A temperature rise testing device for an air chamber

Abstract

The utility model relates to the technical field of temperature rise test of gas-filled cabinet, and disclose a kind of temperature rise testing device for gas-filled cabinet, including gas-filled cabinet, the bottom surface of gas-filled cabinet is fixedly installed with shell, the upper end surface of shell is fixedly installed with cover plate, multiple positioning slots are passed through and established in the upper surface of cover plate, the upper surface of cover plate is also passed through and established with multiple sliding channels between the same column positioning slot. In the utility model, by setting movable temperature measuring assembly in the gas-filled cabinet, the linear drive of screw rod is combined with gear rotating mechanism, so that the extrusion block carries temperature measuring assembly accurately to the preset test position, and the test position of temperature measuring assembly is fed back in real time and displayed on the screen by the cooperation of feedback assembly and extrusion block, reduces the positioning error, avoids the influence caused by the positioning difficulty of blind area inside sealed cabinet on temperature rise test.

Description

Technical Field

[0001] This utility model relates to the field of gas-filled cabinet temperature rise testing technology, and in particular to a temperature rise testing device for gas-filled cabinets. Background Technology

[0002] As a key piece of equipment in medium and high voltage power distribution systems, the temperature rise performance of the internal components of gas-insulated switchgear directly affects operational safety.

[0003] The internal seal of a gas-filled switchgear necessitates precise temperature measurement of critical heat-generating points such as contacts and busbar connections during internal temperature rise testing. Furthermore, traditional contact-based temperature measurement using external testing devices requires disrupting the switchgear's seal to install sensors, significantly increasing the risk of insulating gas leakage, especially for environmentally friendly gas switchgear. While existing non-contact infrared technology avoids openings, it is limited by the complex internal structure, unable to penetrate and measure deeper components, thus failing to meet the rapid multi-location testing requirements of high-current switchgear. Therefore, we propose a temperature rise testing device for gas-filled switchgear. Utility Model Content

[0004] The present invention aims to solve the technical problems existing in the prior art and provide a temperature rise testing device for gas-filled cabinets.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a temperature rise testing device for a gas-filled cabinet, comprising a gas-filled cabinet, a housing fixedly installed on the bottom surface of the gas-filled cabinet, a cover plate fixedly installed on the upper end surface of the housing, multiple rows of positioning grooves being formed through the upper surface of the cover plate, and multiple sliding channels being formed through the upper surface of the cover plate between the same row of positioning grooves, a rotatable extrusion block being provided inside one of the positioning grooves in each row, an installation plate being fixedly connected to the bottom surface of the extrusion block, a temperature measuring component being fixedly installed on the upper surface of the extrusion block, and a driving component for driving the installation plate to move being provided inside the housing.

[0006] Preferably, the temperature measuring component includes an electric telescopic rod whose lower end is fixedly connected to the extrusion block, an infrared imaging temperature measuring probe is fixedly installed at the output end of the electric telescopic rod, and a thermocouple temperature measuring probe is fixedly installed on the outer wall of the infrared imaging temperature measuring probe.

[0007] Preferably, the drive assembly includes a threaded rod and a limiting rod rotatably mounted inside the housing. The outer wall of the threaded rod is threadedly connected to a movable seat, and the limiting rod is slidably connected to the movable seat. A servo motor is fixedly mounted on the outer wall of the housing, and the output end of the servo motor is fixedly connected to the threaded rod.

[0008] Preferably, a support column is rotatably connected to the upper surface of the movable seat, a gear ring is fixedly installed on the lower outer wall of the support column, and a drive gear is also rotatably installed on the upper surface of the movable seat, the drive gear meshing with the gear ring.

[0009] Preferably, each of the positioning grooves has a feedback component on both sides of its inner wall. The feedback component includes a receiving groove on both sides of the inner wall of the positioning groove, a telescopic block is slidably connected inside the receiving groove, a pressure sensor is fixedly installed on the inner wall of the receiving groove, and a reset spring is also fixedly connected. The pressure sensor is located inside the reset spring.

[0010] Preferably, the outer wall of the telescopic block located outside the receiving groove is arc-shaped, and one edge of the telescopic block is flush with the inner wall of the positioning groove.

[0011] Preferably, a display screen is fixedly installed on the outer wall of the end of the housing, and the display screen is connected in parallel with multiple sets of feedback components.

[0012] Beneficial effects

[0013] This invention provides a temperature rise testing device for a gas-filled cabinet. It has the following beneficial effects:

[0014] (1) The temperature rise test device for the gas-filled cabinet is provided with a movable temperature measuring component inside the gas-filled cabinet. Combined with the linear drive of the threaded rod and the gear rotation mechanism, the extrusion block carries the temperature measuring component to the preset test position. The test position of the temperature measuring component is fed back in real time through the cooperation of the feedback component and the extrusion block and displayed on the screen, thereby reducing the positioning error and avoiding the impact of the difficulty in positioning the blind area inside the sealed cabinet on the temperature rise test.

[0015] (2) The temperature rise testing device for the gas-filled cabinet can achieve the coordinated operation of horizontal infrared scanning and vertical contact temperature measurement without the need for additional openings, which can both maintain airtightness and cover hot spots in the whole space, thus improving the testing efficiency of the temperature rise inside the gas-filled cabinet. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the shell structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the housing of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the shell structure of this utility model;

[0022] Figure 5 This utility model Figure 3 Enlarged view of a portion of point A in the middle;

[0023] Figure 6 This utility model Figure 4 A magnified view of a portion of point B in the middle.

[0024] Legend: 1. Gas cabinet; 2. Shell; 3. Cover plate; 4. Positioning groove; 5. Sliding channel; 6. Display screen; 7. Electric telescopic rod; 8. Infrared imaging temperature probe; 9. Thermocouple temperature probe; 10. Extrusion block; 11. Servo motor; 12. Threaded rod; 13. Limiting rod; 14. Movable seat; 15. Gear ring; 16. Drive gear; 17. Support column; 18. Mounting plate; 19. Return spring; 20. Receiving groove; 21. Telescopic block; 22. Pressure sensor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-6As shown, a temperature rise testing device for a gas-filled cabinet 1 includes a gas-filled cabinet 1. A housing 2 is fixedly installed on the bottom surface of the gas-filled cabinet 1, and a cover plate 3 is fixedly installed on the upper surface of the housing 2. Multiple rows of positioning grooves 4 are formed through the upper surface of the cover plate 3. Multiple sliding channels 5 are also formed through the upper surface of the cover plate 3 between the same row of positioning grooves 4. A rotatable pressing block 10 is set inside one of the positioning grooves 4 in each row. An mounting plate 18 is fixedly connected to the bottom surface of the pressing block 10. A temperature measuring component is fixedly installed on the upper surface of the pressing block 10. The housing 2... The internal structure is equipped with a drive assembly that drives the mounting plate 18 to move. Some of the multiple positioning slots 4 on the cover plate 3 correspond to the positions of the components to be tested inside the gas chamber 1. Users can number the target positions, and the numbered positioning slots 4 correspond to different temperature rise test positions. Then, the position of the extrusion block 10 is adjusted by the drive assembly until the extrusion block 10 is moved into the corresponding positioning slot 4. The temperature rise of the target test position can then be tested by the temperature measuring component set on the upper surface of the extrusion block 10, thereby realizing automatic testing of the temperature rise inside the gas chamber 1.

[0027] like Figure 2 As shown, the temperature measuring component includes an electric telescopic rod 7 whose lower end is fixedly connected to the extrusion block 10. An infrared imaging temperature measuring probe 8 is fixedly installed at the output end of the electric telescopic rod 7, and a thermocouple temperature measuring probe 9 is fixedly installed on the outer wall of the infrared imaging temperature measuring probe 8. The extension and retraction of the output end of the electric telescopic rod 7 can adjust the height of the entire temperature measuring component. The height of the temperature measuring component is adjusted according to the internal components of the gas-filled cabinet 1 to make way for other components. When the extrusion block 10 reaches the designated detection position, the temperature rise at the designated position can be tested by the infrared imaging temperature measuring probe 8 and the thermocouple temperature measuring probe 9 installed at the end of the output end of the electric telescopic rod 7. The infrared imaging temperature measuring probe 8 can test the temperature rise of components in the horizontal direction, and the thermocouple temperature measuring probe 9 can test the temperature rise of components in the vertical direction by extending and retracting the electric telescopic rod 7.

[0028] like Figure 5 As shown, the drive assembly includes a threaded rod 12 and a limiting rod 13 rotatably mounted inside the housing 2. A movable seat 14 is threadedly connected to the outer wall of the threaded rod 12, and the limiting rod 13 is slidably connected to the movable seat 14. A servo motor 11 is fixedly mounted on the outer wall of the housing 2, and the output end of the servo motor 11 is fixedly connected to the threaded rod 12. The threaded rod 12 is threadedly connected to the movable seat 14, and the movable seat 14 is limited by the limiting rod 13. When the threaded rod 12 rotates, the movable seat 14 can be driven to move along the threaded rod 12 under the action of threaded transmission.

[0029] like Figure 5As shown, a support column 17 is rotatably connected to the upper surface of the movable seat 14, and a gear ring 15 is fixedly installed on the lower outer wall of the support column 17. A drive gear 16 is also rotatably installed on the upper surface of the movable seat 14, and the drive gear 16 meshes with the gear ring 15. A motor is embedded inside the movable seat 14, and the output end of the motor is fixedly connected to the center position of the outer wall of the drive gear 16. The drive gear 16 is driven to rotate by the motor being energized, and then the gear ring 15 is driven to rotate by the drive gear 16.

[0030] like Figure 6 As shown, each positioning groove 4 has a feedback component on both sides of its inner wall. The feedback component includes a receiving groove 20 on both sides of the inner wall of the positioning groove 4. A telescopic block 21 is slidably connected inside the receiving groove 20. A pressure sensor 22 is fixedly installed on the inner wall of the receiving groove 20, and a return spring 19 is also fixedly connected. The pressure sensor 22 is located inside the return spring 19. The setting of the feedback component can reflect the position of the extrusion block 10 and the temperature measuring component installed on the extrusion block 10 on the display screen 6. The user can judge whether the position of the extrusion block 10 is accurate according to the preset number. When the end of the extrusion block 10 does not extrude the end of the telescopic block 21, the telescopic block 21 can be extruded and reset by the receiving groove 20.

[0031] like Figure 6 As shown, the outer wall of the end of the telescopic block 21 outside the receiving groove 20 is arc-shaped, and one side edge of the telescopic block 21 is flush with the inner wall of the positioning groove 4; the end of the extrusion block 10 slides along the inner wall of the positioning groove 4, and under the guidance of the arc-shaped outer wall of the telescopic block 21, the telescopic block 21 can be extruded into the receiving groove 20.

[0032] like Figure 2 As shown, a display screen 6 is fixedly installed on the outer wall of the end of the housing 2, and the display screen 6 is connected in parallel with multiple sets of feedback components. When the pressure sensor 22 in any set of feedback components is triggered, the corresponding line can be connected, thereby reflecting the position of the extrusion block 10 on the display screen 6. The user can judge whether the test position of the extrusion block 10 is accurate by observing the display screen 6.

[0033] The working principle of this utility model is as follows: During use, the bottom surface of the gas-filled cabinet 1 is fixedly mounted on the housing 2, and multiple sets of temperature measuring components extend into the interior of the gas-filled cabinet 1. The positions of the multiple positioning slots 4 opened on the cover plate 3 correspond to the positions of the components to be tested inside the gas-filled cabinet 1. The user can number the multiple positioning slots 4 opened on the cover plate 3 according to the positions of the components to be tested. The user can drive the threaded rod 12 to rotate through the servo motor 11, thereby driving the extrusion blocks 10 in each row to move along the sliding channel 5. The width of the extrusion block 10 is smaller than the width of the sliding channel 5. When the threaded rod 12 rotates, the movable seat 14 threadedly connected to the threaded rod 12 moves along the sliding channel 5. The threaded rod 12 and the limiting rod 13 move. When the movable seat 14 moves to the target test position, the extrusion block 10 and the temperature measuring component fixedly installed on the outer wall of the extrusion block 10 can be moved to the target test position. At this time, the motor drives the drive gear 16 to rotate, which in turn drives the gear ring 15 and the support column 17 to rotate. The mounting plate 18 and the extrusion block 10 are fixedly installed on the upper end of the support column 17. When the support column 17 rotates, the extrusion block 10 rotates inside the positioning groove 4, and both ends of the extrusion block 10 are always in contact with the inner wall of the positioning groove 4. When the extrusion block 10 rotates to the point where both ends correspond to the two telescopic blocks 21 respectively, the two telescopic blocks can be moved by the extrusion block 10. The pressure block 21 is pressed into the housing 20, which in turn presses the pressure sensor 22 located inside the housing 20 via the telescopic block 21. Multiple pressure sensors 22 are connected in parallel with the display screen 6. When one of the pressure sensors 22 is triggered, the position of the pressing block 10 inside the housing 2 is reflected on the display screen 6. The user can judge whether the pressing block 10 is accurately testing the temperature rise inside the gas chamber 1 by observing the display screen 6. The output end of the electric telescopic rod 7 can extend and retract to adjust the height of the entire temperature measuring component. The height of the temperature measuring component is adjusted according to the setting of the internal components of the gas chamber 1 to make way for other components. When the pressing block 10 is pressed into the housing 20, the pressure sensor 22 located inside the housing 20 is pressed into the housing 20. Multiple pressure sensors 22 are connected in parallel with the display screen 6. When one of the pressure sensors 22 is triggered, the position of the pressing block 10 inside the housing 2 is reflected on the display screen 6. When the device reaches the designated detection position, the temperature rise at the designated position can be tested by the infrared imaging temperature probe 8 and the thermocouple temperature probe 9 set at the output end of the electric telescopic rod 7. The infrared imaging temperature probe 8 can test the temperature rise of the components in the horizontal direction, and the thermocouple temperature probe 9 can test the temperature rise of the components in the vertical direction by extending and retracting the electric telescopic rod 7. According to the existing technology, the test can be performed when the thermocouple temperature probe 9 comes into contact with the sample. The temperature rise inside the gas chamber 1 can be automatically tested without damaging the original sealing of the gas chamber 1. When not in use, multiple temperature measuring components are moved to one side of the shell 2.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A temperature rise testing device for a gas-filled cabinet, comprising a gas-filled cabinet (1), characterized in that: The bottom surface of the gas cabinet (1) is fixedly installed with a shell (2), and the upper end surface of the shell (2) is fixedly installed with a cover plate (3). Multiple rows of positioning grooves (4) are opened through the upper surface of the cover plate (3). Multiple sliding channels (5) are also opened through the upper surface of the cover plate (3) between the same row of positioning grooves (4). A rotatable extrusion block (10) is set inside one of the positioning grooves (4) in each row of positioning grooves (4). An installation plate (18) is fixedly connected to the bottom surface of the extrusion block (10). A temperature measuring component is fixedly installed on the upper surface of the extrusion block (10). A drive component that drives the installation plate (18) to move is set inside the shell (2).

2. The temperature rise testing device for a gas-filled cabinet according to claim 1, characterized in that: The temperature measuring component includes an electric telescopic rod (7) whose lower end is fixedly connected to the extrusion block (10). An infrared imaging temperature measuring probe (8) is fixedly installed at the output end of the electric telescopic rod (7). A thermocouple temperature measuring probe (9) is fixedly installed on the outer wall of the infrared imaging temperature measuring probe (8).

3. The temperature rise testing device for a gas-filled cabinet according to claim 2, characterized in that: The drive assembly includes a threaded rod (12) and a limiting rod (13) rotatably installed inside the housing (2). The outer wall of the threaded rod (12) is threadedly connected to a movable seat (14). The limiting rod (13) is slidably connected to the movable seat (14). A servo motor (11) is fixedly installed on the outer wall of the housing (2). The output end of the servo motor (11) is fixedly connected to the threaded rod (12).

4. The temperature rise testing device for a gas-filled cabinet according to claim 3, characterized in that: The upper surface of the movable seat (14) is rotatably connected to a support column (17), and a gear ring (15) is fixedly installed on the lower outer wall of the support column (17). A drive gear (16) is also rotatably installed on the upper surface of the movable seat (14), and the drive gear (16) meshes with the gear ring (15).

5. The temperature rise testing device for a gas-filled cabinet according to claim 4, characterized in that: Feedback components are provided on both sides of the inner wall of each positioning groove (4). The feedback components include receiving grooves (20) opened on both sides of the inner wall of the positioning groove (4). A telescopic block (21) is slidably connected inside the receiving groove (20). A pressure sensor (22) is fixedly installed on the inner wall of the receiving groove (20). A reset spring (19) is also fixedly connected. The pressure sensor (22) is located inside the reset spring (19).

6. The temperature rise testing device for a gas-filled cabinet according to claim 5, characterized in that: The outer wall of the telescopic block (21) located outside the receiving groove (20) is arc-shaped, and one side edge of the telescopic block (21) is flush with the inner wall of the positioning groove (4).

7. The temperature rise testing device for a gas-filled cabinet according to claim 6, characterized in that: The outer wall of the end of the housing (2) is fixedly equipped with a display screen (6), and the display screen (6) is connected in parallel with multiple sets of feedback components.

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