CN217280588U - Contactor contact adhesion prevention alarm circuit - Google Patents
Contactor contact adhesion prevention alarm circuit Download PDFInfo
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- CN217280588U CN217280588U CN202220386414.2U CN202220386414U CN217280588U CN 217280588 U CN217280588 U CN 217280588U CN 202220386414 U CN202220386414 U CN 202220386414U CN 217280588 U CN217280588 U CN 217280588U
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Abstract
The utility model belongs to the technical field of alarm circuit, especially, relate to an antiseized even alarm circuit of contactor contact, including first switch circuit, contactor and load circuit, first switch circuit's first end and commercial power connection, the coil of contactor still with first switch circuit's second end is connected, load circuit with the contactor is connected, still includes: an intermediate relay circuit connected to the contactor; the alarm circuit, alarm circuit and commercial power the contactor with the auxiliary relay circuit is all connected, during the adhesion of contactor contact, the commercial power the alarm circuit the contactor with the auxiliary relay circuit forms and switches on the return circuit, alarm circuit work is in order to provide the warning. The utility model discloses the motor that can avoid using this contactor load surpasss the situation of spacing operation or electric heater dry combustion method to can effectively prevent the emergence of incident.
Description
Technical Field
The utility model belongs to the technical field of alarm circuit, especially, relate to an antiseized even alarm circuit of contactor contact.
Background
The contactor is mostly applied to electric power, power distribution and power utilization occasions. The contactor is an electrical appliance which utilizes a coil to flow current to generate a magnetic field in industrial electricity to close a contact so as to control a load. The contactor has the working principle that after a coil of the contactor is electrified, the coil current generates a magnetic field, the generated magnetic field enables a static iron core to generate electromagnetic attraction to attract a movable iron core and drive an alternating current contactor to act, a normally closed contact is opened, a normally open contact is closed, and the normally closed contact and the normally open contact are in linkage fit.
However, the contactor on the market at present has the condition of contact adhesion when using, and then leads to the circuit to be in unsafe state, easily leads to using the motor of this contactor load to exceed spacing operation, or leads to electric heater dry combustion method, and then leads to the emergence of incident.
Therefore, it is necessary to design an anti-adhesion alarm circuit for the contact of the contactor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an antiseized even warning circuit of contactor contact, do not report to the police when aiming at solving the contact adhesion of contactor among the prior art and remind the technical problem who leads to producing the incident.
In order to achieve the above object, an embodiment of the present invention provides an anti-adhesion alarm circuit for contactor contacts, including a first switch circuit, a contactor and a load circuit, the first end of the first switch circuit is connected to the mains supply, the contactor is connected to the mains supply, the coil of the contactor is further connected to the second end of the first switch circuit, the load circuit is connected to the contactor, and further includes:
an intermediate relay circuit connected to the contactor;
alarm circuit, alarm circuit and commercial power contactor with the auxiliary relay circuit is all connected, when the contactor contact adhesion, the commercial power the alarm circuit contactor with the auxiliary relay circuit forms the circuit that switches on, alarm circuit work is in order to provide the warning.
Optionally, the auxiliary relay circuit includes auxiliary relay, the both ends of auxiliary relay's coil respectively with the coil connection of contactor, the coil of contactor still with first switch circuit connects, the one end of auxiliary relay's normally closed contact with the one end of the normally open contact of contactor is connected, auxiliary relay's normally closed contact's the other end with alarm circuit connects, the normally open contact's of contactor the other end with alarm circuit connects.
Optionally, the first switch circuit includes a control relay, one end of the control relay is connected to the mains supply, and the other end of the control relay is connected to the coil of the contactor.
Optionally, the alarm circuit includes power supply conversion device and alarm indicator, power supply conversion device is connected with the commercial power, power supply conversion device still with the other end of the normally open contact of contactor is connected, alarm indicator with power supply conversion device connects, alarm indicator still with the other end of the normally closed contact of auxiliary relay is connected.
Optionally, the alarm indicator is an audible and visual alarm, a single audible alarm or a single alarm lamp alarm.
Optionally, the load circuit comprises an electric motor, the electric motor being connected to the contactor.
Optionally, the load circuit includes an electric heater connected to the contactor.
Alternatively, the electric heater may be plural in number.
The embodiment of the utility model provides an above-mentioned one or more technical scheme among the antiseized even warning circuit of contactor contact has one of following technological effect at least:
contactor contact antiseized even warning circuit is in contactor normal operating condition, the commercial power contactor first switch circuit with load circuit forms the turn-on circuit, warning circuit is out of work this moment warning circuit does not report to the police when contactor normal operating condition, when contactor contact adhesion, the commercial power contactor with the auxiliary relay circuit forms the turn-on circuit, warning circuit work is in order to provide the warning, and then realizes alarm instruction, realizes the condition that can effectively discern contactor main contact and switch on when non-operating condition to in time send out the police dispatch newspaper, the motor that can avoid using this contactor load surpasss spacing operation or the condition that electric heater burns futilely to can effectively prevent the emergence of incident.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is the embodiment of the utility model provides an antiseized even warning circuit's of contactor contact overall circuit schematic diagram.
Wherein, in the figures, the various reference numbers:
100. a first switching circuit; 200. a load circuit; 300. an intermediate relay circuit; 400. and an alarm circuit.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the embodiments of the present invention, and should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In an embodiment of the utility model, as shown in fig. 1, provide an antiseized even warning circuit 400 of contactor contact, including first switch circuit 100, contactor KM1 and load circuit 200, the first end and the commercial power connection of first switch circuit 100, contactor KM1 and commercial power connection, contactor KM 1's coil still with the second end of first switch circuit 100 is connected, load circuit 200 with contactor KM1 connects.
The anti-adhesion alarm circuit 400 for the contactor contacts further comprises an intermediate relay circuit 300 and an alarm circuit 400, wherein the intermediate relay circuit 300 is connected with the contactor KM 1; alarm circuit 400 and commercial power contactor KM1 with intermediate relay circuit 300 all connects, when contactor KM1 contact adhesion, the commercial power the alarm circuit 400 contactor KM1 with intermediate relay circuit 300 forms the conducting circuit, alarm circuit 400 works in order to provide the warning.
Contactor contact antiseized even warning circuit 400 is in contactor KM1 normal operating, the commercial power contactor KM1 first switch circuit 100 with load circuit 200 forms the circuit that switches on, warning circuit 400 is out of work, this moment warning circuit 400 does not report to the police when contactor KM1 normal operating condition, when the adhesion of contactor contact, the commercial power warning circuit 400 the contactor with intermediate relay circuit 300 forms the circuit that switches on, warning circuit 400 work is in order to provide the warning, and then realizes alarm indication, realizes the condition that can effectively discern contactor main contact and switch on when the non-operating condition to in time send out the police dispatch newspaper, can avoid using the motor of this contactor load to exceed the situation that spacing operation or electric heater dry combustion method to can effectively prevent the emergence of incident.
In another embodiment of the present invention, as shown in fig. 1, the intermediate relay circuit 300 includes an intermediate relay KA, two ends of the coil KM of the intermediate relay KA are respectively connected to the coil of the contactor KM1, and the coil of the contactor KM1 is further connected to the first switch circuit 100. In this example, the coils of the contactor KM1 were labeled a1 and a 2. One end of a normally closed contact NC of the intermediate relay KA is connected with one end of a normally open contact NO of the contactor KM1, the other end of the normally closed contact NC of the intermediate relay KA is connected with the alarm circuit 400, and the other end of the normally open contact NO of the contactor KM1 is connected with the alarm circuit 400.
The intermediate relay KA is used for being matched with the contactor KM1 to work when the contact of the contactor KM1 is adhered, so that the alarm circuit 400 is guaranteed to be conducted, and timely alarm is achieved.
In another embodiment of the present invention, as shown in fig. 1, the first switching circuit 100 comprises a control relay KC, one end of the control relay KC is connected to the mains, and the other end of the control relay KC is connected to the coil of the contactor KM 1. Specifically, control of multiple layers is realized by arranging the control relay KC, the control safety is improved, control of the contactor KM1 is carried out in multiple layers, and the reliability is improved.
In another embodiment of the present invention, as shown in fig. 1, the alarm circuit 400 includes a power supply conversion device PE and an alarm indicator HA, the power supply conversion device is connected to the mains, the power supply conversion device PE is further connected to the other end of the normally open contact NO of the contactor KM1, the alarm indicator HA is connected to the power supply conversion device PE, and the alarm indicator HA is further connected to the other end of the normally closed contact NC of the intermediate relay KA. Specifically, the power supply conversion device PE is configured to introduce commercial power, and supply power to the alarm indicator HA when the contactor KM1 and the intermediate relay KA are turned on, so as to realize alarm.
In another embodiment of the present invention, the alarm indicator HA is an audible and visual alarm, a single audible alarm or a single alarm lamp alarm. During actual setting, an audible and visual alarm, a single audible alarm or a single alarm lamp alarm are arranged as required, so that different application scenes can be compatible.
In the utility model discloses a further embodiment, except inserting the alarm, also can trigger the circuit breaker tripping operation disconnection by the shunt coil that technical person in the field feedbacks alarm signal to the circuit breaker as required to disconnection motor or electric heater load prevents unexpected the emergence, and protection equipment and personnel's safety sets up the circuit by oneself as required by technical person in the field to this, and this application does not do specifically describe.
In another embodiment of the present invention, as shown in fig. 1, the load circuit 200 includes a motor M connected to the contactor KM 1. When the contactor KM1 works normally, the contactor KM1 is conducted, and mains supply supplies power to the motor M through a control relay KC and the contactor KM1, so that the normal work of the motor M is ensured.
In another embodiment of the present invention, the load circuit 200 includes an electric heater RJ connected with the contactor KM 1.
In another embodiment of the present invention, the number of the electric heaters RJ is plural. The RJ of the electric heater can meet the use requirement through the on-demand realization.
Further, the operating principle of the anti-adhesion alarm circuit 400 for the contactor contact is as follows:
when the contactor KM1 is in a normal working power-on state, the coils A1 and A2 of the contactor KM1 are driven by the control relay KC to be connected with a voltage of 220V, the main contact of the contactor KM1 is conducted, and the normally open contact NO of the contactor KM1 is electrified and closed. Meanwhile, a control coil of the intermediate relay KA is energized, a normally closed contact NC of the intermediate relay KA is energized and disconnected, the commercial power, the alarm circuit 400, the contactor KM1 and the intermediate relay circuit 300 form a loop, and the loop is not conducted because the normally closed contact NC of the intermediate relay KA is energized and disconnected, and the alarm circuit 400 does not work, that is, the contactor KM1 does not alarm when in a normal working and energized state.
When the contactor KM1 is in a normal working power-off state, the control relay KC is disconnected, the A1 and the A2 of the coil of the contactor KM1 lose power, the main contact of the contactor KM1 is disconnected, and the normally open contact NO of the contactor KM1 loses power and is disconnected, at the moment, a loop formed by the commercial power, the alarm circuit 400, the contactor KM1 and the intermediate relay circuit 300 is not conducted due to the fact that the normally open contact NO of the contactor KM1 loses power and is disconnected, the alarm circuit 400 does not work, and the fact that the contactor KM1 does not alarm when in a normal working power-off state is achieved.
When the contactor KM1 is in a power-off state, if the main contacts of the contactor KM1 are adhered, at this time, the control relay KC is turned off, and because the coils a1 and a2 of the contactor KM1 are independent circuits and are not affected by the adhesion of the main contacts of the contactor KM1, the coils a1 and a2 of the contactor KM1 are powered off, but because the main contact of the contactor KM1 is still in an adhesion conduction state due to a fault, the normally open contact NO of the contactor KM1 is accidentally conducted along with the adhesion of the main contacts of the contactor KM1, so that the commercial power, the alarm circuit 400, the contactor KM1 and the intermediate relay circuit 300 form a conduction loop, the alarm circuit 400 works to provide an alarm, at this time, in the case that the main contacts of the contactor KM1 are adhered, the alarm circuit 400 works to remind a user to timely issue an alarm, the situation that a motor using the contactor load runs beyond a limit position or an electric heater is dried can be avoided, so that safety accidents can be effectively prevented.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides an antiseized even warning circuit of contactor contact, includes first switch circuit, contactor and load circuit, first switch circuit's first end and mains connection, contactor and mains connection, the coil of contactor still with first switch circuit's second end is connected, load circuit with the contactor is connected, its characterized in that still includes:
an intermediate relay circuit connected to the contactor;
the alarm circuit, alarm circuit and commercial power the contactor with the auxiliary relay circuit is all connected, during the adhesion of contactor contact, the commercial power the alarm circuit the contactor with the auxiliary relay circuit forms and switches on the return circuit, alarm circuit work is in order to provide the warning.
2. The anti-adhesion alarm circuit for the contactor contacts according to claim 1, wherein the intermediate relay circuit comprises an intermediate relay, two ends of a coil of the intermediate relay are respectively connected with the coil of the contactor, the coil of the contactor is further connected with the first switch circuit, one end of a normally closed contact of the intermediate relay is connected with one end of a normally open contact of the contactor, the other end of the normally closed contact of the intermediate relay is connected with the alarm circuit, and the other end of the normally open contact of the contactor is connected with the alarm circuit.
3. The anti-adhesion alarm circuit for the contactor contacts as claimed in claim 2, wherein the first switch circuit comprises a control relay, one end of the control relay is connected with a mains supply, and the other end of the control relay is connected with the coil of the contactor.
4. The anti-adhesion alarm circuit for the contactor contacts as claimed in claim 3, wherein the alarm circuit comprises a power supply conversion device and an alarm indicator, the power supply conversion device is connected with a mains supply, the power supply conversion device is further connected with the other end of the normally open contact of the contactor, the alarm indicator is connected with the power supply conversion device, and the alarm indicator is further connected with the other end of the normally closed contact of the intermediate relay.
5. The anti-adhesion alarm circuit for the contactor contact according to claim 4, wherein the alarm indicator is an audible and visual alarm, a single audible alarm or a single alarm lamp alarm.
6. The contactor contact adhesion prevention warning circuit of any one of claims 1-5, wherein the load circuit comprises a motor, the motor being connected to the contactor.
7. The anti-adhesion warning circuit of contactor contacts as claimed in any one of claims 1 to 5, wherein the load circuit comprises an electric heater connected to the contactor.
8. The anti-adhesion alarm circuit for the contactor contacts as claimed in claim 7, wherein the number of the electric heaters is plural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220386414.2U CN217280588U (en) | 2022-02-24 | 2022-02-24 | Contactor contact adhesion prevention alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220386414.2U CN217280588U (en) | 2022-02-24 | 2022-02-24 | Contactor contact adhesion prevention alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217280588U true CN217280588U (en) | 2022-08-23 |
Family
ID=82857430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220386414.2U Active CN217280588U (en) | 2022-02-24 | 2022-02-24 | Contactor contact adhesion prevention alarm circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217280588U (en) |
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2022
- 2022-02-24 CN CN202220386414.2U patent/CN217280588U/en active Active
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