Cavity insulation structure and test device

Abstract

The utility model relates to a cavity insulation structure and a test device, the cavity insulation structure comprises a first partition, a second partition and an elastic insulation layer. The equipment cavity and the test cavity are separated by the cavity insulation structure, and a transfer plate passes through the cavity insulation structure and extends its two ends into the equipment cavity and the test cavity respectively, so as to facilitate the connection between the resource board of the equipment cavity and the device to be tested in the test cavity. The transfer plate that passes through the cavity insulation structure is squeezed through the sealing channel between the first through groove and the second through groove, and is adhered to the first sealing gasket and the elastic insulation layer by the extrusion action to form a seal. It can be seen that the transfer plate will not destroy the sealing between the equipment cavity and the test cavity, so under the action of the cavity insulation structure, the heat exchange between the equipment cavity and the test cavity can be extremely small, and the temperature in the test cavity can be maintained for a long time. Therefore, the above-mentioned cavity insulation structure and the test device have good insulation performance.

Description

Technical Field

[0001] The utility model relates to the technical field of chip testing, in particular to a cavity heat preservation structure and a testing device. Background Art

[0002] The test device is generally equipped with an equipment cavity and a test cavity. The equipment cavity is equipped with components such as resource boards that can realize the corresponding functions, and the test cavity is used to place the device to be tested. In order to simulate the corresponding working conditions, the test cavity needs to maintain a specific temperature during the actual test process, resulting in a large temperature difference between it and the equipment cavity. In order to keep warm, it is necessary to set up an insulation structure between the test cavity and the equipment cavity.

[0003] When performing the test process, the resource board needs to be connected to the device under test through the transfer board, so that the power supply and control signals are transmitted to the device under test through the transfer board. The transfer board needs to pass through the insulation structure between the equipment cavity and the test cavity and extend from the equipment cavity into the test cavity to connect with the resource board and the device under test. However, when the transfer board passes through the insulation structure, the integrity of the insulation structure will be destroyed, resulting in a decrease in its insulation performance. Utility Model Content

[0004] Based on this, it is necessary to provide a cavity insulation structure and a testing device with better thermal insulation performance to address the above problems.

[0005] A cavity insulation structure comprises a first baffle, a second baffle and an elastic heat insulation layer, wherein the elastic heat insulation layer is filled between the first baffle and the second baffle, a first through groove and a second through groove are respectively opened at corresponding positions of the first baffle and the second baffle, and a first sealing gasket covering the first through groove is installed on the first baffle;

[0006] A sealing channel is formed between the first through groove and the corresponding second through groove, which passes through the first sealing gasket and the elastic heat insulation layer in sequence and is used for the element to pass through. The side surface of the element is in contact with the first sealing gasket and the elastic heat insulation layer.

[0007] In one of the embodiments, a second sealing gasket covering the second through groove is installed on the second partition plate, and the sealing channel runs through the second sealing gasket.

[0008] In one of the embodiments, a heating gasket is installed on the second partition plate, and the sealing channel runs through the heating gasket.

[0009] In one of the embodiments, the elastic thermal insulation layer includes a plurality of thermal insulation blocks stacked in sequence, a closed seam is formed between two adjacent thermal insulation blocks, the closed seam is located on the sealing channel, and the element can open the closed seam when passing through the sealing channel.

[0010] In one of the embodiments, outward-expanding guide openings are formed at both ends of the closed seam of the elastic heat-insulating layer.

[0011] In one of the embodiments, a first sinking platform extending along the circumference of the first through groove is formed on one side edge of the first through groove, and the first sealing gasket is carried on the first sinking platform and pressed on the first sinking platform by a first pressing plate.

[0012] In one of the embodiments, it also includes a base fixed to the side of the first partition facing away from the elastic insulation layer, the base is formed with an installation groove with openings at both ends and connected to the first through groove, and the element passing through the sealing channel can be inserted into the installation groove and seal with the inner wall of the installation groove.

[0013] In one embodiment, the base is detachably mounted on the first partition, and a sealing ring is clamped between the base and the first partition.

[0014] In one of the embodiments, the base is provided with a detachable cover plate, and the cover plate covers the opening of the installation groove on the side facing away from the first partition plate.

[0015] In one embodiment, a plurality of the first through grooves and a plurality of the second through grooves are respectively formed on the first partition plate and the second partition plate, and a plurality of the sealing channels are formed between the plurality of the first through grooves and the plurality of the second through grooves.

[0016] A testing device, comprising:

[0017] The box body is formed with an equipment cavity and a test cavity;

[0018] The cavity insulation structure as described in any one of the above preferred embodiments, wherein the cavity insulation structure is arranged between the equipment cavity and the test cavity; and

[0019] The transfer plate is arranged in the sealing channel, and two ends of the transfer plate extend to the equipment cavity and the test cavity respectively.

[0020] In the above-mentioned cavity insulation structure and test device, the equipment cavity and the test cavity are separated by the cavity insulation structure, and the transfer plate passes through the cavity insulation structure and has its two ends extend into the equipment cavity and the test cavity respectively, so as to facilitate the connection between the resource board in the equipment cavity and the device to be tested in the test cavity. The transfer plate that passes through the cavity insulation structure squeezes through the sealing channel between the first through groove and the second through groove, and adheres to the first sealing gasket and the elastic insulation layer through the extrusion action to form a seal. It can be seen that the transfer plate will not destroy the sealing between the equipment cavity and the test cavity, so under the action of the cavity insulation structure, the heat exchange between the equipment cavity and the test cavity can be extremely small, and the temperature in the test cavity can be maintained for a long time. Therefore, the above-mentioned cavity insulation structure and test device have good insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of a module of a testing device in one embodiment of the utility model;

[0023] Figure 2 This is a schematic structural diagram of the cavity insulation structure in a preferred embodiment of the utility model;

[0024] Figure 3 for Figure 2 A side view of the cavity insulation structure shown;

[0025] Figure 4 for Figure 3 The shown cavity insulation structure is a cross-sectional view along AA;

[0026] Figure 5 for Figure 4 An enlarged schematic diagram of a part B in the cross-sectional view of the cavity insulation structure shown;

[0027] Figure 6 for Figure 4 An enlarged schematic diagram of part C in the cross-sectional view of the cavity insulation structure shown. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0034] See also Figure 1 and Figure 2 The utility model provides a cavity insulation structure 100 and a testing device. The testing device comprises a cavity insulation structure 100, a box 200 and a transfer plate 300.

[0035] The box 200 is formed with a device cavity 201 and a test cavity 202. The device cavity 201 is used to accommodate the device for testing such as the resource board 210, and the test cavity 202 can maintain the required temperature for accommodating the device to be tested. For the aging test, the device to be tested is a BIB unit board 220 equipped with a number of chips. The cavity insulation structure 100 is arranged between the device cavity 201 and the test cavity 202, and is used to isolate the device cavity 201 from the test cavity 202 to reduce the efficiency of heat exchange between the device cavity 201 and the test cavity 202. The transfer plate 300 passes through the cavity insulation structure 100, and the two ends extend to the device cavity 201 and the test cavity 202 respectively, so as to facilitate the connection between the resource board 210 in the device cavity 201 and the device to be tested in the test cavity 202. The power supply and control signal provided by the resource board 210 can be transmitted to the BIB unit board 220 through the transfer board 300 to complete the aging test procedure.

[0036] Please also read Figure 3 and Figure 4 The cavity insulation structure 100 in the preferred embodiment of the present invention includes a first partition plate 110 , a second partition plate 120 and an elastic insulation layer 130 .

[0037] The first partition 110 and the second partition 120 can both be made of metal plates or plastic plates, and the structures of the two can be the same. Specifically, the first partition 110 can be located on the side of the cavity insulation structure 100 facing the equipment cavity 201, and the second partition 120 can be located on the side of the cavity insulation structure 100 facing the test cavity 202; the first partition 110 can also be located on the side of the cavity insulation structure 100 facing the test cavity 202, and the second partition 120 can be located on the side of the cavity insulation structure 100 facing the equipment cavity 201. The first partition 110 and the second partition 120 are arranged opposite to each other to form a containing space between the two, and the edges of the first partition 110 and the second partition 120 can be fixed by a connecting block (not shown) to close the containing space.

[0038] The elastic heat-insulating layer 130 is filled between the first partition 110 and the second partition 120. The elastic heat-insulating layer 130 has good heat-insulating performance and can be elastically deformed. Specifically, the elastic heat-insulating layer 130 can be a heat-insulating foam layer, an aerogel felt layer, or a glass fiber layer. Since the elastic heat-insulating layer 130 can effectively prevent heat from passing through, it can reduce the efficiency of heat exchange between the first partition 110 and the second partition 120, thereby achieving heat preservation for the test cavity 202.

[0039] Please also read Figure 5 , the first partition plate 110 is provided with a first through groove 101, and a first sealing gasket 111 covering the first through groove 101 is installed on the first partition plate 110. The first sealing gasket 111 can be formed of elastic materials such as rubber and silicone, and can be elastically deformed under the action of external force. Specifically in this embodiment, a first sinking platform (not marked in the figure) extending along the circumference of the first through groove 101 is formed on one side edge of the first through groove 101, and the first sealing gasket 111 is carried on the first sinking platform and pressed on the first sinking platform by the first pressing plate 112.

[0040] The first pressing plate 112 can be fastened to the first partition plate 110 by bolts, thereby pressing the first gasket 111. In this way, the first gasket 111 can be more firmly installed on the first partition plate 110. Obviously, in other embodiments, the first gasket 111 can also be installed on the first partition plate 110 by bonding or other methods.

[0041] A second through slot 102 is provided at a position corresponding to the second partition plate 120 and the first through slot 102. Furthermore, a sealing channel (not shown) is formed between the first through slot 101 and the corresponding second through slot 102, which passes through the first sealing gasket 111 and the elastic heat insulation layer 130 in sequence. Moreover, an element can be inserted into the sealing channel, and the element abuts against the first sealing gasket 111 and the elastic heat insulation layer 130. Specifically, the element in this embodiment is a transfer plate 300, which can pass through the cavity insulation structure 100 through the sealing channel, so that its two ends extend to the equipment cavity 201 and the test cavity 202 respectively.

[0042] When the transfer plate 300 passes through the sealing channel, it can be inserted through the first through slot 102 first, then pass through the first sealing pad 111 and the elastic insulation layer 130 in sequence, and finally extend out of the second through slot 102; it can also be inserted through the second through slot 102 first, then pass through the elastic insulation layer 130 and the first sealing pad 111 in sequence, and finally extend out of the first through slot 102. When passing through the sealing channel, the transfer plate 300 can squeeze the first sealing pad 111 and the elastic insulation layer 130 and cause them to undergo elastic deformation, so a seal can be formed between the transfer plate 300 and the first sealing pad 111 and the elastic insulation layer 130. It can be seen that since multiple sealing structures are formed between the transfer plate 300 and the cavity insulation structure 100, the transfer plate 300 will not destroy the sealing between the equipment cavity 201 and the test cavity 202 when passing through the cavity insulation structure 100, and the cavity insulation structure 100 and the test device have good insulation performance.

[0043] Specifically, in this embodiment, a second sealing gasket 121 covering the second through groove 102 is installed on the second partition plate 120. The material and structure of the second sealing gasket 121 can be the same as those of the first sealing gasket 111. Similarly, the transfer plate 300 can squeeze the second sealing gasket 121 when passing through the sealing channel, so a seal can be formed between the transfer plate 300 and the second sealing gasket 121, thereby adding a sealing structure between the transfer plate 300 and the cavity insulation structure 100, further improving the sealing between the equipment cavity 201 and the test cavity 202.

[0044] In order to adapt to a lower low temperature test environment (below -10°C). Specifically in this embodiment, a heating gasket (not shown) is installed on the second partition 120, and a sealing channel passes through the heating gasket. The transfer plate 300 passing through the sealing channel passes through the heating gasket and can be heated by the heating gasket, so that the temperature of the transfer plate 300 can be maintained to avoid frost and fogging on the surface of the transfer plate 300. Preferably, the heating gasket is a silicone heating plate.

[0045] More specifically, in this embodiment, a second sinking platform (not shown) extending along the circumference of the second through groove 102 is formed on one side edge of the second through groove 102, and the second sealing gasket 121 is carried on the second sinking platform and pressed on the second sinking platform by the second pressing plate 122. The function and installation method of the second pressing plate 122 are the same as those of the first pressing plate 112, so they will not be described here.

[0046] For easy installation, the heating pad can also be held on the second sink by the second pressing plate 122. Moreover, the heating pad can be arranged on the side of the second sealing pad 121 facing the second pressing plate 122, or on the side of the second sealing pad 121 facing away from the second pressing plate 122.

[0047] In addition, in this embodiment, a plurality of first through grooves 101 and a plurality of second through grooves 102 are respectively formed on the first partition plate 110 and the second partition plate 120 , and a plurality of sealing channels are formed between the plurality of first through grooves 101 and the plurality of second through grooves 102 .

[0048] Each first through slot 101 is covered by a first sealing gasket 111, and each second through slot 102 is also covered by a second sealing gasket 121. The elastic heat insulating layer 130 extends to face the plurality of first through slots 101 and the plurality of second through slots 102. Therefore, a sealed channel can be formed between each first through slot 101 and the corresponding second through slot 102. The plurality of sealed channels can allow a plurality of transfer plates 300 to simultaneously pass through the cavity insulation structure 100 and extend into the test cavity 202, thereby allowing the above-mentioned test device to test a plurality of devices under test at the same time.

[0049] The shapes of the first through groove 101 and the second through groove 102 can be determined according to the shape of the element passing through the sealing channel, that is, the shape of the transfer plate 300. For example, it can be in the shape of a long strip. The cross-sectional shape of the sealing channel can also be determined according to the shape of the transfer plate 300. Specifically, a sealing channel can be formed by opening a slot structure of a desired shape at positions corresponding to the first sealing pad 111, the elastic insulation layer 130 and the second sealing pad 121. The inner diameter of the slot structure should be smaller than the outer diameter of the transfer plate 300, so that the transfer plate 300 can squeeze the first sealing pad 111, the elastic insulation layer 130 and the second sealing pad 121 in the process of passing through the sealing channel.

[0050] Specifically, in this embodiment, closed seams (not shown) are formed at corresponding positions of the first sealing gasket 111, the elastic insulation layer 130 and the second sealing gasket 121, respectively. The closed seams are located on the sealing channel, and the transfer plate 300 can open the closed seams when passing through the sealing channel.

[0051] A closed seam refers to a gap that is in a closed state in a natural state, and a closed seam can be formed on the first sealing pad 111, the elastic insulation layer 130, and the second sealing pad 121 by cutting. A closed seam in a natural state can close the sealing channel, and the sealing channel can only be opened by stretching the closed seam under the action of an external force. In the process of the transfer plate 300 passing through the cavity insulation structure 100 and extending into the test cavity 202, the transfer plate 300 can sequentially stretch the closed seams on the first sealing pad 111, the elastic insulation layer 130, and the second sealing pad 121, and the closed seams have a tendency to reset after being stretched, so that a more reliable seal can be formed between the transfer plate 300 and the first sealing pad 111, the elastic insulation layer 130, and the second sealing pad 121, respectively.

[0052] When replacing the transfer plate 300, the transfer plate 300 needs to be pulled out from the cavity insulation structure 100. During the process of pulling out the transfer plate 300, the closing seams on the second sealing pad 121, the elastic insulation layer 130 and the first sealing pad 111 will automatically close in sequence after losing support. In this way, it is possible to avoid damaging the sealing of the cavity insulation structure 100 during the process of pulling out the transfer plate 300, so that a relatively reliable seal can always be maintained between the test cavity 202 and the equipment cavity 201.

[0053] Furthermore, in the present embodiment, the elastic heat-insulating layer 130 includes a plurality of insulation blocks 131 stacked in sequence, and a closed seam is formed between two adjacent insulation blocks 131. The two adjacent insulation blocks 131 fit together but do not adhere to each other under the action of gravity, so the transfer plate 300 can smoothly pass between the two insulation blocks 131. The material and structure of the plurality of insulation blocks 131 can be the same. After the plurality of insulation blocks 131 are stacked in sequence in the accommodation space between the first partition 110 and the second partition 120, a closed seam can be naturally formed in the elastic heat-insulating layer 130 without additional operation, which is conducive to reducing the difficulty of processing.

[0054] By controlling the height of the heat insulating block 131 , the closed seam in the elastic heat insulating layer 130 can be located on the sealed channel. Specifically, the height of each heat insulating block 131 is the same as the center distance of two adjacent first through grooves 101 .

[0055] It should be pointed out that in other embodiments, the elastic heat-insulating layer 130 may also be formed as a whole, and closed seams may be formed at corresponding positions by cutting.

[0056] In this embodiment, outwardly expanded guide openings 103 are formed at both ends of the closed seam of the elastic heat insulating layer 130. Specifically, the guide openings 103 can be formed by chamfering the edges of the heat insulating block 131. Since the guide openings 103 are funnel-shaped, they can guide the transfer plate 300, so that the transfer plate 300 can smoothly enter the closed seam of the elastic heat insulating layer 130 and pass through the area of ​​the elastic heat insulating layer 130.

[0057] Please refer again Figure 4 Also see Figure 6 In this embodiment, the cavity insulation structure 100 also includes a base 140 fixed to the side of the first partition 110 facing away from the elastic insulation layer 130. The base 140 is formed with an installation groove (not marked in the figure) with openings at both ends and connected to the first through groove 101. The transfer plate 300 through the sealing channel can be passed through the installation groove and sealed with the inner wall of the installation groove.

[0058] By sealing the installation groove with the transfer plate 300, a sealing structure can be added between the transfer plate 300 and the cavity insulation structure 100, so that the sealing and insulation performance of the cavity insulation structure 100 can be further improved. Specifically, a sealant 210 is provided at one end of the transfer plate 300 accommodated in the installation groove. When the transfer plate 300 is inserted into the installation groove, the inner wall of the installation groove can squeeze the sealant 210, thereby achieving a sealing match with the transfer plate 300.

[0059] It should be noted that in other embodiments, an annular sealing rubber ring may also be provided along the inner wall of the installation groove, and when the transfer plate 300 is inserted into the installation groove, the sealing rubber ring on the inner wall of the installation groove may be squeezed to achieve sealing cooperation between the transfer plate 300 and the installation groove.

[0060] Furthermore, in this embodiment, the base 140 is detachably mounted on the first partition 110, and a sealing ring 150 is sandwiched between the base 140 and the first partition 110. Separate molding of the base 140 and the first partition 110 is conducive to reducing the difficulty of processing, and the sealing ring 150 can seal between the base 140 and the first partition 110, thereby avoiding a reduction in the sealing performance of the cavity insulation structure 100.

[0061] Specifically, the base 140 may be connected to the first partition plate 110 via a threaded fastener. Obviously, in other embodiments, the base 140 may also be integrally formed with the first partition plate 110, thereby omitting the sealing ring 150.

[0062] In addition, in this embodiment, the base 140 is provided with a detachable cover plate 141, and the cover plate 141 covers the opening of the installation slot on the side facing away from the first partition plate 110. When installing the transfer plate 300, the cover plate 141 can be removed first to open the opening of the installation slot, and then the cover plate 141 can be installed after the transfer plate 300 passes through the installation slot and extends into the test cavity 202. In this way, the cover plate 141 can limit the transfer plate 300 to prevent the transfer plate 300 from retreating, thereby ensuring that the transfer plate 300 can maintain a stable position during the test process.

[0063] In the above-mentioned cavity insulation structure 100 and test device, the equipment cavity 201 and the test cavity 202 are separated by the cavity insulation structure, and the transfer plate 300 passes through the cavity insulation structure 100 and extends its two ends into the equipment cavity 201 and the test cavity 202 respectively, so as to facilitate the connection between the resource board 210 in the equipment cavity 201 and the device under test in the test cavity 202. The transfer plate 300 that passes through the cavity insulation structure 100 squeezes through the sealing channel between the first through groove 101 and the second through groove 102, and adheres to the first sealing gasket 111 and the elastic insulation layer 130 through the squeezing action to form a seal. It can be seen that the transfer plate 300 will not destroy the sealing between the equipment cavity 201 and the test cavity 202, so under the action of the cavity insulation structure 100, the heat exchange between the equipment cavity 201 and the test cavity 202 can be very small, and the temperature in the test cavity 202 can be maintained for a long time. Therefore, the above-mentioned cavity insulation structure 100 and the test device have good insulation performance.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A cavity insulation structure, characterized in that: It comprises a first partition, a second partition and an elastic heat-insulating layer, wherein the elastic heat-insulating layer is filled between the first partition and the second partition, a first through groove and a second through groove are respectively opened at corresponding positions of the first partition and the second partition, and a first sealing gasket covering the first through groove is installed on the first partition; A sealing channel is formed between the first through groove and the corresponding second through groove, which passes through the first sealing gasket and the elastic heat insulation layer in sequence and is used for the element to pass through. The side surface of the element is in contact with the first sealing gasket and the elastic heat insulation layer.

2. The cavity insulation structure according to claim 1, characterized in that: A second sealing gasket covering the second through groove is installed on the second partition plate, and the sealing channel passes through the second sealing gasket.

3. The cavity insulation structure according to claim 1, characterized in that: A heating gasket is installed on the second partition plate, and the sealing channel runs through the heating gasket.

4. The cavity insulation structure according to claim 1, characterized in that: The elastic heat-insulating layer comprises a plurality of heat-insulating blocks stacked in sequence, a closed seam is formed between two adjacent heat-insulating blocks, the closed seam is located on the sealing channel, and the element can open the closed seam when passing through the sealing channel.

5. The cavity insulation structure according to claim 4, characterized in that: Outwardly expanding guide openings are formed at both ends of the closed seam of the elastic heat-insulating layer.

6. The cavity insulation structure according to claim 1, characterized in that: A first sinking platform extending along the circumference of the first through groove is formed on one side edge of the first through groove, and the first sealing gasket is carried on the first sinking platform and pressed on the first sinking platform by a first pressing plate.

7. The cavity insulation structure according to claim 1, characterized in that: It also includes a base fixed to the side of the first partition facing away from the elastic insulation layer, the base is formed with an installation groove with two ends opened and connected to the first through groove, and the element passing through the sealing channel can be inserted into the installation groove and seal with the inner wall of the installation groove.

8. The cavity insulation structure according to claim 7, characterized in that: The base is detachably mounted on the first partition, and a sealing ring is clamped between the base and the first partition.

9. The cavity insulation structure according to claim 7, characterized in that: The base is provided with a detachable cover plate, and the cover plate covers the opening of the installation groove on the side facing away from the first partition plate.

10. The cavity insulation structure according to any one of claims 1 to 9, characterized in that: A plurality of the first through grooves and a plurality of the second through grooves are respectively formed on the first partition plate and the second partition plate, and a plurality of the sealing channels are formed between the plurality of the first through grooves and the plurality of the second through grooves.

11. A testing device, characterized in that: include: The box body is formed with an equipment cavity and a test cavity; The cavity insulation structure as described in any one of claims 1 to 10 above, wherein the cavity insulation structure is arranged between the equipment cavity and the test cavity; and The transfer plate is arranged in the sealing channel, and two ends of the transfer plate extend to the equipment cavity and the test cavity respectively.

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