CN2196297Y

CN2196297Y - Pipe leak monitor

Info

Publication number: CN2196297Y
Application number: CN 94204155
Authority: CN
Inventors: 岳成山
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-08
Filing date: 1994-03-08
Publication date: 1995-05-03
Anticipated expiration: 2004-03-08

Abstract

The utility model relates to the field of pipe leak measuring, in particular to a pipe leak monitor for the heat supply network, comprising pipes, computers, LCD panels, sensors, warning circuits and measuring circuits, wherein, the sensors are connected with the pipes by the connection points 2, 3 of the steel spring in parallel. The warning circuits comprise the direct coupled amplifier with the core of the triode BG1, BG2 driving the connection points of relay J to turn on the oscillator which is used for generating the oscillator signal and sounding the speaking. The switch K2 of the input end in the measuring circuit is connected with the circuit, and the output end is connected with the LCD panel. The utility model achieves simple structure, reasonable design, high accuracy of measurement and fast warning.

Description

Pipe leak monitor

The utility model belongs to the pipe leakage fields of measurement, especially for heat supply network pipe leakage control measurement.

At present, along with China's economic construction development, the directly buried pipeline leakage problem in the urban construction is more and more, and people can only could find pipe leakage when ducted leak of liquid is gone out ground, therefore, bring a lot of difficult problems for the city directly buried pipeline.

The purpose of this utility model be to provide a kind of reasonable in design, simple in structure, measuring accuracy is high, the fast pipe leakage control measurement instrument of reporting to the police.

The utility model is realized as follows: a kind of pipe monitoring measuring instrument, it comprises pipeline, computing machine, LCD panel, sensor, warning circuit and metering circuit etc., said sensor be by the steel spring pipe and on

contact

2,3 series connection after be connected on the circuit of pipe joint, warning circuit also comprises by triode BG ₁, BG ₂Be its output terminal of straight even amplifier of core composition and the contact adhesive on the relay drive relay J, and connect, be used to produce the oscillator signal loudspeaker K switch on the input end on the metering circuit takes place in oscillator ₃Join with circuit, its output terminal is connected to LCD panel LCD.

The utlity model has following advantage:

The utility model has adopted the joint on the pipe-line to be connected to sensor, itself and warning circuit, the metering circuit composition measuring instrument that joins, autonomous intelligence is arranged, can use separately, it matches with computing machine and uses special software can show leakage pipe, place and position, accuracy can bring up to 99%

Description of drawings:

Fig. 1 is an overall block-diagram of the present utility model.

Fig. 2 is the utility model electrical schematic diagram.

Fig. 3 is the utility model sensor construction synoptic diagram.

Fig. 4 is that the utility model sensor is connected to synoptic diagram on the circuit.

Among the figure: 1 steel spring pipe, 2 magnet, 3 electricity groups, 4 plastic foams, 5 casings.

Below in conjunction with accompanying drawing in detail the utility model most preferred embodiment is described in detail:

Shown in Fig. 1～4

Present embodiment pipe leakage monitor, said sensor be by the steel spring pipe and on

contact

2,3 serial connection after be connected on the circuit of pipeline, when pipe leakage, liquid produces magnetic field, relay J this moment with magnet 2 float levitatings around the steel pipe _1-3Adhesive and the resistance that will finish are in advance connected with line impedance, make the direct current resistance value parameter in the circuit pass through Q-switch K ₂Feed back in the warning circuit triode BG on the warning circuit ₁, BG ₂Obtain bias current I _bAfter enter and full close state, make the relay J action, normally opened contact is connected, and the oscillator electric current is connected, warning circuit is reported to the police by loudspeaker, said metering circuit, its input end passes through K switch ₃Join with circuit, its output terminal and LCD panel LD join, and it adopts the resistance on the rule of three measuring circuit, simultaneously with K switch ₃During connection, be attempted by K switch ₃On computing machine will finish the resistance parameter that is stored in the computing machine in advance and show by CRT, reach the number marking of place, position and pipeline that measuring channel leaks, so that the maintenance personal gets rid of the pipeline leakage failure in time.

Claims

1, a kind of pipe leakage control measurement instrument, comprise compositions such as pipeline, computing machine, LCD panel, sensor, warning circuit and metering circuit, it is characterized in that: said sensor be by the steel spring pipe and on contact 2,3 series connection after be connected on the circuit of pipe joint, warning circuit also comprises by triode BG ₁, BG ₂Its output terminal of straight even amplifier of forming for core and relay join and drive the contact adhesive on the relay J and connect in oscillator, are used to produce oscillator signal and promote the loudspeaker generation, and the input end on the metering circuit passes through K switch ₃Join with circuit, its output terminal links to each other with LCD panel LD.