CN202453374U - Wiring bolt facilitating secondary test of mutual inductor - Google Patents

Abstract

A wiring bolt with simple operation, convenient use, safety and reliability, good test effect and convenient for secondary testing of transformers, including a nut, a stud is connected to the bottom of the nut, the nut and the stud are integrally structured, and the upper part of the nut is opened. There is an insertion slot; the outer cover of the nut is provided with an insulating sleeve; the opening of the insertion slot faces upward. After adopting the utility model to fix the secondary circuit of the transformer, when performing the secondary test of the transformer, the internal tension test plug of the test tool can be directly inserted into the insertion groove of the wiring bolt described in the utility model, and the utility model is convenient It forms a good electrical path with the internal tension test plug line of the test tool and the secondary circuit of the transformer, thus forming a reliable test circuit. The entire test ring saves the use of test clips, thus fundamentally solving many problems caused by the test clips. Therefore, the utility model has the beneficial effects of simple operation, convenient use, safety and reliability, and good test effect.

Description

A connection bolt for secondary testing of transformer

technical field

The utility model relates to a power equipment element, in particular to a connection bolt for secondary testing of a transformer. the

Background technique

At present, ordinary bolts are generally used to fix the secondary circuit of the transformer, which has no fundamental difference in structure from the bolts used in our daily life. This kind of bolt can meet the requirements of fixing the secondary circuit of the transformer. Since the transformer is an important component connecting the primary system and the secondary system, according to the requirements of national standards and test procedures, the power sector should conduct some characteristic tests on the transformer every year to ensure that the equipment operates well. During the secondary test of the transformer, the test tool is inserted into the hole at the end of the test clip through the internal tension test plug, and then the test clip is clamped on the bolt to form a power circuit with the test element; that is to say, the bolt not only fixes the circuit , but also participate in the test. Since most of the transformers are installed in a closed switch cabinet, the installation space is relatively compact, and the test clip takes up a lot of space, making it impossible to connect normally in a small space. In the process of using the test clip to test, in addition to increasing the difficulty of the operator's work, it is also easy to cause poor contact, resulting in measurement errors and even test failures. In addition, in a narrow space, since the test clips are exposed to conduction, these parts are easy to contact each other and cause a test short circuit, which will cause test results to be wrong and lead to test failure. the

Contents of the invention

The purpose of the utility model is to provide a connection bolt which is easy to operate, convenient to use, safe and reliable, and has good test effect, which is convenient for the secondary test of the transformer. the

In order to achieve the above object, the technical solution adopted by the utility model is:

The utility model relates to a wiring bolt convenient for the secondary test of a transformer, which includes a nut, a stud is connected under the nut, and the nut and the stud are integrally structured, and the feature is that the nut is provided with an insertion slot.

According to the above-mentioned terminal bolt for secondary testing of the transformer, it is characterized in that: the nut is covered with an insulating sleeve. the

According to the terminal bolt for secondary testing of the transformer, it is characterized in that: the opening of the insertion slot faces upward. the

After adopting the utility model to fix the secondary circuit of the transformer, when performing the secondary test of the transformer, the internal tension test plug of the test tool can be directly inserted into the insertion groove of the wiring bolt described in the utility model, and the utility model is convenient It forms a good electrical path with the internal tension test plug line of the test tool and the secondary circuit of the transformer, thus forming a reliable test circuit. The entire test ring saves the use of test clips, thereby fundamentally solving many problems caused by the test clips. Therefore, the utility model has the beneficial effects of simple operation, convenient use, safety and reliability, and good test effect. the

Description of drawings

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

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

Fig. 3 is the structural representation of stud and nut among Fig. 1;

Fig. 4 is a reference diagram of the use state of the unconnected internal tension test plug line of the utility model;

Fig. 5 is a reference diagram of the use state of the utility model after connecting the inner tension test plug line.

In the attached picture:

1. Nut; 2. Insertion slot; 3. Insulation sleeve; 4. Stud; 5. Inner tension test plug wire.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

A wiring bolt for secondary testing of transformers, as shown in Figures 1 to 5, includes a nut 1, a stud 4 is connected to the bottom of the nut 1, the nut 1 and the stud 4 are integrally structured, and the nut 1 A socket slot 2 is provided on the top. In this embodiment, the nut 1 is covered with an insulating sheath 3, and the opening of the insertion slot 2 faces upward.

The above-described embodiments are only described to the preferred implementation of the utility model, and are not intended to limit the concept and scope of the utility model. Various modifications and improvements made in the new technical solution should fall within the scope of protection of the utility model, and the technical content claimed in the utility model has been fully recorded in the claims. the

The secondary wiring of the transformer adopts the bolt described in the utility model, which can not only meet the reliable physical performance required by the wiring, but also has an insertion slot matching the inner tension test plug line of the test tool, thereby eliminating the need for The use of test clips brings the problems of complicated wiring, easy fall off of test clips, poor contact, and easy contact between exposed conductive parts of test clips, resulting in test short circuits, which enables the test to be completed in a small space, and also saves test time and improves test efficiency. Success rate. the

The utility model is a "ten"-shaped copper bolt composed of three parts: a stud, a nut and an insulating sleeve. The stud part is the same as that of a normal bolt, but the thickness of the nut is different from that of an ordinary nut. The thickness of the cap is designed to be 15mm, and an insertion groove with a diameter of 4mm is vertically opened in the center of the nut, and the depth of the groove is 10mm, and the insulating sleeve is placed on the nut. Here it is the complete structure of the present utility model. the

The purpose of thickening the nut is to meet the needs of the depth of the insertion slot. The thickened nut and the insertion slot on the nut are the main parts used for testing. The size of the insertion groove is the same as the size of the hole groove at the end of the test clip, and the internal tension test plug of the test tool can be directly inserted into the insertion groove of the wiring bolt described in the utility model, because the stud and the nut are made of copper material Made of copper, and copper has the characteristics of good electrical conductivity, strong thermal conductivity, and large current carrying capacity, so the utility model can form a good electrical path with the internal tension test plug line of the test tool and the secondary line of the transformer, thereby forming a reliable the test loop. the

In the utility model, the insulating sleeve added on the nut is to make the exposed part of the bolt meet the insulation requirement of the electric element. the

It can be seen that the utility model actually saves the use of test clips in the test ring, thereby fundamentally solving the above-mentioned measurement error and test short circuit problems caused by the test clips. In addition, since there is no need to connect the test clip, the internal tension test plug wire is directly connected to the terminal bolt, which saves the wiring time of the test clip and greatly improves the test efficiency and success rate. the

The utility model relates to a power equipment component, which is mainly used for fixing the secondary circuit of a transformer and improving the working efficiency of the secondary circuit test of a voltage transformer. the

During the specific production, a hole with a diameter of 4 mm is vertically opened on the top of the nut as a socket, and the test line is inserted into the socket from the top, and the test line adopts an internal tension test plug, thereby changing the wiring mode of the test line , which facilitates testing and saves time. In order to facilitate the fastening of bolts, a "ten"-shaped strong slot is opened on the top of the nut, and an insulating sleeve is added to the extended part of the nut to avoid short-circuiting between the extended nut part and the wire. Since the nut part has an insertion slot that matches the internal tension test plug of the test tool, it can avoid the complicated wiring, easy to fall off, poor contact and test short circuit caused by the use of test clips. The problem enables the test to be completed in a narrow space, saves test time, improves the test success rate, and fundamentally solves the problem of transformer secondary test wiring. the

Claims (3)

1. a connection bolt of being convenient to the mutual inductor second test comprises nut (1), is connected with double-screw bolt (4) below the nut (1), and nut (1) is structure as a whole with double-screw bolt (4), it is characterized in that: have inserting groove (2) on the nut (1).

2. a kind of connection bolt of being convenient to the mutual inductor second test according to claim 1 is characterized in that: the outer insulation sleeve (3) that is set with of said nut (1).

3. a kind of connection bolt of being convenient to the mutual inductor second test according to claim 1 and 2 is characterized in that: said inserting groove (2) opening up.

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