RU2810663C1 - Fire extinguishing and waterjet cutting installation with high pressure water - Google Patents

Abstract

FIELD: fire extinguishing.

SUBSTANCE: installation for extinguishing fires and waterjet cutting with high pressure water belongs to the field of mechanical engineering, in particular to equipment for extinguishing fires and waterjet cutting with high pressure water, it is intended for extinguishing fires at various objects, cutting holes in obstacles, and can also be used for washing surfaces with water and water solutions when eliminating the consequences of accidents and when carrying out disinfection and decontamination work. The installation has a unit for supplying water and water mixtures, a unit for abrasive powder vessels, a manual barrel for supplying water and water mixtures with replaceable nozzles, and a control system. Due to the fact that the unit for supplying water and water mixtures has a volumetric piston pump with a hydraulic drive, carried out from the vehicle’s hydraulic station, an autonomous hydraulic station or a main hydraulic drive, high durability and reliability of the technical solution as a whole is ensured.

EFFECT: due to the fact that the abrasive powder vessel assembly has two vessels connected by a two-position four-line valve, continuous operation of the installation is ensured.

1 cl, 4 dwg

Description

TECHNICAL FIELD.

The present invention relates to the field of fire and rescue equipment, in particular, to equipment for extinguishing fires and waterjet cutting with high pressure water. The present invention is intended for extinguishing forest fires; fires at industrial and residential facilities, on automobile, aviation, railway transport, on sea and river vessels; in addition, it can be used for washing surfaces with water and aqueous solutions when eliminating the consequences of accidents and road accidents; when carrying out disinfection and deactivation work, as well as for waterjet cutting of holes in obstacles.

BACKGROUND OF THE ART.

A well-known fire extinguishing installation with waterjet cutting “Cobra” produced by Cold Cut Systems AB (Sweden).

This unit is described at www.coldcutsystems.com.

It is known that a fire extinguishing installation with waterjet cutting “Cobra” consists of the following elements:

• gasoline four-stroke engine;

• two gearboxes;

• foam pump-mixer, allowing to obtain a solution;

• abrasive container made of stainless steel;

• two high-pressure plunger-type pumps;

• water container, made of polymer material;

• metal fuel canister for gasoline;

• foam concentrate container made of polymer material;

• a reel with a high-pressure hose for cutting with a hose reserve of 80 m and a quick-release connection, equipped with an electric drive;

• barrel cutter with a rotary stop for cutting direction and a battery-powered radio control module;

• monitoring and control system.

Fire extinguishing is carried out by a team of two people: an operator and a lineman.

The disadvantage of this installation is the use of high-pressure pumps, which are driven by an autonomous engine. In this case, the rotating shaft causes the pump piston(s) to reciprocate through a mechanical transmission, which in turn leads to a decrease in the service life of the pumps. Also, the Cobra fire extinguishing installation has only one container for abrasive, which leads to a shortened period of operation of the installation when waterjet cutting equals the amount of abrasive. When all the abrasive has been exhausted from the tank to continue firefighting and waterjet cutting, it is necessary to stop all work to fill the tank with abrasive.

In the Russian Federation, the “Gyurza combined waterjet cutting and fire extinguishing installation” produced by Kalancha LLC is known.

In accordance with the Program for the re-equipment of units of the Ministry of Emergency Situations of Russia with modern models of technology and equipment for 2011-2015 and by order of the Department of Fire and Rescue Forces of the Ministry of Emergency Situations of Russia, scientists from the Academy of the State Fire Service of the Ministry of Emergency Situations of Russia carried out development work “Mobile complex for extinguishing fires and carrying out emergency rescue operations” works on objects with structures made of high-strength materials" (Authors: Teterin I.M., Aleshkov M.V., Emelyanov R.A., Ploskonosov A.V., Serenkov A.S., VNIIPO EMERCOM of Russia, GC "Kalancha") .

It is a multifunctional complex consisting of a basic all-wheel drive chassis, a fire superstructure and a water installation. The machine has a container with abrasive substances, a reel with a sleeve, and a diesel engine with a liquid cooling system.

Work on the complex is provided by a team of three people: a mechanic; a fireman who directly extinguishes the fire and a specialist who supplies water from an external source.

The complex is completely autonomous; it can be installed and transported on a trailer or by truck.

Information taken from open Internet sources:

-https://academygps.ru/nauka-5/razrabotki-i-nauchnye-dostizheniya-granty-49/pozharnaya-i-avariyno-spasatelnaya-tekhnika-1370/gyurza-1389;

https://www.kalancha.ru/catalog/ustanovka_gidroabrazivnoy_rezki_i_pozharotusheniya_gyurza

A disadvantage of the Gyurza fire extinguishing installation is also the presence of only one container for abrasive, which leads to a shortened period of operation of the installation when waterjet cutting equals the amount of abrasive. When all the abrasive has been exhausted from the tank to continue firefighting and waterjet cutting, it is necessary to stop all work to fill the tank with abrasive.

The closest analogue (prototype) is the technical solution disclosed in the application for invention No. 2016118272 “Method of fire extinguishing and waterjet cutting of building materials and a device for its implementation” priority date 05/11/2015, publication date 11/16/2017 Bull. No. 32.

The following claims are described.

1. A method of fire extinguishing and waterjet cutting of building materials, including the preparation of a water-suspension abrasive, cutting holes with the above-mentioned abrasive in a burning structure of a closed volume, followed by supplying a high-speed jet of fire extinguishing agent through the cut hole into the fire zone, characterized in that when cutting due to the supply modes and design profile nozzle forms a compressed waterjet jet at a pressure of at least 30 MPa at a speed of at least 200 m/s, and the degree of compression of the jet is determined by the expression:

ε=(d _page /d _nozzle ) ² = from 0.61 to 0.68;

where ε is the degree of compression of the jet;

d _str - diameter of the compressed jet after exiting the nozzle, m;

d _nozzle - internal diameter of the end of the profile nozzle, m;

in this case, for the suspension liquid, abrasive powder from copper smelting waste (cooper slag) with a dispersion of 0.5 to 3 mm or abrasive from electrocorundum with a dispersion of 0.16 to 2 mm is used, and fire extinguishing is carried out by supplying a water-foam fire extinguishing jet at a speed of at least 180 m/s at a pressure of at least 25 MPa with the formation of water vapor and water aerosol with a dispersion of no more than 150 microns with a maximum distribution function of aerosol particles ranging from 70 to 100 microns, and a synthetic hydrocarbon foaming agent is used as a surfactant for the water-foam liquid.

2. A device for fire extinguishing and waterjet cutting of building materials, including a high-pressure pump with a pressure regulator driven by an internal combustion engine, a water tank, a container with a foaming liquid and a container with water-suspension abrasive, connected by a water line with a collector and with an operating mode control system and flow regulators of the fire extinguishing or waterjet mixture, characterized in that the said containers are made on the basis of hydraulic pressure accumulators with needle flow regulators controlled by actuators. The working nozzle for the cutting mode is made with a profile that provides the effect of increasing the power coefficient of the jet leaving the nozzle in relation to the power of the incoming jet from 4 to 4.5 times, and the connecting water main has valves for emergency drainage of foaming and water-abrasive liquid.

The disadvantage of what is described in the application for invention No. 2016118272 is the use of high-pressure pumps driven by an internal combustion engine, as well as the presence of only one container with water-suspension abrasive.

DISCLOSURE OF THE INVENTION.

The problem underlying the present invention is to create a design for a fire extinguishing and waterjet cutting installation with high pressure water, free from the indicated disadvantages inherent in technical solutions representing the prior art.

This problem is solved due to the fact that the fire extinguishing and waterjet cutting installation, consisting of a water and water mixture supply unit, an abrasive powder vessel unit, a manual water and water mixture supply barrel with replaceable nozzle attachments, a control system has a volumetric piston pump with a hydraulic drive from the hydraulic station of a vehicle, an autonomous hydraulic station or a main hydraulic drive, while the assembly of abrasive powder vessels consists of a frame on which two vessels are installed, having an opening with hermetically sealed plugs and pressure gauges, connected by a two-position four-line valve, while supplying a mixture of water and abrasive powder into the hand barrel is carried out by a hydraulic cylinder with remote electrical control, and connecting one of the vessels to the supply of water and abrasive powder into the hand barrel and at the same time disconnecting the other vessel from the flow of water into it is done by manually switching the handle.

The technical result of the invention is that:

- high durability and reliability of the high-pressure pump, and therefore the entire product as a whole, is ensured due to the fact that a volumetric piston pump is used, which converts the pressure of the hydraulic fluid (oil) of the hydraulic system into higher water pressure;

- a continuous flow of abrasive into the appropriate containers is ensured, which means fire extinguishing and waterjet cutting are ensured with the least amount of time due to the fact that the installation has an assembly of abrasive powder vessels, consisting of a frame on which vessels are installed that have holes with hermetically sealed plugs and pressure gauges, while switching the vessels is carried out by a handle, water is supplied from the high-pressure pump to the vessels through a high-pressure hose, and the supply of a mixture of water and abrasive powder to the manual barrel is switched on by a hydraulic cylinder with remote electrical control.

- the scope of application of the installation is expanding not only as a means for extinguishing fires and water-jet cutting of holes in obstacles, but also as a means of washing with high-pressure water when eliminating the consequences of accidents and traffic accidents; when carrying out disinfection and deactivation work by installing nozzle attachments for a manual barrel for supplying water and a water mixture of various profiles.

The invention is illustrated by description and example of practical use.

The essence of the invention is illustrated by drawings.

In fig. Figure 1 shows the placement of the water and water mixture supply unit (view from the operator’s workplace).

In fig. Figure 2 shows the placement of the abrasive powder vessel assembly (view from the operator’s workplace).

In fig. Figure 3 shows a side view of a manual barrel for supplying water and the water mixture.

In fig. Figure 4 shows the replaceable nozzle attachment for the hand barrel (side view).

The fire extinguishing and water jet cutting installation with high pressure water is mounted on a vehicle (car, trailer, self-propelled vehicle) or stationary. The power drive of the installation is hydraulic, carried out from the vehicle’s hydraulic station, autonomous hydraulic station or main hydraulic drive.

The installation for extinguishing fires and waterjet cutting with high-pressure water consists of the following main parts: a unit for supplying water and water mixtures, an assembly of abrasive powder vessels, a manual barrel for supplying water and a water mixture with replaceable nozzles, and a control system.

The unit for supplying water and water mixtures (Fig. 1) has a frame 1 on which hydraulic control equipment 2, a high-pressure pump 3, a reel 4 with a high-pressure hose (HPR) 5 are installed.

Reel 4 has a rotation drive - hydraulic motor 6.

RVD 5 at one end 28 is connected to the tap for supplying abrasive powder from vessels 19 and to the outlet of the high-pressure pump 3, and at the other end it has a quick-release coupling (QCU) 7 for connecting a hand barrel.

Water from some source is supplied to the inlet of the high-pressure pump 3 through a pipe 8 with a connecting head and a filter 9.

A special liquid solution of any substances, for example, a foaming agent or wetting agent for extinguishing a fire, a washing, disinfecting or decontaminating solution, can be supplied to the inlet of the high-pressure pump 3 through a pipe 10 with a connecting head and a filter 11 from some source. There is a dispenser 12 of a special liquid solution.

There is a water pressure regulator 13 at the pump outlet, a water pressure gauge 14 at the pump outlet, and a coil rotation speed regulator 15.

The assembly of abrasive powder vessels (Fig. 2) has a frame 16 on which vessels for abrasive powder 17 and 18 are installed.

A two-position four-line valve 19 is used to supply a mixture of water and abrasive powder into the hand barrel, as well as to connect one of the vessels to the supply of water and abrasive powder to the hand barrel and, at the same time, to disconnect the other vessel from the flow of high pressure water from the pump and connecting it with the atmosphere.

The supply of a mixture of water and abrasive powder to the manual barrel is switched on by a hydraulic cylinder 20, which has a remote electrical control.

Switching of vessels (connecting one of the vessels to the supply of water and abrasive powder to the hand barrel and, at the same time, to disconnect another vessel from the flow of high-pressure water from the pump and connecting it to the atmosphere) is carried out manually with handle 21

The vessels have holes on top for loading abrasive powder into the vessels. The holes are hermetically sealed with plugs 22 and 23.

There are pressure gauges 24 and 25 to monitor the pressure inside the vessels.

Water is supplied from high pressure pump 3 to vessels 17 and 18 through RVD 27.

The supply of high-pressure water, a mixture of water and abrasive powder, and an aqueous solution of special substances into the manual barrel, through a reel, is carried out through RVD 28.

The manual barrel for supplying water and the water mixture (Fig. 3) has a steel pipeline 29, one end of which has a coupling 30 for connection through the coupling 7 to the hose 5, and the other end has a coupling 31 for connecting one of the nozzle attachments.

The hand barrel has a pistol-type handle 32, an adjustable handle 33, a shoulder rest (butt) 34.

The manual barrel has a control panel, including a replaceable battery, an electronic microprocessor, a radio transmitter-radio receiver, LED indicators, control buttons, a trigger for supplying water or a water mixture 36.

Replaceable nozzle attachments for the hand barrel (Fig. 4) have a coupling bar 37 for connection to the coupling bar 31 for the hand barrel. Replaceable nozzle attachments have different functional purposes and design features. The most commonly used nozzle attachments: nozzles for waterjet cutting of round holes and extinguishing 38, extinguishing foam nozzles 39, punch barrel for extinguishing 40, nozzles for high-pressure water washing, extinguishing, disinfection, decontamination with a compact jet 41, nozzles for washing, extinguishing, disinfection, decontamination with a spray jet 42. In addition, other nozzles can be used, for example, nozzles for waterjet cutting of linear holes and extinguishing, nozzles for extinguishing peat fires.

The control system of the fire extinguishing and waterjet cutting installation with high pressure water, in addition to the control panel of the manual barrel 35, has an electronic microprocessor, a radio transmitter-radio receiver, LED indicators, control buttons, and a cable remote control.

IMPLEMENTATION OF THE INVENTION.

The operation of the fire extinguishing and waterjet cutting installation with high pressure water is carried out as follows.

After turning on the hydraulic power drive, installing the corresponding nozzle-nozzle on the hand barrel, switching on the corresponding operating mode using the control system when pressing the trigger 36, high-pressure water from the pump, through the hose pump, flows from the nozzle-barrel to the extinguishing, washing or processing object. High pressure water can be with the addition of abrasive powder, or the addition of a special solution, or without additives.

The invention of this design is successfully carried out by Prioritet LLC. The launch into production took place in May 2012.

Claims (1)

Fire extinguishing and waterjet cutting installation, consisting of a unit for supplying water and water mixtures, an assembly of abrasive powder vessels, a manual barrel for supplying water and a water mixture with replaceable nozzles, a control system, characterized in that the assembly of abrasive powder vessels consists of a frame, on in which two vessels are installed, having holes with hermetically sealed plugs and pressure gauges, connected by a two-position four-line valve, a hydraulic cylinder with remote electrical control and handles for switching vessels, while the water and water mixture supply unit has a frame on which hydraulic control equipment, a volumetric piston pump with hydraulically driven from a vehicle hydraulic station, an autonomous hydraulic station or a main hydraulic drive, a reel with a high-pressure hose, with one end of the high-pressure hose connected to the valve for supplying abrasive powder from the vessels and to the outlet of the volumetric piston pump, and at the other end it has a quick-release a connection made with the possibility of connecting a manual barrel, while the hydraulic cylinder with remote electrical control is made with the ability to supply a mixture of water and abrasive powder into the manual barrel, while the handle for switching vessels is made with the ability, by means of its manual switching, to connect one of the vessels to the supply of water and abrasive powder into the hand barrel and at the same time turn off the other vessel from the flow of water into it.