A high-voltage test transformer for building electrical construction

Abstract

The application discloses a high-voltage test transformer for building electrical construction and relates to the technical field of transformers, in particular to a high-voltage test transformer for building electrical construction. The high-voltage test transformer for building electrical construction specifically comprises a test transformer body, a plurality of electric connection columns are arranged on the top of the test transformer body, and a cross-shaped nut and an electric connection sheet assembly are arranged on the top of the electric connection column. The cross-shaped nut is threadedly connected to the top of the electric connection column and can clamp and limit the electric connection sheet assembly connected to the top of the electric connection column. In the process of clamping and limiting the electric connection sheet assembly sleeved on the electric connection column by the cross-shaped nut and the electric connection column, the U-shaped frame plate and the top rod are synchronously pressed down by the cross-shaped nut and drive the two limiting rods to overturn and move aside. After the cross-shaped nut is locked and limited to the electric connection sheet assembly, the two limiting rods are arranged on the two sides of the end of the electric connection sheet assembly and the electric connection column and directly shield and limit under the support of the U-shaped frame plate, thereby improving the anti-falling effect of the electric connection sheet assembly in use.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically to a high-voltage test transformer for building electrical construction. Background Technology

[0002] Currently, in building electrical construction, oil-immersed power transformers or dry-type distribution transformers are mainly installed. These are the core equipment of the power supply and distribution system, used to reduce the voltage of the high-voltage network to the low voltage used by users. The installation of these transformers is subject to strict specifications, including foundation construction, transformer room ventilation design, busbar connection, and grounding system installation. After construction is completed, the equipment cannot be put into operation directly. It must undergo a handover test, which is to conduct a power frequency withstand voltage test on the newly installed transformer using an existing high-voltage test transformer. This involves applying a test voltage higher than the rated voltage to check whether the transformer has suffered insulation damage during transportation and installation, or whether there are defects in the construction process. This ensures that the subsequent building electrical system can operate safely for a long time.

[0003] However, in actual testing, due to the complex environment of the construction site, the lack of any anti-detachment safety measures between the U-shaped connector and the terminal block of the high-voltage test transformer except for the nut pressure limit, and the unprofessional operation of workers, the phenomenon of the U-shaped connector being detached due to pressure and causing the test to be stopped often occurs. Therefore, in order to solve the problems existing in the above-mentioned prior art, the applicant will provide a high-voltage test transformer for building electrical construction. Summary of the Invention

[0004] This invention provides a high-voltage test transformer for building electrical construction, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage test transformer for building electrical construction, comprising a test transformer body, wherein a plurality of terminals are arranged and installed on the top of the test transformer body, and a cross-shaped nut and a terminal assembly are provided on the top of the terminal. The cross-shaped nut is threadedly connected to the top of the terminal and can clamp and limit the terminal assembly that is engaged with the top of the terminal. A base installed on the top of the test transformer body is fitted on the outside of the terminal. A U-shaped frame plate is hinged inside the base through a pin. A top rod is fixed to the rear end of the U-shaped frame plate, and limit rods are fixed on both sides of the front end of the U-shaped frame plate. The top rod is simultaneously pressed by the cross-shaped nut during the spiral downward pressing of the terminal assembly, and drives the U-shaped frame plate and the limit rod to flip and move. After the cross-shaped nut spirals down to its maximum stroke, the terminal assembly is stably limited, and the limit rods block and limit the terminal assembly by being located on the outside of the terminal assembly engaged with the upper end structure of the terminal.

[0006] Preferably, one end of the pin passes through the corresponding side of the base and extends to the outside of the base, and one end of the pin is movably sleeved with a torsion spring and fixedly connected to a limiting plate. The two ends of the torsion spring are fixed to the surface of the base and the surface of the limiting plate, respectively. The limiting rod can be pulled away from the contact plate assembly by the elastic pull of the torsion spring in a non-compression state.

[0007] Preferably, the front end of the base is provided with a semi-open groove that can be engaged with the power connection post, and countersunk holes are provided on both sides of the base. Assembly screws that are threaded to the top structure of the test transformer body are fitted into the countersunk holes.

[0008] Preferably, the rear end of the U-shaped frame plate is provided with an arc surface structure, and an insulating damping buffer assembly is provided between the rear end structure of the U-shaped frame plate and the top of the rear end of the base. The insulating damping buffer assembly includes an insulating damping sheet and a transition pad, and the transition pad is located on top of the insulating damping sheet. Several curved spring sheets are arranged and installed between the middle of the transition pad and the top surface of the rear end of the base.

[0009] Preferably, both sides of the top of the test transformer body are fixed with transfer lifting rings, and the front and rear ends of the bottom of the test transformer body are equipped with roller components. The base, U-shaped frame plate, pin shaft, top rod and limit rod are all made of insulating material.

[0010] Preferably, both of the limiting rods have assembly holes inside, and one end of the assembly hole penetrates the corresponding front end structure of the U-shaped frame plate. The two assembly holes form an auxiliary installation space, and a first temperature measuring component or a second temperature measuring component is provided in the auxiliary installation space.

[0011] Preferably, the first temperature measuring component includes two first temperature-indicating patches, and a first screw that can pass through the corresponding assembly hole is fixed on the middle surface of the first temperature-indicating patch. A first nut fixed on the front surface of the U-shaped frame plate is threaded to one end of the first screw. Both the first screw and the first nut are made of insulating material.

[0012] Preferably, the temperature difference between the two first temperature-indicating patches is not less than ten degrees Celsius, and the structural surface of the first temperature-indicating patch away from the limiting rod is bonded to the end surface of the electrical contact assembly.

[0013] Preferably, the second temperature measuring component includes a wireless temperature sensor body, a temperature measuring end, and a second temperature indicator patch. The wireless temperature sensor body is electrically connected to the temperature measuring end via a wire, and an outer insulating shell connected to one side surface of the base is fitted on the outside of the wireless temperature sensor body. The temperature measuring end is fitted into the assembly hole of a limiting rod and is attached to the end surface of the contact plate assembly. The wireless temperature sensor body includes an insulating protective shell, and a controller, a wireless communication module, and a lithium battery module are installed inside the insulating protective shell.

[0014] Preferably, a second screw is fixed to the middle surface of the second temperature-indicating patch, passing through the internal assembly hole of another limiting rod, and a second nut is threadedly connected to one end of the second screw and fixed to the front end surface of the U-shaped frame plate. The surface of the second temperature-indicating patch is in contact with the end surface of the electrical contact assembly.

[0015] The present invention has the following beneficial effects: 1. This high-voltage test transformer for building electrical construction uses a mechanical anti-detachment mechanism consisting of a base, a U-shaped frame, a torsion spring, a top rod, and two limiting rods. During the subsequent clamping and limiting process of the connecting plate assembly mounted on the connecting post by the engagement of the cross-shaped nut and the connecting post, the U-shaped frame and the top rod are simultaneously pressed down by the cross-shaped nut, causing the two limiting rods to flip and move. After the cross-shaped nut locks and limits the connecting plate assembly, the two limiting rods, supported by the U-shaped frame, are positioned on both sides of the connecting plate assembly and the end of the connecting post assembly, directly blocking and limiting the connection. This improves the anti-detachment effect of the connecting plate assembly during use and enhances its pressure resistance in real-world environments.

[0016] 2. The high-voltage test transformer for building electrical construction uses a first temperature-indicating patch, a first screw, and a first nut to form a marked temperature detection component. The subsequent two marked temperature detection components, without interfering with the flipping and limiting of the U-shaped frame plate and the two limit rods, utilize the platform support conditions formed by the two limit rods and the U-shaped frame plate to directly contact and detect the temperature of the contact plate assembly in use. The first temperature-indicating patch changes color when it reaches the specified temperature and has no reversible condition, which can provide operators with the operating temperature of the contact plate assembly in a direct display manner, increasing the operator's control over the overall equipment.

[0017] 3. The high-voltage test transformer for building electrical construction uses the wireless temperature sensor body, temperature measuring end, second screw, second temperature indicator patch, and second nut in the second temperature measuring group as temperature detection conditions. It can also directly contact the contact plate assembly in use without delaying the flipping and limiting of the U-shaped frame plate and the two limit rods. It can also use the platform support conditions formed by the two limit rods and the U-shaped frame plate to perform temperature detection. It also has more auxiliary functions such as real-time temperature transmission and temperature comparison self-test, which can further improve the overall performance of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention; Figure 2 This is a front view schematic diagram of the structure of the present invention; Figure 3 This is a front view of the base in the structure of the present invention; Figure 4 This is a rear view of the base in the structure of the present invention; Figure 5 This is a top view of the U-shaped frame plate in the structure of the present invention; Figure 6 This is a front view schematic diagram of the first temperature-indicating patch in the structure of the present invention; Figure 7 This is a top view of the first temperature-indicating patch in the structure of the present invention; Figure 8 This is a front view schematic diagram of the main body of the wireless temperature sensor in the structure of the present invention; Figure 9 This is a rear view schematic diagram of the wireless temperature sensor body in the structure of the present invention; Figure 10 This is a partial cross-sectional schematic diagram of the main body of the wireless temperature sensor structure of the present invention.

[0019] In the diagram: 1. Test transformer body; 2. Connecting post; 3. Cross-shaped nut; 4. Connecting plate assembly; 5. Base; 6. U-shaped frame plate; 7. Torsion spring; 8. Top rod; 9. Limiting rod; 10. Insulating damping plate; 11. Transition pad; 12. Curved spring plate; 13. Transfer ring; 14. First temperature indicator patch; 15. First screw; 16. First nut; 17. Wireless temperature sensor body; 18. Temperature measuring end; 19. Second screw; 20. Second temperature indicator patch; 21. Second nut. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-5 A high-voltage test transformer for building electrical construction includes a test transformer body 1. Several terminals 2 are arranged on the top of the test transformer body 1, and each terminal 2 has a cross-shaped nut 3 and a terminal plate assembly 4 on its top. The cross-shaped nut 3 is threaded onto the top of the terminal 2 and can clamp and limit the terminal plate assembly 4 that is engaged with the top of the terminal 2. A base 5 is fitted onto the outside of the terminal 2 and installed on the top of the test transformer body 1. A U-shaped frame plate 6 is hinged inside the base 5 via a pin. A top rod 8 is fixed to the rear end of the U-shaped frame plate 6, and limit rods 9 are fixed to both sides of the front end of the U-shaped frame plate 6. The top rod 8 is simultaneously subjected to the pressure of the cross-shaped nut 3 during the spiral pressing of the cross-shaped nut 3 onto the terminal plate assembly 4. This causes the U-shaped frame plate 6 and the limiting rod 9 to flip and move aside. After the cross-shaped nut 3 spirals down to its maximum stroke, the contact plate assembly 4 is stably limited. At the same time, the limiting rod 9 blocks and limits the contact plate assembly 4 by being located on the outside of the upper end structure of the contact post 2. Both sides of the top of the test transformer body 1 are fixed with transfer lifting rings 13, and the front and rear ends of the bottom of the test transformer body 1 are equipped with roller components. This provides multiple movement conditions for the subsequent transfer of the entire device, further improving the flexibility of the overall equipment in the actual use environment. The base 5, U-shaped frame plate 6, pin shaft, top rod 8 and limiting rod 9 are all made of insulating materials to improve the safety of each component in the live environment.

[0022] In use, one end of the contact plate assembly 4 is snapped into the contact post 2 for positioning. Then, the cross nut 3 is screwed on so that the cross nut 3 moves down spirally under the engagement support of the contact post 2 until the bottom of the cross nut 3 contacts the top surface of one end of the contact plate assembly 4 and is pressed down for positioning. As the cross-shaped nut 3 spirals downward, the assembly formed by the U-shaped frame plate 6 and the top rod 8 will also be simultaneously subjected to the pressure transmission of the cross-shaped nut 3. Subsequently, as the cross-shaped nut 3 continues to move downward, the assembly formed by the U-shaped frame plate 6 and the top rod 8, supported by the pin shaft, will drive the two limiting rods 9 to rotate synchronously to make way. After the cross-shaped nut 3 reaches the electrode assembly 4 and is unable to rotate downward, the two limiting rods 9 will be located on both sides of the outer side of one end of the electrode assembly 4, providing shielding and limiting protection for one end of the electrode assembly 4. This reduces the probability of the electrode assembly 4 being pressed off and detached from the electrode post 2 during subsequent use, ensuring the overall equipment's efficient and continuous operation.

[0023] Please see Figures 1-5 One end of the pin passes through the corresponding side of the base 5 and extends to the outside of the base 5. One end of the pin is movably sleeved with a torsion spring 7 and fixedly connected to a limiting plate. The two ends of the torsion spring 7 are fixed to the surface of the base 5 and the surface of the limiting plate, respectively. The limiting rod 9 can be pulled away from the contact plate assembly 4 by the elastic pull of the torsion spring 7 in a non-pressurized state. This provides auxiliary power for the reset movement of the U-shaped frame plate 6 and related structures, further optimizing the use effect of the U-shaped frame plate 6 and related structures, and improving the flexibility of the overall device in the adjustment and use process.

[0024] In use, after use, turn the cross-shaped nut 3 so that the cross-shaped nut 3 moves upward and resets under the engagement support of the electrical contact post 2, thereby releasing the pressure limit of the electrical contact assembly 4. At the same time, the assembly formed by the U-shaped frame plate 6, the top rod 8 and the two limit rods 9, which have lost pressure, will move away from the end of the electrical contact assembly 4 under the reset force of the torsion spring 7, automatically giving way and releasing the obstruction limit of the electrical contact assembly 4. Then, the electrical contact assembly 4 can be removed from the electrical contact post 2.

[0025] Please see Figures 1-2 The base 5 has a semi-open groove at the front end that can be engaged with the power connection post 2, and countersunk holes are provided on both sides of the base 5. Assembly screws that are threaded to the top structure of the test transformer body 1 are fitted into the countersunk holes, thereby enabling the base 5 and the test transformer body 1 to be detachably installed and adjusted.

[0026] When in use, considering the modular replacement and maintenance needs of base 5 and related structures during subsequent use, the following operations can be performed; When the base 5 or the structure associated with the base 5 is damaged, the assembly screws between the base 5 and the test transformer body 1 can be loosened by using existing tools. After that, the semi-open slot inside the base 5 can be used as a clearance space to modularly separate the assembly formed by the base 5 or the structure associated with the base 5 from the power terminal 2.

[0027] Please see Figures 1-5 The rear end of the U-shaped frame plate 6 is provided with an arc surface structure, and an insulating damping buffer assembly is provided between the rear end structure of the U-shaped frame plate 6 and the top of the rear end of the base 5. The insulating damping buffer assembly includes an insulating damping sheet 10 and a transition pad 11, and the transition pad 11 is located on top of the insulating damping sheet 10. Several curved spring sheets 12 are arranged and installed between the middle of the transition pad 11 and the top surface of the rear end of the base 5.

[0028] In use, considering that one of the most common reasons for the loose locking of the cross-shaped nut 3 is the lack of actual vibration energy, a damping buffer condition that can be synchronously linked with the structure of the base 5 and the U-shaped frame plate 6 is set up without interfering with the shielding and limiting protection of the electrical plate assembly 4 of the base 5 and the U-shaped frame plate 6. The specific principle is as follows: After the U-shaped frame plate 6 is pressed and driven to the maximum flipping angle by the cross-shaped nut 3, the bottom surface of the rear end of the U-shaped frame plate 6 will simultaneously apply pressure to the transition pad 11 and the curved spring sheet 12, causing the curved spring sheet 12 to deform, while the bottom surface of the transition pad 11 will also come into contact with the top surface of the insulating damping sheet 10. When the cross-shaped nut 3, the electrical terminal 2 and other structures are subjected to vibration and impact during use, the curved spring plate 12 will pull the transition pad 11 and the insulating damping plate 10 to reciprocate and press into contact, thereby damping and buffering, reducing vibration energy, increasing the connection strength between the cross-shaped nut 3 and the electrical terminal 2, and reducing the probability of the cross-shaped nut 3 loosening.

[0029] Please see Figures 1-2 , Figures 6-7 Both limit rods 9 have assembly holes inside, and one end of the assembly hole passes through the corresponding front end structure of the U-shaped frame plate 6. The two assembly holes form an auxiliary installation space. A first temperature measuring component or a second temperature measuring component is set in the auxiliary installation space. Thus, when the electrical contact assembly 4 is used in conjunction with the electrical contact post 2 and the cross-shaped nut 3, the first temperature measuring component or the second temperature measuring component is set to synchronously detect the temperature of the electrical contact assembly 4 in the use state. The first temperature measuring component includes two first temperature-indicating patches 14, and a first screw 15 that can pass through the corresponding assembly hole is fixed on the middle surface of the first temperature-indicating patch 14. A first nut 16 fixed on the front surface of the U-shaped frame plate 6 is threaded to one end of the first screw 15. The first screw 15 and the first nut 16 are also made of insulating material to improve the safety of subsequent use. The temperature difference between the two first temperature-indicating patches 14 is not less than ten degrees Celsius, thereby expanding the temperature detection range of the contactor assembly 4 in use. The structural surface of the first temperature-indicating patch 14 away from the limit rod 9 is attached to the end surface of the contactor assembly 4 and the contactor post 2.

[0030] When in use, considering the need for further monitoring and protection of the connecting plate assembly 4 and the platform support conditions formed by the U-shaped frame plate 6 and the two limit rods 9, the two first temperature indicator patches 14 are used as the temperature detection conditions. Subsequently, when the temperature of the connecting plate assembly 4 under use exceeds the preset temperature, the two first temperature indicator patches 14 will change color in turn, and the color change is irreversible. Therefore, the operator can directly record whether the connecting plate assembly 4 has experienced a temperature rise by observing the color change of the two first temperature indicator patches 14, and use it as a judgment of the approximate temperature range. The first temperature indicator patch 14 at the lower temperature changes color, while the first temperature indicator patch 14 at the higher temperature does not change color, which can provide the operator with the approximate range of temperature change of the connecting plate assembly 4. It is suitable for simple construction sites. During the continued use of the overall device, the two first temperature-indicating patches 14 after use can be replaced or removed by disassembling the first screw 15 and the first nut 16. Then, the new first temperature-indicating patch 14 and the first screw 15 can be reassembled with the first nut 16.

[0031] Please see Figures 1-2 , Figures 8-10 The second temperature measuring component includes a wireless temperature sensor body 17, a temperature measuring end 18, and a second temperature indicator patch 20. The wireless temperature sensor body 17 is electrically connected to the temperature measuring end 18 via a wire, and the outer side of the wireless temperature sensor body 17 is fitted with an outer insulating shell that is connected to one side surface of the base 5. This further enhances the safety of the wireless temperature sensor body 17 during use, while also enabling the wireless temperature sensor body 17 to be installed or replaced as an integrated unit with the base 5. The temperature measuring end 18 is fitted into the assembly hole of a limiting rod 9 and is attached to the end surface that is snapped into the contact plate assembly 4 and the contact post 2. The wireless temperature sensor body 17 includes an insulating protective shell, and a controller, a wireless communication module, and a lithium battery module are installed inside the insulating protective shell. The middle surface of the second temperature-indicating patch 20 is fixed with a second screw 19 that passes through the internal assembly hole of another limiting rod 9, and one end of the second screw 19 is threadedly connected to a second nut 21 fixed on the front end surface of the U-shaped frame plate 6. The surface of the second temperature-indicating patch 20 is in contact with the end surface of the electrical contact assembly 4 and the electrical contact post 2.

[0032] In use, considering special circumstances where continuous temperature monitoring of the contact assembly 4 is required during use, the wireless temperature sensor body 17 and temperature measuring head 18 are used as real-time detection conditions. From the start of use of the contact assembly 4 until it generates heat, the temperature measuring head 18 directly contacts the contact assembly 4 and transmits the temperature data wirelessly to the corresponding backend device in real time via the wireless temperature sensor body 17. At the same time, the second temperature-indicating patch 20 serves as a reference condition for temperature feedback. That is, the second temperature-indicating patch 20 is used as a clear temperature data reference. When the second temperature-indicating patch 20 changes color, it indicates that the contact assembly 4 in use has reached the temperature range corresponding to the second temperature-indicating patch 20. Meanwhile, the real-time temperature data output by the wireless temperature sensor body 17 is observed. If it matches, it indicates that the wireless temperature sensor body 17 and temperature measuring head 18 are working normally. If it does not match, it indicates that there is a fault in the use of the wireless temperature sensor body 17 and temperature measuring head 18, which needs to be replaced or repaired in time.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage test transformer for building electrical construction, comprising a test transformer body (1), wherein a plurality of terminals (2) are arranged on the top of the test transformer body (1), and a cross-shaped nut (3) and a terminal assembly (4) are provided on the top of the terminals (2), wherein the cross-shaped nut (3) is threadedly connected to the top of the terminals (2) and can clamp and limit the terminal assembly (4) that is engaged with the top of the terminals (2), characterized in that: The outer side of the power connection post (2) is fitted with a base (5) installed on the top of the test transformer body (1), and a U-shaped frame plate (6) is installed inside the base (5) by a pin hinge. A top rod (8) is fixed at the rear end of the U-shaped frame plate (6), and limit rods (9) are fixed on both sides of the front end of the U-shaped frame plate (6). The top rod (8) is simultaneously pressed by the cross-shaped nut (3) during the spiral pressing of the connecting plate assembly (4) and drives the U-shaped frame plate (6) and the limit rod (9) to flip and make room. After the cross-shaped nut (3) spirals down to the maximum stroke, the connecting plate assembly (4) is stably limited. At the same time, the limit rod (9) blocks and limits the connecting plate assembly (4) by being located on the outer side of the upper end structure of the power connection post (2).

2. The high-voltage test transformer for building electrical construction according to claim 1, characterized in that: One end of the pin passes through the corresponding side of the base (5) and extends to the outside of the base (5). One end of the pin is movably sleeved with a torsion spring (7) and fixedly connected with a limiting plate. The two ends of the torsion spring (7) are fixed on the surface of the base (5) and the surface of the limiting plate, respectively. The limiting rod (9) can be pulled away from the contact plate assembly (4) by the elastic pull of the torsion spring (7) in a non-pressurized state.

3. The high-voltage test transformer for building electrical construction according to claim 1, characterized in that: The front end of the base (5) is provided with a semi-open groove that can be engaged with the power connection post (2), and countersunk holes are provided on both sides of the base (5). Assembly screws that are threaded to the top structure of the test transformer body (1) are fitted into the countersunk holes.

4. A high-voltage test transformer for building electrical construction according to claim 1, characterized in that: The rear end of the U-shaped frame plate (6) is provided with an arc surface structure, and an insulating damping buffer assembly is provided between the rear end structure of the U-shaped frame plate (6) and the top of the rear end of the base (5). The insulating damping buffer assembly includes an insulating damping sheet (10) and a transition pad (11). The transition pad (11) is located on top of the insulating damping sheet (10). Several curved spring sheets (12) are arranged and installed between the middle of the transition pad (11) and the top surface of the rear end of the base (5).

5. A high-voltage test transformer for building electrical construction according to claim 1, characterized in that: The test transformer body (1) has two fixed transfer rings (13) on both sides of the top, and roller components are installed at the front and rear ends of the bottom of the test transformer body (1). The base (5), U-shaped frame plate (6), pin shaft, top rod (8) and limit rod (9) are all made of insulating material.

6. A high-voltage test transformer for building electrical construction according to claim 1, characterized in that: Both of the limiting rods (9) have assembly holes inside, and one end of the assembly hole passes through the corresponding front end structure of the U-shaped frame plate (6). The two assembly holes form an auxiliary installation space, and a first temperature measuring component or a second temperature measuring component is provided in the auxiliary installation space.

7. A high-voltage test transformer for building electrical construction according to claim 6, characterized in that: The first temperature measuring component includes two first temperature-indicating patches (14), and a first screw (15) that can pass through the corresponding assembly hole is fixed on the middle surface of the first temperature-indicating patch (14). A first nut (16) fixed on the front surface of the U-shaped frame plate (6) is threaded to one end of the first screw (15). The first screw (15) and the first nut (16) are both made of insulating material.

8. A high-voltage test transformer for building electrical construction according to claim 7, characterized in that: The temperature difference between the two first temperature-indicating patches (14) is not less than ten degrees Celsius, and the structural surface of the first temperature-indicating patch (14) away from the limiting rod (9) is bonded to the end surface of the electrical contact assembly (4).

9. A high-voltage test transformer for building electrical construction according to claim 6, characterized in that: The second temperature measuring component includes a wireless temperature sensor body (17), a temperature measuring end (18), and a second temperature indication patch (20). The wireless temperature sensor body (17) is electrically connected to the temperature measuring end (18) via a wire, and an outer insulating shell connected to one side surface of the base (5) is fitted on the outside of the wireless temperature sensor body (17). The temperature measuring end (18) is fitted in the assembly hole of a limiting rod (9) and is attached to the end surface of the contact plate assembly (4). The wireless temperature sensor body (17) includes an insulating protective shell, and a controller, a wireless communication module, and a lithium battery module are fitted inside the insulating protective shell.

10. A high-voltage test transformer for building electrical construction according to claim 9, characterized in that: The middle surface of the second temperature-indicating patch (20) is fixed with a second screw (19) that passes through the internal assembly hole of another limiting rod (9), and the surface of one end of the second screw (19) is threadedly connected with a second nut (21) fixed on the front end surface of the U-shaped frame plate (6). The surface of the second temperature-indicating patch (20) is in contact with the end surface of the electrical contact assembly (4).

Images