CN218183267U - Fault alarm device of variable frequency motor auxiliary fan - Google Patents
Fault alarm device of variable frequency motor auxiliary fan Download PDFInfo
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- CN218183267U CN218183267U CN202222631634.XU CN202222631634U CN218183267U CN 218183267 U CN218183267 U CN 218183267U CN 202222631634 U CN202222631634 U CN 202222631634U CN 218183267 U CN218183267 U CN 218183267U
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Abstract
The utility model provides a fault alarm device of a variable frequency motor auxiliary fan, belonging to the technical field of fan fault alarm; the problem that the existing variable frequency motor is directly connected with the auxiliary fan to cause fan failure is solved, wherein the variable frequency motor is stopped at the same time, so that equipment cannot work continuously; the intelligent control system comprises a main loop and a control loop, wherein a main switch QF is arranged on the main loop and connected with a power supply, a wire outlet end of the main switch QF is connected with a main motor of a frequency converter and an auxiliary fan motor in parallel, a contactor KM and a thermal relay FR are connected on the main loop of the auxiliary fan motor in series, and the control loop comprises a starting/stopping loop, a frequency converter control/input/output loop, an indicating loop, an alarm signal loop and a feedback signal loop; the alarm signal loop is formed by connecting a normally open contact of a thermal relay FR in series with an audible and visual alarm device, the normally closed contact loop of the thermal relay FR is connected in series with a coil of a contactor KM, and the normally open contact of the contactor KM is connected to a DCS controller; the utility model discloses be applied to the converter fan.
Description
Technical Field
The utility model provides a fault alarm device of inverter motor auxiliary fan belongs to fan fault alarm technical field.
Background
The variable frequency motor has the problem of large heat productivity in the operation process and needs to be additionally provided with an auxiliary cooling fan. The auxiliary fan is typically started and stopped simultaneously with the main motor, and in conventional auxiliary fan control, when the auxiliary motor is unexpectedly shut down, the auxiliary fan contactor is released, which causes the main motor to shut down. The existing variable frequency motor is simple in design, a single auxiliary fan fault processing method and an imperfect technology are adopted, and when an auxiliary fan of the variable frequency fan breaks down, a main motor is directly disconnected, so that the running of equipment is interrupted, and the requirement of the chemical industry on continuous and stable running of the equipment cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current inverter motor and auxiliary fan lug connection and lead to the fan trouble to be inverter motor and shut down the problem that makes the unable continuous operation of equipment simultaneously, provided an inverter motor auxiliary fan's fault alarm device.
In order to solve the technical problem, the utility model discloses a technical scheme be: a fault alarm device of an auxiliary fan of a variable frequency motor comprises a main loop and a control loop, wherein a main switch QF is arranged on the main loop and connected with a power supply, and a wire outlet end of the main switch QF is connected with a main motor of the variable frequency motor and an auxiliary fan motor in parallel;
the alarm signal loop is characterized in that a normally open contact of a thermal relay FR is connected with an acousto-optic alarm device in series, a normally closed contact loop of the thermal relay FR is connected with a coil of a contactor KM in series, and a normally open contact of the contactor KM is connected to an IO pin of a DCS controller;
the starting/stopping loop is connected with a starting switch SB1, a stopping switch SB2, a DCS parking contactor KA5 normally closed contact and a coil of a frequency converter main motor starting contactor KA1 in series, the starting switch SB1 is connected with a normally open contact of the frequency converter main motor starting contactor KA1 in parallel, a leading-out end of the DCS parking contactor KA5 normally closed contact is connected with a thermal relay FR normally closed contact in parallel, and the thermal relay FR normally closed contact is connected with a coil of a contactor KM in series;
the start/stop non-return circuit is also connected with a DCS stop circuit in parallel, and the DCS stop circuit is connected with a DCS control switch and a DCS stop contactor KA5 coil in series;
a normally open contact of a main motor contactor KA1 of the frequency converter, a coil of a ready contactor KA2 of the frequency converter, a coil of an operation contactor KA3 of the frequency converter and a coil of a fault contactor KA4 of the frequency converter are respectively connected to the control/input/output loop of the frequency converter through pins of a DCS controller;
the indicating loop comprises a frequency converter main motor operation loop, a frequency converter main motor stopping loop and a frequency converter fault loop which are connected in parallel;
the alarm signal loop comprises a normally open contact of a thermal relay FR and an indicator light DW which are connected in series;
the feedback signal loop comprises a frequency converter main motor ready feedback loop, a frequency converter main motor operation feedback loop, a frequency converter main motor fault feedback loop and an auxiliary fan motor fault feedback loop.
And a filter is connected in series in front of the main motor on the main loop of the main motor of the frequency converter.
The frequency converter main motor operation loop comprises a normally closed contact KA1 of a frequency converter main motor starting contactor and an indicator lamp HG which are connected in series;
the frequency converter main motor stop loop comprises a normally open contact of a frequency converter main motor starting contactor KA1 and an indicator lamp HR which are connected in series;
and the frequency converter fault loop comprises a normally open contact KA4 of the frequency converter fault contactor and an indicator lamp HY which are connected in series.
The frequency converter main motor readiness feedback loop comprises a normally open contact of a frequency converter readiness contactor KA2 connected to the DCS controller;
the frequency converter main motor operation feedback loop comprises a frequency converter operation contactor KA3 normally open contact connected to the DCS controller;
the frequency converter main motor fault feedback loop comprises a frequency converter fault contactor KA4 normally open contact connected to the DCS controller;
and the auxiliary fan motor fault feedback loop comprises a contactor KM normally open contact connected to the DCS controller.
And the master control loop is also connected with an instrument power supply loop of the DCS operation platform.
The utility model discloses beneficial effect for prior art possesses does: the utility model provides a fault alarm device of inverter motor auxiliary fan removes auxiliary fan contactor release and stops main motor interlocking, auxiliary fan adds the thermal relay protection, auxiliary fan contactor control circuit is inserted to the point of closing of thermal relay, thermal relay operation tripping contactor disconnection auxiliary fan contactor, the while thermal relay normally open point connects all the way acousto-optic alarm device, give technology DCS controller with auxiliary fan operation and main motor operation signal simultaneously, send alarm signal when main motor operation auxiliary fan does not operate, but uninterrupted inverter motor's operation, the transformation is with low costs, external connection is few, the use is simple and convenient, and the popularization nature is strong, it is good through test operation effect, can the supplementary fan trouble of very efficient discovery, guarantee the steady operation of main motor simultaneously, make equipment can steady operation in succession, and the production efficiency is improved.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, the utility model provides a fault alarm device of auxiliary fan of inverter motor, including main loop and control circuit, be provided with main switch QF on the main loop and connect the power, main switch QF's leading-out terminal has connect converter main motor and auxiliary fan motor in parallel, wherein has concatenated contactor KM and thermorelay FR on auxiliary fan motor's the main loop, the power inlet wire end of control circuit is connected with automatic switch ZK, and automatic switch ZK's leading-out terminal connects control circuit's start/stop circuit, converter control/input/output circuit, instruction circuit, alarm signal circuit and feedback signal circuit;
the alarm signal loop is formed by connecting a normally open contact of a thermal relay FR in series with an acousto-optic alarm device, the normally closed contact loop of the thermal relay FR is connected in series with a coil of a contactor KM, and the normally open contact of the contactor KM is connected to an IO pin of a DCS controller;
the starting/stopping loop is connected with a starting switch SB1, a stopping switch SB2, a DCS parking contactor KA5 normally closed contact and a coil of a frequency converter main motor starting contactor KA1 in series, the starting switch SB1 is connected with a normally open contact of the frequency converter main motor starting contactor KA1 in parallel, a leading-out end of the DCS parking contactor KA5 normally closed contact is connected with a thermal relay FR normally closed contact in parallel, and the thermal relay FR normally closed contact is connected with a coil of a contactor KM in series;
the start/stop non-return circuit is also connected with a DCS stop circuit in parallel, and the DCS stop circuit is connected with a DCS control switch and a DCS stop contactor KA5 coil in series;
the frequency converter control/input/output loop is respectively connected with a normally open contact of a main motor contactor KA1, a ready contactor KA2 coil of the frequency converter, an operation contactor KA3 coil of the frequency converter and a fault contactor KA4 coil of the frequency converter through pins of a DCS controller;
the indicating loop comprises a frequency converter main motor operation loop, a frequency converter main motor stopping loop and a frequency converter fault loop which are connected in parallel;
the alarm signal loop comprises a normally open contact of a thermal relay FR and an indicator light DW which are connected in series;
the feedback signal loop comprises a frequency converter main motor ready feedback loop, a frequency converter main motor operation feedback loop, a frequency converter main motor fault feedback loop and an auxiliary fan motor fault feedback loop.
And a filter is connected in series in front of the main motor on the main loop of the main motor of the frequency converter.
The frequency converter main motor operation loop comprises a normally closed contact of a frequency converter main motor starting contactor KA1 and an indicator lamp HG which are connected in series;
the frequency converter main motor stop loop comprises a normally open contact of a frequency converter main motor starting contactor KA1 and an indicator lamp HR which are connected in series;
and the frequency converter fault loop comprises a normally open contact KA4 of the frequency converter fault contactor and an indicator lamp HY which are connected in series.
The ready feedback loop of the main motor of the frequency converter comprises a normally open contact of a ready contactor KA2 of the frequency converter connected to the DCS;
the frequency converter main motor operation feedback loop comprises a frequency converter operation contactor KA3 normally open contact connected to the DCS controller;
the frequency converter main motor fault feedback loop comprises a frequency converter fault contactor KA4 normally open contact connected to the DCS controller;
and the auxiliary fan motor fault feedback loop comprises a contactor KM normally open contact connected to the DCS controller.
And the master control loop is also connected with an instrument power supply loop of the DCS operation platform.
The utility model discloses the theory of operation does: auxiliary fan is opened by contactor KM control and is stopped, and contactor KM's coil adds the heat and protects, and contactor KM coil will be broken off to the normally closed contact of thermorelay FR becomes normally open, and acousto-optic alarm device HW can be lighted to the normally open contact closure of thermorelay FR simultaneously, and the help personnel of patrolling and examining discover that auxiliary fan can not normal operating. And the maintenance operation can be carried out by disconnecting the auxiliary fan contactor KM. The DCS controller can receive the main motor operation signal KA2 and simultaneously receive an alarm signal triggered by the loss of the auxiliary fan KM operation signal, and field personnel are informed to patrol the operation condition of the cooling fan.
The utility model discloses a model of DCS controller be ABB DCS PM865, wherein converter CPU's model is ABB PLC AC800M controller, and audible-visual alarm adopts the audible-visual alarm that the model is YS-05A.
About the utility model discloses what the specific structure need explain, the utility model discloses a each part module connection relation each other is definite, realizable, except that the special explanation in the embodiment, its specific connection relation can bring corresponding technological effect to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model provides a model, the module of component, specific components and parts, mutual connected mode and, conventional use method, the predictable technological effect brought by above-mentioned technical characteristics all belong to the patent that technical staff can acquire before the application day, periodical papers, technical manual, technical dictionary, the repeated description in the textbook disclosed content, or belong to prior art such as the conventional technique in this field, common general knowledge, need not for the technical scheme that the present case provided is clear, complete, realizable, and can reproduce or obtain corresponding entity product according to this technical means.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a fault alarm device of inverter motor auxiliary fan, includes major loop and control circuit, its characterized in that: the main loop is provided with a main switch QF connected with a power supply, the wire outlet end of the main switch QF is connected with a main motor of a frequency converter and an auxiliary fan motor in parallel, the main loop of the auxiliary fan motor is connected with a contactor KM and a thermal relay FR in series, the wire inlet end of the power supply of the control loop is connected with an automatic switch ZK, and the wire outlet end of the automatic switch ZK is connected with a starting/stopping loop of the control loop, a frequency converter control/input/output loop, an indicating loop, an alarm signal loop and a feedback signal loop;
the alarm signal loop is characterized in that a normally open contact of a thermal relay FR is connected with an acousto-optic alarm device in series, a normally closed contact loop of the thermal relay FR is connected with a coil of a contactor KM in series, and a normally open contact of the contactor KM is connected to an IO pin of a DCS controller;
the starting/stopping loop is connected with a starting switch SB1, a stopping switch SB2, a DCS parking contactor KA5 normally closed contact and a coil of a frequency converter main motor starting contactor KA1 in series, the starting switch SB1 is connected with a normally open contact of the frequency converter main motor starting contactor KA1 in parallel, a leading-out end of the DCS parking contactor KA5 normally closed contact is connected with a thermal relay FR normally closed contact in parallel, and the thermal relay FR normally closed contact is connected with a coil of a contactor KM in series;
the start/stop non-return circuit is also connected with a DCS stop circuit in parallel, and the DCS stop circuit is connected with a DCS control switch and a DCS stop contactor KA5 coil in series;
the frequency converter control/input/output loop is respectively connected with a normally open contact of a main motor contactor KA1, a ready contactor KA2 coil of the frequency converter, an operation contactor KA3 coil of the frequency converter and a fault contactor KA4 coil of the frequency converter through pins of a DCS controller;
the indicating loop comprises a frequency converter main motor operation loop, a frequency converter main motor stopping loop and a frequency converter fault loop which are connected in parallel;
the alarm signal loop comprises a normally open contact of a thermal relay FR and an acousto-optic alarm indicator light HW which are connected in series;
the feedback signal loop comprises a frequency converter main motor ready feedback loop, a frequency converter main motor operation feedback loop, a frequency converter main motor fault feedback loop and an auxiliary fan motor fault feedback loop.
2. The fault alarm device of the auxiliary fan of the variable frequency motor according to claim 1, characterized in that: and a filter is connected in series in front of the main motor on the main loop of the main motor of the frequency converter.
3. The fault alarm device of the auxiliary fan of the variable frequency motor according to claim 1, characterized in that: the frequency converter main motor operation loop comprises a normally closed contact of a frequency converter main motor starting contactor KA1 and an indicator lamp HG which are connected in series;
the frequency converter main motor stop loop comprises a normally open contact of a frequency converter main motor starting contactor KA1 and an indicator lamp HR which are connected in series;
and the frequency converter fault loop comprises a normally open contact KA4 of the frequency converter fault contactor and an indicator lamp HY which are connected in series.
4. The fault alarm device of the auxiliary fan of the variable frequency motor according to claim 1, characterized in that: the ready feedback loop of the main motor of the frequency converter comprises a normally open contact of a ready contactor KA2 of the frequency converter connected to the DCS;
the frequency converter main motor operation feedback loop comprises a frequency converter operation contactor KA3 normally open contact connected to the DCS controller;
the frequency converter main motor fault feedback loop comprises a frequency converter fault contactor KA4 normally open contact connected to the DCS controller;
and the auxiliary fan motor fault feedback loop comprises a contactor KM normally open contact connected to the DCS controller.
5. The fault alarm device of the auxiliary fan of the variable frequency motor according to claim 1, characterized in that: and the main loop is also connected with an instrument power supply loop of the DCS operation platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222631634.XU CN218183267U (en) | 2022-10-08 | 2022-10-08 | Fault alarm device of variable frequency motor auxiliary fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222631634.XU CN218183267U (en) | 2022-10-08 | 2022-10-08 | Fault alarm device of variable frequency motor auxiliary fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218183267U true CN218183267U (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222631634.XU Active CN218183267U (en) | 2022-10-08 | 2022-10-08 | Fault alarm device of variable frequency motor auxiliary fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218183267U (en) |
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2022
- 2022-10-08 CN CN202222631634.XU patent/CN218183267U/en active Active
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