Ejector-nozzle device

FIELD: mechanical engineering.

SUBSTANCE: invention relates to production of ejector-nozzle devices for hydrojet engines. Proposed device contains fixed unit-faceplate with axially sectionalized spaces, each connected with mains with liquid or gas under pressure by channels and holes. Movable unit contains multinozzle head with shank-shaft installed in central hole of faceplate. Movable subassembly contains flexibly deformable bushing with screw-shaped slots, and head nozzles are provided with tube tips installed for rotation. Shank-shaft is mechanically coupled with electric or hydraulic drive. Ring chamber arranged in one of sectionalized spaces is connected with mains to supply gaseous explosive mixture. Blind hole-socket is found on faceplate at one diameter with other holes, being connected with ring chamber by channel on way of which check valve with primer and cutoff-meter in form of rectangular spring-loaded plate with fitted in jet are built in. Nose of meter is in sliding contact with face surface of head which is provided with segment slots on one diameter with meter, depth of said slots corresponds to opening-closing stroke of meter jet hole. Device in form of monoblock is mounted in fairing housing compartment to which thin walled bushing - ejector tube is connected by means of pylons. Walls of said tube are made of screw-shaped relatively engaging tape strips and they form contraction-diffuser outline of tube whose discharge end face is mechanically coupled with ring hydraulic cylinder. Fairing is secured on watercraft by means of pylon. Power supply main lines of device are connected with stationary power supply sources and watercraft control panel through tunnel channel in pylon.

EFFECT: increased efficiency.

8 dwg

The invention relates to mechanical engineering, in particular to the production of injection and nozzle apparatus for hydro jet engines (RDTs), mainly surface craft.

Known hydro - jet nozzle apparatus of shot-blasting-shot blasting chambers (AS, BI No. 38, 1981; AS, BI No. 19, 1984; AS, BI No. 12, 1990; AS, BI No. 9, 1993; U.S. Pat. 2106236 BI No. 7,1998,).

Known devices contain a fixed node that represents a faceplate with an annular cavity and a Central axial bore and channels for supplying gas or liquid under pressure into the cavity. In addition, the composition of the fixed node is provedeniya sleeve confused form (A.S. 1799717, BI No. 9, 1993). A mobile node apparatus is mnogozubkovoy head in the form of a revolving drum with a Central shaft-shank, with the possibility of rotation of the actuator installed in the Central axial hole of the faceplate.

Also known are devices that contain a cylindrical, axially-symmetrically located relative to each other cavities, which are equipped with Windows and channels with ejector trunks forming a cavity, the orifices of the outer cylinder (wheel abrasive disc) are output holes, and both rows of holes of the inner cylinder coincide with the centers of radial channels to the UGA (A.S. 1636202, BI No. 11, 1988; U.S. Pat. 2188120, BI No. 24, 2002), Bviously and other Structure of the detonation front in gases", ed. Sibir. the CTD. An SSSR, 1963

From a group of known inventions closest analogues are essentially A.S. 1799717 and U.S. Pat. 2188120 jointly used in the claimed injection and nozzle device.

Known analogues: injection and to allow the device and the device ensures the formation of a high-speed liquid-gas pulsating flow and together with their main characteristics can be taken as a prototype of the proposed injection and nozzle apparatus according to a new destination.

An object of the invention is to increase the efficiency of the device by increasing the ballistic characteristics of high-speed liquid-gas pulsed ejection of the stream.

The technical result is achieved due to the fact that injection and to allow the apparatus, comprising a fixed node, the face-plate, provided with axially partitioned cavities, each of which through channels and holes connected to the mains gas or fluid under pressure, and a mobile node contains mnogozubkovoy head with shank-shaft connected to the actuator and mounted in the Central hole of the faceplate, and mobile nodes include providepulmonary sleeve with spiral grooves and the receiver nozzle mnogomodovoi head with the possibility of rotation, the difference is that the shank shaft kinematically connected with electric or hydraulic drive, and in one of the partitioned cavities posted annular chamber, connected to a line supplying a gaseous explosive mixture in the faceplate, on the same diameter with the other her holes, has a blind hole - a socket connected with the annular chamber channel which integrated non-return valve with pilot and cutter dispenser in the form of a rectangular spring plate, which is built into the nozzle, with the nozzle of the dispenser is in the contact-sliding coupling with the frontal surface of the head, which the same diameter with dispenser made grooves of segmental form, the depth of which corresponds to the course of opening and closing the orifice of the nozzle of the dispenser, in addition, the apparatus in the form of a monoblock is mounted in the compartment of the hull fairing, which through pylons attached thin-walled sleeve, which represents an ejector shaft, the walls of which are made of spiral vzaimodopolnjaemy tape strips and thermoabrasion confused-diffuser contour, the exhaust end of which is kinematically connected with the annular cylinder, the fairing through the pylon attached to the craft, energomontaj line apparatus connected to the stationary energistic what IKI and remote control on boats through the channel tunnel in the pylon.

Figure 1 shows a General view injection and nozzle Assembly of the apparatus; figure 2 is an enlarged view of a layout diagram of the apparatus; figure 3 is a section a-a from figure 2; figure 4 - cross section b-B from figure 2; figure 5 is a section b - b from figure 2; figure 6 - cross section G-G figure 5; figure 7 - cross section d-D with 6; Fig - type E figure 1.

Injection and to allow the apparatus 1 is asymmetrically secured inside the fairing 2, which by means of the pylon 3 and the rod 4 is attached to the boat 5. Body fairing 2 through radial pylons 6 fixed ejector barrel 7 confused-cone shape, consisting of a spiral provideproperty vzaimodopolnjaemy strip 8 petals.

The device 1 consists of faceplate 9 axially partitioned cavities 10, 11 (material: stj), the cavity 10 is a ring with a flange fixed to the cavity 11 of the faceplate 9 and his second flange, through the adapter 12 with flanges connected to the drive flange 13 of execution, which is equipped with a thyristor unit of speed, mounted on the remote control boats 5.

Assembly stationary node is a monoblock, which by means of split rings 14, 15 fixed to the body of the fairing 2 (case material: Art. H NT), which simultaneously perform the function of watertight bulkheads.

Moving the green apparatus 1 is mnogozubkovoy head 16 (material: Art. H WNMF) in the form of a revolving drum provided with a shank-shaft 17, which face the guide-flange mounted in the annular slot of the faceplate 9 and the shank-its shaft movably connected with the sleeve 18 and kinematically connected with the drive shaft 13 by a coupling 19.

The nozzle 20 of the head 16 provided with a receiver nozzles 21, which are mounted in radial slots with the possibility of rotation. Flanged connector cavities 10, 11 there are three oval-pie window 22. In the cavity 10 at the same time her body is axisymmetric curly camera 23 with ejector shafts 24, which are tightly connected with the holes 25 of the gear 9 and the thickness of the faceplate 9 smoothly into an oval shape. Cavity 10, 11 are communicated between the Windows 22 and with an oval hole 26 of faceplate 9. The cavities 10, 11 connected to the line 27 from the fluid (water) under pressure.

Curly camera 23 is connected to line 28 of compressed air under pressure. In the cavity 11 is placed an annular chamber 29, which in the axial and radial directions is fixed elastic plates in the form of separators.

In plate 9 on the same diameter with the holes 25, 26 from the junction with the head 16 is made blind hole slot 30, which is connected with the annular chamber 29 channels 31, 32, while the junction of the channel 31 and the chamber 29, issue lnen through elastic adapter. Technological openings with plugs to run channels 31, 32 not shown in the figure; the adapter shown conventionally.

In the channel 32 in the zone of the slot 30 integrated non-return valve 33 with the igniter 34 (piezo, running from the valve stroke of the valve 33, shown conventionally), the dispenser 35 (material: Art. H G) with the nozzle 36, the dispenser 35 is spring-loaded and provided with a bore in which is mounted the nozzle 36. Spout spout 35 in the form of the Cam coincides with the groove 37 segmental shaped head 16. While the depth of the groove 37 is equal to the hole diameter of the nozzle 36. Due to the fact that the diameter of the jet is chosen empirically, the grooves 37 are made in removable liners (dashed).

The annular chamber 29 is connected to line 38 for supplying gaseous explosive mixtures (DHW) in the form: O₂+H₂+Not in the ratio 3:1:8.

Ejector shaft 7 made of provideproperty vzaimodopolnjaemy strip 8 petals (steel 65G), sequential, articulated installed on the axes 39 and slit-like slots 40 U-shaped overlapping each other along the length of the overlap (overlap indicated by the dotted line).

After Assembly, the barrel 7 test modes of the reciprocating stroke and stability of axisymmetric diametrical size at the booth.

The Radome 2 is attached mnogoshagovyi annular hydraulic cylinder 41, the piston rods of which poda dynany to the support ring 42 with rods 43, which is kinematically connected with the sides 44 of the barrel 7, the authenticated on the stand. The input slice shaft 7 is attached to the body of the fairing 2 through pylons 6. Highway 45 of the hydraulic cylinder 41 is connected through the tunnel pylon 3 to the oil pump on boat 5. The supply of oil under pressure is carried out with the remote control boats 5.

Injection and to allow the apparatus operates as follows.

The operation of the apparatus 1 installed on boat 5 by means of the pylon 3 and stem 4, is made with the remote control supplied with visual equipment and control. The remote includes power El. the actuator 13 and thyristor unit; as a result, through the clutch 19 and the shank - of the shaft 17, mounted in the sleeve 18 receives the rotation mnogozonovaya head 16. Enable flow of fluid under pressure (P=2,5...3;0 HPa), which is supplied through line 28 into the cavity 10 and further through the oval-pie window 22 into the cavity 11 and the hole 26 of faceplate 9, and at the moment of passing the inlet nozzle 20 of the head 16 is the cutoff hydroprobe. In the following superposition of compressed gas (atmospheric air) (P=...4,0 3,0 HPa), when you enable the remote line 27 enters curly chamber 23 and then through the barrel of the ejector 24 in the hole 25 of the gear 9. The result is increased speed hydroprobe in the nozzle channel 20. To follow is her superposition of hydroprobe gets further acceleration, as a result of chemical decomposition reaction of the explosive combustion of gaseous explosive mixtures: O₂+H₂+He, which (when enabled the controller) is supplied under pressure (P=1,2...1,5 MPa) in the ratio of 2.5:1:8 through line 38 into the annular chamber 29 and then the channel 32 through the hole in the spout 35 with the nozzle 36, the mixture is then DHW passes through the channel with non-return valve 33 and into the slot 31 that is configured for a specific pressure valve 33 closes the channel, after which triggered piezoceramic 34, the mixture DHW is supplied through the dispenser only 35 at the time of the full entrance spout spout 35 into the groove 37 of the head 16. The calibration hole of the nozzle 36 is produced at the stand in Broncemar to assign the optimal portion of the charge mixture.

The released energy DHW after explosive combustion is converted into a mixture of hydrogen, water vapor and helium in the ratio 1:2:8. In the front of the blast wave one part oxygen ˜1/6 to the common part is used from the "tail" of the air charge 2-stage acceleration hydroprobe and enters into a chemical reaction of decomposition of the mixture DHW, what is the overall ratio (2,5+0,5):1:8. Moreover, the frontal wave simultaneously campfires "tail" of the 2nd-stage acceleration, which excludes the possibility of detonation DHW behind the wave front and, in General, the system of channels supply DHW. Additional reservere the project for a safe operation mode of the apparatus 1 annular chamber 29 plavuse fixed in the cavity 11 with fluid under pressure through the elastic in the axial and radial directions of the plates in the form of separators, and the junction of the channel 32 and the chamber 29 is made by elastic adapter. The change in the ratio of the mixture DHW Pets within ±1.5 percent. Speed (Wc) hydroprobe on superposition her shot is determined according to:

(U.S. Pat. No. 2188120),

in which values of the parameters: Ao, V, Sn, Lc, Po correspond to the values of explosive combustion DHW:

Ao is the local speed of sound in the products of the explosion;

S is a sectional area of the channel mnogomodovoi head 16;

Lc is the length of the channel for moving hydroprobe equal to the length of the channel in the cylinder 16;

Po is the gas pressure from the explosion products;

Mn is the mass of the truncated hydroprobe;

V is the ratio of heat capacities: V_Not=5/3 at T=300K;

High-speed liquid-gas stream entering the ejector shaft 7, ejective water mass entering the barrel 7 through radial window and magelone radial-axial cavity of the fairing 2. The result is a high-pressure high-speed hydro jet thrust. By adjusting with the remote control the geometry of the working profile of the ejector shaft 7 actuator with the inclusion of highway 45, the hydraulic cylinder 41 and the actual elements: support ring 42, the rods 43 and ring 44 establish the optimal value of the process ejection the I water masses and in General settings hydro jet thrust.

The proposed apparatus 1 can be applied in the GID for such boats, as yachts and boats.

Injection and to allow the apparatus, comprising a fixed node, the face-plate, provided with axially partitioned cavities, each of which through channels and holes connected to the mains gas or fluid under pressure, and a mobile node contains mnogozubkovoy head with shank-shaft mounted in the Central hole of the faceplate, the mobile node is equipped with providepulmonary sleeve with spiral grooves, and a nozzle head - bore nozzles with possibility of rotation, characterized in that, to increase the efficiency of the device by increasing the ballistic characteristics of high-speed liquid-gas pulsed ejection of the thread shank shaft kinematically connected with electric or hydraulic drive and in one of the partitioned cavities posted annular chamber, connected to a line supplying a gaseous explosive mixture in the faceplate on the same diameter with the other her holes have blind hole - a socket connected with the annular chamber by a channel which is integrated non-return valve with pilot and cutter dispenser in the form of a rectangular spring plate, which is built jet, spout dispenser is contact the-sliding coupling with the frontal surface of the head, which has the same diameter with dispenser made grooves of segmental form, the depth of which corresponds to the course of opening and closing the orifice of the nozzle of the dispenser, in addition, the apparatus in the form of a monoblock is mounted in the compartment of the hull fairing, which through pylons fixed thin-walled sleeve - ejecting barrel, the walls of which are made of spiral vzaimodopolnjaemy tape strips and thermoabrasion confused-diffuser contour, the exhaust end of which is kinematically connected with the annular cylinder, the fairing through the pylon attached to the craft, energomontaj line apparatus connected to a stationary power sources and remote control on boats through the channel tunnel in the pylon.