CN2317469Y

CN2317469Y - Double colour liquid level gauge with prism tube

Info

Publication number: CN2317469Y
Application number: CN 97244688
Authority: CN
Inventors: 范宇航; 徐绍鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-30
Filing date: 1997-10-30
Publication date: 1999-05-05
Anticipated expiration: 2007-10-30

Abstract

The utility model relates to a double-color liquid level gauge with a prism tube for displaying a liquid level. The utility model is characterized in that a hyaline tube is a prism tube of which the tube wall is provided with a prism; a gas phase filter plate is installed on the light incidence plane of the outer wall of the prism tube; a liquid phase filter plate is installed on the tube wall corresponding to the observation plane of the reflecting incidence plane of the prism; a metal shell with four strip-shaped holes is arranged outside the prism tube; sealing frame shims are arranged on the peripheries of the strip-shaped holes; columnar fluorescent lamps are arranged in the sealing frame shims with filter plates, and a dust-proofing glass plate and a liquid level scale faceplate are respectively embedded in the rest two sealing frame shims. The utility model has the characteristics of reasonable structure, small volume, light weight, clear liquid level, fast color, low cost, wide application ranges, etc.

Description

Prism pipe double colored indicator

The utility model belongs to liquid level indication technical field, specifically a kind of prism pipe double colored indicator that shows liquid level in the container.

Liquid level gauge is industry and one of civilian middle effective tool of using the widest model.The double colored indicator that liquid level gauge mainly contains glass-tube liquid level meter, glass plate type liquid level gauge and occurs recently.Double colored indicator is that gas phase and liquid phase are divided into two kinds of colors, makes the interface clear clearly demarcated, has been subjected to users' welcome.Particularly the transflective two-colour fluviograph that generally adopts of steam boiler is existing to have replaced glass tube and glass plate type water level gauge gradually.Though more preceding two of double colored indicator has bigger superiority, have also that sealing, colour table fade, a series of problems such as foundry goods heaviness, observation size are little, cost height.

The purpose of this utility model provides the prism pipe double colored indicator that a kind of liquid level tube and prism are structure as a whole.

The purpose of this utility model is achieved in that it includes housing, the container connecting leg, panel, transparent tube, observation window, fluorescent light, filter, it is characterized in that: transparent tube is for having the prism pipe of a prism at least on its tube wall, the light plane of incidence of prism pipe outer wall is provided with the filter that can show the gas phase color, be provided with the liquid phase filter that one deck can show the liquid phase color with outer wall behind the corresponding pipe of the plane of vision of prismatic reflection incident light, be outside equipped with metal circular tube at the prism pipe with four symmetrical bar holes, each face center of this prism pipe is corresponding with the bar hole center respectively, the bar hole periphery is provided with window formula sealing frame pad, be equipped with a cylindricality fluorescent light respectively in the sealing frame pad inboard that has liquid phase filter and gas phase filter, be embedded with dust-proof glass plate respectively on two other sealing frame pad, the glass plate arranged outside has the panel of liquid level scale.Above-mentioned prism pipe is the tubular body of square prism pipe or band prism.

The utility model has been broken the traditional concept of making prism, proposed the new technology that direct employing prism pipe is made double colored indicator, thereby solved the long-standing sealing of transmission bicolor liquid level indicator effectively, fade, a series of problems such as the observation port chi is too small, the heavy cost height of foundry goods.The utlity model has rational in infrastructure, volume is little, in light weight, good sealing effect, liquid level clear display, never fade, characteristics such as cost is low, applied range.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the utility model gas phase light path fundamental diagram

Fig. 2 is the utility model liquid phase light path fundamental diagram

Fig. 3 is that structural representation cuts open in office of the present utility model

Fig. 4 is the xsect enlarged diagram of Fig. 3

Shown in Fig. 1-4, among the figure 13 is for having the square transparent prism pipe of a prism on the tube wall, on the light plane of incidence 1 of prism pipe 13 outer walls, amplexiform the filter 11 that one deck can show the gas phase color, and amplexiform the liquid phase filter 9 that one deck can show the liquid phase color on the outer wall 5 behind the plane of vision 3 corresponding pipes of prismatic reflection incident light.Whole prism pipe is installed in the metal circular tube 14 of the bar hole 20 that has four symmetries, makes each face center of prism pipe corresponding with the bar hole center respectively.The rectangle window formula sealing frame pad 18 that insulation, thermal insulation material are made is installed on the bar hole periphery, cylindricality

fluorescent light

8 and 12 by the Low-voltage Electronic ballast driven is installed in having the sealing frame pad of liquid phase filter and gas phase filter, be embedded with dust-proof glass plate 17 respectively on all the other two the sealing frame pads, the glass plate outside also is equipped with the panel 15 of band liquid level indicating graduation.16 and 19 is respectively the observation window and the liquid level direct-vision panel mouth of this liquid level gauge among the figure.22 and 23 liquid connecting leg and the gas connecting legs that are respectively this liquid level gauge in the screw thread by hollow pressure cap screw 21 precession metal circular tubes 14 two ends, compress sealing with the sealing gasket 25 between connecting leg end face and the prism pipe end face among the figure.Be equipped with between hollow pressure cap screw and each connecting leg with insulation, the collar packing ring 24 made of thermal insulation material, purpose is device maintenance thermal insulation and the electric insulation that makes parts and tested liquid level on the metal circular tube, to improve the reliability of this liquid level gauge.

Its principle of work is: as can be seen from Figure 1, light by light source 12 emissions enters in the prism 2 by the gas phase filter 11 on the light plane of incidence 1, because the total reflection effect of prism, incident light reflexes to double-colored liquid level plane of vision 3 through the incident light plane of reflection 7 again, can see the gas phase color from plane of vision 3, its color is identical with gas phase filter 11.As can be seen from Figure 2, passing prism tube wall 5 by the light of light source 8 emission by the liquid phase filter 9 on the light-transmissive surface 10 enters in the tube chamber 6, owing to the existence of liquid in the tube chamber has destroyed the plane of reflection 7 of prism, make the prism pipe become can transmitted light object.Therefore, on plane of vision 3, just transmit liquid phase color with liquid phase filter 9 same colors.By above-mentioned optical path analysis as can be known: because inspection surface 4 does not belong to any one plane of prism, there is not reflection effect, therefore, can see through prism tube wall 5 and directly observe liquid in the tube wall, its liquid and gas color and liquid level plane of vision 3 is fully opposite, and is a liquid level rather than the once double-colored liquid level of standard of passing through conversion on plane of vision 3 what show on the inspection surface 4.

Claims

1, a kind of prism pipe double colored indicator that shows liquid level in the container that is applicable to, it includes housing, the container connecting leg, panel, transparent tube, observation window, fluorescent light, filter, it is characterized in that: transparent tube is for having the prism pipe of a prism at least on its tube wall, the light plane of incidence of prism pipe outer wall is provided with the filter that can show the gas phase color, be provided with the liquid phase filter that one deck can show the liquid phase color with outer wall behind the corresponding pipe of the plane of vision of prismatic reflection incident light, be outside equipped with metal circular tube at the prism pipe with four symmetrical bar holes, each face center of this prism pipe is corresponding with the bar hole center respectively, the bar hole periphery is provided with window formula sealing frame pad, be equipped with a cylindricality fluorescent light respectively in the sealing frame pad inboard that has liquid phase filter and gas phase filter, be embedded with dust-proof glass plate respectively on two other sealing frame pad, the glass plate arranged outside has the panel of liquid level scale.

2, prism pipe double colored indicator according to claim 1 is characterized in that the prism pipe is glass prism pipe or transparent plastic prism pipe.

3, prism pipe double colored indicator according to claim 1 and 2 is characterized in that the prism pipe is the tubular body of square prism pipe or band prism.