Intermediate relay verification device for hydropower station verification

Abstract

The utility model discloses an intermediate relay checking device for checking a hydropower station. The intermediate relay checking device comprises a box body and a checking structure arranged in the box body, the verification structure comprises a change-over switch located on the upper left portion, a first-stage installation guide rail located on the lower left portion, a plurality of connecting pieces located on the upper right portion and a second-stage installation guide rail located on the lower right portion. A first-level terminal strip is arranged between the first-level installation guide rail and the second-level installation guide rail, and a second-level terminal strip is arranged on the right side of the second-level installation guide rail. According to the utility model, the checking structure is arranged in the box body and is composed of the change-over switch, the first-stage (second-stage) mounting guide rail, the connecting sheet and the first-stage (second-stage) terminal strip, so that checking work of the intermediate relay is realized; according to the invention, the verification time can be effectively shortened, and the verification operation is safer; the utility model has the advantages of convenient inspection and relatively safer performance.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station technology, and in particular to an intermediate relay calibration device for hydropower station calibration. Background Technology

[0002] Intermediate relays are actually voltage relays. The difference between intermediate relays and ordinary voltage relays is that intermediate relays have many contacts, and the contacts allow a larger current to flow through them. They can disconnect and connect circuits with larger currents and are usually used in automated control circuits, playing roles such as automatic adjustment, safety protection, and circuit switching.

[0003] However, since many processes in the production process are still done manually, the quality consistency is poor and faults are prone to occur. Therefore, it is very important to conduct comprehensive testing on the parameters of the relay to ensure its performance and prevent abnormalities after it is put into use.

[0004] In hydropower plant control systems, a large number of intermediate relays are typically used. However, existing methods for verifying intermediate relays are time-consuming and labor-intensive, and pose risks of electric shock and equipment short circuits. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for intermediate relays used in hydropower station testing. This invention has the advantages of convenient testing and relatively higher safety.

[0006] The technical solution of this utility model is as follows: A calibration device for an intermediate relay used in hydropower station calibration, comprising a housing and a calibration structure disposed within the housing; the calibration structure includes a changeover switch located at the upper left, a primary mounting rail located at the lower left, multiple connecting pieces located at the upper right, and a secondary mounting rail located at the lower right; a primary terminal block is provided between the primary mounting rail and the secondary mounting rail, and a secondary terminal block is provided on the right side of the secondary mounting rail.

[0007] In the aforementioned intermediate relay testing device for hydropower station testing, the changeover switch is used to switch the base of intermediate relays with different contacts.

[0008] In the aforementioned intermediate relay calibration device for hydropower station calibration, the primary mounting rail is used to install multiple intermediate relay bases with two pairs of contacts.

[0009] In the aforementioned intermediate relay testing device for hydropower station testing, there are two connecting plates, which are used on the negative power supply side of the intermediate relay.

[0010] In the aforementioned intermediate relay calibration device for hydropower station calibration, both the primary terminal block and the secondary terminal block are used to connect at least the quantity to be measured, including power supply and contact; both the primary terminal block and the secondary terminal block are test terminals.

[0011] In the aforementioned intermediate relay testing device for hydropower station testing, the housing is made of insulating material.

[0012] Compared with the prior art, this utility model arranges the verification structure inside the box. The verification structure consists of a regularly distributed changeover switch, a primary (secondary) mounting rail, a connecting piece, and a primary (secondary) terminal block. Through clever arrangement, it can realize the verification of intermediate relays such as LY2N-J, MY4NJ, and MY4N-GS DC 220V, 24V, and AC 220V.

[0013] Using this application for intermediate relay verification can effectively shorten the verification time;

[0014] Furthermore, this application is applicable to the calibration of relays with different contacts and voltage levels, thus resolving the risks of electric shock to personnel and short circuit of the testing instrument that may occur during the calibration process.

[0015] Moreover, this application has a simple structure, is easy to install, and has low manufacturing costs.

[0016] Therefore, this utility model has the advantages of being easy to inspect and relatively safer. Attached Figure Description

[0017] Figure 1 This is a top view of an embodiment of the present utility model;

[0018] Figure 2 The wiring diagram of this utility model embodiment Figure 1 ;

[0019] Figure 3 The wiring diagram of this utility model embodiment Figure 2 ;

[0020] Figure 4 is a terminal block diagram of an embodiment of the present invention. Figure 4-1 The upper part Figure 4-2 (This is the lower half). Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0022] Example. A calibration device for an intermediate relay used in hydropower station calibration, such as... Figure 1 As shown in Figure -4, the device includes a housing and a verification structure housed within the housing. The verification structure includes a selector switch located at the upper left, a primary mounting rail located at the lower left, multiple connecting pieces located at the upper right, and a secondary mounting rail located at the lower right. A primary terminal block is provided between the primary mounting rail and the secondary mounting rail, and a secondary terminal block is provided on the right side of the secondary mounting rail.

[0023] The changeover switch is used to switch the base of intermediate relays with different contacts to prevent the relay base from being continuously energized when there is no operation.

[0024] The primary mounting rail is used to install multiple intermediate relay bases with two pairs of contacts for calibrating the intermediate relays with two pairs of contacts.

[0025] There are two connecting plates, which act on the negative power supply side of the two sets of intermediate relays respectively; when measuring the resistance of the intermediate relay coil, the connecting plate is disconnected; when it is necessary to energize the intermediate relay, the connecting plate is closed.

[0026] The secondary mounting rail is used to install multiple 4-pair contact intermediate relay bases for calibrating the 4-pair contact intermediate relays.

[0027] Both the primary terminal block and the secondary terminal block are used to connect at least the power supply and contact quantity to be measured, enabling data measurement; both the primary terminal block and the secondary terminal block are test terminals.

[0028] The box is made of insulating material and has a portable box-type structure.

Claims

1. A testing device for intermediate relays used in hydropower station testing, characterized in that: It includes a housing and a calibration structure housed within the housing; the calibration structure includes a selector switch located at the upper left, a primary mounting rail located at the lower left, multiple connecting pieces located at the upper right, and a secondary mounting rail located at the lower right; a primary terminal block is provided between the primary mounting rail and the secondary mounting rail, and a secondary terminal block is provided on the right side of the secondary mounting rail.

2. The intermediate relay calibration device for hydropower station calibration according to claim 1, characterized in that: The changeover switch is used to switch the base of intermediate relays with different contacts.

3. The intermediate relay calibration device for hydropower station calibration according to claim 1, characterized in that: The primary mounting rail is used to mount multiple intermediate relay bases with two pairs of contacts.

4. The intermediate relay calibration device for hydropower station calibration according to claim 1, characterized in that: There are two connecting pieces, used on the negative power supply side of the intermediate relay.

5. The intermediate relay calibration device for hydropower station calibration according to claim 1, characterized in that: The secondary mounting rail is used to mount multiple intermediate relay bases with four pairs of contacts.

6. The intermediate relay calibration device for hydropower station calibration according to claim 1, characterized in that: Both the primary terminal block and the secondary terminal block are used to connect at least the power supply and contact quantity to be measured; both the primary terminal block and the secondary terminal block are test terminals.

7. The intermediate relay calibration device for hydropower station calibration according to claim 1, characterized in that: The enclosure is made of insulating material.

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