CN2859684Y

CN2859684Y - Diaphragm type explosion-proof liquid-leakage automatic alarm

Info

Publication number: CN2859684Y
Application number: CN 200520123444
Authority: CN
Inventors: 王强; 曹爱丽
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2005-11-29
Filing date: 2005-11-29
Publication date: 2007-01-17
Anticipated expiration: 2015-11-29

Abstract

The utility model is a diaphragm type explosion-proof liquid-leakage automatic alarm comprising a box, a switch contact and an alarming circuit, which is characterized in that said box is a collecting chamber with the upper open, a detector made by expansion rubber is fixed on the bottom of the collecting chamber, a fixed contact isolation membrane hangs some distance over the top of the detector in the form of cantilever, two metal sheets are fixed in said isolation membrane in form of up-down apposition and interval, the ends of the metal sheets are the lower contact and the upper contact. After the installation of the utility model comparing to the present atr in the liquid pipe, tank, device and all kinds of machineries which need sepcial guard, once the leakage happens, the detector dipped in the liquid will expand and elongate to make the two contacts above the detector connect and turn on the electric circuit, sound the alarming signal.

Description

Isolate membrane type explosion-proof type leak of liquid autoalarm

[technical field]

The utility model relates to pipeline, tank body, equipment leakage alarm technology, particularly a kind of isolation membrane type explosion-proof type leak of liquid autoalarm.

[background technology]

Fluid-carrying lines, hold-up tank, all kinds of plant equipment, since installation and maintenance or extended active duty, the superpressure operation, material is corroded multiple reasons such as aging, and the run, drip, leak phenomenon is seen everywhere.Some lower boiling solvents, fuel leak, and are difficult to judge from the ground vestige, particularly basin exports connection places such as first valve, flanged fitting, leaks as if untimely discovery, and consequence is very dangerous, the incident that fires that some are produced, storage unit takes place, multi-source is in leakage.To leak in order finding as early as possible, to win the time of speedily carrying out rescue work, people have invented multinomial warning device.Mainly contain: change by parameters such as pressure, flow velocity, flow, temperature and judge; Judge by sound; Detect or the like with laser imaging detection or adding detection material.These methods respectively have advantage, but weak point is arranged also, for example: its device of the method that the adding detection material detects is comparatively complicated, need in petroleum pipeline, to add detected material, as bead, this will have ball adding device, ball collecting device, ball quantitative change relative analytic apparatus etc. in source end, terminal, so cost is higher; By the method for pressure detection, for a ultra-large type basin, micro-leakage appears in the discharging opening valve, and storage is irritated pressure and almost do not changed at short notice.And these methods can't use when liquid is in static state, detect methods such as bead as flow velocity, flow, adding, can only use when Flow of Goods and Materials.

[utility model content]

The purpose of this utility model is in order to overcome the deficiencies in the prior art, and provide a kind of isolation membrane type explosion-proof type leak of liquid autoalarm, this alarm can make specific warning point, no matter liquid is to be in static state or dynamic, take place as long as have to leak, can in time send alerting signal automatically.

The utility model has designed a kind of isolation membrane type explosion-proof type leak of liquid autoalarm for addressing the above problem.Comprise box body, switch contact and warning circuit, it is characterized in that said box body is a collecting chamber, the top of collecting chamber is what open wide, the detection bodies of being made by expanded rubber is being fixed in the bottom of collecting chamber, and the top of the top certain distance of detection bodies is outstanding to be had with cantilever-shaped fixing contact isolation film body; Said isolation film body internal fixation two sheet metals side by side upper and lower and separately, and the end of two sheet metals is lower contact and upper contact.

The utility model compared with prior art, after fluid pipeline, tank body, equipment, all kinds of machineries etc. need the place of special warning to install, no matter static or dynamically down, take place as long as have to leak, the detection bodies that is immersed in the liquid is expanded extends, two contacts of detection bodies top are contacted, thereby connect circuit, send alerting signal.With toluene is example, as long as there is micro-water clock to take place, in 4-40 minute, just can send alerting signal.

[description of drawings]

Fig. 1 isolates membrane type explosion-proof type leak of liquid autoalarm synoptic diagram.

Be described in detail with reference to accompanying drawing below in conjunction with embodiment of the present utility model.

[embodiment]

Isolate membrane type explosion-proof type leak of liquid autoalarm as shown in Figure 1, form by box body and switch contact etc.Its box body is a collecting chamber (3), and the top of collecting chamber is positioned at the below of monitoring valve (1) for what open wide.Collecting chamber has spout hole (7), to keep liquid level.Collecting chamber has installation bracket (4) outward.The bottom usefulness of collecting chamber fixedly compressing tablet (6) is being fixed the detection bodies of being made by expanded rubber (5), the top of the top certain distance of detection bodies is outstanding to be had with cantilever-shaped fixing contact isolation film body (10), it is fixing that contact barrier film body and function is connected the support (8) of collecting chamber bottom or sidewall, and can be transferred to suitable height.Isolate in the film body and fixing two copper sheets side by side upper and lower and separately by collets (9), the end of two sheet metals is lower contact (11) and upper contact (12).When detection bodies produces expansion under leakage is soaked, just head on lower contact and contact with upper contact, circuit A, B are communicated with, send alerting signal.The autoalarm box body can be fixed on the appropriate location by installation bracket.On the autoalarm box body, can cover rainproof silk (2) in case of necessity.

Claims

Isolate membrane type explosion-proof type leak of liquid autoalarm for 1 one kinds, comprise box body, switch contact and warning circuit, it is characterized in that said box body is a collecting chamber, the top of collecting chamber is what open wide, the detection bodies of being made by expanded rubber is being fixed in the bottom of collecting chamber, and the top of the top certain distance of detection bodies is outstanding to be had with cantilever-shaped fixing contact isolation film body; Said isolation film body internal fixation two sheet metals side by side upper and lower and separately, and the end of two sheet metals is lower contact and upper contact.
2 according to the described autoalarm of claim 1, it is characterized in that on the said collection locular wall spout hole being arranged.
3 according to the described autoalarm of claim 1, it is characterized in that said detection bodies fixes with fixing compressing tablet.
4 according to claim 1 or 2 described autoalarms, it is characterized in that said contact isolates film body and fixes by the support that is connected collecting chamber bottom or sidewall.
5 according to the described autoalarm of claim 1, it is characterized in that said collecting chamber has installation bracket outward.