CN216275957U

CN216275957U - One-pump one-frequency conversion water supply equipment

Info

Publication number: CN216275957U
Application number: CN202122632725.0U
Authority: CN
Inventors: 马桂兵; 张涛
Original assignee: Huarui Tianjin Technology Development Co ltd
Current assignee: Huarui Tianjin Technology Development Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-12
Anticipated expiration: 2031-10-29

Abstract

The utility model provides a pump-frequency conversion water supply device which comprises three phases of electricity, three frequency conversion water supply branches connected with the three phases of electricity in parallel and a main control loop connected with the frequency conversion water supply branches, wherein each frequency conversion water supply branch comprises a first circuit breaker, a frequency converter and a water pump, the first circuit breaker is connected with the three phases of electricity through a second circuit breaker, the first circuit breaker is connected with U1, V1 and W1 terminals of the frequency converter, and U2, V2 and W2 terminals of the frequency converter are connected with the water pump. According to the utility model, water can be supplied in turn by matching the three groups of water pumps with the PLC, the equipment has low cost and good stability, the actual water supply requirement can be conveniently met, when a certain group of water pumps fails, operators can be timely informed, the independent work of the water pump groups is not interfered with each other, and the operation is convenient.

Description

One-pump one-frequency conversion water supply equipment

Technical Field

The utility model relates to the technical field of water supply equipment, in particular to a pump-frequency conversion water supply equipment.

Background

The water supply equipment refers to a water supply device which is automatically started and stopped and outputs a certain flow and a certain lift in unit time. Traditional water supply equipment is tower water supply equipment, and its control mode is simple, easy operation, and economic advantage is comparatively obvious, mainly is applied to high-rise building, but it has the basis investment higher, and motor starting current is great and maintain inconvenient scheduling problem.

The water supply equipment requires stable water supply, the equipment is easy to damage once the water supply is unstable, normal production and life can be influenced, normal life of residents can be influenced in residential areas, and the production schedule can be influenced in factory production plants. Therefore, the constant pressure water supply can solve the adverse effect brought by the above problems, most water supply equipment can basically achieve the purpose of constant pressure water supply along with the continuous development of water supply technology, and the constant pressure water supply can ensure 24-hour uninterrupted constant pressure water supply and has the advantages of non-negative pressure variable frequency water supply equipment. And the water supply equipment can adjust the rotating speed of the pump according to the water consumption, can also achieve the energy-saving effect on the basis of realizing constant-pressure water supply, and is controlled by the controller through low-frequency operation in a water low-valley section and high-frequency operation in a water peak section. However, when the frequency converter is arranged, the current constant-pressure water supply equipment can only be combined with a single pump unit by sampling one frequency converter, so that the cost of the water supply equipment is high, and the control is not convenient and flexible enough.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a pump-variable frequency water supply apparatus.

In order to solve the technical problems, the utility model adopts the technical scheme that: a pump frequency conversion water supply equipment, including three phase electricity, with three parallelly connected frequency conversion water supply branch roads of three phase electricity and with the main control circuit that the frequency conversion water supply branch road links to each other, every the frequency conversion water supply branch road all includes first circuit breaker, converter and water pump, first circuit breaker pass through the second circuit breaker with the three phase electricity links to each other, first circuit breaker with the U1, V1, the W1 terminal of converter link to each other, the U2, V2, the W2 terminal of converter with the water pump links to each other.

In the utility model, preferably, the master control circuit comprises a PLC controller, the I0 and I1 terminals of the PLC controller are externally connected with master switches for manual and automatic switching, the terminals I2, I3 and I4 of the PLC controller are externally connected with a first button SB1, a second button SB2 and a third button SB3 respectively, the terminals I8, I9 and I10 of the PLC controller are externally connected with a first relay KA1, a second relay KA2 and a third relay KA3 respectively, the I16 terminal of the PLC is externally connected with a reset button ZSB, the I19 and I20 terminals of the PLC are respectively externally connected with a valve opening relay and a valve closing relay, the first button SB1, the second button SB2 and the third button SB3 are respectively used for controlling the water pump to be started, the first relay KA1, the second relay KA2 and the third relay KA3 are used for receiving water pump fault signals of the variable-frequency water supply branch corresponding to the first relay KA1, the second relay KA2 and the third relay KA 3.

In the utility model, preferably, a display screen is externally connected to the PLC controller, a dc power supply terminal for supplying 24V dc power is externally connected to the display screen through a third breaker QFS1, an I15 terminal of the PLC controller is externally connected to an electric energy quality monitor PD, and the dc power supply terminal is externally connected to the PLC controller through a switching power supply.

In the present invention, preferably, a first audible and visual alarm HA1 and a second audible and visual alarm HA2 are externally connected to Q4 and Q5 terminals of the PLC controller, and Q8, Q9 and Q10 of the PLC controller are respectively connected to normally closed contacts of the first relay KA1, the second relay KA2 and the third relay KA 3.

In the utility model, preferably, the variable-frequency water supply branch is respectively externally connected with a fourth relay KA11, a fifth relay KA21 and a sixth relay KA31, and the fourth relay KA11, the fifth relay KA21 and the sixth relay KA31 are respectively used for controlling the operation of a water pump of the variable-frequency water supply branch.

In the present invention, preferably, terminals Q14 and Q15 of the PLC controller are externally connected with normally closed contacts of a seventh relay KA7 and an eighth relay KA8, respectively, a terminal L1 of the PLC controller is connected with normally open contacts of the seventh relay KA7 and the eighth relay KA8, a terminal L1 of the PLC controller is further externally connected with normally closed contacts of a ninth relay KA9 and a tenth relay KA10, and the seventh relay KA7 and the eighth relay KA8 are respectively used for controlling opening and closing of the electric valve.

In the present invention, preferably, the reserved interface of the PLC controller is externally connected with a user pressure transmitter, a water tank level transmitter, a flow transmitter and a water inlet pressure transmitter through a distributor, respectively, and the user pressure transmitter, the water tank level transmitter, the flow transmitter and the water inlet pressure transmitter are used for acquiring user pressure data, water tank level data, flow data and water inlet pressure data, respectively.

In the present invention, preferably, the first audible and visual alarm HA1 and the second audible and visual alarm HA2 are respectively used for low water level alarm and fault alarm, and the first audible and visual alarm HA1 and the second audible and visual alarm HA2 are both set as flashing buzzers.

The utility model has the advantages and positive effects that: the three groups of water pumps are matched with the PLC control to supply water in turn, so that the cost of the equipment is low, the running stability of the equipment is good, the actual water supply requirement can be met conveniently, an operator can be informed in time when a certain group of water pumps break down, the independent work of the water pump groups is not interfered with each other, and the operation is convenient; be convenient for carry out manual automatic switch to equipment through setting up master switch, because the PLC controller is external to have the touch-sensitive screen, the data display that the touch-sensitive screen can will gather is convenient for operating personnel and in time looks over, because the I8 of PLC controller, I9, I10 terminal is external respectively HAs first relay KA1, second relay KA2 and third relay KA3, when certain water pump goes out the trouble problem, corresponding first relay KA1, second relay KA2 and third relay KA3 closed switch-on, the water pump scram of trouble water pump place frequency conversion water supply branch road is closed, simultaneously second audible-visual annunciator HA2 lights and buzzes and then in time reminds operating personnel, and is easy and simple to handle.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic diagram of a variable frequency water supply branch of a pump-variable frequency water supply apparatus of the present invention;

FIG. 2 is a wiring diagram of a PLC controller of a pump-inverter water supply apparatus of the present invention;

FIG. 3 is a wiring diagram of a reserved interface of a PLC controller of a pump-inverter water supply apparatus of the present invention;

fig. 4 is a wiring diagram of a PLC controller of a pump-inverter water supply apparatus of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the present invention provides a pump-variable frequency water supply device, which includes three phases of electricity, three variable frequency water supply branches connected in parallel with the three phases of electricity, and a main control loop connected to the variable frequency water supply branches, each variable frequency water supply branch includes a first circuit breaker, a frequency converter, and a water pump, the first circuit breaker is connected to the three phases of electricity through a second circuit breaker, the first circuit breaker is connected to U1, V1, and W1 terminals of the frequency converter, and U2, V2, and W2 terminals of the frequency converter are connected to the water pump. Can supply water in turn through mutually supporting of three water pumps of group and PLC control, the cost of equipment is low, and equipment stability is good, is convenient for satisfy actual water supply demand, can in time inform operating personnel when wherein a set of water pump breaks down, and independent work mutually noninterferes between the water pump group, and the operation is convenient.

As shown in fig. 2 and 4, in the present embodiment, the master control circuit further includes a PLC controller, the I0 and I1 terminals of the PLC controller are externally connected with master switches for manual and automatic switching, the I2, I3 and I4 terminals of the PLC controller are externally connected with a first button SB1, a second button SB2 and a third button SB3, the I8, I9 and I10 terminals of the PLC controller are externally connected with a first relay KA1, a second relay KA2 and a third relay KA3, the I16 terminal of the PLC controller is externally connected with a reset button ZSB, the I19 and I20 terminals of the PLC controller are externally connected with an open relay and a close relay, the first button SB1, the second button SB2 and the third button SB3 are respectively used for controlling the opening of the water pump, and the first relay 1, the second relay 2 and the third relay 3 are used for receiving an inverter fault signal of the water pump corresponding to the water supply branch KA.

In this embodiment, further, the PLC controller is externally connected with a display screen, the display screen is externally connected with a dc power supply terminal for providing 24V dc power through a third breaker QFS1, the I15 terminal of the PLC controller is externally connected with a power quality monitor PD, and the PLC controller is externally connected with a dc power supply terminal through a switching power supply.

In the embodiment, a first audible and visual alarm HA1 and a second audible and visual alarm HA2 are externally connected to Q4 and Q5 terminals of the PLC controller, and Q8, Q9 and Q10 of the PLC controller are respectively connected to normally closed contacts of the first relay KA1, the second relay KA2 and the third relay KA 3.

In the embodiment, further, the variable-frequency water supply branch is respectively externally connected with a fourth relay KA11, a fifth relay KA21 and a sixth relay KA31, and the fourth relay KA11, the fifth relay KA21 and the sixth relay KA31 are respectively used for controlling the operation of a water pump of the variable-frequency water supply branch.

In this embodiment, further, terminals Q14 and Q15 of the PLC controller are externally connected with normally closed contacts of a seventh relay KA7 and an eighth relay KA8, respectively, a terminal L1 of the PLC controller is connected with normally open contacts of a seventh relay KA7 and an eighth relay KA8, a terminal L1 of the PLC controller is also externally connected with normally closed contacts of a ninth relay KA9 and a tenth relay KA10, and the seventh relay KA7 and the eighth relay KA8 are respectively used for controlling opening and closing of the electric valve.

As shown in fig. 3, in this embodiment, further, the reserved interface of the PLC controller is externally connected with a user pressure transmitter, a water tank level transmitter, a flow transmitter and a water inlet pressure transmitter through a distributor, and the user pressure transmitter, the water tank level transmitter, the flow transmitter and the water inlet pressure transmitter are respectively used for collecting user pressure data, water tank level data, flow data and water inlet pressure data.

In the present embodiment, further, the first audible and visual alarm HA1 and the second audible and visual alarm HA2 are respectively used for low water level alarm and fault alarm, and both the first audible and visual alarm HA1 and the second audible and visual alarm HA2 are set as flashing buzzers.

The working principle and the working process of the utility model are as follows: the master switch is used for switching manual automatic gear, and its 2 # ports link to each other with 3 # ports when the master switch hits automatic gear, and its 1 # port links to each other with 4 # ports when the master switch hits manual gear, is convenient for carry out manual automatic switch to equipment through setting up master switch, because the PLC controller is external to have the touch-sensitive screen, and the touch-sensitive screen has 24V direct current power supply terminal to provide steady voltage for the touch-sensitive screen through D001 terminal, D002 terminal is external. The first button SB1, the second button SB2 and the third button SB3 are used for controlling the opening of the water pump respectively, the fourth relay KA11, the fifth relay KA21 and the sixth relay KA31 are electrified, the normally open contacts of the relays are closed, the variable-frequency water supply branch is connected, and the corresponding water pump starts to work. Because the I8, I9, I10 terminal of PLC controller are external respectively to have first relay KA1, second relay KA2 and third relay KA3, when a certain water pump goes out the trouble problem, corresponding first relay KA1, second relay KA2 and third relay KA3 close the switch-on, the water pump scram of the frequency conversion water supply branch road that trouble water pump belongs to is closed, second audible-visual annunciator HA2 lights and buzzes and then in time reminds operating personnel simultaneously. The reserved interface of PLC controller is external user pressure transmitter, water tank liquid level transmitter, flow transmitter and the pressure transmitter of intaking respectively through the distributor, user pressure transmitter, water tank liquid level transmitter, flow transmitter and the pressure transmitter of intaking are used for gathering user pressure data, water tank liquid level data, flow data and the pressure data of intaking respectively, and first audible-visual annunciator HA1 lights and buzzes and reports to the police in order to remind operating personnel in time to maintain when the low water level condition appears. According to the utility model, water can be supplied in turn by matching the three groups of water pumps with the PLC, the equipment has low cost and good stability, the actual water supply requirement can be conveniently met, when a certain group of water pumps breaks down, operators can be timely informed, the independent operation work of the water pump groups is not interfered with each other, and the operation is convenient.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. A pump frequency conversion water supply equipment, its characterized in that, including three phase electricity, with three parallelly connected frequency conversion water supply branch roads of three phase electricity and with the master control return circuit that the frequency conversion water supply branch road links to each other, every the frequency conversion water supply branch road all includes first circuit breaker, converter and water pump, first circuit breaker pass through the second circuit breaker with three phase electricity links to each other, first circuit breaker with the U1, V1, the W1 terminal of converter link to each other, the U2, V2, the W2 terminal of converter with the water pump links to each other.

2. A pump-variable frequency water supply apparatus according to claim 1, wherein the main control circuit includes a PLC controller, the I0 and I1 terminals of the PLC controller are externally connected with a master switch for manual and automatic switching, the terminals I2, I3 and I4 of the PLC controller are externally connected with a first button SB1, a second button SB2 and a third button SB3 respectively, the terminals I8, I9 and I10 of the PLC controller are externally connected with a first relay KA1, a second relay KA2 and a third relay KA3 respectively, the I16 terminal of the PLC is externally connected with a reset button ZSB, the I19 and I20 terminals of the PLC are respectively externally connected with a valve opening relay and a valve closing relay, the first button SB1, the second button SB2 and the third button SB3 are respectively used for controlling the water pump to be started, the first relay KA1, the second relay KA2 and the third relay KA3 are used for receiving water pump fault signals of the variable-frequency water supply branch corresponding to the first relay KA1, the second relay KA2 and the third relay KA 3.

3. The apparatus as claimed in claim 2, wherein the PLC controller is externally connected with a display screen, the display screen is externally connected with a dc power supply terminal for supplying 24V dc power through a third circuit breaker QFS1, the PLC controller is externally connected with a power quality monitor PD at an I15 terminal, and the PLC controller is externally connected with the dc power supply terminal through a switching power supply.

4. The water supply equipment with one pump and one variable frequency according to claim 2, wherein the terminals Q4 and Q5 of the PLC controller are externally connected with a first audible and visual alarm HA1 and a second audible and visual alarm HA2, and Q8, Q9 and Q10 of the PLC controller are respectively connected with the normally closed contacts of the first relay KA1, the second relay KA2 and the third relay KA 3.

5. The variable-frequency water supply equipment according to claim 1, wherein the variable-frequency water supply branch is externally connected with a fourth relay KA11, a fifth relay KA21 and a sixth relay KA31 respectively, and the fourth relay KA11, the fifth relay KA21 and the sixth relay KA31 are used for controlling the operation of the water pump of the variable-frequency water supply branch respectively.

6. The water supply equipment with one pump and one variable frequency according to claim 2, wherein the terminals Q14 and Q15 of the PLC controller are externally connected with normally closed contacts of a seventh relay KA7 and an eighth relay KA8 respectively, the terminal L1 of the PLC controller is connected with normally open contacts of the seventh relay KA7 and the eighth relay KA8, the terminal L1 of the PLC controller is also externally connected with normally closed contacts of a ninth relay KA9 and a tenth relay KA10 respectively, and the seventh relay KA7 and the eighth relay KA8 are used for controlling the opening and closing of an electric valve respectively.

7. The pump-variable frequency water supply device according to claim 2, wherein the reserved interface of the PLC controller is externally connected with a user pressure transmitter, a water tank level transmitter, a flow transmitter and a water inlet pressure transmitter through a distributor, respectively, and the user pressure transmitter, the water tank level transmitter, the flow transmitter and the water inlet pressure transmitter are used for collecting user pressure data, water tank level data, flow data and water inlet pressure data, respectively.

8. A pump-variable frequency water supply equipment according to claim 4, characterized in that the first audible and visual alarm HA1 and the second audible and visual alarm HA2 are used for low water level alarm and fault alarm, respectively, and the first audible and visual alarm HA1 and the second audible and visual alarm HA2 are set as flashing buzzers.