CN203732211U

CN203732211U - Pipeline leakage detector

Info

Publication number: CN203732211U
Application number: CN201420119535.6U
Authority: CN
Inventors: 王南钧; 彭象梅; 柏伟民
Original assignee: SHANGHAI ENVAN TESTING EQUIPMENT CO Ltd
Current assignee: SHANGHAI ENVAN TESTING EQUIPMENT CO Ltd
Priority date: 2014-03-17
Filing date: 2014-03-17
Publication date: 2014-07-23
Anticipated expiration: 2024-03-17

Abstract

A pipeline leakage detector comprises a liquid trap used for being communicated with a pipeline system to be detected, a detector tube which is vertically installed below the liquid trap, a float which is positioned inside the detector tube and floats when a leaking liquid enters the detector tube through the liquid trap, a proximity switch which is positioned on the outside of the upper part of the detector tube and senses floating of the float so as to output a leakage alarm, a bypass pipe which extends out of the liquid trap and extends downward to a position below the bottom of the detector tube and has a lower end for being connected to a leaking liquid storage container, and a communicating pipe which is connected between a valve and the downside of the bypass pipe such that the leaking liquid inside the detector tube flows into the storage container through the bypass pipe so as to release the leakage alarm when the valve is opened, wherein an upper end of the detector tube is communicated with the bottom of the liquid trap and on/off of a lower end of the detector tube is controlled by the valve. According to the utility model reliable alarm signals for both tiny leakage and substantial leakage can be obtained. Meanwhile, the pipeline leakage detector has an alarm release function, and a leaking liquid can directly flow back into the storage container.

Description

Pipeline leakage detecting device

Technical field

The utility model relates to pipeline leakage detecting device, relates in particular to parts pipeline long duration test leakage detector.

Background technology

Common parts pipeline long duration test leakage detector, can not detect minute leakage simultaneously and leak with a large amount of.In the time that a large amount of leakages occur, there is the danger that causes test(ing) medium excessive.Detect sensitive not for minute leakage in addition.

Utility model content

For overcoming the above-mentioned defect of common leakage detector, the purpose of this utility model is to provide a kind of for Novel pipeline leakage detector, to realize tiny leakage and a large amount of detection and warning of leaking, and solves the danger that causes liquid spill due to a large amount of leak of liquid.

Pipeline leakage detecting device of the present utility model comprises: liquid trap, and it is for being communicated with pipe system to be detected;

Detector tube, is vertically installed on liquid trap below, and its upper end is communicated with liquid trap bottom, and lower end is opened and closed by valve control; Float, is positioned at detector tube inside, and it is having leakage liquid to float in the time that liquid trap enters detector tube;

Approach switch, is positioned at detector tube upper outside, and it is responded to the floating of float and exports leakage alarms; By-pass pipe, extends and extends to the position lower than detector tube bottom down from liquid trap, and its lower end is for being connected to the container of storing up of leakage liquid; And communicating pipe, be connected between described valve and the following side of by-pass pipe, so that in the time opening described valve, the leakage liquid in detector tube is stored up container described in by-pass pipe inflow, thereby removes described leakage alarms.

The advantage of leakage detector of the present utility model is, it realizes minute leakage can obtain reliable alerting signal with a large amount of leakages, has alarm release function simultaneously; And can make leaking medium directly get back in liquid storage container.

Brief description of the drawings

Can more clearly understand by reference to the accompanying drawings the technique effect of concrete structure of the present utility model and generation to understand fully the utility model.

Fig. 1 is the schematic diagram of the pipeline leakage detecting device of the utility model one embodiment.

Embodiment

Below in conjunction with accompanying drawing, pipeline leakage detecting device is elaborated.

Pipeline test leakage detector schematic diagram of the present utility model shown in Figure 1, described leakage detector mainly comprises: upper flange 1; Liquid trap 2; Upper pressing cap 3; Device support 4; Approach switch 5; Glass tube 6; Hollow metal float 7; O-ring seal 8; Bottom tray 9; Liquid back pipe 10; Solenoid valve 11; Communicating pipe 12; Lower flange 13; And by-pass pipe 14.

As shown in Figure 1, liquid trap 2 upper ends are welded with the upper flange 1 for being connected to pipe system (not shown) to be detected.Welding the upper pressing cap 3 with the center tubule of connection liquid trap 2 in the lower end of liquid trap 2.The lower inside of upper pressing cap 3 is provided with seal groove, and O-ring seal 8 is installed in it, for by right angle setting in the glass tube 6 of downside (with the mode of the upper end lateral wall sealing of glass tube 6) be fixed on the bottom of upper pressing cap 3.Glass tube 6 inside are provided with hollow metal float 7.Glass tube 6 lateral wall places are provided with the approach switch 5 being arranged on device support 4.Glass tube 6 belows are supported hermetically by the bottom tray 9 with O-ring seal 8.In bottom tray 9, be provided with the liquid back pipe 10 that is communicated with and laterally extends through bottom tray 9 sides with glass tube 6 downsides.

Liquid trap 2 sidepieces are welded with by-pass pipe 14.By-pass pipe 14 is from liquid trap horizontal expansion as shown in the figure, then spends curved bypass 14 towards 90 of downward-extension.

Be connected to the following side of by-pass pipe 14 through solenoid valve 11, communicating pipe 12 from the extended liquid back pipe 10 of bottom tray 9.The lower end of by-pass pipe 14 is with lower flange 13, for being connected to the liquid reserve tank (not shown) of storing up leakage fluid.

Set forth leakage detector principle of work of the present utility model below.

Leakage detector by using, lower flange 1 and 13 is connected to system to be detected and leakage receptacle, in the time having small leak liquid to bleed in leakage detector from 1 mouthful of upper flange, leakage liquid is the tubule in upper pressing cap 3 by liquid trap 2, enter in glass tube 6 annular seal spaces that sealed by solenoid valve 11 lower end, make hollow metal float 7 increase by the buoyancy of leakage fluid, approach switch 5 is responded to the above-mentioned output leakage alarm signal of float.

In the time having a large amount of leak of liquid, leakage liquid major part is directly got back to liquid reserve tank by the curved by-pass pipe 14 of 90 degree, and a small amount of leakage liquid enters in the glass tube 6 of leakage detector simultaneously, realizes warning function.

Leaking medium is flow in by-pass pipe 14 finally get back in the liquid reserve tank that is connected to lower flange 13 belows, can realize alarm release function by opening solenoid valve 11.

Claims

1. a pipeline leakage detecting device, is characterized in that, comprising:

Liquid trap, it is for being communicated with pipe system to be detected;

Detector tube, is vertically installed on liquid trap below, and its upper end is communicated with liquid trap bottom, and lower end is opened and closed by valve control;

Float, is positioned at detector tube inside, and it is having leakage liquid to float in the time that liquid trap enters detector tube;

Approach switch, is positioned at detector tube upper outside, and it is responded to the floating of float and exports leakage alarms;

By-pass pipe, extends and extends to the position lower than detector tube bottom down from liquid trap, and its lower end is for being connected to the container of storing up of leakage liquid; And

Communicating pipe, is connected between described valve and the following side of by-pass pipe, so that in the time opening described valve, the leakage liquid in detector tube is stored up container described in by-pass pipe inflow, thereby removes described leakage alarms.

2. pipeline leakage detecting device as claimed in claim 1, is characterized in that,

Liquid trap is connected to pipe system to be detected through being positioned at the flange at its top; And

By-pass pipe extends from liquid trap sidepiece, its lower end with flange with described in store up container and be connected so that in the time having a large amount of leak of liquid, the leakage liquid that enters liquid trap from by-pass pipe overflow to described in store up container.