Rapid detection platform for intermediate relay

Abstract

The utility model discloses an intermediate relay rapid detection platform which comprises an installation platform, a first part circuit and a second part circuit are integrated on the installation platform, a power converter is connected between the first part circuit and the second part circuit, and one end of the power converter connected with the first part circuit is connected with a first controller. The first controller is connected with a power supply; the first part circuit comprises a second controller, the second controller is connected with a signal detection circuit in parallel, and the signal detection circuit is used for being connected with an intermediate relay; the second part circuit comprises a third controller, and the third controller is connected with the signal detection circuit. According to the platform, the first part circuit containing the signal detection circuit and the second part circuit are integrated on the mounting platform, and the intermediate relay is rapidly detected through the cooperation of the first controller and the second controller, so that the detection process of the intermediate relay is faster and more efficient, and the working intensity of detection personnel is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric test of power systems, and in particular relates to a rapid detection platform for intermediate relays. Background Art

[0002] A relay is an electrical control device that causes a predetermined step change in the controlled variable in an electrical output circuit when a change in the input variable (excitation variable) meets a specified requirement. MKS3P intermediate relays are widely used in the control circuits of secondary equipment for safety control, circuit switching, automatic regulation, and power monitoring. Hydropower stations utilize a large number of switches, electric valves, oil pumps, and start-stop equipment, requiring numerous MKS3P intermediate relays in their operation and control circuits. These relays are used to implement functions such as opening and closing switches, opening and closing valves, starting and stopping oil pumps, and increasing and decreasing excitation and power. Regular inspections of these relays at hydropower stations typically require individual coil and contact testing. Typical relay inspections include: visual inspection, insulation inspection, coil DC resistance verification, operating and return voltage testing, and verification of the normal operation of the normally open and normally closed contacts.

[0003] Currently, relay protection testers are commonly used to test intermediate relays. This involves applying input (excitation) to a single relay coil through the relay base. By varying the input (excitation) value, the relay operates and returns according to specifications. A multimeter or wire alignment tool is used to check the switching between the normally open and normally closed contacts of the intermediate relay. While this combination of a relay protection tester and a multimeter (or wire alignment tool) can test intermediate relays, it is only suitable for testing individual relays. Furthermore, each intermediate relay is tested individually, item by item. However, due to the large number of intermediate relays installed in a hydropower station, this individual, item-by-item testing is time-consuming and requires constant connection or replacement of node circuits, resulting in a high workload and low efficiency. Utility Model Content

[0004] In order to solve the problem that the existing method of using a relay protection tester and a multimeter (or a line alignment device) to detect all intermediate relays in a hydropower station one by one and item by item is inefficient and makes the workload of the detection personnel high, the utility model provides an intermediate relay rapid detection platform.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model discloses an intermediate relay rapid detection platform, comprising a mounting platform, wherein a first circuit portion and a second circuit portion are integrated on the mounting platform, a power converter is connected between the first circuit portion and the second circuit portion, a first controller is connected to a power supply at one end of the power converter connected to the first circuit portion, and the first controller is connected to a power supply;

[0007] The first circuit includes a second controller, the second controller is connected in parallel with a signal detection circuit, and the signal detection circuit is used to connect to an intermediate relay;

[0008] The second circuit section includes a third controller, and the third controller is connected to the signal detection circuit.

[0009] Preferably, a plurality of the signal detection circuits are connected in parallel to the second controller, and each of the signal detection circuits is used to connect the normally closed contact and the normally open contact of the intermediate relay.

[0010] Preferably, six signal detection circuits are provided, and the six signal detection circuits are connected in parallel;

[0011] Each of the signal detection circuits includes a signal indication component and a connection base connected in series;

[0012] The connection base connects the third controller and the second controller, and the connection base is used to plug in the intermediate relay.

[0013] Preferably, the connection base is provided with a normally open contact, a normally closed contact and a coil contact;

[0014] The normally open contact point connects the normally open contact, the signal indication component and the second controller;

[0015] The normally closed contact point connects the normally closed contact, the signal indication component and the second controller;

[0016] The coil contact is connected to the coil contact of the intermediate relay and the third controller.

[0017] Preferably, the connection base is an MKS3P type relay base with three-open and three-close contacts.

[0018] Preferably, the signal indication assembly includes a first signal indicator light and a second signal indicator light connected in parallel;

[0019] The first signal indicator light is connected between the normally open contact point and the second controller;

[0020] The second signal indicator light is connected between the normally closed contact and the second controller.

[0021] Preferably, the first signal indicator light is a red signal indicator light; the second signal indicator light is a green signal indicator light;

[0022] The model of the red signal indicator light and the green signal indicator light is AD16-22D.

[0023] Preferably, the first controller and the second controller are both AC air switches, wherein the first controller has a specification of 2P and a rated current of 5A; the second controller has a specification of 2P and a rated current of 2A.

[0024] Preferably, the third controller is a DC air switch, wherein the specification of the third controller is 2P and the rated current is 3A.

[0025] Preferably, the power converter is an LRS-100-24 power module, which is used to convert 220V AC power into 24V DC power.

[0026] Compared with the prior art, the present invention has the following beneficial technical effects:

[0027] The utility model discloses a rapid detection platform for an intermediate relay. The platform integrates a first circuit and a second circuit containing a signal detection circuit on a mounting platform. Through the cooperation of a first controller and a second controller, and the conversion of power by a power converter, the intermediate relay is quickly tested for various functions and performances, making the detection process of the intermediate relay faster and more efficient, reducing the workload of the detection personnel, and improving the detection efficiency of the intermediate relay. At the same time, the series connection between the base and the signal detection component in the signal detection circuit can accurately capture various state changes of the intermediate relay, ensuring the accuracy of the detection results. In addition, there are only three controllers in the platform. The detection personnel only need to control the three controllers to detect the intermediate relay, reducing the workload of the detection personnel, and the operation is convenient, which can greatly improve the detection efficiency of the intermediate relay.

[0028] Furthermore, by equipping each normally closed contact and normally open contact of the intermediate relay with a signal detection circuit, this detection platform can monitor the status of all contacts of the intermediate relay at the same time, ensuring the integrity and accuracy of the test results. During the detection process, multiple signal detection circuits can simultaneously perform synchronous detection on multiple intermediate relays, significantly improving detection efficiency.

[0029] Furthermore, the detection platform is provided with six detection circuits, and thus the contacts of six intermediate relays can be detected synchronously through the detection platform, which greatly improves the detection efficiency and shortens the detection time.

[0030] Furthermore, the testing platform features a connection base with normally open (NO) contacts, normally closed (NC) contacts, and coil contacts. These connect the intermediate relay to the signal detection circuit, making plugging the intermediate relay simple and convenient. Testers only need to plug the intermediate relay into the connection base, eliminating the need for complex wiring operations and improving ease of use.

[0031] Furthermore, the detection platform displays the contact status of the intermediate relay and the coil by lighting up and off the first and second signal indicators. This allows the contact status of the intermediate relay to be quickly determined by directly observing the on and off status of the indicators. This eliminates the need for complex instruments or equipment, making detection more convenient and intuitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural diagram of an intermediate relay rapid detection platform provided by the utility model;

[0033] Figure 2 This is a circuit connection diagram of an intermediate relay rapid detection platform provided by the utility model;

[0034] In the figure: 1. Installation platform; 2. Connection base; 3. Red signal indicator light; 4. Green signal indicator light; 5. First controller; 6. Second controller; 7. Third controller; 8. Power converter. DETAILED DESCRIPTION

[0035] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0038] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0041] See also Figure 1 and Figure 2 The utility model discloses an intermediate relay rapid detection platform, including a mounting platform 1, on which a first circuit and a second circuit are integrated, a power converter 8 being connected between the first circuit and the second circuit, a first controller 5 being provided on the end of the power converter 8 connected to the first circuit, the first controller 5 being connected to a 220V AC power supply, and controlling the power input of the power converter 8, the second circuit, and the first circuit via the first controller 5 to ensure the safety of the platform. In this embodiment, the first controller 5 is an AC air switch, with a specification of 2P and a rated current of 5A. The first controller 5 can simultaneously control the live and neutral wires of the input power supply, thereby increasing the versatility and adaptability of the detection platform. In this embodiment, the converter is an LRS-100-24 power module, which is used to convert 220V AC power into 24V DC power.

[0042] The first part of the circuit includes a second controller 6, and multiple signal detection circuits are connected in parallel on the second controller 6. Each signal detection circuit is used to connect the normally closed contact and the normally open contact of the intermediate relay, that is, each signal detection circuit includes a signal indication component and a connection base 2 connected in series; the connection base 2 is connected to the third controller 7 and the second controller 6, and the connection base 2 is used to plug in the intermediate relay.

[0043] Each connection base is provided with three normally open contacts and three normally closed contacts. One normally open contact and one normally closed contact of the remaining two are arranged on one connection tube to form a normally open contact point; one normally open contact and one normally closed contact of the remaining two are arranged on another connection tube to form a normally closed contact point; the last normally open contact and the last normally closed contact are arranged on another connection tube to form a coil contact; the normally open contact point connects to the normally open contact, signal indicator component, and second controller 6 of the intermediate relay; the normally closed contact point connects to the normally closed contact, signal indicator component, and second controller 6 of the intermediate relay; multiple signal detection circuits are used to simultaneously detect the contact status of the normally closed contacts or normally open contacts of multiple intermediate relays, thereby improving detection efficiency. In this embodiment, the connection base 2 is an MKS3P type relay base with three open and three closed contacts.

[0044] The signal indicator assembly includes a first signal indicator light and a second signal indicator light connected in parallel. The first signal indicator light is connected between the normally open contact and the second controller; the second signal indicator light is connected between the normally closed contact and the second controller. The first signal indicator light is a red signal indicator light 3; the second signal indicator light is a green signal indicator light 4. The models of the red and green signal indicators 3 and 4 are AD16-22D. The second controller 6 is an AC air switch with a specification of 2P and a rated current of 2A. The signal detection circuit is activated by the second controller 6, allowing the detection platform to detect whether the normally closed and normally open contacts of the intermediate relay are in normal condition.

[0045] The second circuit includes a third controller 7, which is connected to the signal detection circuit and is a DC air switch. The third controller 7 has a specification of 2P and a rated current of 3A. The coil contact of the base 2 is connected to the coil contact of the intermediate relay and the third controller.

[0046] In this embodiment, six signal detection circuits are provided, and the six signal detection circuits are connected in parallel. Each signal detection circuit includes a MKS3P type relay base with three open and three closed contacts, a red signal indicator light 3 and a green signal indicator light 4. One end of the normally closed contact contact of the relay base is connected to one end of the green signal indicator light 4, the normally open contact contact of the MKS3P type relay base with three open and three closed contacts is connected to one end of the red signal indicator light 3, the other end of the red signal indicator light 3 and the other end of the green signal indicator light 4 are connected to the neutral wire end of the AC air switch JK1, the normally closed contact contact and the other end of the normally closed contact contact of the MKS3P type relay base with three open and three closed contacts are both connected to the live wire end of the AC air switch JK1, and the AC air switch JK1 is connected to the AC air switch JK. Among them, the MKS3P type relay bases for three open and three closed contacts in the six signal detection circuits are respectively MKS3P type relay base 1J for three open and three closed contacts, MKS3P type relay base 2J for three open and three closed contacts, MKS3P type relay base 3J for three open and three closed contacts, MKS3P type relay base 4J for three open and three closed contacts, MKS3P type relay base 5J for three open and three closed contacts, and MKS3P type relay base 6J for three open and three closed contacts; the red signal indicator light 3 and the green signal indicator light 4 in the six signal detection circuits are respectively red signal indicator light 1HD and green signal indicator light 1LD , red signal indicator light 2HD and green signal indicator light 2LD, red signal indicator light 3HD and green signal indicator light 3LD, red signal indicator light 4HD and green signal indicator light 4LD, red signal indicator light 5HD and green signal indicator light 5LD and red signal indicator light 6HD and green signal indicator light 6LD, then one end of the normally closed contact contact of the MKS3P type relay base 1J with three open and three closed contacts is connected to one end of the green signal indicator light 1LD, and the normally open contact contact of the MKS3P type relay base 1J with three open and three closed contacts is connected to one end of the red signal indicator light 1HD, and the other end of the red signal indicator light 1HD and the other end of the green signal indicator light 1LD are connected to the neutral line terminal of the AC air switch JK1, and the corresponding connections are made in sequence to obtain six parallel signal detection circuits.

[0047] Connect one end of the AC air switch JK1 on the AC air switch JK to one end of the LRS-100-24 power module, and the other end of the LRS-100-24 power module to the DC air switch ZK. The two ends of the air switch ZK are connected to the coil contacts of the MKS3P type relay base 1J with three-open and three-close contacts. When the centering relay is tested, close the AC air switch JK, and the LRS-100-24 power module starts working, converting 220V AC power into 24V DC power for the second circuit. Provide working voltage for the intermediate relay, and then close the AC air switch JK1. When the DC circuit breaker ZK is not closed, the coil circuit of the relay base 1-6J is not energized, and all the intermediate relays installed on the relay base 1-6J are in the unexcited state. At this time, the normally closed joint of the intermediate relay is closed and the normally open contact is disconnected. The circuit formed by the green signal indicator 1-6LD and the normally closed contact contact of the relay base 1-6J is connected to the power supply. At this time, the green signal indicator lights 1-6LD are all on, and the red signal indicator light 1-6HD forms a circuit with the normally open contact contact of the MKS3P type relay base 1-6J with three open and three closed contacts. There is no power input, and the red signal indicator lights 1-6HD are all off, which proves that the MKS3P type relay base 1-6J with three open and three closed contacts is on. The normally closed and normally open contacts of all connected intermediate relays are initially normal. If any of the green signal indicator lights 1-6LD is off or the red signal indicator light 1-6HD is on, this indicates an abnormality in the initial state of the normally closed contact of that intermediate relay. When the DC air switch ZK is closed, the intermediate relay connected to the MKS3P relay base 1-6J with three open and three close contacts is activated, with the normally open contact closed and the normally closed contact open. If the normally open contacts of the intermediate relay close normally, the corresponding red signal indicator light 1-6HD will light up and the green signal indicator light 1-6LD will go out. If any of the red signal indicator lights 1-6HD is off or the green signal indicator light 1-6LD is on, this indicates an abnormality in the intermediate relay connected to the corresponding MKS3P relay base with three open and three close contacts. This device can quickly detect whether the intermediate relays on the MKS3P relay base 1-6J with three open and three close contacts are normal, and can test six intermediate relays at a time, resulting in high detection efficiency.

[0048] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0049] In addition, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description is for clarity only. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for the purpose of illustrating the technical concept of the present utility model and cannot be used to limit the scope of protection of the present utility model. Any changes made based on the technical solution in accordance with the technical concept proposed by the present utility model shall fall within the scope of protection of the claims of the present utility model.

Claims

1. A rapid detection platform for intermediate relays, characterized in that: The invention comprises a mounting platform (1), wherein a first circuit section and a second circuit section are integrated on the mounting platform (1), a power converter (8) is connected between the first circuit section and the second circuit section, a first controller (5) is connected to one end of the power converter (8) connected to the first circuit section, and the first controller (5) is connected to a power source; The first circuit comprises a second controller (6), a signal detection circuit being connected in parallel to the second controller (6), and the signal detection circuit being used to connect to an intermediate relay; The second circuit section comprises a third controller (7), and the third controller (7) is connected to the signal detection circuit.

2. The intermediate relay rapid detection platform according to claim 1, characterized in that: A plurality of the signal detection circuits are connected in parallel to the second controller (6), and each of the signal detection circuits is used to connect the normally closed contact and the normally open contact of the intermediate relay.

3. The intermediate relay rapid detection platform according to claim 2, characterized in that: There are six signal detection circuits, and the six signal detection circuits are connected in parallel; Each of the signal detection circuits comprises a signal indication component and a connection base (2) connected in series; The connection base (2) is connected to the third controller (7) and the second controller (6), and the connection base (2) is used to plug the intermediate relay.

4. The intermediate relay rapid detection platform according to claim 3, characterized in that: The connection base (2) is provided with a normally open contact, a normally closed contact and a coil contact; The normally open contact point connects the normally open contact, the signal indication component and the second controller (6); The normally closed contact point connects the normally closed contact, the signal indication component and the second controller (6); The coil contact is connected to the coil contact of the intermediate relay and the third controller (7).

5. The intermediate relay rapid detection platform according to claim 4, characterized in that: The connection base (2) is an MKS3P type relay base having three-open and three-close contacts.

6. The intermediate relay rapid detection platform according to claim 4, characterized in that: The signal indicator assembly includes a first signal indicator light and a second signal indicator light connected in parallel; The first signal indicator light is connected between the normally open contact point and the second controller; The second signal indicator light is connected between the normally closed contact and the second controller.

7. The intermediate relay rapid detection platform according to claim 6, characterized in that: The first signal indicator light is a red signal indicator light (3); the second signal indicator light is a green signal indicator light (4); The model of the red signal indicator light (3) and the green signal indicator light (4) is AD16-22D.

8. The intermediate relay rapid detection platform according to claim 1, characterized in that: The first controller (5) and the second controller (6) are both AC air switches; wherein the specification of the first controller is 2P and the rated current is 5A; the specification of the second controller is 2P and the rated current is 2A.

9. The intermediate relay rapid detection platform according to claim 1, characterized in that: The third controller (7) is a DC air switch, wherein the specification of the third controller (7) is 2P and the rated current is 3A.

10. The intermediate relay rapid detection platform according to claim 1, characterized in that: The power converter (8) is an LRS-100-24 power module, which is used to convert 220V AC power into 24V DC power.

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