RU2391596C2 - Quick disconnect of pipelines - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: quick disconnect of pipelines consists of male and female parts of connection. End surfaces of elements of each part of the connection form continuous end surfaces in non-operation state; connecting elements of both mains are coaxially arranged in each part of the connection. In the male part there are arranged two immobile elements functioning as pushers and two mobile elements of shut-off valves, during connection interacting with mobile elements of shut off valves and with pushers installed in the female part of the connection. Connecting channels are made in the female part of the connection; they facilitate free circulation of fluid from one cavity to another in a disconnected state and they shut-off these channels with a mobile disconnect valve in a connected state.

EFFECT: facilitating fast connecting and disconnecting pipelines during pump station operation.

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Description

The invention relates to the field of engineering, in particular to devices for connecting high pressure pipelines, and is intended to connect flexible hoses or hoses of hydraulic rescue tools.

Analogues of the invention, "Quick disconnect piping" are:

- Device for connecting pipelines, USSR author's certificate No. 1560889, class. F16L 37/28, 1990, OB No. 16, pp. 161-162, Moscow;

Quick disconnect connection of pipelines, USSR copyright certificate No. 1333928, class. F16L 37/00, 1987, OB No. 32, p. 145, Moscow;

- Quick disconnect connection of pipelines RF patent No. 2224942, class. F16L 37/22, 2004, OB No. 6, pp. 797-780, Moscow.

A device for connecting pipelines is known, comprising two contacting valves located in housings, one of which is spring-loaded, and seats in valve bodies are made directly from their contacting ends, while it is provided with a nut mounted on the second valve body and connected to it the possibility of their mutual rotation, and a coupling element mounted on this housing and articulated with the housing of the first valve, while the nut partially covers the coupling element (Device for connecting pipes oprovodov taken along the AS USSR №1560889, 1990, ON №16, str.161-162, Moscow) (analogue) (1).

A quick-disconnect connection of pipelines is known, containing a fitting with a groove, balls are installed in the pipeline body with a spring-loaded cylindrical sleeve enclosing it, and a spring-loaded coupling with a valve, a pyro-pusher, a sensing element in the form of a piezoelectric force sensor, an alarm circuit pyro-pusher, pressure glands and a return are inserted into it a shut-off valve for the working fluid, while a spring-loaded coupling with a valve is installed in the pipeline body and is in communication with the pyro-pusher through sensitive the th element and the pusher trigger, alarm circuits are led to the pusher trigger through the pressure glands located in the nozzle body, and the check valve of the working fluid shutoff is located inside the nozzle body (quick disconnect pipe connection made by the USSR AS No. 1333928, 1987, OB No. 32, p. 145, Moscow) (analogue) (2).

A quick-disconnect connection of high pressure pipelines is known, consisting of male and female parts, the first of which includes a sleeve, on the outer surface of which an annular groove is made, and a shut-off valve coaxially located inside the sleeve, and the second - a spring-loaded shut-off sleeve with a sleeve located inside it with holes for shut-off balls and a shut-off valve, while the shut-off sleeve is provided with an inner annular protrusion, in addition, in the male part of the connection, the shut-off valve is made spring-loaded, the annular groove is made in the longitudinal direction of variable cross-section, and the sleeve is enclosed in a protective spring-loaded sleeve of elastic material, overlapping in the inoperative position of the connection, the section of the ring groove, in the covering part of the connection, the outer sleeve is enclosed in a sleeve of elastic material made in the form of a cylinder with an axial the bore, the diameter of which corresponds to the outer diameter of the inner sleeve, the shut-off valve is made stationary and a spring-loaded movable sleeve, and between the specified sleeve and the inner sleeve there is a metal cap made in the form of a cup, the hole in the bottom of which covers the outer surface of the spring-loaded movable sleeve, and the side surface of the cap in the inoperative position of the connection overlaps the holes of the inner sleeve, while the end surfaces of the elements of each of the parts connections in the idle position form a continuous end surface, and the length of the protective sleeve of the male part is selected from the condition of penetration into the cavity, brazed with a metal cap at the working position of the connection, while the central part of one of the solid end surfaces is made in the form of a protrusion, and the other in the form of a cavity corresponding to it (quick-disconnect connection of pipelines made according to the patent of the Russian Federation No. 2224942,2004, OB No. 6, p. 797-780, Moscow) (the closest analogue) (3).

Known designs of quick-connect pipe connections have a significant drawback: they must be docked and disconnected when the pumping station is off.

The proposed technical solution is aimed at creating the design of a small-sized device for quickly simultaneously connecting the pressure and drain lines of the hydraulic system of the tool or disconnecting without loss of working fluid during the operation of the pump station.

The problem is solved due to the fact that in one of the parts of the connection connected to the pumping station, channels are made that provide free circulation of fluid from one cavity to another in the open state and overlap of these channels by one of the movable valves of the connector in the connected position.

Conducted patent research did not reveal similar technical solutions, which allows us to conclude about the novelty of the claimed object.

The essence of the proposed technical solution is illustrated by schemes, where:

figure 1 shows the covered part of the quick connection of pipelines,

figure 2 shows the covering part of the quick connection of pipelines,

figure 3 - quick connection in the working (docked) position, where:

1 - covered part of the connection,

2 - covering part of the connection,

3 - a solid end surface of part 1,

4 - a solid end surface of part 2,

5 - fixed pusher part 1,

6 - fixed pusher part 1,

7 - movable element of the shutoff valve of part 1,

8 - movable sleeve of the shut-off valve of part 1,

9 - movable sleeve of the shut-off valve of part 2,

10 - movable sleeve of the shut-off valve of part 2,

11 - stationary pusher part 2,

12 - stationary pusher part 2,

13 - connecting channels,

P is the pressure.

The proposed “Quick disconnect pipe connection”, intended for connecting high pressure pipelines, in particular for connecting flexible hoses or hoses of hydraulic rescue tools, consists of two parts, the male part of the connection 1 and the female part of the connection 2, while the end surfaces of the elements of each of the connection parts in the idle position, they form continuous end surfaces 3 and 4, and in each of parts 1, 2, the connecting elements of both highways are coaxially placed, and clearly in the male part 1 there are two fixed elements 5 and 6, which are the pushers, and two stationary elements 7 and 8 of the shut-off valves, which interact with the movable elements 9 and 10 of the shut-off valves and with the pushers 11 and 12, placed in the female part connection 2, while in the covering part of connection 2 connected to the pumping station, made connecting channels 13, which provide free circulation of fluid from one cavity to another in the open state and the overlap of these channels 13 movable valve 9 of the connector in the connected position.

The manufacture and assembly of the proposed "Quick disconnect pipe connections" can be performed, for example, as follows. All metal parts included in the connection can be made, for example, of profiled long products by machining on metal cutting machines, and assembly of the connection structure can be performed, for example, as follows. First, the assembly and adjustment of the individual nodes, and then their installation and fastening with the male part of the connection 1 and the installation and fastening with the female part of the connection 2, and then perform the final setup and test the connection.

For the manufacture of parts of the connection does not require the use of special and expensive equipment and materials.

"Quick disconnect pipe" works as follows. Before starting work, the connection is fastened to the sleeves, for example, the male part of the connection 1 is fastened to the sleeves of the rescue tool, and the female part of the connection 2 is fastened, for example, to the sleeves of the pumping station. In the disengaged state, the liquid in the 2nd part of the connection from the injection cavity through the channels 13 freely circulates in the drain cavity. The joining of both parts of the connection is carried out by introducing into contact the end surfaces 3, 4 of the covered 1 and covering 2 parts of the connection, then further closer approach of both parts of the connection towards each other, at the same time, at the beginning, the valves that connect the cavity of the main with the cavities of the tool open this fluid moves through the connecting channels 13 and the open valve into the tool, and then the channels 13 are closed by a movable valve 9 and the fluid moves through the main pipe of the tool and about espechivaetsya tool performance. When the connection is disconnected, the channels 13 open and the fluid circulates freely through them. In addition, when connecting both parts 1, 2, the fixed elements 5, 6 of the connector valves of the male part 1 act on the movable elements 9, 10 of the valves of the female part 2 and, accordingly, the stationary elements 11, 12 of the valve valves of the male part 2 act on the movable elements 7 , 8 valves of the covered part 1 for simultaneous opening and closing of passage sections of both highways.

The fastening of the connection parts 1, 2 can be performed, for example, mechanically using a threaded connection using a bayonet or ball mount.

Main dimensions, parameters and characteristics

Nominal pressure, MPa (kgf / cm ² ) 80 (800) Dimensions of the covered part of the connection, mm ⌀25 × 15 Dimensions of the female part of the connection, mm ⌀25 × 20 The mass of the product in docked form, kg 0.12

The proposed design of "Quick disconnect piping" allows you to:

- to dock and disconnect pipelines when the pumping station is on,

- to save time during maintenance, as well as to use the human resource more efficiently, since an additional worker is not needed that would turn off the pump unit before connecting and disconnecting the connection, in addition, the design is simple to manufacture and safer to operate.

The proposed design of "Quick Disconnect Pipeline Connection" is currently in preparation for mass production under the KB-2 code.

Claims (1)

A quick-disconnect pipe connection consisting of male and female parts, in each of which shut-off valves are placed, and the end surfaces of the elements of each of the connection parts in the inoperative position form a continuous end surface, while in each part the connecting elements of both connection lines are two coaxially fixed elements, which are pushers, and two movable elements of shut-off valves, while the fixed connection elements when docking interact with the corresponding with the moving elements of the opposite part of the connection, this ensures the simultaneous opening of the bore of both pipes and vice versa - closing the bore of both pipes when disconnected, characterized in that in one of the parts of the connection connected to the pump station, channels are provided that allow free circulation of liquid from one cavity to another in the open state and the overlapping of these channels by one of the movable valves of the connector in the connected position.

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