CN2089164U

CN2089164U - Pressure type liquid level indicator

Info

Publication number: CN2089164U
Application number: CN 90217156
Authority: CN
Inventors: 戴加洪
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-07-28
Filing date: 1990-07-28
Publication date: 1991-11-20

Abstract

The utility model discloses a pressure type liquid level indicator designed according to pressure formula P=hd for indicating liquid level or directly indicating quantity. The pressure type liquid level indicator is composed of an outer shell, a metal diaphragm, an ejector rod, two bevel gears, a pointer, a surface, etc. The utility model can directly indicate the liquid level in a storage pot in a visual and convenient way, or the utility model can conveniently and accurately calculate the storage capacity of liquid in the pot according to known surface area S of the storage pot.

Description

Pressure type liquid level indicator

Use on the large-scale hold-up vessel of Hazardous Chemical Substancess such as the utility model relates generally to the storage of the liquid of various free states, and is particularly inflammable, explosive, can accurately indicate the liquid level gauge of storage capacity.

The large warehoused hold-up vessel of units such as petroleum industry and commerce or chemical industry is comparatively coarse to the calculating of storage capacity, it mainly is the amount that the amount of charging deducts discharging, and the tank farm stock that draws, but the error for charging and discharging then can't reflect more exactly, so it is the inventories of these units are theoretic, not too accurate.At petroleum system, some unit is to utilize a hollow copper ball to the observation of liquid level but at present,, extend to the oil tank outside with wire rope by pulley, the other end joins an arrow, draws scale and represent liquid level outside oil tank, such method is more original, and accuracy is relatively poor, in addition, utilize ball float, arrow is to move in the other direction with liquid level, observe also inconvenient, moreover, must have an aperture to communicate at the top of oil tank with atmosphere, this also the oil supply library tape come unsafe factor.

Fundamental purpose of the present utility model is to provide a kind of totally enclosed, is physical construction fully, can indicate the liquid level gauge of liquid level exactly.

The utility model is the pressure formula P=hd according to liquid, and (h is the height of liquid; D is the proportion of liquid), and a kind of instrument that can indicate liquid level of design.

The utility model can be installed on the drain valve of hold-up vessel bottom and can use, thus be very easily by dress, and to not influence of hold-up vessel, need not do especially by dress.

Be described further below in conjunction with accompanying drawing.

Accompanying drawing is a structure principle chart of the present utility model.

This instrument comprises shell 1, and surface 2 is housed in the enclosure, and pointer 3 has a little bevel type gear in the pointer lower end, and 4 is the gamp tooth of flat edge marginal zone one boss, and this is protruding Platform links to each other with push rod 7, and 5 are the virtuous nut of lock, and for arranging by dress, spring 6 usefulness are so that push rod 7 resets, and 8 is the oil resistant rubber seal, and 9 is clamp nut, and metallic membrane 10 and sealing ring are compressed, and reaches sealing effectiveness. Principle of the present utility model, utilize pressure formula: P=hd, the scale on surface is the height of liquid level, unit can be rice (M), decimetre (cm) etc., scale calculates according to formula h=p/d. Accompanying drawing upward arrow institute finger tip contacts with liquid, the pressure of liquid is along arrow, directive effect is on metallic membrane 10, make its distortion, 7 beginnings of one push rod are arranged along direction of arrow action in metallic membrane, the other end of push rod 7 links to each other with a boss of gamp tooth 4 horizontal edges, drives small bevel gear 3 so umbrella tooth 4 rotates and rotates, because small bevel gear 3 and pointer are integrated, so pointer also moves to a position surperficial 2 with regard to corresponding, this position is the pressure of liquid, according to pressure formula p=hd distortion, h=p/d, wherein d is different liquids proportion, the substitution formula is namely known to represent the height of liquid stored in this holding vessel with scale. In addition, this utility model also can directly represent quantity with scale, obtains S=(a/2 according to the known diameter a of this holding vessel)²π is multiplied by height h again, is multiplied by the weight that proportion d can protect out liquid. The perhaps surface on this liquid level gauge; According to the known area S of user's holding vessel, the weight that directly marks solution is then more directly perceived.

The utility model embodiment; Shell 1 is ZG15, and umbrella tooth 3,4 can be the polyamide moulding by casting, and set nut 5 and gland nut 9 are A3, and push rod 7 is 45 ^#, HRC35～40, back-moving spring 6 is 65mn, tempered processing O-ring seal 8 is an oil resistant rubber; Having relatively high expectations of metallic membrane 10 is with 4Cr13HRC48～53.The thickness 8 that calculates metallic membrane 10 according to different purposes gets final product.

Claims

1, a kind of pressure type liquid level gauge, this instrument has pointer 3, surperficial 2 compositions such as grade, and liquid level is represented with scale in the surface, the rear end that it is characterized in that shell has a metallic membrane 10 directly to contact with liquid, experience the variation of its pressure, in have push rod 7 to contact with it, back-moving spring 6 is arranged on push rod, the other end of its push rod 7 is connected on the gamp tooth 4 of boss, one pointer is arranged on umbrella tooth 3, cooperate, be used to indicate liquid level with surface 2.

2, liquid level gauge according to claim 1 is characterized in that boring a corresponding hole at the blind plate of the blowoff valve of hold-up vessel bottom, this instrument is inserted the back directly get final product with nut 5 lockings.

3, liquid level gauge according to claim 1, the action that it is characterized in that this instrument is to utilize pressure formula P=hd to be deformed into that P is pressure in the h=P/d(formula, h is the height of liquid, d is the proportion of liquid) principle designed, so the scale of surface on 2 can directly indicate the height of pairing liquid.