CN2053748U - Full visual angle bichromatic liquid level gage - Google Patents

Abstract

The utility model discloses a full visual angle bicolor liquid level gage, which is a device for displaying the liquid level of a boiler. Red baking varnish and green baking varnish are coated on a glass pipe; a steel pipe is sheathed on the outside of the glass pipe; holes are arranged at the both sides of the steel pipe; the light passes through the glass pipe through the holes, passes through narrow holes at the other side, lights a lens device, and passes through a glass plate coated with white varnish. The red and green liquid levels are formed, the red liquid level signifies the position of steam, and the green liquid level signifies the position of water. The utility model can observe the water level in full visual angle range, having the advantages of simple structure, accuracy, reliability, and easy maintenance.

Description

Full visual angle bichromatic liquid level gage

The utility model belongs to the device that shows liquid level change, is applicable to that particularly the liquid level on the boiler shows.

The reflection, the transmission-type dibit liquid level gauge that in field of boilers, use at present, in use also exist some defectives, because the inwall curved transition of level gauge glass pipe is excessive, use after a period of time, the easy incrustation of tube wall is easy-clear not, and influence observation precision, owing to the reason on the structural principle, angular field of view is less, and the observer can only or can clearly observe liquid level in direct-view in about 10 ° angular field of view.

The purpose of this utility model is that a kind of novel dibit liquid level gauge will be provided, and can overcome the deficiency of existing liquid level gauge basically, both has been difficult for incrustation, can realize the observation in the full angular field of view again, there is not the unclear defective of liquid level interphase boundary yet, and simple in structure, and installation and maintenance are all very convenient.

The purpose of this utility model realizes in this wise: adorn a steel pipe in the square casing, suit one scribbles the glass tube of red and green baking vanish or plastic sheeting in steel pipe, the steel pipe both sides have the hole, make the light source transmission after glass tube, pass through the outer lens transmission of (in the housing) steel pipe again, just the green line of the red line of expression gaseous state and expression water level all is projeced into and is coated with on the adularescent baking vanish glass plate, the observer can observe correct level condition in the scope at full visual angle from glass plate.

The synoptic diagram of Fig. 1, liquid level gauge structure

The A-A cut-open view of Fig. 2, hydraulic ga(u)ge

Wherein: the main part that comprises is:---

1, green baking vanish 2, light source 3, red baking vanish 4, fixing steel pipe

5, glass tube 6, cylindrical lens 7, lens mount 8, screen frame 9, white baking vanish 10, glass plate (screen) 11, housing 12, top connecting pipe 13, trip bolt 14, last end cover 15, carbon seal ring 16, upper body 17, lower body 18, bottom carbon seal ring 19, trip bolt 20, bottom end-blocking lid 21, bottom connecting pipe 22, narrow hole 23---the slot of steel pipe

Now in conjunction with the accompanying drawings the structure of liquid level gauge is further narrated

As can be seen from Figure 1, lens (6) are housed in housing (11) and gage glass (5) waits other part, housing (11) is a square metal shell, and a side of glass tube (5) scribbles green baking vanish (1) and red baking vanish (3); Be with fixedly steel pipe (4) around the glass tube (5), a side of steel pipe (4) has slot (23), and light source (2) is just in the close place of slot; Make light can direct irradiation scribble the glass tube (5) of red green baking vanish by this slot, the other end of steel pipe, on the just former position that is bordering on partially with the slot opposite, have a rectangular narrow hole (22), outside steel pipe has the pipe of position, narrow hole (22), lens mount (7) is housed, a cylindrical lens of setting-in (6) in the frame, and in housing (11) front, screen frame (8) also is equipped with in center-right position, light that the glass plate (10) that is coated with white baking vanish (9) makes light source is housed in the frame to be shone by steel pipe slot (23) scribble red and baking vanish layer (1 green on glass tube, 3), light shines in cylindrical lens (6) from the narrow hole (22) of steel pipe (4) again, the white baking vanish layer (9) of transmission on glass plate (10) again, its main points are to be the red and green baking vanish layer (1 of light source irradiation, 3), because the dissemination of light forms the red green two color bunch, vapor portion in pipe, ruddiness is transmitted to lens (6) through glass tube (5), but green glow can not be transmitted to lens (6), otherwise, in glass tube, there is the part green glow of water can be transmitted to lens, ruddiness can not see through and arrival lens (6), so locate to form the red light green phenomenon of gas of small angle at lens (6), this image images on the white baking vanish (9) through lens (6), has further realized the observation at full visual angle.

Can see by Fig. 2, steel pipe (4) be sleeved on glass tube (5) around, last connecting pipe (12) is welded in end cover (14), end cap (14) is fixed in above the upper body (16) with trip bolt (13), carbon seal ring (15) is loaded between upper body (16) and the steel pipe (4), end cap (14) end face has an edge just in time to press in O-ring seal, same bottom connecting pipe (21) also is welded in above the end cover (20), this end cap (20) is fixed in above the lower body (17) with trip bolt (19), and carbon seal ring (18) equally also is contained between lower body (17) and the steel pipe (4); The end cap end face also have flange just in time press in O-ring seal (18), steel pipe (4) and up and down connecting pipe (12,21) all be mounted on the same axial line, this up and down connecting pipe (12,21) all with on be connected (I do not draw on figure) of rolling off the production line, on the flange that rolled off the production line be connected with the boiler flange, form a loop each other.(about on roll off the production line and being connected of flange, all expressions belong to known technology on figure)

In addition, screen frame (8) is to be welded on above the housing (11), all is fixed on above the bottom of lower body (17) as for parts such as light source (2) device and lens mounts, and glass tube also may be to be coated with layer of plastic film except being coated with baking vanish.

The utility model is compared with the dibit meter that has now and is had following advantage, and tube wall is difficult for incrustation, namely uses incrustation of a specified duration also to be easy to remove, and the observer can directly observe liquid level in full angular field of view, observe the precision height, and is safe and reliable, manufacturing and easy to repair.

Claims (2)

1, a kind of full visual angle dibit liquid level gauge, form by glass tube, steel pipe, lens, glass plate and housing etc., it is characterized in that housing (11) is a square metal housing, the glass tube (5) that scribbles green baking vanish (1) and red baking vanish (3) is housed in it, the outer fixedly steel pipe (4) that is with of pipe, one side of steel pipe (4) has slot (23), and opposite side has narrow hole (22); Near locating in narrow hole (22) lens mount (7) is housed, setting-in cylindrical lens (8) in the frame, and screen frame (8) is housed in the positive center-right position of housing (11), the glass plate (10) that is coated with white baking vanish (9) is housed in the frame.

2, dibit liquid level gauge according to claim 1, it is characterized in that top and the bottom connecting pipe (12,21) is welded on above the end cover (14,20), end cap (14,20) is fixed on above the top and the bottom body (16,17) with trip bolt (13,19), and carbon seal ring (15,18) is housed between upper and lower part body (16,17) and steel pipe (4).

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