CN213435048U - Electric interlocking safety device, electric interlocking safety circuit and manhole door - Google Patents
Electric interlocking safety device, electric interlocking safety circuit and manhole door Download PDFInfo
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- CN213435048U CN213435048U CN202021183832.9U CN202021183832U CN213435048U CN 213435048 U CN213435048 U CN 213435048U CN 202021183832 U CN202021183832 U CN 202021183832U CN 213435048 U CN213435048 U CN 213435048U
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Abstract
The application provides a pair of electric interlocking safety device, electric interlocking safety circuit and manhole door, through installing proximity switch on the support frame in manhole door side, proximity switch button stretches out height-adjustable, and the preforming passes through the adjusting part and installs on the manhole door, stretches out height adjustment adjusting part according to proximity switch's button to obtain best switch effect. The proximity switch and the safety indicating device are connected in parallel in the low-voltage control circuit, and the low-voltage control circuit controls whether the high-voltage system is conducted or not according to the switching condition of the proximity switch. Through the electric interlocking safety device that this application provided, when can guaranteeing that maintainer gets into the electric field, high-voltage system has broken off, withdraws from the electric field at maintainer after, high-voltage system just can start, and furthest reduces the interference that artificial factor opened and stops high-voltage system to improve the security performance of manhole door, guarantee maintainer's personal safety.
Description
Technical Field
The application relates to the technical field of electric field internal overhaul, in particular to an electric interlocking safety device, an electric interlocking safety circuit and a manhole door, which are used for ensuring the safety of the manhole door of an electric field.
Background
With the development of economy and the improvement of the living standard of people, industrial equipment increasingly depends on mechanical speech and automatic speech, the action of people is gradually weakened, and meanwhile, the requirements on the safety and the life health of people are higher and higher. In order to overhaul the electrostatic precipitator, need set up certain manhole door at every electric field, but the electric field district is high-voltage discharge, and the voltage is up to several tens of thousands of volts, extremely dangerous, promptly: when maintenance personnel enter the electric field for maintenance, the high-voltage system must be reliably stopped, otherwise the terrible consequences of personal injury can be caused.
In order to ensure that a high-voltage system is disconnected when an overhaul worker enters an electric field and cannot be started before the overhaul worker closes a manhole door, in the prior art, mechanical interlocking is mostly adopted, and the 'no-load copper padlock interlocking control' is simply adopted, namely a key is managed by a manager, the key is mainly managed by a process and the manager, the key is allowed to be lent out after the high-voltage system is stopped, and the high voltage is allowed to be started after the key is returned; the method is characterized in that a copper padlock and an interlocking box are adopted for control, namely, a mechanical interlocking relation exists between a copper padlock key and the interlocking box, namely, after the copper padlock key leaves the interlocking box, a high-voltage system is disconnected, and after the copper padlock key is inserted into a corresponding position of the interlocking box, the high-voltage system can be started.
However, the safety of the mechanical interlocking of the two modes has high requirements on a copper padlock of an on-site manhole door, and needs working conditions such as temperature resistance, corrosion resistance and the like; simultaneously to maintainer and managers requirement height, low quality personnel cause easily abandoning the copper padlock, prize bad copper padlock, uncontrollable problems such as duplication key appear, lead to mechanical interlock shape with the nominal.
SUMMERY OF THE UTILITY MODEL
The application provides an electric interlocking safety device, an electric interlocking safety circuit and a manhole door, and the invention aims to: how to guarantee that the maintainer gets into the electric field when, high-voltage system has disconnected, withdraws from the electric field at the maintainer after, high-voltage system just can start, and furthest reduces the interference that artificial factor opened and stops high-voltage system to improve the security performance of manhole door, ensure maintainer's personal safety.
In order to achieve the above object, the present application provides the following technical solutions:
an electrically interlocked safety device for controlling opening and closing of a manhole door, the electrically interlocked safety device comprising: preforming, adjusting part, support frame and proximity switch, wherein:
the proximity switch is arranged on the support frame on the side surface of the manhole door, and the extending height of a button of the proximity switch is adjustable;
the pressing sheet is installed on the manhole door through the adjusting piece, and the adjusting piece is adjusted according to the extending height of the button of the proximity switch;
the proximity switch is connected in parallel in a low-voltage control circuit and used for controlling the opening and closing of the electric interlocking safety device, and the low-voltage control circuit controls the connection and disconnection of a high-voltage system according to the switching condition of the proximity switch.
Preferably, the electrically interlocked safety device further comprises:
the safety indicating device is arranged at a position close to the proximity switch and connected in parallel in the low-voltage control circuit, and is used for indicating the opening and closing states of the manhole door.
Preferably, the safety indicating device is a safety indicating lamp.
An electrically interlocked safety circuit including an electrically interlocked safety device, a power supply source, a fuse, a relay, and a cabling, the electrically interlocked safety device comprising: proximity switch, support frame, preforming, adjusting part and safety indicating device, wherein:
the input end of the power supply is connected to the electric interlocking safety circuit and is divided into at least two paths after passing through the fuse, one path is connected to the relay and then is connected with an auxiliary contact of a proximity switch in the electric interlocking safety device, the other paths are connected to a safety indicating device after passing through the relay, and all the paths are combined and then are connected to the output end of the power supply;
when the high-voltage system works normally, the manhole door is in a closed state, the auxiliary contact of the proximity switch is closed, the relay is in a power-on state, the auxiliary contact of the relay is closed to control the high-voltage system to be switched on, the auxiliary contact of the relay of the safety indicating device circuit is switched off, and the safety indicating device is in an out-of-operation state;
when the high-voltage system needs to be overhauled, the manhole door is in an open state, the auxiliary contact of the proximity switch is disconnected, the relay is in a non-electrified state, then the auxiliary contact of the relay is disconnected, the high-voltage system is controlled to be disconnected, the auxiliary contact of the relay of the safety indicating device circuit is closed, and the safety indicating device is in a working state.
A manhole door comprising an electrical interlock safety circuit as described above.
The application provides a pair of electric interlocking safety device, electric interlocking safety circuit and manhole door, through installing proximity switch on the support frame in manhole door side, proximity switch button stretches out height-adjustable, and the preforming passes through the adjusting part and installs on the manhole door, stretches out height adjustment adjusting part according to proximity switch's button to obtain best switch effect. The proximity switch and the safety indicating device are connected in parallel in the low-voltage control circuit, and the low-voltage control circuit controls whether the high-voltage system is conducted or not according to the switching condition of the proximity switch. In the application, when the manhole door is opened, the low-voltage control circuit is disconnected, the safety indicating device is in a working state, and the high-voltage system cannot be started; when the manhole door is closed and locked, the low-voltage control line is conducted, the safety indicating device is in an out-of-operation state, and the high-voltage system can be started.
Through the electric interlocking safety device that this application provided, when can guaranteeing that maintainer gets into the electric field, high-voltage system has broken off, withdraws from the electric field at maintainer after, high-voltage system just can start, and furthest reduces the interference that artificial factor opened and stops high-voltage system to improve the security performance of manhole door, guarantee maintainer's personal safety.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an electrically interlocked safety device provided by an embodiment of the present application;
fig. 2 is an electrical control schematic diagram of a 6-person door according to an embodiment of the present disclosure.
Detailed Description
The application provides an electrical interlocking safety device, electrical interlocking safety circuit and manhole door, through installing electrical interlocking safety device in manhole door side, when the manhole door is opened, high-voltage system can't start, when manhole door closed locking, high-voltage system could open, whether close interlocking high-voltage system through electrical interlocking safety device completely and can open and stop, very big improvement the security. Meanwhile, a safety indicating device is arranged on a circuit of a proximity switch provided with the electric interlocking safety device, so that the proximity switch of the electric interlocking safety device is prevented from being failed, the phenomenon of misinformation is avoided, and the safety of the system is further improved.
The invention of the application aims to: how to guarantee that the maintainer gets into the electric field when, high-voltage system has disconnected, withdraws from the electric field at the maintainer after, high-voltage system just can start, and furthest reduces the interference that artificial factor opened and stops high-voltage system to improve the security performance of manhole door, ensure maintainer's personal safety.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, an embodiment of the present application provides an electrical interlock safety device for controlling opening and closing of a manhole door, the electrical interlock safety device including: preforming 1, adjusting part 2, support frame 3 and proximity switch 4, wherein:
It should be noted that the adjusting member 2 can be adjusted according to the protruding height of the button of the proximity switch 4, so as to obtain the best switch effect.
Further, as shown in fig. 1, the electrical interlock safety device further includes:
and the safety indicating device 6 is arranged at a position close to the proximity switch 4 and is connected in parallel with the low-voltage control circuit, and the safety indicating device 6 is used for indicating the opening and closing state of the manhole door 5.
Preferably, in the embodiment of the present application, the safety indicator 6 is a safety indicator lamp.
The electric interlocking safety device that this application embodiment provided, through installing proximity switch on the support frame in manhole door side, proximity switch button stretches out height-adjustable, and the preforming passes through the adjusting part to be installed on the manhole door, stretches out height-adjusting part according to proximity switch's button to obtain best switch effect. The proximity switch and the safety indicating device are connected in parallel in the low-voltage control circuit, and the low-voltage control circuit controls whether the high-voltage system is conducted or not according to the switching condition of the proximity switch. In the embodiment of the application, when the manhole door is opened, the low-voltage control circuit is disconnected, the safety indicating device is in a working state, and the high-voltage system cannot be started; when the manhole door is closed and locked, the low-voltage control line is conducted, the safety indicating device is in an out-of-operation state, and the high-voltage system can be started.
Through the electric interlocking safety device that this application embodiment provided, when can guaranteeing that maintainer gets into the electric field, high-voltage system has broken off, withdraws from the electric field at maintainer after, high-voltage system just can start, and furthest reduces the interference that artificial factor opened the high-voltage system and stops to improve the security performance of manhole door, guarantee maintainer's personal safety.
The embodiment of the application also discloses electric interlocking safety circuit, including electric interlocking safety device, power supply, fuse, relay and cabling, electric interlocking safety device includes: proximity switch, support frame, preforming, adjusting part and safety indicating device, wherein:
the input end of the power supply is connected to the electric interlocking safety circuit and is divided into at least two paths after passing through the fuse, one path is connected to the relay and then is connected with an auxiliary contact of a proximity switch in the electric interlocking safety device, the other paths are connected to a safety indicating device after passing through the relay, and all the paths are combined and then are connected to the output end of the power supply;
when the high-voltage system works normally, the manhole door is in a closed state, the auxiliary contact of the proximity switch is closed, the relay is in a power-on state, the auxiliary contact of the relay is closed to control the high-voltage system to be switched on, the auxiliary contact of the relay of the safety indicating device circuit is switched off, and the safety indicating device is in an out-of-operation state;
when the high-voltage system needs to be overhauled, the manhole door is in an open state, the auxiliary contact of the proximity switch is disconnected, the relay is in a non-electrified state, then the auxiliary contact of the relay is disconnected, the high-voltage system is controlled to be disconnected, the auxiliary contact of the relay of the safety indicating device circuit is closed, and the safety indicating device is in a working state.
As shown in fig. 2, in the embodiment of the present application, the operation process of the electrical interlock safety device will be specifically described by taking 6 manhole doors as an example:
an electric interlocking safety circuit of the electric dust collector is shown in fig. 2, an input end AC1 of a power supply is connected into the electric interlocking safety circuit, the electric interlocking safety circuit is divided into 6 paths after passing through a fuse FU, one path of the relay is connected with a relay KA and then sequentially passes through auxiliary contacts K1-K6 of proximity switches on various manhole doors, the other five paths of the relay are respectively connected with safety indication devices H1-H6 after passing through the auxiliary contacts of the relay KA, and finally the six paths of the relay are combined and then connected to an output end AC2 of the power supply.
It should be noted that, when all the proximity switch auxiliary contacts K1-K6 on each manhole door are in a closed state, the relay KA can be energized, the 1# high-voltage control circuit and the 2# high-voltage control circuit can be started, the lines of the safety indicating devices H1-H6 are not passed, and the safety indicating devices H1-H6 do not work; if one of the proximity switch auxiliary contacts K1-K6 on each manhole door is in an off state, the relay KA is not electrified, the 1# high-voltage control circuit and the 2# high-voltage control circuit cannot be started, the lines of the safety indicating devices H1-H6 are conducted, and the safety indicating devices H1-H6 work.
In the embodiment of the present application, 6 manhole doors are taken as an example, however, since the number of manhole doors and the number of electric fields are different, it should be noted that the number of proximity switches should be always the same as the number of manhole doors and the number of safety indication states.
It should be emphasized that the on-off relationship between the proximity switch of the manhole door and the high-voltage system is not limited to the above description, and may be flexibly modified according to the actual situation as long as the effect of the embodiment of the present application is achieved.
On the basis of the above-mentioned electric interlocking safety circuit that discloses, this application embodiment has still disclosed a manhole door, this manhole door includes above-mentioned electric interlocking safety circuit, wherein:
the electrical interlocking safety circuit comprises an electrical interlocking safety device, a power supply, a fuse, a relay and a laid cable, wherein the electrical interlocking safety device comprises: proximity switch, support frame, preforming, adjusting part and safety indicating device, wherein:
the input end of the power supply is connected to the electric interlocking safety circuit and is divided into at least two paths after passing through the fuse, one path is connected to the relay and then is connected with an auxiliary contact of a proximity switch in the electric interlocking safety device, the other paths are connected to a safety indicating device after passing through the relay, and all the paths are combined and then are connected to the output end of the power supply;
when the high-voltage system works normally, the manhole door is in a closed state, the auxiliary contact of the proximity switch is closed, the relay is in a power-on state, the auxiliary contact of the relay is closed to control the high-voltage system to be switched on, the auxiliary contact of the relay of the safety indicating device circuit is switched off, and the safety indicating device is in an out-of-operation state;
when the high-voltage system needs to be overhauled, the manhole door is in an open state, the auxiliary contact of the proximity switch is disconnected, the relay is in a non-electrified state, then the auxiliary contact of the relay is disconnected, the high-voltage system is controlled to be disconnected, the auxiliary contact of the relay of the safety indicating device circuit is closed, and the safety indicating device is in a working state.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (5)
1. An electrically interlocked safety device for controlling opening and closing of a manhole door, comprising: preforming, adjusting part, support frame and proximity switch, wherein:
the proximity switch is arranged on the support frame on the side surface of the manhole door, and the extending height of a button of the proximity switch is adjustable;
the pressing sheet is installed on the manhole door through the adjusting piece, and the adjusting piece is adjusted according to the extending height of the button of the proximity switch;
the proximity switch is connected in parallel in a low-voltage control circuit and used for controlling the opening and closing of the electric interlocking safety device, and the low-voltage control circuit controls the connection and disconnection of a high-voltage system according to the switching condition of the proximity switch.
2. The electrically interlocked safety device of claim 1, further comprising:
the safety indicating device is arranged at a position close to the proximity switch and connected in parallel in the low-voltage control circuit, and is used for indicating the opening and closing states of the manhole door.
3. The electrically interlocked safety device of claim 2, wherein the safety indicator device is a safety light.
4. An electrically interlocked safety circuit comprising the electrically interlocked safety device of any one of claims 1-3, a power supply source, a fuse, a relay, and cabling, the electrically interlocked safety device comprising: proximity switch, support frame, preforming, adjusting part and safety indicating device, wherein:
the input end of the power supply is connected to the electric interlocking safety circuit and is divided into at least two paths after passing through the fuse, one path is connected to the relay and then is connected with an auxiliary contact of a proximity switch in the electric interlocking safety device, the other paths are connected to a safety indicating device after passing through the relay, and all the paths are combined and then are connected to the output end of the power supply;
when the high-voltage system works normally, the manhole door is in a closed state, the auxiliary contact of the proximity switch is closed, the relay is in a power-on state, the auxiliary contact of the relay is closed to control the high-voltage system to be switched on, the auxiliary contact of the relay of the safety indicating device circuit is switched off, and the safety indicating device is in a non-working state;
when the high-voltage system needs to be overhauled, the manhole door is in an open state, the auxiliary contact of the proximity switch is disconnected, the relay is in a non-electrified state, then the auxiliary contact of the relay is disconnected, the high-voltage system is controlled to be disconnected, the auxiliary contact of the relay of the safety indicating device circuit is closed, and the safety indicating device is in a working state.
5. A manhole door comprising the electrically interlocked safety circuit of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021183832.9U CN213435048U (en) | 2020-06-23 | 2020-06-23 | Electric interlocking safety device, electric interlocking safety circuit and manhole door |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021183832.9U CN213435048U (en) | 2020-06-23 | 2020-06-23 | Electric interlocking safety device, electric interlocking safety circuit and manhole door |
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| CN213435048U true CN213435048U (en) | 2021-06-15 |
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| CN202021183832.9U Active CN213435048U (en) | 2020-06-23 | 2020-06-23 | Electric interlocking safety device, electric interlocking safety circuit and manhole door |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115029499A (en) * | 2022-06-13 | 2022-09-09 | 北京首钢股份有限公司 | Converter flue gas treatment system and maintenance method |
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2020
- 2020-06-23 CN CN202021183832.9U patent/CN213435048U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115029499A (en) * | 2022-06-13 | 2022-09-09 | 北京首钢股份有限公司 | Converter flue gas treatment system and maintenance method |
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