CN212725071U - Electrical protection locking device - Google Patents
Electrical protection locking device Download PDFInfo
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- CN212725071U CN212725071U CN202021533517.4U CN202021533517U CN212725071U CN 212725071 U CN212725071 U CN 212725071U CN 202021533517 U CN202021533517 U CN 202021533517U CN 212725071 U CN212725071 U CN 212725071U
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Abstract
The utility model provides an electrical protection blocking device sets up on the cabinet body of high-voltage electrical cabinet, and cabinet side face is equipped with limit switch with the cabinet door junction that opens and shuts, and limit switch includes combined floodgate switch and trip switch, and combined floodgate switch's auxiliary contact and the internal electrical system's of cabinet combined floodgate return circuit series connection, trip switch's auxiliary contact and the internal electrical system's of cabinet trip circuit parallel connection. The utility model provides a technical scheme does not influence original electrical system design in the high voltage distribution cabinet, and the mechanical action of opening, closing the cabinet door introduces electrical system's circuit control, and separating brake switch and trip switch move simultaneously, have very high reliability and security, have ensured electrical operation personnel's safety.
Description
Technical Field
The utility model relates to a high voltage distribution cabinet field especially relates to an electrical protection blocking device.
Background
The high-voltage power distribution cabinet is an electrical product which is used for power generation, power transmission, power distribution, electric energy conversion and consumption of a power system and plays roles of on-off, control or protection and the like, and the voltage level is 3.6 kV-550 kV, and the high-voltage power distribution cabinet plays a very important role in the whole power industry. When a fault occurs in the operation process of the power distribution cabinet or electric personnel perform misoperation, power failure maintenance must be performed.
In view of the above, an electrical protection locking device is proposed, which can automatically trip and cannot be closed when a cabinet door is opened, so as to protect the safety of an electrical operator.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electrical protection blocking device, when the cabinet door is opened, can automatic tripping and unable combined floodgate to this protection electrical operation personnel's safety.
The utility model discloses a technique be: the utility model provides an electrical protection blocking device, sets up on the cabinet body of high-voltage electrical cabinet, and cabinet side face and cabinet door opening and shutting junction are equipped with limit switch, and limit switch includes closing switch and trip switch, and closing switch's auxiliary contact and the internal electrical system's of cabinet combined floodgate return circuit series connection of closing switch, trip switch's auxiliary contact and the internal electrical system's of cabinet tripping circuit parallel connection.
As the further optimization of the scheme, the cabinet door comprises a plurality of front doors and rear doors, and limit switches are arranged at the joints of the front doors, the rear doors and the cabinet body.
As a further optimization of the scheme, an auxiliary contact of the closing switch is a normally open contact; the auxiliary contact of the tripping switch is a normally closed contact.
As a further optimization of the scheme, the closing loop also comprises a closing button, and the closing button is connected with an auxiliary contact of the closing switch in series; the trip circuit also includes a trip button in parallel with the auxiliary contacts of the trip switch.
As further optimization of the scheme, the device also comprises a single chip microcomputer, wherein a 301 port of the single chip microcomputer is connected with the anode of a power supply, and a 304 port of the single chip microcomputer is connected with the cathode of the power supply; the 306 port is connected with a button, a limit switch and a power supply anode in sequence; the 324 port is connected with a tripping and closing port, an idle port, a limit switch and a power supply anode in sequence; the 306 port is connected with the 324 port; the 323 port is sequentially connected with the switch cabinet control room port and the connection part of the vacant port of the 324 port and the limit switch; the port 321 is sequentially connected with the auxiliary contacts of the limit switches and the positive electrode of the power supply; the port 310, the port 309 and the port 322 are respectively connected with a plurality of auxiliary contacts of the limit switch, and the other ends of the plurality of auxiliary contacts are connected with the positive electrode of the power supply; the port 307 is connected with a tripping and closing port and is connected with the positive pole of a power supply.
As the further optimization of the scheme, the intelligent power supply further comprises an indicator light system, wherein the indicator light system comprises a closing indicator light and a tripping indicator light, one end of the tripping indicator light is connected with the negative pole of the power supply, one end of the tripping indicator light is connected with a circuit breaker, and the other end of the circuit breaker is connected with the positive pole of the power supply; and one end of the closing indicator lamp is connected with the negative pole of the power supply, one end of the closing indicator lamp is connected with the breaker, and the other end of the breaker is connected with the positive pole of the power supply.
As further optimization of the scheme, the intelligent control system further comprises a circuit breaker operating mechanism, wherein a 303 port of the single chip microcomputer is sequentially connected with two switches, a closing coil, a circuit breaker and a power supply cathode; the port 302 is connected between the two switches of the port 303; and the port 308 is sequentially connected with the opening coil, the breaker and the negative electrode of the power supply.
Compared with the prior art, the beneficial effects of the utility model are that: the original electrical system design in the high-voltage power distribution cabinet is not influenced, the mechanical action of opening and closing the cabinet door is introduced into the circuit control of the electrical system, and the opening switch and the tripping switch act simultaneously, so that the high-voltage switch has high reliability and safety, and the safety of electrical operation personnel is guaranteed.
Drawings
Fig. 1 is a structural diagram of an electric protection locking device provided by the present invention;
fig. 2 is a closing loop of an electrical system in a cabinet body of an electrical protection locking device provided by the present invention;
fig. 3 is a trip circuit of an electrical system within a cabinet of an electrical protection lockout device provided by the present invention;
fig. 4 is an electrical diagram of an application of an electrical protection locking device provided by the present invention.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
In the description of the present embodiments, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
Referring to the attached drawings 1-4, an electrical protection locking device is arranged on a cabinet body 1 of a high-voltage electrical cabinet, a limit switch is arranged at the opening and closing connection position of the side surface of the cabinet body 1 and a cabinet door 2, the limit switch comprises a closing switch 3 and a tripping switch 4, an auxiliary contact of the closing switch 3 is connected with a closing loop of an electrical system in the cabinet body in series, and an auxiliary contact of the tripping switch 4 is connected with a tripping loop of the electrical system in the cabinet body in parallel.
The cabinet door 2 comprises a plurality of front doors and rear doors, and limit switches are arranged at the joints of the front doors and the rear doors and the cabinet body 1.
The auxiliary contact of the closing switch 3 is a normally open contact; the auxiliary contact of the trip switch 4 is a normally closed contact. The closing loop also comprises a closing button which is connected with an auxiliary contact of the closing switch 3 in series; the trip circuit also includes a trip button connected in parallel with the auxiliary contacts of the trip switch 4.
The limit switch sets up in the junction of the cabinet body 1 and cabinet door 2, and during normal work, cabinet door 2 closes, and the cabinet body 1 is parallel with cabinet door 2, and limit switch is pressed in the extrusion of cabinet door 2 lateral wall, and closing switch 3's normally open contact switches on, and tripping switch 4's normally closed contact breaks off. When the normally open contacts of all the closing switches 3 connected in series in the closing loop are switched on, and the normally open contacts of all the tripping switches 4 connected in parallel in the tripping loop are switched off, namely when all the cabinet doors 2 of the high-voltage power distribution cabinet are closed, the closing button S is closed, and the electric system in the cabinet body is switched on to start working and running.
When the high-voltage power distribution cabinet needs to be opened or maintained, the normal operation is to close the trip button S0, the operation or maintenance is carried out after the power of an electrical system in the high-voltage power distribution cabinet is lost, the cabinet door 2 is closed after the operation or maintenance is finished, the trip button S0 is opened, the closing button S is closed, and the electrical system is restarted and works, so that the safety of electrical workers is guaranteed.
If the cabinet doors are suddenly opened due to operator operation errors or equipment faults, under the condition, when any cabinet door 2 is opened, the limit switch at the joint of the cabinet door 2 and the cabinet body 1 is disconnected, the normally open contact of the closing switch 3 is disconnected, the normally closed contact of the tripping switch 4 is connected, the normally open contact of the closing switch 3 is connected in series in a closing loop, and the normally open contact of any closing switch 3 is disconnected, so that the closing loop is disconnected; the normally open contact of the tripping switch 4 is connected in parallel in the tripping loop, and the normally open contact of any closing switch 4 is closed, so that the closing loop is switched on. The tripping loop is connected, and the electrical system is powered off, so that the safety of personnel and equipment is guaranteed. And under the condition that cabinet door 2 was opened, closed closing button S, the closing return circuit also can't be put through, need close all cabinet doors 2, presses closing switch S again, and electric system just can restart.
The device also comprises a singlechip, wherein a 301 port of the singlechip is connected with the anode of a power supply, and a 304 port of the singlechip is connected with the cathode of the power supply; the 306 port is connected with a button, a limit switch and a power supply anode in sequence; the 324 port is connected with a tripping and closing port, an idle port, a limit switch and a power supply anode in sequence; the 306 port is connected with the 324 port; the 323 port is sequentially connected with the switch cabinet control room port and the connection part of the vacant port of the 324 port and the limit switch; the port 321 is sequentially connected with the auxiliary contacts of the limit switches and the positive electrode of the power supply; the port 310, the port 309 and the port 322 are respectively connected with a plurality of auxiliary contacts of the limit switch, and the other ends of the plurality of auxiliary contacts are connected with the positive electrode of the power supply; the port 307 is connected with a tripping and closing port and is connected with the positive pole of a power supply.
The intelligent power supply system also comprises an indicating lamp system, wherein the indicating lamp system comprises a closing indicating lamp and a tripping indicating lamp, one end of the tripping indicating lamp is connected with the negative pole of the power supply, one end of the tripping indicating lamp is connected with the breaker, and the other end of the breaker is connected with the positive pole of the power supply; and one end of the closing indicator lamp is connected with the negative pole of the power supply, one end of the closing indicator lamp is connected with the breaker, and the other end of the breaker is connected with the positive pole of the power supply.
The circuit breaker is characterized by further comprising a circuit breaker operating mechanism, wherein the 303 port of the single chip microcomputer is sequentially connected with two switches, a closing coil, a circuit breaker and a power supply cathode; the port 302 is connected between the two switches of the port 303; and the port 308 is sequentially connected with the opening coil, the breaker and the negative electrode of the power supply.
As an implementation mode of the utility model, the design of the closing loop and the tripping loop is connected into the electrical system, the original design of the system is not influenced, and the indicating lamp system is matched, when closing, the closing indicating lamp is on, and the tripping indicating lamp is off; and when tripping is carried out, the tripping indicating lamp is turned on, and the closing indicating lamp is turned off, so that the system electrification condition of the electrical operating personnel is prompted.
The utility model provides a technical scheme does not influence the design of original electric system in the high voltage distribution cabinet, and the mechanical action of opening, closing cabinet door 2 introduces electric system's circuit control, and separating brake switch 3 and trip switch 4 move simultaneously, have very high reliability and security, have ensured electrical operation personnel's safety.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides an electrical protection blocking device, sets up on cabinet body (1) of high-voltage electrical cabinet, its characterized in that, cabinet body (1) side is equipped with limit switch with cabinet door (2) opening and shutting junction, limit switch includes closing switch (3) and trip switch (4), closing switch's (3) auxiliary contact and the cabinet body (1) interior electrical system's of the body combined with floodgate return circuit series connection, trip switch's (4) auxiliary contact and the cabinet body (1) interior electrical system's of the body combined with trips return circuit parallel connection.
2. An electric protection locking device according to claim 1, wherein the cabinet door (2) comprises a plurality of front doors and rear doors, and limit switches are arranged at the joints of the front doors and the rear doors and the cabinet body (1).
3. An electrical protection lockout device as claimed in claim 1 wherein the auxiliary contact of the closing switch is a normally open contact; and the auxiliary contact of the tripping switch is a normally closed contact.
4. An electric protection blocking device, according to claim 1, characterized in that said closing circuit also comprises a closing button, connected in series with an auxiliary contact of said closing switch (3);
the trip circuit further comprises a trip button connected in parallel with the auxiliary contacts of the trip switch (4).
5. The electrical protection locking device according to claim 1, further comprising a single chip microcomputer, wherein a port 301 of the single chip microcomputer is connected with a positive electrode of a power supply, and a port 304 of the single chip microcomputer is connected with a negative electrode of the power supply; the 306 port is connected with a button, a limit switch and a power supply anode in sequence; the 324 port is connected with a tripping and closing port, an idle port, a limit switch and a power supply anode in sequence; the 306 port is connected with the 324 port; the 323 port is sequentially connected with the switch cabinet control room port and the connection part of the vacant port of the 324 port and the limit switch; the port 321 is sequentially connected with the auxiliary contacts of the limit switches and the positive electrode of the power supply; the port 310, the port 309 and the port 322 are respectively connected with a plurality of auxiliary contacts of the limit switch, and the other ends of the plurality of auxiliary contacts are connected with the positive electrode of the power supply; the port 307 is connected with a tripping and closing port and is connected with the positive pole of a power supply.
6. The electrical protection lockout device of claim 5 further comprising an indicator light system, wherein the indicator light system comprises a closing indicator light and a trip indicator light, wherein one end of the trip indicator light is connected to the negative pole of the power source, one end of the trip indicator light is connected to the circuit breaker, and the other end of the circuit breaker is connected to the positive pole of the power source; and one end of the closing indicator lamp is connected with the negative pole of the power supply, one end of the closing indicator lamp is connected with the breaker, and the other end of the breaker is connected with the positive pole of the power supply.
7. The electrical protection locking device according to claim 5, further comprising a circuit breaker operating mechanism, wherein the 303 port of the single chip microcomputer is sequentially connected with two switches, a closing coil, a circuit breaker and a power supply cathode; the port 302 is connected between the two switches of the port 303; and the port 308 is sequentially connected with the opening coil, the breaker and the negative electrode of the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021533517.4U CN212725071U (en) | 2020-07-29 | 2020-07-29 | Electrical protection locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021533517.4U CN212725071U (en) | 2020-07-29 | 2020-07-29 | Electrical protection locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212725071U true CN212725071U (en) | 2021-03-16 |
Family
ID=74910294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021533517.4U Active CN212725071U (en) | 2020-07-29 | 2020-07-29 | Electrical protection locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212725071U (en) |
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2020
- 2020-07-29 CN CN202021533517.4U patent/CN212725071U/en active Active
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