Device for evaluating high and low temperature test by measuring instrument type
By setting up a refrigeration chamber, a transfer chamber and a heating chamber in the high and low temperature test device, combined with a guide column and a thermal conduction box, the cold/heat loss problem of the meter during environmental changes is solved, and efficient temperature control and energy utilization are achieved.
Patent Information
- Application Number
- CN202420702028.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-08
AI Technical Summary
The existing high and low temperature test devices have problems of cold/heat loss when moving the meter from the cold environment to the hot environment or vice versa, resulting in waste.
An experimental box including a refrigeration chamber, a transfer chamber and a heating chamber was designed. Through a guide column and a thermal frame structure, combined with a refrigerator and an electric heating tube, sealing and temperature control are realized when the meter moves and temperature changes. Avoid cold/heat loss.
It effectively avoids the loss of cold/heat, improves the efficiency and accuracy of the test, and reduces energy waste.
Smart Images
Figure CN222298843U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high and low temperature tests, in particular to a device for high and low temperature tests for type evaluation of measuring instruments. Background Art
[0002] Measuring instruments refer to devices, instruments, measuring tools and standard materials used to unify the values of the measured objects that can be used to directly or indirectly measure the value of the measured object. Measuring instruments are widely used in production, scientific research, people's lives and other aspects, and they play a very important role in the entire metrology legislation. Because the unification of national values is first reflected in the accuracy and consistency of measuring instruments, measuring instruments are not only the main objects of supervision and management, but also the technical basis for the metrology department to provide metrology assurance. The type evaluation of measuring instruments is a link in the type approval, which refers to the technical evaluation of the prototype to determine whether the type of measuring instruments meets the metrological requirements, technical requirements and legal management requirements. At present, before the technical evaluation of the type of measuring instruments is carried out, the performance of the measuring instruments is usually tested, including but not limited to high and low temperature tests.
[0003] However, when the existing high and low temperature test device is in operation, when the meter is moved in a cold / hot environment (i.e., the meter is moved from a cold environment to a hot environment, or from a hot environment to a cold environment), cold / heat will flow out, which will cause waste. Therefore, a device for high and low temperature test of measuring instrument type evaluation is invented. Utility Model Content
[0004] In view of the above-mentioned and / or existing problems in a device for high and low temperature test of type evaluation of measuring instruments, the present utility model is proposed.
[0005] Therefore, the purpose of the present invention is to provide a device for high and low temperature testing of measuring instrument type evaluation, which can solve the above-mentioned existing problems.
[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:
[0007] A device for high and low temperature tests for type evaluation of measuring instruments, comprising a base plate, support plates fixedly mounted at both ends of the top of the base plate, a test box fixedly mounted on the top of the support plate, two groups of partitions fixedly mounted in the inner cavity of the test box, the top space of the test box is set as a refrigeration cavity, the middle space of the test box is set as a transfer cavity, the bottom space of the test box is set as a heating cavity, guide columns are slidably connected at both ends of the test box, and a heat-conducting frame with a meter provided in its inner cavity is fixedly mounted between the two groups of guide columns.
[0008] As a preferred solution of the device for high and low temperature test of measuring instrument type evaluation described in the utility model, a first box door is provided on the test box located on one side of the refrigeration chamber to control the sealing of the refrigeration chamber.
[0009] As a preferred solution of the device for high and low temperature test of type evaluation of measuring instruments described in the utility model, a second box door is provided on the experimental box located on one side of the transfer chamber to control the sealing of the transfer chamber.
[0010] As a preferred solution of the device for high and low temperature test of measuring instrument type evaluation described in the utility model, a third door is provided on the experimental box located on one side of the heating chamber to control the sealing of the heating chamber.
[0011] As a preferred solution of the device for high and low temperature test of type evaluation of measuring instruments described in the utility model, a fourth box door is provided on one side of the heat-conducting box to control the sealing of the heat-conducting box.
[0012] As a preferred solution of the device for high and low temperature test of measuring instrument type evaluation described in the utility model, a cylinder is fixedly installed on the top of the base plate, and the cylinder is fixedly installed on the guide column located below through a piston rod.
[0013] As a preferred solution of the device for high and low temperature test of measuring instrument type evaluation described in the utility model, a refrigerator is fixedly installed on the top of the base plate, a pipe is fixedly installed on the cold air outlet of the refrigerator, and one end of the pipe extends into the refrigeration cavity.
[0014] As a preferred solution of the device for high and low temperature test of type evaluation of measuring instruments described in the utility model, an electric heating tube is fixedly installed in the heating chamber to heat the inner cavity of the heating chamber.
[0015] Compared with existing technologies:
[0016] By sequentially arranging a refrigeration chamber, a transfer chamber and a heating chamber in the experimental box, by arranging guide columns at both ends of the experimental box, and by arranging a heat-conducting frame between the two groups of guide columns, it is possible to avoid loss of cold / heat when the meter is moved in a cold / hot environment and when loading and unloading the meter, thereby avoiding waste to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the front view of the structure of the utility model;
[0018] Figure 2 For this utility model Figure 1A schematic diagram of the structure enlargement in the middle;
[0019] Figure 3 This is a schematic diagram of the structure of the experimental box of the utility model;
[0020] Figure 4 This is a schematic diagram of the guide column and heat conduction frame structure of the utility model.
[0021] In the figure: a bottom plate 10, a support plate 11, a test box 20, a partition 21, a refrigeration chamber 22, a transfer chamber 23, a heating chamber 24, a first box door 25, a second box door 26, a third box door 27, a guide column 30, a heat conduction frame 31, a fourth box door 32, a cylinder 40, a refrigerator 50, a pipeline 51, and an electric heating tube 60. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.
[0023] The utility model provides a device for high and low temperature test of measuring instrument type evaluation, please refer to Figure 1-Figure 4 , including a bottom plate 10, support plates 11 are fixedly installed at both ends of the top of the bottom plate 10, and an experimental box 20 is fixedly installed on the top of the support plate 11. The experimental box 20 is made of heat-insulating material, including but not limited to calcium silicate. Two groups of partitions 21 are fixedly installed in the inner cavity of the experimental box 20. The partitions 21 are made of heat-insulating material, including but not limited to calcium silicate. The top space of the experimental box 20 is set as a refrigeration chamber 22, the middle space of the experimental box 20 is set as a transfer chamber 23, and the bottom space of the experimental box 20 is set as a heating chamber 24. Both ends of the experimental box 20 are slidably connected with guide columns 30. The guide columns 30 are made of heat-insulating material, including but not limited to calcium silicate, and the guide columns 30 pass through the partitions 21. A heat-conducting frame 31 with a meter in its inner cavity is fixedly installed between the two groups of guide columns 30. Sealing strips can be set at the connection between the guide columns 30 and the experimental box 20 and at the connection between the guide columns 30 and the partitions 21 as required. In addition, temperature sensors may be provided in the refrigeration chamber 22 and the heating chamber 24 as required, and ventilation pipes (not marked in the figure) with solenoid valves provided thereon may be provided on the refrigeration chamber 22 and the heating chamber 24 .
[0024] A first door 25 is provided on the experimental box 20 located on one side of the refrigeration chamber 22 to control the sealing of the refrigeration chamber 22, a second door 26 is provided on the experimental box 20 located on one side of the transfer chamber 23 to control the sealing of the transfer chamber 23, a third door 27 is provided on the experimental box 20 located on one side of the heating chamber 24 to control the sealing of the heating chamber 24, and a fourth door 32 is provided on one side of the heat conducting frame 31 to control the sealing of the heat conducting frame 31, wherein the first door 25, the second door 26 and the third door 27 are all made of heat insulating materials, including but not limited to calcium silicate, and sealing strips can be provided at the connection between the experimental box 20 and the first door 25, the connection between the experimental box 20 and the second door 26, the connection between the experimental box 20 and the third door 27, and the connection between the heat conducting frame 31 and the fourth door 32 as required.
[0025] The top of the bottom plate 10 is fixedly mounted with a cylinder 40 , and the cylinder 40 is fixedly mounted with a guide column 30 located below via a piston rod, so that the height of the heat conduction frame 31 can be adjusted.
[0026] A refrigerator 50 is fixedly installed on the top of the base plate 10, a pipe 51 is fixedly installed at the cold air outlet of the refrigerator 50, and one end of the pipe 51 extends into the refrigeration chamber 22, and an electric heating pipe 60 is fixedly installed in the heating chamber 24 to heat the inner cavity of the heating chamber 24.
[0027] Working principle:
[0028] Step 1: The heat-conducting box 31 is placed in the transfer chamber 23 by the cylinder 40, and then the second door 26 and the fourth door 32 are opened in sequence and the meter to be tested is placed in the inner chamber of the heat-conducting box 31, and then the fourth door 32 and the second door 26 are closed in sequence;
[0029] Step 2: The heat-conducting frame 31 is positioned in the heating chamber 24 through the cylinder 40, and then the inner cavity of the heating chamber 24 is heated through the electric heating tube 60, so that the meter can be heated through the heat-conducting frame 31. After being heated to a suitable temperature, the heat-conducting frame 31 can be positioned in the refrigeration chamber 22 through the cylinder 40, and then cold air is injected into the refrigeration chamber 22 through the refrigerator 50 to refrigerate the inner cavity of the refrigeration chamber 22, so that the meter can be refrigerated through the heat-conducting frame 31; in this process, the meter can also be cooled first and then heated;
[0030] Step 3: Repeat step 1 to take out the meter after it has been heated and cooled, and observe its status. At this point, it is possible to perform high and low temperature tests on the meter.
[0031] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A device for high and low temperature test of type evaluation of measuring instruments, comprising a bottom plate (10), with support plates (11) fixedly mounted on both ends of the top of the bottom plate (10), characterized in that: An experimental box (20) is fixedly installed on the top of the support plate (11), and two groups of partitions (21) are fixedly installed in the inner cavity of the experimental box (20). The top space of the experimental box (20) is set as a refrigeration cavity (22), the middle space of the experimental box (20) is set as a transfer cavity (23), and the bottom space of the experimental box (20) is set as a heating cavity (24). Both ends of the experimental box (20) are slidably connected with guide columns (30), and a heat-conducting frame (31) with a meter in its inner cavity is fixedly installed between the two groups of guide columns (30).
2. A device for high and low temperature test of type evaluation of measuring instruments according to claim 1, characterized in that: The experimental box (20) located at one side of the refrigeration chamber (22) is provided with a first box door (25) so as to control the sealing of the refrigeration chamber (22).
3. The device for high and low temperature test of type evaluation of measuring instruments according to claim 1, characterized in that: The experimental box (20) located at one side of the transfer chamber (23) is provided with a second box door (26) so as to control the sealing of the transfer chamber (23).
4. The device for high and low temperature test of type evaluation of measuring instruments according to claim 1, characterized in that: The experimental box (20) located at one side of the heating chamber (24) is provided with a third box door (27) so as to control the sealing of the heating chamber (24).
5. The device for high and low temperature test of type evaluation of measuring instruments according to claim 1, characterized in that: A fourth door (32) is provided on one side of the heat-conducting frame (31) so as to control the sealing of the heat-conducting frame (31).
6. The device for high and low temperature test of type evaluation of measuring instruments according to claim 1, characterized in that: A cylinder (40) is fixedly mounted on the top of the base plate (10), and the cylinder (40) is fixedly mounted on a guide column (30) located below via a piston rod.
7. The device for high and low temperature test of type evaluation of measuring instruments according to claim 1, characterized in that: A refrigerator (50) is fixedly installed on the top of the base plate (10), a pipe (51) is fixedly installed at the cold air outlet of the refrigerator (50), and one end of the pipe (51) extends into the refrigeration cavity (22).
8. The device for high and low temperature test of type evaluation of measuring instruments according to claim 1, characterized in that: An electric heating tube (60) is fixedly installed in the heating chamber (24) so as to heat the inner cavity of the heating chamber (24).