CN210859261U - Overhaul water pump automatic control system based on ultrasonic measurement and control device - Google Patents
Overhaul water pump automatic control system based on ultrasonic measurement and control device Download PDFInfo
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- CN210859261U CN210859261U CN201920819143.3U CN201920819143U CN210859261U CN 210859261 U CN210859261 U CN 210859261U CN 201920819143 U CN201920819143 U CN 201920819143U CN 210859261 U CN210859261 U CN 210859261U
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Abstract
The utility model relates to a hydraulic turbine overhauls the field, concretely relates to overhaul water pump automatic control system based on ultrasonic measurement and control device, control system includes the ultrasonic level gauge, computer monitoring system of the whole factory, overhaul water pump automatic control box and two power/signal transfer boxes, two power/signal transfer boxes all are connected with overhaul water pump automatic control box electricity, overhaul water pump automatic control box and computer monitoring system communication connection of the whole factory, be equipped with on the overhaul water pump control box and open and stop 1/2 pump change-over switch automatically, this automatic control system utilizes unit tailwater to overhaul the platform, conveniently realize the installation of ultrasonic level gauge, realize automatic control, and totally fit for the interior environment of tailwater pipe; the upper computer of the computer monitoring system can monitor the water level of the tail water pipe and has an out-of-limit alarm function, and operators can master the water level change situation at any time to improve the controllability of the tail water level; the maintenance water pump is automatically started/stopped on site, and the labor intensity of operators is reduced.
Description
Technical Field
The utility model relates to a hydraulic turbine overhauls the field, concretely relates to overhauls water pump automatic control system based on ultrasonic wave measurement and control device.
Background
When a unit of a hydraulic power plant is overhauled, water in a tail water pipe is drained when the overhaul is started, and leakage water of a tail water gate is continuously drained in the overhaul process so as to ensure the operation safety of relevant areas and avoid flooding the plant and the like. Because of the structural reasons, the water level change in the unit draft tube is inconvenient to install and fix the water level measuring element for measuring, so that the traditional maintenance water pump generally observes the draft tube water level through an operator on site and starts/stops the maintenance water pump to pump water in due time manually.
The traditional manual control maintenance water pump has the following problems:
1. due to structural reasons, the water level change in the draft tube of the unit of the hydraulic power plant is inconvenient to install and fix a water level measuring element for measuring and realizing automatic control.
2. The water level is observed by depending personnel, so that the operating personnel can not master the water level change condition at any time, and particularly, uncontrollable conditions such as plant flooding and the like easily occur when accidental leakage is large. The water pump is started and stopped manually on site, so that the labor intensity of operators is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an overhaul water pump automatic control system based on ultrasonic wave measurement and control device.
To achieve the purpose, the utility model adopts the following technical proposal:
an automatic control system of a maintenance water pump based on an ultrasonic measurement and control device is provided, which comprises a first unit, a second unit, a third unit and a fourth unit, wherein maintenance platforms are respectively arranged in the manholes of the tail water pipes of the first unit, the second unit, the third unit and the fourth unit, the control system comprises an ultrasonic liquid level meter, a whole-plant computer monitoring system, an automatic control box of the maintenance water pump and two power/signal switching boxes, the ultrasonic liquid level meter is arranged on one of the maintenance platforms, the two power/signal switching boxes are respectively arranged between the first unit and the second unit and between the third unit and the fourth unit, the first unit and the second unit are electrically connected with one of the power/signal switching boxes, the third unit and the fourth unit are electrically connected with the other power/signal switching box, and the two power/signal switching boxes are electrically connected with the automatic control box of the maintenance water pump, the overhaul water pump automatic control box is in communication connection with a whole-plant computer monitoring system, an automatic start-stop No. 1/2 pump change-over switch is arranged on the overhaul water pump control box, and the first unit, the second unit, the third unit and the fourth unit are all provided with overhaul water pump control boxes electrically connected with the overhaul water pump automatic control box.
As an optimal scheme of the maintenance water pump automatic control system based on the ultrasonic measurement and control device, a pump change-over switch 1/2 is automatically started and stopped and is arranged on a box door of a corresponding maintenance water pump control box.
As an optimized scheme of the maintenance water pump automatic control system based on the ultrasonic measurement and control device, the maintenance water pump automatic control box is fixedly installed beside one maintenance water pump control box.
As an optimal scheme of the automatic control system of the water pump maintenance based on the ultrasonic measurement and control device, the automatic control box of the water pump maintenance is provided with an analog input LCU port, and the port is electrically connected with a computer monitoring system of a whole plant.
As an optimal scheme of the automatic control system of the maintenance water pump based on the ultrasonic measurement and control device, an AC220/DC24V switching power supply for supplying power to the ultrasonic liquid level meter is arranged in an automatic control box of the maintenance water pump.
The utility model has the advantages that:
1. the installation of the ultrasonic liquid level meter and the automatic control are conveniently realized by utilizing the unit tail water maintenance platform, and the ultrasonic liquid level meter is completely suitable for the environment in a tail water pipe;
2. the upper computer of the computer monitoring system can monitor the water level of the tail water pipe and has an out-of-limit alarm function, and operators can master the water level change situation at any time to improve the controllability of the tail water level;
3. the maintenance water pump is automatically started/stopped on site, and the labor intensity of operators is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.
Fig. 1 shows a main power circuit diagram of a service water pump.
Fig. 2 shows an automatic control wiring diagram of the service water pump.
Fig. 3 is a diagram of an automatic control loop of the service water pump.
Fig. 4 is a wiring diagram of ultrasonic level gauge signals in an automatic dynamic expansion and contraction loop diagram of a service water pump.
FIG. 5 is a wiring diagram showing signal expansion of an ultrasonic level meter in an automatic dynamic expansion and folding loop diagram for a service water pump
Fig. 6 is a wiring diagram of an expansion relay in an automatic expansion road diagram of a service water pump.
In the figure: 1. the device comprises a first unit, a second unit, a third unit, a fourth unit, a draft tube manhole, a 6 overhauling platform, a 7 ultrasonic liquid level meter and a water level meter.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 6, an automatic control system of an inspection water pump based on an ultrasonic measurement and control device comprises a first unit, a second unit 2, a third unit 3 and a fourth unit 4, wherein an inspection platform 6 is arranged in a tail water pipe manhole 5 of the first unit, the second unit 2, the third unit 3 and the fourth unit 4, the control system comprises an ultrasonic liquid level meter 7, a whole plant computer monitoring system, an inspection water pump automatic control box and two power/signal switching boxes, the ultrasonic liquid level meter 7 is arranged on one inspection platform 6, the two power/signal switching boxes are respectively arranged between the first unit and the second unit 2 and between the third unit 3 and the fourth unit 4, the first unit and the second unit 2 are electrically connected with one power/signal switching box, the third unit 3 and the fourth unit 4 are electrically connected with the other power/signal switching box, two power/signal transfer boxes all are connected with maintenance water pump automatic control box electricity, and maintenance water pump automatic control box is connected with the computer monitoring system communication of whole factory, is equipped with the automation on the maintenance water pump control box and opens and stop No. 1/2 pump change over switch, and No. one unit, No. two unit 2, No. three unit 3 and No. four unit 4 all are furnished with the maintenance water pump control box of being connected with maintenance water pump automatic control box electricity.
The automatic on-off 1/2 pump change-over switch is arranged on the door of the corresponding service water pump control box.
The maintenance water pump automatic control box is fixedly arranged beside one maintenance water pump control box.
The automatic control box for the maintenance water pump is provided with an analog input LCU port which is electrically connected with a computer monitoring system of the whole plant.
An AC220/DC24V switching power supply for supplying power to the ultrasonic liquid level meter 7 is arranged in the automatic control box of the service water pump.
The working principle is as follows:
1. after a manhole 5 of a tail water pipe of the maintenance unit is opened, an ultrasonic liquid level meter 7 is temporarily installed on a maintenance platform 6 in the maintenance unit to measure the water level of the tail water pipe, the on-site automatic start/stop control of the maintenance water pump is realized according to upper and lower limit contacts of a set output water level, and simultaneously, analog quantity output by the liquid level meter is accessed into a computer monitoring system of a whole plant of the factory to realize remote real-time water level monitoring and set out-of-limit alarm of a central control room.
2. Four units are configured with an ultrasonic liquid level meter 7 for measuring the water level of a tail water pipe during maintenance, when a certain unit is maintained, the ultrasonic liquid level meter is installed on a tail water pipe maintenance platform 6, the four units share an automatic control loop, as shown in figure 2, a signal of the ultrasonic liquid level meter 7 is connected into a maintenance water pump automatic control box through a power supply/signal switching box, and a control contact is output to a #1 or #2 pump operation loop to automatically control the start/stop of a water pump after passing through an in-box automatic control loop. Can open through "automatically open and stop 1/2 pump change over switch" and select which pump of control is automatic to start/stop, open automatically and stop 1/2 pump change over switch and install on this control box door, can conveniently switch over the operation, see fig. 3 and show, above ultrasonic wave level gauge 7 and its cable lead are installed temporarily, and two "power/signal keysets" respectively fixed mounting at a unit, No. two unit 2 and No. three unit 3, between the tail water manhole of No. four unit 4, "overhaul water pump automatic control box" fixed mounting is near overhauing water pump control box, it is for convenient wiring to set up "power/signal keysets".
3. An output contact of the ultrasonic liquid level meter 7 working power supply DC24V controls an expansion relay 1-4 ZJ through a DC24V power supply, and an expansion contact is connected into a water pump control loop of AC380V to realize automatic control, as shown in figure 3, the ultrasonic liquid level meter ensures that the ultrasonic liquid level meter works under the environment of a draft tube with safe voltage, and the DC24V working power supply is taken from an AC220/DC24V switching power supply arranged in a 'maintenance water pump automatic control box'.
4. The analog input LCU port of the ultrasonic liquid level meter 7 is connected to a public LCU of the monitoring system of the whole plant, an upper limit and a lower limit are set on an upper computer for alarming, and a real-time tail water level value is displayed on a monitoring picture of a drainage system of the upper computer.
It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.
Claims (5)
1. An automatic control system of an inspection water pump based on an ultrasonic measurement and control device comprises a first unit, a second unit (2), a third unit (3) and a fourth unit (4), wherein an inspection platform (6) is arranged in a tail water pipe manhole (5) of the first unit, the second unit (2), the third unit (3) and the fourth unit (4), the automatic control system is characterized in that the control system comprises an ultrasonic liquid level meter (7), a whole plant computer monitoring system, an inspection water pump automatic control box and two power supply/signal transfer boxes, the ultrasonic liquid level meter (7) is arranged on one of the inspection platforms (6), the two power supply/signal transfer boxes are respectively arranged between the first unit and the second unit (2), between the third unit (3) and the fourth unit (4), the first unit and the second unit (2) are electrically connected with one of the power supply/signal transfer boxes, no. three units (3) and No. four units (4) all are connected with another power supply signal transfer box electricity, two power supply signal transfer boxes all are connected with maintenance water pump automatic control box electricity, maintenance water pump automatic control box is connected with whole factory computer monitoring system communication, it stops 1/2 pump change over switch to be equipped with the automation on the maintenance water pump control box, No. one unit, No. two unit (2), No. three unit (3) and No. four unit (4) all are furnished with the maintenance water pump control box of being connected with maintenance water pump automatic control box electricity.
2. The automatic control system for the service water pump based on the ultrasonic measurement and control device as claimed in claim 1, wherein a pump change-over switch 1/2 # for automatic start and stop is arranged on a door of a corresponding service water pump control box.
3. The automatic overhaul water pump control system based on the ultrasonic measurement and control device as claimed in claim 1, wherein the overhaul water pump automatic control box is fixedly installed beside one overhaul water pump control box.
4. The automatic control system of the service water pump based on the ultrasonic measurement and control device as claimed in claim 1, wherein the automatic control box of the service water pump is provided with an analog input LCU port, and the port is electrically connected with a factory computer monitoring system.
5. The automatic control system of the service water pump based on the ultrasonic measurement and control device as claimed in claim 1, wherein an AC220/DC24V switch power supply for supplying power to the ultrasonic level gauge (7) is arranged in the automatic control box of the service water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920819143.3U CN210859261U (en) | 2019-06-03 | 2019-06-03 | Overhaul water pump automatic control system based on ultrasonic measurement and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920819143.3U CN210859261U (en) | 2019-06-03 | 2019-06-03 | Overhaul water pump automatic control system based on ultrasonic measurement and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210859261U true CN210859261U (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920819143.3U Active CN210859261U (en) | 2019-06-03 | 2019-06-03 | Overhaul water pump automatic control system based on ultrasonic measurement and control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210859261U (en) |
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2019
- 2019-06-03 CN CN201920819143.3U patent/CN210859261U/en active Active
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