CN217639420U - Relay inspection device - Google Patents
Relay inspection device Download PDFInfo
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- CN217639420U CN217639420U CN202220709725.8U CN202220709725U CN217639420U CN 217639420 U CN217639420 U CN 217639420U CN 202220709725 U CN202220709725 U CN 202220709725U CN 217639420 U CN217639420 U CN 217639420U
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Abstract
The utility model provides a relay inspection device, include: the relay base is used for accessing a coil of a relay to be tested and a normally open node and a normally closed node of each passage of the relay; the indicator light is used for displaying whether the circuit is normal or not and comprises a relay access indicator light and a power indicator light; the fuse is used for circuit short-circuit protection and comprises a first fuse, a second fuse and a third fuse; the power supply indicating lamp is connected in the first loop in series, and the third fuse, the test button and the coil of the relay are connected in the second loop in series; the second fuse, the first fuse and the node indicating access are connected in series in a third loop, wherein in the node indicating access, a normally open node of each access is connected in series with a corresponding relay access indicating lamp, a normally closed node of each access is connected in series with a corresponding relay access indicating lamp, and relay accesses are connected in parallel; the first loop, the second loop and the third loop are connected in parallel.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment, in particular to relay inspection device.
Background
Relays are used for relay protection and, in automatic control systems, increase the number and capacity of contacts. When the relay is used for transmitting an intermediate signal in a control circuit, the intermediate relay has good electrical isolation characteristics, so that the direct connection on an electric appliance does not exist between a control party and a controlled party, and the aim of safety control is fulfilled.
At present, a common test method for relays adopts a universal meter to measure, whether coils are open or not is judged by measuring the resistance value of the coils of the relays, whether contact conditions of contacts are good or not is judged by measuring the resistance value between normally open contacts and normally closed contacts, and when a control loop with a plurality of relays is checked, the universal meter is particularly time-consuming and labor-consuming in measurement, and the relays in the control loop cannot be checked quickly and efficiently.
Disclosure of Invention
Based on the problem, the utility model provides a relay inspection device can be simply, quick, the efficient inspect relay coil and the good or bad of route.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a relay inspection device, include: the relay comprises a relay base (11), a coil (7) for accessing a relay to be tested, and a normally open node (10) and a normally closed node (9) for accessing each passage of the relay;
the indicating lamp is used for displaying whether the circuit is normal or not and comprises a relay access indicating lamp (8) and a power supply indicating lamp (4);
the fuse is used for circuit short circuit protection and comprises a first fuse (1), a second fuse (2) and a third fuse (3);
the power indicator (4) is connected in series in a first loop, and the third fuse (3), the test button (6) and a coil (7) of the relay are connected in series in a second loop; the relay path indicating lamps (8), the second fuses (2), the first fuses (1) and the node indicating paths are connected in a third loop in series, wherein in the node indicating paths, normally-open nodes (10) of all paths are connected with the corresponding relay path indicating lamps (8) in series, normally-closed nodes (9) of all paths are connected with the corresponding relay path indicating lamps (8) in series, and all relay paths are connected in parallel; the first loop, the second loop and the third loop are connected in parallel.
In one possible implementation, the test button (6) is used to energize or de-energize a coil (7) of the relay.
In a possible implementation manner, when the test button (6) is pressed, a coil (7) of the relay is electrified, and the states of a normally closed node (9) and a normally open node (10) of the relay are changed; when the test button (6) is loosened, the coil (7) of the relay is powered off, and the states of the normally closed node (9) and the normally open node (10) of the relay are recovered.
In one possible implementation manner, the change of the state of the normally closed node (9) refers to the disconnection of the normally closed node (9); the state of the normally open node (10) is changed, namely the normally open node (10) is closed.
In one possible implementation, the relay is AC220V or AC380V withstand voltage grade.
In one possible implementation manner, the method further includes: a housing (13);
the shell (13) is made of insulating materials; the relay base (11), the indicator light and the test button (6) are located on the shell (13).
In one possible implementation, the apparatus further includes:
a power socket (12) for connecting an external power source to the first, second, and third loops;
a power switch (5) for switching on or off the power socket (12).
In a possible implementation manner, the number of the relay path indicating lamps (8) is the same as the total number of normally open nodes (10) and normally closed nodes (9) of the relay, and any relay path indicating lamp (8) is connected with one normally open node (10) or one normally closed node (9) in series.
In a possible implementation, the relay base (11) comprises: the coil (7) is connected with the contact in series, the normally open node (10) is connected with the contact in series, and the normally closed node (9) is connected with the contact in series; the coil (7) is connected with the contacts in series and is used for connecting the coil (7) into the second loop in series, and the normally-open node (10) is connected with the contacts in series and the normally-closed node (9) is connected with the contacts in series and is respectively used for connecting each normally-open node (10) and each normally-closed node (9) to each corresponding passage in series.
Drawings
In order to more clearly illustrate the embodiments of the invention, reference will now be made briefly to the appended drawings, which are required for use in embodiments, with the understanding that the drawings illustrate only some embodiments of the invention and are therefore not to be considered limiting of its scope, as those skilled in the art will appreciate that other related drawings may be obtained from the accompanying drawings without the exercise of inventive faculty.
FIG. 1 is an external view of a relay inspection device according to an embodiment of the present application;
fig. 2 is a schematic diagram of an internal circuit of the relay inspection device in the embodiment of the present application.
Reference numerals:
the fuse protector comprises a first fuse 1, a second fuse 2, a third fuse 3, a power indicator 4, a power switch 5, a test button 6, a coil 7, a path indicator 8, a normally closed node 9, a normally open node 10, a relay base 11, a power socket 12 and a shell 13.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments with reference to the accompanying drawings.
An embodiment of the utility model provides a relay inspection device can be simply, fast, the efficient inspection relay coil and the good or bad of route.
As shown in fig. 1-2, an embodiment of the present invention provides a relay testing device, including:
the relay base 11 is used for accessing a coil 7 of a relay to be tested, and a normally open node 10 and a normally closed node 9 which are used for accessing each passage of the relay;
the indicator light is used for displaying whether the circuit is normal or not and comprises a relay passage indicator light 8 and a power supply indicator light 4;
the fuse is used for circuit short circuit protection and comprises a first fuse 1, a second fuse 2 and a third fuse 3;
the power indicator lamp 4 is connected in series in the first loop, and the third fuse 3, the test button 6 and the coil 7 of the relay are connected in series in the second loop; the relay path indicating lamps 8, the second fuse 2, the first fuse 1 and the node indicating paths are connected in series in a third loop, wherein in the node indicating paths, normally-open nodes 10 of all the paths are connected in series with the corresponding relay path indicating lamps 8, normally-closed nodes 9 of all the paths are connected in series with the corresponding relay path indicating lamps 8, and all the relay paths are connected in parallel; the first loop, the second loop and the third loop are connected in parallel.
In one embodiment, the test button 6 is used to power up or power down the coil 7 of the relay.
In one embodiment, when the test button 6 is pressed, the coil 7 of the relay is electrified, and the states of the normally closed node 9 and the normally open node 10 of the relay are changed; when the test button 6 is loosened, the coil 7 of the relay is de-energized, and the states of the normally closed node 9 and the normally open node 10 of the relay are restored.
In one embodiment, a change in state of the normally closed node 9 is an opening of the normally closed node 9; the change of state of the normally open node 10 means that the normally open node 10 is closed.
In one embodiment, the relay is of AC220V or AC380V withstand voltage class.
In one embodiment, further comprising: a housing 13;
the shell 13 is made of insulating material; the relay base 11, the indicator light and the test button 6 are positioned on the shell 13.
In one embodiment, the apparatus further comprises:
a power socket 12 for connecting an external power source to the first loop, the second loop, and the third loop;
and a power switch 5 for connecting or disconnecting the power socket 12.
In one embodiment, the number of the relay path indicating lamps 8 is the same as the total number of normally open nodes 10 and normally closed nodes 9 of the relay, and any relay path indicating lamp 8 is connected with one normally open node 10 or one normally closed node 9 in series.
In one embodiment, the relay base 11 includes: the coil 7 is connected with the contacts in series, the normally open node 10 is connected with the contacts in series, and the normally closed node 9 is connected with the contacts in series; and the series connection contact of the coil 7 is used for connecting the coil 7 into a second loop in series, and the series connection contact of the normally open node 10 and the series connection contact of the normally closed node 9 are respectively used for connecting each normally open node 10 and each normally closed node 9 to each corresponding path in series.
The embodiment of the utility model provides a relay inspection device operates application method as follows:
the device is connected with a power supply, a power switch is turned on, if the power supply is normal, a power indicator lamp is lightened, then a relay to be checked is inserted into a relay base, a path indicator lamp representing a normally closed node is lightened, and if the path indicator lamp of a certain path is not lightened, the path node is failed; and then a test button is pressed, the coil of the relay is electrified at the moment, the state of the relay access node is changed, namely, the normally closed node is disconnected, the normally open node is connected, the corresponding access indicator lamp representing the normally closed node is turned off, the access indicator lamp representing the normally open node is turned on, and if the access indicator lamp of a certain path is not turned on, the access node is in fault.
If the relay coil has a fault, the test button is pressed, and the state of the path indicating lamp cannot be changed.
This device easy operation, convenient to use owing to need not use the universal meter, do not have electrician's basic knowledge's people also can easily operate and use, has reduced the threshold of relay inspection, has improved the efficiency of relay inspection.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A relay testing device, comprising:
the relay comprises a relay base (11), a coil (7) used for accessing a relay to be checked, and a normally open node (10) and a normally closed node (9) used for accessing all paths of the relay;
the indicator light is used for displaying whether the circuit is normal or not and comprises a relay passage indicator light (8) and a power supply indicator light (4);
the fuse is used for circuit short circuit protection and comprises a first fuse (1), a second fuse (2) and a third fuse;
the power supply indicator lamp (4) is connected in series in a first loop, and the third fuse, the test button (6) and a coil (7) of the relay are connected in series in a second loop; the second fuse (2), the first fuse (1) and the node indicating path are connected in series in a third loop, wherein in the node indicating path, a normally open node (10) of each path is connected in series with a corresponding relay path indicating lamp (8), a normally closed node (9) of each path is connected in series with a corresponding relay path indicating lamp (8), and the relay paths are connected in parallel; the first loop, the second loop and the third loop are connected in parallel.
2. A relay testing device according to claim 1, characterized in that the test button (6) is used to power up or power down the coil (7) of the relay.
3. The relay checking device according to claim 2, characterized in that when the test button (6) is pressed, a coil (7) of the relay is electrified, and the states of a normally closed node (9) and a normally open node (10) of the relay are changed; when the test button (6) is loosened, the coil (7) of the relay loses power, and the states of the normally closed node (9) and the normally open node (10) of the relay are recovered.
4. A relay testing device according to claim 3, characterized in that the change of state of the normally closed node (9) is the opening of the normally closed node (9); the state of the normally open node (10) is changed, namely the normally open node (10) is closed.
5. The relay checking device according to claim 1, wherein the relay has a withstand voltage rating of AC220V or AC380V.
6. The relay testing device of claim 1, further comprising: a housing (13);
the shell (13) is made of insulating materials; the relay base (11), the indicator light and the test button (6) are positioned on the shell (13).
7. A relay testing device according to claim 1, further comprising:
a power socket (12) for connecting an external power source to the first, second, and third loops;
a power switch (5) for switching on or off the power socket (12).
8. A relay checking device according to claim 1, wherein the number of said relay path indicating lamps (8) is the same as the total number of normally open nodes (10) and normally closed nodes (9) of said relay, and any relay path indicating lamp (8) is connected in series with one normally open node (10) or one normally closed node (9).
9. Relay testing device according to claim 1, characterized in that the relay base (11) comprises: the coil (7) is connected with the contact in series, the normally open node (10) is connected with the contact in series, and the normally closed node (9) is connected with the contact in series; the coil (7) is connected with the contacts in series and is used for connecting the coil (7) into the second loop in series, and the normally-open node (10) is connected with the contacts in series and the normally-closed node (9) is connected with the contacts in series and is respectively used for connecting each normally-open node (10) and each normally-closed node (9) to each corresponding passage in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220709725.8U CN217639420U (en) | 2022-03-30 | 2022-03-30 | Relay inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220709725.8U CN217639420U (en) | 2022-03-30 | 2022-03-30 | Relay inspection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217639420U true CN217639420U (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220709725.8U Active CN217639420U (en) | 2022-03-30 | 2022-03-30 | Relay inspection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217639420U (en) |
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2022
- 2022-03-30 CN CN202220709725.8U patent/CN217639420U/en active Active
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