Cold and hot box comprehensive test platform

Abstract

The utility model provides a cold and hot box comprehensive test platform which comprises an electric control cabinet, a computer control system, a cold box and a hot box and further comprises a test piece fixing device, the test piece fixing device comprises an outer frame and a test piece clamping device, the outer frame is arranged between the cold box and the hot box and detachably connected with the cold box and the hot box, and the test piece clamping device is arranged on the outer frame. The test piece clamping device is fixedly mounted on the inner wall of the outer frame; compared with the prior art, the test piece fixing device can be quickly combined with a cold box and a hot box of a test platform, meanwhile, the test piece clamping device in the test piece fixing device can quickly fix an experimental test piece, so that the working hours for mounting the test piece are saved, the workload of experimenters is reduced, the test efficiency is improved, and meanwhile, the test efficiency is improved. According to the utility model, test pieces with larger sizes, such as heat preservation cotton quilts and the like, can be more conveniently fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of cold and hot box test platforms, in particular to a cold and hot box comprehensive test platform for measuring the heat transfer coefficient of a greenhouse insulation quilt. Background Art

[0002] Greenhouse insulation blankets are primarily used to insulate the interior of greenhouses and are commonly found in solar greenhouses. The thermal insulation of greenhouse insulation blankets directly impacts greenhouse crop yields. A lower heat transfer coefficient indicates better insulation performance. Better thermal insulation can prevent crop yield reductions due to temperature drops, thereby increasing production and revenue. Therefore, measuring the heat transfer coefficient of greenhouse insulation blankets is particularly important for agricultural vegetable greenhouses.

[0003] At present, the determination of the heat transfer coefficient of greenhouse insulation blankets is usually completed by a hot and cold box test platform. When the existing hot and cold box test platform is used to measure the heat transfer coefficient of the insulation blanket, the installation of the insulation blanket specimen is cumbersome and time-consuming, and it is difficult for a single tester to complete the installation independently; secondly, the existing hot and cold box test platform can only install smaller-sized specimens and is not suitable for testing large-sized insulation blankets.

[0004] Based on the above factors, it is necessary to propose a comprehensive hot and cold box testing platform suitable for measuring the heat transfer coefficient of thermal insulation quilts. Summary of the Invention

[0005] In view of the deficiencies of the existing technology, the utility model provides a cold and hot box comprehensive test platform to solve the problems of inconvenient test piece installation on the existing cold and hot box test platform and inability to install large-sized test pieces.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A cold and hot box comprehensive testing platform includes an electric control cabinet, a computer control system, a cold box and a hot box, and also includes a specimen fixing device. The specimen fixing device includes an outer frame and a specimen clamping device. The outer frame is arranged between the cold box and the hot box and is detachably connected to the cold box and the hot box. The specimen clamping device is fixedly installed on the inner wall of the outer frame.

[0008] Preferably, the specimen clamping device includes a specimen fixing frame, a specimen pressing device and a specimen limiting frame, the specimen fixing frame and the specimen limiting frame are fixedly installed on the inner wall of the outer frame, and the specimen pressing device is arranged on the four sides of the specimen fixing frame and is fixedly connected to the inner wall of the outer frame and the limiting frame.

[0009] Preferably, the test piece pressing device comprises a guide pressing plate assembly and a clamp assembly; the guide pressing plate assembly comprises a guide pressing plate support, a guide shaft, a linear bearing and a pressing plate, the guide pressing plate support is fixedly connected with the inner wall of the outer frame and the test piece limiting frame through screws, the linear bearing is installed on the guide pressing plate support through screws, the guide shaft is in sliding connection with the linear bearing, and the pressing plate is fixedly connected with the guide shaft; the clamp assembly comprises a handle, a clamping screw rod, a clamp body support and a pressing head, the clamp body support is fixedly connected with the inner wall of the outer frame and the test piece limiting frame through screws, the clamping screw rod is in threaded connection with the clamp body support, the pressing head is in rotary connection with one end of the clamping screw rod close to the fixed frame and can push the pressing plate to move towards the fixed frame, and the handle is connected with the other end of the clamping screw rod.

[0010] Preferably, one end of the clamping screw rod connected with the handle is provided with a through hole, the handle is inserted into the through hole and is in clearance fit with the through hole, and handle heads preventing the handle from falling off are installed at both ends of the handle.

[0011] Preferably, the pressing plate is provided with a plug cap at both ends.

[0012] Preferably, a hanging nail is installed on the upper portion of the fixed frame.

[0013] Preferably, the outer frame comprises a base, a side frame, a top frame and a quick horizontal type clamp, the base, the side frame and the top frame are spliced through the quick horizontal type clamp, and the side frame is connected with the cold box and the hot box through quick buckling.

[0014] Preferably, a movable caster wheel is installed at the lower portion of the base.

[0015] Preferably, the guide pressing plate supports and the clamp body supports are alternately arranged along the test piece limiting frame.

[0016] Preferably, the materials of the cold box, the hot box and the outer frame are polyurethane plates.

[0017] Beneficial effects:

[0018] 1. The test piece fixing device can be quickly combined with the cold box and the hot box of the test platform, meanwhile, the test piece clamping device in the test piece fixing device can quickly fix the experimental test piece, thereby saving the working hours of installing the test piece, reducing the workload of the experimental personnel and improving the test efficiency.

[0019] 2. The size of the outer frame of the test piece fixing device can be the same as that of the cold box or the hot box, so that a test piece with a larger size, such as thermal insulation cotton, can be fixed. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a whole schematic view of the test platform of the utility model;

[0021] Figure 2 is the test piece fixing device schematic view of the utility model;

[0022] Figure 3 is the test piece pressing device schematic view of the utility model;

[0023] Figure 4 is the guide pressing plate part installation schematic view of the utility model;

[0024] Figure 5 is the clamp part installation schematic view of the utility model.

[0025] 1. Electric control cabinet, 2. Computer control system, 3. Cold box, 4. Test piece fixing device, 5. Hot box, 6. Base, 7. Mobile caster, 8. Side frame, 9. Quick horizontal type clamp, 10. Top frame, 11. Test piece fixing frame, 12. Test piece pressing device, 13. Test piece limiting frame, 14. Hanging nail, 15. Cotton quilt test piece, 16. Guide pressing plate part installation, 17. Clamp part installation, 18. Cover, 19. Guide shaft, 20. Guide pressing plate support, 21. Linear bearing, 22. Pressing plate, 23. Handle, 24. Handle head, 25. Clamping screw rod, 26. Clamp support, 27. Pressing head. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the skilled person in the field to which the present application belongs. In this document, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. The terms "connected", "connected", and the like should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium. The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0028] As shown in Figure 1 , the present application provides a cold and hot box comprehensive test platform, which is composed of an electric control cabinet 1, a computer control system 2, a cold box 3, a test piece fixing device 4, and a hot box 5. The test piece fixing device 4 is installed between the cold box 3 and the hot box 5, and the cold box, the hot box and the test piece fixing outer frame are all made of polyurethane board, which has good heat preservation;

[0029] As shown in Figure 2 , the test piece fixing device 4 includes an outer frame and a test piece clamping device, the outer frame is arranged between the cold box 3 and the hot box 5, and is detachably connected with the cold box 3 and the hot box 5 through quick buckling, and the test piece clamping device is fixedly installed on the inner wall of the outer frame;

[0030] Further, as shown in Figure 2 , Figure 3 , the test piece clamping device includes a test piece fixing frame 11, a test piece pressing device 12 and a test piece limiting frame 13, the test piece pressing device 12 is arranged at the four edges of the test piece fixing frame 11, the test piece fixing frame 11 is installed on the inner side of the outer frame through screws, the test piece limiting frame 13 is connected with the guide pressing plate support 20 and the clamping body support 26 through screws, the guide pressing plate support 20 and the clamping body support 26 are alternately arranged along the test piece limiting frame 13, and are installed on the inner side of the outer frame after being connected, and the upper part of the fixing frame 11 is also provided with a hanging nail 14, the hanging nail 14 is installed on the threaded hole on the upper side of the test piece fixing frame 11, and the cotton test piece is hung on the hanging nail 14 when the cotton test piece is installed, so as to facilitate pressing.

[0031] Further, as shown in Figure 3 , Figure 4As shown, the guide pressure plate part 16 includes a guide shaft 19, a guide pressure plate support 20, a linear bearing 21 and a pressure plate 22, the guide pressure plate part 16 is installed on the test piece limiting frame 13 through the guide pressure plate support 20, the guide pressure plate support 20 is provided with the plug cover 18 on both sides of the pressure plate 22, the guide shaft 19 is connected with the pressure plate 22 through a screw, the linear bearing 21 is installed on the guide pressure plate support 20 through a screw, the other end of the guide pressure plate support 20 is installed on the inner wall of the outer frame through a screw, and the pressure plate 22 can slide on the linear bearing 21 through the guide shaft 19. Figure 3 、 Figure 5 As shown, the clamp part 17 includes a handle 23, a handle head 24, a clamping lead screw 25, a clamp support 26 and a pressure head 27, the handle 23 is inserted through the end hole of the clamping lead screw 25, the handle head 24 is installed on the handle 23 to prevent the handle 23 from falling off when rotating, the clamping lead screw 25 is screwed into the threaded hole of the clamp support 26, and the pressure head 27 is connected with the clamping lead screw 25, so that the cotton quilt test piece 15 is pressed tightly by rotating the clamping lead screw 25 through the handle 23 to drive the pressure head 27 to press against the pressure plate 22, and the pressing devices of the four edges are operated in the same way to achieve the purpose of quickly clamping the test piece.

[0032] Further, as shown in Figure 1 、 Figure 2 The outer frame includes an outer frame base 6, a movable caster 7, a side frame 8, a quick horizontal clamp 9, a top frame 10, the movable caster 7 is installed on the bottom of the outer frame base 6 through a screw, the main body of the quick horizontal clamp 9 is installed on the outer frame base 6 and the side frame 8 through a screw, and the hook is installed on the side frame 8 and the top frame 10 through a screw, so that the outer frame function can be quickly spliced and installed.

[0033] The working process of the utility model is as follows:

[0034] The cotton quilt test piece is hung on the hanging nail 14, the cotton quilt test piece is pressed tightly by rotating the clamping lead screw 25 through the handle 23 to drive the pressure head 27 to press against the pressure plate 22, the test piece fixing device is arranged between the cold tank 3 and the hot tank 5, and the test piece fixing device is connected with each other through the quick buckle, the temperature of the cold tank 3 and the hot tank 5 is controlled by operating the computer control system 2, the test process is automatically controlled, the test is automatically stopped after a certain time, and the heat transfer coefficient of the tested cotton quilt test piece can be observed by checking the historical record after the test is completed, so that the heat transfer coefficient of the thermal insulation cotton quilt is measured.

[0035] Although the preferred embodiments of the utility model have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0036] Obviously, various modifications and variations of the present application embodiment can be made by those skilled in the art without departing from the spirit and scope of the present application embodiment. Thus, if these modifications and variations of the present application embodiment fall within the scope of the present application claims and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A cold and hot box comprehensive test platform, comprising an electric control cabinet (1), a computer control system (2), a cold box (3) and a hot box (5), characterized in that: The test piece fixing device (4) comprises an outer frame and a test piece clamping device, the outer frame is arranged between the cold box (3) and the hot box (5) and detachably connected with the cold box (3) and the hot box (5), and the test piece clamping device is fixedly installed on the inner wall of the outer frame.

2. The cold-heat box comprehensive test platform according to claim 1, characterized in that, The test piece clamping device comprises a test piece fixing frame (11), a test piece pressing device (12) and a test piece limiting frame (13), the test piece fixing frame (11) and the test piece limiting frame (13) are fixedly installed on the inner wall of the outer frame, and the test piece pressing device (12) is arranged on the four sides of the test piece fixing frame (11) and fixedly connected with the inner wall of the outer frame and the test piece limiting frame (13).

3. The cold-heat box comprehensive test platform according to claim 2, characterized in that, The test piece pressing device (12) comprises a guide pressing plate part (16) and a clamp part (17). The guide pressing plate part (16) comprises a guide pressing plate support (20), a guide shaft (19), a linear bearing (21) and a pressing plate (22), the guide pressing plate support (20) is fixedly connected with the inner wall of the outer frame and the test piece limiting frame (13) through screws, the linear bearing (21) is installed on the guide pressing plate support (20) through screws, the guide shaft (19) is slidably connected with the linear bearing (21), and the pressing plate (22) is fixedly connected with the guide shaft (19). The clamp part (17) comprises a handle (23), a clamping lead screw (25), a clamp support (26) and a pressing head (27), the clamp support (26) is fixedly connected with the inner wall of the outer frame and the test piece limiting frame (13) through screws, the clamping lead screw (25) is threadedly connected with the clamp support (26), the pressing head (27) is rotatably connected with one end of the clamping lead screw (25) close to the test piece fixing frame (11) and can push the pressing plate to move towards the test piece fixing frame (11), and the handle (23) is connected with the other end of the clamping lead screw (25).

4. The cold-heat box comprehensive test platform according to claim 3, characterized in that, One end of the clamping lead screw (25) connected with the handle (23) is provided with a through hole, the handle (23) is inserted into the through hole and gap-fitted with the through hole, and handle heads (24) are installed at both ends of the handle (23) to prevent the handle (23) from falling off.

5. The cold-heat box comprehensive test platform according to claim 3, characterized in that, Both ends of the pressing plate (22) are provided with plugs (18).

6. The combined cold and hot box test platform according to any one of claims 2-5, characterized in that, The test piece fixing frame (11) is provided with a hanging nail (14) on the upper portion.

7. The combined cold and hot box test platform of any one of claims 1-5, wherein, The outer frame comprises a base (6), a side frame (8), a top frame (10) and a quick horizontal clamp (9), the base (6), the side frame (8) and the top frame (10) are spliced through the quick horizontal clamp (9), and the side frame (8) is connected with the cold box (3) and the hot box (5) through quick buckling.

8. The combined cold and hot box test platform of claim 7, wherein, The base (6) is provided with mobile casters (7) on the lower portion.

9. The combined cold and hot box test platform of any one of claims 3-5, wherein, The guide pressing plate support (20) and the clamp support (26) are alternately arranged along the test piece limiting frame (13).

10. The combined cold and hot box test platform of any one of claims 1-5, wherein, The materials of the cold box (3), the hot box (5) and the outer frame are polyurethane plates.

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