CN2918969Y

CN2918969Y - Conduit leakage monitoring and positioning warning system

Info

Publication number: CN2918969Y
Application number: CN 200620110767
Authority: CN
Inventors: 谢绍明
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-13
Filing date: 2006-06-13
Publication date: 2007-07-04
Anticipated expiration: 2016-06-13

Abstract

The utility model discloses an alarm system for monitoring and positioning pipeline leakage, comprising a detective sensor and an inject controller, and characterized in that the detective sensor is a pressure sensor fixed on the backup plug in tee joint at the two ends of any pipe, sensing directly the liquid pressure inside the pipe; output signal of the detective sensor is connected with the input terminal of the inject controller; the inject controller is connected with a receiving controller by radio signal. To adopt the utility model can monitor pipeline leakage, solve sudden and unexpected leakage problem, reduce the leakage loss and avoid accidents. The unattended system is particularly suitable to being applied to underground gas or liquid pipeline with certain pressure, besides, the system has simple structure and low cost and is convenient to manage and apply.

Description

The line leakage positioning alarm system

Technical field

The utility model relates to the line leakage positioning alarm system, is specifically related to a kind of device that utilizes pressure wave monitoring pipe leakage, belongs to the automatic monitoring alarm technology.

Background technique

Under ground piping in rock gas, oil, water and the various urban construction because of service time permanent burn into breakage or the caused incident of leakage of construction wrong more and more outstanding.Gently then leak and cause the wasting of resources and environmental pollution, heavy then cause and catch fire, even explode, the economic loss that causes thus is inestimable.In the prior art, usually adopt the artificial way of detection regularly the under ground piping in rock gas, oil, water and the various urban construction to be detected or safeguard, but can not solve sudden and pipe leakage Unpredictability, particularly geological environment changes, as sedimentation under the spot, or weight infringement that pipe damage is brought.One of ordinary skill in the art carry out the special project exploitation for this reason, obtain progress in various degree.As Chinese patent 99107241.3,200420096159.X disclosed " fluid-transporting tubing leakage monitoring localization method " and " liquid pressure conduit leak detection device ", the former is equipped with computer at pipeline to be measured two ends, gathers two ends flow and pressure signal and monitors; Its device can not fixedly mount, and detects complex procedures, stops the supple of gas or steam and wants matter to change, and adds that air just can detect, and can't monitor in real time, still belongs to regular checkout facility; And have complex structure, cost is higher and problems such as inconvenient management and use.The latter is arranged on the tested pipeline two ends by two and gathers the vibration transducer of the time-domain signal of leakage noise and frequency-region signal and constant-current circuit etc. and form, measure leakage signal by the vibration transducer or the calibrate AE sensor that are placed on pipe ends, because leakage point may be positioned at the pipeline diverse location, therefore leak the asynchronism(-nization) that propagation of sound arrives two sensors, utilize the correlation analysis of two column signals to determine that leakage noise arrives the time difference of two sensors; But its circuit complexity, same existence can not realize real-time problems of monitoring.

Summary of the invention

At the prior art above shortcomings, the purpose of this utility model is to provide a kind of real-time monitoring pipe leakage, utilizes pressure wave monitoring pipe leakage, solves sudden and the line leakage positioning alarm system Unpredictability leakage problem.

The purpose of this utility model is achieved in that the line leakage positioning alarm system, comprise acquisition sensor, mission controller, it is characterized in that acquisition sensor is a pressure transducer, be located on the standby plug at any pipe ends tee union place, directly experience institute's gas or fluid pressure in its pipeline; The output signal of acquisition sensor links to each other with the input end of mission controller; Mission controller is connected with the reception controller by wireless signal.

Described mission controller is connected with the urgency stop controller of three-way valve by wireless signal.

The utility model controller only need be installed dryelement cell, and is safe and reliable, cost is low.

Adopt the utility model only to need to utilize the three-way control valve at its connecting head place, connect the pressure transducer prober and get final product at the two ends of any pipeline.When pipeline take place to leak because the gas in the pipeline or liquid produces abnormal pressure wave and along pipe transmmision to the pressure transducer prober, after circuit amplifies the incoherent pressure wave of filtering, obtain pipeline leakage signal.Pressure wave signal is passed to alarm signal by transmitting set the reception controller of Central Control Room after main control circuit is handled.Simultaneously, the start-up control Emergeny Cutoff Valves cuts out the pipeline circulation and blocks leakage point automatically, reduces leakage loss and the generation of avoiding accident.According to transmission signal, but establishment officer found the spot after Central Control Room received warning, keeped in repair.Velocity of propagation depends on diameter, the material of pipeline, and the propagation time is relevant with the length in path.Thereby effectively reach real-time monitoring pipe leakage, solve sudden and the purpose Unpredictability incident of leakage.

It is on duty that the utility model need not personnel, and this device is particularly useful for having the gas of certain pressure, the under ground piping that liquid is carried.Also has advantage simple in structure, that cost is low, convenience is managed and used.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is sensor one an embodiment circuit diagram.

Fig. 3 is transmitter one an embodiment circuit diagram.

Embodiment

As shown in Figure 1, the utility model line leakage positioning alarm system, comprise pressure acquisition sensor 1, mission controller 2 and receive controller (omitting among the figure), acquisition sensor 1 is located on the standby plug at branch pipe tee connection place, directly experiences gas or fluid pressure in its pipeline.Acquisition sensor 1 and mission controller 2 are located in the shell.Mission controller 2 is connected with the urgency stop controller of three-way valve by wireless signal.

Acquisition sensor 1 can adopt existing matured product, as the piezoelectricity type crystal pressure transducer.Utilize that its response is fast, highly sensitive, good stability, compact structure, advantage that volume is little, be convenient to be installed in the pipeline.

2 is circuit of a kind of embodiment of sensor among the figure, the output terminal of acquisition sensor 1 connects the mission controller of being made up of amplification, detection, eliminator 2, mission controller 2 comprises controller circuitry, transmitter circuit, and is connected with the reception controller by wireless signal.

Fig. 3 is transmitter one embodiment.When taking place to leak as under ground pipings such as water, gas, because variation in various degree can take place in the pressure in the pipeline, influence by acquisition sensor monitoring pressure ripple makes transmitter send the alarm signal of tape code, receiving controller is located in the Central Control Room after the received signal, judge the leakage orientation or the numbering of pipeline immediately, can in time dispatch officers to speedily carry out rescue work and leak stopping.

The utility model is not limited to the concrete structure of above-mentioned mode of execution, and especially physical circuit mode, and mission controller and reception controller are not inventive points of the present utility model, can adopt the multiple circuit of prior art to realize.In a word, protection domain of the present utility model should be to comprise conspicuous to those skilled in the art conversion or alternative and remodeling.

Claims

1, line leakage positioning alarm system, comprise acquisition sensor (1), mission controller (2), it is characterized in that acquisition sensor (1) is a pressure transducer, be located on the standby plug at any pipe ends tee union place, directly experience the fluid pressure in its pipeline; The output signal of acquisition sensor (1) links to each other with the input end of mission controller (2); Mission controller (2) is connected with the reception controller by wireless signal.

2, line leakage positioning alarm system according to claim 1 is characterized in that described acquisition sensor (1) is the piezoelectricity type crystal pressure transducer.

3, line leakage positioning alarm system according to claim 1 and 2 is characterized in that described mission controller (2) is connected with the urgency stop controller of three-way valve by wireless signal.