CN205210227U - Transformer winding fault detector box - Google Patents

Abstract

The utility model discloses a transformer winding fault detector box body, which comprises an integrally formed box body body with an opening left on one side, a box cover and a partition plate 6 which are closed on the box body body and form a cavity with the box body body And the pulse main circuit housing 7; the partition is arranged in the main body of the box to separate the main body of the box into an upper space and a lower space; the main pulse circuit housing is arranged in the lower space. The outer surface of the box main body is provided with a conductive paint layer. The box structure of the utility model adopts an integrated structure, which is strong and firm, has good shielding performance, and can be beneficial to popularization and application.

Description

A transformer winding fault detector box

technical field

The utility model and a transformer winding fault detection instrument belong to the technical field of electric equipment detection, and in particular relate to a box body of a transformer winding fault detection instrument.

Background technique

The transformer plays the role of power conversion in the power system, so whether it can operate safely is the prerequisite for the stable power supply of the power system. However, the transformer is vulnerable to the impact of external faults such as short-circuit current caused by short-circuit faults during operation, and the transformer can operate normally in a slightly deformed state. However, during long-term operation, the transformer will be impacted by multiple short-circuit currents for a long time, causing cumulative deformation and increasing the risk of its outage. Therefore, live detection of winding operation status of coil equipment such as transformers and reactors is an effective method to detect internal winding faults in time, ensure the normal operation of equipment, and improve the reliability of power system operation. At present, the pulse frequency response method is an emerging method among the live detection methods applied to various coil devices. The key link of this method is the portable winding fault live detector, which can realize pulse signal output, response signal collection, and winding operation state analysis. Therefore, in order to ensure the safe and reliable operation of the device, it is very necessary to design a corresponding portable winding fault live detector box.

Utility model content

In view of this, the purpose of the utility model is to provide a transformer winding fault detector box.

In order to achieve the above purpose, the utility model provides the following technical solution, a transformer winding fault detector box, including an integrally formed box body with an opening on one side, a cover that is closed on the box body and forms a cavity with the box body Body cover, partition 6 and pulse main circuit housing 7; the partition is arranged in the box main body, and the box main body is divided into an upper space and a lower space; the pulse main circuit housing is arranged in in the lower space.

Further, the outer surface of the box main body is provided with a conductive paint layer.

Further, the outer surface of the case cover is provided with a conductive paint layer.

Further, a box handle 5 is provided on both sides of the box body.

Further, the pulse main circuit casing is a box with an open end, and the open end of the box is covered on the side wall of the box body to form a cavity; one side of the pulse main circuit casing is provided with an optical fiber The via hole 8 is provided with a pulse source main circuit output line via hole 10 on the side wall opposite to the side where the optical fiber via hole is located, and a high voltage DC power supply line is provided on the side wall adjacent to the side where the optical fiber via hole is located to supply the pulse main circuit Via 9.

Further, the separator is provided with high-voltage DC power supply and switching power supply line through holes 11, pulse main circuit signal output line through holes 12, control circuit board installation holes 13, optical fiber line through holes 14 and switching power supply installation holes 15.

Further, a conductive paint layer is provided on the outer side of the pulse main circuit housing.

Further, the top side of the box main body is provided with a power supply switch hole 1 , a USB-to-serial interface installation hole 2 and a BNC connector installation hole 3 .

The beneficial effects of the utility model are:

1. The utility model sets a conductive paint layer outside the main body of the box body, which greatly enhances the conductivity of the electrified detector;

2. The box structure of the utility model adopts an integrated structure, which is strong and firm, and has good shielding performance, which is beneficial to popularization and application.

Description of drawings

In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the utility model provides the following drawings for illustration:

Figure 1 is the overall structure diagram of the portable winding fault live detector box;

Figure 2 is an internal view of the overall structure of the portable winding fault live detector box;

Figure 3 is the pulse main circuit housing of the portable winding fault electrification detector;

Figure 4 is the partition board of the portable winding fault electrification detector box.

detailed description

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the portable winding fault live detector.

A transformer winding fault detector box, including a box body with an opening on one side, a box cover that is closed on the box body and forms a cavity with the box body, a partition 6, and a pulse main circuit casing 7; The separator is arranged in the main body of the box body, and divides the main body of the box body into an upper space and a lower space; the pulse main circuit casing is arranged in the lower space. The box size is 410*180*390(mm), and the box thickness is 3mm.

During installation, the portable live detector will include the following equipment: pulse main circuit, high-voltage DC power supply, charging resistor, control acquisition circuit, switching power supply, connectors, switches and other devices. Except for the top cover of the entire box structure, the other three sides are formed at one time, which ensures the firmness of the entire device. In addition, in order to improve the grounding performance and shielding effect of the equipment, a conductive paint layer containing copper is sprayed on the main body of the box. The conductive performance is very good, and the resistance value is about 0.2 ohms.

As shown in Figure 1, the power supply switch hole 1 is where the 200V mains connector is installed to supply power to the high-voltage DC power supply and the switching power supply. When installing, use M3 screws to fix it.

As shown in Figure 1, via hole 2 is where the USB-to-serial interface is installed, and a double-row 9-hole female USB connector can be used.

As shown in Figure 1, via hole 3 is used to install the signal output connector of the live detector and the BNC connector.

Combined with Figure 2 and Figure 4, the function of the partition is to isolate the high and low voltage side circuits of the live detector to avoid voltage interference from the high voltage side to the low voltage side. As shown in FIG. 4 , the four through holes 13 are for installing the control circuit board, and the installation position is on the upper side of the partition board, and are fixed by screws with a diameter of M4. As shown in Figure 4, the two through holes 15 are where the switching power supply is installed, and the installation position is the lower volume of the partition, which is fixed by screws with a diameter of M3. The high-voltage direct current power supply and the switching power supply wire pass through hole 11, and the size is M12. The pulse main circuit signal output line has a via hole 12, the size of which is M10. The optical fiber line via hole 14 realizes the control of the pulse circuit by the control circuit, and the size is M15.

Combined with Figure 2 and Figure 3, the size of the pulse main circuit shell is 180*180*60 (mm), and the pulse circuit is included in it to play a key shielding role. The shell is also sprayed with conductive paint. The pulse main circuit housing is a box with an open end, and the open end of the box is covered on the side wall of the main body of the box to form a cavity; one side of the pulse main circuit housing is provided with an optical fiber through hole 8, A pulse source main circuit output line via hole 10 is provided on the side wall opposite to the side where the fiber via hole is located, and a high voltage DC power supply line via hole 9 is provided on the side wall adjacent to the side where the fiber via hole is located.

Finally, it is noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.

Claims (8)

1. a transformer winding fault detector casing, is characterized in that: comprise one side leave opening integrated casing main body, be covered on the case lid, dividing plate (6) and the pulse main circuit housing (7) that casing main body are formed a cavity with casing main body; Described dividing plate is arranged in casing main body, and described casing body portion is divided into upper sheaf space and lower layer space; Described pulse main circuit housing is arranged in lower layer space.

2. transformer winding fault detector casing according to claim 1, is characterized in that: described casing body outer surface is provided with electro-conductive lacquer layer.

3. transformer winding fault detector casing according to claim 1 and 2, is characterized in that: described case lid outside surface is provided with electro-conductive lacquer layer.

4. transformer winding fault detector casing according to claim 1, is characterized in that: the both sides of described casing main body are respectively provided with a casing handle (5).

5. transformer winding fault detector casing according to claim 1, is characterized in that: described pulse main circuit housing is the casing with openend, and the sidewall that the openend of casing is covered on casing main body forms a cavity; Side on described pulse main circuit housing is provided with optical fiber via hole (8), the sidewall relative with side, optical fiber via hole place is provided with impulse source main circuit output line via hole (10), the sidewall adjacent with side, optical fiber via hole place is provided with high-voltage DC power supply to pulse main circuit supply lines via hole (9).

6. transformer winding fault detector casing according to claim 1, is characterized in that: described dividing plate is provided with high-voltage DC power supply and Switching Power Supply supply lines via hole (11), pulse main circuit output line via hole (12), control circuit board mounting hole (13), fibre circuit via hole (14) and Switching Power Supply mounting hole (15).

7. transformer winding fault detector casing according to claim 1, is characterized in that: the arranged outside of described pulse main circuit housing has electro-conductive lacquer layer.

8. transformer winding fault detector casing according to claim 1, is characterized in that: the top side of described casing main body is provided with power supply switch hole (1), USB turns serial interface mounting hole (2) and BNC connector mounting hole (3).