CN215640977U

CN215640977U - Testing device for heat pipe and testing system with testing device

Info

Publication number: CN215640977U
Application number: CN202022306182.9U
Authority: CN
Inventors: 王东燊; 朱智远; 邱家齐; 张晶晶
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Shikong Daoyu Technology Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Shikong Daoyu Technology Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-01-25
Anticipated expiration: 2030-10-16

Abstract

The utility model provides a testing device for a heat pipe and a testing system with the same, and relates to the field of heat pipe performance testing. The testing device for the heat pipe comprises a testing base, a cover plate and a connecting assembly, wherein the testing base is used for bearing the heat pipe; a plurality of through holes are formed in the test base along the height direction of the test base; the cover plate is arranged on the test base, and the bottom of the cover plate is provided with a temperature measuring piece for measuring the surface temperature of the heat pipe; each connecting component penetrates through the corresponding through hole and then is tightly connected with the cover plate, and each connecting component comprises a fastening piece and an elastic piece arranged on the periphery of the fastening piece. When the cover plate is far away from the test base under the action of the traction force F, the fastener can move along with the cover plate and compress the elastic piece; when the traction force F disappears, the cover plate slowly approaches the test base under the action of the elastic piece until the cover plate is in compression joint with the test base. The testing device for the heat pipe provided by the utility model has the advantages of simple structure, convenience in operation and high universality.

Description

Testing device for heat pipe and testing system with testing device

Technical Field

The utility model relates to the technical field of heat pipe performance testing, in particular to a testing device for a heat pipe and a testing system with the testing device.

Background

The heat pipe has the advantages of high heat conductivity coefficient, high temperature uniformity, excellent thermal response characteristic and the like, and is widely applied to the fields of electronic communication, aerospace heat dissipation and the like. In the existing isothermal test of the heat pipe, a method for heating the heat pipe is mainly to stick a heating sheet at one end of the heat pipe, when the heat pipe is tested more, the heating sheet needs to be repeatedly taken off and stuck, the damage of the heating sheet can be caused in the repeated operation process, the process is complicated, and the test efficiency is greatly reduced. Meanwhile, because different heat pipes have different thicknesses, part of the prior art adopts different testing devices to clamp the heat pipes with different thicknesses, and testing results of different testing devices have testing errors; in the prior art, a part of the heat pipes are matched with the heat pipe testing requirements of different sizes through horizontal and vertical position-adjustable components, but the heat pipes of different sizes need to select different models of components in advance, so that the problems of complex operation and complex structure exist.

Therefore, it is desirable to design a testing apparatus for a heat pipe and a testing system having the same, which has a simple structure, is convenient to operate, and has high versatility.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects and shortcomings of the prior art, the utility model provides the testing device for the heat pipe and the testing system with the testing device.

The utility model provides a testing device for a heat pipe, which comprises a testing base, a cover plate and a plurality of connecting assemblies, wherein the testing base is used for bearing the heat pipe, a plurality of through holes are formed in the testing base along the height direction of the testing base, and second protruding parts extend out of the through holes along the inner walls of the through holes in the direction far away from the outer walls of the through holes; the cover plate is arranged on the test base; the connecting components are arranged in one-to-one correspondence with the through holes, and each connecting component is fixedly connected with the cover plate after penetrating through the corresponding through hole; the connecting assembly comprises a fastener and an elastic piece arranged on the periphery of the fastener, and two ends of the elastic piece are respectively abutted against the bottom end of the second protruding part and the bottom end of the fastener; when the cover plate is far away from the test base under the action of traction force F, the fastener can move along with the cover plate and compress the elastic piece; when the traction force F disappears, the cover plate slowly approaches the test base under the action of the elastic piece until the cover plate is in compression joint with the test base.

Further, the testing device for the heat pipe further comprises a base, wherein the base is arranged below the testing base, and the base is fixedly connected with the testing base.

Further, be equipped with on the apron with a plurality of connecting holes that the perforating hole corresponds one by one, the fastener includes along first connecting portion, second connecting portion and the third connecting portion that the fastener top set up to the bottom, first connecting portion the second connecting portion with the external diameter of third connecting portion increases gradually, first connecting portion pass the connecting hole in order with the fastener with apron fastening connection, second connecting portion are located in the elastic component, the top of third connecting portion with the bottom butt of elastic component.

Furthermore, the through hole is further extended with a first protruding portion along the inner wall of the through hole in a direction away from the outer wall of the through hole, the first protruding portion is located below the second protruding portion, and the extension length of the first protruding portion is smaller than that of the second protruding portion.

Further, the first protrusion is in clearance fit with the elastic piece; the through hole is in clearance fit with the third connecting portion, and the bottom end of the first protruding portion is used for limiting the height of the third connecting portion.

Further, the elastic member is a spring constituted by a plurality of spiral turns spirally wound; the fastener is a half-thread bolt, the first connecting portion is a threaded connecting portion, the second connecting portion is a polished rod portion, and the third connecting portion is a bolt countersunk head portion.

Furthermore, the bottom of the cover plate is provided with a temperature measuring part for measuring the surface temperature of the heat pipe, the temperature measuring part comprises a flexible base plate, and a thermocouple is arranged in the flexible base plate.

Furthermore, a heating assembly used for generating heat is arranged in the test base, the heating assembly comprises a heat conduction pad, a heat transfer piece and a heating piece which are sequentially connected in an overlapping mode, and the heat conduction pad is used for bearing the heat pipe and is abutted to the temperature measurement piece.

Further, the heating element is a power resistor.

By adopting the technical scheme, the test base of the heat pipe testing device is provided with the plurality of through holes, the connecting assemblies which are in one-to-one correspondence with the through holes penetrate through the through holes and then are fixedly connected with the cover plate arranged on the test base, when the cover plate is lifted by the traction force F acting externally, the connecting assemblies move along with the cover plate, and the cover plate is separated from the test base to place or replace the heat pipe to be tested, so that the heat pipe to be tested is placed or replaced simply, and therefore the heat pipe testing device has the advantages of simple structure and convenience in operation. Meanwhile, the connecting assembly comprises a fastener and an elastic piece arranged on the periphery of the fastener, and two ends of the elastic piece are respectively abutted against the bottom end of the second protruding part and the bottom end of the fastener; when the cover plate is applied with traction force F, the fastener moves along with the cover plate and compresses the elastic piece, at the moment, the cover plate is not in contact with the test base, and the heat pipe can be placed on the test base; when the traction force F disappears, the cover plate can slowly approach the test base due to the action of the elastic piece, and the heat pipes with different thicknesses are automatically adapted according to different compression degrees of the elastic piece, so that the test device for the heat pipes has high universality.

Based on the same utility model concept, the utility model also provides a test system, which comprises the test device and the temperature acquisition device for the heat pipe, wherein the temperature acquisition device comprises a temperature acquisition instrument and a temperature sensor, the temperature sensor is arranged on the test base, and the temperature acquisition instrument is respectively connected with the temperature sensor and a temperature measurement piece arranged at the bottom of the cover plate.

By adopting the technical scheme, the testing system and the testing device for the heat pipe have the same advantages compared with the prior art, and are not repeated herein.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a testing apparatus for a heat pipe according to an embodiment of the present invention;

FIG. 2 is a bottom view of a testing device for heat pipes according to an embodiment of the present invention;

FIG. 3 is a longitudinal sectional view of a test apparatus for a heat pipe according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along section A-A of FIG. 3;

FIG. 5 is a schematic diagram of a test system as described in embodiments of the utility model;

FIG. 6 is a schematic diagram of the temperature measurement of the test system in an embodiment of the present invention;

description of reference numerals:

1-a test device for a heat pipe;

11-a base, 12-a test base, 121-a through hole, 1211-a first protrusion, 1212-a second protrusion, 122-a heating assembly, 1221-a thermal pad, 1222-a heat transfer member, 1223-a heat generating member, 13-a cover plate, 131-a connection hole, 14-a connection assembly, 141-a fastener, 1411-a first connection portion, 1412-a second connection portion, 1413-a third connection portion, 142-an elastic member, 15-a temperature measuring member, 151-a flexible backing plate, 152-a thermocouple;

2-a temperature acquisition device, 21-a temperature acquisition instrument and 22-a temperature sensor;

3-heat pipe.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the utility model. In the description of the present invention, it is to be understood that the terms "upper", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein.

The utility model is further described with reference to the following figures and examples.

Referring to fig. 1 to 4, a testing apparatus 1 for a heat pipe according to an embodiment of the present invention is described in detail. The heat pipe of the present invention is a flat heat pipe, and the test performed by the test apparatus 1 for a heat pipe of the present invention is an isothermal test for the flat heat pipe. The testing device 1 comprises a testing base 12 and a cover plate 13 arranged at the upper end of the testing base 12. The heat pipe 3 to be tested is placed between the test base 12 and the cover 13, and the heat pipe 3 is carried by the test base 12.

The test base 12 is provided with a plurality of through holes 121 along the height direction of the test base 12, and the through holes 121 extend along the inner wall of the through holes 121 toward the outer wall direction away from the through holes 121. The testing apparatus 1 for heat pipes further includes connection members 14 provided in one-to-one correspondence with the through holes. Each connecting component 14 passes through the corresponding through hole 121 and then is fastened and connected with the cover plate 13, and the connecting components 14 can move in the through holes 121 of the test base 12 relative to the test base 12 under the driving of the cover plate 13.

The connecting assembly 14 includes a fastening member 141 and an elastic member 142, and the elastic member 142 is disposed on the periphery of the fastening member 141. Both ends of the elastic member 142 abut against the bottom end of the second protrusion 1212 and the bottom end of the fastening member 141, respectively. Further, when the cover 13 is moved away from the test base 12 by the pulling force F shown in fig. 3, the fastening member 141 can move upward following the cover 13 and compress the elastic member 142; when the pulling force F disappears, the cover 13 slowly approaches the test base 12 by the elastic member 142 until the cover 13 is pressed against the test base 12.

In some embodiments of the present invention, as shown in fig. 1 and 3, a base 11 is further provided below the test base 12 of the test apparatus 1 for a heat pipe, and the base 11 and the test base 12 are firmly connected. The base 11 and the test base 12 can be fastened and connected by mechanical connectors such as bolts and rivets.

In some embodiments of the present invention, as shown in fig. 3, the through hole 121 further extends a first protrusion 1211 along an inner wall thereof in a direction away from an outer wall thereof, the first protrusion 1211 is located below the second protrusion 1212 and is connected to the second protrusion 1212, and an extension length of the first protrusion 1211 is smaller than an extension length of the second protrusion 1212. The first projection 1211 is in clearance fit with the elastic member 142. The through hole 121 is clearance-fitted to the third connecting portion 1413.

The cover plate 13 is provided with a plurality of connecting holes 131 corresponding to the through holes 121 one by one, the connecting holes 131 are concentrically arranged with the corresponding through holes 121, and the fastening members 141 are matched with the corresponding connecting holes 131 after penetrating through the through holes 121 so as to be fixedly connected with the cover plate 13. The fastener 141 includes a first connection portion 1411, a second connection portion 1412 and a third connection portion 1413 that are sequentially arranged along a central axis thereof, and the first connection portion 1411, the second connection portion 1412 and the third connection portion 1413 are sequentially arranged from a top end to a bottom end of the fastener 141 and have gradually increasing outer diameters. The first connecting portion 1411 penetrates into the connecting hole 131, the second connecting portion 1412 is disposed in the elastic member 142, and a top end of the third connecting portion 1413 abuts against a bottom end of the elastic member 142. The bottom end of the first protrusion 1211 limits the moving height of the third connecting portion 1413, as shown in fig. 3, the third connecting portion 1413 is movable with respect to the test base 12 by a distance L, and it is understood that the cover 13 is movable with respect to the test base 12 by a distance L.

In some embodiments of the present invention, the elastic member 142 may be a spring composed of a plurality of spirally wound coils, or may be a set of elastic pieces disposed on both sides of the fastening member 141, as long as the elastic member 142 has an elastic deformation amount that satisfies the requirement of the testing device 1 for a heat pipe of the present invention when the heat pipe 3 is movably placed, and no other limitation is imposed thereon.

In some embodiments of the present invention, as shown in fig. 1-3, the fastener 141 may be a half-thread bolt. The first connection portion 1411 is a threaded connection portion of a half-thread bolt, the second connection portion 1412 is a polished rod portion of the half-thread bolt, and the third connection portion 1413 is a bolt countersunk head portion of the half-thread bolt. Accordingly, a screw thread matching with the screw thread of the first connection portion 1411 is provided in the connection hole 131 of the cover plate 13, so that the first connection portion 1411 fastens the fastening member 141 and the cover plate 13 after passing through the connection hole 131.

In some embodiments of the present invention, as shown in fig. 4 and 6, the bottom of the cover plate 13 is provided with a temperature measuring member 15 for measuring the surface temperature of the heat pipe 3, the temperature measuring member 15 includes a flexible backing plate 151, and a thermocouple 152 is disposed in the flexible backing plate 151. The flexible backing plate 151 ensures that the test base 12 and the heat pipe 3 can be in uniform contact. The thermocouple 152 may be a conventional type K thermocouple or a type T thermocouple.

A heating assembly 122 is disposed in the test base 12, and the heating assembly 122 is used for heating the carried heat pipe 3. The heating assembly 122 includes a thermal pad 1221, a heat transfer member 1222, and a heat generating member 1223, which are stacked and connected in sequence. The heat conducting pad 1221 is used for bearing the heat pipe 3 and is abutted with the temperature measuring part 15. The heat transfer member 1222 is preferably a metallic copper block with high thermal conductivity and good temperature uniformity. The heat generating member 1223 may be a power resistor. The heat conducting pad 1221 is bonded to the heat transfer member 1222, and the heat conducting pad 1221 is preferably made of a flexible material such as rubber, so that when the heat pipe 3-fold cover plate 13 placed on the heat conducting pad 1221 is pressed tightly, the heat conducting pad 1221 can be in uniform contact with the heat pipe 3 to uniformly heat the heat pipe 3.

In some embodiments of the present invention, as shown in fig. 1, 3 and 5, an operating portion (not labeled) may be disposed on the cover plate 13, and the operating portion is disposed at both ends of the cover plate 13 to facilitate an external upward traction force F applied to the cover plate 13.

The testing device 1 for the heat pipe in the embodiment of the utility model has the advantages of simple structure and convenience in operation. Meanwhile, the connecting assembly 14 includes a fastening member 141 and an elastic member 142 disposed on the periphery of the fastening member 141, and two ends of the elastic member 142 are respectively abutted against the bottom end of the second protrusion 1212 and the bottom end of the fastening member 141; when the cover plate 13 is applied with the traction force F, the fastening member 141 follows the cover plate 13 to move and compress the elastic member, and the cover plate 13 is not in contact with the test base 12, so that the heat pipe 3 can be placed on the test base 12; when the traction force F disappears, the cover plate 13 approaches the test base 12 slowly due to the elastic member 142, and the heat pipes 3 with different thicknesses are automatically adapted according to the difference of the compression degree of the elastic member 142, so that the testing device 1 for heat pipes of the present invention has high versatility.

According to a second aspect of the present invention, there is provided a test system, as shown in fig. 5 and 6, comprising a test apparatus 1 for a heat pipe and a temperature acquisition apparatus 2 as described above. The temperature acquisition device 2 comprises a temperature acquisition instrument 21 and a temperature sensor 22, the temperature sensor 22 is arranged on the test base 12, and the temperature acquisition instrument 21 is respectively connected with the temperature sensor 22 and a thermocouple 152 of the temperature measurement piece 15 arranged at the bottom of the cover plate 13. The temperature sensor 22 is disposed on the test base 12 near the heat generating member 1223, the temperature sensor 22 is used for measuring the temperature state of the heat generating member 1223 and the heat transfer member 1222, and the thermocouple 152 is used for measuring the surface temperature of the heat pipe 3.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A testing apparatus for a heat pipe, comprising:

the testing base (12), the testing base (12) is used for bearing the heat pipe (3), a plurality of through holes (121) are formed in the testing base (12) along the height direction of the testing base, and second protruding parts (1212) extend out of the through holes (121) along the inner walls of the through holes (121) in the direction far away from the outer walls of the through holes (121);

the cover plate (13), the said cover plate (13) locates on the said test base (12);

the connecting components (14) are arranged in one-to-one correspondence to the through holes (121), and each connecting component (14) is fixedly connected with the cover plate (13) after penetrating through the corresponding through hole (121); the connecting assembly (14) comprises a fastener (141) and an elastic piece (142) arranged on the periphery of the fastener (141), and two ends of the elastic piece (142) are respectively abutted against the bottom end of the second protruding part (1212) and the bottom end of the fastener (141);

when the cover plate (13) moves away from the test base (12) under the action of a traction force F, the fastener (141) can move along with the cover plate (13) and compress the elastic piece (142); when the traction force F disappears, the cover plate (13) slowly approaches the test base (12) under the action of the elastic piece (142) until the cover plate (13) is pressed with the test base (12).

2. A test apparatus for a heat pipe according to claim 1, wherein: the testing device (1) for the heat pipe further comprises a base (11), the base (11) is arranged below the testing base (12), and the base (11) is fixedly connected with the testing base (12).

3. A test apparatus for a heat pipe according to claim 1, wherein: the cover plate (13) is provided with a plurality of connecting holes (131) corresponding to the through holes (121) one by one, the fastening piece (141) comprises a first connecting portion (1411), a second connecting portion (1412) and a third connecting portion (1413) which are arranged from the top end to the bottom end of the fastening piece (141), the outer diameters of the first connecting portion (1411), the second connecting portion (1412) and the third connecting portion (1413) are gradually increased, the first connecting portion (1411) penetrates through the connecting holes (131) to enable the fastening piece (141) to be fixedly connected with the cover plate (13), the second connecting portion (1412) is arranged in the elastic piece (142), and the top end of the third connecting portion (1413) is abutted to the bottom end of the elastic piece (142).

4. A test apparatus for a heat pipe according to claim 3, wherein: the through hole (121) is further provided with a first protruding portion (1211) extending along the inner wall of the through hole (121) in the direction away from the outer wall of the through hole (121), the first protruding portion (1211) is located below the second protruding portion (1212), and the extending length of the first protruding portion (1211) is smaller than that of the second protruding portion (1212).

5. A test apparatus for a heat pipe according to claim 4, wherein: the first protrusion (1211) is in clearance fit with the elastic piece (142); the through hole (121) is in clearance fit with the third connecting portion (1413), and the bottom end of the first protruding portion (1211) limits the height of the third connecting portion (1413).

6. A test apparatus for a heat pipe according to claim 3, wherein: the elastic member (142) is a spring constituted by a plurality of spiral turns spirally wound; the fastener (141) is a half-thread bolt, the first connecting portion (1411) is a threaded connecting portion, the second connecting portion (1412) is a polished rod portion, and the third connecting portion (1413) is a bolt countersunk head portion.

7. A test apparatus for a heat pipe according to claim 1, wherein: the temperature measuring device is characterized in that a temperature measuring part (15) used for measuring the surface temperature of the heat pipe (3) is arranged at the bottom of the cover plate (13), the temperature measuring part (15) comprises a flexible base plate (151), and a thermocouple (152) is arranged in the flexible base plate (151).

8. A test apparatus for a heat pipe according to claim 7, wherein: the testing base (12) is internally provided with a heating assembly (122) for generating heat, the heating assembly (122) comprises a heat conducting pad (1221), a heat transfer piece (1222) and a heating piece (1223) which are sequentially connected in an overlapping mode, and the heat conducting pad (1221) is used for bearing the heat pipe (3) and is abutted to the temperature measuring piece (15).

9. A test apparatus for a heat pipe according to claim 8, wherein: the heating element (1223) is a power resistor.

10. A test system, characterized by: the heat pipe testing device and the temperature collecting device (2) as claimed in any one of claims 1 to 9, wherein the temperature collecting device (2) comprises a temperature collecting instrument (21) and a temperature sensor (22), the temperature sensor (22) is arranged on the testing base (12), and the temperature collecting instrument (21) is respectively connected with the temperature sensor (22) and a temperature measuring part (15) arranged at the bottom of the cover plate (13).