CN207834139U - A kind of thermal power plant pull switch display device - Google Patents
A kind of thermal power plant pull switch display device Download PDFInfo
- Publication number
- CN207834139U CN207834139U CN201721619842.0U CN201721619842U CN207834139U CN 207834139 U CN207834139 U CN 207834139U CN 201721619842 U CN201721619842 U CN 201721619842U CN 207834139 U CN207834139 U CN 207834139U
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- CN
- China
- Prior art keywords
- indicator light
- normally
- pull switch
- control loop
- zero curve
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Abstract
The utility model discloses a kind of thermal power plant pull switch display devices, including electric power incoming line, normally-closed contact, normally opened contact, red indicating light, green indicator light, control loop wiring A, control loop wiring B, indicator light zero curve A and indicator light zero curve B, normally-closed contact is located at the end point of control loop wiring A, normally opened contact is located at the end point of control loop wiring B, electric power incoming line is connected to normally-closed contact or normally opened contact, one end of red indicating light is connected to normally-closed contact, the other end is connected to indicator light zero curve A, one end of green indicator light is connected to normally opened contact, the other end is connected to indicator light zero curve B.The utility model is by installing status indicator lamp additional, it is indiscoverable to solve the problems, such as that pull switch mild action is not easy contact fault in discovery or pull switch, the efficiency for improving the maintenance of pull switch circuit, improves belt reliability of operation and safety, and system operation is more stablized.
Description
Technical field
The utility model is related on off state display technology fields, and in particular to a kind of thermal power plant pull switch is shown
Device.
Background technology
Pull switch is widely used in the protection of various belt systems, in applying at the scene, when conveyer belt encounters exception
When situation, it can quickly stop conveyer belt with pull switch.Pull switch is widely used in thermal power plant coal conveyer belt, passes through drawing
Dynamic steel wire rope makes dynamic/static contact in pull switch act, and (emergency outage skin is used primarily in connect or stop control loop
Band), when traditional pull switch is without instruction, especially pull switch mild action or pull switch internal fault is significantly acted
It is not noticeable in appearance, be difficult that search be the action of which pull switch in multiple serial or parallel connection circuits, to debugging or
It resets pull switch and causes difficulty, waste of manpower and time, also affect the promptness that equipment uses, seriously threaten safe life
Production.
A kind of pull switch used for conveyer belt is disclosed in the file of Publication No. CN202007020U, in normally-closed contact
There are two the voltage indicator lamps being grounded can find fault point by the state of voltage indicator lamp for both ends parallel connection.But it can only
Suitable on concatenated multiple normally-closed contacts, if occurring multiple fault points simultaneously, can not disposably measure, and can not
Measure the fault condition of normally opened contact.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of thermal power plant pull switch display devices, should
Display device solves the inaccuracy that traditional pull switch can only judge state of pull switches by pull switch machine performance
Property and pull switch in auxiliary contact failure can not appearance judge problem.
Technical problem to be solved in the utility model is realized using following technical scheme：
A kind of thermal power plant pull switch display device, including electric power incoming line, normally-closed contact, normally opened contact, red refer to
Show lamp, green indicator light, control loop wiring A, control loop wiring B, indicator light zero curve A and indicator light zero curve B, it is described normally closed
Contact is located at the end point of control loop wiring A, and the normally opened contact is located at the end point of control loop wiring B, the power supply
Inlet wire is connected to normally-closed contact or normally opened contact, and one end of the red indicating light is connected to normally-closed contact, other end connection
It is connected to normally opened contact in one end of indicator light zero curve A, the green indicator light, the other end is connected to indicator light zero curve B.
Further improvement lies in that the voltage class of the red indicating light and green indicator light is AC/DC 0-380V.
Further improvement lies in that the electric power incoming line is firewire inlet wire.
Further improvement lies in that the red indicating light is NE-2 neon lamps, the green indicator light is argon lamp.
The utility model has the beneficial effects that：Pull switch display device solves drawstring by installing status indicator lamp additional
Switch mild action is not easy the indiscoverable problem of contact fault in discovery or pull switch, reduces big in serial or parallel connection
Time-consuming for the pull switch site examining and repairing of amount, improves the efficiency of pull switch circuit maintenance, improves the reliable of belt operation
Property and safety, system operation more stablize.
Description of the drawings
Fig. 1 is the structure principle chart of the utility model；
Fig. 2 is the structural plan figure that the utility model is implemented；
Wherein, 1- electric power incoming lines, 2- normally-closed contacts, 3- normally opened contacts, 4- red indicating lights, 5- green indicator lights, 6- controls
Circuit connection A processed, 7- control loop wiring B, 8- indicator light zero curve A, 9- indicator light zero curve B, 10- switch case, 11- outlets
Mouthful, 12- swing arms, 13- restorers.
Specific implementation mode
In order to make the technical means, creative features, achievement of purpose, and effectiveness of the utility model be easy to understand, under
Face combination is specifically illustrating and embodiment, and the utility model is expanded on further.
As shown in Figure 1, a kind of thermal power plant pull switch display device, including it is electric power incoming line 1, normally-closed contact 2, normally opened
Contact 3, red indicating light 4, green indicator light 5, control loop wiring A6, control loop wiring B7, indicator light zero curve A8 and refer to
Show that lamp zero curve B9, normally-closed contact 2 are located at the end point of control loop wiring A6, normally opened contact 3 is located at control loop wiring B7's
End point, electric power incoming line 1 are connected to normally-closed contact 2 or normally opened contact 3, and one end of red indicating light 4 is connected to normally-closed contact
2, the other end is connected to indicator light zero curve A8, and one end of green indicator light 5 is connected to normally opened contact 3, and the other end is connected to instruction
Lamp zero curve B9.
As preferred case, the voltage class of red indicating light 4 and green indicator light 5 is AC/DC0-380V.
As preferred case, electric power incoming line 1 is firewire inlet wire.
As preferred case, red indicating light 4 is NE-2 neon lamps, and green indicator light 5 is argon lamp.
As shown in Fig. 2, it is shown that the one such installation diagram of the utility model comprising switch case 10, switch housing
The side of body 10 is equipped with line outlet 11, is used for connection stay cord, the swing of the pulling control swing arm 12 of drawstring, swing arm 12 is equipped with multiple
Position device 13, the reset for switch.Red indicating light 4 and green indicator light 5 are mounted on the top of switch case 10 side by side, are convenient for
Observation.Two indicator lights of pull switch and auxiliary contact wiring are completed, and there are terminal block, external cabling only needs to lead to for inside
Cross pull switch casing access internal terminal row.
Under normal condition, the normally-closed contact 2 of pull switch is closed, and normally opened contact 3 disconnects, and red indicating light 4 is bright, and green refers to
Show that lamp 5 does not work.When pull switch acts, normally-closed contact 2 disconnects, and control loop wiring A6 disconnects, and normally opened contact 3 is closed,
Green indicator light 5 is bright, and red indicating light 4 does not work.When only normally-closed contact 2 or 3 contact fault of normally opened contact lead to control loop
When failure, and it is least easy lookup, this when observes two indicator lights can be very clear, it should bright red light
(or green light) does not work, and operating personnel or service personnel can be the discovery which pull switch action or failure immediately, in order to reset
Or maintenance.
Furthermore it is possible to which the display device serial or parallel connection of the utility model introduction is used.When series connection, under normal condition,
Concatenated each red indicating light is bright, if some normally-closed contact breaks down, that is, occur on one side all light, while Quan dark feelings
Condition can quickly find out fault point, and normally-closed contact is similarly.When in parallel, after every group of indicator light (red and green display lamp)
Face connection relay, each display device detect the switch fault of different location respectively.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope
It is defined by the appending claims and its equivalent thereof.
Claims (4)
1. a kind of thermal power plant pull switch display device, it is characterised in that：Including electric power incoming line (1), normally-closed contact (2),
Normally opened contact (3), green indicator light (5), control loop wiring A (6), control loop wiring B (7), refers to red indicating light (4)
Show lamp zero curve A (8) and indicator light zero curve B (9), the normally-closed contact (2) is located at the end point of control loop wiring A (6), described
Normally opened contact (3) is located at the end point of control loop wiring B (7), the electric power incoming line (1) be connected to normally-closed contact (2) or
One end of normally opened contact (3), the red indicating light (4) is connected to normally-closed contact (2), and the other end is connected to indicator light zero curve A
(8), one end of the green indicator light (5) is connected to normally opened contact (3), and the other end is connected to indicator light zero curve B (9).
2. a kind of thermal power plant pull switch display device according to claim 1, it is characterised in that：The red refers to
Show that the voltage class of lamp (4) and green indicator light (5) is AC/DC0-380V.
3. a kind of thermal power plant pull switch display device according to claim 1, it is characterised in that：The power supply into
Line (1) is firewire inlet wire.
4. a kind of thermal power plant pull switch display device according to claim 1, it is characterised in that：The red refers to
Show that lamp (4) is NE-2 neon lamps, the green indicator light (5) is argon lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721619842.0U CN207834139U (en) | 2017-11-28 | 2017-11-28 | A kind of thermal power plant pull switch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721619842.0U CN207834139U (en) | 2017-11-28 | 2017-11-28 | A kind of thermal power plant pull switch display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207834139U true CN207834139U (en) | 2018-09-07 |
Family
ID=63386890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721619842.0U Expired - Fee Related CN207834139U (en) | 2017-11-28 | 2017-11-28 | A kind of thermal power plant pull switch display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207834139U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903616A (en) * | 2021-09-29 | 2022-01-07 | 华能国际电力股份有限公司丹东电厂 | Pull switch monitoring system |
-
2017
- 2017-11-28 CN CN201721619842.0U patent/CN207834139U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903616A (en) * | 2021-09-29 | 2022-01-07 | 华能国际电力股份有限公司丹东电厂 | Pull switch monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180907 Termination date: 20191128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |