CN202126635U

CN202126635U - Liquid level controller for saturated liquid

Info

Publication number: CN202126635U
Application number: CN2011201983026U
Authority: CN
Inventors: 陆象波
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-14
Filing date: 2011-06-14
Publication date: 2012-01-25
Anticipated expiration: 2021-06-14

Abstract

The utility model discloses a liquid level controller for saturated liquid. The liquid level controller comprises a jet flow throttling nozzle (1) and a balance gas automatic regulating pipe (2) and is characterized in that the jet flow throttling nozzle (1) is connected at the bottom of a heat exchange container (5) or a position close to the bottom of the heat exchange container (5) through a pipeline; the middle of the jet flow throttling nozzle is connected with a liquid level control part of the heat exchange container (5) through the balance gas automatic regulating pipe (2); the connecting position of the middle of the jet flow throttling nozzle and the liquid level control part of the heat exchange container (5) is the highest allowable liquid level part of the heat exchange container; the jet flow throttling nozzle (1) is connected with a bypass valve (3) in parallel; and an inlet insolating valve (4) is arranged in the front of the jet flow throttling nozzle (1). The liquid level controller is suitable for the automatic discharge of liquid formed through the continuous condensation of gaseous substances in the container with relatively unbalanced condensation quantity and has the characteristics that the system is simple, electronic parts and components are not needed, the liquid level regulating range is large, the failure rate is low, the service life is long, a liquid level signal does not need to be collected to be used as the feedback quantity of a regulating valve, the liquid level of the container can be stabilized, etc.

Description

The saturated solution fluid level controller

Technical field

The utility model relates to a kind of certain material gaseous state dynamic conversion and becomes liquid fluid level controller.

Background technology

In airtight container; Because the exchange of heat; After gaseous material was emitted gasification latent heat in the container, gas constantly condensed into liquid, and the fluent meterial liquid level can rise steadily in the container; Relatively stable for the safety that guarantees container and heat, production technology often need be controlled at a certain safety zone with its liquid level.Present fluid level control device mode has variable valve to regulate liquid level mode, the control of vapour-liquid two phase valves, pump control type etc., and variable valve is regulated the liquid level mode and had system complex, and it is many to regulate components and parts, and variable valve is high because of the cavitation erosion failure rate, and the life-span is short; Variable valve is prone to jam; When container inner pressure was higher, its level gauging difficulty was big, measured and was forbidden to cause characteristics such as liquid level control is inaccurate.Though vapour-liquid two phase valves control is simple in structure, failure rate is low, and the life-span is long, and when bigger variations took place heat in the container, self-regulation ability was poor, and palpus arrives characteristics such as on-site manual adjusting.The pump control type exists pump high because of the cavitation erosion failure rate, system complex, shortcomings such as the difficult maintenance of rotating machinery.

Summary of the invention

The utility model purpose is to provide a kind of system simple, and the liquid level range of adjustment is big, and failure rate is low, and the life-span is long, need not gather liquid level signal as the variable valve feedback quantity, and can reach the saturated solution fluid level controller of liquid level in the stable container.

The technical scheme that the utility model adopts is: a kind of saturated solution fluid level control device; Include jet throttle nozzle, the automatic adjustable pipe of balance gas; It is characterized in that: said jet throttle nozzle is through pipeline and heat exchange container bottom or approach bottom position and be connected; Link to each other with control place of heat exchange container liquid level through the automatic adjustable pipe of balance gas in the middle of the jet throttle nozzle, its link position is the highest permission liquid level of heat exchange container place; Jet throttle nozzle parallel connection one bypass valve; One import isolation valve is installed before the jet throttle nozzle.

Said jet throttle nozzle is two conically shaped body nozzle positioned opposite, and its counterpart place nozzle inside diameter is little, and the exit nozzle inside diameter is big.

The automatic adjustable pipe of said balance gas is positioned on the inner pipe section of heat exchange container has the balance pore.

The utility model is applicable to that gaseous material constantly condenses into liquid in the container, and the automatic discharge of the unbalanced relatively liquid of condensation number, and it is simple to have system; Do not need electronic devices and components; The liquid level range of adjustment is big, and failure rate is low, and the life-span is long; Liquid level signal need not be gathered as the variable valve feedback quantity, and characteristics such as liquid level in the stable container can be reached.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the jet throttle nozzle structural drawing in the utility model;

Fig. 3 is the automatic adjustable pipe structural drawing of the balance gas in the utility model;

Fig. 4 is the balance pore place cut-open view of the automatic adjustable pipe of balance gas in the utility model;

Among the figure, the 1st, the jet throttle nozzle; The 2nd, the automatic adjustable pipe of balance gas; The 3rd, bypass valve; The 4th, the import isolation valve; The 5th, heat exchange container, the 6th, balance pore.

Embodiment

According to accompanying drawing and embodiment the utility model is described further below:

Can know from Fig. 1; The utility model includes jet throttle nozzle 1, the automatic adjustable pipe 2 of balance gas; With heat exchange container 5 bottoms or approach bottom position and link to each other, the automatic adjustable pipe of balance gas is connected the highest permission liquid level of heat exchange container place to jet throttle nozzle 2 through pipeline; The bypass valve 3 of jet throttle nozzle parallel connection one close caliber; Import isolation valve 4 with caliber is installed before the jet throttle nozzle.

Can know that from Fig. 2 the jet throttle nozzle is two conically shaped body nozzle positioned opposite, its counterpart place nozzle inside diameter is less, and the exit nozzle inside diameter is bigger, the saturated liquid measure design that its size is discharged according to the heat exchange container domestic demand.

Can know from Fig. 3, Fig. 4; The automatic adjustable pipe of balance gas is for connecting the pipeline that links to each other with control place of heat exchange container liquid level in the middle of the jet throttle nozzle; Being positioned at the inner pipeline of heat exchange container has the balance pore, and automatic adjustable pipe internal diameter of balance gas and balance pore opening are according to the internal diameter design of two nozzles in the jet throttle nozzle.

The utility model in the course of the work, when liquid level in the container raises (reductions), the static pressure rising (reduction) that produces because of liquid level; The flow of jet throttle nozzle 1 will increase (minimizing) automatically; Gas flow in the automatic adjustable pipe 2 of balance gas can reduce (increase), the minimizing (increase) of gas flow in the automatic adjustable pipe 2 of balance gas automatically according to Bernoulli equation simultaneously; Can further increase the fluid flow of (minimizing) jet throttle nozzle 1; Automatically regulate thereby reach the preliminary of liquid level, but this self-regulating fluid flow is less, particularly container inner pressure is higher; The ratio of the static pressure change point container inner pressure that liquid level change is produced in the pressure of jet throttle nozzle 1 inlet hour, this automatic regulative mode effect is littler.When liquid level when above automatic regulative mode can't be balanced; Liquid level rises to the automatic adjustable pipe 2 of balance gas; Gas flow in the automatic adjustable pipe 2 of balance gas will gradually reduce along with the rising of liquid level, and the corresponding increase of the fluid flow in the jet throttle nozzle 1 reaches the liquid level autoregulation.

Import isolation valve 4 is in the utility model course of work, as it is too small to run into the saturated solution flow, and liquid level is crossed low or when not having liquid level work, closed small inlet isolation valve 4, the auxiliary saturated solution liquid level that improves in the container.In container liquid level be higher than the automatic adjustable pipe 2 of balance gas with the container link position time, drive big bypass valve 3 in right amount, the auxiliary saturated solution liquid level that reduces.

The jet throttle nozzle is selected according to saturated solution flow design in the pressure in the container and top hole pressure difference and the container in the utility model.

More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model; The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described, under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications; These variations and improvement all fall in the utility model scope that requires protection, and the utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. saturated solution fluid level controller; Comprise jet throttle nozzle (1), the automatic adjustable pipe of balance gas (2); It is characterized in that: jet throttle nozzle (1) is through pipeline and heat exchange container (5) bottom or approach bottom position and link to each other; Automatically regulate (2) pipe through balance gas in the middle of the jet throttle nozzle and link to each other with heat exchange container (5) liquid level control place, its link position is the highest permission liquid level of heat exchange container place; The parallelly connected bypass valve of jet throttle nozzle (1) (3); The preceding installation one import isolation valve (4) of jet throttle nozzle (1).

2. according to the said saturated solution fluid level controller of claim 1, it is characterized in that: said jet throttle nozzle (1) is two conically shaped body nozzle positioned opposite, and its counterpart place nozzle inside diameter is little, and the exit nozzle inside diameter is big.

3. according to the said saturated solution fluid level controller of claim 1, it is characterized in that: the automatic adjustable pipe of said balance gas (2) is positioned on the inner pipe section of heat exchange container has balance pore (6).