Withstand voltage testing device for transformer

Abstract

The utility model relates to the technical field of testing devices, and discloses a transformer withstand voltage testing device, which comprises a testing device main body, a plurality of connecting sockets arranged on the testing device main body and a box cover hinged on the testing device main body, a cable winding unit is slidably connected into the containing groove and comprises a supporting frame, and two supporting rods are fixedly connected into the supporting frame. According to the testing device, the placing groove is formed in the testing device main body, the cable winding unit slides in the placing groove, a plurality of cables used for being connected with the socket and the transformer are wound on the cable winding unit and placed in the placing groove to be stored, when the cables need to be used, the cable winding unit is pulled out of the placing groove, and the cable winding unit is pulled out of the placing groove. And the cable can be used after being wound out of the cable winding unit, so that the cable can be conveniently stored and unwound, meanwhile, the cable can be conveniently stored and cannot be lost, the cable is prevented from being knotted, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test device technical field, concretely is a transformer withstand voltage test device. BACKGROUND

[0002] With people's increasingly fast development life demand and scientific and technological progress, transformer is the principle of electromagnetic induction to change the alternating voltage device, main component is primary coil, secondary coil and core (magnetic core), main function has: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer) etc. Transformer needs through withstand voltage test device to carry out withstand voltage test when using, detects whether transformer's insulation condition and electrical performance reach the standard, detects whether transformer exists insulation defect or potential failure.

[0003] The prior art such as the patent with the publication number CN218158193U discloses a transformer power frequency withstand voltage test device, including test device body, the middle position of the upper end surface of test device body is equipped with the mounting groove, the inside fixed mounting of mounting groove is equipped with operating panel, the four end angles of the outer surface of operating panel are equipped with a fixed groove, the middle position of the lower end inner wall of fixed groove is equipped with the mouth, the other end of mouth extends to the outer surface of operating panel, the inside of mouth is equipped with the fixed head fixedly connected between the inner wall of mounting groove, the both sides of the outer surface of fixed head are equipped with a connecting groove, the other end of two connecting grooves extends to the inner wall of spring groove in the same inside fixed head, the inside of spring groove is equipped with spring A, the both ends of spring A are connected with a limit plate, the other end surface of limit plate is fixedly equipped with rectangular fixed block. Through the transformer power frequency withstand voltage test device of the utility model, it can be more conveniently repaired.

[0004] The prior art still has the following problems:

[0005] The test device in the above prior art needs to be connected to the transformer through a cable during actual use, and then the withstand voltage of the transformer is tested using the test device. However, the cable is arranged outside the test device during actual use, which leads to the need to carry the cable separately when testing the transformer outdoors. The separately arranged cable is prone to loss, knotting and other phenomena, and is not convenient to use. Therefore, a transformer withstand voltage test device is proposed. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides a transformer withstand voltage test device, which is convenient for connecting and testing with the transformer using a cable and is convenient for storing the cable.

[0007] To achieve the above object, the utility model provides the following technical scheme: a transformer withstand voltage testing device, including testing device main part and multiple connecting jacks of setting on testing device main part and hinged on the box cover of testing device main part, the upper surface of testing device main part is equipped with the placing groove, the sliding connection of cable winding unit is achieved in the placing groove, the cable winding unit includes the support frame, two support rods are fixedly connected in the support frame, the rotation is connected with the shaft pipe between two support rods, the outer wall of shaft pipe is fixedly connected with two baffle plates, multiple cables for connecting transformer and jack are wound on the outer wall of shaft pipe.

[0008] Preferably, the cable winding unit further comprises a first perforation and a second perforation opened on the outer wall of the shaft pipe, the first perforation is located between the two baffle plates, the first perforation is located between one of the baffle plates and its adjacent support rod, and one end of the multiple cables for connecting the transformer and the jack is sequentially threaded through the first perforation and the second perforation and wound on the outer wall of the shaft pipe.

[0009] Preferably, the inner wall of the placing groove is provided with a clearance groove at both ends, and the two clearance grooves are each provided with an elastic clamping strip, the outer wall of the lower end of the support frame is provided with a first clamping groove matched with the elastic clamping strip, and the elastic clamping strip is movably clamped with the first clamping groove.

[0010] Preferably, the outer wall of the upper end of the support frame is provided with a second clamping groove matched with the elastic clamping strip, and the elastic clamping strip is movably clamped with the second clamping groove.

[0011] Preferably, the outer wall of one of the baffle plates close to the jack is fixedly connected with an arc-shaped strip, the inner wall of the arc-shaped strip is fixedly connected with multiple plug-in sleeves, and the terminals of one end of the multiple cables for connecting the transformer and the jack are movably plugged into the multiple plug-in sleeves.

[0012] Preferably, the outer wall of the baffle plate close to the testing device main body is fixedly connected with multiple force rods, and the length of the force rods is less than the distance between the baffle plate and the adjacent support rod.

[0013] Preferably, the cable winding unit further comprises a wire hole opened on the upper surface of the support frame, one end of the multiple cables for connecting the transformer and the jack is threaded through the wire hole, and the wire hole guides the winding of the multiple cables.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model discloses a placing groove is opened on the testing device main part, and the cable winding unit is slidably arranged in the placing groove, the multiple cables for connecting the jack and the transformer are wound on the cable winding unit and are placed in the placing groove for storage, when the cable is needed, the cable winding unit is pulled out from the placing groove, and the cable is wound out from the cable winding unit and can be used, which is convenient for storage and laying of the cable, facilitates storage of the cable, avoids knotting of the cable and improves practicability.

[0016] 2、The utility model discloses a cable one end passes through the first perforation and the second perforation on the axle pipe, and further makes the cable when taking up and paying off the wire, and one end follows rotation, and can pay off the wire according to actual use length, and two ends are connected with the socket and the transformer respectively, and is convenient to use.

[0017] Other features and advantages of the present utility model will be set forth in the following description of the utility model, and, in part will become apparent from the description, or be learned by practicing the present utility model. The purpose and other advantages of the present utility model can be realized and obtained by the structure indicated in the description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram of the utility model;

[0019] Figure 2 It is cross section structure schematic diagram of test device main part of the utility model;

[0020] Figure 3 It is Figure 2 It is the local enlarged view of A in the middle;

[0021] Figure 4 It is cable winding unit structure schematic diagram of the utility model;

[0022] Figure 5 It is cross section structure schematic diagram of the utility model support frame.

[0023] In the drawing: 1, test device main part;2, socket;3, place groove;4, cable winding unit;41, support frame;42, support rod;43, axle pipe;44, baffle;45, force bar;46, first perforation;47, second perforation;48, wire hole;5, let go of the slot;6, elastic clamping strip;7, first clamping groove;8, second clamping groove;9, arc strip;10, plug-in sleeve;11, box cover. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely 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, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the scope of protection of the utility model.

[0025] Please refer to Figures 1-5The transformer withstand voltage testing device of the embodiment comprises a testing device main body 1, a plurality of connecting sockets 2 arranged on the testing device main body 1, and a box cover 11 hinged to the testing device main body 1, an upper surface of the testing device main body 1 is provided with a placing groove 3, a cable winding unit 4 is slidably connected in the placing groove 3, the cable winding unit 4 comprises a support frame 41, two support rods 42 are fixedly connected in the support frame 41, an axle tube 43 is rotatably connected between the two support rods 42, two baffles 44 are fixedly connected to the outer wall of the axle tube 43, and a plurality of cables for connecting the transformer and the sockets 2 are wound outside the axle tube 43.

[0026] As Figure 1 , 2 , 4, 5, the transformer withstand voltage testing device in the utility model is similar in structure to the existing transformer withstand voltage testing device, such as the transformer power frequency withstand voltage testing device disclosed in the patent with the publication number CN218158193U, the main improvement point of the utility model is that the cable is convenient to use for connecting and testing the transformer and is convenient to store; in use, the cable is wound outside the axle tube 43, the two support rods 42 support the axle tube 43, the axle tube 43 winds the cable by rotating the baffle 44, the baffle 44 blocks the cable, the cable is wound and stored outside the axle tube 43, the support frame 41 is inserted into the placing groove 3, and then the cable is stored, when the testing device main body 1 is needed to test the transformer, the support frame 41 is pulled up, the support frame 41 takes out the axle tube 43 and the baffle 44 from the placing groove 3 through the support rod 42, and then the cable is moved out of the placing groove 3, at this time, the baffle 44 can be rotated, the axle tube 43 is rotated, and then the plurality of cables are all paid out, one end of the cable is inserted into the socket 2, and the other end is connected to the transformer, at this time, the transformer can be tested for the withstand voltage by the testing device main body 1, the overall structure is simple, the cable is convenient to wind and unwind, the cable is not lost when stored, the cable is also prevented from being knotted, and the practicability is improved.

[0027] As Figure 5As shown, the cable winding unit 4 further comprises a first through hole 46 and a second through hole 47 formed in the outer wall of the shaft tube 43, the first through hole 46 is located between the two baffles 44, and the first through hole 46 is located between one of the baffles 44 and its adjacent support rod 42, one end of the plurality of cables connected with the transformer and the socket 2 is sequentially threaded through the first through hole 46 and the second through hole 47 and wound on the outer wall of the shaft tube 43; the end of the cable is threaded into the shaft tube 43 through the first through hole 46, and is threaded out of the shaft tube 43 through the second through hole 47, a part of the length of the end of the cable is wound on the outer wall of the shaft tube 43, and when the shaft tube 43 rotates to wind and unwind the cable, the remaining end of the cable rotates with the shaft tube 43, and the other end is unwound, after the cable is unwound, the end wound on the outer wall of the shaft tube 43 is loosened from the socket 2, and the unwound end is connected with the transformer, without completely unwinding the cable from the outer wall of the shaft tube 43, the two ends of the cable can be connected respectively, which is suitable for different unwinding distances and facilitates winding and unwinding the cable.

[0028] As shown in Figures 2-4 , the inner wall of the placing groove 3 is provided with a displacement slot 5 at both ends, and the two displacement slots 5 are provided with elastic clamping strips 6, the outer wall of the lower end of the support frame 41 is provided with a first clamping groove 7 matched with the elastic clamping strip 6, and the elastic clamping strip 6 is movably clamped in the first clamping groove 7; when unwinding is needed, the support frame 41 is lifted, the support frame 41 slides with the placing groove 3, the support frame 41 extrudes the elastic clamping strip 6, and the elastic clamping strip 6 is completely located in the displacement slot 5 until the first clamping groove 7 moves out of the elastic clamping strip 6, at this time, one end of the elastic clamping strip 6 is inserted into the first clamping groove 7 to limit the support frame 41, and part of the support frame 41 is exposed outside the placing groove 3 and cannot slide into the placing groove 3 again, so that the cable can be unwound, and when the cable is stored, a downward pressure is applied to the support frame 41, so that the support frame 41 extrudes the elastic clamping strip 6 and deforms to completely move into the displacement slot 5, at this time, the support frame 41 can drive the cable to move into the placing groove 3 for storage, thereby improving the convenience of use.

[0029] As shown in Figures 2-4 , the outer wall of the upper end of the support frame 41 is provided with a second clamping groove 8 matched with the elastic clamping strip 6, and the elastic clamping strip 6 is movably clamped in the second clamping groove 8; when the bottom surface of the support frame 41 is in contact with the bottom surface of the placing groove 3 after being inserted into the placing groove 3, at this time, the elastic clamping strip 6 is clamped into the second clamping groove 8 to limit the support frame 41, thereby avoiding the support frame 41 from sliding into the placing groove 3 during transportation of the test device main body 1, and improving the stability.

[0030] As shown in Figure 4As shown, the outer wall of one of the baffles 44 close to the socket 2 is fixedly connected with an arc-shaped strip 9, the inner wall of the arc-shaped strip 9 is fixedly connected with a plurality of plug-in sleeves 10, and the terminals of the one end of the plurality of cables connected with the transformer and the socket 2 are respectively movably plugged into the plurality of plug-in sleeves 10 outside; the terminals of the plurality of cables passing out of the second through hole 47 are plugged into the plug-in sleeves 10 outside, thereby limiting the cables, avoiding that the cables are loose at the end when the shaft tube 43 rotates, are clamped between the baffle 44 and the support rod 42, and affect the winding and unwinding of the cables by the rotation of the shaft tube 43.

[0031] As shown in the drawings, Figure 2 As shown, the outer wall of the baffle 44 outside the test device main body 1 is fixedly connected with a plurality of force rods 45, the length of the force rod 45 is less than the distance between the baffle 44 and the adjacent support rod 42; the baffle 44 is rotated by using the force rod 45, thereby winding and unwinding the cables by the shaft tube 43, which is convenient to bear force and is convenient to use.

[0032] As shown in the drawings, Figure 5 As shown, the cable winding unit 4 further comprises a wire hole 48 opened on the upper surface of the support frame 41, the one end of the plurality of cables connected with the transformer and the socket 2 passes through the wire hole 48, and the wire hole 48 guides the winding of the plurality of cables; the unwinding end of the cable passes through the wire hole 48, so that the wire hole 48 can guide the cable when winding the cable, thereby winding the cable on the outer wall of the shaft tube 43 and between the two baffles 44, and improving the convenience of use.

[0033] The step is implemented in the embodiment: in use, one end of a plurality of cables for connecting the transformer and the socket 2 is inserted into the shaft tube 43 through the first through hole 46, and is led out of the shaft tube 43 through the second through hole 47, a part of the length of the end of the cable is wound outside the shaft tube 43, the terminal of the end of the cable is inserted into the insertion sleeve 10, the end of the cable is limited, the other end of the cable is wound outside the shaft tube 43 and is located between the two baffles 44, and the end of the cable is led out of the wire hole 48; when the cable needs to be used to electrically connect the transformer and the socket 2, the support frame 41 is lifted, the second clamping groove 8 is separated from the elastic clamping strip 6, and the first clamping groove 7 corresponds to the elastic clamping strip 6, at this time, the elastic clamping strip 6 is inserted into the first clamping groove 7 to limit and support the inner support frame 41, at this time, the force rod 45 is rotated and the one end of the cable led through the wire hole 48 is pulled, the force rod 45 drives the baffle 44 and the shaft tube 43 to rotate, the one end of the cable is unwound, the other end of the cable inserted into the insertion sleeve 10 is rotated with the shaft tube 43, when the unwound cable is long enough, the terminal of the cable inserted into the insertion sleeve 10 is separated, and the end of the cable is unwound from the shaft tube 43 or is unwound from the shaft tube 43 by rotating the shaft tube 43, then the end of the cable is inserted into the socket 2, and the other end of the cable is connected with the transformer, at this time, the withstand voltage of the transformer can be tested by the test device main body 1; when the cable needs to be stored, the one end of the cable is separated from the socket 2, the end is wound on the shaft tube 43, the terminal of the end is sleeved on the insertion sleeve 10, the other end of the cable is separated from the transformer, and the shaft tube 43 is rotated again, the shaft tube 43 winds the cable, the wire hole 48 guides the cable, the wound cable is located between the two baffles 44, and the cable is completely wound back, at this time, the support frame 41 is pressed downwards, then the support frame 41 extrudes the elastic clamping strip 6, the elastic clamping strip 6 is deformed and is completely moved into the accommodation groove 5, at this time, the support frame 41 drives the cable to move into the placing groove 3, when the bottom surface of the support frame 41 contacts the bottom surface of the placing groove 3, at this time, the elastic clamping strip 6 is clamped into the second clamping groove 8, and the support frame 41 is limited.

[0034] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or changes can be made on the basis of the above description. Here, all the embodiments are not enumerated. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A transformer withstand voltage testing device comprising a testing device main body (1) and a plurality of connection sockets (2) provided on the testing device main body (1) and a box cover (11) hinged to the testing device main body (1), characterized in that, The upper surface of the test device body (1) is provided with a placing groove (3), and the cable winding unit (4) is slidably connected in the placing groove (3). The cable winding unit (4) comprises a support frame (41), two support rods (42) are fixedly connected inside the support frame (41), an axle pipe (43) is rotatably connected between the two support rods (42), two baffles (44) are fixedly connected to the outer wall of the axle pipe (43), and the multiple cables for connecting the transformer and the socket (2) are wound outside the axle pipe (43).

2. The transformer voltage withstand test device of claim 1, wherein, The cable winding unit (4) further comprises a first perforation (46) and a second perforation (47) formed in the outer wall of the axle pipe (43). The first perforation (46) is located between the two baffles (44), and the first perforation (46) is located between one of the baffles (44) and its adjacent support rod (42). One end of the multiple cables for connecting the transformer and the socket (2) is sequentially threaded through the first perforation (46) and the second perforation (47) and wound outside the axle pipe (43).

3. The transformer voltage withstand test device of claim 1, wherein, The inner wall of the placing groove (3) is provided with a clearance groove (5) at both ends, and the two clearance grooves (5) are provided with elastic clamping strips (6). The outer wall of the lower end of the support frame (41) is provided with a first clamping groove (7) matched with the elastic clamping strip (6), and the elastic clamping strip (6) is movably clamped with the first clamping groove (7).

4. The transformer voltage withstand test device of claim 3, wherein, The outer wall of the upper end of the support frame (41) is provided with a second clamping groove (8) matched with the elastic clamping strip (6), and the elastic clamping strip (6) is movably clamped with the second clamping groove (8).

5. The transformer voltage withstand test device of claim 2, wherein, The outer wall of one of the baffles (44) near the socket (2) is fixedly connected with an arc-shaped strip (9), the inner wall of the arc-shaped strip (9) is fixedly connected with a plurality of plug-in sleeves (10), and one end of the multiple cables for connecting the transformer and the socket (2) is movably plugged into the plurality of plug-in sleeves (10).

6. The transformer voltage withstand test device of claim 1, wherein, The outer wall of the baffle (44) near the test device body (1) is fixedly connected with a plurality of stress rods (45), and the length of the stress rod (45) is less than the distance between the baffle (44) and the adjacent support rod (42).

7. The transformer voltage withstand test device of claim 1, wherein, The cable winding unit (4) further comprises a wire hole (48) formed in the upper surface of the support frame (41), one end of the multiple cables for connecting the transformer and the socket (2) is threaded through the wire hole (48), and the wire hole (48) guides the winding of the multiple cables.

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