RU2813001C1 - Emergency release coupling - Google Patents

Abstract

FIELD: pipeline transport.

SUBSTANCE: invention concerns emergency shutdown and disconnection systems in the design of articulated pipelines of loading and unloading installations for safe and environmentally responsible loading of the transported product into tankers, railway tanks, tank trucks, during bunkering and refuelling of sea and river vessels, in refuelling installations for aircraft and space rockets. The emergency release coupling is made in the form of a cylindrical body with pipeline connectors on two opposite sides consisting of two sections connected by a connecting element. Each section contains a piston with an axis and at least one spring, where the connecting element contains a breaking element, and in each section there is a piston having a streamlined tapered shape on one side and an axis with a spring stop on the other side, connected to the guide support of the section through a put-on onto the axle, a spring, a spring stop sleeve, and a sliding bushing. A piston sleeve is fixed in the streamlined cone of one of the pistons, and in each section there is a seat with seals between the sections, which fixes the product seal, and a shock-proof ring is located on each section and at least one cable is located on one of the sections.

EFFECT: reliable disconnection of a hose or pipeline in emergency situations, sealing it tightly on both ends.

20 cl, 10 dwg

Description

Field of technology

This technical solution relates to the field of pipeline transport and concerns emergency shutdown and disconnection systems in the design of articulated pipelines of loading and unloading installations for the safe and environmentally responsible loading of the transported product into tankers, railway tanks, tank trucks, during bunkering and refueling of sea and river vessels , in refueling installations for aircraft and space rockets.

State of the art

It is known from the prior art that the emergency release coupling is and is considered as a separate key element of the design of hose installations, transfer hoses for which special requirements are provided for operation, performance of a set of calculations, as well as test requirements and test evaluation criteria. In this case, the coupling itself is part of the detachable connection of pipelines.

A detachable pipeline connection is known (SU 932079 dated November 17, 1980, class IPC F16L 37/28; F16L 29/00), containing two coupling halves with spring-loaded valves, the body of one of which is integral with the connecting element, and fastened by means of a locking element and a sleeve, Moreover, on the outer surface of the connecting element there is a protrusion, on one side of which there is a spring, and on the other side of the protrusion there is an additional spring, the rigidity of which is greater than the main one.

Detachable pipeline connections are known (SU 1043412 dated 05/19/1982, IPC class: F16L 37/28; F16L 29/00; RU 2062939 dated 02/16/1994, IPC class F16L 37/30), containing two coupling halves with spring-loaded valves located inside them, connected by means of a locking element of a locking sleeve.

The disadvantage of the above technical solutions is their use only for axial loads, which makes it impossible to use with radial loads. In this case, the fixing element is a bushing, which determines the use of detachable connections on small pipeline diameters and leads to the impossibility of using these technical solutions for industrial shipment of large volumes of product using large diameters. There is no possibility of external remote operator control.

A quick-release connection of pipelines is known (patent RU 2373451 dated 06/04/2008, class IPC F16L 37/30), designed for disconnecting pipelines without draining liquid from it and consisting of two coupling halves with spring-loaded shut-off valves containing a rod with a plate in contact with an O-ring. The rod with the plate is installed with the ability to move relative to the sealing ring, and the rod has axial grooves connecting the internal cavity of the coupling half with the atmosphere when the pressure of the medium inside the latter increases.

The disadvantage of this connection is that its connector requires the preliminary removal of the safety element (clamp), that is, the presence of a person is required to remove the clamp, which makes it impossible to use the coupling for emergency situations. To ensure sealing of the separated parts (coupling halves), it is necessary to perform a relatively large movement of one coupling half relative to the other in the longitudinal direction. In addition, the known quick-release connection of pipelines can perform its functions only when a mechanical impact is applied to it, directed in the longitudinal direction, which leads to the impossibility of the coupling to operate under radial loads, its inapplicability for industrial shipment of the product, and there is no possibility of external remote control by the operator.

A burst coupling is known (patents RU 177039 U1 dated July 25, 2017, class IPC B67D 7/00 and RU 209148 U1 dated August 13, 2021, class MPK B67D 7/34) containing inlet and outlet pipes made with the possibility of their detachable connection, connection and The separation of the pipes is carried out by applying appropriate forces to them, directed along the longitudinal axis of the coupling. The clamping elements are made in the form of elastic grips, each of which has a locking protrusion at the end, which is an elastic grip and interacts with a corresponding recess located on the surface of the inlet pipe.

The disadvantage of the known burst coupling is its intended purpose, namely use only at fuel dispensers, which is due to the small diameter, low pressure, restrictions on the type of product being pumped, and which leads to the impossibility of using the coupling for industrial shipment of the product in large volumes and does not protect the pipeline during radial loads, there is no possibility of external remote control of the clutch by the operator.

A burst fitting is known (patent RU 198380 U1 dated December 26, 2019, IPC class F16L 37/30, B64D 37/00, B64D 37/32) for blocking the fuel line under mechanical impact on the pipeline of the said line by installing a destructible element in this line, for destruction of which requires mechanical action in an arbitrary direction. The magnitude of this impact is less than the magnitude required to destroy the pipeline itself. The burst fitting provides emergency, emergency disconnection of the fuel line without the participation of maintenance personnel, which allows you to protect the fuel system from damage in emergency situations and prevent fuel from leaking out of the damaged line even if there is pressure in it. The rods sealing the pipeline are located inside the spacer connecting the two parts of the body, which is designed to be destroyed by external influence on a fitting of a certain size. In order to ensure the destruction of the spacer, in a given section, an annular groove is made on it, creating a weakened section along which the spacer is divided into two identical parts. The specified technical solution is taken as a prototype.

The disadvantage of this technical solution is that the breaking element is a spacer, which essentially performs the sealing function of the rod seat and is part of the body of the entire fitting. The rupture of the annular groove on the spacer may not occur evenly, especially under radial external loads, which can lead to deformation of the spacer itself, which will affect the tightness of the valve. The ball installed between the rods can be irretrievably lost in the event of an emergency disconnection of the coupling. The technical solution also indicates that the flow area - the size of the annular slots between the inner surface of the spacer and the conical surface of the rods - is less than the diameter of the ball, which may indicate an underestimation of the pipeline diameter. Thus, the design of a burst fitting contains two elements that, as a result of emergency disconnection, will be lost or unsuitable for further use. The subsequent assembly of the burst fitting is very difficult, because requires simultaneous installation of the ball between the spring-loaded rods and spacers in both parts of the body, which blocks access to the ball; this is very difficult to do without special equipment. The tightness of the replaced spacer is questionable, there is no lapping with the old rods and seal, it is impossible to carry out tests, which affects the performance of the burst fitting.

Technical solution tasks

The objective of the proposed technical solution is to develop a new emergency release coupling for use in the design of articulated pipelines in loading and unloading installations for safe and environmentally responsible shipment of the transported product, capable of reliably disconnecting a hose or pipeline in emergency situations with a hermetically sealed overlap on both sides.

Depending on the operating requirements, the emergency release coupling must have an external remote controlled disconnection from the drive or an uncontrolled disconnection - calculated depending on the loads on the hose or pipeline and in both cases with the release of interlocked valves and hermetically shutting off the flow on both sides of the disconnected pipeline.

The locking devices used in the proposed technical solution must be replaceable, easy to operate with the ability to replace worn elements, and also mechanically interlocked.

Disclosure of the essence of the technical solution

The technical solution to the above problem is solved by developing an emergency release coupling, made in the form of a cylindrical body with pipeline connectors on two opposite sides, consisting of two sections connected by a connecting element, each section containing a piston with an axis and at least one spring and characterized in that the connecting element contains a breaking element, and in each section there is a piston installed, having a streamlined cone-shaped shape on one side and an axis with a spring stop on the other side, connected to the guide support of the section through a spring put on the axis, a spring stop sleeve and a bushing sliding, while a piston sleeve is fixed in the streamlined cone of one of the pistons, and in each section there is a seat with seals between the sections, which fixes the product seal, and a shock-proof ring is located on each section and at least one cable on one of the sections.

The specified technical solution ensures the use of an emergency release coupling (hereinafter referred to as MAR) as part of hose installations, loading, unloading, transfer hoses (levers), articulated pipelines and manipulators, standers and other loading and unloading installations for the safe and environmentally responsible shipment of the transported product. In emergency situations, it provides guaranteed disconnection of pipelines with hermetically sealed closure on both sides. The locking devices used in the claimed technical solution are mechanically interlocked, are replaceable, easy to operate and have the ability to replace worn elements.

If external control of emergency release is required, a clamp with a disconnect lock is used. The clamp provides a tight connection of the flanges of the coupling sections and guaranteed disconnection of the pipeline in emergency situations. The disconnecting lock ensures the opening of the half-clamps through the use of an actuator, which can be installed directly on the MAP and connected to the disconnecting lock or outside the coupling and, due to the tension of the cable (or other rod) connected to the disconnecting lock, ensures the opening of the half-clamps, and the presence of a spring in each half-ring of the clamp provides additional release of the flanges.

If external control of the emergency release clutch is not required, it is possible to use MAR without a clamp, release mechanism and actuator. In this case, two parts of the coupling, each with its own locking device, are tightened with burst bolts, burst ties or other burst elements. The breaking bolts or other breaking elements used are designed in such a way that the breaking force on the hose or pipeline, taking into account the internal pressure, axial and radial load, is greater, i.e. bolts (breaking elements) are designed for less load and rupture first, releasing the valves, which block the flow and thereby prevent rupture of the hose or breakage of the pipeline.

A variant of the technical solution is possible, where the spring is installed on the axis on one side in the spring stop on the piston, and on the other side in the spring stop sleeve, while the latter rests on a guide support and is seated on a sliding sleeve, which is inserted into the guide support, providing translational movements the piston axis in the guide support and the spring stop sleeve. The specified technical solution ensures the sliding of the piston axis in the guide support due to the straightening of the spring, which is installed in the stop sleeve on one side and the stop in the piston on the other side, and the spring presses the piston to the product seals when the coupling is disconnected, ensuring a hermetically sealed overlap of each MAP section.

A possible technical solution is where the piston sleeve centers the cone of the second streamlined cone-shaped piston when connecting sections where there is a groove for the piston sleeve. The specified technical solution ensures the coaxiality of the pistons when connecting two sections of the emergency release clutch, as well as the release of the pistons from each other when the clutch is disconnected, since the piston sleeve freely comes out of the groove of the second piston, and the streamlined shape of the pistons provides less resistance to the flow of the product.

A variant of the technical solution is possible, where the seals between the sections provide a tight connection of the two sections, the product seal ensures a tight fit of the piston when the sections are separated, and the seat ensures the installation or dismantling of the piston with a spring mounted on the axis, a spring stop sleeve and a sliding bushing from the guide support. The specified technical solution ensures a hermetically sealed connection of two MAP sections due to the section seals installed on the saddles. Removable seats provide easy assembly or disassembly of each MAP section, allow pre-installation of the piston with a spring, stop sleeve and bushing into the guide support, provide simple installation and fixation, as well as replacement of the product seal, which, together with the seat, provides a tight connection with the piston and shutoff of flow product.

A technical solution is possible where each section can have internal flanges. The specified technical solution ensures the connection of MAP sections, while options are possible with beveled flanges for installing a clamp, standard flanges for installing breaking elements (bolts) or without flanges, which replace brackets for installing breaking elements.

A possible technical solution is where the connecting element is a clamp consisting of two half-rings with fingers, a disconnect lock and an actuator. The specified technical solution provides a hermetically sealed connection of two sections of the coupling with a clamp. In the event of an emergency, it ensures the separation of two sections of the MAR due to the operation of the actuator and the disconnecting lock.

A possible technical solution is where the connecting element is a burst element, which is, but is not limited to, a burst bolt. The specified technical solution provides a hermetically sealed connection of two sections of the coupling with breaking elements (bolts), which are installed on internal flanges or brackets. In the event of an emergency, it ensures the separation of two sections of the MAP due to the rupture of the rupture element, which is able to withstand less load in comparison with the protected pipeline and ruptures first. In this case, the bursting bolts can be replaced with a polymer tie or using another material, or a bursting pin or bushing, etc. - which can perform a similar function within the given parameters.

A technical solution is possible where the internal connecting flanges of each section have a beveled edge for installing a clamp or flanges for fastening with breaking elements. The specified technical solution provides two options for connecting MAP sections.

A possible technical solution is where breaking elements are installed on brackets in the case of sections without internal flanges. The specified technical solution provides lower cost and is an easier-to-manufacture third option for connecting MAP sections.

A possible technical solution is where each clamp half-ring has at least three internal planes, with at least one spring and gasket installed in the middle plane of each half-ring, and the other two planes are located at an angle corresponding to the bevel of the edge of the connecting flange of each coupling section. The specified technical solution ensures a hermetically sealed connection of two flanges with beveled edges of each coupling section, and the energy of the spring located in each half-ring ensures the removal of the latter from the flanges and separation of the MAP sections, while the gasket prevents freezing and sticking of the spring to the body of the half-rings or to the flanges.

A possible technical solution is where the connection of two half-rings on one side is provided by an axis with a tension-regulating pin, and on the other by a disconnecting lock with a breaking element to form a clamp. The specified technical solution ensures the opening of the clamp in two directions in one plane with mobility around the axis, and also ensures simple assembly of the clamp during operation of the equipment.

A variant of the technical solution is possible, where the guide bracket is installed on the fingers of the clamp half-rings, which are fixed in the guide bracket with a latch and pulled together by a breaking element to form a disconnecting lock. The specified technical solution ensures reliable fixation of the disconnecting lock on the fingers of the clamp half-rings and, when force is applied to the actuator, the breaking of the breaking device is ensured, followed by disconnection of the lock and opening of the clamp half-rings.

A possible technical solution is where the disconnect lock has a pin that is connected to the actuator. The specified technical solution ensures the connection of the disconnecting lock with the actuator.

A technical solution is possible where the actuator ensures disconnection of the disconnecting lock both in the active external control mode and in the passive standby mode. The specified technical solution provides two options for MAP operation: sending a signal to control the MAP by an operator or control device - active external mode, or by tensioning a cable (or other rod) having a fixed length, which is less than the length of the drop-down booms of the pipeline or the length of the hose - passive mode, thereby ensuring protection of pipelines from damage and guaranteed closure of channels on both sides of a disconnected pipeline.

A variant of the technical solution is possible, where the guide bracket has a cone-shaped protrusion on both sides, allowing the half-rings of the clamp to move apart by the fingers and disconnecting the emergency release coupling. The specified technical solution ensures the removal of the clamp half-rings from the flanges of each section, followed by disconnection of the MAP and hermetically sealing the channels on both sides.

A possible technical solution is where the tension of two half-rings with the subsequent installation of a disconnecting lock can be ensured by a removable tie rod. The specified technical solution ensures simple assembly of the MAP with installation of the clamp half-rings on the flanges and fixation of the disconnect lock in the working position.

A variant of the technical solution is possible, where the shock-proof ring, as well as the cable holding the latch, the guide bracket, the half-rings of the clamp, which have fastenings for the cable, prevent damage to the sections after disconnection. The specified technical solution ensures the safety of housings and structural elements after an emergency disconnection of the MAR and a possible fall.

A variant of the technical solution is possible, where the actuator includes, but is not limited to, a cable, while the actuator can be without a drive or with a drive, which can be located remotely outside the coupling or directly on the coupling itself, and in the latter case the cable may not be required and the drive may be hydraulic or pneumatic and/or electric. The specified technical solution provides control of the MAP with a clamp in an active external control mode and in a passive standby mode. In this case, the cable can be replaced with a chain or rope or sling or rod, etc. - which can perform similar functions, as indicated by the phrase “but not limited to.”

A variant of the technical solution is possible, where the housings of the spring stop sleeve and the piston spring stop, installed on both sides, when the spring is compressed, can cover the spring, forming a streamlined shape. The specified technical solution makes it possible to pump the product at a higher speed, closes the spring, however, depending on the product and flow rate, the spring can be opened.

A technical solution is possible where the pipeline connectors on two opposite sides of the coupling can be flanges or threaded connections, and the pipeline can be a solid or bendable pipe, as well as a hose. The specified technical solution ensures the use of MAP as part of any pipeline with any connection.

Brief list of drawings

In fig. 1. shows an emergency release coupling (MAR) with flanges, a connecting element - 1 (a clamp and a disconnect lock (A)) with the possibility of external control;

in fig. 2. MAP is shown without flanges and a connecting element - 2 (breaking elements (bolts installed on brackets (B));

in fig. 3. shows MAR with flanges and connecting element - 2 (breaking elements (bolts installed on flanges (B));

in fig. 4. shows a section of MAP without flanges, bursting elements (bolts) are installed on brackets (B). The locking device with a spring, seat, and seals for options A, B and C are the same;

in fig. 5 shows a top view of the MAP disconnect lock with the possibility of external control (A);

in fig. 6. shows a bracket - a guide for the MAP disconnect lock (A);

in fig. 7. shows the lock of the MAP disconnect lock (A);

in fig. 8. shows the profile of the half ring of the MAP clamp (A)

in fig. 9. shows a section of the MAP disconnecting lock (A), the profile of the half-ring of the clamp and its fit on the flanges with a beveled edge of the connecting sections;

in fig. 10. shows a burst element (burst bolt).

Pos. 1 - MAR building;

Pos. 2 - section 1 of the MAR building;

Pos. 3 - section 2 of the MAP building;

Pos. 4 - connecting element (clamp);

Pos. 5 - disconnect lock;

Pos. 6 - internal connecting flanges;

Pos. 7 - connector to the pipeline (flanges for connecting to the pipeline);

Pos. 8 - connector with pipeline (threaded connection with pipeline);

Pos. 9 - brackets for installing explosive bolts;

Pos. 10 - shockproof ring;

Pos. 11 - actuator (cable);

Pos. 12 - eye - bracket, is a mount for the actuator and can be located on the MAP section or outside the MAP, as an option on the mating flange of the pipeline.

Pos. 13 - connecting element (breaking element);

Pos. 14 - nuts of the burst bolt;

Pos. 15 - piston (locking devices), is a streamlined disc-type shape;

Pos. 16 - saddle;

Pos. 17 - food seal;

Pos. 18 - section seals;

Pos. 19 - seat mounting bolts;

Pos. 20 - guide support;

Pos. 21 - piston bushing;

Pos. 22 - piston axis;

Pos. 23 - spring;

Pos. 24 - spring stop on the piston;

Pos. 25 - sleeve with spring stop;

Pos. 26 - sliding bushing;

Pos. 27 - finger;

Pos. 28 - half ring of the clamp;

Pos. 29 - spring fastening;

Pos. 30 - removable pin;

Pos. 31 - bracket - guide;

Pos. 32 - clamp;

Pos. 33 - cone-shaped protrusion of the guide bracket;

Pos. 34 - pin;

Pos. 35 - fastenings and cables of the disconnecting lock and half-rings of the clamp;

Pos. 36 - flange with a beveled edge of section 1 of the MAP housing (A);

Pos. 37 - flange with a beveled edge of section 2 of the MAP housing (A);

Pos. 38 - axis with tension-regulating pin;

Pos. 39 - spring with gasket.

Implementation of technical solution

In the technical solution, the terms used mean the following concepts:

the transported product is, but is not limited to, oil, light and dark petroleum products, liquid chemical products, liquefied natural gas, gas condensate, boil-off gas and other liquid, gaseous and fluid products;

emergency release clutch (MAR) is a design consisting of two interlocked locking devices that close automatically under the action of a spring mechanism after opening the lock, which is activated by cable tension (standard, STO Gazprom 2-3.4-1255-2021 “Infrastructure for production , storage and shipment of liquefied natural gas. Standing equipment. General technical conditions.");

an articulated pipeline of a loading and unloading installation is, but is not limited to, the design of a hose loading installation, standers, various loading, loading, reloading hoses, manipulators, loading levers for loading the transported product into tankers or other watercraft at oil, chemical, and gas terminals offshore and river ports, at sea between watercraft, at railway and road loading points into railway and road tanks;

connecting element (breaking element) - is part of the MAP structure and is intended to connect two sections of the MAP to ensure the passage of the transported product flow in the pipeline.

The connecting element itself is made in two versions, namely:

- in the form of breaking elements, for example, but not limited to: breaking bolt, breaking tie, breaking pin, etc., which are installed on the internal flanges or brackets of MAP sections and connect them;

- a clamp with a disconnect lock containing a breaking element (breaking bolt), which is installed on the internal flanges of the MAP sections and connects them.

The claimed technical solution for the emergency release clutch is illustrated in Fig. 1-10, which shows the proposed technical solution, which has a housing MAP 1, consisting of two sections 2 and 3, each of which contains locking devices in the form of a disc-type piston 15.

Both sections are connected to each other by a clamp 4 (option A) or burst bolts 13 (options B and C), which are installed on internal connecting flanges 6 or brackets 9, while the locking devices 15 are moved apart, resting against each other through the piston sleeve 21, providing alignment, springs 23 are in a compressed state and thus the pistons are mechanically interlocked. A piston sleeve 21 is inserted and secured into the cone part of the piston on one side of section 2. The piston 15 of section 3 has a groove in the cone for installing the mating part of the piston sleeve 21, ensuring the coaxiality of the pistons when connecting the MAP sections. On the other hand, the piston 15 has a piston axis 22, which is installed in the guide support 20 with preliminary installation on the axis of the spring 23 with the spring resting on the piston 24 - on one side and on the other side with the spring resting on the sleeve 25. Sliding of the piston axis 22 relative to the sleeve and the guide support 20 is provided by a sliding bushing 26.

In particular, in Fig.1. and 5. shows an emergency release clutch with a clamp 4 and a disconnect lock 5 (option A) with the possibility of external control of the actuator 11. The actuator can be located directly on the MAP (from the listed, but not limited to: electric, pneumatic, hydraulic drive) or can be remote - cable, which is controlled (the cable is pulled) by the listed drives located outside the MAP or on the mating flange of the pipeline.

Clamp 4 consists of two half-rings of clamp 28, shown in Fig. 5. and 8. The clamp half-rings, on the one hand, are connected by an axis with a tension-regulating pin 38, Fig. 1, on the other hand, by a disconnecting lock 5. The disconnecting lock consists of a guide bracket 31, installed on the pins 27 of the clamp half-ring, a retainer 32 , installed in the stop of the fingers of the half ring of the clamp and are connected by a breaking bolt 13, which ensures tension of the bracket - guide 31 on the fingers and holding the bracket in this position and the pin 34, which pulls the actuator 11. Each half ring of the clamp has three working planes: in the central plane is located spring with gasket 39, two side planes have an inclination, the plane of which corresponds to the beveled edge of the flange 36 and 37.

Disconnection and hermetically sealing of the pipeline on both sides using a MAP with a clamp (option A) occurs as follows: the actuator 11 pulls the pin 34 installed in the guide bracket 31 with a force that can break the burst bolt 13. The burst bolt breaks and ceases to hold bracket - guide, which releases the fingers of the half rings from the grip and, thanks to the cone-shaped protrusion 33 of the bracket - guide, pushes the fingers apart and, accordingly, removes the half rings of the clamp from the flanges with a beveled edge 36 and 37 of sections 1 and 2 MAP. A spring with a gasket ensures complete removal of the clamp half-rings from the flanges with a beveled edge, which leads to the separation of the 2 MAP sections. The pistons 15 of each section, under the action of the straightening springs 23, push the MAP sections away from each other and hermetically close each MAP section according to the principle of a check valve, pressing against the seal 17 and the seat 16. The half-rings of the clamp, the latch, and the guide bracket, after disconnecting the MAP, are held on the fasteners and cables 35.

The reverse connection of the two sections and bringing the MAP into the working position is ensured by connecting the piston cones with the piston sleeve 21, compressing the two sections, which ensures compression of the springs 23 and transfer of the pistons to the “open” position. The clamp half-rings are placed on flanges with beveled edges 36 and 37 of sections 1 and 2 MAP, a removable pin 30 is installed, which ensures tension on the clamp half-rings, after which a guide bracket 31, a retainer 32 and a new breaking bolt 13 are installed on the pins 27. the removable pin 30 is removed - the MAP is ready for use.

In particular, in FIG. 2. and 3. show an emergency release clutch without the possibility of external control, which is activated when internal pressure increases and/or external axial or radial loads are applied to the pipeline or hose. This functionality is ensured by installing burst bolts 13 on connecting flanges 6 (option B) or brackets 9 (option C). The number of burst bolts and their burst properties are determined by the calculation method. In this case, the load at which the bolts 13 must burst must be greater than the nominal internal pressure of the pipeline and less than the burst pressure of the hose or pipeline, as well as the loads that the pipeline can withstand.

Disconnection and hermetically sealing of the pipeline on both sides using MAP with bursting bolts occurs as follows: under the influence of load, bolts 13 break, which leads to the separation of 2 sections of MAP. Pistons 15 of each section, under the action of straightening springs 23, push the MAP sections away from each other and hermetically close each MAP section according to the principle of a check valve, pressing against the seal 17 and the seat 16.

The return connection of the two sections and bringing the MAP into the working position is ensured by connecting the piston cones with the piston sleeve 21, compressing the two sections, which ensures the compression of the springs 23 and moving the pistons to the “open” position, followed by the installation of new burst bolts 13.

Depending on the requirements for connecting MAP to pipelines or hoses, MAP can be with a flange connection to pipeline 7 or a threaded connection to pipeline 8.

The claimed technical solution, namely MAP, is installed on the hose in front of the connecting coupling as part of a hose installation for loading liquid and gaseous products into tankers.

The declared technical solution of the emergency release coupling allows its use in the design of hose loading installations, loading, unloading, transfer hoses (levers), articulated pipelines, manipulators, standers and other loading and unloading installations for the safe and environmentally responsible shipment of oil, petroleum products, liquids chemical products, liquefied natural gas, gas condensate, boil-off gases and other liquid and gaseous products. MAP provides easy operation with the ability to replace worn elements. The coupling locking devices are mechanically interlocked. The clamp (option A) provides a hermetically sealed connection between two sections of the emergency coupling, which is guaranteed to ensure disconnection of equipment pipelines in emergency situations with the ability to monitor and control, regardless of high and low operating temperatures, icing and cryogenic temperatures of the LNG product.

The connection of two MAP sections with burst bolts (options B and C) provides a hermetically sealed connection, guaranteed separation of equipment pipelines in emergency situations, preventing rupture of hoses and breakage of pipelines, regardless of high and low operating temperatures, icing and cryogenic temperatures of the LNG product. MAR has a minimum working size in the axis, minimal labor intensity during production and operation, which affects the cost of all equipment of which MAR is a part.

Claims (20)

1. An emergency release coupling, made in the form of a cylindrical body with pipeline connectors on two opposite sides, consisting of two sections connected by a connecting element, each section containing a piston with an axis and at least one spring, characterized in that the connecting element contains a breaking element, and in each section there is a piston installed, having a streamlined cone-shaped shape on one side and an axis with a spring stop on the other side, connected to the guide support of the section through a spring mounted on the axis, a spring stop sleeve and a sliding bushing, while in a streamlined cone One of the pistons has a piston sleeve fixed, and in each section there is a seat with seals between the sections, which fixes the product seal, and a shock-proof ring is located on each section and at least one cable is located on one of the sections. 2. Emergency release clutch according to claim 1, characterized in that the spring is installed on the axis on one side in the spring stop on the piston, and on the other side in the spring stop sleeve, while the latter rests on the guide support and is seated on the sliding sleeve, which inserted into the guide support, ensuring translational movements of the piston axis in the guide support and the spring stop sleeve. 3. Emergency release coupling according to claim 1, characterized in that the piston sleeve centers the cone of the second streamlined cone-shaped piston when connecting sections where there is a groove for the piston sleeve. 4. Emergency release coupling according to claim 1, characterized in that the seals between the sections provide a tight connection of two sections, the product seal ensures a tight fit of the piston when separating the sections, and the seat ensures installation or dismantling of the piston with a spring mounted on the axis, a spring stop sleeve and sliding bushing from the guide support. 5. Emergency release coupling according to claim 1, characterized in that each section may have internal flanges. 6. Emergency release coupling according to claim 1, characterized in that the connecting element is a clamp consisting of two half-rings with fingers, a disconnect lock and an actuator. 7. The emergency release coupling according to claim 1, characterized in that the connecting element is a burst element, which is, but is not limited to, a burst bolt. 8. Emergency release coupling according to claim 1 or 5, characterized in that the internal connecting flanges of each section have a beveled edge for installing a clamp or flanges for fastening with breaking elements. 9. Emergency release coupling according to claim 1, or 5, or 8, characterized in that the breaking elements are installed on brackets in the case of sections without internal flanges. 10. Emergency release coupling according to claim 6 or 8, characterized in that each half-ring of the clamp has at least three internal planes, and at least one spring and a gasket are installed in the middle plane of each half-ring, and the other two planes are located at an angle corresponding to the bevel edge of the connecting flange of each coupling section. 11. Emergency release coupling according to claim 6, characterized in that the connection of two half-rings on one side is provided by an axis with a tension-regulating pin, and on the other by a disconnect lock with a breaking element and forms a clamp. 12. Emergency release coupling according to claim 6, characterized in that the guide bracket is installed on the fingers of the half-rings of the clamp, which are fixed in the guide bracket with a latch and tightened with a breaking element, forming a disconnect lock. 13. Emergency release coupling according to claim 6 or 12, characterized in that the release lock has a pin that is connected to the actuator. 14. Emergency release coupling according to claim 13, characterized in that the actuator ensures disconnection of the disconnect lock both in the active external control mode and in the passive standby mode. 15. Emergency release coupling according to claim 12, characterized in that the guide bracket has a cone-shaped protrusion on both sides, which allows the half-rings of the clamp to move apart by the fingers, disconnecting the emergency release coupling. 16. Emergency release coupling according to claim 12, characterized in that the tension of two half-rings with the subsequent installation of a disconnect lock can be ensured by a removable tie rod. 17. Emergency release coupling according to claim 12, characterized in that the shock-proof ring, as well as the cable holding the latch, guide bracket, clamp half-rings having fastenings for the cable, prevent damage to the sections after disconnection. 18. Emergency release coupling according to claim 6 or 14, characterized in that the actuator includes, but is not limited to, a cable, while the actuator can be without a drive or with a drive, which can be located remotely outside the coupling or directly on the coupling itself, in which case in the latter case a cable may not be required, and the drive may be hydraulic or pneumatic and/or electric. 19. Emergency release coupling according to claim 1 or 2, characterized in that the housings of the spring stop sleeve and the piston spring stop, installed on both sides, can close the spring when the spring is compressed, forming a streamlined shape. 20. Emergency release coupling according to claim 1, characterized in that the pipeline connectors on two opposite sides of the coupling can be flanges or threaded connections, and the pipeline can be a solid or bendable pipe, as well as a hose.