An explosion-proof high and low temperature test chamber

Abstract

The utility model discloses an explosion-proof high and low temperature test box, including a test box body arranged in an explosion-proof room, the test box body is provided with a test chamber, a low temperature control chamber and a high temperature control module, the low temperature control chamber and the high temperature control module are both connected to the test chamber, the low temperature control chamber circulates the test chamber air through the low temperature air duct to generate a low temperature in the test chamber, the high temperature control module circulates the air through the high temperature air duct to generate a high temperature in the test chamber, and the high temperature air duct and the low temperature air duct overlap in the test chamber. The test box body of the utility model is provided with a test chamber, a low temperature control chamber and a high temperature control module, the low temperature control chamber generates a low temperature in the test chamber, the high temperature control module generates a high temperature in the test chamber, the temperature control chamber and the high temperature control module share a test chamber, the total volume of the test box is greatly reduced, the manufacturing cost and the difficulty of maintenance are reduced, and it is easier to deploy and use in laboratories or production environments with limited space.

Description

Technical Field

[0001] The utility model relates to the field of detection technology, and more specifically to an explosion-proof high and low temperature test box. Background Art

[0002] The interior of the high and low temperature test chamber is the working room, which is mainly used to place large test pieces for high and low temperature humidity and heat tests or to provide other services for users. The working room of this box ranges from a few cubic meters to thousands of cubic meters, and there are usually people walking or vehicles driving in the working room.

[0003] Since this type of large test chamber is mainly used to perform high and low temperature humidity and heat tests on large test pieces, for example, motor products usually need to undergo corresponding performance tests after they are produced to analyze their performance and facilitate subsequent research and development to bring about improvements and optimizations. This requires placing the motor in a test chamber to simulate various extreme usage environments such as high and low temperatures to test the performance of the product.

[0004] The temperature range in the test chamber is usually -55℃~+300℃, because many materials and products need to be tested under extreme temperature conditions to simulate various environments in actual use. In order to achieve this temperature range, the test chamber usually uses an evaporator to cool down. However, when the evaporator works in a high temperature environment, if the temperature exceeds 200℃, it will be damaged. Therefore, how to effectively prevent the evaporator from being damaged at high temperatures has become an important issue in the design of the test chamber.

[0005] In order to solve this problem, some test chambers adopt a double-layer structure design. For example, China Patent No. CN215218884U discloses a double-layer flameproof high and low temperature test chamber, which divides the test chamber into two upper and lower working chambers, one as a high temperature chamber and the other as a low temperature chamber. The advantage of this design is that the high temperature and low temperature chambers can be used for high temperature tests and low temperature tests respectively without interfering with each other. In this way, the evaporator will not be damaged.

[0006] However, this double-layer test chamber also has some problems. Since the high-temperature chamber and the low-temperature chamber work separately, the total volume is large, which is not convenient for laboratories and production workshops with limited space. In addition, the double-layer structure design also increases the manufacturing cost and maintenance difficulty.

[0007] The above problems are worth solving. Utility Model Content

[0008] In order to overcome the problems of the existing double-layer test box in which the high temperature chamber and the low temperature chamber work separately, the total volume is large, and the manufacturing cost and maintenance difficulty are high, the utility model provides an explosion-proof high and low temperature test box.

[0009] The technical solution of the utility model is as follows:

[0010] An explosion-proof high and low temperature test chamber, comprising a test chamber body arranged in the explosion-proof room, the test chamber body is provided with a test chamber, a low temperature control chamber and a high temperature control module, the low temperature control chamber and the high temperature control module are both connected to the test chamber, the low temperature control chamber circulates the air in the test chamber through a low temperature air duct to generate a low temperature in the test chamber, the high temperature control module circulates the air in the test chamber through a high temperature air duct to generate a high temperature in the test chamber, and the high temperature air duct and the low temperature air duct overlap in the test chamber.

[0011] Furthermore, the low-temperature control chamber is arranged inside the test box, and pneumatic dampers are arranged at both ends of the low-temperature control chamber. After the pneumatic dampers at both ends of the low-temperature control chamber are opened, low-temperature air duct circulation is performed.

[0012] Furthermore, the low-temperature control chamber includes a low-temperature explosion-proof motor, and a centrifugal fan wheel, an evaporator and a low-temperature air duct explosion-proof heater connected to the output end of the low-temperature explosion-proof motor. When conducting a low-temperature test, the pneumatic damper is in an open state. After the low-temperature explosion-proof motor is turned on, the air in the test chamber circulates through the evaporator, the low-temperature air duct explosion-proof heater, and the centrifugal fan wheel and then disperses into the interior of the test chamber.

[0013] Furthermore, the high temperature control module is arranged above the test box.

[0014] Furthermore, the high temperature control module includes an explosion-proof fan, a high temperature air duct explosion-proof heater and a high temperature exhaust port, the explosion-proof fan is connected to the high temperature air duct explosion-proof heater, the high temperature air duct explosion-proof heater is connected to the test chamber, and the high temperature exhaust port is connected to the test chamber, and is used to introduce outdoor air from the air inlet of the explosion-proof fan, heat it by the high temperature air duct explosion-proof heater, and then blow it into the test chamber, and the test chamber is discharged from the high temperature exhaust port after the temperature is raised.

[0015] Furthermore, the high temperature control module also includes a high temperature explosion-proof motor, which is arranged between the high temperature air duct explosion-proof heater and the test chamber and is used to circulate the air in the test chamber.

[0016] Furthermore, it also includes a mechanical room, in which a refrigeration unit and a heat dissipation fan are arranged, the refrigeration unit is used to provide cooling for the test box, and the heat dissipation fan is used to provide heat dissipation for the mechanical room.

[0017] Furthermore, it also includes a power distribution cabinet for supplying power to the test box.

[0018] Furthermore, an explosion-proof wiring cabinet is provided outside the test box for centralizing all the wires inside the test box and connecting to the power distribution cabinet.

[0019] Furthermore, the test box is provided with a balance window for balancing the temperature inside the test box.

[0020] The utility model according to the above scheme has the beneficial effect that a test chamber, a low-temperature control chamber and a high-temperature control module are provided in the test box body of the utility model. The low-temperature control chamber makes the test chamber generate a low temperature, and the high-temperature control module makes the test chamber generate a high temperature. The temperature control chamber and the high-temperature control module share one test chamber. The total volume of the test box is greatly reduced, which reduces the manufacturing cost and the difficulty of maintenance, making it easier to deploy and use in laboratories or production environments with limited space. The high-temperature control module and the low-temperature control chamber do not interfere with each other during operation, ensuring the stability of their respective environments, thereby improving the reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a top view of the utility model;

[0023] Figure 3 It is a right view of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the low-temperature air duct of the test box of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the high temperature air duct of the test box of the utility model;

[0026] Figure 6 for Figure 4 Schematic diagram of the enlarged structure of part A.

[0027] In the drawings, the reference numerals are as follows:

[0028] 1. Test box; 11. Test chamber; 12. Low temperature control chamber; 121. Low temperature air duct; 122. Pneumatic damper; 123. Low temperature explosion-proof motor; 124. Evaporator; 125. Low temperature air duct explosion-proof heater; 13. High temperature control module; 131. High temperature air duct; 132. Explosion-proof fan; 1321. Air inlet; 133. High temperature air duct explosion-proof heater; 134. High temperature exhaust port; 135. High temperature explosion-proof motor; 14. Test box door;

[0029] 2. Mechanical room;

[0030] 3. Power distribution cabinet;

[0031] 4. Explosion-proof wiring cabinet;

[0032] 5. Balance window. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. Terms such as "setting" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "bottom", etc. are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0035] like Figure 1-Figure 6 As shown, this embodiment provides an explosion-proof high and low temperature test box, in which a test chamber 11, a low temperature control chamber 12 and a high temperature control module 13 are provided in the test box body 1. The low temperature control chamber 12 makes the test chamber 11 generate low temperature, and the high temperature control module 13 makes the test chamber 11 generate high temperature. The low temperature air duct 121 and the high temperature air duct 131 overlap in the test chamber 11, that is, the low temperature control chamber 12 and the high temperature control module 13 share a test chamber 11. The total volume of the test box is greatly reduced, and the manufacturing cost and maintenance difficulty are reduced, making it easier to deploy and use in laboratories or production environments with limited space. The high temperature control module 13 and the low temperature control chamber 12 do not interfere with each other during operation, ensuring the stability of their respective environments, thereby improving the reliability of the test results.

[0036] Specifically, the explosion-proof high and low temperature test box includes a test box body 1 arranged in the explosion-proof room, and the test box body 1 is provided with a test chamber 11, a low temperature control chamber 12 and a high temperature control module 13, and the low temperature control chamber 12 and the high temperature control module 13 are both connected to the test chamber 11. The low temperature control chamber 12 circulates the air in the test chamber 11 through the low temperature air duct 121 to generate a low temperature in the test chamber 11, and the high temperature control module 13 circulates the air in the test chamber 11 through the high temperature air duct 131 to generate a high temperature in the test chamber 11, and the high temperature air duct 131 and the low temperature air duct 121 overlap in the test chamber 11.

[0037] The test chamber 11 is the main area for testing, which can simulate different temperature and humidity conditions. The low temperature control chamber 12 generates low temperature air through refrigeration and circulates it through the low temperature air duct 121, so that the required low temperature environment is generated in the test chamber 11. The high temperature control module 13 generates high temperature air through heating and circulates it through the high temperature air duct 131, so that the required high temperature environment is generated in the test chamber 11. Through the low temperature control chamber 12 and the high temperature control module 13, the test box can quickly and accurately simulate the required low temperature or high temperature environment, providing strong support for product performance and reliability testing.

[0038] like Figure 4 and Figure 5 As shown, in one embodiment, the low temperature control chamber 12 is arranged inside the test box 1, and pneumatic dampers 122 are arranged at both ends of the low temperature control chamber 12. After the pneumatic dampers 122 at both ends of the low temperature control chamber 12 are opened, the low temperature air duct 121 circulates. Specifically, by adjusting the opening and closing of the pneumatic damper 122, the opening and closing of the low temperature control chamber 12 are dynamically adjusted. The pneumatic damper 122 is connected to the control panel and is controlled by a highly sensitive pneumatic element, so that it can quickly respond to operating instructions and realize instant adjustment of the low temperature.

[0039] The low temperature control chamber 12 is equipped with multiple key components that work together to ensure the stability and safety of the low temperature environment. The low temperature control chamber 12 includes a low temperature explosion-proof motor 123, and a centrifugal fan connected to the output end of the low temperature explosion-proof motor 123, an evaporator 124, and a low temperature air duct explosion-proof heater 125. When performing a low temperature test, the pneumatic damper 122 is in an open state, the low temperature explosion-proof motor 123 is turned on, and the air in the test chamber 11 circulates through the evaporator 124, the low temperature air duct explosion-proof heater 125, and the centrifugal fan and then disperses into the inside of the test chamber 11.

[0040] Specifically, when using the test box for low-temperature testing, the pneumatic damper 122 is opened, the low-temperature explosion-proof motor 123 is turned on, and the centrifugal wind wheel starts to rotate, generating centrifugal force to drive the air in the test chamber 11 to circulate. Under the action of the centrifugal wind wheel, the air in the test chamber 11 is sucked into the low-temperature control chamber 12, passes through the evaporator 124 (the evaporator 124 is a key component to achieve a low-temperature environment, and uses the evaporation heat absorption principle of the liquid refrigerant to cool the air to the required low-temperature state), the low-temperature air duct explosion-proof heater 125 (the low-temperature air duct explosion-proof heater 125 heats the cooled air to prevent the condensation of water vapor in the air, resulting in frost or water accumulation inside the low-temperature control chamber 12), and the centrifugal wind wheel, and then dispersed into the test chamber 11 again. The above process is continuously repeated to ensure a low-temperature environment in the test chamber 11 to meet the test requirements.

[0041] like Figure 4 and Figure 5 As shown, in one embodiment, the high temperature control module 13 is disposed above the test box 1. When the high temperature control module 13 is heating, it is away from the low temperature control chamber 12 to ensure the safety of the components in the low temperature control chamber 12.

[0042] The high temperature control module 13 includes an explosion-proof fan 132, a high temperature air duct explosion-proof heater 133 and a high temperature exhaust port 134. The explosion-proof fan 132 is connected to the high temperature air duct explosion-proof heater 133, the high temperature air duct explosion-proof heater 133 is connected to the test chamber 11, and the high temperature exhaust port 134 is connected to the test chamber 11. It is used to introduce outdoor air from the air inlet 1321 of the explosion-proof fan 132, heat it with the high temperature air duct explosion-proof heater 133, and then blow it into the test chamber 11. After the temperature in the test chamber 11 is raised, the air is discharged from the high temperature exhaust port 134 to prevent the temperature in the test chamber 11 from being too high.

[0043] The high temperature control module 13 also includes a high temperature explosion-proof motor 135, which is disposed between the high temperature air duct explosion-proof heater 133 and the test chamber 11, and is used to circulate the air in the test chamber 11. Driven by the high temperature explosion-proof motor 135, the air in the test chamber 11 can flow continuously, ensuring uniform temperature distribution in the entire chamber and improving the accuracy of the test.

[0044] Specifically, when the test chamber is used for high temperature testing, the pneumatic damper 122 is closed, the high temperature explosion-proof motor 135 and the explosion-proof fan 132 are turned on, the centrifugal wind wheel starts to rotate, and centrifugal force is generated, driving the air in the test chamber 11 to circulate under the action of the centrifugal wind wheel, and the air inlet 1321 of the explosion-proof fan 132 introduces outdoor air to the high temperature air duct explosion-proof heater 133 (heating the outdoor air introduced by the air inlet 1321 to reach the required high temperature state), and the centrifugal wind wheel blows to the test chamber 11, and the temperature in the test chamber 11 will rise rapidly. The high temperature gas in the test chamber 11 circulates in the test chamber 11 under the action of the centrifugal wind wheel (this cycle is not heated by the high temperature explosion-proof heater) or is discharged from the high temperature exhaust port 134. The high temperature gas in the test chamber 11 does not circulate with the high temperature air duct explosion-proof heater 133, ensuring that the temperature in the box meets the use requirements.

[0045] like Figure 1 and Figure 2 As shown, in one embodiment, it also includes a mechanical room 2, in which a refrigeration unit and a heat dissipation fan are provided. The refrigeration unit is used to provide cooling for the test box 1, and the heat dissipation fan is used to provide heat dissipation for the mechanical room 2, so as to discharge the heat in the mechanical room 2 in time, ensure that the temperature in the mechanical room 2 is maintained in an appropriate range, provide guarantee for the stable operation of the test box, and ensure that the test box can operate stably.

[0046] like Figure 1 and Figure 2 As shown, in one embodiment, a power distribution cabinet 3 is also included, which is used to supply power to the test box 1. The power distribution cabinet 3 is arranged on one side of the test box 1, and is used to supply power to the test box 1 and the mechanical room 2. In this embodiment, the inside of the power distribution cabinet 3 is an electrical control system for the entire device. Specifically, a control panel and a main power switch are provided on the front face of the power distribution cabinet 3. The main power switch is used to control the power on and off of the entire power distribution cabinet 3. The main power switch adopts a mechanical switch or a solid-state switch, and has overload protection and short-circuit protection functions to ensure the normal operation of the power distribution cabinet 3. The main power switch is located next to the control panel, which is convenient for the operator to quickly cut off or connect the power.

[0047] Specifically, the control panel is provided with a controller, an over-temperature alarm, a cumulative time display and an emergency stop button; the controller is used to receive and process signals from various sensors, and automatically control the power distribution cabinet 3 according to the preset program and control logic. The controller adopts an intelligent control chip such as a microprocessor or a programmable logic controller (PLC); the over-temperature alarm includes a temperature sensor and an alarm. When the temperature inside the power distribution cabinet 3 exceeds the preset safety range, the over-temperature alarm triggers an alarm to remind the operator to deal with it in time; to prevent safety accidents such as damage or fire caused by overheating of the equipment; the cumulative time display is a device in the power distribution cabinet 3 for recording the running time of the equipment. The cumulative time display includes a timer or a liquid crystal display screen. Through the cumulative time display, the operator can understand the running time of the explosion-proof high and low temperature test box. The emergency stop button adopts a large red button design, which is easy to find and press quickly in an emergency, so as to quickly stop the operation of the equipment. When encountering an emergency or needing to stop the test box 1 immediately, the operator presses the emergency stop button to trigger the emergency stop function, so that the equipment stops running quickly.

[0048] like Figure 4 and Figure 5 As shown, in one embodiment, an explosion-proof wiring cabinet 4 is provided outside the test box 1, which is used to centralize all wires in the test box 1 and connect to the power distribution cabinet 3. Specifically, all outgoing wires are protected by explosion-proof bushings, and all wires in the test box 1 are first centralized in the explosion-proof wiring cabinet 4 and then connected to the power distribution cabinet 3 by an explosion-proof bushing.

[0049] In one embodiment, the test box 1 is a sheet metal structure, especially made of stainless steel sheet, which has high strength and stability, can withstand temperature changes and pressure fluctuations during the test, and ensure the stability of the box during operation.

[0050] like Figure 2 As shown, in one embodiment, a balancing window is provided on the test box 1 for balancing the internal temperature of the test box 1 .

[0051] like Figure 1 As shown, in one embodiment, a test box door 14 is provided on the test box body 1, and both left and right sides of the test box door 14 are equipped with explosion-proof chains, such as heavy-duty hinges, and door locks, which can fully seal the test box door 14.

[0052] An explosion-proof observation window is provided on the test chamber door 14, and an explosion-proof LED lamp is provided inside the observation window.

[0053] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0054] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An explosion-proof high and low temperature test chamber, characterized in that: The invention comprises a test box body arranged in an explosion-proof room, wherein the test box body is provided with a test chamber, a low-temperature control chamber and a high-temperature control module, wherein the low-temperature control chamber and the high-temperature control module are both connected to the test chamber, the low-temperature control chamber circulates the air in the test chamber through a low-temperature air duct to generate a low temperature in the test chamber, the high-temperature control module circulates the air through a high-temperature air duct to generate a high temperature in the test chamber, and the high-temperature air duct and the low-temperature air duct overlap in the test chamber.

2. The explosion-proof high and low temperature test chamber according to claim 1, characterized in that: The low temperature control chamber is arranged inside the test box, and pneumatic dampers are arranged at both ends of the low temperature control chamber. After the pneumatic dampers at both ends of the low temperature control chamber are opened, low temperature air duct circulation is performed.

3. The explosion-proof high and low temperature test chamber according to claim 2, characterized in that: The low-temperature control chamber includes a low-temperature explosion-proof motor, and a centrifugal fan wheel, an evaporator and a low-temperature air duct explosion-proof heater connected to the output end of the low-temperature explosion-proof motor. When conducting a low-temperature test, the pneumatic damper is in an open state. After the low-temperature explosion-proof motor is turned on, the air in the test chamber circulates through the evaporator, the low-temperature air duct explosion-proof heater, and the centrifugal fan wheel and then disperses into the interior of the test chamber.

4. The explosion-proof high and low temperature test chamber according to claim 1, characterized in that: The high temperature control module is arranged above the test box.

5. The explosion-proof high and low temperature test chamber according to claim 4, characterized in that: The high temperature control module includes an explosion-proof fan, a high temperature air duct explosion-proof heater and a high temperature exhaust port, the explosion-proof fan is connected to the high temperature air duct explosion-proof heater, the high temperature air duct explosion-proof heater is connected to the test chamber, and the high temperature exhaust port is connected to the test chamber.

6. The explosion-proof high and low temperature test chamber according to claim 5, characterized in that: The high temperature control module further includes a high temperature explosion-proof motor, and the high temperature explosion-proof motor is arranged between the high temperature air duct explosion-proof heater and the test chamber.

7. The explosion-proof high and low temperature test chamber according to claim 1, characterized in that: It also includes a mechanical room, in which a refrigeration unit and a heat dissipation fan are arranged. The refrigeration unit is used to provide cooling for the test box, and the heat dissipation fan is used to provide heat dissipation for the mechanical room.

8. The explosion-proof high and low temperature test chamber according to claim 1, characterized in that: It also includes a power distribution cabinet for supplying power to the test box.

9. The explosion-proof high and low temperature test chamber according to claim 8, characterized in that: An explosion-proof wiring cabinet is arranged outside the test box to collect all the wires in the test box and connect the power distribution cabinet.

10. The explosion-proof high and low temperature test chamber according to claim 1, characterized in that: The test box is provided with a balance window for balancing the internal temperature of the test box.

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