CN212012129U - Power transmission self-starting circuit after power failure and coal mine bathing system - Google Patents
Power transmission self-starting circuit after power failure and coal mine bathing system Download PDFInfo
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- CN212012129U CN212012129U CN202020629863.6U CN202020629863U CN212012129U CN 212012129 U CN212012129 U CN 212012129U CN 202020629863 U CN202020629863 U CN 202020629863U CN 212012129 U CN212012129 U CN 212012129U
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Abstract
The application relates to a power transmission self-starting circuit and colliery bathing system after outage, wherein, power transmission self-starting circuit includes after the outage: time relay, contactor, start button, stop button. The contactor includes: the contactor comprises a contactor main contact, a contactor normally open contact and a contactor coil. The time relay, the contactor normally open contact and the start button are connected in parallel; the time relay is respectively connected with the positive pole of the power supply, the stop button and the negative pole of the power supply; the normally open contact of the contactor is respectively connected with the positive electrode of the power supply and the stop button; the main contact of the contactor is respectively connected with the positive electrode of a power supply and the circulating pump; the start button is respectively connected with the positive pole of the power supply and the stop button; the stop button is connected with the contactor coil; the coil of the contactor is respectively connected with the negative pole of the power supply and the circulating pump. When the system is powered off and then powered on again, the time relay acts, a starting signal is instantly applied to the starting button to start the circulating pump, the starting signal is only maintained for 1S, the time relay breaks the starting signal and does not influence the normal operation of the system, and the circulating pump drives the heat pump hot water unit to operate after being started.
Description
Technical Field
The application relates to the technical field of coal mine bathing systems, in particular to a power transmission self-starting circuit after power failure and a coal mine bathing system.
Background
In the prior art, an air-cooled heat pump hot water unit is adopted by a coal mine bathing system to supply hot water for the bathing system, and a hot water circulating system adopts the traditional button start-stop control to control the start-stop of a circulating pump. Due to the special conditions of coal mines, more than three times of hot water needs to be prepared every day, a circulating pump is required to operate continuously, and unattended operation is required to be realized during normal operation. The power failure condition of a power supply system can happen occasionally when the coal mine is in normal production, a circulating pump cannot be automatically started after power failure and power re-supply, and a heat pump hot water unit cannot automatically run due to the fact that the circulating pump is not started and cannot continuously prepare hot water.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the related art at least to a certain extent, the application provides a power transmission self-starting circuit and a coal mine bathing system after power failure.
The scheme of the application is as follows:
according to a first aspect of the embodiments of the present application, there is provided a power transmission self-starting circuit after power failure, including:
the device comprises a time relay, a contactor, a start button and a stop button;
the contactor includes: the contactor comprises a contactor main contact, a contactor normally open contact and a contactor coil;
the time relay, the contactor normally open contact and the starting button are connected in parallel;
the time relay is respectively connected with the positive electrode of the power supply and the stop button; the time relay is also connected with the negative electrode of the power supply;
the normally open contact of the contactor is respectively connected with the positive electrode of the power supply and the stop button; the main contact of the contactor is respectively connected with the positive electrode of the power supply and the circulating pump;
the starting button is respectively connected with the positive electrode of the power supply and the stopping button;
the stop button is connected with the contactor coil;
and the coil of the contactor is respectively connected with the negative electrode of the power supply and the circulating pump.
Preferably, in an implementable manner of the present application, the time relay includes: a time relay coil and a time relay normally closed contact;
the time relay normally closed contact, the contactor normally open contact and the starting button are connected in parallel;
the normally closed contact of the time relay is respectively connected with the positive electrode of the power supply and the stop button;
and the time relay coil is respectively connected with the positive electrode of the power supply and the negative electrode of the power supply.
Preferably, in an implementation manner of the present application, the method further includes: a first circuit protector;
the time relay coil, time relay normally closed contact, contactor normally open contact, start button all passes through first circuit protector connects the power positive pole.
Preferably, in an implementation manner of the present application, the method further includes: a second circuit protector;
the time relay coil and the time relay normally closed contact are connected with the first circuit protector through the second circuit protector.
Preferably, in an implementable manner of the present application, the first and second circuit protectors are fuses or single phase air switches.
Preferably, in an implementation manner of the present application, the method further includes: a thermal overload relay;
the thermal overload relay includes: the thermal overload relay comprises a main contact of the thermal overload relay and a normally closed contact of the thermal overload relay;
the stop button is connected with the circulating pump contactor coil through the normally closed contact of the thermal overload relay.
Preferably, in an implementable manner herein,
and the main contact of the contactor is connected with the circulating pump through the main contact of the thermal overload relay.
Preferably, in an implementation manner of the present application, the method further includes: a circuit breaker;
and the main contact of the contactor is connected with the positive pole of the power supply through the circuit breaker.
Preferably, in an implementable manner of the present application, the delay time of the time relay is set to be in a range of 1s-2 s.
According to a second aspect of embodiments of the present application, there is provided a coal mine bathing system comprising: the power supply, the circulating pump and the power-on self-starting circuit after power failure.
The technical scheme provided by the application can comprise the following beneficial effects: power transmission is from start-up circuit after outage in this application includes: time relay, contactor, start button, stop button. The contactor includes: the contactor comprises a contactor main contact, a contactor normally open contact and a contactor coil. The time relay, the contactor normally open contact and the start button are connected in parallel; the time relay is respectively connected with the positive pole of the power supply, the stop button and the negative pole of the power supply; the normally open contact of the contactor is respectively connected with the positive electrode of the power supply and the stop button; the main contact of the contactor is respectively connected with the positive electrode of a power supply and the circulating pump; the start button is respectively connected with the positive pole of the power supply and the stop button; the stop button is connected with the contactor coil; the coil of the contactor is respectively connected with the negative pole of the power supply and the circulating pump. When the system is powered off and then powered on again, the time relay acts, a starting signal is instantly applied to the starting button to start the circulating pump, the starting signal is only maintained for 1S, the time relay breaks the starting signal and does not influence the normal operation of the system, and the circulating pump drives the heat pump hot water unit to operate after being started.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a circuit configuration diagram of a power transmission self-starting circuit after power failure according to an embodiment of the present application;
fig. 2 is a schematic current flow diagram illustrating a power-on self-starting circuit after power failure when a start button is normally pressed;
fig. 3 is a schematic diagram illustrating a current flow after a power-off power transmission self-starting circuit normally presses a start button according to an embodiment of the present application;
fig. 4 is a schematic current flow diagram illustrating a power-off and power-on self-starting circuit according to an embodiment of the present application when power is off and then power is supplied again;
fig. 5 is a schematic current flow diagram of a power transmission self-starting circuit after power failure and power re-transmission according to an embodiment of the present application;
fig. 6 is a circuit configuration diagram of a post-power-off power transmission self-start circuit according to another embodiment of the present application.
Description of the drawings: a time relay-1; a contactor-2; contactor main contact-21; contactor normally open contact-22; a contactor coil-23; start button-3; stop button-4; a circulating pump-5; a first circuit protector-6; a second circuit protector-7; a thermal overload relay-8; thermal overload relay main contact-81; a normally closed contact-82 of the thermal overload relay; a breaker-9.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
Fig. 1 is a circuit configuration diagram of a power transmission self-start circuit after power failure according to an embodiment of the present application, and referring to fig. 1, a power transmission self-start circuit after power failure includes:
the time relay 1, the contactor 2, the start button 3 and the stop button 4;
the contactor 2 includes: a contactor main contact 21, a contactor normally open contact 22, a contactor coil 23;
the time relay 1, the contactor normally open contact 22 and the start button 3 are connected in parallel;
the time relay 1 is respectively connected with the positive pole of a power supply and a stop button 4; the time relay 1 is also connected with the negative electrode of the power supply;
the normally open contact 22 of the contactor is respectively connected with the positive electrode of the power supply and the stop button 4; the main contact 21 of the contactor is respectively connected with the positive pole of a power supply and the circulating pump 5;
the start button 3 is respectively connected with the positive pole of the power supply and the stop button 4;
the stop button 4 is connected with the contactor coil 23;
the contactor coil 23 is connected to the negative electrode of the power supply and the circulation pump 5, respectively.
The time relay 1, the contactor, the start button 3 and the stop button 4 are all common electrical elements in the prior art.
The start button 3 is used to generate a start signal to start the circulation pump 5 when pressed.
The stop button 4 is used to generate a stop signal to stop the circulation pump 5 when pressed.
The power transmission self-starting circuit after power failure in this embodiment includes: time relay 1, contactor, start button 3, stop button 4.
The contactor includes: contactor main contact 21, contactor normally open contact 22, and contactor coil 23.
Wherein, the time relay 1, the contactor normally open contact 22 and the start button 3 are connected in parallel; the time relay 1 is respectively connected with the positive pole of a power supply, a stop button 4 and the negative pole of the power supply, and the stop button 4 is a normally closed switch; the normally open contact 22 of the contactor is respectively connected with the positive electrode of the power supply and the stop button 4; the main contact 21 of the contactor is respectively connected with the positive pole of a power supply and the circulating pump 5; the start button 3 is respectively connected with the positive pole of the power supply and the stop button 4; the stop button 4 is connected with the contactor coil 23; the contactor coil 23 is connected to the negative electrode of the power supply and the circulation pump 5, respectively. Referring to fig. 2 to 3, fig. 2 is a current flow diagram when the circulation pump 5 is started by normally pressing the start button 3. Fig. 3 is a circuit current flow diagram after startup is completed.
When the system is powered off and then powered on again, referring to the current trend shown in fig. 4, the time relay 1 acts, a starting signal is instantly applied to the starting button 3 to start the circulating pump 5, the starting signal is maintained for only 1S, the time relay 1 cuts off the starting signal, referring to the current trend shown in fig. 5, after the subsequent power failure, the power supply self-starting circuit enters a normal working state, the normal operation of the system is not influenced, and the circulating pump 5 drives the heat pump hot water unit to operate after being started.
In the power-on self-start circuit after power-off in some embodiments, referring to fig. 6, the time relay 1 includes: a coil of the time relay 1 and a normally closed contact of the time relay 1;
the time relay 1 normally closed contact, the contactor normally open contact 22 and the start button 3 are connected in parallel;
the normally closed contact of the time relay 1 is respectively connected with the positive electrode of a power supply and a stop button 4;
the coil of the time relay 1 is respectively connected with the positive pole and the negative pole of the power supply.
When the system is powered off and then power is supplied again, current flows from the positive pole of the power supply to the negative pole of the power supply through the coil of the time relay 1. The other branch of the current flows through the normally closed contact of the time relay 1, then flows through the stop button 4 and then flows to the negative electrode of the power supply.
The power-on self-starting circuit after power-off in some embodiments, with reference to fig. 6, further includes: a first circuit protector 6;
the coil of the time relay 1, the normally closed contact of the time relay 1, the normally open contact 22 of the contactor and the start button 3 are all connected with the positive pole of the power supply through the first circuit protector 6.
Further, referring to fig. 6, the method further includes: a second circuit protector 7;
the coil of the time relay 1 and the normally closed contact of the time relay 1 are connected with a first circuit protector 6 through a second circuit protector 7.
The first circuit protector 6 and the second circuit protector 7 may be, but are not limited to, fuses or single phase air switches.
The first circuit protector 6 and the second circuit protector 7 can prevent the system power supply from being cut off when the control system is short-circuited and the system is maintained.
The second circuit protector 7 can also control whether the system is started and powered off and then the power transmission self-starting circuit is powered on. Specifically, when the second circuit protector 7 is turned on, the second circuit protector 7 works normally, and the power transmission self-starting circuit after power failure can be started by manually pressing the start button 3, and can also be self-started when power is re-transmitted after power failure. When the second circuit protector 7 is disconnected, the current cannot reach the time relay 1, the power transmission self-starting circuit after power failure can only be started by manually pressing the starting button 3, and the power transmission self-starting circuit cannot be self-started when power is re-transmitted after power failure.
The power-on self-starting circuit after power-off in some embodiments, with reference to fig. 6, further includes: a thermal overload relay 8;
the thermal overload relay 8 includes: a thermal overload relay main contact 81 and a thermal overload relay normally closed contact 82;
Further, the contactor main contact 21 is connected to the circulation pump 5 through a thermal overload relay main contact 81.
The thermal overload relay is an overload relay which applies the principle of current thermal effect and takes an electrical thermosensitive bimetallic strip as a sensitive element, and is also called as a thermal relay. The electric heat-sensitive bimetallic strip is made up by using two kinds of alloy whose linear expansion coefficients are different from each other and adopting the processes of heating and rolling. When heated, the bimetallic strip bends from the high expansion layer (active layer) to the low expansion layer (passive layer). When the current is too large (exceeds the setting value), the element acts due to 'heat', and the linked break contact cuts off the power supply of the controlled circuit and the protected equipment.
In this embodiment, the thermal overload relay 8 is mainly used for overload protection of the circulation pump 5.
The power-on self-starting circuit after power failure in some embodiments further comprises: a circuit breaker 9;
the contactor main contact 21 is connected to the positive pole of the power supply through the breaker 9.
The breaker 9 is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and closing, carrying, and opening/closing a current under an abnormal circuit condition for a predetermined time.
The circuit breaker 9 can be used to distribute electric energy, start the asynchronous motor infrequently, protect the power supply line and the motor, and automatically cut off the circuit when they have serious overload or short circuit and undervoltage faults, and the function is equivalent to the combination of a fuse switch and an over-and-under-heat relay.
In the power-off power-on self-starting circuit in some embodiments, the delay time of the time relay 1 is set to be in a range of 1s-2 s.
The delay time of the time relay 1 can not be too long or too short, the delay time range of the time relay 1 is set to be 1s-2s, and the circulating pump 5 can be started in a shorter time when the power transmission self-starting circuit supplies power again after the system is powered off.
A coal mine bathing system comprising: the power supply, the circulation pump 5, and the power-on self-starting circuit as in any of the above embodiments.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. The utility model provides a power transmission is from start-up circuit after outage which characterized in that includes:
the device comprises a time relay, a contactor, a start button and a stop button;
the contactor includes: the contactor comprises a contactor main contact, a contactor normally open contact and a contactor coil;
the time relay, the contactor normally open contact and the starting button are connected in parallel;
the time relay is respectively connected with the positive electrode of the power supply and the stop button; the time relay is also connected with the negative electrode of the power supply;
the normally open contact of the contactor is respectively connected with the positive electrode of the power supply and the stop button; the main contact of the contactor is respectively connected with the positive electrode of the power supply and the circulating pump;
the starting button is respectively connected with the positive electrode of the power supply and the stopping button;
the stop button is connected with the contactor coil;
and the coil of the contactor is respectively connected with the negative electrode of the power supply and the circulating pump.
2. The post-power-off power-delivery self-starting circuit according to claim 1, wherein the time relay includes: a time relay coil and a time relay normally closed contact;
the time relay normally closed contact, the contactor normally open contact and the starting button are connected in parallel;
the normally closed contact of the time relay is respectively connected with the positive electrode of the power supply and the stop button;
and the time relay coil is respectively connected with the positive electrode of the power supply and the negative electrode of the power supply.
3. The post-power-off power-transmission self-starting circuit according to claim 2, further comprising: a first circuit protector;
the time relay coil, time relay normally closed contact, contactor normally open contact, start button all passes through first circuit protector connects the power positive pole.
4. The post-power-off power-transmission self-starting circuit according to claim 3, further comprising: a second circuit protector;
the time relay coil and the time relay normally closed contact are connected with the first circuit protector through the second circuit protector.
5. The post-power-outage power-transmission self-starting circuit according to claim 4, wherein the first circuit protector and the second circuit protector are fuses or single-phase air switches.
6. The post-power-off power-transmission self-starting circuit according to claim 4, further comprising: a thermal overload relay;
the thermal overload relay includes: the thermal overload relay comprises a main contact of the thermal overload relay and a normally closed contact of the thermal overload relay;
the stop button is connected with the circulating pump contactor coil through the normally closed contact of the thermal overload relay.
7. The power-on self-start circuit according to claim 6,
and the main contact of the contactor is connected with the circulating pump through the main contact of the thermal overload relay.
8. The post-power-off power-transmission self-starting circuit according to claim 5, further comprising: a circuit breaker;
and the main contact of the contactor is connected with the positive pole of the power supply through the circuit breaker.
9. The power-on self-starting circuit after power failure according to claim 1, wherein the delay time of the time relay is set within a range of 1s-2 s.
10. A coal mine bathing system, comprising: a power supply, a circulation pump, and a power-on self-start circuit as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020629863.6U CN212012129U (en) | 2020-04-23 | 2020-04-23 | Power transmission self-starting circuit after power failure and coal mine bathing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020629863.6U CN212012129U (en) | 2020-04-23 | 2020-04-23 | Power transmission self-starting circuit after power failure and coal mine bathing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212012129U true CN212012129U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020629863.6U Active CN212012129U (en) | 2020-04-23 | 2020-04-23 | Power transmission self-starting circuit after power failure and coal mine bathing system |
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| Country | Link |
|---|---|
| CN (1) | CN212012129U (en) |
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2020
- 2020-04-23 CN CN202020629863.6U patent/CN212012129U/en active Active
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