CN2225020Y

CN2225020Y - Photoelectric remote transferring glass tube level-meter

Info

Publication number: CN2225020Y
Application number: CN 94248466
Authority: CN
Inventors: 张跃
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-13
Filing date: 1994-12-27
Publication date: 1996-04-17
Anticipated expiration: 2004-12-27

Abstract

The utility model provides a photoelectric remote transferring glass tube level-meter which relates to a display and control unit of liquid level monitoring used for boilers and pressure liquid tanks. The utility model is characterized in that the design of half circular arc in the glass gas-liquid tube in the level meter, reasonable angle shielding of single oriented red and green light, and offset observation window is utilized to achieve displaying effects of red gas and green liquid. A specific gravity ball is arranged in the glass tube, which can display two liquids and tristimulus designation of limiting surface. Through a sensing unit which is additionally arranged outside the glass tube, the utility model can monitor liquid level in the container in remote distance so as to enlarge the range of function of the existing level meter.

Description

Photoelectricity teletransmission glass-tube liquid level meter

Photoelectricity teletransmission glass-tube liquid level meter relates to the level monitoring display and control unit that a kind of boiler and pressure liquid are irritated.

It utilizes law of connected vessels, and angle with rational block and be offset in the middle of the gas-liquid glass tube advance light and observation angle, utilize the half of garden arc of gas-liquid glass tube can produce the optical principle of transmission and refraction by identical with the different dielectric interface of refractive index, distinguish gas, liquid interface location between the two by red green two kinds of colors with light.On this basis, utilizing buoyancy and difference in specific gravity is the proportion and the buoyancy phenomenon inequality of two media, storing is painted in the gas-liquid glass tube distinguishes two kinds of mixed media than heavy ball (or post), and to solve the unclear difficult problem of interface explanation, three looks that reach gas, boundary, liquid level show.Because existing glass tube double colored indicator can only measure demonstration at the scene, can not teletransmission, as install photoelectric sensor or Fibre Optical Sensor additional, can solve the ubiquitous above-mentioned shortcoming of glass-tube liquid level meter.

The purpose of this utility model is existing double colored indicator is improved, and provides a kind of and can measure one or both medium liquid levels, interfacial level in the tested container, and can realize the multi-functional liquid level meter of telemeasurement.

Its concrete technical scheme accompanying drawings is as follows: Fig. 1 is the viewgraph of cross-section of the photoelectricity teletransmission glass-tube liquid level meter that provides of the utility model, and Fig. 2 is A-A cut-open view of Fig. 1.1 is the green transparent sheet among the figure, and 2 is red slide, and 3 is the gas-liquid glass tube, and 4 is sensor, and 5,6 are respectively two positive and negative electrodes of drawing on the sensor 4, and 7 is view window.8 is shadow shield, and 9 is than heavy ball (post), and 10 are the table body.Photoelectricity teletransmission glass-tube liquid level meter is by gauge outfit, filler chamber, table body, view window, compositions such as gas-liquid glass tube.Glass tube 3 places the middle part in the table body, have the light inlet window of skew and be equipped with green on the table body rear wall, red colored transparent sheet 1,2, the antetheca of table body is provided with view window 7, its special character is green, red colored transparent sheet 1,2 layout of taking back or take over, view window 7 take back thereupon or take over and with red colored transparent sheet 2 corresponding layouts, correspondence is equipped with sensor 4 on the outer wall of glass tube 3, in glass tube 3, be equipped with than heavy ball (post) 9, its color is red green color or other color that obvious difference is arranged, and in the both sides, interior collar extension place of view window 7 shadow shield 8 is housed.

Infrared sensor (or Fibre Optical Sensor) on glass tube 3 outer walls can one or more correspondences be arranged outside glass tube.

Shadow shield 8 is contained in the inside and outside both sides of view window 7, and with the straight plate that is parallel to each other, and vertical with view window.

The elongated surfaces of the left side shadow shield of shadow shield 8 and the center line of glass tube 3 intersect or slightly take back, the elongated surfaces of right side shadow shield meet at the tangent tangent line of the outer rim bus of glass tube 3 within.Such scheme is brought into play perfect a kind of multifunctional glass pipe liquid level gauge on application number is the basis of 942151801 glass tube double colored indicators, it has simpler double-colored or three look display structures, owing to installed sensor additional, can realize the infrared or optical fiber detection teletransmission control of non-contact type.It is chosen the liquid in the tested container than heavy ball and easily sneaks between the proportion of liquid and is worth, it can be floated on a kind of liquid surface, and employing can obviously be different from other color outside red and green two kinds of colors, so form the liquid level gauge that three looks show, thereby solved general liquid level gauge unclear difficult problem of its interface explanation when measuring two kinds of mixed platform liquid.

Accompanying drawing is one of technique scheme embodiment.Glass tube in the table body is contained in the middle part, green, red slide take back side or right side, be arranged on the housing rear wall light inlet window, the green transparent sheet is greater than red slide, and view window is opened and taken in the front portion of table body or take back side, and it is corresponding with red slide, vertically arranged shadow shield is equipped with in both sides, interior collar extension place at view window, is equipped with infrared or Fibre Optical Sensor on the outer wall of glass tube, draws lead and can connect the pulpit.Also can not add sensor and be directly used in the double-colored demonstration monitoring of on-the-spot liquid level.As charge of oil in the tested container, than the proportion of heavy ball (can adopt column type) optional greater than oil less than water, after water is sneaked into, will float on the surface than heavy ball, sneak into, not float than heavy ball as anhydrous, can adopt yellow than heavy ball, this moment, gas showed redness, and liquid shows green.This liquid level gauge can be observed at the scene also can be at the control indoor monitoring.

Claims

1. photoelectricity teletransmission glass-tube liquid level meter is by gauge outfit, the table body, filler chamber, compositions such as glass tube, glass tube (3) places the middle part in the table body, have the skew light inlet window and be equipped with green on the table body rear wall, red colored transparent sheet (1,2), the antetheca of table body is provided with view window (7), it is characterized in that green, red colored transparent sheet (1,2) layout of taking back or take over, view window 7 is taken back and is taken over and corresponding layout with red slide, the sensor (4) of symmetric offset spread is housed on the outer wall of glass tube (3), in glass tube (3), be equipped with than heavy ball (cylinder) (9), its color is other color that obvious difference is arranged with red green color, in the both sides, interior collar extension place of view window (7) shadow shield (8) is housed.

2. photoelectricity teletransmission glass-tube liquid level meter according to claim 1 is characterized in that said shadow shield (8) is contained in the both sides, interior collar extension place of view window (7), and adopts the straight plate that is parallel to each other, and vertical with view window.

3. photoelectricity teletransmission glass-tube liquid level meter according to claim 1 and 2, the center line that it is characterized in that the elongated surfaces of left side shadow shield of said shadow shield (8) and glass tube (3) intersects or slightly takes back, the elongated surfaces of right side shadow shield meet at the tangent tangent line of the outer rim bus of glass tube (3) within.