Thermal protection performance testing device

Abstract

The utility model discloses a thermal protection performance testing device which comprises a steam generator, the output end of the steam generator is connected with a steam inlet of a thermal protection performance testing cabin through a pipeline, an electric control door is arranged on the side portion of the thermal protection performance testing cabin, and a window is arranged on the electric control door. A dummy conveying system is arranged at the bottom of the position, where the electric control door is arranged, of the side part of the thermal protection performance test cabin, a dummy fixing pile for mounting a dummy is arranged on the dummy conveying system, and an electric heating air outlet device is arranged in the thermal protection performance test cabin; the device can be used for testing the thermal protection performance of the thermal insulation clothes on heat sources such as high-temperature gas and high-temperature steam.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation performance testing technology for thermal insulation clothing, and in particular to a thermal protection performance testing device. Background Technology

[0002] For thermal insulation clothing, thermal protection performance is the primary testing indicator. To ensure the thermal protection performance of thermal insulation clothing, it is necessary to conduct tests on its thermal protection performance before the product leaves the factory. Currently, there is no dedicated testing equipment. Therefore, it is necessary to design a thermal protection performance testing device that can test the thermal protection performance of thermal insulation clothing against heat sources such as high-temperature gases and high-temperature steam. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a thermal protection performance testing device that can test the thermal protection performance of thermal insulation clothing against heat sources such as high-temperature gases and high-temperature steam.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a thermal protection performance testing device, including a steam generator, the output end of which is connected to the steam inlet of the thermal protection performance testing chamber through a pipeline, an electrically controlled door on the side of the thermal protection performance testing chamber, a viewing window on the electrically controlled door, a dummy conveying system at the bottom of the location where the electrically controlled door is located on the side of the thermal protection performance testing chamber, a dummy fixing stake for installing the dummy on the dummy conveying system, and an electrically heated air outlet device inside the thermal protection performance testing chamber.

[0005] Preferably, the thermal protection performance test chamber is equipped with an exhaust fan at the top and a fresh air inlet at the side.

[0006] Preferably, the thermal protection performance test chamber is also equipped with a temperature sensor, the output end of which is connected to the input end of the control system, and the output end of the control system is connected to the control ends of the exhaust fan, the electric door, the dummy conveying system, the steam generator, and the electric heating air outlet device.

[0007] Preferably, the steam generator outlet is connected to the superheater inlet via an output pipe, and the superheater outlet is connected to the thermal protection performance test chamber inlet via a steam pipe.

[0008] Preferably, the surface of the thermal protection performance test chamber is also provided with an air pressure balance port.

[0009] Preferably, the thermal protection performance test chamber is also equipped with multiple steam injection pipes connected to its steam inlet, with the multiple steam injection pipes pointing towards different positions of the dummy.

[0010] The beneficial effects of this utility model are as follows: This utility model can conduct tests on the thermal protection performance of heat-insulating clothing against heat sources such as high-temperature gases and high-temperature steam. This testing device can generate gases at 25℃-300℃ and high-temperature steam at 100℃-500℃ as heat sources, and achieve automatic temperature control through heat supply and heat exhaust. After setting the temperature, a dummy wearing the heat-insulating clothing and equipped with temperature sensors is sent into the testing device. The temperature sensors record the time and temperature and transmit them to the control system. The data is processed by dedicated software to complete the test on the thermal protection performance of the heat-insulating clothing. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a thermal protection performance testing device (the top plate of the thermal protection performance testing chamber is partially hidden).

[0012] Figure 2 for Figure 1 A schematic diagram of the distribution structure of steam jet pipes inside the intermediate heat protection performance test chamber. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1-2 As shown, a thermal protection performance testing device includes a steam generator 1. The output end of the steam generator 1 is connected to the steam inlet of the thermal protection performance testing chamber 3 via a pipeline. The thermal protection performance testing chamber 3 is provided with an electrically controlled door 3-1 on its side. The electrically controlled door 3-1 is provided with a viewing window 3-2. A dummy conveying system 7 is provided at the bottom of the location where the electrically controlled door 3-1 is located on the side of the thermal protection performance testing chamber 3. The dummy conveying system 7 is provided with dummy fixing stakes 7-1 for installing dummies. An electrically heated air outlet device 3-4 is provided inside the thermal protection performance testing chamber 3.

[0015] In this embodiment, the dummy conveyor system 7 is an automatic chain conveyor line, located below the electrically controlled door 3-1 of the thermal protection performance test chamber, embedded underground, with the track flush with the ground, so as not to affect the opening and closing of the electric door. When the chain conveyor line is started, the dummy enters the test chamber and the electric sliding door closes. The dummy automatically stops when it reaches the designated position. The electric door and the conveyor line are interlocked. The chain conveyor line can only be operated after the electric door is fully open. The dummy fixing post 7-1 is located in the exact center of the automatic chain conveyor line and is used to fix the dummy in place.

[0016] The electric heating air outlet device 3-4 is located on the left side inside the thermal protection performance test chamber 3. When a dry thermal environment test is required, the steam generator 1 and superheater 2 are turned off, and the heater inside the electric heating air outlet device 3-4 is controlled by the control system 8 to blow out hot air at 25℃-300℃, providing a high-temperature dry test environment for the test chamber.

[0017] Preferably, the thermal protection performance test chamber 3 is equipped with an exhaust fan 4 at the top and a fresh air inlet 3-3 on the side. In this embodiment, the exhaust fan 4 is a high-temperature resistant axial flow fan, and the test chamber is equipped with one exhaust fan unit to meet the needs of rapid cooling. When the temperature inside the thermal protection performance test chamber 3 exceeds the set limit, the exhaust fan 4 is turned on to balance the indoor temperature. The exhaust duct is installed at the top of the test chamber, using the principle of bottom wall intake and top exhaust, with a large-capacity fan forcibly exhausting air. When the temperature inside the test chamber is too high, the exhaust fan 4 starts to balance the indoor temperature. When the temperature inside the test chamber is uniform, the exhaust vent is closed. When the temperature exceeds the upper limit of the set value, the exhaust fan automatically starts operating, and at the same time, the fresh air inlet 3-3 (with air intake louvers) installed on the side of the thermal protection performance test chamber 3 draws in outdoor air. When the temperature drops to the lower limit of the set value, the exhaust fan 4 stops exhausting air.

[0018] In addition, when the test is over, ventilation and cooling can be carried out first. After the temperature inside the test chamber drops to normal, the staff can go in to carry out the next step of the operation.

[0019] The air velocity and air pressure of the air circulation system comply with GB / T13274-91 "Technical Conditions for General Purpose Axial Flow Fans" and GB50275-98 "Construction and Acceptance Specifications for Compressor, Fan and Pump Installation Engineering". The performance of the axial flow fan unit is shown in Table 4. The overall noise of the test chamber must comply with the national industrial noise standard GB12348-2008 "Emission Standard for Environmental Noise at the Boundary of Industrial Enterprises".

[0020] Preferably, the thermal protection performance test chamber 3 is further equipped with a temperature sensor 6. The output of the temperature sensor 6 is connected to the input of the control system 8, and the output of the control system 8 is connected to the control terminals of the exhaust fan 4, the electrically controlled door 3-1, the dummy conveying system 7, the steam generator 1, and the electrically heated air outlet device 3-4. In this embodiment, the control system 8 uses a Siemens PLC and a touch screen for control. Five temperature sensors are installed in the test chamber, and the data is displayed in real time on the screen. The control system has a PID automatic calculation function. After the target temperature is set, the temperature control program is automatically executed, which can immediately correct for temperature changes, thereby making the temperature control more accurate. During the test, the readings of the wireless temperature sensors on the dummy can also be displayed in real time on the screen and can be stored and exported at intervals of at least 1 second.

[0021] Specifically, temperature sensors 6 are located at five positions inside the thermal protection performance test chamber 3, including the four corners at the top and the center. The temperature sensors 6 can sense the temperature inside the chamber in real time and transmit it to the control system 8. The control system 8 controls the switching of the steam generator 1, superheater 2, exhaust fan 4, and electric heating air outlet device 3-4 based on the temperature data transmitted back by the temperature sensors 6, thereby controlling the temperature inside the chamber.

[0022] Preferably, the steam generator 1's outlet is connected to the superheater 2's inlet via an output pipe 1-1, and the superheater 2's outlet is connected to the thermal protection performance test chamber 3's inlet via a steam pipe 5. In this embodiment, the steam generator 2 can output high-temperature steam at 100℃-170℃; the superheater 2 is connected to the steam generator 1's steam output end and can heat the steam to a maximum of 500℃.

[0023] Preferably, the surface of the thermal protection performance test chamber 3 is also equipped with an air pressure balancing port. Furthermore, the main body of the thermal protection performance test chamber 3 consists of a frame, inner wall, insulation layer, outer wall, observation window, door, and lighting fixtures. The insulation material is double-sided color steel rock wool board. The insulation layer is 100mm thick, with special aluminum profile edging on both the inside and outside, providing six-sided insulation. The steel surface of the product is coated with polyester, zinc, or aluminum-zinc coatings to prevent corrosion. The test chamber uses a six-sided insulation method, and drainage channels are set at the corners of the chamber walls to drain condensate. Considering the high temperature and humidity environment inside the chamber, the power supply voltage for equipment such as lighting fixtures is 12V. The air pressure balancing port can balance the air pressure inside the thermal protection performance test chamber 3 to prevent it from being too high or too low.

[0024] Preferably, the thermal protection performance test chamber 3 is further equipped with multiple steam injection pipes 3-5 connected to its steam inlet, with the multiple steam injection pipes 3-5 pointing towards different positions of the dummy. In this embodiment, to meet the steam injection test requirements for different parts, the thermal protection performance test chamber 3 is equipped with five steam injection pipes 3-5 at different heights and positions: one at 10cm from the back of the dummy's head, one at 30cm from the back, one at 50cm from the abdomen, one at 100cm from the chest, and one at 200cm from the front. The position and steam flow rate of the steam injection pipes 3-5 can be adjusted according to the test requirements. The steam injection system is as follows: Figure 2 As shown.

[0025] The specific test procedure and principle for the steam jet protection performance test are as follows:

[0026] The wireless temperature sensor is attached to the back of the dummy's head, back, chest, abdomen, and limbs. After the heat insulation suit to be tested is put on, it is fixed to the dummy fixing stake 7-1 in the dummy conveying system 7.

[0027] Turn on the steam generator 1 and superheater 2 and set the required temperature. Use the dedicated control software in the control system 8 to start the self-test mode and check whether the electric control door 3-1, fresh air inlet 3-3, electric heating air outlet device 3-4, steam pipe 5, temperature sensor 6, and dummy conveyor system 7 are working properly.

[0028] After the self-test is completed and the steam generator 1 and superheater 2 reach the set temperature, the "send in dummy" program in the dedicated control software is started, and the program of opening the electric control door 3-2-starting the dummy conveying system 7 to send in the dummy-closing the electric control door is executed automatically.

[0029] After the above procedures are completed, start the "Steam Injection" program in the dedicated control software to automatically execute the steam injection program. The steam injection program is preset, and the position, time and steam temperature of the steam injection are set according to the test requirements.

[0030] After the steam injection procedure is completed, the "send out dummy" procedure in the dedicated control software is started, and the procedure of automatically executing the following steps is executed: 3-2-start the dummy conveying system 7-send out the dummy-close the electric control door. According to the test requirements, if the test personnel need to enter the chamber, the "exhaust and cooling" procedure can be selected to open the exhaust system to quickly cool the chamber by expelling the high-temperature steam.

[0031] During the steam jetting process, temperature sensors attached to the surface of the dummy read the temperature data and transmit it to the computer. Dedicated data collection and processing software in the computer collects the temperature data returned by the sensors and automatically generates a temperature-time curve. The test results can be determined based on this curve, i.e., the protective performance of the thermal insulation clothing against jetting steam.

[0032] The specific test procedure and principle for high-temperature environment protection performance testing are as follows:

[0033] The wireless temperature sensor is attached to the back of the dummy's head, back, chest, abdomen, and limbs. After the heat insulation suit to be tested is put on, it is fixed to the dummy fixing stake 7-1 in the dummy conveying system 7.

[0034] According to the test requirements, selectively open one or more of the electric heating air outlet device 3-4, steam generator 1, and superheater 2, set the required temperature, and use the special control software in the computer control system 8 to start the self-test mode to check whether the electric control door 3-1, fresh air inlet 3-3, electric heating air outlet device 3-4, steam pipe 5, temperature sensor 6, and dummy conveyor system 7 can work normally.

[0035] After the self-test is completed and the temperature inside the thermal protection performance test chamber reaches the set temperature, the "send in dummy" program in the dedicated control software is started, and the program of opening the electric control door 3-2-starting the dummy conveying system 7-sending in the dummy-closing the electric control door is automatically executed.

[0036] After the above procedures are completed, start the "High Temperature Environment" program in the dedicated control software. The program will automatically control the temperature inside the thermal protection performance test chamber.

[0037] Once the set time is reached, the program will automatically execute the "send out dummy" program in the dedicated control software, executing the program of opening the electric control door 3-2-starting the dummy conveying system 7-sending out the dummy-closing the electric control door. According to the test requirements, if it is necessary for test personnel to enter the chamber, the "exhaust and cooling" program can be turned on to open the exhaust system to quickly cool the chamber by expelling high-temperature steam.

[0038] During the test, temperature sensors attached to the surface of the dummy body read the temperature data of the dummy body and transmit the data to the computer. The dedicated data collection and processing software in the computer collects the temperature data transmitted back by the sensors and automatically generates a temperature-time curve. The test results can be judged based on this curve, that is, the heat insulation and protection performance of the heat insulation clothing under test in high-temperature environments.

[0039] The technical specifications for the thermal protection performance test chamber are as follows:

[0040] (1) Internal dimensions of the test chamber: 3000mm×2000mm×2000mm ((L×W×H)); External dimensions of the test chamber: 3500mm×2200mm×2100mm ((L×W×H));

[0041] (2) Door dimensions: 800mm×2000mm (W×H);

[0042] (3) Steam generator power: 30kW;

[0043] (4) Temperature uniformity ≤ ±2℃;

[0044] (5) Output steam temperature range: 100-500℃;

[0045] (6) Temperature fluctuation ≤ ±0.5℃;

[0046] (7) Temperature deviation ≤ 2℃;

[0047] (8) Heating rate: 1-3℃ / min (controllable);

[0048] (9) Automatic chain conveyor line distance control range: 0-2m;

[0049] (10) Cooling performance: The exhaust system can reduce the cabin temperature from 100°C to 40°C within 30 minutes;

[0050] (11) Exhaust performance: The exhaust system can extract all the steam within 5 minutes;

[0051] (12) Noise: The noise level during equipment operation is ≤65 decibels (measured at 1.5m outside the test chamber);

[0052] (13) Safety: The test chamber is grounded and the electrical equipment inside the chamber is explosion-proof.

[0053] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A thermal protection performance testing device, comprising a steam generator (1), wherein the output end of the steam generator (1) is connected to the steam inlet of a thermal protection performance testing chamber (3) via a pipeline, characterized in that: The thermal protection performance test chamber (3) is provided with an electrically controlled door (3-1) on the side. The electrically controlled door (3-1) is provided with a viewing window (3-2). A dummy conveying system (7) is provided at the bottom of the location where the electrically controlled door (3-1) is located on the side of the thermal protection performance test chamber (3). A dummy fixing stake (7-1) for installing the dummy is provided on the dummy conveying system (7). An electrically heated air outlet device (3-4) is provided inside the thermal protection performance test chamber (3).

2. The thermal protection performance testing device according to claim 1, characterized in that: The thermal protection performance test chamber (3) is equipped with an exhaust fan (4) on the top and a fresh air inlet (3-3) on the side.

3. The thermal protection performance testing device according to claim 2, characterized in that: The thermal protection performance test chamber (3) is also equipped with a temperature sensor (6). The output end of the temperature sensor (6) is connected to the input end of the control system (8). The output end of the control system (8) is connected to the control end of the exhaust fan (4), the electric control door (3-1), the dummy conveying system (7), the steam generator (1), and the electric heating air outlet device (3-4).

4. The thermal protection performance testing device according to claim 1, characterized in that: The steam generator (1) outlet is connected to the superheater (2) inlet via an output pipe (1-1), and the superheater (2) outlet is connected to the thermal protection performance test chamber (3) inlet via a steam pipe (5).

5. The thermal protection performance testing device according to claim 1, characterized in that: The surface of the thermal protection performance test chamber (3) is also provided with an air pressure balance port.

6. The thermal protection performance testing device according to claim 1, characterized in that: The thermal protection performance test chamber (3) is also equipped with multiple steam jet pipes (3-5) connected to its steam inlet, with the multiple steam jet pipes (3-5) facing different positions of the dummy.

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