4 is a schematic diagram of the cross-sectional structure of the section A-A in FIG. 3; the thermal control device includes a central heat dissipation slot 1, a substrate 2, a gasket 3, a thermal control tube 4, a mirror base 5, a peripheral heat dissipation plate 6, a heat dissipation plate support 7, temperature sensor 12, controller 13 and thermal control water tank 14;

As shown in the structure of FIG. 4 , the top of the mirror base 5 is used to install the reflector 8, and the bottom is fixedly installed with the base plate 2; the base plate 2 can be fixedly installed on the mirror base 5 through alloy steel screws; the reflector 8 is used to reflect the light on the side The surface is a reflective surface, and the side surface opposite to the reflective surface is the back of the mirror 8, and the back of the mirror 8 faces the base;

As shown in the structure of FIG. 4 , the base plate 2 is fixedly installed with a central heat dissipation groove 1 on the side away from the mirror base 5 , and three peripheral heat dissipation plates 6 are fixedly installed in the circumferential direction on the side facing the mirror base 5 ; the base plate 2 is provided with a center Through hole, one end of the central heat dissipation slot 1 can be supported on the base, and the other end extends into the central through hole of the base plate 2 and is arranged opposite the back of the reflector 8; The screws are fixedly mounted on the base plate 2; the three peripheral heat dissipation plates 6 are evenly distributed along the circumferential direction of the base plate 2, that is, the three peripheral heat dissipation plates 6 are evenly distributed at 120° in the same plane;

As shown in the structure of FIG. 1, a heat dissipation plate support 7 is fixedly installed between the peripheral heat dissipation plate 6 and the base plate 2, that is, a heat dissipation plate support 7 corresponding to the three peripheral heat dissipation plates 6 is arranged on the base plate 2; The heat dissipation plate 6 can be fixedly installed on the heat dissipation plate support 7 through alloy steel screws; the heat dissipation plate support 7 can be fixedly installed on the base plate 2 through alloy steel screws; the heat dissipation plate support 7 can be a support block, a support plate or a support bar;

As shown in the structure of FIG. 4 , a thermal radiation interval is maintained between the reflector 8 and the central heat dissipation slot 1 and the peripheral heat dissipation plate 6, and heat exchange is performed between the reflector 8 and the central heat dissipation groove 1 and the peripheral heat dissipation plate 6 through thermal radiation, Take away the heat generated by the reflector 8, thereby reducing the temperature of the reflector 8 itself and the ambient temperature; the distance between the central cooling groove 1 and the reflector 8 is less than or equal to 20mm, such as: 5mm, 10mm, 15mm, 20mm; peripheral heat dissipation The distance between the plate 6 and the mirror 8 is less than or equal to 5mm, such as: 2mm, 3mm, 4mm, 5mm;

A temperature sensor 12 is provided on the back of the reflector 8, the inner surface of the central heat dissipation groove 1, and the inner surface of the peripheral heat dissipation plate 6; a temperature sensor 12 is provided on the center of the back of the reflector 8 and the periphery of the back; 12 can detect the back center temperature of the reflector 8, the back peripheral temperature of the reflector 8, the inner surface temperature of the center heat sink 1 and the inner surface temperature of the peripheral heat dissipation plate 6, and the temperature signal detected by the temperature sensor 12 is sent to the controller 13;

One thermal control tube 4 is fixedly installed on each peripheral heat dissipation plate 6, that is, three thermal control tubes 4 are arranged in one-to-one correspondence with the peripheral heat dissipation plate 6, and the three thermal control tubes 4 form 120 in the same plane. °Evenly distributed; the thermal control tube 4 is in contact with the peripheral heat dissipation plate 6 through convection heat exchange, and the thermal control tube 4 and the reflector 8 conduct heat exchange through thermal radiation; the thermal control tube 4 is fixedly installed on the The peripheral heat dissipation plate 6; the tube clip 9 is fixedly installed on the peripheral heat dissipation plate 6 through alloy steel screws; in the actual production and manufacturing process, the length and angle of the extended pipe of the thermal control tube 4 can be adjusted according to the different placement positions of the tube clip 9 make appropriate adjustments;

The thermal control pipe 4 is communicated with the thermal control water tank 14 for circulating the cooling medium between the thermal control pipe 4 and the thermal control water tank 14; the inlet and outlet of the thermal control pipe 4 are connected to the thermal control water tank 14 through a hose; the thermal control water tank 14 stores a cooling medium, and can cool or heat the cooling medium under the control of the controller 13 to keep the cooling medium at a constant temperature;

The controller 13 is connected with each temperature sensor 12 and the thermal control water tank 14, and is used for controlling the temperature of the cooling medium in the thermal control water tank 14 according to the temperature signal of the temperature sensor 12;

The gasket 3 is a closed annular structure sleeved on the circumference of the mirror base 5, and is provided with a groove for the inlet and outlet of the thermal control tube 4 to pass through, which is used to connect the front system and the mirror housing 10; through the gasket 3 The grooves provided on it can make the two ends of the thermal control tube 4 protrude out of the ground optical facilities, and connect the thermal control water tank 14 through a hose;

The central heat sink 1, the substrate 2, and the temperature sensor 12 form a central thermal control structure;

The substrate 2, the peripheral heat dissipation plate 6, the heat dissipation plate support 7 and the temperature sensor 12 form a peripheral thermal control structure;

The thermal control tube 4, the thermal control water tank 14, the temperature sensor 12, and the controller 13 form a pipeline thermal control structure.

The above-mentioned thermal control device radiates and cools the reflector 8 through the central thermal control structure, the peripheral thermal control structure and the pipeline thermal control structure. The thermal control principle of the reflector 8 can refer to FIG. 5, wherein the thermal control tube 4, the temperature sensor 12, The controller 13 and the thermal control water tank 14 form the active thermal control part of the reflector 8, the substrate 2, the peripheral heat dissipation plate 6, the central heat sink 1 and the mirror base 5 form the passive thermal control part of the reflector 8; the center thermal control structure is dissipated by the center The tank 1, the base plate 2, and the temperature sensor 12 are formed; the peripheral thermal control structure is formed by the base plate 2, the peripheral heat dissipation plate 6, the heat dissipation plate support 7 and the temperature sensor 12; the pipeline thermal control structure is formed by the heat control pipe 4, the heat control water tank 14, The temperature sensor 12 and the controller 13 are formed; the heat in the central area of the ground optical facility reflector 8 is heat exchanged by the central thermal control structure through thermal radiation; the heat in the peripheral area of the ground optical facility reflector 8 is radiated by the peripheral thermal control structure Realize heat exchange; the bottom of the ground optical facility reflector 8 and the surrounding heat dissipation plate 6 conduct heat exchange through heat conduction, convection and heat radiation by the pipeline thermal control structure; through the temperature sensor 12 as a feedback element, through the thermal control tube 4 and the surrounding thermal control The direct contact of the structure indirectly adjusts the temperature of the central thermal control structure; the use of the central thermal control structure, the peripheral thermal control structure and the pipeline thermal control structure improves the operability of the thermal control device and effectively ensures the ground such as the laser communication terminal. The temperature of the optical facility is consistent; therefore, the thermal control device using the above-mentioned structure can reduce the influence of the ambient temperature change on the reflection mirror 8 of the ground optical facility, and can also make the temperature distribution of the reflection mirror 8 more uniform, which solves the problem of the prior art. The technical problems of complex operation, uneven temperature and poor stability in the optical system significantly reduce the wavefront difference of the optical system caused by changes in ambient temperature and uneven heating of the mirror 8; improve the ability of the laser communication system to capture and track targets , the reliability of technologies such as receiving and converting signals.

In the above thermal control device, the central heat sink 1 , the base plate 2 , the peripheral heat sink 6 and the heat sink support 7 are all made of 2A12 aluminum alloy material, and are treated with an oxidation blackening process.

Since the 2A12 aluminum alloy material has the characteristics of good thermal conductivity, the central heat dissipation groove 1, the base plate 2, the peripheral heat dissipation plate 6 and the heat dissipation plate support 7 are all made of 2A12 aluminum alloy material, and are treated with an oxidation and blackening process. The thermal control device has the characteristics of fast heat conduction speed, high heat exchange efficiency and good heat dissipation effect.

Meanwhile, the distance between the thermal control tube 4 and the reflector 8 is greater than or equal to 5 mm; the distance between the tube clip 9 and the reflector 8 is greater than or equal to 5 mm.

In the above thermal control device, the pipeline thermal control structure utilizes convection heat exchange and radiation heat exchange to effectively reduce the influence of ambient temperature changes on the surface shape change of the ground facility reflector; the temperature sensor 12 is used as a feedback element to retain a certain amount of heat. The radiation interval improves the adverse effects of poor active thermal control uniformity; through direct contact with the surrounding thermal control structure, the temperature of the central thermal control structure is indirectly adjusted; the central thermal control structure, the peripheral thermal control structure and the pipeline thermal control structure are used to improve the The operability of the thermal control device is improved, and the temperature consistency of the laser communication terminal is effectively guaranteed.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a thermal control device for ground optical facility reflection mirror, located between the reflection mirror and the base, it is characterized in that, the thermal control device comprises a central cooling groove, a substrate, a gasket, a thermal control tube, a mirror base , Peripheral cooling plate, cooling plate support, temperature sensor, controller and thermal control water tank; The top of the mirror base is used to install the reflector, and the bottom is fixedly mounted with the base plate; The base plate is fixedly installed with the central heat dissipation groove on the side away from the mirror base, and three peripheral heat dissipation plates are fixedly installed in the circumferential direction on the side facing the mirror base; The heat dissipation plate support is fixedly installed between the peripheral heat dissipation plate and the base plate; A thermal radiation interval is maintained between the reflector, the central heat dissipation groove and the peripheral heat dissipation plate, and heat exchange is performed between the reflector, the central heat dissipation groove and the peripheral heat dissipation plate through thermal radiation; The temperature sensor is arranged on the back of the reflector, the inner surface of the central heat dissipation groove, and the inner surface of the peripheral heat dissipation plate; One of the thermal management tubes is fixedly installed on each of the peripheral heat dissipation plates, and heat exchange is performed between the thermal management tube and the peripheral heat dissipation plate through convection, and between the thermal management tube and the reflector heat exchange by thermal radiation; the thermal control pipe is in communication with the thermal control water tank, and is used for circulating a cooling medium between the thermal control pipe and the thermal control water tank; The controller is connected with each of the temperature sensors and the thermal control water tank, and is used for controlling the temperature of the cooling medium in the thermal control water tank according to the temperature signal of the temperature sensor; The gasket is a closed annular structure sleeved on the circumference of the mirror base, and is provided with a groove for the inlet and outlet of the thermal control tube to pass through, for connecting the front system and the mirror housing; The central heat sink, the substrate, and the temperature sensor form a central thermal control structure; The substrate, the peripheral heat dissipation plate, the heat dissipation plate support and the temperature sensor form a peripheral thermal control structure; The thermal control tube, the thermal control water tank, the temperature sensor, and the controller form a pipeline thermal control structure. 2 . The thermal control device according to claim 1 , wherein the three peripheral heat dissipation plates are evenly distributed along the circumference of the base plate. 3 . 3 . The thermal control device according to claim 1 , wherein the temperature sensor is provided at the center of the back and the periphery of the back of the reflector. 4 . 4. The thermal control device according to claim 1, wherein the distance between the central heat dissipation groove and the reflector is less than or equal to 20 mm; The distance between the peripheral heat dissipation plate and the reflector is less than or equal to 5mm; The distance between the thermal control tube and the reflector is greater than or equal to 5 mm. 5 . The thermal control device according to claim 1 , wherein the central heat dissipation groove is fixedly mounted on the base plate by alloy steel screws. 6 . 6 . The thermal control device according to claim 1 , wherein the peripheral heat dissipation plate is fixedly mounted on the heat dissipation plate support through alloy steel screws; 6 . The heat dissipation plate support is fixedly mounted on the base plate through alloy steel screws. 7 . The thermal control device according to claim 1 , wherein the central heat sink, the base plate, the peripheral heat sink and the heat sink support are all made of 2A12 aluminum alloy material. 8 . It is processed by oxidation blackening process. 8. The thermal control device according to any one of claims 1 to 6, wherein the thermal control tube is fixedly mounted on the peripheral heat dissipation plate through a tube clip; The distance between the tube clip and the reflector is greater than or equal to 5 mm. 9 . The thermal control device according to claim 8 , wherein the tube clip is fixedly mounted on the peripheral heat dissipation plate by alloy steel screws. 10 . 10 . The thermal control device according to claim 8 , wherein the inlet and outlet of the thermal control pipe are connected to the thermal control water tank through a hose. 11 .

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