CN2615648Y

CN2615648Y - Black & white displaying water level meter

Info

Publication number: CN2615648Y
Application number: CN 03230471
Authority: CN
Inventors: 张立
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-18
Filing date: 2003-04-18
Publication date: 2004-05-12
Anticipated expiration: 2013-04-18

Abstract

The utility model relates to a water level display device to simplify the complex structure of the prior water level gauge. The water level display device is a water level gauge with black-white display and comprises a tank body, a photoscope and a clamp plate with an elongated water level display hole. The tank body is equipped with two collecting water tubes on the both upper and lower ends, an empty inner space and an elongated hole in one side. The clamp plate fixes the photoscope on the tank body by a screw. A plurality of light channels are equipped in the two sides of the photoscope. The utility model has the advantages that it uses photoscope, and the side contacting with water is total reflection surface, so the portion with water of the water level display device will display black and the portion without water will display white during use. The liquid-vapor surface is very clear. The product has simple structure and low cost. What's more, the water level display device can detect water level by a water level monitor, which prevents that the water level display device can't reflect the situation of the water level in boiler truly just because the photoscope doesn't work, thereby the water level display device can stop safety accidents.

Description

White and black displays type water level gauge

Technical field

The utility model relates to a kind of level displaying device, particularly a kind of water level gauge that is used for boiler or similar installation.

Background technology

Water level gauge is a kind of instrument that shows water level, and is very important to the safe operation that ensures boiler especially.But present black and white water-level meter structure more complicated, as Chinese patent 02210144 disclosed a kind of transflective white and black displays water level gauge, the xsect of water level gauge visor is trapezoidal, in the water level gauge cavity volume, be provided with the black colour table, on pressing plate, be provided with light inlet window, light source, light shield and water level viewport.This structure need be used additional light source and black colour table, complex structure, cost height.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the above-mentioned shortcoming that existing black and white water-level meter exists and a kind of simple in structure, white and black displays type water level gauge that cost is low is provided.

The utility model solves the problems of the technologies described above the technical scheme that is adopted:

A kind of white and black displays type water level gauge comprises that one holds body, interior sky, and two ends have water receiving pipe up and down, and a side has elongated hole; One photoscope; One pressing plate has microscler water level display aperture; Described pressing plate is fixed on Rong Tishang by screw with photoscope, and photoscope two sides have light transmission passage.

Described upper accepting water pipe is connected with valve by pressure cap, and the valve water inlet end links to each other with flange, and the lower accepting water pipe links to each other with valve by pressure cap, and the valve water side links to each other with flange, and downside links to each other with blowoff valve.

Described appearance body upper end also has the level switch hole, and level switch is fixed in the level switch hole that holds body.

Also has the sealing gasket sealing between described photoscope and appearance body.

Compared with prior art, advantage of the present utility model is to adopt photoscope, and the one side that contacts with water is a fully reflecting surface, and water level is black in respect of the water position and shows in use, the demonstration that is white in color of anhydrous position, and the steam interface is clearly demarcated, and product structure is simple, cost is low.Also, prevent to occur truly reflecting the situation of boiler water level owing to photoscope is inoperative by the level switch sensed water level, thus the generation of stopping security incident.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the A--A sectional view of Fig. 1.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, a kind of white and black displays type water level gauge comprises that one holds body 6, in cavity 7 is arranged, two ends have

water receiving pipe

12,15 up and down, the upper end also has three gauge holes, a side has elongated hole; It is triangle that one photoscope 3, photoscope 3 are sealed in the cross section that holds part in the body 6, and photoscope two sides have light transmission passage; One pressing plate 4 has microscler water level display aperture 2; Described pressing plate 4 is fixed on photoscope 3 by screw 1 and holds on the body 4, and sealing gasket 5 and 11 sealings are arranged between photoscope and appearance body.Sensor 8 is fixed on the gauge hole that holds body 6, upper accepting water pipe 12 is connected with valve 10 by pressure cap 9, pad 13, and valve 10 water inlet ends link to each other with flange 14, and lower accepting water pipe 15 links to each other with valve 18 by pressure cap 16, valve 18 water sides link to each other with flange 19, and downside links to each other with blowoff valve 20.

Because photoscope adopts the total reflection design, photoscope two sides have light transmission passage, and there is the not reflection of water position the lower end in the water level gauge, shows black, and top is not owing to have water so display white.

During use, by ring flange water level gauge is contained on the boiler, sensor is linked on the water level controller.

Claims

1, a kind of white and black displays type water level gauge comprises that one holds body, interior sky, and two ends have water receiving pipe up and down, and a side has elongated hole; One photoscope; One pressing plate has microscler water level display aperture; It is characterized in that: described pressing plate is fixed on Rong Tishang by screw with photoscope, and photoscope two sides have light transmission passage.

2, white and black displays type water level gauge as claimed in claim 1 is characterized in that: it is triangle that described photoscope is sealed in the cross section that holds part in the body.

3, white and black displays type water level gauge as claimed in claim 1 or 2 is characterized in that: described appearance body upper end also has the water level detecting hole, and level switch is fixed in the water level detecting hole that holds body.

4, white and black displays type water level gauge as claimed in claim 3, it is characterized in that: described upper accepting water pipe is connected with valve by pressure cap, and the valve water inlet end links to each other with flange, and the lower accepting water pipe links to each other with valve by pressure cap, the valve water side links to each other with flange, and downside links to each other with blowoff valve.

5, white and black displays type water level gauge as claimed in claim 4 is characterized in that: between described photoscope and appearance body sealing gasket is arranged.