Auxiliary equipment for current transformer detection

Abstract

The utility model relates to the technical field of electric power circuit detection, and discloses an auxiliary device for current transformer detection, which comprises a detection shell provided with a detection cavity and two positioning cavities, and the detection cavity is positioned between the two positioning cavities; the current transformer body is arranged in the detection cavity; the plurality of positioning arc-shaped plates are arranged in the positioning cavity; the straightening plate is arranged in the positioning cavity, a push plate is arranged on the straightening plate, and an elastic piece is arranged between the push plate and the straightening plate; measurement errors caused by line loosening or displacement are reduced, and stability and accuracy in the measurement process are ensured. And secondly, the anti-fatigue performance is effectively improved through the metal structure of the positioning arc-shaped plate, damage and fatigue possibly caused by traditional bandages and screws are avoided, and the durability of the fixing effect is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to power line detection technical field, concretely relates to a kind of auxiliary equipment for current transformer detection. BACKGROUND

[0002] Current transformer is a kind of equipment widely used in power system, mainly used for measuring current, protecting circuit and monitoring. In practical application, the accuracy and stability of current transformer directly affect the safety and reliability of power system, and the principle of current transformer is based on electromagnetic induction principle, and current transformer is composed of closed core and winding. Its primary winding turns are very few, and it is connected in the current line to be measured, so it often has the full current of line. The secondary winding turns are more, and are connected in measuring instrument and protection circuit. When current transformer works, its secondary circuit is always closed, so the impedance of measuring instrument and protection circuit series coil is very small, and the working state of current transformer is close to short circuit.

[0003] In the detection process of current transformer, the fixation and limit of power line are crucial to measurement accuracy and equipment safety. Current transformer is used for monitoring current, and it is particularly important to ensure the stability and accuracy of line during detection.

[0004] The fixing device in prior art usually includes bandage or screw, these methods rely on mechanical connection to keep the stability of detection line group, and the fatigue of fixing material can be caused by long-term stress or environmental factors (such as temperature change, humidity), the tensile strength and fatigue life of bandage, which is usually made of plastic or fabric material, is usually not as good as metal or composite material, and deformation or fracture can occur after long time stress, and metal bandage can damage detection line group. And screw can cause micro-displacement under repeated stress and vibration, and form looseness. Under high frequency or dynamic load, this looseness can be intensified, further leading to connection failure, reducing its fixing ability, causing looseness, and affecting the measurement accuracy of current transformer. UTILITY MODEL CONTENT

[0005] In view of the defects of prior art, the utility model provides a kind of auxiliary equipment for current transformer detection, to at least alleviate the above problems to some extent.

[0006] The above technical purpose of the utility model is realized by the following technical scheme:

[0007] A kind of auxiliary equipment for current transformer detection, comprising:

[0008] Detection shell, the detection shell has detection cavity and two positioning cavities, the detection cavity is located between two positioning cavities;

[0009] A current transformer body arranged in the detection cavity;

[0010] A plurality of positioning arc-shaped plates arranged in the positioning cavity;

[0011] A straightening plate arranged in the positioning cavity, a push plate being slidingly connected to the straightening plate, and an elastic member being arranged between the push plate and the straightening plate;

[0012] A positioning component arranged between the detection shell and the positioning arc-shaped plates, for synchronously moving the plurality of positioning arc-shaped plates towards the central axis of the positioning cavity;

[0013] Preferably, the positioning component can synchronously move the straightening plate when the positioning arc-shaped plates are moved.

[0014] Preferably, the positioning component comprises a support connected to the detection shell, a threaded pipe being rotatably connected to the support, a first lead screw being threadedly connected to the threaded pipe and slidingly connected to the detection shell, and the first lead screw extending into the detection cavity and being connected to the positioning arc-shaped plates.

[0015] Preferably, the positioning component further comprises a first gear rotatably connected to the detection shell, a second gear being connected to one side of the first gear, and a third gear being connected to the threaded pipe and meshing with the second gear.

[0016] Preferably, a limiting rod is connected in the detection cavity, the straightening plate is slidingly connected to the limiting rod, the push plate is slidingly connected to the straightening plate, a connecting frame is further connected in the detection shell, and a second lead screw is rotatably connected to the connecting frame and threadedly connected to the straightening plate.

[0017] Preferably, a fourth gear is connected to one side of the first gear, a fifth gear is connected to the second lead screw and meshing with the fourth gear, a plurality of clamping grooves are formed in the outer wall of the threaded pipe, a plurality of spring rods are connected to the inner wall of the third gear, one end of the spring rod matched with the clamping groove is semispherical, and the clamping groove is a semispherical groove.

[0018] Preferably, a rotating shaft is rotatably connected to the detection shell, and a sixth gear is connected to the rotating shaft and meshing with the first gear.

[0019] In summary, the utility model mainly has the following beneficial effects:

[0020] The technical scheme of the present application provides significant beneficial effects of the current transformer in circuit line fixation and measurement by setting the detection shell and the design of the positioning arc-shaped plate and the straightening plate. First, the stable fixation of the line reduces the measurement error caused by the loosening or displacement of the line, ensuring the stability and accuracy in the measurement process. Second, the metal structure of the positioning arc-shaped plate effectively improves the fatigue resistance, avoiding damage and fatigue caused by traditional straps and screws, prolonging the durability of the fixation effect.

[0021] In addition, by uniformly applying pressure, the damage to the line caused by concentrated pressure is avoided, reducing the risk of fatigue and damage to the line. The straightening plate, push plate and elastic member maintain the straightness of the line, significantly reducing the influence of additional resistance or impedance, thereby improving the accuracy of current conduction. Maintaining the straightness of the line also reduces electromagnetic interference, further ensuring the stability of the measurement data. Overall, this scheme effectively improves the performance of the current transformer under various working conditions, providing a more accurate and reliable solution for power monitoring. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the overall structure schematic diagram of the utility model;

[0023] Figure 2 is the detection cavity and positioning cavity structure schematic diagram of the utility model;

[0024] Figure 3 is the positioning component structure schematic diagram of the utility model;

[0025] Figure 4 is the straightening plate structure schematic diagram of the utility model;

[0026] Figure 5 is the threaded pipe structure schematic diagram of the utility model;

[0027] Figure 6 is Figure 4 the local structure enlarged schematic diagram of A in

[0028] REFERENCE SIGNS:

[0029] 100, detection shell; 101, positioning cavity; 102, current transformer body; 103, positioning arc-shaped plate; 104, straightening plate; 105, push plate; 106, elastic member; 107, detection cavity;

[0030] 200, support; 201, threaded pipe; 202, first lead screw; 203, first gear; 204, second gear; 205, third gear;

[0031] 300, limiting rod; 301, connecting frame; 302, second lead screw; 303, fourth gear; 304, fifth gear; 305, clamping groove; 306, spring rod; 307, rotating shaft; 308, sixth gear. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] Reference Figures 1-6 A kind of auxiliary equipment for current transformer detection, comprising:

[0034] Detection housing 100, detection housing 100 with two positioning cavities 101 and detection cavity 107, detection cavity 107 is located between two positioning cavities 101;

[0035] Current transformer body 102 is arranged in detection cavity 107;

[0036] Multiple positioning arc plates 103 are arranged in positioning cavity 101;

[0037] Straightening plate 104 is arranged in positioning cavity 101, push plate 105 is slidably connected on straightening plate 104, and elastic member 106 is arranged between push plate 105 and straightening plate 104;

[0038] Positioning component is arranged between detection housing 100 and positioning arc plate 103, for synchronously moving multiple positioning arc plates 103, and multiple positioning arc plates 103 move to the central axis of positioning cavity 101;

[0039] Wherein, positioning component can also synchronously move straightening plate 104 while moving positioning arc plate 103, and straightening plate 104 can continue to move when positioning arc plate 103 moves to preset position;

[0040] By setting the detection shell 100, when applied, the circuit line to be detected can be inserted into the positioning cavity 101 and the detection cavity 107, and then pulled out from the other end of the detection shell 100. The operator can move the positioning components to move the multiple positioning arc-shaped plates 103, and the multiple positioning arc-shaped plates 103 are synchronized to move to the center axis of the positioning cavity 101 to achieve accurate alignment and stable fixation of the circuit line, thereby ensuring the stability and accuracy of the current transformer during the measurement process. This design effectively reduces the measurement error caused by the loosening or displacement of the line. The design of the positioning arc-shaped plate 103 enables it to uniformly distribute the pressure applied to the line, avoiding damage that may be caused by concentrated pressure. This uniform contact and fixation method helps to maintain the integrity and stability of the circuit. Compared with plastic or fabric straps, the metal structure of the positioning arc-shaped plate 103 exhibits higher fatigue resistance under long-term stress and environmental changes, thereby improving the durability of the fixation effect. The design of the positioning arc-shaped plate 103 enables the pressure applied to the line to be evenly distributed, avoiding damage that may be caused by concentrated pressure, thereby reducing the fatigue and damage of the line. Since it does not rely on traditional mechanical connection methods, this scheme effectively avoids damage to the detection line group that may be caused by metal straps, ensuring the integrity and safety of the line.

[0041] In addition, by positioning the plurality of positioning arc-shaped plates 103, after the positioning arc-shaped plates 103 are in contact with the wire, the position of the straightening plate 104 can be continuously moved, the elastic member 106 on the straightening plate 104 and the push plate 105 are moved, after the plurality of positioning arc-shaped plates 103 are in contact and press the wire, the two parts of the wire are fixed, the movement of the straightening plate 104 can make the push plate 105 press the wire, the elastic member 106 can give the push plate 105 the force to press the wire, so that a section of the wire inside the current transformer body 102 is in a straightened state, the relationship between the push plate 105, the straightening plate 104 and the elastic member 106 can be regarded as a whole mechanism, the elastic member 106 is fixedly connected with the push plate 105, so as to ensure that the elastic member can exert appropriate pressure when the push plate 105 moves. This connection mode makes the elastic member 106 can provide the necessary elastic force to support the straightening of the wire when the push plate 105 exerts force, in this design, the elastic member 106 can be a spring, and the two ends of the spring are fixed on the push plate 105 and the straightening plate 104. In this way, when the push plate 105 moves downward, the spring will be compressed to provide an upward reaction force, thereby achieving the purpose of straightening the wire. Through the design of the positioning arc-shaped plate 103 and the straightening plate 104, it is ensured that a section of the wire inside the current transformer body 102 always maintains a straight state, thereby significantly reducing the influence of the wire on current conduction. Through accurate pressure application, each part of the wire can be uniformly supported, avoiding local current overload or signal attenuation. In addition, maintaining the straightness of the wire also helps to reduce the influence of electromagnetic interference and ensure the stability of the measurement data. Through effective fixing and straightening design, the current transformer can not only improve the accuracy of measurement, but also maintain reliable performance under various working conditions, solving the defects of the fixing device relying on mechanical connection in the prior art, such as straps and screws, which may cause the wire to loosen, fatigue or damage. The technical scheme of the application effectively improves the performance of the current transformer under various working conditions, and provides a more accurate solution for power monitoring.

[0042] As a further of the utility model further, the positioning part includes the support 200 connected in the detection shell 100, the support 200 is rotationally connected with the threaded pipe 201, the threaded pipe 201 is threadedly connected with the first lead screw 202 slidingly connected with the detection shell 100, and the first lead screw 202 extends to the detection cavity 107 and is connected with the positioning arc-shaped plate 103;

[0043] By setting the threaded pipe 201, in application, rotating the threaded pipe 201 can move the first lead screw 202 through the force of the thread, can drive the positioning arc-shaped plate 103 to move to the center axis of the detection cavity 107, so that the circuit line can be accurately aligned and fixed in the predetermined position. This adjustment mode not only improves the flexibility of operation, but also can quickly adapt to different specifications of the line in different application scenarios, improves the versatility and practicality of the equipment.

[0044] As a further of the utility model further, the positioning component still includes first gear 203 that rotates and connects in detection housing 100, one side of first gear 203 is connected with second gear 204, and third gear 205 that meshes with second gear 204 is connected on threaded pipe 201;

[0045] By setting the first gear 203, in application, the first gear 203 can be rotated, and the rotation of the first gear 203 can rotate the threaded pipe 201 through the second gear 204 and the third gear 205, so that the plurality of threaded pipes 201 on the support 200 can be rotated synchronously. This design realizes accurate and consistent adjustment of the positioning arc-shaped plate 103. The advantage of this structure is that it can ensure that the plurality of positioning arc-shaped plates 103 move simultaneously to the center axis of the detection cavity 107, so that the circuit line can be better aligned when fixed. This synchronous movement greatly improves the operation efficiency and avoids the deviation caused by individual adjustment.

[0046] As a further of the utility model further, the detection cavity 107 is connected with a limiting rod 300, the straightening plate 104 is slidingly connected to the limiting rod 300, the push plate 105 is slidingly connected to the straightening plate 104, and the detection housing 100 is further connected with a connecting frame 301, the connecting frame 301 is rotatably connected with a second lead screw 302 that is threadedly connected with the straightening plate 104;

[0047] By setting the limiting rod 300, the movement range of the straightening plate 104 can be effectively limited. In application, the second lead screw 302 can be rotated synchronously when the first gear 203 is rotated, so as to conveniently adjust the position of the straightening plate 104. When the straightening plate 104 moves downward, the push plate 105 can contact the line. When the plurality of positioning arc-shaped plates 103 contact and press the line, the straightening plate 104 continues to move, so that the push plate 105 can press the line through the elastic member 106, thereby ensuring that the line is in a straightened state. The setting of the elastic member 106 ensures that the line can be straightened and will not be excessively folded or bent, reducing the change of resistance or impedance caused by excessive unevenness of the line, and ensuring stable conduction of the current.

[0048] Further, the first gear 203 is connected with a fourth gear 303 on one side, the second screw rod 302 is connected with a fifth gear 304 engaged with the fourth gear 303, a plurality of clamping grooves 305 are arranged on the outer wall of the threaded pipe 201, a plurality of spring rods 306 are connected with the inner wall of the third gear 205, and the end of the spring rod 306 matched with the clamping groove 305 is semispherical.

[0049] By arranging the spring rod 306, the spring rod 306 and the clamping groove 305 can form a certain friction force after being matched, and when the first gear 203, the second gear 204 and the third gear 205 rotate, the threaded pipe 201 can be rotated through the friction force matched between the spring rod 306 and the clamping groove 305, so as to move the first screw rod 202 downward, and when the positioning arc-shaped plate 103 on the first screw rod 202 contacts the line, resistance is generated, at this time, the friction force between the spring rod 306 and the clamping groove 305 can be overcome, and the two are separated, the third gear 205 idles on the threaded pipe 201, and since the first gear 203 continues to rotate, the straightening plate 104 can be moved through the second screw rod 302, so that the line can be straightened immediately after being fixed, thereby improving the response speed and operation efficiency of the whole system, and in addition, the friction force matched between the spring rod 306 and the clamping groove 305 can effectively prevent the line from being excessively pressed by the positioning arc-shaped plate 103. This design ensures that the line can be moderately supported when pressure is applied, and prevents the line from being damaged or deformed due to excessive pressure.

[0050] Further, the detection shell 100 is rotatably connected with a rotating shaft 307, and the rotating shaft 307 is connected with a sixth gear 308 engaged with the first gear 203.

[0051] By arranging the rotating shaft 307, the rotating shaft 307 can be rotated in application, and the rotation of the rotating shaft 307 can rotate the two first gears 203 on the detection shell 100 through the sixth gear 308, so as to realize synchronous operation of the components in the two detection cavities 107. This design ensures that the components in the two detection cavities 107 can work coordinately and realize precise synchronous operation.

[0052] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for current transformer detection, characterized by, The utility model relates to a current transformer, including: A detection shell has a detection cavity and two positioning cavities, the detection cavity is between the two positioning cavities; A current transformer body is arranged in the detection cavity; A plurality of positioning arc plates are arranged in the positioning cavities; A straightening plate is arranged in the positioning cavity, a push plate is slidably connected to the straightening plate, and an elastic member is arranged between the push plate and the straightening plate; A positioning component is arranged between the detection shell and the positioning arc plate for synchronously moving a plurality of positioning arc plates, and the plurality of positioning arc plates move towards the central axis of the positioning cavity; Wherein, the positioning component can also synchronously move the straightening plate while moving the positioning arc plate, and the straightening plate can continue to move when the positioning arc plate moves to the preset position.

2. The auxiliary equipment for current transformer detection according to claim 1, characterized in that, The positioning component includes a bracket connected to the detection shell, a threaded tube is rotatably connected to the bracket, a first lead screw is threadedly connected to the threaded tube and slidably connected to the detection shell, and the first lead screw extends into the detection cavity and is connected to the positioning arc plate.

3. The auxiliary equipment for current transformer detection according to claim 2, characterized in that, The positioning component further includes a first gear rotatably connected to the detection shell, a second gear is connected to one side of the first gear, and a third gear is connected to the threaded tube and engaged with the second gear.

4. The auxiliary equipment for detecting a current transformer according to claim 3, characterized in that, A limiting rod is connected in the detection cavity, the straightening plate is slidably connected to the limiting rod, the push plate is slidably connected to the straightening plate, a connecting frame is further connected in the detection shell, a second lead screw is threadedly connected to the straightening plate and rotatably connected to the connecting frame.

5. The auxiliary equipment for current transformer detection according to claim 4, characterized in that, One side of the first gear is connected to a fourth gear, a fifth gear is connected to the second lead screw and engaged with the fourth gear, a plurality of clamping grooves are formed in the outer wall of the threaded tube, a plurality of spring rods are connected to the inner wall of the third gear, one end of the spring rod matched with the clamping groove is semispherical, and the clamping groove is a semispherical groove.

6. The auxiliary equipment for detecting a current transformer according to claim 3, wherein A rotating shaft is rotatably connected to the detection shell, and a sixth gear is connected to the rotating shaft and engaged with the first gear.

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