Multi-parameter intelligent measuring device of power frequency non-partial discharge test transformer

Abstract

The invention relates to the technical field of transformer measuring equipment, and particularly discloses a multi-parameter intelligent measuring device of a power frequency non-partial discharge test transformer, which comprises a display, and the top of the display is fixedly connected with a connecting line. Second fixing plates on the two sides work at the same time, so that an annular structure composed of magnetic cores and a conductor tube are located on the same central axis, and then the precision of detection data is greatly improved. The first expansion plate, the second expansion plate and the third expansion plate are located on the same central axis with the second fixing plate all the time when the first expansion plate, the second expansion plate and the third expansion plate deform, the device can be matched with transformer conductor tubes with different diameters through a variable annular structure, the applicability of the device is greatly improved, and the situation that the detection cost is increased due to the fact that clamps need to be frequently replaced is avoided. And meanwhile, the use of workers is also facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of transformer measuring equipment, in particular to a multi-parameter intelligent measuring device for a power frequency non-partial discharge test transformer. Background Art

[0002] In the field of transformer testing, a multi-parameter intelligent measurement device for power-frequency non-partial discharge test transformers utilizes a combined magnetic core structure and an adaptive clamping mechanism to collect and analyze magnetic field data from transformer conductors. The device utilizes two fixed plates on either side to ensure coaxiality between the magnetic core and the conductor. Combined with a variable annular expansion plate structure, it can accommodate conductors of varying diameters. Automated clamping and data transmission improve detection accuracy and efficiency, making it suitable for partial discharge testing in power equipment production and maintenance, and crucial for ensuring transformer safety.

[0003] Traditional transformer partial discharge measurement equipment has significant shortcomings. In terms of detection accuracy, traditional devices mostly use fixed fixtures, and the coaxiality of the magnetic core and the conductor tube is difficult to ensure. Installation deviations can easily lead to errors in magnetic field data collection, affecting the reliability of the test results. The compatibility is poor, and it cannot adapt to conductor tubes of different diameters. Multiple sets of special fixtures are required, which increases the complexity and cost of operation. The degree of automation is low, and manual adjustment of the fixture is time-consuming and labor-intensive. It is also unable to dynamically offset the impact of external interference (such as wind and vibration) on the detection process, resulting in large data fluctuations. In addition, traditional equipment lacks a real-time fixing mechanism, and the device is prone to shaking or shifting during the detection process, further reducing the detection accuracy. It is also inconvenient to disassemble and clean, making it difficult to meet the efficient and accurate detection needs of modern power equipment. Summary of the Invention

[0004] (1) Technical problems solved

[0005] The present invention provides a multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer, which solves the problems mentioned in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-parameter intelligent measuring device for a power frequency non-partial discharge test transformer, including a display, the top of which is fixedly connected to a connecting wire, and also including: a measuring mechanism, the measuring mechanism is fixedly connected to the end of the connecting wire away from the display; an enhancing mechanism, the enhancing mechanism is fixedly installed on the measuring mechanism; wherein the measuring mechanism includes a No. 1 fixing plate, two of the No. 1 fixing plates are symmetrically arranged, and the bottom No. 1 fixing plate is fixedly connected to the top of the connecting wire, wherein the inner surfaces of the two No. 1 fixing plates are arranged to fit each other, and a magnetic core is fixedly embedded in the interior of the No. 1 fixing plate, the magnetic core is arranged in a semi-annular shape, and the magnetic cores in the two No. 1 fixing plates are combined into a ring shape.

[0008] According to one embodiment of the present invention, the side surface of the top No. 1 fixing plate is fixedly connected to an upper connecting plate, and the side surface of the bottom No. 1 fixing plate is fixedly connected to a lower connecting plate, and the upper connecting plate and the lower connecting plate are arranged parallel to each other.

[0009] According to one embodiment of the present invention, the bottom surface of the upper connecting plate is fixedly connected to the upper hinge plate, and the upper surface of the lower connecting plate is fixedly connected to the lower hinge plate. The end of the upper hinge plate away from the upper connecting plate and the end of the lower hinge plate away from the lower connecting plate are elastically hinged to each other through a torsion spring, and the upper hinge plate and the lower hinge plate are initially combined into a bent shape.

[0010] According to one embodiment of the present invention, the reinforcing mechanism includes a No. 2 fixing plate, and the No. 2 fixing plates are symmetrically arranged in pairs in a group. The No. 2 fixing plates are symmetrically fixedly connected to the two side surfaces of the No. 1 fixing plate, and the combination form of the No. 2 fixing plates is the same as that of the No. 1 fixing plate.

[0011] According to one embodiment of the present invention, a mounting groove is provided inside the No. 2 fixed plate, and the mounting grooves in the same group of No. 2 fixed plates are combined into a ring shape. The inner surface of the mounting groove is fitted with a No. 1 expansion plate, and the outer surfaces on both sides of the No. 1 expansion plate are symmetrically fixedly connected with sliding bars. The inner surface of the mounting groove is provided with a sliding groove, and the sliding bar is elastically slidably connected in the sliding groove.

[0012] According to one embodiment of the present invention, the two ends of the No. 1 expansion plate are symmetrically and elastically slidably connected to the No. 2 expansion plate, and the end of the No. 2 expansion plate away from the No. 1 expansion plate is elastically and slidably plugged into the No. 3 expansion plate. The No. 1 expansion plate and the No. 2 expansion plate and the No. 3 expansion plate are combined into a semicircular ring shape, and the inner ends of the No. 1 expansion plate and the No. 3 expansion plate are fixedly connected with an expansion bag, and the expansion bag is arranged in the mounting groove.

[0013] According to one embodiment of the present invention, the upper connecting plate is fixedly connected to the mounting plate at one end away from the No. 1 fixed plate, and the upper surface of the lower connecting plate is fixedly connected to a connecting frame, the connecting frame is arranged in an arc shape, and the top of the connecting frame is slidably inserted into the mounting plate.

[0014] According to one embodiment of the present invention, the top of the connecting frame is slidably connected to a movable frame, the movable frame is arranged in an arc shape, the bottom of the movable frame is fixedly connected to the mounting plate, the interior of the movable frame is fixedly connected to a stretching bag, the outer surface of the stretching bag is also fixedly connected to the top inner surface of the connecting frame, and the internal cavity of the stretching bag is connected to the internal cavity of the expansion bag through a hose.

[0015] The top of the fixing plate is provided with a fixing groove, and the fixing plate is fixedly connected to the fixing groove of the fixing plate at one end thereof. The fixing plate is arranged in a corrugated shape, and the bottom of the fixing plate is fixedly connected to the fixing groove. The fixing plate is slidably inserted into the fixing groove, and an elastic retractable plate is fixedly installed at the bottom of the fixing groove of the fixing plate. The upper surface of the fixing plate is provided with an auxiliary groove, and an auxiliary plate is hinged in the auxiliary groove by a torsion spring, and the inner surface of the auxiliary plate is fixedly connected to the limit plate, and the end of the limit plate away from the auxiliary plate passes through the fixing plate and is slidably inserted into the fixing plate. The interior of the auxiliary groove is fixedly connected with an auxiliary bag, and the outer surface of the auxiliary bag is fixedly connected to the inner surface of the auxiliary plate, and the internal cavity of the auxiliary bag is connected to the internal cavity of the elastic retractable plate through a hose. When partial discharge detection of the transformer is required, the upper connecting plate and the lower connecting plate can be squeezed inwardly, so that the upper connecting plate can rotate relative to each other and approach the lower connecting plate through the upper hinge plate and the lower hinge plate, thereby driving the two No. 1 fixing plates to move to both sides. The first fixing plate is then opened, and the pressure on the first and second connecting plates is gradually released through the conductor tube on the transformer. At this time, the first and second connecting plates drive the two first fixing plates to reset and close under the action of elastic force, so that the magnetic combination is annularly sleeved on the outside of the conductor tube. The magnetic field generated during the operation of the conductor tube is analyzed, and the magnetic field data is transmitted to a display via a connecting line to complete the analysis of the current in the conductor tube during the operation of the transformer, and ultimately complete the partial discharge detection of the conductor tube on the transformer. When the two first fixing plates begin to separate from each other, they drive the second fixing plate to separate synchronously. When the conductor tube is inserted into the first fixing plate, the second fixing plate is also inserted simultaneously. As the first fixing plate is reset, the second fixing plate is also reset, and the first and third expansion plates in the mounting grooves of the second fixing plate are gradually pressed against the outer surface of the conductor tube. When the first and second fixing plates are completely reset, the first and third expansion plates cooperate with each other to complete the clamping and fixing of the device to the conductor tube.

[0016] (3) Beneficial effects

[0017] The present invention provides a multi-parameter intelligent measurement device for power frequency non-partial discharge test transformers. It has the following beneficial effects:

[0018] (1) The multi-parameter intelligent measuring device for the power frequency non-partial discharge test transformer has the No. 2 fixed plates on both sides working simultaneously, so that the annular structure composed of the magnetic core and the conductor tube are on the same central axis, thereby greatly improving the accuracy of the test data. At the same time, the No. 1 expansion plate is limited by the cooperation of the sliding bar and the sliding groove, so that the No. 1 expansion plate, the No. 2 expansion plate and the No. 3 expansion plate are always on the same central axis with the No. 2 fixed plate when they are deformed. Then, the variable annular structure allows the device to match transformer conductor tubes of different diameters, greatly improving the applicability of the device, avoiding the need to frequently replace the fixtures resulting in increased testing costs, and also making it easier for staff to use.

[0019] (2) The multi-parameter intelligent measuring device of the power frequency non-partial discharge test transformer, when the upper connecting plate and the lower connecting plate are close to each other, it means that the installation plate will move with the upper connecting plate, and then pull the mobile frame to which it is fixed to start sliding downward along the connecting frame, thereby stretching the stretching bag inside the mobile frame, so that the internal cavity air pressure of the stretching bag increases, that is, the air pressure begins to be extracted from the expansion bag through the hose, and then the expansion bag drives the No. 1 expansion plate, the No. 2 expansion plate and the No. 3 expansion plate to expand, and when the upper connecting plate and the lower connecting plate are reset under the action of elastic force, the expansion bag also begins to reset, and at this time, the No. 1 expansion plate, the No. 2 expansion plate and the No. 3 expansion plate begin to shrink under the action of elasticity, thereby achieving the goal of connecting the No. 1 fixed plate and the No. 2 fixed plate. When the fixed plates are separated, the expansion plates No. 1, No. 2 and No. 3 are expanded synchronously, and when the fixed plates No. 1 and No. 2 are reset, they start to contract synchronously, so that the expansion plates No. 1, No. 2 and No. 3 are in the maximum extension state during contraction, and the conductor tube is contracted when it is clamped, thereby greatly improving the degree of fit between the expansion plates No. 1 and No. 3 and the outer surface of the conductor tube, so that the central axis of the conductor tube is consistent with the central axis of the fixed plates No. 1 and No. 2, thereby greatly improving the detection accuracy of the magnetic core. At the same time, by automatically fixing the device to the conductor tube, it can also avoid the problem of relative shaking between the magnetic core and the conductor tube caused by wind during detection, which affects the detection data.

[0020] (3) The multi-parameter intelligent measuring device of the power frequency non-partial discharge test transformer, when the mounting plate approaches the upper connecting plate and the lower connecting plate, it means that the staff's fingers begin to squeeze the mounting plate and the lower connecting plate. At the beginning, the staff squeezes the auxiliary plate first. Under the action of the squeezing force, the auxiliary plate first begins to move into the auxiliary groove of the mounting plate, that is, it begins to squeeze the auxiliary bag in the auxiliary groove. Under the action of the squeezing force, the air pressure in the auxiliary bag begins to increase, that is, the internal air pressure is transmitted to the elastic telescopic rod through the hose, so that the elastic telescopic plate begins to expand in the No. 1 fixed plate, thereby pushing the plug-in piece to move up along the plug-in groove, and finally the plug-in piece is separated from the plug-in with the bottom No. 1 fixed plate. At this time, with the squeezing When the pressure increases, the mounting plate begins to approach the lower connecting plate, that is, the auxiliary bag begins to reset when the squeeze on the device is released, that is, the elastic telescopic plate begins to shrink and reset. At this time, under the elastic force of the elastic sheet, the plug-in sheet moves down along the plug-in slot and is finally plugged into the plug-in slot of the bottom No. 1 fixing plate. The opening process of the No. 1 fixing plate is a rotational action, so that when the No. 1 fixing plate is reset and closed, the two No. 1 fixing plates are automatically plugged and fixed vertically, avoiding the problem of the device being accidentally opened and dropped during the detection process. When opening, the plug-in sheet first releases the fixing effect on the No. 1 fixing plate, which does not affect the subsequent opening of the No. 1 fixing plate, thereby greatly improving the degree of automation of the device and facilitating use by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0022] Figure 2 This is a schematic diagram of the No. 1 fixing plate and its connection structure of the present invention;

[0023] Figure 3 Schematic diagram of the magnetic core and its connection structure of the present invention;

[0024] Figure 4 Schematic diagram of the slide bar and its connection structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the elastic sheet and its connection structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the elastic expansion board and its connection structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the mounting plate and its connection structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the auxiliary plate and its connection structure of the present invention.

[0029] In the figure: 1. display; 2. connecting line; 3. measuring mechanism; 31. fixed plate No. 1; 32. magnetic core; 33. upper connecting plate; 34. lower connecting plate; 35. upper hinge plate; 36. lower hinge plate; 4. reinforcing mechanism; 41. fixed plate No. 2; 42. mounting slot; 43. expansion plate No. 1; 44. slide bar; 45. slide slot; 46. expansion plate No. 2; 47. expansion plate No. 3; 48. expansion bladder; 49. mounting plate; 410. connecting frame; 411. movable frame; 412. stretching bladder; 413. plug-in slot; 414. elastic sheet; 415. plug-in sheet; 416. elastic telescopic plate; 417. auxiliary slot; 418. auxiliary plate; 419. limit plate; 420. auxiliary bladder. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] First embodiment: Figures 1 to 8 As shown, the present invention provides a technical solution: a multi-parameter intelligent measuring device for a power frequency non-partial discharge test transformer, comprising a display 1, a connecting wire 2 fixedly connected to the top of the display 1, and further comprising:

[0032] The measuring mechanism 3 is fixedly connected to the end of the connecting line 2 away from the display 1;

[0033] The reinforcing mechanism 4 is fixedly mounted on the measuring mechanism 3;

[0034] The measuring mechanism 3 includes a No. 1 fixed plate 31, two of which are symmetrically arranged. The bottom No. 1 fixed plate 31 is fixedly connected to the top of the connecting line 2, and the inner surfaces of the two No. 1 fixed plates 31 are arranged to fit each other. A magnetic core 32 is fixedly embedded in the interior of the No. 1 fixed plate 31, and the magnetic core 32 is arranged to be semi-annular. The magnetic cores 32 in the two No. 1 fixed plates 31 are combined into a ring shape.

[0035] An upper connecting plate 33 is fixedly connected to the side surface of the top No. 1 fixing plate 31 , and a lower connecting plate 34 is fixedly connected to the side surface of the bottom No. 1 fixing plate 31 . The upper connecting plate 33 and the lower connecting plate 34 are arranged parallel to each other.

[0036] The bottom surface of the upper connecting plate 33 is fixedly connected to the upper hinge plate 35, and the upper surface of the lower connecting plate 34 is fixedly connected to the lower hinge plate 36. The end of the upper hinge plate 35 away from the upper connecting plate 33 and the end of the lower hinge plate 36 away from the lower connecting plate 34 are elastically hinged to each other through a torsion spring. The upper hinge plate 35 and the lower hinge plate 36 are initially combined into a bent shape.

[0037] Second embodiment: Figures 1 to 8 As shown, the reinforcing mechanism 4 includes a No. 2 fixing plate 41, which is symmetrically arranged in pairs in a group. The No. 2 fixing plate 41 is symmetrically fixedly connected to the two side surfaces of the No. 1 fixing plate 31, and the combination form of the No. 2 fixing plate 41 is the same as that of the No. 1 fixing plate 31.

[0038] An installation groove 42 is provided inside the No. 2 fixing plate 41. The installation grooves 42 in the same group of No. 2 fixing plates 41 are combined into a ring shape. The inner surface of the installation groove 42 is fitted with a No. 1 expansion plate 43. The outer surfaces of both sides of the No. 1 expansion plate 43 are symmetrically fixedly connected with sliding bars 44. The inner surface of the installation groove 42 is provided with a sliding groove 45. The sliding bar 44 is elastically slidably connected in the sliding groove 45.

[0039] The two ends of the No. 1 expansion plate 43 are symmetrically and elastically connected to the No. 2 expansion plate 46 in a sliding manner. The end of the No. 2 expansion plate 46 away from the No. 1 expansion plate 43 is elastically and slidably connected to the No. 3 expansion plate 47. The No. 1 expansion plate 43 and the No. 2 expansion plate 46 and the No. 3 expansion plate 47 are combined into a semicircular ring shape. The inner ends of the No. 1 expansion plate 43 and the No. 3 expansion plate 47 are fixedly connected with an expansion bag 48, and the expansion bag 48 is arranged in the mounting groove 42.

[0040] The end of the upper connecting plate 33 away from the No. 1 fixed plate 31 is fixedly connected to the mounting plate 49, and the upper surface of the lower connecting plate 34 is fixedly connected to a connecting frame 410, which is arranged in an arc shape, and the top of the connecting frame 410 is slidably inserted into the mounting plate 49.

[0041] The top of the connecting frame 410 is slidably connected to a movable frame 411, which is arranged in an arc shape. The bottom of the movable frame 411 is fixedly connected to the mounting plate 49. The interior of the movable frame 411 is fixedly connected to a stretching bag 412. The outer surface of the stretching bag 412 is also fixedly connected to the top inner surface of the connecting frame 410. The internal cavity of the stretching bag 412 is connected to the internal cavity of the expansion bag 48 through a hose.

[0042] The first fixing plate 31 is provided with a plug-in slot 413 at one end away from the upper connecting plate 33. An elastic sheet 414 is fixedly connected to the plug-in slot 413 on the top first fixing plate 31. The elastic sheet 414 is configured to be corrugated. A plug-in sheet 415 is fixedly connected to the bottom of the elastic sheet 414. The plug-in sheet 415 is slidably plugged into the plug-in slot 413. An elastic retractable plate 416 is fixedly installed at the bottom of the plug-in slot 413 on the bottom first fixing plate 31. The upper surface of the mounting plate 49 is provided with a An auxiliary groove 417, an auxiliary plate 418 is hinged in the auxiliary groove 417 through a torsion spring, the inner surface of the auxiliary plate 418 is fixedly connected to the limiting plate 419, and the end of the limiting plate 419 away from the auxiliary plate 418 is slidably inserted into the mounting plate 49, and the interior of the auxiliary groove 417 is fixedly connected to an auxiliary bag 420, the outer surface of the auxiliary bag 420 is fixedly connected to the inner surface of the auxiliary plate 418, and the internal cavity of the auxiliary bag 420 is connected to the internal cavity of the elastic telescopic plate 416 through a hose.

[0043] During operation, when partial discharge detection of the transformer is required, the upper connecting plate 33 and the lower connecting plate 34 can be squeezed inward, so that the upper connecting plate 33 is relatively rotated close to the lower connecting plate 34 through the upper hinge plate 35 and the lower hinge plate 36, thereby driving the two No. 1 fixing plates 31 to open to both sides, and then the opened No. 1 fixing plate 31 is gradually released from the squeezing of the No. 1 and No. 2 connecting plates through the conductor tube on the transformer. At this time, under the action of elastic force, the No. 1 and No. 2 connecting plates drive the two No. 1 fixing plates 31 to reset and close, so that the magnetic combination is annularly sleeved on the outside of the conductor tube, and the magnetic field generated during the operation of the conductor tube is analyzed, and the magnetic field data is transmitted to the display 1 through the connecting line 2, completing the operation of the transformer. When the current of the conductor tube is analyzed, the partial discharge detection of the conductor tube on the transformer is finally completed. When the two No. 1 fixing plates 31 begin to separate from each other, the No. 2 fixing plate 41 will be driven to separate synchronously. When the conductor tube is placed inside the No. 1 fixing plate 31, the No. 2 fixing plate 41 will be placed synchronously. As the No. 1 fixing plate 31 is reset, the No. 2 fixing plate 41 will be reset at the same time, and then the No. 1 expansion plate 43 and the No. 3 expansion plate 47 in the mounting groove 42 on the No. 2 fixing plate 41 will gradually be squeezed on the outer surface of the conductor tube. When the No. 1 fixing plate 31 and the No. 2 fixing plate 41 are reset, the No. 1 expansion plate 43 and the No. 3 expansion plate 47 cooperate with each other to fix the device on the conductor tube through the clamping action, and the No. 2 fixing plates 41 on both sides work simultaneously. The ring structure composed of the magnetic core 32 and the conductor tube are on the same central axis, thereby greatly improving the accuracy of the detection data. At the same time, the No. 1 expansion plate 43 is limited by the cooperation of the slide bar 44 and the slide groove 45, so that the No. 1 expansion plate 43, the No. 2 expansion plate 46 and the No. 3 expansion plate 47 are always on the same central axis with the No. 2 fixed plate 41 when they are deformed. Then, through the variable ring structure, the device can match transformer conductor tubes of different diameters, greatly improving the applicability of the device, avoiding the need to frequently replace the fixture to increase the detection cost, and also facilitating the use of the staff. When the upper connecting plate 33 and the lower connecting plate 34 are close to each other, it means that the mounting plate 49 will move with the upper connecting plate 33, thereby pulling the mobile frame 4 to which it is fixed 11 begins to slide downward along the connecting frame 410, thereby stretching the stretching bag 412 inside the movable frame 411, so that the air pressure in the internal cavity of the stretching bag 412 increases, that is, air pressure begins to be extracted from the expansion bag 48 through the hose, and then the contraction of the expansion bag 48 drives the No. 1 expansion plate 43, the No. 2 expansion plate 46 and the No. 3 expansion plate 47 to expand, and when the upper connecting plate 33 and the lower connecting plate 34 are reset under the action of elastic force, the expansion bag 48 also begins to reset. At this time, under the action of elasticity, the No. 1 expansion plate 43, the No. 2 expansion plate 46 and the No. 3 expansion plate 47 begin to contract, thereby realizing the simultaneous expansion of the No. 1 expansion plate 43, the No. 2 expansion plate 46 and the No. 3 expansion plate 47 when the No. 1 fixed plate 31 and the No. 2 fixed plate 41 are separated.And when the No. 1 fixing plate 31 and the No. 2 fixing plate 41 are reset, they begin to shrink synchronously, thereby realizing that the No. 1 expansion plate 43, the No. 2 expansion plate 46 and the No. 3 expansion plate 47 are in the maximum extension state during shrinkage, and when the conductor tube is clamped, it is a contraction clamping, thereby greatly improving the fit between the No. 1 expansion plate 43 and the No. 3 expansion plate 47 and the outer surface of the conductor tube, so that the central axis of the conductor tube is consistent with the central axis of the No. 1 fixing plate 31 and the No. 2 fixing plate 41, thereby greatly improving the detection accuracy of the magnetic core 32, and at the same time, by automatically fixing the device to the conductor tube This can avoid the problem that the magnetic core 32 and the conductor tube are constantly shaking relative to each other and affecting the test data due to the effect of wind during the test. When the mounting plate 49 approaches the upper connecting plate 33 and the lower connecting plate 34, it means that the fingers of the staff begin to squeeze the mounting plate 49 and the lower connecting plate 34. At the beginning, the staff squeezes the auxiliary plate 418 first. Under the action of the squeezing force, the auxiliary plate 418 first starts to move into the auxiliary groove 417 of the mounting plate 49, that is, it starts to squeeze the auxiliary bag 420 in the auxiliary groove 417. Under the action of the squeezing force, the auxiliary bag 420 in the auxiliary groove 417 is squeezed. The air pressure in the bag 420 begins to increase, that is, the internal air pressure is transmitted to the elastic telescopic rod through the hose, so that the elastic telescopic plate 416 begins to expand in the No. 1 fixed plate 31, thereby pushing the plug-in piece 415 to move up along the plug-in slot 413, and finally the plug-in piece 415 is disconnected from the plug-in with the bottom No. 1 fixed plate 31. At this time, as the squeezing force increases, the mounting plate 49 begins to approach the lower connecting plate 34, that is, when the squeezing of the device is released, the auxiliary bag 420 begins to reset, that is, the elastic telescopic plate 416 begins to shrink and reset. At this time, under the elastic force of the elastic piece 414 The lower plug-in piece 415 moves downward along the plug-in slot 413 and is finally plugged into the plug-in slot 413 of the bottom No. 1 fixing plate 31. The opening process of the No. 1 fixing plate 31 is a rotational action, and then the two No. 1 fixing plates 31 are automatically plugged and fixed vertically when the No. 1 fixing plate 31 is reset and closed. This prevents the device from accidentally opening and falling during the inspection process. When opening, the plug-in piece 415 first releases the fixing effect on the No. 1 fixing plate 31, which does not affect the subsequent opening of the No. 1 fixing plate 31, thereby greatly improving the automation level of the device and facilitating its use by staff.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer, comprising a display (1), characterized in that: The top of the display (1) is fixedly connected to a connecting line (2), and further comprises: a measuring mechanism (3), wherein the measuring mechanism (3) is fixedly connected to an end of the connecting line (2) away from the display (1); A reinforcing mechanism (4), wherein the reinforcing mechanism (4) is fixedly mounted on the measuring mechanism (3); The measuring mechanism (3) comprises a No. 1 fixing plate (31), two No. 1 fixing plates (31) are symmetrically arranged, the bottom No. 1 fixing plate (31) is fixedly connected to the top of the connecting line (2), the inner surfaces of the two No. 1 fixing plates (31) are arranged to fit each other, a magnetic core (32) is fixedly embedded in the interior of the No. 1 fixing plate (31), the magnetic core (32) is arranged to be semi-annular, and the magnetic cores (32) in the two No. 1 fixing plates (31) are combined into an annular shape.

2. The multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer according to claim 1, characterized in that: The side surface of the top No. 1 fixing plate (31) is fixedly connected to an upper connecting plate (33), and the side surface of the bottom No. 1 fixing plate (31) is fixedly connected to a lower connecting plate (34), and the upper connecting plate (33) and the lower connecting plate (34) are arranged parallel to each other.

3. The multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer according to claim 2, characterized in that: The bottom surface of the upper connecting plate (33) is fixedly connected to an upper hinge plate (35), and the upper surface of the lower connecting plate (34) is fixedly connected to a lower hinge plate (36). One end of the upper hinge plate (35) away from the upper connecting plate (33) and one end of the lower hinge plate (36) away from the lower connecting plate (34) are elastically hinged to each other through a torsion spring. The upper hinge plate (35) and the lower hinge plate (36) are initially combined into a bent shape.

4. The multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer according to claim 3, characterized in that: The reinforcing mechanism (4) comprises a second fixing plate (41), wherein the second fixing plates (41) are symmetrically arranged in pairs to form a group, and the second fixing plates (41) are symmetrically fixedly connected to the two side surfaces of the first fixing plate (31), and the combination form of the second fixing plates (41) is the same as that of the first fixing plate (31).

5. The multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer according to claim 4, characterized in that: The interior of the No. 2 fixing plate (41) is provided with a mounting groove (42), and the mounting grooves (42) in the same group of No. 2 fixing plates (41) are combined into a ring shape. The inner surface of the mounting groove (42) is fitted with a No. 1 expansion plate (43), and the outer surfaces of both sides of the No. 1 expansion plate (43) are symmetrically fixedly connected with sliding bars (44). The inner surface of the mounting groove (42) is provided with a sliding groove (45), and the sliding bar (44) is elastically slidably connected in the sliding groove (45).

6. The multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer according to claim 5, characterized in that: The two ends of the No. 1 expansion plate (43) are symmetrically and elastically slidably connected to the No. 2 expansion plate (46), and the end of the No. 2 expansion plate (46) away from the No. 1 expansion plate (43) is elastically and slidably plugged with the No. 3 expansion plate (47). The No. 1 expansion plate (43), the No. 2 expansion plate (46), and the No. 3 expansion plate (47) are combined into a semicircular ring shape. The inner ends of the No. 1 expansion plate (43) and the No. 3 expansion plate (47) are fixedly connected with an expansion bag (48), and the expansion bag (48) is arranged in the mounting groove (42).

7. The multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer according to claim 6, characterized in that: One end of the upper connecting plate (33) away from the first fixing plate (31) is fixedly connected to a mounting plate (49), and the upper surface of the lower connecting plate (34) is fixedly connected to a connecting frame (410), the connecting frame (410) is arranged in an arc shape, and the top of the connecting frame (410) is inserted into the mounting plate (49) through a sliding manner.

8. The multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer according to claim 7, characterized in that: The top of the connecting frame (410) is slidably connected to a movable frame (411), the movable frame (411) is arranged in an arc shape, the bottom of the movable frame (411) is fixedly connected to the mounting plate (49), the interior of the movable frame (411) is fixedly connected to a stretching bag (412), the outer surface of the stretching bag (412) is also fixedly connected to the top inner surface of the connecting frame (410), and the internal cavity of the stretching bag (412) is communicated with the internal cavity of the expansion bag (48) through a hose.

9. The multi-parameter intelligent measuring device for power frequency non-partial discharge test transformer according to claim 8, characterized in that: An inserting groove (413) is provided inside one end of the No. 1 fixing plate (31) away from the upper connecting plate (33), an elastic sheet (414) is fixedly connected inside the inserting groove (413) on the top No. 1 fixing plate (31), the elastic sheet (414) is configured to be corrugated, a plug-in sheet (415) is fixedly connected to the bottom of the elastic sheet (414), the plug-in sheet (415) is slidably inserted into the inserting groove (413), an elastic telescopic plate (416) is fixedly installed at the bottom of the inserting groove (413) on the bottom No. 1 fixing plate (31), and an upper surface of the mounting plate (49) is provided with An auxiliary groove (417), an auxiliary plate (418) is hinged in the auxiliary groove (417) through a torsion spring, the inner surface of the auxiliary plate (418) is fixedly connected to a limiting plate (419), and one end of the limiting plate (419) away from the auxiliary plate (418) is inserted through the mounting plate (49) for sliding connection, and an auxiliary bag (420) is fixedly connected inside the auxiliary groove (417), the outer surface of the auxiliary bag (420) is fixedly connected to the inner surface of the auxiliary plate (418), and the internal cavity of the auxiliary bag (420) is connected to the internal cavity of the elastic telescopic plate (416) through a hose.

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