Device for providing hot air for function test of high-altitude temperature detection element

Abstract

The invention provides a device for providing hot air for a function test of a high-altitude temperature detection element. The device comprises a hot air generator and a telescopic corrugated pipe, wherein one end of the corrugated pipe is hermetically connected with an air outlet of the hot air generator, and the other end of the corrugated pipe is arranged towards the to-be-detected high-altitude temperature detection element; when the temperature of the to-be-tested temperature detection element is tested, the other end of the force application corrugated pipe is close to the to-be-tested high-altitude temperature detection element, and the hot air generator is started to send out hot air. By implementing the invention, the problems of inconvenience in operation, high labor intensity, poor test accuracy and the like when a temperature detection element at a high place is subjected to temperature test in the prior art can be solved, and the requirement of testing whether the fan can be automatically started or not at a specified temperature can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature monitoring, and particularly to a device for providing hot air for functional testing of high-altitude temperature detection elements. Background Art

[0002] In many industrial production scenarios, the fan is a key device, and its normal operation is crucial for ensuring the stability and safety of the production process. To ensure that the fan can accurately and reliably start automatically under different temperature conditions, it is necessary to accurately test the temperature detection elements related to the fan startup. These temperature detection elements are usually installed at relatively high positions (such as the top of large industrial plants, high positions of outdoor fan equipment, etc.) to monitor the ambient temperature in real time and feedback accurate temperature information to the fan control system.

[0003] Currently, an ordinary hot air gun is used to test the temperature of the high-altitude temperature detection element. However, the above operation method has many inconveniences, mainly in that: on the one hand, due to the high distance of the temperature detection element from the ground, if the operator holds the hot air gun on the ground, it is difficult to aim at the high-altitude temperature detection element, resulting in the hot air being unable to act on the temperature detection element, which affects the accuracy and reliability of the test; on the other hand, if the operator holds the hot air gun near the temperature detection element at a high altitude, once the hot air gun is held for too long, it will cause the operator to have a risk of personal safety due to high labor intensity.

[0004] In addition, the existing hot air gun is not flexible enough in temperature adjustment and is difficult to meet the precise requirements for testing the temperature detection element of different fans at a specific temperature.

[0005] Therefore, there is an urgent need for a new device for providing hot air for functional testing of high-altitude temperature detection elements, which can solve the problems of inconvenient operation, high labor intensity and poor test accuracy when testing the temperature of high-altitude temperature detection elements in the prior art, so as to meet the requirement of testing whether the fan can start automatically at a specified temperature. Summary of the Invention

[0006] The technical problem to be solved by the embodiments of the present invention is to provide a device for providing hot air for functional testing of high-altitude temperature detection elements, which can not only solve the problems of inconvenient operation, high labor intensity and poor test accuracy when testing the temperature of high-altitude temperature detection elements in the prior art, but also meet the requirement of testing whether the fan can start automatically at a specified temperature.

[0007] To solve the above technical problem, the embodiments of the present invention provide a device for providing hot air for functional testing of high-altitude temperature detection elements, including a hot air generator and a telescopic bellows; wherein,

[0008] One end of the corrugated pipe is hermetically connected to the air outlet of the hot air generator, and the other end is arranged towards the temperature detection element at the high place to be measured.

[0009] When the temperature of the temperature detection element to be measured is tested, a force is applied to the other end of the corrugated pipe to approach the temperature detection element at the high place to be measured, and the hot air generator is turned on to send out hot air.

[0010] It also includes: an air outlet head with adjustable angle; among them,

[0011] The air outlet head is in a hollow tubular shape, and it is fixed to one end of the corrugated pipe arranged towards the temperature detection element at the high place to be measured and is communicated with the corrugated pipe.

[0012] The temperature of the hot air sent out by the hot air generator is adjustable.

[0013] The hot air generator includes a hot air gun body and an adjusting mechanism connected thereto; among them,

[0014] The adjusting mechanism includes a temperature control chamber, a heating circuit, a temperature sensor and a control circuit;

[0015] The temperature control chamber is a hollow cylinder with a closed structure. One end is provided with an air inlet and is hermetically connected to the preset air outlet end on the hot air gun body, and the other end is provided with an air outlet and is hermetically connected to the corrugated pipe;

[0016] The heating circuit includes a heating power supply module, a relay and a heating element; among them, the heating element is installed in the temperature control chamber and is arranged close to the air inlet of the temperature control chamber; the heating power supply module is arranged outside the temperature control chamber and is connected to the heating element through the normally open contact of the relay; the relay is arranged outside the temperature control chamber, and its excitation end is connected to the control circuit;

[0017] The temperature sensor is arranged in the temperature control chamber and is close to the air outlet of the temperature control chamber, and it is connected to the control circuit;

[0018] The control circuit is arranged outside the temperature control chamber, and it is connected to the driving motor preset on the hot air gun body, the excitation end of the relay and the temperature sensor to monitor the real-time temperature of the temperature control chamber, control the rotation speed of the driving motor on the hot air gun body, and control the heating time of the heating element.

[0019] The hot air generator also includes a speed button; among them,

[0020] The speed button is connected to the control circuit to adjust the rotation speed of the driving motor on the hot air gun body by turning the speed button.

[0021] Among them, the hot air generator further includes a temperature button; among them,

[0022] The temperature button is connected to the control circuit to adjust the conduction time of the excitation end of the relay by rotating the temperature button, so that the heating time of the heating element is adjustable.

[0023] Among them, the heating element is a heating wire.

[0024] Among them, the bellows is made of a metal material or an insulating material; among them,

[0025] If the bellows is made of a metal material, it is a retractable, bendable and shape-setting metal bellows;

[0026] If the bellows is made of an insulating material, it is a retractable, bendable and shape-setting epoxy resin bellows.

[0027] Among them, a layer of heat insulation material is coated on the inner wall of the bellows.

[0028] Implementing the embodiments of the present invention has the following beneficial effects:

[0029] 1. When the present invention performs a temperature test on the temperature detection element to be measured, by applying a force to make the other end of the bellows close to the temperature detection element at a high place to be measured and turning on the hot air generator to send out hot air, the problems of inconvenient operation, high labor intensity and poor test accuracy in the prior art when performing a temperature test on a high-place temperature detection element can be solved;

[0030] 2. When the present invention performs a temperature test on the temperature detection element to be measured, the temperature of the hot air sent out by the hot air generator is adjustable, which can meet the precise requirements for testing the temperature detection element at a specific temperature. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present invention.

[0032] Figure 1 It is a simplified plan view of a device for providing hot air for the functional test of a high-place temperature detection element provided in the embodiments of the present invention;

[0033] Figure 2Internal structure connection diagram of a hot air generator in a device for providing hot air for functional testing of a high-altitude temperature detection element provided in an embodiment of the present invention;

[0034] Figure 3 Logic connection block diagram of a heating circuit in a device for providing hot air for functional testing of a high-altitude temperature detection element provided in an embodiment of the present invention. Specific embodiments

[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] As Figures 1 to 3 shown, in an embodiment of the present invention, a device for providing hot air for functional testing of a high-altitude temperature detection element is proposed, including a hot air generator 2 and a telescopic corrugated pipe 1; wherein,

[0037] The corrugated pipe 1 is made of a metal material or an insulating material, and a layer of heat-insulating material is coated on the inner wall of the pipe to prevent the hot air temperature from dissipating. One end of the corrugated pipe 1 is hermetically connected to the air outlet (not shown) of the hot air generator 2, and the other end is arranged towards the direction of the high-altitude temperature detection element to be tested (not shown); wherein, if the corrugated pipe 1 is made of a metal material, it is a telescopic, bendable and shape-retaining metal corrugated pipe; or, if the corrugated pipe 1 is made of an insulating material, it is a telescopic, bendable and shape-retaining epoxy resin corrugated pipe;

[0038] The hot air generator 2 includes a hot air gun body 21 and an adjustment mechanism connected thereto; the adjustment mechanism includes a temperature control chamber 22, a heating circuit 23, a temperature sensor 24 and a control circuit 25; wherein, the temperature control chamber 22 is a hollow cylinder with a closed structure, one end of which is provided with an air inlet 221 and forms a sealed connection with a preset air outlet end (not shown) on the hot air gun body 21, and the other end is provided with an air outlet 222 and forms a sealed connection with the corrugated pipe 1; the heating circuit 23 includes a heating power supply module 231, a relay 232 and a heating element 233; the heating element is a heating wire, which is installed in the temperature control chamber 22 and is arranged close to the air inlet 221 of the temperature control chamber 22; the heating power supply module is arranged outside the temperature control chamber 22 and is connected to the heating element 233 through the normally open contact (not shown) of the relay 232; the relay 232 is arranged outside the temperature control chamber 22, and its excitation end (not shown) is connected to the control circuit 25; the temperature sensor 24 is arranged in the temperature control chamber 22 and is arranged close to the air outlet 222 of the temperature control chamber 22, and is connected to the control circuit 25; the control circuit 25 is arranged outside the temperature control chamber 22, and is connected to a preset drive motor (not shown) on the hot air gun body 21, the excitation end of the relay 232 and the temperature sensor 24 to monitor the real-time temperature of the temperature control chamber 22, control the rotation speed of the drive motor on the hot air gun body 21, and control the heating time of the heating element 233.

[0039] At this time, when performing a temperature test on the temperature detection element to be measured, a force is applied to the other end of the corrugated pipe 1 to approach the temperature detection element at a high place to be measured, and the hot air generator 2 is turned on to send out hot air. Since the temperature of the hot air sent out by the hot air generator 2 is adjustable, the precise requirement for testing the temperature detection element at a specific temperature can be met.

[0040] In the embodiment of the present invention, the hot air generator 2 further includes a rotation speed button 26 and a temperature button 27; wherein, the rotation speed button 26 is connected to the control circuit 25 to adjust the rotation speed of the drive motor on the hot air gun body 21 by rotating the rotation speed button 26; the temperature button 27 is connected to the control circuit 25 to adjust the conduction time of the excitation end of the relay 232 by rotating the temperature button 27, so that the heating time of the heating element 233 is adjustable.

[0041] In the embodiment of the present invention, the device for providing hot air for the function test of the high-place temperature detection element further includes: an air supply head 3 with adjustable angle; wherein, the air supply head 3 is in a hollow tubular shape (or in a flat head shape), and is fixed to one end of the corrugated pipe 1 arranged in the direction towards the high-place temperature detection element to be measured and is in communication with the corrugated pipe 1, so that the hot air sent out by the hot air generator 2 can be more accurately aligned with the temperature detection element to be measured by adjusting the angle.

[0042] At this time, the working principle of a device for providing hot air for the functional test of a high-altitude temperature detection element proposed in the embodiment of the present invention is as follows. First, when it is necessary to test whether the fan can be automatically started at a specified temperature, the length of the corrugated pipe 1 is adjusted according to the height of the temperature detection element related to the fan to ensure that the air supply head 3 can approach the temperature detection element to be tested. At this time, if it is used in a high-voltage area, it is ensured that the corrugated pipe 1 is made of insulating material.

[0043] Secondly, the operator finds a convenient push-button power switch to press to control the start of the fan 21, and controls the heating power supply module 231 to supply power to the heating circuit 23 through the control circuit 25. Further, the rotation speed of the drive motor on the hot air gun body 21 is adjusted by rotating the rotation speed button 26 and the heating time of the heating element 233 is adjusted by rotating the temperature button 27, so that the real-time temperature of the temperature control chamber 22 meets the requirements of the temperature detection element to be tested (the specified temperature corresponding to the start of the fan).

[0044] The hot air gun body 21 blows air into the air inlet 221 of the temperature control chamber 22, and passes through the heating element 233 being heated to form a hot air flow at a certain temperature, and enters the corrugated pipe 1 from the air outlet 222 of the temperature control chamber 22.

[0045] Then, the hot air is transmitted in the corrugated pipe 1. Since the corrugated pipe 1 is made of heat-insulating material, heat loss can be effectively reduced. When the hot air reaches the air supply head 3, the operator rotates and adjusts the angle of the air supply head 3 according to the specific position and angle of the temperature detection element to be tested, so that the hot air is accurately directed to the temperature detection element to be tested, heated to simulate the specified temperature environment required for the start of the fan, and observe whether the fan starts automatically.

[0046] Finally, when the test on whether the fan can be automatically started at a specified temperature is completed, the operator turns off the hot air gun body 21, cuts off the power supply of the heating power supply module 231 to the heating circuit 23, so that the hot air generator 2 stops working, and then shortens the corrugated pipe 1 to a suitable length for easy storage and carrying.

[0047] Implementing the embodiment of the present invention has the following beneficial effects:

[0048] 1. When the present invention performs a temperature test on the temperature detection element to be tested, by applying a force to make the other end of the corrugated pipe close to the high-altitude temperature detection element to be tested and turning on the hot air generator to send out hot air, the problems of inconvenient operation, high labor intensity and poor test accuracy in the prior art when performing a temperature test on a high-altitude temperature detection element can be solved;

[0049] 2. When the present invention performs a temperature test on the temperature detection element to be tested, the temperature of the hot air sent out by the hot air generator is adjustable, which can meet the precise requirements for testing the temperature detection element at a specific temperature.

[0050] The above-disclosed are only the preferred embodiments of the present invention. Certainly, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A device for providing hot air for functional testing of high-altitude temperature detection components, characterized in that: It includes a hot air generator and a retractable bellows; wherein, One end of the bellows is sealed with the air outlet of the hot air generator, and the other end is arranged toward the direction of the high temperature detection element to be measured; When the temperature detection element to be tested is subjected to a temperature test, a force is applied to bring the other end of the bellows close to the high-point temperature detection element to be tested, and the hot air generator is turned on to deliver hot air.

2. The device for providing hot air for functional testing of high-altitude temperature detection components as claimed in claim 1, characterized in that: Also includes: Angle-adjustable air supply head; The air supply head is in the shape of a hollow tube, which is fixed to one end of the bellows that is arranged in the direction of the high temperature detection element to be measured, and is connected to the bellows.

3. The device for providing hot air for functional testing of high-altitude temperature detection elements as claimed in claim 2, characterized in that: The temperature of the hot air delivered by the hot air generator is adjustable.

4. The device for providing hot air for functional testing of high-altitude temperature detection elements as claimed in claim 3, characterized in that: The hot air generator comprises a hot air gun body and an adjustment mechanism connected thereto; wherein, The regulating mechanism includes a temperature control chamber, a heating circuit, a temperature sensor and a control circuit; The temperature control chamber is a hollow cylinder with a closed structure, one end of which is provided with an air inlet and is sealedly connected to the air outlet pre-installed on the hot air gun body, and the other end of which is provided with an air outlet and is sealedly connected to the corrugated pipe; The heating circuit includes a heating power supply module, a relay and a heating element; wherein the heating element is installed in the temperature control chamber and arranged near the air inlet of the temperature control chamber; the heating power supply module is arranged outside the temperature control chamber and connected to the heating element through the normally open contact of the relay; the relay is arranged outside the temperature control chamber, and its excitation end is connected to the control circuit; The temperature sensor is arranged in the temperature control chamber and close to the air outlet of the temperature control chamber, and is connected to the control circuit; The control circuit is arranged outside the temperature control chamber, and is connected to the drive motor preset on the hot air gun body, the excitation end of the relay and the temperature sensor to monitor the real-time temperature of the temperature control chamber, control the rotation speed of the drive motor on the hot air gun body, and control the heating time of the heating element.

5. The device for providing hot air for functional testing of high-altitude temperature detection elements as claimed in claim 4, characterized in that: The hot air generator also includes a speed button; wherein, The speed button is connected to the control circuit so that the speed of the driving motor on the hot air gun body can be adjusted by rotating the speed button.

6. The device for providing hot air for functional testing of high-altitude temperature detection elements as claimed in claim 5, characterized in that: The hot air generator also includes a temperature button; wherein, The temperature button is connected to the control circuit so that the conduction time of the excitation end of the relay can be adjusted by turning the temperature button, so that the heating time of the heating element can be adjusted.

7. The device for providing hot air for functional testing of high-altitude temperature detection elements as claimed in claim 6, characterized in that: The heating element is a heating wire.

8. The device for providing hot air for functional testing of high-altitude temperature detection components as claimed in claim 1, characterized in that: The bellows is made of metal material or insulating material; wherein, If the bellows is made of metal, it is a retractable, bendable and shaping metal bellows; If the bellows is made of insulating material, it is a retractable, bendable epoxy resin bellows with shaping force.

9. The device for providing hot air for functional testing of high-altitude temperature detection elements as claimed in claim 8, characterized in that: A layer of heat insulation material is coated on the inner wall of the corrugated pipe.

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