A monitoring and protection device for high and low temperature test chamber

Abstract

The utility model discloses a monitoring protection device for high and low temperature test box, including gas monitoring subassembly, gas monitoring subassembly includes the gas detection spare, constant temperature water tank and trachea that connect gradually, one end of trachea is inserted into high and low temperature test box, and the other end passes through constant temperature water tank and is linked with gas detection spare, when the gas concentration detection value of gas detection spare exceeds threshold value, and gas detection spare sends alarm signal and / or automatic stop experiment. The utility model has the advantages of can prevent high and low temperature test box's high temperature or low temperature gas and gas detection spare direct contact, and high reliability, and strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of temperature detection equipment technology, and in particular to a monitoring and protection device for high and low temperature test chambers. Background Technology

[0002] High and low temperature test chambers are test equipment that simulates extreme temperature environments. They are mainly used to test the performance and reliability of products under high temperature, low temperature or temperature cycling conditions. They play an important role in various reliability tests of electronic and electrical products such as switch contactors, power capacitors, sensors, and circuit boards in fields such as rail transportation and new energy.

[0003] The high-temperature test chamber has an extremely wide temperature range (-50℃ to 120℃) and humidity levels as high as 98%. Conventional gas detection solutions cannot operate stably and reliably under such harsh conditions. Furthermore, existing gas detection equipment uses USB communication, which has limited transmission distance, and the temperature controller uses RS485 communication, making long-distance centralized monitoring difficult when multiple monitoring devices are used. Utility Model Content The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a monitoring and protection device for high and low temperature test chambers that can prevent high temperature or low temperature gases in high and low temperature test chambers from directly contacting the gas detection components, and has high reliability and strong adaptability.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A monitoring and protection device for a high and low temperature test chamber includes a gas monitoring component. The gas monitoring component includes a gas detector, a constant temperature water bath, and a gas pipe connected in sequence. One end of the gas pipe extends into the high and low temperature test chamber, and the other end passes through the constant temperature water bath and is connected to the gas detector. When the gas concentration detected by the gas detector exceeds a threshold, the gas detector issues an alarm signal and / or automatically stops the experiment.

[0005] As a further improvement to the above technical solution: The gas monitoring component also includes a heater, a cooler, a first temperature sensor, and a first temperature control unit. The heater, cooler, and first temperature sensor are located in a constant temperature water bath. The first temperature control unit is connected to the heater, cooler, and first temperature sensor respectively and is used to control the start and stop of the heater and cooler according to the temperature value measured by the first temperature sensor so that the water temperature in the constant temperature water bath remains constant.

[0006] A gas dryer is provided between the gas tube and the gas detection device.

[0007] The water temperature in the constant temperature water bath is kept constant between 20℃ and 30℃.

[0008] The gas detection device is a pump-type gas alarm.

[0009] The monitoring and protection device for the high and low temperature test chamber further includes a temperature monitoring component, which includes a second temperature sensor and a second temperature control unit. The second temperature sensor is located in the high and low temperature test chamber and is used to detect the temperature of the sample. The second temperature control unit is connected to the second temperature sensor. When the temperature value measured by the second temperature sensor exceeds the threshold, the second temperature control unit issues an alarm signal and / or automatically stops the experiment.

[0010] The monitoring and protection device for the high and low temperature test chamber also includes a host computer and a communication module. The host computer is connected to the communication module via Ethernet. The communication module is connected to the first temperature control and the second temperature control via RS485. The communication module is connected to the gas detection element via USB.

[0011] The monitoring and protection device for the high and low temperature test chamber also includes a power supply, which is connected to the heater, the cooler, the first temperature control unit, the second temperature control unit, and the communication module to provide power.

[0012] The power supply is AC220V.

[0013] The gas detection device is used to detect the concentration of carbon monoxide, hydrogen fluoride, or formaldehyde.

[0014] Compared with the prior art, the advantages of this utility model are: 1. The monitoring and protection device for high and low temperature test chambers of this utility model detects the gas concentration in the test chamber through a gas detection element, which can prevent the concentration of gas (combustible gas or toxic gas) in the test chamber from exceeding the preset safety threshold, thereby avoiding safety accidents such as fires, explosions, and personnel poisoning caused by gas leaks. After the gas in the high and low temperature test chamber is kept at a constant temperature in a constant temperature water bath before detection, it can prevent the high temperature or low temperature gas in the test chamber from directly contacting the gas detection element and causing damage to the gas detection element. It has high reliability and can adapt to the high and low temperature environment in the high and low temperature test chamber, thus having strong adaptability.

[0015] 2. The monitoring and protection device for high and low temperature test chamber of this utility model has a very wide temperature range (-50℃~120℃). When the gas pipe contains low temperature gas, the heater can heat the constant temperature water bath. When the gas pipe contains high temperature gas, the cooler can cool the constant temperature water bath, thereby keeping the water temperature in the constant temperature water bath constant and making it more adaptable.

[0016] 3. The monitoring and protection device for high and low temperature test chambers of this utility model has a gas dryer that can dry the gas passing through the gas pipe to the gas detection element, preventing high humidity gas from damaging the gas detection element, so that the device can adapt to the high humidity environment in high and low temperature tests and has stronger adaptability.

[0017] 4. The monitoring and protection device for high and low temperature test chamber of this utility model detects the temperature of the sample through a second temperature sensor. When the temperature exceeds the threshold, the second temperature sensor issues an alarm signal and / or automatically stops the experiment, which can prevent sample damage or further safety hazards.

[0018] 5. The monitoring and protection device for high and low temperature test chambers of this utility model converts the USB communication of the gas detection element and the RS485 communication of the first temperature control and the second temperature control into network port communication through the communication module, thereby achieving a unified communication mode. It is suitable for batch assembly scenarios that require centralized monitoring and wireless communication monitoring. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the monitoring and protection device for a high and low temperature test chamber according to this utility model.

[0020] The labels in the diagram represent: 1. Gas detection device; 2. Constant temperature water bath; 3. Gas pipe; 4. Gas dryer; 5. Heater; 6. Refrigerator; 7. First temperature sensor; 8. First temperature control unit; 9. Second temperature sensor; 10. Second temperature control unit; 11. Host computer; 12. Communication module; 13. Power supply; 100. High and low temperature test chamber. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figure 1 As shown, the monitoring and protection device for the high and low temperature test chamber in this embodiment includes a gas monitoring component. The gas monitoring component includes a gas detector 1, a constant temperature water bath 2, and a gas pipe 3 connected in sequence. One end of the gas pipe 3 extends into the high and low temperature test chamber 100, and the other end passes through the constant temperature water bath 2 and is connected to the gas detector 1. When the gas concentration detection value of the gas detector 1 exceeds the threshold, the gas detector 1 issues an alarm signal and / or automatically stops the experiment.

[0026] The monitoring and protection device for the high and low temperature test chamber in this embodiment operates as follows: During operation, the sample is tested in the high and low temperature test chamber 100. Gas from the high and low temperature test chamber 100 enters the gas pipe 3, undergoes constant temperature treatment in the constant temperature water bath 2, and then reaches the gas detection element 1 for concentration detection. When the gas concentration detected by the gas detection element 1 exceeds the threshold, the gas detection element 1 issues an alarm signal and / or automatically stops the experiment. This monitoring and protection device for the high and low temperature test chamber, by detecting the gas concentration in the high and low temperature test chamber 100 through the gas detection element 1, can prevent the concentration of gas (combustible gas or toxic gas) in the high and low temperature test chamber 100 from exceeding a preset safety threshold, avoiding safety accidents such as fires, explosions, and personnel poisoning caused by gas leaks. By using the constant temperature water bath 2 to maintain the constant temperature of the gas in the high and low temperature test chamber 100 before detection, it can prevent direct contact between the high-temperature or low-temperature gas in the high and low temperature test chamber 100 and the gas detection element 1, thus preventing damage to the gas detection element 1. This device has high reliability and can adapt to the high and low temperature environment in the high and low temperature test chamber 100, exhibiting strong adaptability.

[0027] Furthermore, in this embodiment, the gas monitoring component also includes a heater 5, a cooler 6 (e.g., a semiconductor cooler), a first temperature sensor 7, and a first temperature control device 8. The heater 5, cooler 6, and first temperature sensor 7 are disposed in the constant temperature water bath 2. The first temperature control device 8 is connected to the heater 5, cooler 6, and first temperature sensor 7 respectively, and is used to control the start and stop of the heater 5 and cooler 6 according to the temperature value measured by the first temperature sensor 7 to keep the water temperature in the constant temperature water bath 2 constant. Since the temperature range in the high and low temperature test chamber 100 is extremely wide (-50℃~120℃), when the gas pipe 3 contains low-temperature gas, the heater 5 can heat the constant temperature water bath 2, and when the gas pipe 3 contains high-temperature gas, the cooler 6 can cool the constant temperature water bath 2, thereby keeping the water temperature in the constant temperature water bath 2 constant and making it more adaptable.

[0028] Furthermore, in this embodiment, a gas dryer 4 is provided between the gas pipe 3 and the gas detection element 1. The gas dryer 4 can dry the gas passed from the gas pipe 3 to the gas detection element 1, preventing high humidity gas from damaging the gas detection element 1, thus enabling the device to adapt to the high humidity environment in the high and low temperature test chamber 100, and making it more adaptable.

[0029] Furthermore, in this embodiment, the water temperature in the constant temperature water bath 2 is kept constant at 20℃~30℃.

[0030] Furthermore, in this embodiment, the gas detection element 1 is a pump-type gas alarm. The pump-type gas alarm can actively extract the gas in the high and low temperature test chamber 100 to realize real-time and reliable acquisition of gas concentration data. It has a simple and reliable structure.

[0031] Furthermore, in this embodiment, the monitoring and protection device for the high and low temperature test chamber also includes a temperature monitoring component. The temperature monitoring component includes a second temperature sensor 9 and a second temperature control unit 10. The second temperature sensor 9 is located in the high and low temperature test chamber 100 and is used to detect the temperature of the sample. The second temperature control unit 10 is connected to the second temperature sensor 9. When the temperature value measured by the second temperature sensor 9 exceeds a threshold, the second temperature control unit 10 issues an alarm signal and / or automatically stops the experiment. By detecting the temperature of the sample through the second temperature sensor 9, and when the temperature exceeds the threshold, the second temperature control unit 10 issues an alarm signal and / or automatically stops the experiment, thus preventing sample damage or further safety hazards.

[0032] Furthermore, in this embodiment, the monitoring and protection device for the high and low temperature test chamber also includes a host computer 11 and a communication module 12. The host computer 11 is connected to the communication module 12 via Ethernet, and the communication module 12 is connected to the first temperature control 8 and the second temperature control 10 via RS485. The communication module 12 is also connected to the gas detection element 1 via USB. The communication module 12 converts the USB communication of the gas detection element 1 and the RS485 communication of the first temperature control 8 and the second temperature control 10 into Ethernet communication, achieving a unified communication mode, suitable for scenarios requiring centralized monitoring and wireless communication monitoring in batch assembly.

[0033] Furthermore, in this embodiment, the monitoring and protection device for the high and low temperature test chamber also includes a power supply 13, which is connected to the heater 5, the cooler 6, the first temperature control 8, the second temperature control 10 and the communication module 12 to provide power.

[0034] Furthermore, in this embodiment, the power supply 13 is AC220V.

[0035] Furthermore, in this embodiment, the gas detector 1 is used to detect the concentration of carbon monoxide. The type of gas detected by the gas detector 1 can also be replaced with hydrogen fluoride, formaldehyde, or other gases as needed, thus broadening its applicability.

[0036] Furthermore, in this embodiment, the gas detector 1 and the second temperature control 10 have a switch alarm interface. Through the LAN interface of the host computer 11 and the switch alarm interfaces of the gas detector 1 and the second temperature control 10, it supports further secondary development to adapt to more complex application scenarios. This makes the device suitable not only for conventional high and low temperature humidity chambers, but also for fire monitoring of samples in rain chambers, salt spray chambers, HALT / HASS chambers, etc.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the spirit and technical solution of the present utility model. Therefore, any simple modifications, equivalent substitutions, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A monitoring and protection device for a high and low temperature test chamber, characterized in that: The gas monitoring component includes a gas detector (1), a constant temperature water bath (2), and a gas tube (3) connected in sequence. One end of the gas tube (3) extends into the high and low temperature test chamber (100), and the other end passes through the constant temperature water bath (2) and is connected to the gas detector (1). When the gas concentration detection value of the gas detector (1) exceeds the threshold, the gas detector (1) issues an alarm signal and / or automatically stops the experiment.

2. The monitoring and protection device for a high and low temperature test chamber according to claim 1, characterized in that: The gas monitoring component also includes a heater (5), a cooler (6), a first temperature sensor (7), and a first temperature control unit (8). The heater (5), cooler (6), and first temperature sensor (7) are located in a constant temperature water bath (2). The first temperature control unit (8) is connected to the heater (5), cooler (6), and first temperature sensor (7) respectively, and is used to control the start and stop of the heater (5) and cooler (6) according to the temperature value measured by the first temperature sensor (7) so that the water temperature in the constant temperature water bath (2) remains constant.

3. The monitoring and protection device for a high and low temperature test chamber according to claim 2, characterized in that: A gas dryer (4) is provided between the gas tube (3) and the gas detection device (1).

4. The monitoring and protection device for a high and low temperature test chamber according to claim 2, characterized in that: The water temperature in the constant temperature water bath (2) is kept constant at 20℃~30℃.

5. The monitoring and protection device for a high and low temperature test chamber according to claim 1, characterized in that: The gas detection device (1) is a pump-type gas alarm.

6. The monitoring and protection device for a high and low temperature test chamber according to claim 2, characterized in that: The monitoring and protection device for the high and low temperature test chamber also includes a temperature monitoring component, which includes a second temperature sensor (9) and a second temperature control (10). The second temperature sensor (9) is located in the high and low temperature test chamber (100) and is used to detect the temperature of the sample. The second temperature control (10) is connected to the second temperature sensor (9). When the temperature value measured by the second temperature sensor (9) exceeds the threshold, the second temperature control (10) issues an alarm signal and / or automatically stops the experiment.

7. The monitoring and protection device for a high and low temperature test chamber according to claim 6, characterized in that: The monitoring and protection device for the high and low temperature test chamber also includes a host computer (11) and a communication module (12). The host computer (11) communicates with the communication module (12) via Ethernet. The communication module (12) communicates with the first temperature control (8) and the second temperature control (10) via RS485. The communication module (12) communicates with the gas detection device (1) via USB.

8. The monitoring and protection device for a high and low temperature test chamber according to claim 7, characterized in that: The monitoring and protection device for the high and low temperature test chamber also includes a power supply (13), which is connected to the heater (5), the cooler (6), the first temperature control (8), the second temperature control (10) and the communication module (12) respectively to provide power.

9. The monitoring and protection device for a high and low temperature test chamber according to claim 8, characterized in that: The power supply (13) is AC220V.

10. The monitoring and protection device for a high and low temperature test chamber according to any one of claims 1 to 9, characterized in that: The gas detection device (1) is used to detect the concentration of carbon monoxide, hydrogen fluoride or formaldehyde.

Images