CN203849290U - Wire box special for voltage-withstanding test - Google Patents

Abstract

The utility model discloses a special line box for a pressure test, which relates to a line box. The utility model consists of a detachable box body, a support shaft is installed in the center of the box body, a winding wheel rotating around the support shaft is installed on the support shaft, and three lines of equal width are arranged on the winding wheel for placing wires. Slot; one end surface of the winding wheel is provided with a plurality of positioning holes, and the other end surface is equipped with a handle; a positioning pin matching the round hole is installed on the box body; there are also three outlets on the box body . Advantages: Scalable and positioning special short wiring, can easily carry out the short connection operation of the withstand voltage test, effectively shorten the operating time of the test personnel, and improve work efficiency; Security Risk.

Description

Special wire box for withstand voltage test

technical field

The utility model relates to a wire box, in particular to a special wire box for withstand voltage test, which is especially suitable for electric

In the withstand voltage test of various electrical equipment in the force system.

Background technique

In recent years, with the continuous expansion of the scale of the power grid, the power system has developed towards high voltage, large capacity, and the Internet. As a necessary means to ensure the healthy operation of power equipment, maintenance is related to the utilization rate, accident rate, service life, human, material and financial resources of equipment. Consumption, as well as the overall benefits of power companies and many other issues. As the vanguard of maintenance, the electrical test shoulders an increasingly heavy mission, and the withstand voltage test occupies a pivotal position in the high-voltage electrical test. Every time the pressure test is carried out, the team needs to use iron wire as an auxiliary tool. During the on-site work, three major shortcomings were found: First, the short-circuit wires were temporarily drawn from the wire rods at the test site by estimation, which was very random, which resulted in too long preparation time before the test. Cleaning up the site is slow, and the test time is often delayed; second, the iron wire is easy to rust and entangle and knot, resulting in serious littering, and cannot be effectively placed and recycled after use, which does not meet the requirements of lean production , and it is easy to cause poor contact, which is easy to affect the test results; third: a little carelessness after the test may leave the short circuit on the equipment.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a special wire box for pressure test, which can be stretched and positioned for short wiring, and can easily perform short circuit operation for pressure test, effectively shortening the operating time of test personnel and improving work efficiency. Efficiency; at the same time, it avoids the potential safety hazard caused by the easy entanglement, knotting and loss of the iron wire.

Reduced security risks. the

The utility model is realized by the following technical scheme: a special wire box for pressure resistance test, including a detachable box body, a support shaft is installed in the center of the box body, and a winding wire rotating around the support shaft is installed on the support shaft There are three wire slots of equal width on the reel for placing wires; one end face of the reel is provided with a plurality of positioning holes, and a handle is installed on the other end face of the reel; The positioning pin matched with the round hole; there are also three outlets on the box.

The beneficial effects of the utility model are: according to the principle of scalability, the test personnel can accurately and firmly complete the short-circuit operation quickly, and there is no need to intercept the iron wire by estimation before the test, and the process of missing and winding the iron wire is also avoided after the test, so that it can effectively The preparation time before the test and the cleaning time after the test are shortened, the work efficiency is improved, the labor intensity is reduced, and the reliability of the test is improved. At the same time, it avoids the phenomenon that the iron wire is always easily deformed, entangled and knotted, and cannot be recycled and reused multiple times, and meets the different requirements of different voltage levels and different electrical equipment for the length of the short wire, so that the utilization rate of the retractable short wire is greatly improved. Improvement, popularization, greatly saves the expense of short-circuit lines, and improves economic benefits.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is a schematic diagram of the structure of the supporting base;

Fig. 4 is the left view of Fig. 3;

Figure 5 is a top view of the support base;

Fig. 6 is the left side view of shell;

Fig. 7 is the right view of shell;

Fig. 8 is the front view of shell;

Fig. 9 is a schematic diagram of the support shaft structure;

Fig. 10 is a kind of structural representation of reel;

Fig. 11 is the left view of Fig. 10;

Fig. 12 is a structural schematic diagram of positioning pins;

Fig. 13 is another structural schematic view of the reel;

Fig. 14 is a left side view of Fig. 13 .

Detailed ways

As shown in Figures 1 and 2, a special wire box for pressure test has a detachable box body 1, a support shaft 3 is installed in the center of the box body 1, and a winding wheel that rotates around the support shaft is installed on the support shaft 3 2. The reel 2 is ring-shaped, and there are three wire grooves 21 of equal width for placing wires on the reel 2; a plurality of positioning holes 22 are correspondingly provided on the end surface of one side of the reel, and the other A handle 6 is installed on the side end surface; a positioning pin 5 matched with the round hole is installed on the box body 1 . The box body is also provided with three outlets 7 .

As shown in Figures 3-5, the box body is composed of a support base 11 and a shell 12 matched with it; the support base 11 is "L" shaped, and a There are a plurality of threaded holes 6, and the shell is installed on the support base with screws.

The support shaft 3 is installed in the center of the riser of the "L"-shaped support base 11, and the positioning pin is installed under the riser of the support base 11 through the spring 4. The structure of the locating pin is shown in Figure 12, through the locating pin and the locating hole, the positioning of the length of the U, V, W short wiring is realized.

Wherein, the support base 11 is made of 6mm stainless steel plate, with a height of 319mm, a width of 180mm, and a side thickness of 16mm.

As shown in Figures 6-8, the outlets 7 are arranged symmetrically on both sides of the casing.

The section of the reel 2 is circular (as shown in Figures 10 and 11 ) or octagonal (as shown in Figures 13 and 14 ). The width of the wire groove 21 is 35mm. Eight positioning holes 22 are uniformly arranged on one side end surface of the reel.

As shown in FIG. 1 and FIG. 9 , the support shaft 3 realizes the support and rotation of the reel through the interference fit of four bearings.

The utility model is designed in two parts, one part is the support shaft and the winding wheel and the fixed main shaft, and the other part is the detachable lower box to complete the replacement of the short-circuit line and the fault maintenance. The rotation of the reel is driven by the drive of the handle. There are three slots for the wires on the reel, which can effectively avoid the mutual crosstalk of the U, V, and W three-phase wires. Because one end of the three-phase wires is fixed on the reel The same place, so it can ensure that the wires of the outgoing line and the receiving line are equal in length. The positioning of the length of the U, V and W short wires can be realized through the use of 8 positioning holes and positioning pins. The short wire is made of soft copper, which avoids the trouble of bending and deformation after use and is not easy to recycle. Equipped with alligator clips of appropriate size, it can be reliably connected with electrical equipment to ensure the accuracy of the test.

For the convenience of operation, a crocodile clip is installed on the joint of the short wire coming out from the three outlets. When carrying out the short-circuit operation of the vacuum circuit breaker withstand voltage test, the tester first pulls the positioning pin, shakes the handle to release the wire. Another tester clamps the stretched short wire on the U, V, and W three-phase contacts of the circuit breaker with alligator clips. After the short-circuit operation, close the positioning pin, fix the short wire, and prohibit stretching, and it is completed. The entire short circuit operation.

Claims (7)

1. A wire box for withstand voltage test, characterized in that it includes a detachable box body (1), a support shaft (3) is installed in the center of the box body (1), and a support shaft (3) is installed on the support shaft (3). The reel (2) that rotates around the support shaft has three wire grooves 21 of equal width for placing wires on the reel (2); one end surface of the reel is correspondingly provided with a plurality of positioning holes (22) , a handle (6) is installed on the end surface of the other side; a positioning pin (5) matching the round hole is installed on the box body (1); and three outlets (7) are also provided on the box body. 2. The special wire box for pressure test according to claim 1, characterized in that: the box body is composed of a support base (11) and a matching shell (12); the support base (11) is "L" type is provided with a plurality of threaded holes (6) at the edge joints of the support base (11) and the shell (12), and the shell is installed on the support base with screws. 3. The wire box for pressure test according to claim 2, characterized in that: the support shaft (3) is installed in the center of the vertical plate of the "L"-shaped support base (11); the positioning pin passes through The spring is installed under the vertical plate of the support base (11); the outlets (7) are arranged symmetrically on both sides of the housing. 4. The special wire box for withstand voltage test according to claim 1, characterized in that: the width of the wire groove is 35mm. 5. The wire box for pressure test according to claim 1, characterized in that 8 positioning holes (22) are uniformly provided on one end surface of the winding wheel. 6. The wire box for pressure test according to claim 1, characterized in that: said support shaft realizes the support and rotation of the reel through the interference fit of four bearings. 7. The wire box for pressure test according to any one of claims 1-6, characterized in that: the section of the reel (2) is circular or octagonal.