CN215414283U - Vibration test box - Google Patents
Vibration test box Download PDFInfo
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- CN215414283U CN215414283U CN202121655672.8U CN202121655672U CN215414283U CN 215414283 U CN215414283 U CN 215414283U CN 202121655672 U CN202121655672 U CN 202121655672U CN 215414283 U CN215414283 U CN 215414283U
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Abstract
The utility model provides a vibration test box which comprises a vibration table assembly, a high-temperature box, a low-temperature box and a first ventilation pipe, wherein the high-temperature box comprises a high-temperature box body and a heating device, the low-temperature box comprises a low-temperature box body and a refrigerating device, the vibration table assembly comprises a vibration table body arranged outside the high-temperature box body, a vibration table surface connected with the vibration table body and protruding into the high-temperature box body, the low-temperature box body is communicated with the high-temperature box body through the first ventilation pipe, and a circulating fan used for blowing low-temperature air in the low-temperature box body into the high-temperature box body and a first valve used for controlling the communication between the low-temperature box body and the high-temperature box body are arranged in the first ventilation pipe. The vibration test box provided by the utility model has the advantages that the high-temperature box and the low-temperature box which are mutually communicated are arranged, so that the test environment of the vibration test under the complex conditions of high temperature, low temperature, high-low temperature transformation and the like is realized, the mechanical refrigeration device is utilized to realize the vibration test, the cost is low, and the effect is good.
Description
Technical Field
The utility model relates to a vibration test box.
Background
The test box is a general term of products in the environmental test industry, a natural climate environment is simulated in an effective space range, and a vibration environment is required to be added on some moving parts for testing, so that the test box can be combined with a vibration table to form a comprehensive test box.
When testing the heat insulating material of devices such as engine, blast pipe or other test pieces of laminating with it, need to test low temperature, high temperature, and at present when testing heat insulating material, it is single environmental test usually, independent low temperature test, independent high temperature test, because engine, blast pipe are the motion in the use, the environment that it faces is high temperature, low temperature, the environment that the vibration is synthesized, the event is single environmental test only, have certain gap with in-service use, lead to experimental effect unsatisfactory, can increase the energy consumption simultaneously.
In addition, the existing refrigerant is chemically changed in the high-temperature environment, lubricating oil in the refrigerating system can be carbonized, system faults can be caused, and the refrigerating device cannot be normally used. And the liquid nitrogen is used for refrigeration, so that the cost is extremely high on one hand, and the danger is easy to occur on the other hand.
In view of the above, there is a need to improve the existing vibration test chamber to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a vibration test box to solve the problem that the existing vibration test box can only realize single environmental test.
In order to achieve the purpose, the utility model provides a vibration test box which comprises a vibration table assembly, a high-temperature box, a low-temperature box and a first ventilation pipe, wherein the high-temperature box comprises a high-temperature box body and a heating device, the low-temperature box comprises a low-temperature box body and a refrigerating device, the vibration table assembly comprises a vibration table body arranged outside the high-temperature box body, a vibration table surface connected with the vibration table body and protruding into the high-temperature box body, the low-temperature box body is communicated with the high-temperature box body through the first ventilation pipe, and a circulating fan used for blowing low-temperature air in the low-temperature box body into the high-temperature box body and a first valve used for controlling the communication between the low-temperature box body and the high-temperature box body are arranged in the first ventilation pipe.
As a further improvement of the present invention, the refrigeration device includes an evaporator disposed in the low-temperature box, and a refrigeration unit disposed outside the low-temperature box.
As a further improvement of the present invention, the low temperature box further includes a first long axis fan, the first long axis fan includes a first impeller and a first motor that are connected to each other, the first impeller is disposed in the low temperature box, and the first motor is disposed outside the low temperature box.
As a further improvement of the utility model, the low-temperature box also comprises a first temperature sensor and a first air pressure sensor which are arranged in the low-temperature box body.
As a further improvement of the present invention, the high temperature box further includes a second long axis fan, the second long axis fan includes a second impeller and a second motor that are connected to each other, the second impeller is disposed in the high temperature box, and the second motor is disposed outside the high temperature box.
As a further improvement of the present invention, the high temperature box further includes a second temperature sensor and a second air pressure sensor disposed in the high temperature box.
As a further improvement of the utility model, the vibration test box further comprises a second vent pipe, the high-temperature box body and the low-temperature box body are further communicated through the second vent pipe, and a second valve used for controlling the communication between the low-temperature box body and the high-temperature box body is arranged in the second vent pipe.
As a further improvement of the present invention, the second ventilation pipe is disposed below the first ventilation pipe, and a third temperature sensor is disposed in the second ventilation pipe.
As a further improvement of the utility model, the vibration table component further comprises a moving coil arranged between the vibration table body and the vibration table surface, a fourth temperature sensor used for detecting the temperature of the moving coil, and a constant temperature unit connected with the moving coil and used for controlling the temperature of the moving coil.
The vibration test box further comprises a PLC control unit used for controlling the heating device and the refrigerating device.
The utility model has the beneficial effects that: the vibration test box provided by the utility model has the advantages that the high-temperature box and the low-temperature box which are mutually communicated are arranged, so that the test environment of the vibration test under the complex conditions of high temperature, low temperature, high-low temperature transformation and the like is realized, the mechanical refrigeration device is utilized to realize the vibration test, the cost is low, and the effect is good.
Drawings
FIG. 1 is a schematic structural view of a vibration test chamber of the present invention;
FIG. 2 is a schematic diagram of the structure of the vibration table assembly of the vibration test chamber of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the vibration test chamber 100 of the present invention includes a vibration table assembly 1, a high temperature chamber 2, a low temperature chamber 3, a first ventilation duct 4, a second ventilation duct 5, and a PLC control unit.
The low temperature box 3 includes a low temperature box body 31, a refrigerating device 32, a first long axis fan 33, a first temperature sensor 34 and a first air pressure sensor 35 which are arranged in the low temperature box body 31.
The outer wall of the low-temperature box body 31 is made of a heat insulation material so as to ensure that the temperature in the low-temperature box body 31 is relatively stable.
The refrigerating apparatus 32 includes an evaporator 321 disposed in the low temperature cabinet 31, and a refrigerating unit 322 disposed outside the low temperature cabinet 31. The evaporator 321 is used for generating low temperature, and the refrigeration unit 322 is used for exchanging heat with the outside. In the embodiment, a mechanical refrigeration mode is adopted, so that the problems of high cost and danger of a liquid nitrogen refrigeration mode are solved.
The first long axis fan 33 includes a first impeller 331 and a first motor 332 connected to each other, the first impeller 331 is disposed inside the low temperature chamber 31, and the first motor 332 is disposed outside the low temperature chamber 31. When the first motor 332 is started, the first impeller 331 can be driven to rotate, so that the temperature in the low-temperature box 31 is more balanced. The first motor 332 is disposed outside the low temperature tank 31, and thus the first motor 332 is prevented from being excessively cooled and malfunctioning.
The first temperature sensor 34 and the first air pressure sensor 35 are electrically connected to the PLC control unit, and transmit a temperature signal and an air pressure signal in the low-temperature box 31 to the PLC control unit, respectively.
The high temperature box 2 comprises a high temperature box body 21, a heating device 22, a second long axis fan 23, a second temperature sensor 24 and a second air pressure sensor 25 which are arranged in the high temperature box body 21.
The outer wall of the high-temperature box body 21 is made of a heat insulation material so as to ensure that the temperature in the high-temperature box body 21 is relatively stable.
In this embodiment, the heating device 22 is a heating wire for generating heat to change the test temperature in the high temperature box 21. In this embodiment, the temperature in the high temperature box 21 may reach 200 ℃ to 850 ℃. Since the temperature in the high temperature box 21 is high, the evaporator 321 is easily damaged if it is provided in the high temperature box 21, and therefore, the low temperature box 31 and the high temperature box 21 are provided separately in this embodiment.
The second long axis fan 23 includes a second impeller 231 and a second motor 232 connected to each other, the second impeller 231 is disposed inside the high temperature chamber 21, and the second motor 232 is disposed outside the high temperature chamber 21. When the second motor 232 is started, the second impeller 231 can be driven to rotate, so that the temperature in the high-temperature box 21 is more balanced. The second motor 232 is disposed outside the high temperature box 21, and thus the second motor 232 can be prevented from overheating and malfunctioning.
The second temperature sensor 24 and the second air pressure sensor 25 are electrically connected to the PLC control unit, and transmit a temperature signal and an air pressure signal in the high temperature box 21 to the PLC control unit, respectively.
The low temperature box 31 is communicated with the high temperature box 21 through the first vent pipe 4 and the second vent pipe 5.
A circulating fan 42 for blowing low-temperature air in the low-temperature box body 31 into the high-temperature box body 21 and a first valve 41 for controlling the communication between the low-temperature box body 31 and the high-temperature box body 21 are arranged in the first ventilation pipe 4.
Circulating fan 42 with first valve 41 all with PLC the control unit electric connection, give when needing during cooling down in the high temperature box 21, open first valve 41 with circulating fan 42, can with cold air in the low temperature box 31 spreads into high temperature box 21 into, realizes giving the effect of high temperature box 21 cooling.
A second valve 51 and a third temperature sensor 52 for controlling the communication between the low temperature box 31 and the high temperature box 21 are provided in the second ventilation pipe 5.
The second ventilation pipe 5 is arranged below the first ventilation pipe 4.
The second valve 51 and the third temperature sensor 52 are electrically connected to the PLC control unit. The second valve 51 is opened so that the air in the high temperature chamber 21 can be transferred to the low temperature chamber, which ensures the balance of the air pressures in the high temperature chamber 21 and the low temperature chamber 31.
In this embodiment, the first valve 41 and the second valve 51 are both electric proportional valves, and the PLC control unit determines the temperatures in the high temperature box 21 and the low temperature box 31 to control the opening degree of the first valve 41, so as to achieve the effect of adjusting the temperature in the high temperature box 21.
When the difference in the atmospheric pressure between the high-temperature tank 21 and the low-temperature tank 31 is 50Pa, the second valve 51 is controlled to open. The third temperature sensor 52 detects the temperature in the second ventilation pipe 5 and transmits the temperature to the PLC control unit, and the PLC control unit performs correction according to the detected temperature feedback, thereby adjusting the opening degrees of the first valve 41 and the second valve 51.
The vibrating table component 1 comprises a vibrating table body 11 arranged outside the high-temperature box body 21, a vibrating table top 12 connected with the vibrating table body 11 and protruding into the high-temperature box body 21, a moving coil 13 arranged between the vibrating table body 11 and the vibrating table top 12, a fourth temperature sensor 14 used for detecting the temperature of the moving coil 13, and a constant temperature unit 15 connected with the moving coil 13 and used for controlling the temperature of the moving coil 13.
The vibration table board 12 is used for placing articles to be tested, and the vibration table board 12 is arranged in the high-temperature box body 21, so that the test environment is influenced by the temperature in the high-temperature box body 21.
The high or low temperature in the high temperature box 21 is transmitted to the moving coil 13 through the vibration table 12. Fourth temperature sensor 14 with constant temperature unit 15 with PLC the control unit electric connection, PLC the control unit basis the data that fourth temperature sensor 14 detected to judge whether the temperature of moving coil 13 is too high or low excessively, and then control constant temperature unit 15's work is in order to give moving coil 13 cooling or intensification prevents that the high temperature from causing the damage of moving coil 13.
The PLC control unit is used for receiving a temperature signal and a pressure signal in addition to controlling the operation of the heating device 22 and the cooling device 32, and also controlling the opening degree of the first valve 41 and the second valve 51.
The specific control process of the PLC control unit is as follows:
the operation of the heating device 22 and the cooling device 32 is controlled according to the test required temperature. When the test temperature is higher than the normal temperature, controlling the heating device 22 to start to heat the air in the high-temperature box body 21, and simultaneously controlling the first long-axis fan 33 to start to balance the temperature in the high-temperature box body 21; when the test temperature is lower than the normal temperature, controlling the refrigerating device 32 to work, simultaneously opening the second long-axis fan 23 to make the temperature in the low-temperature box body 31 uniform, and simultaneously opening the first valve 41, the circulating fan 42 and the second valve 51 to convey the low-temperature air to the high-temperature box body 21; when the temperature in the high-temperature box body 21 is high and needs to be cooled down emergently, controlling the refrigerating device 32 to work, simultaneously opening the second long-axis fan 23 to enable the temperature in the low-temperature box body 31 to be uniform, and simultaneously opening the first valve 41, the circulating fan 42 and the second valve 51 to convey the low-temperature air to the high-temperature box body 21; when the temperature in the high-temperature box 21 is low and needs to be raised tightly, the first valve 41, the second valve 51 and the circulating fan 42 are closed, and the heating device 22 is started. The opening degree control of the heating device 22, the cooling device 32, the first valve 41, and the second valve 51, and the like, may be controlled by feedback values of a temperature sensor and a pressure sensor.
The vibration test box 100 of the utility model realizes the test environment of the vibration test under the complex conditions of high temperature, low temperature, high and low temperature transformation and the like by arranging the high temperature box and the low temperature box which are communicated with each other, and can be realized by utilizing the refrigerating device 32 of mechanical refrigeration, thereby having low cost and good effect; by arranging the fourth temperature sensor 14 and the thermostat unit 15, the protection of the moving coil 13 is realized. The vibration test box 100 can realize the test in a complex environment, and has good temperature control effect and lower cost.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A vibration test box is characterized in that: the vibration test box comprises a vibration table assembly, a high-temperature box, a low-temperature box and a first ventilation pipe, wherein the high-temperature box comprises a high-temperature box body and a heating device, the low-temperature box comprises a low-temperature box body and a refrigerating device, the vibration table assembly comprises a vibration table body arranged outside the high-temperature box body, a vibration table surface connected with the vibration table body and protruding into the high-temperature box body, the low-temperature box body is communicated with the high-temperature box body through the first ventilation pipe, and a circulating fan and a first valve are arranged in the first ventilation pipe, the circulating fan is used for blowing low-temperature air in the low-temperature box body into the high-temperature box body, and the first valve is used for controlling the low-temperature box body and the high-temperature box body to be communicated.
2. A vibration test chamber according to claim 1, wherein: the refrigerating device comprises an evaporator arranged in the low-temperature box body and a refrigerating unit arranged outside the low-temperature box body.
3. A vibration test chamber according to claim 2, wherein: the low-temperature box further comprises a first long-axis fan, the first long-axis fan comprises a first impeller and a first motor which are connected with each other, the first impeller is arranged in the low-temperature box body, and the first motor is arranged outside the low-temperature box body.
4. A vibration test chamber according to claim 3, wherein: the low-temperature box also comprises a first temperature sensor and a first air pressure sensor which are arranged in the low-temperature box body.
5. A vibration test chamber according to claim 1, wherein: the high-temperature box further comprises a second long-axis fan, the second long-axis fan comprises a second impeller and a second motor which are connected with each other, the second impeller is arranged in the high-temperature box body, and the second motor is arranged outside the high-temperature box body.
6. A vibration test chamber according to claim 5, wherein: the high-temperature box also comprises a second temperature sensor and a second air pressure sensor which are arranged in the high-temperature box body.
7. A vibration test chamber according to claim 1, wherein: the vibration test box further comprises a second ventilation pipe, the high-temperature box body and the low-temperature box body are further communicated through the second ventilation pipe, and a second valve used for controlling the communication between the low-temperature box body and the high-temperature box body is arranged in the second ventilation pipe.
8. A vibration test chamber according to claim 7, wherein: the second ventilation pipe is arranged below the first ventilation pipe, and a third temperature sensor is arranged in the second ventilation pipe.
9. A vibration test chamber according to claim 1, wherein: the vibrating table component further comprises a moving coil arranged between the vibrating table body and the vibrating table top, a fourth temperature sensor used for detecting the temperature of the moving coil, and a constant temperature unit connected with the moving coil and used for controlling the temperature of the moving coil.
10. A vibration test chamber according to claim 9, wherein: the vibration test box further comprises a PLC control unit used for controlling the heating device and the refrigerating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121655672.8U CN215414283U (en) | 2021-07-21 | 2021-07-21 | Vibration test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121655672.8U CN215414283U (en) | 2021-07-21 | 2021-07-21 | Vibration test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215414283U true CN215414283U (en) | 2022-01-04 |
Family
ID=79651181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121655672.8U Active CN215414283U (en) | 2021-07-21 | 2021-07-21 | Vibration test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215414283U (en) |
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2021
- 2021-07-21 CN CN202121655672.8U patent/CN215414283U/en active Active
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