CN213399300U - Follow-up type capping control system for sewage treatment tank - Google Patents
Follow-up type capping control system for sewage treatment tank Download PDFInfo
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- CN213399300U CN213399300U CN202023112656.2U CN202023112656U CN213399300U CN 213399300 U CN213399300 U CN 213399300U CN 202023112656 U CN202023112656 U CN 202023112656U CN 213399300 U CN213399300 U CN 213399300U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a follow-up capping control system for a sewage treatment tank, which comprises a three-phase four-wire power supply, a variable frequency motor circuit, a cooling fan circuit, an upper electric control circuit and a frequency converter fault and indication circuit, wherein the variable frequency motor circuit, the cooling fan circuit, the upper electric control circuit and the frequency converter fault and indication circuit are connected with the three-phase four-wire power supply; the variable frequency motor circuit and the cooling fan circuit are arranged in parallel and are positioned at the downstream of the three-phase four-wire power supply; the utility model has the advantages that: 1. the service life of the motor is prolonged; 2. the quality is reliable, and the operation is stable; 3. the rotating speed is controllable, and various process requirements are met; 4. the standardization of products is realized; 5. the control mode is diversified, and the universality of the system is improved.
Description
Technical Field
The utility model relates to a follow-up type capping control system for a sewage treatment tank, which relates to the environmental protection fields of sewage treatment, waste gas treatment and the like.
Background
The existing follow-up control system in the industry is divided into a driving wheel and driven wheels, wherein 1 driven wheel is generally arranged with small span, and 2-4 driven wheels are respectively arranged along with the increase of the span. The driving wheels are driven by a motor, and the driven wheels are driven by the driving wheels to rotate together. It is common practice in the industry to start the motor directly. So doing has the following disadvantages: 1. the motor is easy to burn out due to overlarge torque; 2. if the rotating speeds of the motors are not consistent, the wheels are easily damaged; 3. the direct start sometimes has too fast a rotation speed to meet the sewage requirement of the process. 4. The versatility is not strong and no standardized product is formed.
Disclosure of Invention
For overcoming the defects of the prior art, the utility model provides a follow-up type capping control system for a sewage treatment pool, the technical scheme of the utility model is that:
a follow-up capping control system for a sewage treatment pool comprises a three-phase four-wire power supply, a variable frequency motor circuit, a cooling fan circuit, an electrifying control circuit and a frequency converter fault and indication circuit, wherein the variable frequency motor circuit, the cooling fan circuit, the electrifying control circuit and the frequency converter fault and indication circuit are connected with the three-phase four-wire power supply; the variable frequency motor circuit and the cooling fan circuit are arranged in parallel and are positioned at the downstream of the three-phase four-wire power supply; the variable-frequency motor circuit comprises a frequency converter, a motor M1 and a circuit breaker QF2, wherein the circuit breaker QF2 is connected in series between the input end of the frequency converter and a three-phase four-wire power supply, and the output end of the frequency converter is connected with at least one group of motors M1; the cooling fan circuit comprises an alternating current contactor KM1 and a fan M2, wherein one end of an auxiliary normally open switch of the alternating current contactor KM1 is connected to a line between a breaker QF2 and a frequency converter, and the other end of the auxiliary normally open switch is connected to at least one group of fans M2.
The power-on control circuit comprises a combination switch SA, a starting button SB1, a starting button SB2, a DCS control system and an alternating current contactor KM2, wherein one end of the combination switch SA is connected with a T wire of a three-phase four-wire power supply, the other end of the combination switch SA is sequentially connected with one end of a starting button SB1, a disconnecting button SB2 and one end of a coil of an alternating current contactor KM2, the other end of the coil of the alternating current contactor KM2 is connected with an N wire, and a normally-open switch of the alternating current contactor KM2 and the disconnecting button SB 2; one end of the DCS control system is connected with the combination switch SA, and the other end of the DCS control system is connected to a normally open switch and a disconnection button SB2 of the alternating current contactor KM2 and is connected with a normally open switch and a disconnection button SB2 of the alternating current contactor KM2 in parallel; one end of the intermediate relay KA1 is connected to a line between the DCS control system and the combination switch SA, and the other end of the intermediate relay KA1 is connected to an N line.
The frequency converter fault and indication circuit comprises a fault relay KA2, an operation relay KA3, a stop indicator light HR, a fault indicator light HY and an operation indicator light HG, a fault contact of the frequency converter and the fault indicator light HY are connected in series on a fault indication circuit, a coil of the fault relay KA2 is arranged in parallel with the fault indicator light HY, one end of the fault indication circuit is connected with a T line, and the other end of the fault indication circuit is connected with an N line; an operation contact of a frequency converter and an operation indicator lamp HG are connected in series on an operation indicator line, a coil of an operation relay KA2 is arranged in parallel with the operation indicator lamp HG, one end of the operation indicator line is connected with a T line, and the other end of the operation indicator line is connected with an N line; a normally closed switch and a stop indicator lamp of the operation relay KA3 are connected in series on the stop indicator line, one end of the stop indicator line is connected with the T line, and the other end of the stop indicator line is connected with the N line; a temperature control switch and a control cabinet cooling fan FJ are sequentially connected in series on the fan indicating line, one end of the fan indicating line is connected with a T line, and the other end of the fan indicating line is connected with an N line.
The utility model has the advantages that: 1. the service life of the motor is prolonged; 2. the quality is reliable, and the operation is stable; 3. the rotating speed is controllable, and various process requirements are met; 4. the standardization of products is realized; 5. the control mode is diversified, and the universality of the system is improved.
The defect of follow-up capping in the control process is overcome, and the service life of the motor is prolonged by controlling the variable frequency motor through the frequency converter. The same circuit respectively controls all the driving wheels, and the speed of all the driving wheels is unified. The frequency converter is added to meet the requirements of various rotating speeds through speed regulation, the most key product has strong universality, and a standard control system with one driving wheel, two driving wheels, three driving wheels, four driving wheels and four driving wheels is provided.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention.
Detailed Description
The invention will be further described with reference to specific embodiments, the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Referring to fig. 1 to 4, the utility model relates to a follow-up capping control system for a sewage treatment tank, which comprises a three-phase four-wire power supply (T wire, S wire, R wire and N wire) and a variable frequency motor circuit, a cooling fan circuit, an upper electric control circuit and a frequency converter fault and indication circuit which are connected with the three-phase four-wire power supply; the variable frequency motor circuit and the cooling fan circuit are arranged in parallel and are positioned at the downstream of the three-phase four-wire power supply; the variable-frequency motor circuit comprises a frequency converter, a motor M1 and a circuit breaker QF2, wherein the circuit breaker QF2 is connected in series between the input end of the frequency converter and a three-phase four-wire power supply, and the output end of the frequency converter is connected with at least one group of motors M1; the cooling fan circuit comprises an alternating current contactor KM1 and a fan M2, wherein one end of an auxiliary normally open switch of the alternating current contactor KM1 is connected to a line between a breaker QF2 and a frequency converter, and the other end of the auxiliary normally open switch is connected to at least one group of fans M2.
The power-on control circuit comprises a combination switch SA, a starting button SB1, a starting button SB2, a DCS control system and an alternating current contactor KM2, wherein one end of the combination switch SA is connected with a T wire of a three-phase four-wire power supply, the other end of the combination switch SA is sequentially connected with one end of a starting button SB1, a disconnecting button SB2 and one end of a coil of an alternating current contactor KM2, the other end of the coil of the alternating current contactor KM2 is connected with an N wire, and a normally-open switch of the alternating current contactor KM2 and the disconnecting button SB 2; one end of the DCS control system is connected with the combination switch SA, and the other end of the DCS control system is connected to a normally open switch and a disconnection button SB2 of the alternating current contactor KM2 and is connected with a normally open switch and a disconnection button SB2 of the alternating current contactor KM2 in parallel; one end of the intermediate relay KA1 is connected to a line between the DCS control system and the combination switch SA, and the other end of the intermediate relay KA1 is connected to an N line.
The frequency converter fault and indication circuit comprises a fault relay KA2, an operation relay KA3, a stop indicator lamp HR, a fault indicator lamp HY and an operation indicator lamp HG, a fault contact of the frequency converter is connected with the fault indicator lamp HY in series, a coil of the fault relay KA2 is arranged with the fault indicator lamp HY in parallel, one end of the fault indication circuit is connected with a T line, and the other end of the fault indication circuit is connected with an N line; an operation contact of a frequency converter and an operation indicator lamp HG are connected in series on an operation indicator line, a coil of an operation relay KA2 is arranged in parallel with the operation indicator lamp HG, one end of the operation indicator line is connected with a T line, and the other end of the operation indicator line is connected with an N line; a normally closed switch and a stop indicator lamp of the operation relay KA3 are connected in series on the stop indicator line, one end of the stop indicator line is connected with the T line, and the other end of the stop indicator line is connected with the N line; a temperature control switch and a control cabinet cooling fan FJ are sequentially connected in series on the fan indicating line, one end of the fan indicating line is connected with a T line, and the other end of the fan indicating line is connected with an N line.
The utility model discloses a theory of operation is:
taking three driving wheels as an example, the working principle is briefly introduced, the three driving wheels are driven by a follow-up type cover, the power of driving motors of the three driving wheels is a three-phase 380V 1.1KW variable frequency motor, the motor is provided with a strong cooling fan, and the strong cooling fan is a three-phase 380V 45W small motor. Three 1.1KW motors, one ABB ACS510 series 4KW frequency converter is selected. When the variable-frequency motor runs, the main power circuit breaker QF1 is switched on firstly, then the switch breaker QF2 is switched on, the three-position two-gear combination switch SA is arranged on the door panel of the control cabinet, when the variable-frequency motor rotates to be manual, the circuit 103 and the circuit 105 are connected, and the variable-frequency motor is controlled to be started and stopped by the combination switch SA on the door panel. When the rotating shaft rotates to be automatic, the line 103 and the line 111 are connected, and the variable frequency motor is started and stopped under the control of electric shock of a remote DCS control system.
After a starting button SB2 on the door panel of the control cabinet is pressed manually or the contacts of the DCS control system are closed automatically, the contactor KM1 is attracted, and at the moment, the fan is electrified and rotated. Meanwhile, a normally open contact of the contactor KM1 is connected with a port B0 and a port B1 of the frequency converter, a starting signal is given to the frequency converter, the frequency converter is started, the driving wheel drives the motor to be electrified to start rotating, and the rotation directions of the three motors are required to be confirmed to be consistent under the condition of the three motors. The rotating speed of the motor can be controlled by a potentiometer R1 on the door panel manually, and the speed of the motor can be controlled by remotely giving a 4-20ma current signal to an AI2 and GND of the frequency converter automatically. When the frequency converter operates, the R02C is communicated with the R02B, the operation indicator lamp HG on the door panel is lightened at the moment, and the operation relay KA3 is attracted. If the frequency converter has a fault, the R03C is communicated with the R03B, the fault indicating lamp HY on the door panel is lightened at the moment, and the fault relay KA2 is attracted. After a stop button SB1 on a door panel of the control cabinet is pressed manually or a contact of a DCS control system is disconnected automatically, the contactor KM1 is disconnected for attracting, and when the frequency converter stops working, a normally closed contact of the operation relay KA3 is connected to light the stop indicator lamp HR.
When the remote monitoring device is in operation and has faults, three signals of automatic positions can be sent to a remote control system or a PLC through normally open contacts of a fault relay KA2, an operation relay KA3 and an intermediate relay KA1, and the operation state of the remote monitoring device can be realized.
The frequency converter in the control cabinet can lead to the temperature rise in the cabinet, high temperature damages the service life of electrical components, and a cooling fan FJ and a temperature controller capable of adjusting temperature are arranged in the control cabinet, for example, when the temperature is set to 40 ℃, the temperature controller is switched on after reaching 40 ℃, the cooling fan is started, and the heat in the control cabinet is discharged.
When the motor is overheated or a mechanical part is stuck, the frequency converter can stop the motor through alarming, so that the motor is protected from being burnt out. The control system has the advantages that the sizes of the box bodies are consistent, and only the power of the frequency converter is different, so that the control system can be produced in batches and is standardized in the true sense.
Claims (3)
1. A follow-up capping control system for a sewage treatment pool is characterized by comprising a three-phase four-wire power supply, a variable frequency motor circuit, a cooling fan circuit, an electrifying control circuit and a frequency converter fault and indication circuit, wherein the variable frequency motor circuit, the cooling fan circuit, the electrifying control circuit and the frequency converter fault and indication circuit are connected with the three-phase four-wire power supply; the variable frequency motor circuit and the cooling fan circuit are arranged in parallel and are positioned at the downstream of the three-phase four-wire power supply; the variable-frequency motor circuit comprises a frequency converter, a motor M1 and a circuit breaker QF2, wherein the circuit breaker QF2 is connected in series between the input end of the frequency converter and a three-phase four-wire power supply, and the output end of the frequency converter is connected with at least one group of motors M1; the cooling fan circuit comprises an alternating current contactor KM1 and a fan M2, wherein one end of an auxiliary normally open switch of the alternating current contactor KM1 is connected to a line between a breaker QF2 and a frequency converter, and the other end of the auxiliary normally open switch is connected to at least one group of fans M2.
2. A servo-actuated capping control system for a sewage treatment pool according to claim 1, wherein the power-on control circuit comprises a combination switch SA, a start button SB1, a start button SB2, a DCS control system and an ac contactor KM2, one end of the combination switch SA is connected to a T-line of a three-phase four-wire power supply, the other end of the combination switch SA is connected with one end of a start button SB1, a break button SB2 and a coil of an ac contactor KM2 in sequence, the other end of the coil of the ac contactor KM2 is connected to an N-line, and a normally open switch of the ac contactor KM2 is connected in parallel with the break button SB 2; one end of the DCS control system is connected with the combination switch SA, and the other end of the DCS control system is connected to a normally open switch and a disconnection button SB2 of the alternating current contactor KM2 and is connected with a normally open switch and a disconnection button SB2 of the alternating current contactor KM2 in parallel; one end of the intermediate relay KA1 is connected to a line between the DCS control system and the combination switch SA, and the other end of the intermediate relay KA1 is connected to an N line.
3. The follow-up capping control system for the sewage treatment pool according to claim 1 or 2, wherein the frequency converter fault and indication circuit comprises a fault relay KA2, an operation relay KA3, a stop indicator light HR, a fault indicator light HY and an operation indicator light HG, a fault contact of the frequency converter and the fault indicator light HY are connected in series on the fault indication circuit, a coil of the fault relay KA2 is arranged in parallel with the fault indicator light HY, one end of the fault indication circuit is connected with a T line, and the other end of the fault indication circuit is connected with an N line; an operation contact of a frequency converter and an operation indicator lamp HG are connected in series on an operation indicator line, a coil of an operation relay KA2 is arranged in parallel with the operation indicator lamp HG, one end of the operation indicator line is connected with a T line, and the other end of the operation indicator line is connected with an N line; a normally closed switch and a stop indicator lamp of the operation relay KA3 are connected in series on the stop indicator line, one end of the stop indicator line is connected with the T line, and the other end of the stop indicator line is connected with the N line; a temperature control switch and a control cabinet cooling fan FJ are sequentially connected in series on the fan indicating line, one end of the fan indicating line is connected with a T line, and the other end of the fan indicating line is connected with an N line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023112656.2U CN213399300U (en) | 2020-12-22 | 2020-12-22 | Follow-up type capping control system for sewage treatment tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023112656.2U CN213399300U (en) | 2020-12-22 | 2020-12-22 | Follow-up type capping control system for sewage treatment tank |
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| Publication Number | Publication Date |
|---|---|
| CN213399300U true CN213399300U (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023112656.2U Active CN213399300U (en) | 2020-12-22 | 2020-12-22 | Follow-up type capping control system for sewage treatment tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213399300U (en) |
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2020
- 2020-12-22 CN CN202023112656.2U patent/CN213399300U/en active Active
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