CN2475999Y

CN2475999Y - Quartz glass tube liquid level gauge

Info

Publication number: CN2475999Y
Application number: CN 01201654
Authority: CN
Inventors: 胡庆云
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-01-21
Filing date: 2001-01-21
Publication date: 2002-02-06
Anticipated expiration: 2011-01-21

Abstract

The utility model relates to a quartz glass tube liquid level gauge which comprises an outer shell, an end frame, a quartz glass tube, a liquid seal ring, an end cover and nuts. The utility model is characterized in that the utility model also comprises a set of double glass vacuum tubes arranged outside the quartz glass tube, two air seal rings respectively sheathed on the double glass vacuum tubes, and two press covers respectively sheathed on both ends of the quartz glass tube, wherein the air seal rings are sealed between the double glass vacuum tubes and the end frame, and the press covers are positioned at the inner side of the liquid seal ring and supported at the outer sides of the air seal rings. The utility model utilizes the principle of double tube vacuum heat insulation to fundamentally solve the problem that the quartz glass tube is burst and frosted, and the utility model can be widely use for the liquid level measurement of various liquid storing containers.

Description

The quartz glass tube liquid level gauge

The utility model relates to a kind of quartz glass tube liquid level gauge that is installed on the container.

General quartz glass tube liquid level gauge comprises (as shown in Figure 1): one has the shell 1 of observation port, is welded with one respectively at the two ends of shell 1 and has externally threaded end frame 2.In the center pit of two ends frame 2, wear a quartz glass tube 3, two ends at quartz glass tube 3 are provided with seal stack circle 7 respectively, in the outside of two O-ring seals 7 end cap 8 is set respectively, a nut 10 has been slidingly connected respectively at the middle part of end cap 8, nut 10 is connected with the external thread of end on the frame 2 by internal thread, end cap 8 one ends withstand on the outside of O-ring seal 7, and the other end is provided with a connection piece 9, to be connected with interface of the level gauge on the container that needs measuring liquid level.

The problem that above-mentioned prior art exists is: 1, owing to have the observation port that can directly see quartz ampoule and the inside liquid level on shell, therefore quartz glass tube is exposed in the atmosphere, one to winter, and the liquid in the pipe very easily congeals into ice, and makes liquid level gauge malfunctioning.2, because the liquid in the quartz glass tube freezes expansion, very easily cause quartz ampoule to break, and then cause fluid seepage, especially at chemical field, the liquid of seepage can cause environmental pollution or other security incident.3, be above-mentioned two problems of solution, the general mode of inserting " U " type or screw type trace pipe in shell one side that adopts in the prior art, logical vapours in trace pipe still needs wasteful calorimetric steam, the consumption that strengthens the energy like this.Water does not flow if the steam trap of 4 trace pipes breaks down, and does not have companion's thermal effect, and quartz glass tube still can be damaged by frost.5, for some low-temperature materials, because environment temperature generally is higher than temperature of charge, therefore very easily frosting on quartz glass tube of atmosphere also needs to be provided with cold insulation, practice of frost protection, yet, take these measures to tend to cause the observer to can't see true liquid level.

At the problems referred to above, the purpose of this utility model provides a kind of simple in structure, saves the quartz glass tube liquid level gauge of the energy and cold insulation material.

For achieving the above object, the utility model is taked following design: a kind of quartz glass tube liquid level gauge, and it comprises: a shell has observation port on it; The two ends frame, it is separately fixed at the two ends of described shell; One quartz glass tube, it is located in the frame center pit of described two ends; Two groups of hydraulic seal circles, it is separately positioned on described quartz glass tube two ends, is sealed between described quartz glass tube and the described end frame; Two end cap, one end have a web member that is connected on the tank ga(u)ge interface, and the other end withstands on the described hydraulic seal circle outside; Two nuts, it is slidingly arranged in described end cap middle part respectively and is connected with described end frame by screw thread; It is characterized in that it also comprises: the pair of lamina glass-vacuum tube, it is set in the outside of described quartz glass tube; Two groups of air seal circles, it is separately positioned on described double-glass evacuated tube two ends, is sealed between described double-glass evacuated tube and the described end frame; Two glands, it is set in respectively on the described quartz glass tube, is positioned at described hydraulic seal circle inboard, withstands on the outside of described air seal circle.

The utility model is owing to take above design, it has the following advantages: 1, the utility model is owing to be provided with a double-glass evacuated tube in the outside of quartz glass tube, and between double-glass evacuated tube and quartz glass tube, be provided with the packoff that stops the gas heat interchange, thereby make quartz glass tube be in the vacuum insulation state, fundamentally solved quartz glass tube by the problem of bursting by freezing.2, the utility model therefore do not need steam tracing, thereby every per hour can be saved about 900 kilograms of steam, and can reduce the thermal losses of liquid level gauge effectively owing to adopt the vacuum insulation principle.3, the utility model is opened low-temperature material and atmospheric isolation owing to utilize the vacuum insulation principle, therefore can save cold insulation material, also need not take the frost prevention facility, and structure not only simply but also practicality.The utility model has solved effectively that liquid level gauge adds the antifreeze and cryogenic media frost prevention of tracing steam winter and the problem that consumes steam and cold insulation material, and it can be widely used in the level gauging of the various containers of depositing liquid.

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

Fig. 1 is a quartz glass tube liquid level gauge structural representation in the prior art

Fig. 2 is the utility model structural representation

As shown in Figure 2, the utility model comprises that one has the shell 1 of observation port, is welded with one respectively at the two ends of shell 1 and has externally threaded end frame 2.One quartz glass tube 3, its two ends are located in respectively in the center pit of two ends frame 2.Be arranged with pair of lamina glass-vacuum tube 4 in the outside of quartz glass tube 3, sheathed respectively one group of air seal circle 5 and compresses the gland 6 of air seal circle 5 at the two ends of double-glass evacuated tube 4.At the two ends of quartz glass tube 3, be arranged with one a group of hydraulic seal circle 7 and an end cap 8 respectively, an end of end cap 8 has the web member 9 of a connection tank ga(u)ge interface, and the other end withstands on hydraulic seal circle 7 outsides.The middle part of end cap 9 is provided with a nut 10 slidably, nut 10 by the internal thread on it be arranged on the external thread of end on the frame 3 and be connected, to realize axial adjustment by rotation nut 10, make two end cap 8 hold out against hydraulic seal circle 7 respectively, and hold out against gland 6 by hydraulic seal circle 7, and then hold out against air seal circle 5 by gland 6, make liquid can not enter quartz glass tube 3 space in addition, make the gas between quartz glass tube 3 and the double-glass evacuated tube 4 not carry out heat interchange with the environment beyond the double-glass evacuated tube 4.

When using, the interface of the level gauge up and down of web member 9 and liquid storage container is installed together gets final product.

The foregoing description only is a preferred embodiment of the present utility model, and the structure of prior art part and feature technology part all can change, and these variations should not got rid of outside protection domain of the present utility model.

Claims

1, a kind of quartz glass tube liquid level gauge, it comprises:

One shell has observation port on it;

The two ends frame, it is separately fixed at the two ends of described shell;

One quartz glass tube, it is located in the frame center pit of described two ends;

Two groups of hydraulic seal circles, it is separately positioned on described quartz glass tube two ends, is sealed between described quartz glass tube and the described end frame;

Two end cap, one end have a web member that is connected on the tank ga(u)ge interface, and the other end withstands on the described hydraulic seal circle outside;

Two nuts, it is slidingly arranged in described end cap middle part respectively and is connected with described end frame by screw thread;

It is characterized in that it also comprises:

The pair of lamina glass-vacuum tube, it is set in the outside of described quartz glass tube;

Two groups of air seal circles, it is separately positioned on described double-glass evacuated tube two ends, is sealed between described double-glass evacuated tube and the described end frame;

Two glands, it is set in respectively on the described quartz glass tube, is positioned at described hydraulic seal circle inboard, withstands on the outside of described air seal circle.