RU21192U1 - RESERVOIR FOR LIQUEFIED HYDROCARBON GAS - Google Patents

Description

200tt23349

Tank for liquefied petroleum gas

The technical field to which the utility model relates. The utility model relates to gasoline equipment, namely, to the construction of tanks for storing and distributing liquefied petroleum gas (propane, butane), and can be used for refueling vehicles at gas stations.

State of the art

A well-known reservoir for liquids, mainly light petroleum products (as USSR AS No. 1551615, B 65 D 88/12, 1988), including a housing with double walls and located between the last plates of insulating material. The outer wall of the casing is made of channels and plate elements, each of which is placed between the channels and fixed on them, channels with plate elements are fixed on the side surface of the inner wall with the formation of cavities for placement of plates of heat-insulating material, each plate on the outer surface is covered with a layer liquid sodium glass.

This tank is designed for storing light petroleum products and cannot be used for above-ground storage of liquefied gas because of the likelihood of its leakage to the outside, due to the composite structure of the outer wall.

Known stationary gas station for refueling vehicles with liquefied petroleum gas (LPG), produced by JSC "Gagarinsky Engineering Plant (a leaflet is attached), which includes a double-walled tank equipped with equipment for carrying out technological operations for receiving, storing and refueling vehicles, and also a system of automatic control and process control. The outer and inner walls are made of the same thickness. The specified tank is selected as a prototype.

In the known technical solution, the implementation of the outer wall of the tank of the same thickness with the inner wall allows, in case of depressurization of the main vessel, to maintain the tightness of the tank due to the "work of the outer wall, because it is also pressure (withstanding the necessary pressure), and can serve as the main vessel.

The disadvantage of the prototype is that the specified tank has a large weight, because both of its walls are pressure head, and for its manufacture a large amount of metal will be required. Due to the high metal consumption, this technical solution cannot be used for the conversion of existing above-ground single-wall reservoirs for liquefied petroleum gases that do not meet the conditions of safe operation, the use of which is associated with a number of restrictions and is allowed only at gas stations located outside the settlements and enterprises.

at 65 D 88/12

The essence of the utility model.

The problem solved by the claimed utility model is to reduce the metal consumption of aboveground reservoirs for liquefied petroleum gas at gas stations, while maintaining their technical and operational characteristics and explosion and fire safety.

The problem is solved in that in a tank for liquefied petroleum gas, containing a housing made with double walls forming an interwall space, communications for filling and draining liquefied gas and control and measuring means, according to a utility model, the outer wall of the housing is made in the form of a thin-walled shell, and instrumentation includes a system for continuous monitoring of the state of the inter-wall space.

In the inventive reservoir, the execution of the outer wall of the body in the form of a thin-walled shell, which is not a pressure head and does not form an external independent vessel, is intended primarily for the formation of inter-wall space and makes it possible to operate control and signaling devices that monitor the state of the inter-wall space and, if it changes parameters (pressure changes in the inter-wall space) informing the station staff about the internal depressurization (pressure ) Of the housing wall. This allows you to use a thinner metal for the outer shell than for the pressure wall, which makes the design less metal-intensive. In addition, this technical solution meets modern fire safety requirements and can be used for the conversion of existing above-ground single-wall tanks for liquefied petroleum gases. Equipping the tank with a system of constant monitoring of the state of the inter-wall space, including gas pressure measuring devices and an automatic alarm control unit connected to them, allows for monitoring the sealing of the inner wall of the housing and provides automatic alarm (light and sound signal) and automatic shutdown of compressor equipment in case of damage to the inner wall and gas entering the interstitial space of the tank.

To increase the resistance of the tank to fire, the inter-wall space is filled with insulating material. The heat-insulating material must be gas-permeable, because in the case of depressurization of the inner wall, the gas should not accumulate in one place in the inter-wall space, but should be evenly distributed throughout its entire volume. This allows for timely detection of gas leaks by devices for monitoring the state of the interwall space, located anywhere in the tank. Mineral wool may be used as the material indicated.

Depending on operational needs, the tank body is made of a cylindrical shape, or in the form of a parallelepiped. ,

List of drawings

The inventive utility model is illustrated by drawings, where: In Fig.1 shows a tank, a vertical section, with a diagram

installation of a system for continuous monitoring of the state of inter-wall space figure 2 - tank body made of cylindrical shape,

horizontal section;

in Fig.3 - the tank body, made in the form of a parallelepiped,

horizontal cut

Information confirming the possibility of implementation

utility model

The tank for storing liquefied petroleum gas contains a housing 1 (Fig. 1), made with double walls 2, 3, forming an interwall space 4. The inner wall 2 is made pressure head, and the outer wall 3 is in the form of a thin-walled shell (a thinner shell is used for its manufacture metal than for the wall 2). The interwall space 4 is filled with heat-insulating material 5, for example, mineral wool. The tank is equipped with an automatic system 6 for constant monitoring of the state of the inter-space 4, including a device for measuring gas pressure, namely, a contact manometer 7 with sensors 8, and a control unit 9 of the automatic light-sound alarm 10, which is triggered in the event of a gas leak into the inter-space 4. The tank also contains conventional devices 11 for filling and draining liquefied petroleum gas.

In case of depressurization of the inner wall 2, the gas enters the interstitial space 4 and spreads evenly throughout its entire volume; the gas permeability of the heat-insulating material 5 does not prevent its spread. In this case, the pressure in the inter-wall space rises (decreases) and the contact gauge 7 of the inter-space control system is activated, connected to the automatic alarm control unit 9. A light-sound signal informs the filling station maintenance personnel about the depressurization, the flow of liquefied petroleum gas is automatically stopped, it turns off compressor equipment, and operations to fill the tank with gas and mainly to the consumer in all areas of the filling station are stopped antsii.

Patent Attorney of the Russian Federation, per. T.A. Shishurina

- & f.0f

Claims (6)

1. The reservoir for liquefied petroleum gas, comprising a housing made with double walls forming an inter-wall space, filling and draining communications and control and measuring means, characterized in that the outer wall of the body is made in the form of a thin-walled shell, and control and measuring means include a system continuous monitoring of the state of the interwall space.  2. The tank according to claim 1, characterized in that the system of constant monitoring of the state of the inter-wall space includes devices for measuring gas pressure and an automatic alarm control unit connected to them.  3. The tank according to claim 1 or 2, characterized in that the housing is made of cylindrical shape.  4. The tank according to claim 1 or 2, characterized in that the housing is made in the form of a parallelepiped.  5. The tank according to any one of paragraphs. 1-4, characterized in that the interwall space is filled with heat-insulating gas-permeable material. 6. The tank according to claim 5, characterized in that mineral wool is used as the heat-insulating material.