CN-121977380-A - Heat exchanger in thermal vacuum environment equipment

CN121977380ACN 121977380 ACN121977380 ACN 121977380ACN-121977380-A

Abstract

The invention relates to a heat exchanger in thermal vacuum environment equipment, which comprises a frame, wherein a heat exchange plate is arranged at the front and back of the top end of the frame in a sliding way, a sliding driving device is arranged between the heat exchange plate and the frame, a plurality of heat exchange channels are arranged in the heat exchange plate, a flow distribution cavity and a flow converging cavity are respectively arranged at the left side and the right side of the back of the heat exchange plate, each heat exchange channel is communicated between the flow distribution cavity and the flow converging cavity, the bending forms of a corrugated inlet pipe and a corrugated outlet pipe can be kept controllable in real time during the process of sliding the heat exchange plate back and forth to switch different stations, the bending radiuses and the stress distribution of the corrugated inlet pipe and the corrugated outlet pipe can be kept uniform in real time, and the fatigue service lives of the corrugated inlet pipe and the corrugated outlet pipe can be prolonged.

Inventors

WANG XIAOBING
WANG XUDONG
ZHANG MEIYU
LI PEIHONG
WANG YUNFEI
LI MINGLIANG
XI XIAOJING

Assignees

福建建壹真空科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260407

Claims (10)

1. A heat exchanger in a thermal vacuum environment apparatus, comprising: The heat exchange device comprises a frame (1), wherein a heat exchange plate (2) is arranged on the top end of the frame (1) in a front-back sliding manner, a sliding driving device is arranged between the heat exchange plate (2) and the frame (1), a plurality of heat exchange channels (3) are arranged in the heat exchange plate (2), a flow distribution cavity (4) and a flow converging cavity (5) are respectively arranged on the left side and the right side of the rear of the heat exchange plate (2), and each heat exchange channel (3) is communicated between the flow distribution cavity (4) and the flow converging cavity (5); A bearing transverse beam shape-holding device is arranged on the frame (1) and located below the heat exchange plate (2) in a lifting manner, a vertical constant driving device is arranged between the bearing transverse beam shape-holding device and the frame (1), and a displacement detection device is arranged between the frame (1) and the heat exchange plate (2); The device comprises a distribution cavity (4), a corrugated inlet pipe (6), a corrugated outlet pipe (7), a heat exchange plate (2) and a heat exchange plate (7), wherein one end of the corrugated inlet pipe (6) is communicated with the distribution cavity (4), one end of the corrugated outlet pipe (7) is communicated with the converging cavity (5), and the other end of the corrugated inlet pipe (6) and the other end of the corrugated outlet pipe (7) are fixedly arranged at a preset position behind the heat exchange plate (2) between the support transverse beam shape-holding device; Initially, the corrugated inlet pipe (6) and the corrugated outlet pipe (7) are contacted with the inner top end surface of the bearing transverse beam shape-holding device to form a first contact point and a second contact point respectively, the corrugated inlet pipe (6) is divided into a first arc section and a second arc section from front to back by the first contact point, the corrugated outlet pipe (7) is divided into a third arc section and a fourth arc section from front to back by the second contact point, and the corrugated inlet pipe (6) and the corrugated outlet pipe (7) are matched with the inner wall of the bearing transverse beam shape-holding device and are transversely restrained by the bearing transverse beam shape-holding device; the vertical constant driving device is used for driving the bearing transverse beam shape-holding device to synchronously descend according to the horizontal displacement of the heat exchange plate (2) detected by the displacement detection device relative to the frame (1) during the process of sliding the heat exchange plate (2) back and forth to switch different stations, so as to simultaneously bear and transversely restrain the inlet corrugated pipe (6) and the outlet corrugated pipe (7) in real time under the cooperation of the vertical constant driving device and the bearing transverse beam shape-holding device, so as to keep the bending form of the inlet corrugated pipe (6) and the bending form of the outlet corrugated pipe (7) in respective vertical planes in real time, and keep the sag of the first arc section of the inlet corrugated pipe (6), the second arc section of the inlet corrugated pipe (6), the third arc section of the outlet corrugated pipe (7) and the fourth arc section of the outlet corrugated pipe (7) in a preset range relative to the initial time.
2. The heat exchanger in the thermal vacuum environment equipment according to claim 1, wherein the bearing transverse beam shape holding device comprises a bearing plate (8), the bearing plate is arranged on the frame (1) in a lifting mode and located below the heat exchange plate (2), first transverse beam plates (9) are arranged on the top end face of the bearing plate (8) and located on two sides of the corrugated inlet pipe (6), a first shape holding cavity (10) is arranged between the two first transverse beam plates (9), second transverse beam plates (11) are arranged on the top end face of the bearing plate (8) and located on two sides of the corrugated outlet pipe (7), and a second shape holding cavity (12) is arranged between the two second transverse beam plates (11).
3. The heat exchanger in the thermal vacuum environment equipment according to claim 1, wherein the vertical constant driving device comprises a containing box (13), the containing box (13) is arranged on the frame (1) and located below the bearing transverse beam shape-holding device, a first telescopic piece (14) is arranged between the containing box (13) and the bearing transverse beam shape-holding device, a vertical constant driving plate (15) is arranged between the first telescopic piece (14) and the bearing transverse beam shape-holding device, a plurality of guide columns (16) are arranged on the frame (1) at equal angular intervals, the guide columns (16) penetrate through the vertical constant driving plate (15), and the guide columns (16) are located on the outer side of the bearing transverse beam shape-holding device.
4. A heat exchanger in a thermal vacuum environment according to claim 1, wherein the displacement detecting means comprises a laser emitter (17) arranged on the frame (1), a receiver (18) is arranged on the frame (1) and positioned on one side of the laser emitter (17), and a reflecting target (19) is arranged in front of the bottom end face of the heat exchanging plate (2).
5. The heat exchanger in the thermal vacuum environment equipment according to claim 1, wherein the sliding driving device comprises a protection ring plate (20), the protection ring plate is arranged outside the heat exchange plate (2), linear sliding rails (21) are arranged between the left side and the right side of the bottom end surface of the protection ring plate (20) and the frame (1), a second telescopic piece (22) is arranged at the middle position of the front end of the frame (1), and a sliding driving frame (23) is arranged between the second telescopic piece (22) and the protection ring plate (20).
6. The heat exchanger in the thermal vacuum environment equipment according to claim 2, wherein the supporting transverse beam shape-holding device is provided with a flexible beam self-adapting slow suction device; The flexible beam self-adapting slow suction device is used for flexibly restraining the inlet corrugated pipe (6) and the outlet corrugated pipe (7) during the period that the vertical constant driving device drives the bearing transverse beam shape-holding device to descend according to the horizontal displacement of the heat exchange plate (2) detected by the displacement detection device relative to the frame (1); The flexible beam self-adapting slow suction device is used for carrying out self-adapting guiding and gap compensation on the inlet corrugated pipe (6) and the outlet corrugated pipe (7) simultaneously during the period that the vertical constant driving device drives the bearing transverse beam shape-holding device to descend according to the horizontal displacement of the heat exchange plate (2) relative to the frame (1) detected by the displacement detection device; The flexible beam self-adapting slow suction device is used for buffering and absorbing impact energy generated by the corrugated inlet pipe (6) and the corrugated outlet pipe (7) during the period that the vertical constant driving device drives the bearing transverse beam shape-holding device to descend according to the horizontal displacement of the heat exchange plate (2) detected by the displacement detection device relative to the frame (1).
7. The heat exchanger in the thermal vacuum environment equipment according to claim 6, wherein the soft-bundle self-adapting and absorbing device comprises a first coating layer (24) which is arranged on the top end surface of the supporting plate (8) and is positioned in the first shape holding cavity (10), a second coating layer (25) is arranged on the top end surface of the supporting plate (8) and is positioned in the second shape holding cavity (12), a third coating layer (26) is arranged on the inner wall of the first transverse beam plate (9), a fourth coating layer (27) is arranged on the inner wall of the second transverse beam plate (11), a first flexible bristle layer (28) is arranged above the inner wall of the third coating layer (26), the first flexible bristle layer (28) is arranged along the front-back direction of the first transverse beam plate (9), a second flexible bristle layer (29) is arranged above the inner wall of the fourth coating layer (27), and the second flexible bristle layer (29) is arranged along the front-back direction of the second transverse beam plate (11).
8. A heat exchanger in a thermal vacuum environment according to claim 7, wherein the first flexible bristle layer (28) is a stainless steel wire bristle layer or a polyimide fiber bristle layer, and the second flexible bristle layer (29) is a stainless steel wire bristle layer or a polyimide fiber bristle layer; The first coating (24), the second coating (25), the third coating (26) and the fourth coating (27) are molybdenum disulfide coatings or polytetrafluoroethylene coatings.
9. A heat exchanger in a thermal vacuum environment according to claim 6, characterized in that a plurality of heating wires (30) are arranged inside the heat exchange plate (2) and below between a plurality of the heat exchange channels (3), and a temperature sensor (31) is arranged inside the heat exchange plate (2) and below between a plurality of the heat exchange channels (3).
10. The heat exchanger in a thermal vacuum environment according to claim 6, wherein the top end face of the heat exchange plate (2) is provided with fixing means; The fixing device comprises a plurality of fastening holes (32) which are formed in the top end face of the heat exchange plate (2), and bolts are arranged on the heat exchange plate (2) and located in the fastening holes (32).

Description

Heat exchanger in thermal vacuum environment equipment Technical Field The invention relates to the field of heat exchangers, in particular to a heat exchanger in thermal vacuum environment equipment. Background The thermal vacuum environment equipment is a large-scale scientific test and test equipment which is specially used for simulating extreme environments such as space high vacuum, cold black heat sink, solar radiation and the like. Thermal vacuum environmental devices play an important role in aerospace engineering, materials science and physical research. In a thermal vacuum environment, a heat exchanger is a critical core component. The heat exchanger in the existing thermal vacuum environment equipment has the following defects: The situation that the corrugated inlet pipe and the corrugated outlet pipe scratch the heat sink black paint coating on the inner wall of the thermal vacuum environment equipment caused by no support of the corrugated inlet pipe and the corrugated outlet pipe during the process of sliding the heat exchange plate back and forth to switch different stations cannot be prevented, the service life of the heat sink black paint coating on the inner wall of the thermal vacuum environment equipment cannot be prolonged, and the stability of the performance of the heat sink black paint coating on the inner wall of the thermal vacuum environment equipment cannot be ensured; The heat exchange plate can not prevent the inlet corrugated pipe and the outlet corrugated pipe from transversely swinging and unstably or winding between the inlet corrugated pipe and the outlet corrugated pipe due to no transverse constraint during the process of switching different stations, can not prevent the inlet corrugated pipe and the outlet corrugated pipe from generating uncontrollable friction, impact and vibration due to displacement change, can not prevent the inlet corrugated pipe and the outlet corrugated pipe from violently shaking or leaking in the process of conveying liquid nitrogen, can not improve the safety of the inlet corrugated pipe and the outlet corrugated pipe when conveying the liquid nitrogen, and can not reduce the fatigue damage of the inlet corrugated pipe and the outlet corrugated pipe when conveying the liquid nitrogen; the bending forms of the corrugated inlet pipe and the corrugated outlet pipe cannot be kept controllable in real time during the process that the heat exchange plates slide back and forth to switch different stations, the bending radiuses and the stress distribution of the corrugated inlet pipe and the corrugated outlet pipe cannot be kept uniform in real time, and the fatigue service lives of the corrugated inlet pipe and the corrugated outlet pipe cannot be prolonged; The situations of local liquid nitrogen flow resistance surge and liquid nitrogen flash evaporation caused by dead bending of the corrugated inlet pipe and the corrugated outlet pipe cannot be prevented during the process of sliding the heat exchange plate back and forth to switch different stations, the fluency of the liquid nitrogen conveying process of the corrugated inlet pipe and the corrugated outlet pipe cannot be ensured, the effective utilization rate of the liquid nitrogen cannot be improved, and the heat exchange efficiency and the heat exchange quality between the heat exchange plate and a test piece cannot be ensured; The corrugated inlet pipe and the corrugated outlet pipe cannot be prevented from swinging greatly due to the impact of liquid nitrogen during the process of sliding the heat exchange plate back and forth to switch different stations, and the stability and the impact load resistance of the corrugated inlet pipe and the corrugated outlet pipe cannot be improved during the liquid nitrogen conveying process. It is an object of the present invention to devise a heat exchanger in a thermal vacuum environment apparatus which addresses the above-described problems of the prior art. Disclosure of Invention The present invention is directed to providing a heat exchanger in a thermal vacuum environment apparatus that is capable of effectively solving at least one of the problems of the prior art. The technical scheme of the invention is as follows: a heat exchanger in a thermal vacuum environment apparatus, comprising: The heat exchange device comprises a frame, wherein a heat exchange plate is arranged on the top end of the frame in a front-back sliding manner, a sliding driving device is arranged between the heat exchange plate and the frame, a plurality of heat exchange channels are arranged in the heat exchange plate, a flow distribution cavity and a flow converging cavity are respectively arranged on the left side and the right side of the rear part of the heat exchange plate, and each heat exchange channel is communicated between the flow distribution cavity and the flow converging cavity; A bearing transverse beam shape-holding device is arranged on the frame and located