RU2771906C1 - Sectional container - Google Patents

Abstract

FIELD: storage tanks design.

SUBSTANCE: invention relates to the design of storage tanks of a sufficiently large volume for receiving, storing and dispensing acids, alkalis and other liquids. Sectional container, consisting of two or more similar containers of small volume isolated from each other, but connected into a single system based on the principle of communicating vessels. Each component container is like a simple glass with a tight closing lid, on which a U-shaped curved connecting pipe is installed in the form of two parallel pipes connected at the top, one of which enters one of the containers, and the second into the second, adjacent to the first, container, creating a system of communicating vessels between them, while, if necessary, any individual container in the system can be disconnected from the system by simply removing U-shaped connecting pipes from adjacent containers, while the system itself will operate in the same mode, without requiring a stop for reconfiguration of the technological process.

EFFECT: proposed sectional tank makes it possible, if necessary, to quickly place the sectional tank or part of it in a new place, and the general configuration of the sectional tank system in terms of the terrain can be very diverse; can be operated without the use of various mechanical pumping devices (different pumps); does not have a single docking joint in contact with the working fluid, i.e. in principle eliminates the possibility of various leaks through gaskets and taps and other shut-off valves; does not require the presence of stationary reserve tanks in the production process; allows at any time without stopping the production process to inspect and prevent or replace any of the containers that are part of the sectional container.

2 cl, 3 dwg

Description

The invention relates to the design and operation of storage tanks of sufficiently large volumes for receiving, storing and bottling (distributing) acids, alkalis and other liquids, for example, in the chemical industry and other types of industries associated with the above components.

Traditionally, these containers by design are vessels of a cylindrical or other shape, for example, tanks or cisterns, made single-walled or double-walled with a filler neck, usually equipped in the upper part, and devices in the form of outlet pipes or necks in the lower part of the container on the side or in the bottom part, on which bypass valves or other devices are mounted, designed to transfer the contents of the containers to another tank or to supply liquid directly to the process zone.

Filling and unloading of containers can be either forced, by a pump, or by gravity, or by applying pressure by some gaseous medium to a liquid mirror.

The main disadvantages of traditional containers for storage and bottling of aggressive liquids are:

- in the event of a breakdown (leakage) of a large volume container, for repair it is always necessary to quickly move a large amount of product to a reserve (spare) container. The problem with reserve (spare) containers is exacerbated if various types of aggressive liquids are used in production, which affect the material of the containers in different ways. At the same time, it should be borne in mind that the reserve tank should be territorially located close to the main tank, i.e. occupy any part of the production area, which is irrational and not always feasible without additional production or capital costs. The need for an operation to overflow liquid from one container to another also arises when the sealing gasket at the point of connection of the drain (bottom) pipe to the transfer pipeline fails or when the sealing gasket in the bypass valve fails;

- preventive maintenance of a large capacity, associated with its movement and other preparatory work, is very laborious, complex in organizational terms:

- the containers themselves, due to their large weight and dimensions, require the construction of special foundations for their installation from materials resistant to aggressive liquids and their vapors, or must have additional chemical protection;

- pumps for pumping the contents of tanks must be made of materials resistant to aggressive liquids and their vapors, which increases their cost compared to the cost of standard pumps and, in general, leads to a significant increase in the total capital and operating costs for the use of tanks.

To eliminate these shortcomings, a sectional container (Fig. 1) is proposed, consisting of two or more containers of the same type isolated from each other (Fig. 1, pos. 1) of small volume each, but connected into a single system based on the principle of communicating vessels. Each component container is like a simple glass with a tightly closed lid (Fig. 2, item 3), through which passes a U-shaped curved connecting pipe (Fig. 2, item 2) in the form of two parallel pipes communicating at the top, of which one enters one of the containers, and the second enters the second, adjacent to the first container, creating a system of communicating vessels between them, while, in working condition, the liquid level in all containers is set at the same level.

The lid itself (Fig. 3, item 3) must have a special capped (Fig. 3, item 7) hole for steam, which, when closed, ensures the tightness of the space above the liquid mirror, and when open, equalizes the pressure under the lid with atmospheric pressure. . Through the same hole, overpressure can be supplied to the section of the tank to pump the product from one tank to the neighboring ones through the U-shaped connecting pipes.

In plan view, the container system may schematically appear as shown in FIG. 1. With such a connection of individual containers into a single system, any individual container in the system, if necessary, can be disconnected or withdrawn (withdrawn) from the system by simply removing U-shaped connecting pipes from neighboring containers (Fig. 1, item 2 ), while the system itself will function in the same mode, without requiring a stop or transfer of the product to the reserve tank.

The containers included in the sectional container can be either single-walled or double-walled. Double-walled containers can consist of two single-walled containers inserted one into the other, and the outer container in terms of internal dimensions should be slightly larger than the outer dimensions of the inner container.

For the initial filling of the proposed sectional system of containers, it is enough to fill one of the containers with the product, then seal it with a lid, and then apply excess pressure to the space above the product mirror, which will cause the product to flow through the U-shaped connecting pipes into adjacent adjacent containers. , while the level of the product in the first container will begin to decrease, and in neighboring, adjacent containers, it will increase. If at this moment the overpressure in the first container is stopped, then further equalization of the product levels in all adjacent containers under the influence of atmospheric pressure will occur automatically. Further, by topping up the product in the first container to the desired level in any way, the product is increased to the desired level in other, adjacent containers. According to the same scheme, the remaining sections of the sectional tank are filled.

In the future, during the operation of the sectional tank, the maximum permissible lower level of filling of all tanks must be maintained and this level must be at least 50 mm higher than any lower edge of the U-shaped connecting pipe of the system.

The sectional tank is unloaded using a flexible discharge hose (Fig. 1, Fig. 2, item 4), one end of which is permanently located in one of the tank sections, i.e. in the one through which the product is taken, and the edge of the second output end before the start of unloading (selection) is above the level of the liquid mirror in the sectional tank (Fig. 2, option "a").

To remove (drain) the product from the container, it is enough to lower the cut of the second end of the flexible discharge hose (Fig. 2, item 4) below the level of the liquid mirror in the sectional container, as shown in Fig. 2, option "b". In this case, unloading will be carried out by gravity.

Schemes of the design device of the proposed sectional capacity are shown in the drawings of Fig. 1, Fig. 2 and FIG. 3.

Fig. 1 is an exemplary schematic plan for connecting individual unit containers into a single system.

pos. 1 - single capacity;

pos. 2 - U-shaped connecting pipe;

pos. 3 - cover of a single container;

pos. 4 - flexible discharge hose.

Fig. 2 options".

pos. 4 - flexible discharge hose in the position of liquid storage or the process of adding product to the entire system.

Option "b".

pos. 4 - flexible discharge hose, in the position of unloading the container (product selection).

Fig. 3 - section of the container lid;

pos. 2 - U-shaped connecting pipe;

pos. 3 - cover of a single container;

pos. 5 - union nut;

pos. 6 - sealing sleeve;

pos. 7 - cap.

The technical result of the invention is that the proposed sectional capacity:

- makes it possible, in case of production need, to quickly place a sectional tank or part of it in the right place, and the general configuration of the sectional system in terms of the terrain can be very diverse, taking into account the configuration of the room itself and the location of other equipment placed in it;

- with constant operation as a technological tank, it allows at any time, without stopping the entire production process, to inspect and prevent any of the individual tanks that are part of the sectional tank;

- provides fast and not labor-consuming installation of spare capacities;

- can be operated without the use of various mechanical pumping devices (different pumps)

- does not have a single docking joint in contact with the working fluid, i.e. in principle, the possibility of various leaks through gaskets, taps, etc. is excluded.

Claims (2)

1. Sectional container for receiving, storing and distributing liquids, including aggressive ones, characterized in that it consists of two or more containers isolated from each other, each of which has a cross-sectional shape of either a circle, or a square, or any polygon with the top cover and through the covers connected to each other by means of a U-shaped bent connecting pipe in the form of two parallel pipes communicating with each other, one of which enters one container, and the second - into the second, adjacent to the first container, creating a system of communicating vessels between them , and the inlet pipes of the branch pipes themselves are mounted one directly on the lid of this container, and the second on the lid of the adjacent container adjacent to it; 2. Sectional container according to claim 1, characterized in that the containers are double-walled.

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