CN211144762U

CN211144762U - Power supply alternate control circuit for motor of double submersible sewage pumps

Info

Publication number: CN211144762U
Application number: CN201921054200.XU
Authority: CN
Inventors: 冯中伟; 胡世海
Original assignee: Nh Electric Group Co ltd
Current assignee: Nh Electric Group Co ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-07-31
Anticipated expiration: 2029-07-08

Abstract

The utility model provides a two stealthily dirty pump motor power alternate control circuit, including main control circuit, alternate function circuit and floater control circuit, main control circuit includes three-phase alternating current power supply, circuit breaker QF, 1# ac contactor, 2# ac contactor, 1# thermorelay, 2# thermorelay, motor M1 and motor M2, floater control circuit is used for detecting water level signal and transmits for with the drive behind the function circuit of rotating motor M1 with motor M2 work or simultaneous working of rotating. Through the control of taking turns, make the main pump can not continuous load work, reduce the fault probability, make the reserve pump participate in the working cycle together, make full use of resources, realize "two main each other are reserve". The rotation control circuit is not provided with a programmable controller, has low price, strong practicability and high operability, and provides wide prospect for the automatic rotation control system of the submersible sewage pump.

Description

Power supply alternate control circuit for motor of double submersible sewage pumps

Technical Field

The utility model relates to a two sump pump motor power alternate control circuit.

Background

At present, due to the difference of design concepts of conditions and cost reasons in many occasions, most submersible sewage pump control systems do not have an automatic rotation function, and a programmable controller (P L C for short) is added in a few submersible sewage pump control systems, so that the cost of the control systems is greatly increased, and most occasions cannot be controlled by using the P L C due to the cost saving consideration.

Therefore, a new technical solution is provided to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two stealthily dirty pump motor power alternate control circuit.

The utility model discloses a technical scheme as follows:

a power supply alternate control circuit for a motor of a double submersible sewage pump comprises a main control loop, an alternate function loop and a floating ball control loop, the main control loop comprises a three-phase alternating current power supply, a breaker QF, a 1# alternating current contactor, a 2# alternating current contactor, a 1# thermal relay, a 2# thermal relay, a motor M1 and a motor M2, the three-phase alternating current power supply, the normally open contact of the breaker QF, the normally open contact KM1-1 of the 1# alternating current contactor, the 1# thermal relay and the motor M1 are sequentially connected, the three-phase alternating current power supply, the normally open contact of the breaker QF, the normally open contact KM2-1 of the 2# alternating current contactor, the 2# thermal relay and the motor M2 are sequentially connected, one ends of the motor M2, the motor M1 and the grounding protector XB are sequentially connected, and the other end of the grounding protector XB is connected with the PE wire;

the alternating function circuit comprises a 1# pump control circuit and a 2# pump control circuit, two ends of the 1# pump control circuit and the two ends of the 2# pump control circuit are respectively connected to a live wire L and a neutral N of the three-phase alternating current power supply, the 1# pump control circuit comprises a 1# change-over switch, a normally open contact KA2-1 of a relay KA2, a power coil Q1 of the 1# alternating current contactor and a normally closed contact KH1-2 of the 1# thermal relay, the normally open contact KA2-1, the power coil Q1 and the normally closed contact KH1-2 are connected, the 1# change-over switch comprises a 1# manual contact, a 1# automatic contact and a 1# alternating contact, one end of the 1# manual contact is connected with the live wire L-1, the other end of the 1# manual contact is connected with the Q3642, one end of the 1# automatic contact is connected with the live wire L-1, the other end of the 1# automatic contact is connected with a normally open contact 1-1 of the live wire 1, the other end of the 1# manual contact is connected with the normally open contact KA 5-KA 2, the normally closed contact KA2 is connected with a normally open contact KM # manual contact, and the normally closed contact KM # contact is connected with the normally open contact 1-593, the normally closed contact of the normally open contact KM # alternating current relay KM # contact 843, the normally open contact is connected with the normally closed contact 48-24-593, and the normally closed contact of the normally;

the control loop of the 2# pump comprises a 2# change-over switch, a normally open contact KA-2 of a relay KA, an energizing coil Q of the 2# alternating current contactor and a normally closed contact KH-2 of the 2# thermal relay, wherein the normally open contact KA-2, the energizing coil Q and the normally closed contact KH-2 are connected, the 2# change-over switch comprises a 2# manual contact, a 2# automatic contact and a 2# alternate contact, one end of the 2# manual contact is connected with the live wire 1, the other end of the 2# manual contact is connected with the energizing coil Q, one end of the 2# automatic contact is connected with the live wire 1, the other end of the 2# automatic contact is connected with the normally open contact KA-2 of the relay KA, the normally open contact KA-2 is connected with one end of a normally closed contact KM-4 of the 1# alternating current contactor, the other end of the normally closed contact KM-4 is connected with the energizing coil Q, one end of the 2# automatic contact is connected with the live wire 1, the other end of the normally open contact KA-2 # manual contact is connected with the normally open contact KM-4 of the normally open contact, the normally open contact KM-2-4 of the relay KA, the normally open contact is connected with a normally open contact of the normally open contact, and a normally open contact of the relay KM-2-4, and a normally open contact is connected with a lead wire, one end of the normally open contact, and a lead wire of the normally open contact of the relay KM-2 # alternating relay, one end of the normally open contact is connected with a normally open contact, and a;

two ends of the floating ball control loop are respectively connected with the live wire L1 and the central line N, and the floating ball control loop is used for detecting a water level signal and transmitting the water level signal to the alternate function loop so as to drive the motor M1 and the motor M2 to alternately work or simultaneously work.

The double submersible sewage pump motor power supply alternation control circuit comprises a floating ball control loop, a fuse FU, a transformer TC, a first floating ball contact loop and a second floating ball contact loop, wherein the fuse FU is connected with the transformer TC in series, the first floating ball contact loop is connected with the transformer TC after being connected with the second floating ball contact loop in parallel, the first floating ball contact loop comprises a first floating ball, a first floating ball normally-open contact 1FQ and an energizing coil Q4 of a relay KA1, the second floating ball contact loop comprises a second floating ball, a second floating ball normally-open contact 2FQ and an energizing coil Q5 of the relay KA2, the first floating ball is electrically connected with two ends of the first floating ball normally-open contact 1FQ, the energizing coil Q4 is connected with the first floating ball normally-open contact 1FQ, and the energizing coil Q5 is connected with the second floating ball normally-open contact 2FQ, the second floating ball is electrically connected with two ends of the normally open contact 2FQ of the second floating ball.

Two stealthy dirty pump motor power alternate control circuit, wherein, alternate the function return circuit and still include 1# pump trouble return circuit and 2# pump trouble return circuit, 1# pump trouble return circuit includes 1# thermal relay's normally open contact KH1-1, 2# pump trouble return circuit includes 2# thermal relay's normally open contact KH 2-1.

The utility model discloses beneficial effect: the utility model discloses an automatic do not have programmable controller in the control circuit by turns, the price is very low, and the practicality is strong, maneuverability is high, and this provides extensive prospect for stealthily dirty pump automatic control system by turns.

Drawings

Fig. 1 is a circuit diagram of the present invention.

Fig. 2 is a circuit diagram of a float control circuit according to an embodiment of the present invention.

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 with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different systems of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Please refer to fig. 1 and 2, the present invention provides a dual submersible sewage pump motor power source alternation control circuit, including a main control circuit, an alternation function circuit and a floating ball control circuit, wherein the main control circuit includes a three-phase ac power source, a breaker QF, a 1# ac contactor KM1, a 2# ac contactor KM2, a 1# thermal relay KH1, a 2# thermal relay KH2, a motor M1 and a motor M2, the three-phase ac power source, a normally open contact of the breaker QF, a normally open contact of the 1# ac contactor KM1, a normally open contact of the 1# thermal relay KH1-1, a normally open contact of the 1# thermal relay KH1 and a motor M1 are sequentially connected, the three-phase ac power source, a normally open contact of the breaker QF, a normally open contact of the 2# ac contactor KM2-1, a 2# thermal relay KH2 and a motor M2 are sequentially connected, the motor M2, the motor M1 and a ground protector, one end of the ground protector is sequentially connected with a three-phase ac line grounding protector XB L, the grounding protector XB 6 is a high cost low-phase grounding material.

The alternating function circuit comprises a 1# pump control circuit and a 2# pump control circuit, two ends of the 1# pump control circuit and the two ends of the 2# pump control circuit are respectively connected with a live wire L1 and a central N of the three-phase alternating current power supply, the 1# pump control circuit comprises a 1# transfer switch 10, a normally open contact KA2-1 of a relay KA2, a power coil Q1 of the 1# alternating current contactor KM1, a normally closed contact KH1-2 of the 1# thermal relay KH1, the normally open contact KA2-1, the power coil Q1 and the normally closed contact KH1-2 are connected, the 1# transfer switch 10 comprises a 1# manual contact, a 1# automatic contact and a 1# alternating contact, one end of the 1# manual contact is connected with the live wire L, the other end of the 1# manual contact is connected with the power coil Q1, one end of the 1# automatic contact is connected with the live wire L, the other end of the 1# automatic contact is connected with a normally open contact 36 1, the other end of the KA 1# manual contact is connected with a normally open contact KA1-1 of the normally closed contact KM # 3, one end of the normally open contact 1-1 is connected with a normally closed contact KM # contact 1 of the normally open contact 1-1, and one end of the normally closed contact 1-1 is connected with a normally closed contact 1 of the normally closed contact 1-1, and one end of the normally closed contact 1-1, and.

The 2# pump control loop comprises a 2# transfer switch 20, a normally open contact KA-2 of a relay KA, an energizing coil Q of a 2# alternating current contactor KM, a normally closed contact KH-2 of a 2# thermal relay KH, the normally open contact KA-2, the energizing coil Q and the normally closed contact KH-2 are connected, the 2# transfer switch 20 comprises a 2# manual contact, a 2# automatic contact and a 2# alternate contact, one end of the 2# manual contact is connected with the live wire 1, the other end of the 2# manual contact is connected with the energizing coil Q, one end of the 2# automatic contact is connected with the live wire 1, the other end of the 2# automatic contact is connected with the normally open contact KA-2 of the relay KA, the normally open contact KA-2 is connected with one end of a normally closed contact KM-4 of the 1# alternating current contactor KM, the other end of the normally closed contact KM-4 is connected with the energizing coil Q, one end of the 2# automatic contact is connected with the live wire 1, the other end of the normally open contact KA-1 # alternate with the normally open contact KM-4 of the normally open contact, the normally open contact KM-2-4 of the relay KM, the normally open contact is connected with the normally open contact of the normally open contact, and the normally open contact of the normally open contact KM-2-4, the normally open contact of the relay KM-2-3, the normally open contact is connected with the normally open contact of the normally open contact, and the normally open contact of the relay KM-2-4, the normally open contact, and the normally open contact of the relay.

The two ends of the floating ball control loop are respectively connected with the live wire L1 and the central line N, and the floating ball control loop is used for detecting a water level signal and transmitting the water level signal to the alternating function loop so as to drive the motor M1 and the motor M2 to work alternately or simultaneously.

In this embodiment, as shown in fig. 2, the float control circuit includes a fuse FU, a transformer TC, a first float contact circuit and a second float contact circuit, the fuse FU is connected in series with the transformer TC, the first floating ball contact circuit and the second floating ball contact circuit are connected in parallel and then connected with the transformer TC, the first floating ball contact loop comprises a first floating ball (not shown in the figure), a first floating ball normally open contact 1FQ and an electrified coil Q4 of the relay KA1, the second floating ball contact loop comprises a second floating ball (not shown in the figure), a second floating ball normally open contact 2FQ and an electrified coil Q5 of the relay KA2, the first floating ball is electrically connected with two ends of the normally open contact 1FQ of the first floating ball, the energizing coil Q4 is connected with the normally open contact 1FQ of the first floating ball, the energizing coil Q5 is connected with the second floating ball normally open contact 2FQ, and the second floating ball is electrically connected with two ends of the second floating ball normally open contact 2 FQ.

In this embodiment, the alternate function circuit further includes a 1# pump fault circuit and a 2# pump fault circuit, the 1# pump fault circuit includes the normally open contact KH1-1 of the 1# thermal relay KH1, and the 2# pump fault circuit includes the normally open contact KH2-1 of the 2# thermal relay KH 2.

The utility model discloses a control circuit working method is in the practical application, the main control circuit in this application is mainly used for realizing driving two submersible sewage pumps and motor and carry out normal work, this part circuit is prior art, no longer repeated herein, in 1# pump control circuit, when 1# manual contact circular telegram, make electrified coil Q1 and normally closed contact KH1-2 get electric, simultaneously, normally open contact KM1-2 becomes normally closed, because 1# rotation contact is not put through, normally open contact KM1-2 becomes normally closed state, this circuit also does not be circular telegram, and 1# automatic contact and its circuit also do not go through circular telegram, through controlling 1# manual contact circular telegram, control motor M1 start and stop, similarly, when 2# manual contact of 2# change over switch in 2# pump control circuit is put through, make electrified coil Q2 and normally closed contact KH2-2 of normally closed contact, normally open contact KM2-2 becomes normally closed contact KM, but both 1# rotation contact and 1# automatic contact and its normal open contact KH switch-2 switch, make normally closed contact KH 358-2 switch through normal open contact KH, normal open contact KH-2 normal open contact KH-9-2 normal open contact KM, normal open circuit is normal open contact, normal open contact KM, normal open circuit is opened and normal open contact KM, normal open circuit is used for the normal open circuit, normal open circuit for the normal open circuit, normal open circuit is used for the normal open circuit, normal open circuit for the normal open circuit.

When the gear of the 1# automatic contact is switched on, the normally open contact KA1-1 at the positions of the signal 14 and the signal 16 in the figure 1 is still kept normally open, in order to enable the normally open contact KA1-1 to be normally closed, in practical application, sewage in a sewage pool continuously rises, so that when a first floating ball reaches a preset first water level, the normally open contact 1FQ of the first floating ball is closed, the energizing coil Q4 is energized, at the moment, the normally open contact KA1-1 is changed into a normally closed state, the energizing coil Q1 is energized, and a submersible sewage pump and a motor M1 thereof work; when sewage in the sewage tank continues to rise, and the second floating ball reaches a preset second water level, the second water level is higher than the first water level, the normally-open contact 2FQ of the second floating ball is closed, the energizing coil Q5 is electrified, at the moment, the normally-open contact KA2-1 and the normally-open contact KA2-2 are both in a normally-closed state, the energizing coils Q1 and Q2 are electrified, and the two submersible sewage pumps and the motors M1 and M2 of the two submersible sewage pumps work simultaneously.

The normally closed contact KM2-3 and the normally closed contact KM1-4 are used for interlocking, namely, only one pump is kept between the two pumps to work.

When the 1# alternate contact and the 2# alternate contact are both connected and the energizing coil Q4 is energized, the normally closed contact KA4-3 is kept normally closed and energized, the circuit is connected to the circuit on the 1# automatic contact, so that the motor M1 works (the circuit defaults that one submersible sewage pump and the motor M1 thereof are started, and the other submersible sewage pump and the motor M2 thereof are not started), the normally open contact KM1-3 of the 1# alternating current contactor KM1 is normally closed and closed, so that the energizing coil Q3 is energized, and meanwhile, the normally closed contact KA4-3 is opened. The normally closed contact KA4-3 under the 1# alternate contact gear of the 1# pump control circuit is opened, which means that a submersible sewage pump and a motor M1 thereof cannot be started any more when the 1# alternate contact and the 2# alternate contact are both switched on next time.

When the 2# alternate contact is switched on, when the first energizing coil Q3 is energized, the normally closed contact KA4-3 is changed from normally closed to normally open, the normally open contact KA4-1, the normally open contact KM2-2 and the normally open contact KA4-2 are all changed from normally open to normally closed, the energizing coil Q2 is energized, and the motor M2 is started. When the normally open contact KA4-2 becomes normally closed, the normally closed contact KM2-4 becomes normally open, the energizing coil Q3 loses electricity, and the normally closed contact KA4-3 which is already in the open state under the 1# alternate contact gear of the 1# pump control loop is restored to the original state, namely, the normally closed contact KA4-3 is changed from the open state to the closed state. Through the control of the switching circuit, when M1 stops working for the first time, motor M2 replaces M1 to continue working and stop, motor M1 can start working for the second time, and the rotation is performed, so that motor M2 and motor M1 are in a standby state.

In the description of the present specification, reference to the description of the terms "in this embodiment," "in further embodiments," "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," or the like, means that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims

1. A motor power supply alternate control circuit of a double submersible sewage pump is characterized by comprising a main control loop, an alternate function loop and a floating ball control loop, the main control loop comprises a three-phase alternating current power supply, a breaker QF, a 1# alternating current contactor, a 2# alternating current contactor, a 1# thermal relay, a 2# thermal relay, a motor M1 and a motor M2, the three-phase alternating current power supply, the normally open contact of the breaker QF, the normally open contact KM1-1 of the 1# alternating current contactor, the 1# thermal relay and the motor M1 are sequentially connected, the three-phase alternating current power supply, the normally open contact of the breaker QF, the normally open contact KM2-1 of the 2# alternating current contactor, the 2# thermal relay and the motor M2 are sequentially connected, one ends of the motor M2, the motor M1 and the grounding protector XB are sequentially connected, and the other end of the grounding protector XB is connected with the PE wire;

the alternating function circuit comprises a 1# pump control circuit and a 2# pump control circuit, two ends of the 1# pump control circuit and the two ends of the 2# pump control circuit are respectively connected to a live wire L and a neutral wire N of the three-phase alternating current power supply, the 1# pump control circuit comprises a 1# change-over switch, a normally-open contact KA2-1 of a relay KA2, a power coil Q1 of the 1# alternating current contactor and a normally-closed contact KH1-2 of the 1# thermal relay, the normally-open contact KA2-1, the power coil Q1 and the normally-closed contact KH1-2 are connected, the 1# change-over switch comprises a 1# manual contact, a 1# automatic contact and a 1# alternating contact, one end of the 1# manual contact is connected with the live wire L-1, the other end of the 1# manual contact is connected with the coil Q3642, one end of the 1# automatic contact is connected with the live wire L-live wire, the other end of the 1# automatic contact is connected with a normally-open contact 1-1 of the live wire 1, the other end of the normally-open contact KA 5-KA 2 is connected with a normally-open contact KM of the normally-open contact KM contactor, and the normally-closed contact KM contact is connected with a normally-24-1-24-80, and a normally-35-contact of the normally-35-80-contact;

two ends of the floating ball control loop are respectively connected with the live wire L1 and the neutral wire N, and the floating ball control loop is used for detecting a water level signal and transmitting the water level signal to the alternate function loop so as to drive the motor M1 and the motor M2 to alternately work or simultaneously work.

2. The dual submersible sewage pump motor power alternation control circuit of claim 1, wherein the float ball control circuit comprises a fuse FU, a transformer TC, a first float ball contact circuit and a second float ball contact circuit, the fuse FU is connected in series with the transformer TC, the first float ball contact circuit and the second float ball contact circuit are connected in parallel and then connected with the transformer TC, the first float ball contact circuit comprises a first float ball, a first float ball normally open contact 1FQ and a power coil Q4 of the relay KA1, the second float ball contact circuit comprises a second float ball, a second float ball normally open contact 2FQ and a power coil Q5 of the relay KA2, the first float ball is electrically connected with two ends of the first float ball normally open contact 1FQ, the power coil Q4 is connected with the first float ball normally open contact 1FQ, the float ball coil Q5 is connected with the second float ball normally open contact 2FQ, the second floating ball is electrically connected with two ends of the normally open contact 2FQ of the second floating ball.

3. The dual submersible pump motor power reversal control circuit of claim 2, wherein the reversal function circuit further comprises a # 1 pump fault circuit and a # 2 pump fault circuit, the # 1 pump fault circuit including the normally open contact KH1-1 of the # 1 thermal relay, the # 2 pump fault circuit including the normally open contact KH2-1 of the # 2 thermal relay.