A temperature rising structure and intermittent operation life test equipment

Abstract

The utility model discloses a kind of heating structure and intermittent working life test equipment, belong to test heating technical field, the heating structure includes detection box, the detection box side is hinged with draw door, the detection box inner wall is divided into detection area and work area by partition, the work area inner wall bottom end is fixedly installed heating box, the heating box inner wall top end is fixedly installed guide table, the guide table bottom end is fixedly installed annular heat pipe, the detection box outside is installed with the controller matched with the heat pipe, the heating box inner wall is fixedly installed support plate, fan is installed on the support plate, the heating box outside is fixedly installed multiple first blow pipe, the first blow pipe is U-shaped and one end is penetrated in the detection box side wall and extend to the detection area, the equipment temperature control is accurate and uniform, can guarantee test accuracy;It is convenient to operate and positioning is stable, can improve efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heating technology for testing equipment, and more specifically, to a heating structure and intermittent working life testing equipment. Background Technology

[0002] In the mechanical field, intermittent working life testing equipment is often used to simulate different environmental conditions and test the performance stability and service life of various parts or products under long-term intermittent operation. One of its core requirements is to ensure the precise control and uniform distribution of the test environment temperature in order to guarantee the reliability of the test results. However, the heating structures of existing intermittent working life testing equipment generally have many shortcomings: Some equipment has an unreasonable layout of heating components, often employing unidirectional or localized heating methods, resulting in large temperature gradient differences within the testing area. This leads to uneven heating of different parts of the test piece, easily causing localized overheating or substandard temperatures, directly affecting the accuracy of the test data. While some equipment has a hot air delivery structure, uneven airflow distribution during transmission is common, and the lack of effective guidance and diversion design further exacerbates the temperature inhomogeneity in the testing area. Simultaneously, the test piece support structures in existing equipment are mostly fixed installations or designs with high sliding resistance, making the placement or removal of test pieces cumbersome and difficult to achieve rapid and accurate positioning, thus affecting testing efficiency. Furthermore, the ventilation and exhaust systems of some equipment lack control flexibility, failing to adjust the exhaust status in a timely manner according to real-time air pressure and temperature changes in the testing area. This can not only affect equipment safety due to excessive internal pressure but also cause temperature fluctuations in the testing area due to untimely exhaust, interfering with the testing process. These problems collectively result in existing testing equipment failing to meet the requirements for high-precision testing in terms of testing accuracy, ease of operation, and operational stability. There is an urgent need to propose an optimized heating structure and intermittent working life testing equipment to address these shortcomings. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a heating structure and intermittent working life testing equipment, which aims to improve the problem that some equipment has an unreasonable layout of heating components, often using unidirectional or local heating methods, resulting in large temperature gradient differences in the test area, uneven heating of different parts of the test piece, and easy occurrence of local overheating or substandard temperature, which directly affects the accuracy of test data.

[0004] In a first aspect, this utility model provides a heating structure, including a detection box, a sliding door hinged to one side of the detection box, an inner wall of the detection box divided into a detection area and a working area by a partition, a temperature sensor installed in the detection area, a heating box fixedly installed at the bottom of the inner wall of the working area, a guide platform fixedly installed at the top of the inner wall of the heating box, an annular heat-conducting pipe fixedly installed at the bottom of the guide platform, a controller cooperating with the heat-conducting pipe installed on the outside of the detection box, a support plate fixedly installed on the inner wall of the heating box, a fan installed on the support plate, and multiple first air blowing pipes fixedly installed on the outside of the heating box, the first air blowing pipes being U-shaped and having one end penetrating through the side wall of the detection box and extending into the detection area.

[0005] In a preferred embodiment of this utility model, the arc-shaped surface and bottom end of the guide platform are both inclined, one end of the heat-conducting pipe is aligned with the arc-shaped surface of the guide platform, and the heat-conducting pipe is arranged in a ring on three sides of the detection box.

[0006] In a preferred embodiment of this utility model, suction pipes are symmetrically fixedly installed on the bottom outer side of the heating box, one end of the suction pipe passes through the detection box and is equipped with a first dustproof net, and the suction pipe is located below the fan.

[0007] In a preferred embodiment of this utility model, a second air pipe is fixed to the outside of the first air pipe, one end of the second air pipe passes through the detection box and communicates with the detection area, and an air guide hopper is fixedly installed at one end of both the first air pipe and the second air pipe, and a second dustproof net is installed on the inner wall of the air guide hopper.

[0008] In a preferred embodiment of this utility model, a diversion plate is fixedly installed on the inner wall of the air guide hopper. The diversion plate is L-shaped and distributes the air in the first air blowing pipe evenly into the two air guide hoppers.

[0009] In a preferred embodiment of this utility model, an exhaust pipe is fixedly installed at the top of the testing box, a baffle is fixedly installed at the top of the exhaust pipe, multiple exhaust holes are provided on the outside of the exhaust pipe, and a solenoid valve is installed on the exhaust pipe. The baffle is frustum-shaped.

[0010] Secondly, this utility model also provides an intermittent working life testing device, including the above-mentioned heating structure and a support frame. The inner walls of the testing chamber are provided with guide rails that cooperate with the support frame. The support frame is slidably connected to the inner walls of the guide rails. The support frame is provided with ventilation holes. The air guides on the first air pipe and the second air pipe are symmetrically arranged on both sides of the support frame.

[0011] In a preferred embodiment of this utility model, vertical plates are fixedly installed at the four corners of the bottom of the shelf, and pulleys are installed at the bottom of the vertical plates. When the shelf is slidably installed in the guide rail, the pulleys slide in contact with the top of the partition.

[0012] In a preferred embodiment of this utility model, guide rods are symmetrically fixedly installed between the partition and the bottom of the inner wall of the detection box, and brackets are slidably installed on the two guide rods. A spring is fixedly installed between the bracket and the partition, and a positioning plate is fixedly installed at the top of the bracket. The top of the positioning plate slides through the partition and extends to the outside, and one side of the positioning plate is fitted and positioned against one side of the vertical plate.

[0013] The beneficial effects of this utility model are: Precise and uniform temperature control: This invention utilizes heat-conducting pipes arranged in a ring on three sides of the testing chamber, combined with an inclined guide platform, to ensure that the air delivered by the fan fully contacts the heat-conducting pipes, significantly improving air heating efficiency. Simultaneously, the dual-pipe design of the first and second air-blowing pipes, combined with the L-shaped diverter plate inside the air duct to evenly distribute airflow, allows hot air to be symmetrically delivered from both sides of the tray. Furthermore, the ventilation holes on the tray promote hot air circulation, effectively eliminating temperature gradients in the testing area and ensuring uniform heating of all parts of the test piece, providing crucial assurance for the accuracy of test results.

[0014] Easy to operate and stable in positioning: The rack is slidably installed through the cooperation of guide rails and pulleys. The pulleys slide in close contact with the top of the partition, which significantly reduces frictional resistance, making it easy for operators to push in or pull out the rack to place and remove test pieces. In addition, the positioning structure composed of guide rods, springs and positioning plates can automatically reset and fit against the vertical plate after the rack is fully pushed in, without the need for additional manual fixing. This simplifies the operation process and prevents the rack from shifting during testing, improving the ease of use and testing stability of the equipment.

[0015] Safe and highly adaptable: The exhaust pipe at the top of the testing chamber is equipped with a solenoid valve and a frustum-shaped baffle. The solenoid valve can flexibly control the exhaust state according to the real-time air pressure and temperature of the testing area, avoiding excessive internal pressure or abnormal temperature fluctuations, and ensuring the safe operation of the equipment. The frustum-shaped baffle can effectively prevent external debris from falling into the exhaust pipe. At the same time, the controller on the outside of the testing chamber can precisely adjust the heating power of the heat pipe and the fan speed, which can simulate the working environment under different temperature conditions, meet the intermittent working life testing needs of different types of test pieces, and greatly improve the applicability of the equipment.

[0016] Excellent dustproof performance: The first dustproof net on the air intake pipe can block dust carried by the external air from entering the working area, and prevent dust from adhering to the surface of components such as heat pipes and fans, which will affect the heating efficiency and equipment life; the second dustproof net on the inner wall of the air guide duct can prevent dust or specimen debris in the testing area from entering the air duct and causing blockage, further ensuring the long-term stable operation of the equipment and reducing the frequency and cost of maintenance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a heating structure provided by an embodiment of the present invention; Figure 2 A side view of a heating structure provided for an embodiment of this utility model; Figure 3 A cross-sectional view of the detection box is provided for the embodiment of this utility model; Figure 4 This is a partial structural diagram of a heating structure provided in an embodiment of the present invention; Figure 5 A schematic diagram of the heat pipe structure is provided for the embodiments of this utility model; Figure 6 A cross-sectional view of the first air blowing pipe is provided for the embodiment of this utility model; Figure 7 A schematic diagram of the internal structure of the heating box is provided for the embodiments of this utility model; Figure 8 A schematic diagram of the structure of the shelf is provided for the embodiments of this utility model; Figure 9 This invention provides a structural schematic diagram of an intermittent working life testing device.

[0019] In the diagram: 110-Detection box; 111-Sliding door; 112-Baffle; 113-Exhaust duct; 120-Heating box; 121-Guide platform; 122-Heat pipe; 123-Support plate; 124-Fan; 125-First air duct; 126-Suction pipe; 127-Second air duct; 128-Air guide hopper; 129-Diverter plate; 210-Shelf; 211-Guide rail; 212-Vertical plate; 220-Guide rod; 221-Bracket; 222-Spring; 223-Positioning plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-7 This utility model provides a heating structure, including a detection box 110. A sliding door 111 is hinged to one side of the detection box 110. The inner wall of the detection box 110 is divided into a detection area and a working area by a partition 112. A heating box 120 is fixedly installed at the bottom of the inner wall of the working area. A guide platform 121 is fixedly installed at the top of the inner wall of the heating box 120. An annular heat-conducting pipe 122 is fixedly installed at the bottom of the guide platform 121. A controller that cooperates with the heat-conducting pipe 122 is installed on the outside of the detection box 110. A support plate 123 is fixedly installed on the inner wall of the heating box 120. A fan 124 is installed on the support plate 123. Multiple first air blowing pipes 125 are fixedly installed on the outside of the heating box 120. The first air blowing pipes 125 are U-shaped and one end passes through the side wall of the detection box 110 and extends into the detection area.

[0022] In some specific implementation schemes, the arc-shaped surface and bottom of the guide platform 121 are inclined. One end of the heat pipe 122 is aligned with the arc-shaped surface of the guide platform 121. The heat pipe 122 is arranged in a ring on three sides of the detection box 110. The inclined guide platform 121 can accurately guide the air delivered by the fan 124, allowing the air to flow more smoothly to the heat pipe 122, avoiding air stagnation in the heating box 120, and improving the contact efficiency between the air and the heat pipe 122. The heat pipe 122, which is distributed in a ring on three sides of the detection box 110, greatly increases the heating area, which can quickly increase the air temperature in the heating box 120, and allows the air to contact the heat source from multiple directions, ensuring that the air is heated evenly, laying the foundation for delivering hot air at a stable temperature to the detection area in the future.

[0023] In some specific implementation schemes, suction pipes 126 are symmetrically fixedly installed on the bottom outer side of the heating box 120. When the fan 124 is started, it can quickly draw fresh air from outside the detection box 110 through the suction pipes 126 to ensure the air supply required for heating and avoid the problem of insufficient air in the heating box 120 leading to a decrease in heating efficiency. One end of the suction pipe 126 passes through the detection box 110 and is equipped with a first dustproof net. The suction pipe 126 is located below the fan 124. The first dustproof net can effectively block dust and impurities in the outside air from entering the interior of the heating box 120, prevent dust from adhering to the surface of the heat conduction pipe 122 and the fan 124, affect their working performance, extend the service life of the components, and reduce the frequency of equipment maintenance.

[0024] In some specific implementation schemes, an exhaust pipe 113 is fixedly installed on the top of the testing box 110, and a baffle is fixedly installed on the top of the exhaust pipe 113. Multiple exhaust holes are provided on the outside of the exhaust pipe 113, and a solenoid valve is installed on the exhaust pipe 113. The baffle is frustum-shaped, which can effectively prevent external dust, rainwater, debris, etc. from falling into the exhaust pipe 113, preventing the exhaust holes from being blocked and ensuring the smooth flow of exhaust. The solenoid valve can flexibly control the opening and closing of the exhaust pipe 113 according to the actual temperature and air pressure of the testing area. When the temperature or air pressure in the testing area is too high, the solenoid valve can be opened to quickly discharge excess hot air or air through the exhaust holes, maintaining the stability of the testing area environment and avoiding the impact of abnormal temperature and air pressure on the testing process. At the same time, the solenoid valve can be closed when the temperature and air pressure in the testing area are suitable to reduce heat loss and reduce energy consumption.

[0025] Please see Figure 4 and Figure 6 A second air duct 127 is fixed to the outside of the first air duct 125. One end of the second air duct 127 passes through the test box 110 and is connected to the test area. A guide hopper 128 is fixedly installed at one end of both the first air duct 125 and the second air duct 127. A second dustproof net is installed on the inner wall of the guide hopper 128. The guide hopper 128 can gather and guide the hot air output from the air duct, avoid the diffusion of hot air, and ensure that the hot air is accurately blown to the test piece. The second dustproof net can prevent dust and test piece debris in the test area from entering the first air duct 125 and the second air duct 127 and causing blockage, ensuring smooth air duct and maintaining the stability of hot air delivery.

[0026] In some specific implementation schemes, a diverter plate 129 is fixedly installed on the inner wall of the air guide hopper 128. The diverter plate 129 is L-shaped and distributes the air in the first air duct 125 evenly to the two air guide hoppers 128. The L-shaped diverter plate 129 can evenly distribute the hot air in the first air duct 125, avoiding the situation where the air volume is concentrated in one air guide hopper 128 during the delivery process, and ensuring that the hot air output of the two air guide hoppers 128 is consistent. This allows different positions in the testing area to obtain a uniform supply of hot air, especially for the test pieces on both sides of the rack 210, which can ensure that they are heated evenly, reduce test errors caused by uneven distribution of hot air, and improve the accuracy of test results.

[0027] Please see Figure 8 and Figure 9 This utility model embodiment also provides an intermittent working life testing device, including the above-mentioned heating structure and a support frame 210. The inner walls of the test box 110 are provided with guide rails 211 that cooperate with the support frame 210. The support frame 210 is slidably connected to the inner walls of the guide rails 211. The support frame 210 is provided with ventilation holes. The air guides 128 on the first air pipe 125 and the second air pipe 127 are symmetrically arranged on both sides of the support frame 210.

[0028] In some specific implementations, vertical plates 212 are fixedly installed at the four corners of the bottom of the shelf 210. The bottom of the vertical plates 212 is equipped with pulleys. When the shelf 210 is slidably installed in the guide rail 211, the pulleys slide in contact with the top of the partition 112. The pulleys convert the sliding friction between the shelf 210 and the guide rail 211 and the partition 112 into rolling friction, which greatly reduces the sliding resistance and makes it easier for the operator to push the shelf 210. At the same time, it can also reduce the wear between the shelf 210, the guide rail 211 and the partition 112, and extend the service life of the components.

[0029] In some specific implementations, guide rods 220 are symmetrically fixed between the partition 112 and the bottom of the inner wall of the test box 110. A bracket 221 is slidably installed on both guide rods 220. A spring 222 is fixedly installed between the bracket 221 and the partition 112. A positioning plate 223 is fixedly installed at the top of the bracket 221. The top of the positioning plate 223 slides through the partition 112 and extends to the outside. One side of the positioning plate 223 is positioned against the side of the vertical plate 212 to prevent the rack 210 from sliding during the test. At the same time, when it is necessary to pull out the rack 210, simply push the rack 210 to make the vertical plate 212 press against the positioning plate 223 to release the positioning. The operation is simple and convenient, improving the flexibility of the equipment.

[0030] In some specific implementation plans, Working principle: Before conducting the intermittent working life test, push the support rack 210 to slide along the guide rails 211 on both sides of the inner wall of the test chamber 110. The pulleys on the four corner vertical plates 212 at the bottom of the support rack 210 slide against the top of the partition 112 to reduce sliding friction and facilitate easy insertion. During the insertion process, pull the bracket 221 to move the positioning plate 223 down to the removal test area. At the same time, the spring 222 is stretched. After the support rack 210 is fully pushed in, release the bracket 221. The spring 222 returns to its original position through the tension and moves the bracket 221 and the positioning plate 223 upward. One side of the positioning plate 223 is in contact with one side of the vertical plate 212 to achieve the positioning of the support rack 210. Then, place the test piece on the support rack 210 and close the sliding door 111.

[0031] At the start of the test, the heat pipe 122 inside the heating box 120 is activated by the controller on the outside of the test chamber 110. The heat pipe 122 is arranged in a ring on three sides of the test chamber 110 and begins to generate heat and heat the surrounding air. At the same time, the fan 124 on the support plate 123 is activated, and the air intake pipe 126 below the fan 124 draws air from outside the test chamber 110 (the first dustproof net on the air intake pipe 126 can prevent dust from entering). The drawn air flows upward under the action of the fan 124 and is guided by the guide platform 121 (whose arc surface and bottom end are inclined and aligned with one end of the heat pipe 122) to make more full contact with the heat pipe 122 and heat up.

[0032] The heated air enters the first air blowing pipe 125, and part of the air is diverted through the second air blowing pipe 127 outside the first air blowing pipe 125. The air guide hopper 128 (with a second dustproof net on the inner wall) at one end of the first air blowing pipe 125 and the second air blowing pipe 127 delivers the hot air to the testing area. The air guide hopper 128 is symmetrically arranged on both sides of the tray 210. The L-shaped diverting plate 129 inside the air guide hopper 128 evenly distributes the air in the first air blowing pipe 125 to the two air guide hoppers 128, so that the hot air is evenly blown onto the test piece on the tray 210. The ventilation holes on the tray 210 also help the hot air circulate inside the testing area, ensuring that the temperature around the test piece is uniform.

[0033] During testing, if the air pressure or temperature inside the testing area is too high, the solenoid valve on the exhaust pipe 113 can be opened, and the air in the testing area will be discharged through the exhaust port on the outside of the exhaust pipe 113. The frustum-shaped baffle at the top of the exhaust pipe 113 can prevent external debris from falling in. The controller can adjust the heating power of the heat pipe 122 and the speed of the fan 124 according to the testing requirements to achieve precise temperature control of the testing area, thereby simulating different working environments and completing the intermittent working life test of the test piece. After the test, open the sliding door 111, push the rack 210 again to make the vertical plate 212 press against the positioning plate 223, release the positioning, pull out the rack 210, and take out the tested test piece.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heating structure, comprising a detection chamber, wherein a sliding door is hinged to one side of the detection chamber, characterized in that, The inner wall of the testing chamber is divided into a testing area and a working area by a partition. A heating box is fixedly installed at the bottom of the inner wall of the working area, a guide platform is fixedly installed at the top of the inner wall of the heating box, and an annular heat-conducting pipe is fixedly installed at the bottom of the guide platform. A controller that cooperates with the heat-conducting pipe is installed on the outside of the testing chamber. A support plate is fixedly installed on the inner wall of the heating box, and a fan is installed on the support plate. Multiple first air blowing pipes are fixedly installed on the outside of the heating box. The first air blowing pipes are U-shaped and one end passes through the side wall of the testing chamber and extends into the testing area.

2. The heating structure according to claim 1, characterized in that, The curved surface and bottom of the guide platform are both inclined, and one end of the heat pipe is aligned with the curved surface of the guide platform.

3. The heating structure according to claim 1, characterized in that, The heating box has suction pipes symmetrically fixedly installed at the bottom outer side, and one end of the suction pipe passes through the detection box and is equipped with a first dustproof net.

4. The heating structure according to claim 1, characterized in that, A second air pipe is fixed to the outside of the first air pipe. One end of the second air pipe passes through the detection box and communicates with the detection area. An air guide hopper is fixedly installed at one end of both the first air pipe and the second air pipe. A second dustproof net is installed on the inner wall of the air guide hopper.

5. The heating structure according to claim 4, characterized in that, A flow divider plate is fixedly installed on the inner wall of the air guide hopper, and the flow divider plate is L-shaped.

6. The heating structure according to claim 1, characterized in that, An exhaust pipe is fixedly installed on the top of the testing box, a baffle is fixedly installed on the top of the exhaust pipe, multiple exhaust holes are provided on the outside of the exhaust pipe, and a solenoid valve is installed on the exhaust pipe.

7. An intermittent working life testing device, characterized in that, The device includes the heating structure and the support frame as described in any one of claims 1-6, wherein the inner walls of the detection chamber are provided with guide rails that cooperate with the support frame, and the support frame is slidably connected to the inner walls of the guide rails.

8. The intermittent working life testing device according to claim 7, characterized in that, Vertical plates are fixedly installed at the four corners of the bottom of the shelf, and pulleys are installed at the bottom of the vertical plates.

9. The intermittent working life testing device according to claim 7, characterized in that, Guide rods are symmetrically fixed between the partition and the bottom of the inner wall of the detection box. A bracket is slidably installed on both guide rods. A spring is fixedly installed between the bracket and the partition. A positioning plate is fixedly installed at the top of the bracket. The top of the positioning plate slides through the partition and extends to the outside.

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