Water jet nozzle

FIELD: mining.

SUBSTANCE: invention is related to treatment of item surfaces with water jet. Water jet nozzle comprises body with the first nozzle head arranged on its front end, besides axis of outlet hole in the first nozzle head in plane of front end of body has an angle of inclination to axis of body rotation and is displaced relative to axis of rotation, and the second nozzle head, arranged on body side surface, besides axis of outlet hole of the second nozzle head is inclined to axis of body rotation to the side of its front end. Body comprises device for flow interruption, which comprises disk made in the form of sleeve, bottom and side walls of which have slots in the form of sectors and small turbine that represents impeller made of hub and blade crown, for instance with four blades arranged at an angle to nozzle axis. Disk and small turbine are fixed on axis, which it in turn is installed in sliding bearings, one of which is fixed in nozzle body from the side of front end, the other one - in central part of support, having shape of ring with ribs of rigidity, with external radius equal to radius of bore, where it is installed. Support is fixed with threaded ring.

EFFECT: improved efficiency of water jet nozzle due to dynamic action of pulsating water jets at material.

4 dwg

 

The invention relates to surface treatment of articles by a jet of high-pressure fluid.

Known nozzle jetting [A.S. USSR №648734, MKI IS 45/00. The jetting nozzle. - 1979]made in two, forming an annular channel, coaxially arranged pipes and valves intended for pulsating fluid outflow and water hammer, and in the walls of the branch pipes provided with channels and holes tiers and forming ejectors, and the valve is located on the periphery of the outer pipe.

The disadvantage of this device is its low productivity, due to exposure to the material only axial flow, which leads to the small surface area of the material.

The prototype of the invention is jetting nozzle [RF Patent №2165020, MKI7AS 45/00. Jetting nozzle. - 2001], comprising a housing with allow head placed on its front end face, and a second nozzle head located on the side surface of the housing. The axis of the outlet of the first to allow the head in the plane of its front end offset from the axis of rotation of the body at a certain distance and inclined to the axis of rotation of the housing at an angle (5-30)°, and the axis of the outlet to allow the second head is tilted to the axis of rotation of the body towards its front that is CA at an angle (50-80)°. On the side surface of the case is made of at least two nozzle heads.

The disadvantage of this invention is its low productivity, due to exposure to the material solid liquid jets, resulting in the fracture of the material occurs mainly due to its static compression.

The technical task of the present invention is to improve the performance of the jetting nozzles due to dynamic effects on the material of pulsating liquid jets.

The problem is solved in that the jetting nozzle, comprising a housing, has two nozzle heads, one of which is placed on its front end face and the second on the side of the case. For the formation of pulsating jets of fluid in the channel body is the device interrupts the flow that contains the disk mounted on the axle, and made in the form of glass, bottom and side walls of which are slotted in the form of sectors. To bring the disk-breaker flow into rotation on an axis fixed impeller constituting the impeller comprising a hub and a blade of the crown, for example, with four blades arranged at an angle to the axis of the nozzle. The axle on which the drive and impeller, mounted in bearings, one of which is fixed in the body of the nozzle with store the HN front end, the other is in the Central part of the support having the shape of rings with ribs, with an outer radius equal to the radius of the groove in which it is installed. Bearing fixed in the groove of the threaded ring. In the process of working fluid from a high pressure pump into the body of the nozzle, causes the rotating impeller, resulting in a rotation of the axle with disk-breaker that sector which occasionally overlap of the inlet nozzles. As a result, from the front and side nozzles expire pulsating liquid jet impinging on destroying the array. The intensity of hydrarthrosis enhanced by the dynamic influence of pulsating jets in the array, creating a network of microcracks, which reduces the strength characteristics of the material. For channel formation in the processed array case the nozzle is driven into rotation around its own axis and has an axial flow in the direction of destroying the array.

The invention is illustrated by drawings, where figure 1 shows a General view of a jet nozzle in the context and scheme impact on the material flowing from located on the end and side surfaces of the body of nozzle heads, fluid flows, figa-in - sections a-a, b-B, In figure 1.

Jetting nozzle includes a housing 1 with two deployme heads, the first with Plava head 2 is placed on its front side, 3 in the corresponding hole 7 and is intended for the formation of a pulsating jet 18, which destroys the material 16 with the formation of the Central channel 17, the axis of the outlet to allow the head 2 in the plane of the front face 3 of the housing 1 has an angle of inclination to the axis of rotation of the housing and offset from the axis of rotation, and the second jet head 4 is placed on the lateral surface 5 of the housing 1 in the corresponding hole 8 and is intended for the formation of a pulsating stream 19, which acts on the side surface of the Central channel 17, finally breaking the surface of the material, and the axis of the outlet to allow the second head 4 is inclined to the axis of rotation of the body towards its front end 3. In case 1, the device interrupts the flow to provide a pulsating fluid outflow from the nozzle heads, consisting of a disk 13, is made in the form of glass, bottom and side walls of which are slotted in the form of sectors, and the impeller 10, which represents an impeller comprising a hub and a blade of the crown, for example, with four blades arranged at an angle to the axis of the nozzle. The disk and the impeller is fixed on the axis 12, which is mounted in bearings 11, one of which is fixed in the body of the nozzle 1 from its front end, and the other in the Central part of the support 14 having the shape of rings with ribs, with an outer radius equal to the radius p is ochocki 6, in which it is installed. Bearing 14 mounted in the groove 6 of the nozzle body fixed screw ring 9.

The described device is as follows: the liquid from the pump through the tube 15 enters the body of the nozzle 1, where it spins the impeller 10, which is fixed on the axle 12 mounted in bearings 11, one of which is located in the body of the nozzle 1 from its front end face 3, and the other in the Central part of the support 14 in the groove 6 of the nozzle body and is fixed by a threaded ring 9, with a speed of W1. The disk 13 mounted on the axis 12, is made in the form of glass, bottom and side walls of which are slotted, periodically closes the openings 7 and 8, creating pulsating fluid flows: one in the first nozzle head 2 located on the front end face 3, and the other to the second nozzle head 4 located on the side surface of the housing 5. Formed pulsating stream 18 flowing from the first to allow the head 2, carries out the destruction of the surface material 16 by forming the Central channel 17 due to the axial movement together with the nozzle at a feed speed Vzand rotating with angular velocity W2tube 15. Pulsating jet 19 flowing from the second to allow the head 4, acts on the side surface strmilov the frame of the Central channel 17, producing the final destruction of the processed surface of the material and its removal.

The impact on the surface of the material pulsating stream formed with the disk, made in the form of a Cup with slots, allows to increase the productivity of destruction, as it happens due to the emergence and development of micro-cracks that cause separation of fine particles from the main mass of material, and the mechanical effects of high-speed fluid flow and hydraulic impacts promote the penetration of the liquid into the crack, which greatly reduces the strength of the material in the zone of interaction of the jets with destructible array.

Thus, the combined effect of pulsating jets on the surface of the material improves the performance of the surface treatment material.

Jetting nozzle, comprising a housing with a first allow head placed on its front end face, and the axis of the outlet of the first to allow the head in the plane of the front end of the body has an angle of inclination to the axis of rotation of the housing and offset from the axis of rotation, and to allow the second head located on the side surface of the shell and the axis of the outlet to allow the second head is tilted to the axis of rotation of the body towards its front end, otlichayas the same time, in case the device interrupts the flow that contains the disk, made in the form of glass, bottom, and side walls which are slotted in the form of sectors and impeller, representing the impeller comprising a hub and a blade of the crown, for example, with four blades arranged at an angle to the axis of the nozzle, the drive and the impeller is fixed on the axis, which, in turn, mounted in bearings, one of which is fixed in the housing of the nozzle from the front end, another in the Central part of the support having the shape of rings with ribs, with an external radius equal to the radius of the groove in which it is installed, with this reliance fixed threaded ring.



 

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Water jet nozzle // 2374448

FIELD: mining.

SUBSTANCE: invention is related to treatment of item surfaces with water jet. Water jet nozzle comprises body with the first nozzle head arranged on its front end, besides axis of outlet hole in the first nozzle head in plane of front end of body has an angle of inclination to axis of body rotation and is displaced relative to axis of rotation, and the second nozzle head, arranged on body side surface, besides axis of outlet hole of the second nozzle head is inclined to axis of body rotation to the side of its front end. Body comprises device for flow interruption, which comprises disk made in the form of sleeve, bottom and side walls of which have slots in the form of sectors and small turbine that represents impeller made of hub and blade crown, for instance with four blades arranged at an angle to nozzle axis. Disk and small turbine are fixed on axis, which it in turn is installed in sliding bearings, one of which is fixed in nozzle body from the side of front end, the other one - in central part of support, having shape of ring with ribs of rigidity, with external radius equal to radius of bore, where it is installed. Support is fixed with threaded ring.

EFFECT: improved efficiency of water jet nozzle due to dynamic action of pulsating water jets at material.

4 dwg

FIELD: oil and gas industry.

SUBSTANCE: method for development of methane hydrates is based on their breaking by water jets at a temperature of more than 285K with the rate more than 1 m/s in a pulse mode with a frequency in the range from 1 up to 200 Hz, gasification and lifting from the seabed. A device for development of methane hydrates contains a floating device, handling equipment, a power generating unit, pipelines, a control unit and an underwater methane hydrate development unit in which body there is an installed infrared heater, a water-jet monitor with pressurised water feed equipment and a gas bleeder.

EFFECT: improvement of energy efficiency for underwater development of methane hydrates and their lifting to the floating device.

2 cl, 1 dwg

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