A portable intelligent detector for power loop inspection of a transformer area

Abstract

The application discloses a kind of portable intelligent detector of inspection of power circuit in transformer area, it is related to the technical field of power circuit detection equipment in transformer area, including: detector, further include: first component;First component includes electric control telescopic rod, fixedly connected with base on the telescopic end of electric control telescopic rod, base is equipped with sliding groove, sliding groove is slidably connected with buckling piece, the design of the support positioning structure of the multi-joint segment of first component can effectively replace traditional manual operation, effectively avoid the detection probe deviation problem caused by manual hand shaking, and each joint segment, i.e. after the rigid locking of electric control telescopic rod, there is no shaking displacement, ensure that the probe is always accurately aligned with target line and detection position, guarantee the accuracy and reliability of current, leakage current, insulating property and other detection data, avoid hidden danger caused by detection deviation from the root, provide data support for fine inspection of transformer area line loss management, electricity stealing investigation, three-phase imbalance monitoring etc.

Description

Technical Field

[0001] This invention relates to the technical field of electrical circuit testing equipment for transformer substations, specifically a portable intelligent testing instrument for inspecting electrical circuits in transformer substations. Background Technology

[0002] A distribution area is the core basic unit of low-voltage power supply in a power distribution network. It specifically refers to a distribution transformer and all the low-voltage power supply range, power supply equipment, and electricity users it covers. It is the terminal power supply unit that directly connects to various electricity users such as residents, shops, and micro-enterprises after the high-voltage power grid is converted to low voltage. In order to ensure the stable operation of the distribution area power supply system and the safety of electricity use, and to promptly investigate various problems such as abnormal current, leakage hazards, insulation damage, and overheating in the power circuits, power workers need to regularly conduct comprehensive inspections of the power circuits in the distribution area using specialized testing instruments.

[0003] Currently, the types of equipment used for power circuit inspection in transformer substations are relatively fixed. The mainstream inspection equipment includes intelligent clamp-on ammeters, transformer substation circuit insulation testers, and infrared thermal imaging inspection instruments. In actual inspection operations, all of the above-mentioned inspection equipment must be accurately aligned with the target line and the specific location to be inspected in order to ensure that the collected test data is effective and reliable. However, the current technology for operating such inspection equipment usually involves manual hand-held operation of the testing equipment terminal. The manual hand-held method has inherent instability issues, and it is very easy for the testing probe to deviate from the target position due to hand tremors, which directly affects the accuracy of the test data and may even lead to misjudgment or omission of potential hazards. Meanwhile, transformer substation inspections often involve confined spaces with poor visibility, such as distribution boxes and meter boxes. Manually handheld equipment in these spaces is difficult to adjust its orientation, leading to inconvenience, increased inspection time, and reduced overall efficiency. This makes it difficult to meet the practical needs of refined inspections and efficient fault diagnosis of transformer substation circuits, and also fails to adapt to diverse inspection tasks such as line loss management, electricity theft investigation, and three-phase imbalance monitoring. Therefore, there is an urgent need to develop an inspection equipment structure that is suitable for operation in confined spaces and improves detection stability, effectively addressing many pain points in existing transformer substation circuit inspections.

[0004] Therefore, this invention proposes a portable intelligent testing instrument for inspecting power circuits in transformer substations to solve the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a portable intelligent testing instrument for inspecting power circuits in transformer substations, thereby solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable intelligent detector for inspecting power circuits in transformer substations, comprising: a detector, and further comprising: a first component; The first component includes an electrically controlled telescopic rod, a base is fixedly connected to the telescopic end of the electrically controlled telescopic rod, a sliding groove is provided on the base, a fastening element is slidably connected in the sliding groove, a magnet is fixedly connected to the flat wall of the fastening element, a ball joint is ball-jointed between the two fastening elements, and a silicone granule is fixedly connected to the bottom of the ball joint. The base has a vertical groove, an air injection valve pipe is fixedly connected to the base, and an air vent plug is provided on the base; A spring A is fixedly connected inside the vertical groove. A pressing component is fixedly connected to the top of the spring A. A recessed cavity is opened on the pressing component, and a silicone strip is fixedly connected inside the recessed cavity. The first component may be configured in multiple groups depending on the situation.

[0007] Preferably, a second component is also included; The second component includes a bolt post fixedly connected to the top of the ball joint, a bolt sleeve threaded onto the bolt post, and a support shell fixedly connected to the top of the bolt sleeve; The inner cavity of the support shell is provided with a sliding groove, and a sliding column is slidably connected in the sliding groove.

[0008] Preferably, a displacement element is fixedly connected to the top of the sliding column, and the displacement element is adapted to slide within the inner cavity of the support shell. Springs B are fixedly connected to both sides of the displacement member. The end of spring B away from the displacement member is fixedly connected to the inner wall of the support shell. A fine-tuning rod is threadedly connected to the support shell, and a pushing block is fixedly connected to the end of the fine-tuning rod.

[0009] As a preferred option, a third component is also included; The third component includes a magnetic base at the bottom of the electrically controlled telescopic rod at the lowest end. The magnetic base is fixedly connected to the electrically controlled telescopic rod. A through hole is provided on the magnetic base. A magnetic sheet is provided in the inner cavity of the magnetic base. A baffle plate is movably inserted into the magnetic base.

[0010] Preferably, a rope is threaded through the through hole, and a recessed annular groove is formed on the outer ring wall of the electrically controlled telescopic rod.

[0011] Preferably, the fastening components are arranged in pairs and magnetically attracted to each other to form a ball joint enclosure and limiting cavity; and after the two are fastened together, the notch at the top can form a limiting groove.

[0012] Preferably, the displacement element comes in two forms: a U-shape and a flat sheet.

[0013] Preferably, the support shell, sliding groove, sliding column, displacement component, spring B, fine-tuning rod, and pushing block form a fine-tuning group, and two groups are provided in total.

[0014] Preferably, the bottom surface of the displacement member is in contact with the upper surface of the pushing block; the pushing block is set with an inclined surface of less than 90 degrees.

[0015] Compared with the prior art, the present invention provides a portable intelligent testing instrument for inspecting power circuits in transformer substations, which has the following advantages: 1. The design of the first component in this invention provides the following advantages: Effectively solves the stability issues of manual handheld testing and ensures testing accuracy: By replacing traditional manual handheld operation with multi-joint segment support positioning, it effectively avoids the problem of probe deviation caused by hand tremors. Moreover, each joint segment, i.e., the electrically controlled telescopic rod, is rigidly locked without shaking or displacement, ensuring that the probe is always accurately aligned with the target line and testing position. This ensures the accuracy and reliability of test data such as current, leakage current, and insulation, and fundamentally avoids misjudgment and missed judgment of hidden dangers caused by testing deviations. It provides data support for refined inspections such as transformer area line loss management, electricity theft investigation, and three-phase imbalance monitoring. Adaptable to narrow and complex working spaces, solving the problem of inconvenient operation: The component is composed of multiple telescopic and adjustable joint segments, which can flexibly adjust the overall length and the angle between each segment. It can easily avoid crowded internal devices such as distribution boxes and meter boxes. Even in narrow spaces with poor visibility, the probe can be smoothly reached to the target detection position by adapting the joint angle and telescopic amount. There is no need to repeatedly adjust the working posture, which effectively solves the drawback of manual handheld equipment being difficult to operate flexibly in narrow spaces and reduces the difficulty of inspection operations. Enhance the flexibility of inspection operations and adapt to diverse inspection scenarios: Each joint segment can be independently adjusted in angle and freely extended and retracted, which can be adapted to the detection of meters and branch lines at close range, as well as the detection of main lines and lines in concealed locations at long distances. At the same time, it can be adapted to the power circuits of transformer substations with different heights and different layouts. Without changing additional auxiliary tools, it can cover the inspection needs of the entire transformer substation area and adapt to diverse operation scenarios such as routine inspections, fault diagnosis, and special inspections. It has extremely strong adaptability. Rigid locking ensures continuous and stable testing and improves operational reliability: The joint segments have a rigid locking function, which locks firmly after being adjusted to the target posture and can maintain the supported positioning state for a long time. This meets the needs of continuous testing at the same position and comparison and collection of multiple sets of data, avoids repeated testing caused by equipment displacement during the inspection process, and improves the overall reliability of equipment inspection.

[0016] 2. The present invention, through the design of gas-locking adjacent electrically controlled telescopic rods (joint segments) within the first component, offers the following advantages: To avoid the damage to the lifespan of the locking structure caused by temperature, and to adapt to the temperature measurement scenarios of transformer substations: Unlike traditional mechanical hydraulic locking structures, which are prone to lifespan damage such as aging of seals, deterioration of hydraulic oil, and reduction of locking accuracy in the heat environment of transformer substations, this design adopts a gas locking method with vertical slot air injection. There are no hydraulic seals, hydraulic oil or other components that are easily affected by temperature. Even if the operation is carried out for a long time in the heat environment of transformer substations, the locking structure will not suffer from wear and tear or aging, which will greatly extend the service life of the first component joint segment and adapt to the continuous inspection needs under high temperature conditions such as abnormal line loss and overload in transformer substations. The locked state is unaffected by line temperature, ensuring positioning stability under complex working conditions: The core locking force of the gas locking method comes from gas pressure, without relying on rigid transmission of mechanical contact clamping. It will not cause thermal expansion and contraction of locking components or increase in gap due to temperature conduction from the line. Regardless of whether the transformer area line is in a normal temperature, low temperature or overloaded high temperature state, it can maintain a stable locking force, ensuring that there is no loosening or displacement of adjacent electronically controlled telescopic rods and ball joints, providing continuous and reliable support for accurate probe positioning, and avoiding detection deviations caused by temperature fluctuations; By leveraging the temperature of the line to enhance thermal expansion, the locking effect increases inversely with rising temperature: Gas has the property of thermal expansion and contraction. This design is cleverly adapted to the inspection scenario of the transformer area. With the support of the temperature emitted by the line, the gas in the vertical slot expands due to heat, which can further increase the gas pressure in the slot, thereby enhancing the locking tightness of the ball joint and joint segment, achieving a positive gain effect of "the higher the temperature, the stronger the locking". It is especially suitable for inspection of abnormal operating conditions such as transformer area overload heating and three-phase unbalanced heating. Even if the temperature at the detection location is high, it can ensure that the support positioning is not loose, eliminating the risk of equipment displacement in high temperature environments. Lightweight design adapts to portable inspection needs: The gas-locked structure eliminates the need for hydraulic pumps, hydraulic hoses, and complex mechanical locking components. The overall structure is simple and lightweight, without adding extra weight to the first component. Combined with the telescopic design of the electrically controlled telescopic rod, the retracted size is compact, making it convenient for power workers to carry outdoors. This meets the core design requirements of portable detectors and avoids the impact of bulky locking structures on equipment portability.

[0017] 3. The design of the second component in this invention provides the following advantages: Precisely corrects positioning deviations and maximizes the accuracy of detection values: Based on the overall support and positioning of the first component, the fine-tuning function of the detection alignment orientation can precisely correct any small angular deviations that may exist after the first component is positioned. This ensures that the detection probe is in the optimal alignment posture with the target line and detection position (such as the clamp probe precisely fitting the wire and the infrared probe perpendicularly aligning with the heat point). This effectively avoids detection signal attenuation and numerical deviation caused by orientation deviation, ensuring the ultimate accuracy of core detection data such as current, leakage current, and insulation resistance. It provides highly reliable data support for refined inspection work such as transformer area line loss calculation, fault diagnosis, and electricity theft investigation. Adapted to precise operation in narrow spaces, reducing the difficulty of accurate alignment: For narrow spaces with poor visibility, such as distribution boxes and meter boxes, after the first component completes the general posture positioning, there is no need to readjust the overall support structure. The detection orientation can be adjusted by the fine-tuning function of the second component. There is no need for operators to repeatedly try and adjust their working posture, or even to directly observe the position of the probe to complete accurate alignment. This effectively solves the drawback of cumbersome operation of accurate alignment in narrow spaces and greatly reduces the difficulty of inspection operations. Shorten positioning and calibration time and improve overall inspection efficiency: After the first component achieves rapid coarse positioning, the second component can quickly complete precise orientation fine adjustment. Compared with the traditional manual hand-held repeated calibration or readjustment of the overall posture of the first component, the time taken for the probe to go from positioning to precise alignment is greatly shortened. Especially in multi-node and multi-line continuous inspection scenarios, it can significantly reduce invalid operation time, improve the inspection efficiency of a single area, and adapt to the needs of large-scale area inspection operations. Protect testing equipment and power lines, and improve operational safety: The fine adjustment characteristics of the fine-tuning component can avoid collisions and friction between the testing probe and the precision components and lines in the distribution box caused by forcibly adjusting the overall posture of the first component. At the same time, it can prevent damage to the insulation layer of the line caused by forced testing when the probe is misaligned. It complies with the safety regulations for power operations and reduces equipment wear and line safety hazards. Strengthening component collaboration and adaptation to improve overall equipment reliability: The second component, as a supplement and optimization of the positioning function of the first component, forms a collaborative mode of "coarse positioning + fine adjustment". This makes up for the shortcomings of a single positioning component in achieving extremely accurate alignment, making the positioning-alignment process of the detector smoother and more stable in complex inspection environments, and improving the overall operational reliability and environmental adaptability of the equipment.

[0018] 4. The present invention, by employing a push block design with an inclined surface of less than ninety degrees, offers the following advantages: By utilizing the principle of inclined plane transmission, the fine-tuning accuracy is amplified to achieve extremely fine adjustment: the inclined plane design of the push block with an angle of less than 90 degrees can accurately reduce the linear movement distance of the fine-tuning rod through inclined plane transmission, and convert the large linear displacement of the fine-tuning rod into a small-amplitude precise deflection of the probe orientation, forming an amplified accuracy effect of "small linear displacement → micro-angle deflection". Compared with the equidistant transmission of vertical plane push, the fine-tuning resolution is greatly improved, and it can truly achieve micron-level / small angle fine adjustment of the detection orientation, meeting the stringent requirements of the power circuit of the transformer area for detection alignment accuracy. To avoid over-adjustment during manual turning and ensure accurate fine-tuning in one go: When manually turning the fine-tuning lever, excessive linear movement can easily occur due to deviations in hand strength control. However, an angle of less than 90 degrees can shorten the effective travel of the fine-tuning lever. When turning the same angle, the linear movement distance of the fine-tuning lever is shorter, and the adjustment range of the probe orientation is easier to control. This effectively avoids the problems of over-adjustment and repeated corrections, ensuring accurate fine-tuning in one go and improving the effectiveness of fine-tuning operations. Strengthening the fine-tuning value of the second component to compensate for the shortcomings in coarse positioning accuracy: After the first component achieves overall coarse positioning, the core value of the second component lies in accurately correcting minute deviations. The inclined surface design of the push block further amplifies the fine-tuning accuracy, which can correct the slight orientation deviation after coarse positioning, allowing the detection probe to achieve optimal fit / alignment with the target line and detection point, completely eliminating the fluctuation of detection values ​​caused by slight orientation deviations, and providing extremely accurate data support for refined inspections such as transformer area line loss calculation, leakage current investigation, and three-phase imbalance monitoring.

[0019] 5. The addition of a rope strap within the third component of this invention provides the following advantages: The system allows for the bundling and storage of disassembled joint segments, significantly reducing the storage space required. The ropes can be precisely used with the recessed grooves on the electrically controlled telescopic rods and joint segments. When the equipment is not in operation and needs to be stored, the disassembled joint segments and electrically controlled telescopic rods can be bundled and fixed along the recessed grooves using the ropes. This effectively prevents the parts from being scattered and ensures that the parts fit together tightly, greatly reducing the overall storage volume. This solves the problem of large storage space for multi-joint and multi-telescopic rod structures, making it easier to organize the equipment before storage and carrying, and improving storage convenience. Provides convenient carrying function, significantly improving the portability and transferability of equipment: The rope can be directly held and carried by the staff, without the need for additional special handles or storage bags. The operators can easily move the equipment by carrying the rope, which is suitable for complex scenarios such as outdoor area inspection, moving up and down the corridors of old residential buildings, and walking inspection on rural roads. It avoids the problem of laborious handling caused by the lack of convenient carrying structure of equipment, reduces the labor intensity during equipment transfer, and improves the mobility of inspection operations. The auxiliary magnetic base greatly expands the device's adaptability and fixation scenarios: The rope can be used with the magnetic base equipped with an electrically controlled telescopic rod for auxiliary fixation. This not only enhances the adhesion and firmness between the magnetic base and the fixing surface, preventing the magnetic base from falling off due to vibration or external impact, but also allows for binding with more non-magnetic fixing carriers. This breaks the limitation that the magnetic base can only attract ferrous components, allowing the device to be fixed on various carriers such as distribution box frames, meter box brackets, and line poles, greatly expanding the overall device's applicable fixing scenarios and adapting to diverse inspection operation environments in different transformer substations. Multi-functional design enhances the practicality of components without the need for additional accessories: The rope and strap serve three core functions: bundling and storage, convenient carrying, and auxiliary fixation. There is no need to add additional accessories such as straps, handles, and fixing straps for storage, carrying, and auxiliary fixation, simplifying the overall device structure, reducing the number of parts, reducing the overall weight and production cost of the equipment, and avoiding the problems of easy loss and difficulty in management of multiple accessories. This achieves a highly efficient "one-item-multi-functional" design and enhances the practicality of the third component and the overall device. Attached Figure Description

[0020] Figure 1 This is a diagram showing the overall structure of the detector of the present invention after adjustment during the detection process. Figure 2 This is a schematic diagram showing the overall structure of the detector in this invention after installation before testing; Figure 3 This is a disassembled view of the main structure of the present invention; Figure 4 This is an assembly diagram of the fasteners and ball joints in this invention; Figure 5 This is a plan view of the working state of the first component of the electrically controlled telescopic rod and sliding groove after half-section in this invention; Figure 6 This is a three-dimensional schematic diagram of the working state of the first component of the electrically controlled telescopic rod and the sliding groove after half-section in this invention. Figure 7 This is an assembly diagram of the ball joint in this invention, which is supported by bolt columns and bolt sleeves, and the testing instrument connected to them. Figure 8 This is a three-dimensional structural diagram of the longitudinal fine-tuning of the displacement component in this invention; Figure 9 This is a top view of the longitudinal fine-tuning of the displacement component in this invention; Figure 10 This is an exploded view of the second component in this invention; Figure 11 This is a three-dimensional structural diagram of the magnetic base after being cut apart in this invention; Figure 12 This is a planar schematic diagram of the magnetic base after it has been cut in this invention.

[0021] In the picture: 1. Detector; First Component: 201, Electrically Controlled Telescopic Rod; 202, Base; 203, Sliding Groove; 204, Fastener; 205, Magnet; 206, Ball Joint; 207, Silicone Granules; 208, Vertical Groove; 209, Air Injection Valve Pipe; 210, Air Release Plug; 211, Spring A; 212, Extrusion Part; 213, Silicone Strip; Second component: 301, bolt post; 302, bolt sleeve; 303, support shell; 304, sliding groove; 305, sliding post; 306, displacement component; 307, spring B; 308, fine-tuning rod; 309, pushing block; Third component: 401, magnetic base; 402, through hole; 403, magnetic sheet; 404, barrier plate; 405, rope; 406, recessed annular groove. Detailed Implementation

[0022] 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.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Example Please refer to Figures 1 to 6 As shown: This application provides a portable intelligent detector for inspecting power circuits in transformer substations, including: a detector 1, and also including: a first component; The first component includes an electrically controlled telescopic rod 201. A base 202 is fixedly connected to the telescopic end of the electrically controlled telescopic rod 201. A sliding groove 203 is provided on the base 202. A fastening element 204 is slidably connected in the sliding groove 203. A magnet 205 is fixedly connected to the flat wall of the fastening element 204. A ball joint 206 is ball-jointed between the two fastening elements 204. A silicone pellet 207 is fixedly connected to the bottom of the ball joint 206. A vertical groove 208 is provided on the base 202. An air injection valve pipe 209 is fixedly connected to the base 202. An air vent plug 210 is provided on the base 202. A spring A211 is fixedly connected in the vertical groove 208. A pressing element 212 is fixedly connected to the top of the spring A211. A recessed cavity is provided on the pressing element 212. A silicone strip 213 is fixedly connected in the recessed cavity. Multiple sets of the first component are provided as needed.

[0025] in: The detector 1 is an intelligent device used to detect the theoretical and actual line loss rates of the transformer substation in real time based on the total power supply and the power consumption of each branch / user, as well as to investigate line faults in distribution boxes, meter boxes and other components within the transformer substation.

[0026] The first component can provide highly flexible support and positioning for the detector 1, in order to address the instability of manual operation of the detector 1 during the inspection of the power circuit in the transformer substation, as well as the disadvantages of operation in congested, narrow spaces with poor visibility.

[0027] The first component can be configured with multiple sets to form multiple retractable rigid locking joint segments, which can be adjusted by changing the angle of each joint segment to adapt to different testing environments; see attached diagram. Figure 2 .

[0028] A laser pointer can be externally mounted on the electrically controlled telescopic rod 201 closest to the detection circuit, which facilitates the detection and positioning of the detector 1. That is, after locking the general position, the presence of the laser pointer can effectively assist the detector 1 with probes to make fine adjustments to the angle, ensuring accurate alignment with the target wire; it can also assist the detection equipment with clamps to ensure accurate clamping of the target wire.

[0029] Two fasteners 204 are grouped together and can be magnetically attracted to each other by magnets 205 to form a wrapping and limiting effect on the ball joint 206; and after the two are fastened together, the notch at the top can form a limiting groove, which can limit the rotation direction of the ball joint 206; in specific use, fasteners 204 with different bending directions can be selected according to the detection circuit.

[0030] The silicone granules 207 are used in conjunction with the extruder 212. After the operator has adjusted the angle and orientation of the electrically controlled telescopic rod 201 (i.e., a set of joint segments) with ball joint 206, the extruder 212 with silicone strip 213 will move upward in the vertical groove 208 with the assistance of the gas injected into the vertical groove 208, and eventually cause the silicone strip 213 to come into contact with the silicone granules 207. During the mutual contact and extrusion between the silicone strip 213 and the silicone granules 207, the ball joint 206 can no longer move.

[0031] The gas injection valve pipe 209 can be connected to a portable gas pressurization tank, so that gas can be injected into the vertical groove 208 through the gas injection valve pipe 209 during the testing work; after the testing work is completed, the gas originally injected into the vertical groove 208 can be released by removing the vent plug 210, restoring the flexible movement of the ball joint 206.

[0032] The gas locking method, which indirectly locks the ball joint 206 by injecting air into the vertical groove 208, is different from the mechanical hydraulic locking method, which suffers life damage due to line temperature. The gas locking method is not affected by line temperature, and even the heat dissipated by the line will expand and improve the fixing effect.

[0033] When the vertical groove 208 is not inflated, i.e., in the initial state, the spring A211 is in a normal relaxed state, and the top extruder 212 is not in contact with the silicone strip 213 and the silicone granules 207 at the bottom of the ball joint 206. When the test begins, the spring A211 will be forced to stretch after the gas enters the vertical groove 208. After the test is completed, the spring A211 will return to the initial state with the extruder 212 when the gas is released from the vertical groove 208.

[0034] A further embodiment: Please refer to Figures 7 to 10 As shown: The second component includes a bolt post 301 fixedly connected to the top of the ball joint 206, a bolt sleeve 302 threadedly connected to the bolt post 301, and a support shell 303 fixedly connected to the top of the bolt sleeve 302; a sliding groove 304 is provided in the inner cavity of the support shell 303, a sliding post 305 is slidably connected in the sliding groove 304, a displacement member 306 is fixedly connected to the top of the sliding post 305, and the displacement member 306 is adapted to slide in the inner cavity of the support shell 303; springs B307 are fixedly connected to both sides of the displacement member 306, and the end of the spring B307 away from the displacement member 306 is fixedly connected to the inner wall of the support shell 303; a fine-tuning rod 308 is threadedly connected to the support shell 303, and a pushing block 309 is fixedly connected to the end of the fine-tuning rod 308.

[0035] in: The second component is used to fine-tune the detection alignment of the detector 1, thereby improving the accuracy of the final values ​​of the power circuit inspection in the transformer area; this is different from the detection instability that exists when the detector 1 is manually held.

[0036] When testing the circuits in the testing area, the corresponding testing instrument can be selected according to the different tests being conducted; the spiral installation method using bolt posts 301 and bolt sleeves 302 can effectively improve convenience.

[0037] The sliding column 305 is slidably fitted into the sliding groove 304.

[0038] The displacement component 306 comes in two forms: one is U-shaped, used to support and fix another support shell 303; the other is flat, on which the detector 1 is fixedly connected.

[0039] Spring B307 is used for the reset of displacement component 306.

[0040] The support shell 303, sliding groove 304, sliding column 305, displacement component 306, spring B307, fine-tuning rod 308, and pushing block 309 form a group. This design contains two fine-tuning groups: one for longitudinal adjustment during fine-tuning of the detector 1, and one for lateral adjustment during fine-tuning of the detector 1. The aforementioned longitudinal and lateral adjustments are... Figure 9 The overhead view shown is the reference point; Appendix Figure 9 The passive movement of the middle sliding column 305 is the longitudinal adjustment.

[0041] It should be noted that a fine-tuning group contains two fine-tuning rods 308 and a push block 309. When the operator rotates one of the fine-tuning rods 308 to move the push block 309 to push the sliding column 305, the other push block 309 can be adjusted in the opposite direction away from the sliding column 305 before this action, depending on the specific situation. This operation can effectively avoid the obstruction that may occur during fine-tuning.

[0042] The pushing block 309, whose upper surface is in contact with the bottom surface of the displacement component 306, can provide support for the displacement component 306.

[0043] The push block 309 is designed with an angle of less than 90 degrees, which can appropriately shorten the linear movement distance of the fine adjustment rod 308 when it is manually turned to rotate, thereby achieving more precise fine adjustment.

[0044] A further embodiment: Please refer to Figures 1 to 3 , Figure 11 , Figure 12 As shown: The third component includes a magnetic base 401 at the bottom of the electrically controlled telescopic rod 201, which is fixedly connected to the electrically controlled telescopic rod 201. A through hole 402 is provided on the magnetic base 401, a magnetic sheet 403 is provided in the inner cavity of the magnetic base 401, a baffle plate 404 is movably inserted into the magnetic base 401, a rope 405 is threaded through the through hole 402, and a recessed annular groove 406 is provided on the outer ring wall of the electrically controlled telescopic rod 201.

[0045] in: The third component is used to fix the first and second components, thereby improving the overall stability of the device for detecting the line in the transformer area.

[0046] The magnetic base 401 can magnetically attach the entire device to a metal surface such as an electric meter box, so as to facilitate the joint segments and support of the tester 1 during subsequent circuit testing; at the same time, the through hole 402 on the magnetic base 401 can be used with the rope 405, which can be tied to other adjacent objects to improve the overall stability.

[0047] The magnetic sheet 403 and the barrier plate 404 also have holes similar to those in the through hole 402.

[0048] When the magnetic sheet 403 needs to be magnetically attracted to the metal surface, the barrier plate 404 needs to be removed from the magnetic base 401 to ensure the magnetic attraction force of the magnetic sheet 403. When the entire device needs to be removed from the fixed surface, the barrier plate 404 can be reinserted into the magnetic base 401 through the slot on the magnetic base 401 to reduce the magnetic attraction force of the magnetic sheet 403 on the metal surface and facilitate disassembly.

[0049] The rope 405, in conjunction with the electrically controlled telescopic rod 201 and the recessed annular groove 406 on the joint segment, can be used to bundle and store the joint segment after disassembly, reducing the space occupied. At the same time, the rope 405 can be carried by staff, improving the overall portability and adaptability to complex inspection scenarios such as outdoor and old residential areas. Furthermore, the rope 405 can be used to assist in fixing the magnetic base 401 with the electrically controlled telescopic rod 201, expanding the applicable and fixed scenarios of the overall device.

[0050] The working principle of all the content in the above embodiments can be divided into six stages, as follows: Inspection preparation phase: Staff members arrived at the inspection site with the complete set of equipment. Based on the spatial environment, distance, and inspection requirements of the target inspection location (such as inside the distribution box, outdoor main line, and concealed branch line), they selected the appropriate component configuration: determined the number of assembly groups for the first component, selected the corresponding displacement component 306, and checked the integrity of each component (such as the telescopic function of the electric telescopic rod 201, the magnetic attraction force of the magnet 205, the sealing status of the air injection valve pipe 209 and the air release plug 210, and the firmness of the rope 405, etc.). If the detector 1 is a clamp-type or infrared type that requires precise alignment, it is fixed to the support shell 303 of the second component by connecting the bolt post 301 and the bolt sleeve 302 with threads, ensuring that the connection is tight and not loose. Installation setup phase (third component operation): Determine the fixing carrier: If the fixing surface is made of metal (such as the outer shell of a distribution box or a metal bracket), remove the barrier plate 404 on the magnetic base 401 so that the magnetic sheet 403 in the inner cavity can be directly attracted to the surface of the metal carrier to achieve initial fixing; if it is a non-metallic carrier, pull out the rope 405 through the through hole 402 on the magnetic base 401 to tie and fix the magnetic base 401 to a stable structure such as a bracket or pole. Coarse positioning and adjustment phase (first component operation): Component assembly: According to the detection distance and space avoidance requirements, the first component of a preset number is assembled. The magnets 205 on the fastener 204 attract each other to form a cavity that wraps around and limits the ball joint 206. At the same time, the limiting groove formed by the notch on the upper part of the fastener 204 limits the rotation direction of the ball joint 206 to match the layout direction of the detection line. Posture adjustment: Manually stretch or retract each section of the electric telescopic rod 201 to adjust the overall length, and at the same time rotate the ball joint 206 to change the angle of each section, avoid obstacles such as crowded components and line insulation layers in the distribution box, so that the detector 1 is roughly close to the target detection position; if the electric telescopic rod 201 at the front end is equipped with a laser pointer, turn on the laser pointer to assist in aiming and initially lock the target line; Rigid locking: Gas is injected into the vertical groove 208 of the base 202 through a portable gas pressurizing tank connected to the gas injection valve pipe 209. The gas pressure pushes the compression spring A211 of the extrusion piece 212 to move upward, so that the silicone strip 213 in the recessed cavity of the extrusion piece 212 and the silicone granules 207 at the bottom of the ball joint 206 are tightly pressed together, so as to achieve rigid locking between the ball joint 206 and the electric telescopic rod 201, ensuring no shaking or displacement, and completing the coarse positioning; Precision fine-tuning phase (second component operation): Deviation correction: Observe the alignment status of the probe of the detector 1 with the target line (such as whether the clamp probe is in contact with the wire, whether the infrared probe is perpendicular to the heating point). If there is a slight angular deviation, turn the fine adjustment rod 308 on the support shell 303 to drive the push block 309 at the end to move linearly. Since the push block 309 adopts a slope design of less than 90 degrees, the linear displacement of the fine adjustment rod 308 is converted into a small deflection of the displacement element 306 through the slope transmission, so as to accurately correct the orientation deviation. Two-way adaptation: The horizontal and vertical fine-tuning groups work together. When adjusting, if one fine-tuning rod 308 is turned, the other fine-tuning rod 308 can be adjusted in the opposite direction to move away from the displacement member 306, so as to avoid obstructing the adjustment. The springs B307 on both sides of the displacement member 306 extend and retract synchronously with the movement of the displacement member 306 to ensure smooth adjustment, and at the same time provide stable support after the fine-tuning is completed. Final alignment: Fine-tuning ensures that the probe of detector 1 is in the optimal alignment posture with the target line and detection position, ensuring no attenuation of the detection signal and completing accurate positioning; Inspection operation phase: Start detector 1 to collect core data such as current, leakage current, insulation resistance, and temperature of the target line. The data is transmitted to the main station system or edge computing unit in real time for analysis such as transformer area line loss rate calculation, fault diagnosis, electricity theft investigation, and three-phase imbalance monitoring. If multiple points need to be tested continuously, first release the gas in the vertical groove 208 through the vent plug 210. The spring A211 resets and drives the extruder 212 to detach from the silicone pellet 207, unlocking the ball joint 206 and the electric telescopic rod 201. Repeat the coarse positioning and precise fine adjustment steps, move to the next testing position, lock it, and continue testing. Finishing and packing stage: After the test is completed, turn off the tester 1, completely release the gas in the vertical groove 208 through the vent plug 210, unlock all joint segments of the first component, and retract each electrically controlled telescopic rod 201 to its shortest state. Disassembly of the assembly: Separate the components of the first assembly, reinsert the barrier plate 404 into the magnetic base 401, weaken the magnetism of the magnetic sheet 403, and remove the magnetic base 401. Storage and organization: Use ropes 405 to tie and fix the disassembled parts along the recessed annular grooves 406 of each electronically controlled telescopic rod 201 to reduce storage volume; check whether each part is intact, sort and classify the detector 1, first component, second component and third component, and carry them away from the site.

[0051] Please refer to the above work process. Figures 1 to 12 .

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] 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 portable intelligent testing instrument for inspecting power circuits in a transformer substation, comprising: The detector (1) is characterized in that it further includes: a first component; The first component includes an electrically controlled telescopic rod (201), a base (202) is fixedly connected to the telescopic end of the electrically controlled telescopic rod (201), a sliding groove (203) is provided on the base (202), a fastener (204) is slidably connected in the sliding groove (203), a magnet (205) is fixedly connected to the flat wall of the fastener (204), a ball joint (206) is ball-jointed in the two fasteners (204), and a silicone pellet (207) is fixedly connected to the bottom of the ball joint (206). A vertical groove (208) is provided on the base (202), an air injection valve pipe (209) is fixedly connected to the base (202), and an air vent plug (210) is provided on the base (202). A spring A (211) is fixedly connected inside the vertical groove (208). A pressing member (212) is fixedly connected to the top of the spring A (211). A recessed cavity is provided on the pressing member (212), and a silicone strip (213) is fixedly connected inside the recessed cavity. The first component may be configured in multiple groups depending on the situation.

2. The portable intelligent testing instrument for inspecting power circuits in a transformer substation according to claim 1, characterized in that: It also includes a second component; The second component includes a bolt post (301) fixedly connected to the top of the ball joint (206), a bolt sleeve (302) threadedly connected to the bolt post (301), and a support shell (303) fixedly connected to the top of the bolt sleeve (302). The inner cavity of the support shell (303) is provided with a sliding groove (304), and a sliding column (305) is slidably connected in the sliding groove (304).

3. The portable intelligent testing instrument for inspecting power circuits in a transformer substation according to claim 2, characterized in that: The top end of the sliding column (305) is fixedly connected to a displacement member (306), which is adapted to slide in the inner cavity of the support shell (303); Springs B (307) are fixedly connected to both sides of the displacement member (306). The end of the spring B (307) away from the displacement member (306) is fixedly connected to the inner wall of the support shell (303). The support shell (303) is threadedly connected to a fine adjustment rod (308). A push block (309) is fixedly connected to the end of the fine adjustment rod (308).

4. The portable intelligent testing instrument for inspecting power circuits in a transformer substation according to claim 1, characterized in that: It also includes a third component; The third component includes a magnetic base (401) at the bottom of the electrically controlled telescopic rod (201) located at the bottommost end. The magnetic base (401) is fixedly connected to the electrically controlled telescopic rod (201). A through hole (402) is provided on the magnetic base (401). A magnetic sheet (403) is provided in the inner cavity of the magnetic base (401). A baffle plate (404) is movably inserted into the magnetic base (401).

5. A portable intelligent testing instrument for inspecting power circuits in a transformer substation according to claim 4, characterized in that: A rope (405) is threaded through the through hole (402), and a recessed annular groove (406) is formed on the outer ring wall of the electrically controlled telescopic rod (201).

6. The portable intelligent testing instrument for inspecting power circuits in a transformer substation according to claim 1, characterized in that: The fastening parts (204) are in pairs and magnetically attracted to each other with the magnet (205) to form the enclosing and limiting cavity of the ball joint (206); and after the two are fastened and spliced, the notch at the top can form a limiting groove.

7. A portable intelligent testing instrument for inspecting power circuits in a transformer substation according to claim 3, characterized in that: The displacement component (306) comes in two forms: a U-shape and a flat sheet.

8. A portable intelligent testing instrument for inspecting power circuits in a transformer substation according to claim 3, characterized in that: The support shell (303), sliding groove (304), sliding column (305), displacement component (306), spring B (307), fine-tuning rod (308), and pushing block (309) form a fine-tuning group, and there are two groups in total.

9. A portable intelligent testing instrument for inspecting power circuits in a transformer substation according to claim 8, characterized in that: The bottom surface of the displacement member (306) is in contact with the upper surface of the push block (309); the push block (309) is set with an inclined surface of less than ninety degrees.

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