CN214502602U

CN214502602U - Liquid level meter

Info

Publication number: CN214502602U
Application number: CN202023022403.6U
Authority: CN
Inventors: 许文良; 范相裕; 潘存华; 张剑; 王远鑫
Original assignee: Datang Boiler Pressure Vessel Examination Center Co Ltd; East China Electric Power Test Institute of China Datang Corp Science and Technology Research Institute Co Ltd
Current assignee: Datang Boiler Pressure Vessel Examination Center Co Ltd; East China Electric Power Test Institute of China Datang Corp Science and Technology Research Institute Co Ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-10-26
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a liquid level meter, including differential pressure sensing device, balanced container cell, lower connecting pipe, last connecting pipe, balanced container pipe and condensation reflux unit, differential pressure sensing device's one end is through connecting pipe and water storage tank bottom intercommunication down, balanced container cell lateral part is through last connecting pipe and water storage tank top intercommunication, differential pressure sensing device's the other end is little through balanced container pipe and balanced container. The utility model has the advantages of, through condensing reflux unit's setting for the liquid of the evaporation of being heated in the balance container cell condenses and flows back to the balance container cell again under the effect of gravity through condensing reflux unit, and then makes the interior liquid level that remains throughout of balance container cell in the maximum value, has guaranteed that this level gauge can the accurate measurement in the water storage tank.

Description

Liquid level meter

Technical Field

The utility model relates to a liquid level monitoring technology field specifically is a level gauge.

Background

A liquid level meter of a water storage tank of a steam-water separator of a supercritical once-through boiler is an important device for monitoring the water level of the steam-water separator, and the principle of the liquid level meter is that the liquid level is reflected by utilizing the pressure difference generated by the height difference of liquid media at two sides. Its working process is that fill water in the water storage tank before the level gauge is put into operation, also be full of water in making the level gauge, the level gauge is in same height and be the maximum value with the water storage tank liquid level this moment, and the level gauge can come into operation this moment, changes along with the liquid level of water storage tank, and the water level keeps the maximum value in the level gauge, and the pressure differential signal of both productions can reflect the liquid level in the water storage tank.

In the operation process, the water storage tank constantly produces the highly compressed steam of high temperature, few partial high temperature steam can get into the working medium among the level gauge by the connecting line heating, simultaneously because the level gauge is attached to the water storage tank, the rising of water storage tank temperature also can play the heating effect to the level gauge, make working medium wherein constantly by the heating evaporation, the liquid level that leads to in the level gauge can't keep the maximum value, can lead to liquid evaporation to dryness in the level gauge even under the worst condition, lead to the liquid level in the unable accurate measurement water storage tank of differential pressure formula level gauge.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that solve lies in how to guarantee that the liquid level in the level gauge keeps the maximum value and improves measurement accuracy.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a liquid level meter, includes differential pressure sensing device, balanced container cell, lower connecting pipe, goes up connecting pipe, balanced container pipe and condensation reflux unit, differential pressure sensing device's one end is through connecting pipe and water storage tank bottom intercommunication down, balanced container cell lateral part is through last connecting pipe and water storage tank top intercommunication, differential pressure sensing device's the other end is through balanced container pipe and balanced container cell bottom intercommunication, balanced container cell's top is provided with condensation reflux unit.

Through the setting of condensation reflux unit for the liquid of the evaporation of being heated in the balance container cell carries out the condensation through condensation reflux unit and flows back to the balance container cell again under the effect of gravity in, and then makes the keeping throughout in the balance container cell at the maximum value, has guaranteed the liquid level that this level gauge can the accurate measurement water storage tank in.

Preferably, the condensation reflux device comprises a condensation tank, condensate and a condensation pipe, wherein the condensate and the condensation pipe are arranged in the condensation tank, and the bottom of the condensation pipe is communicated with the top of the small chamber of the equilibrium container.

The liquid of the evaporation of being heated in the balance container cell becomes in the steam inflow condenser pipe, condenses the steam in the condenser pipe through the condensate and forms the condensate, and the condensate flows back to the balance container cell again under the effect of gravity in, and then makes the liquid level that can the precision measurement water storage tank in the balance container cell remain at the maximum value all the time, has guaranteed this level gauge.

Preferably, the top of the condensation pipe is also provided with a steam delivery pipe communicated with the top of the water storage tank; make steam when water evaporation in the water storage tank get into the condensation in the condenser pipe to flow to in the balancing container cell, further make keeping all the time in the balancing container cell at the maximum value, guaranteed the liquid level in this level gauge can the precision measurement water storage tank, and can follow the connecting pipe overflow after the liquid level in the balancing container cell surpasss the maximum value and get into the water storage tank, the liquid level in the balancing container cell can not be higher than the height of connecting pipe end opening down, remains at the maximum value all the time promptly.

Preferably, the lower connecting pipe and the upper connecting pipe are both provided with normally open valves.

Preferably, the differential pressure sensing device is a differential pressure transmitter.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the setting of condensation reflux unit for the liquid of the evaporation of being heated in the balance container cell carries out the condensation through condensation reflux unit and flows back to the balance container cell again under the effect of gravity in, and then makes the keeping throughout in the balance container cell at the maximum value, has guaranteed the liquid level that this level gauge can the accurate measurement water storage tank in.

2. Through steam delivery pipe with water storage tank and condenser pipe intercommunication, make steam when the moisture evaporates in the water storage tank get into the condensation in the condenser pipe, and to the balance container cell in, further make the keeping throughout in the balance container cell at the maximum value, guaranteed the liquid level that this level gauge can the precision measurement water storage tank, and can follow the connecting pipe overflow and get into the water storage tank after the liquid level in the balance container cell surpasss the maximum value, the liquid level in the balance container cell can not be higher than the height of connecting pipe end opening, remains throughout at the maximum value promptly.

Drawings

Fig. 1 is a schematic structural view of a liquid level meter according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a reflux condenser device according to an embodiment of the present invention.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention by those skilled in the art, the technical solutions of the present invention will now be further described with reference to the drawings attached to the specification.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless explicitly stated or limited otherwise, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, the present embodiment discloses a liquid level meter, which includes a differential pressure sensing device 1, a balance container chamber 2, a lower connecting pipe 3, an upper connecting pipe 4, a balance container pipe 5 and a condensation reflux device 6, in the present embodiment, the differential pressure sensing device 1 is a differential pressure transmitter, one end of the differential pressure sensing device 1 is communicated with the bottom of a water storage tank 7 through the lower connecting pipe 3, the side of the balance container chamber 2 is communicated with the top of the water storage tank 7 through the upper connecting pipe 4, the other end of the differential pressure sensing device 1 is communicated with the bottom of the balance container chamber 2 through the balance container pipe 5, and the top of the balance container chamber 2 is provided with the condensation reflux device 6 communicated therewith; through the setting of condensation reflux unit 6 for the liquid of the evaporation of being heated in the balanced container cell 2 carries out the condensation through condensation reflux unit 6 and flows back to balanced container cell 2 again under the effect of gravity in, and then makes the liquid level that can the precision measurement in the water storage tank of this level gauge in keeping throughout in the balanced container cell 2 at the maximum value.

Referring to fig. 2, the condensation reflux device comprises a condensation tank 61, a condensate 62 and a condensation pipe 63, the condensate 62 and the condensation pipe 63 are arranged in the condensation tank 61, the condensate 62 covers the condensation pipe 63, the bottom of the condensation pipe 63 is communicated with the top of the balance container chamber 2, the liquid evaporated by heating in the balance container chamber 2 is changed into steam and flows into the condensation pipe 63, the steam in the condensation pipe 63 is condensed by the condensate 62 to form condensate, the condensate flows back to the balance container chamber 2 again under the action of gravity, the liquid in the balance container chamber 2 is kept at the maximum value all the time, and the liquid level in the water storage tank can be accurately measured by the liquid level gauge.

Furthermore, the top of the condensation pipe 63 is also provided with a steam delivery pipe 8 communicated with the top of the water storage tank 7, so that steam generated when water in the water storage tank 7 evaporates enters the condensation pipe 63 to be condensed and flows into the small balance container chamber 2, the liquid level in the small balance container chamber 2 is further kept at the maximum value all the time, the liquid level meter can accurately measure the liquid level in the water storage tank, the liquid level in the small balance container chamber 2 can overflow from the upper connecting pipe 4 to enter the water storage tank 7 after exceeding the maximum value, and the liquid level in the small balance container chamber 2 is not higher than the height of the lower opening of the upper connecting pipe 4 and is kept at the maximum value all the time.

Further, the lower connecting pipe 3 and the upper connecting pipe 4 are both provided with a normally open valve 9.

The utility model discloses a theory of operation is: enough water is firstly added into the water storage tank 7, and the water level exceeds the upper connecting pipe 4 and then enters the balance container chamber 2 and the balance container pipe 5 until the liquid level in the balance container chamber 2 is flush with the lower opening of the upper connecting pipe 4, namely the liquid level in the balance container chamber 2 is always kept at the maximum value at the moment. When the external environment causes the water in the water storage tank 7 and the equilibrium container cabinet 2 to evaporate, wherein the water evaporated by heating in the equilibrium container cabinet 2 is changed into steam to flow into the condensation pipe 63, the steam in the condenser pipe 63 is condensed by the condensate 62 to form condensate, which flows back into the equilibrium container chamber 2 again under the action of gravity, in addition, the steam generated when the water in the water storage tank 7 is evaporated enters the condensing pipe 63 through the steam conveying pipe 8 to be condensed, and flows into the equalizing vessel chamber 2, so that the inside of the equalizing vessel chamber 2 is always kept at the maximum value, ensuring that the liquid level gauge can accurately measure the liquid level in the water storage tank 7, and the liquid level in the equalizing vessel chamber 2 will overflow from the upper connecting pipe 4 into the water storage tank 7 after exceeding the maximum value, the liquid level in the equalization vessel cell 2 is not higher than the level of the lower mouth of the upper connecting pipe 4, i.e. it is always kept at a maximum.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The above embodiments only show the embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention.

Claims

1. A fluid level gauge, characterized by: including differential pressure sensing device, balanced container cell, lower connecting pipe, last connecting pipe, balanced container pipe and condensation reflux unit, differential pressure sensing device's one end is through connecting pipe and water storage tank bottom intercommunication down, balanced container cell lateral part is through last connecting pipe and water storage tank top intercommunication, differential pressure sensing device's the other end is through balanced container pipe and balanced container cell bottom intercommunication, balanced container cell's top is provided with condensation reflux unit.

2. A gauge as claimed in claim 1, wherein: the condensation reflux device comprises a condensation tank, condensate and a condensation pipe, wherein the condensate and the condensation pipe are arranged in the condensation tank, and the bottom of the condensation pipe is communicated with the top of the small chamber of the balance container.

3. A gauge as claimed in claim 2, wherein: the top of the condensing pipe is also provided with a steam delivery pipe communicated with the top of the water storage tank.

4. A gauge as claimed in claim 1, wherein: and normally open valves are arranged on the lower connecting pipe and the upper connecting pipe.

5. A gauge as claimed in claim 1, wherein: the differential pressure sensing device is a differential pressure transmitter.