CN2244573Y

CN2244573Y - Water-supplying auto-controller for frequency-distributing-converting speed regulator

Info

Publication number: CN2244573Y
Application number: CN 94205079
Authority: CN
Inventors: 李智敏
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-19
Filing date: 1994-03-19
Publication date: 1997-01-08
Anticipated expiration: 2004-03-19

Abstract

The utility model relates to a water supplying auto-controller for a frequency-distributing-converting speed regulator. A selsyn transmitter (2) can make the physical quantity of micro water-level change converted into electrical signals; the electrical signals can be input to an interface of a frequency changing speed control device (6) to complete the automatic control of a water pump through the filtering delayed time processing of a bridge rectifier and an RC delay circuit and the voltage control of an impedance match. The utility model can make the operation power saving rate of opening a loop of an alternate current frequency speed control device on the water pump enhanced from 30% to more than 50%.

Description

Distribution transforming is the water supply self-con-tained unit of governor frequently

The utility model relates to a kind of automatic water supply system, belongs to the distribution transforming indusqtrial water supply self-con-tained unit of governor frequently.

A big pond is generally all arranged in the industrial water supply system of large enterprise, in order to keep certain water level height, traditional method is to adopt upper and lower electrode method, but this method is often leaned on to such an extent that too closely pump motor is started again and again because of upper and lower electrode, and that upper and lower electrode is separated by is too far away, will cause again the reservoir drawdown a lot of and make each time starting of pump station to the circulation that stops will to have hundreds of ton water by white from loss.Therefore, upper and lower electrode method is inadvisable; Other method is that pressure cell is installed at the bottom, change the small SEA LEVEL VARIATION of reflection with pressure, thereby the control AC frequency conversion speed regulator is regulated the size of discharge, but this method is also usually because the pond is darker, water-bed mud bed thickness, and cause low precision in this way, difficulty of construction to be not easy greatly to promote; Also have a kind of method to be to use variable-frequency governor, the operator on duty then needs according to the industrial water amount, regulator potentiometer knob again and again, and this method is control artificially mainly, usually the water yield is opened too muchly, has wasted many electricity consumptions, and this method is also inadvisable.

The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of distribution transforming water supply installation of governor frequently is provided, changes the physical quantity in the water supply process flow process into the signal of telecommunication, and with the automatic Interface Matching of frequency converter, the control of realization automatic water-supply improves water pump electric energy and functional reliability thereof.

Above-mentioned purpose is achieved in that the distribution transforming water supply installation of governor frequently, adopting selsyn is principal character as signal conversion element, therefore, native system mainly comprises a cover level sensor assembly, signal processing circuit, AC frequency conversion speed regulator and work water pump in global design.Level sensor assembly in the water supply self-con-tained unit has mainly used a non-contact type synchro transmitter, one spiral arm or disk are installed on its axis of rotation, float of a side suspension of spiral arm is put into reservoir, dress lead in the float chamber, form constant weight, make the float state of being kept upright in water, be equipped with a counterweight block at the other end of spiral arm, its weight can just make the other end connect stretching the getting final product of tether of float.Float is to prevent the water level fluctuation that causes because of stormy waves, waveproof cover on the outer mask of float.The signal processing circuit of being formed by bridge rectifier and RC delay circuit that connects the synchro transmitter output.In the RC delay circuit, pay special attention to electrochemical capacitor C ₁, C ₂Selection, must be controlled in 1000 μ～1500 μ scopes, after time-delay, filtering are handled again through W ₁With R ₂Carry out impedance matching, voltage adjustment, make it output and be controlled at 0～10V DC voltage scope, last automatic interface to frequency converter 0～10V is again by Frequency Converter Control work water pump.

The distribution transforming advantage of the water supply self-con-tained unit of governor frequently is:

1. this installation cost is low, comprises about 350 yuan of on-the-spot installation;

2. after this device being installed, can only improve 50% once again with original with the power saving rate 30% of frequency converter;

3. realize automatic accurate water supply, robot control system(RCS) is reliable and stable, and long-time running need not safeguarded;

Can with the supporting use of AC frequency conversion speed regulator of the various plates of domestic and international 0.4KW～280KW.

Below in conjunction with accompanying drawing an embodiment of the present utility model is described in further detail.

Fig. 1 is the distribution transforming system architecture schematic diagram of the water supply self-con-tained unit of governor frequently

Fig. 2 is the distribution transforming electrical schematic diagram of the water supply self-con-tained unit of governor frequently

Among Fig. 1: 1, pouring weight 2, synchro transmitter 3, support 4, water pump 5, motor 6, AC frequency conversion speed regulator 7, signal processing circuit 8, knife switch 9, reservoir 10, overfall gap 11, feed water inlet 12, anti-good cover 13, float 14, spiral arm

Among Fig. 2: B is that control transformer Z is a synchro transmitter

Distribution transforming is the water supply self-con-tained unit of governor frequently, uses non-contact type synchro transmitter 2.A spiral arm 14 is installed on its axis of rotation, also available disk replaces, float 13 of a side suspension of spiral arm is put in people's reservoir, dress lead in the float chamber, form constant weight, make float 13 state of being kept upright in water, be equipped with a counterweight block 1 at the other end of spiral arm 14, it is stretching that its weight can just make the other end connect the tether of float.For prevent float because of stormy waves in water level fluctuation, long tube waveproof cover 12 on float 13 outer masks.Aspect the wiring of circuit, the utility model is on five terminals of synchro transmitter 2, and a terminal is idle, only uses wherein four terminals, and signal is entered by behind 4 * 2CZ82 bridge rectifier, again through RC delay circuit and W by synchro transmitter 2 outputs ₁With R ₂Organize anti-coupling, voltage adjustment, C ₁, C ₂Be controlled at 1000 μ～1500 μ scopes.The automatic interface of last input AC variable-frequency governor 6, this place's voltage is 0～10V, realizes that control is supplied water automatically.

Claims

1. the water supply self-con-tained unit of a distribution transforming frequency governor comprises a level sensor assembly, at its output a signal processing circuit (7) is arranged, and treated steady voltage signal directly enters AC frequency conversion speed regulator (6) control of pump (4), it is characterized in that:

A, become the conversion element of the signal of telecommunication as water level signal with synchro transmitter (2),

B, the end system of the spiral arm (14) of synchro transmitter shaft have a float (13), the other end be counterweight block (1), dress lead in the float, float outer cover one a long wave resistance is put (12).

2. self-con-tained unit according to claim 1 is characterized in that: from the ac signal of synchro transmitter (2) output is the automatic interface of importing variable-frequency governor (6) after bridge rectifier, RC delay circuit and impedance matching again.