SU1423773A1 - Starting valve - Google Patents

Abstract

The invention is intended for marine reversible diesel engines. A valve 4 is placed in the valve body 1, at the lower end of which a plate 3 is made, which interacts with a conical seat 2. A balancing piston (П) 5 is installed at the upper end of the brush 4, which interacts through the spring 14 with the control valve П 13, whose diameter is equal to the diameter of the plate 3. An additional control P 10 is installed on the P 13 with the possibility of sliding, the diameter of which is not less than 1.15 of the diameter of P 13. In the middle of the bottom (D) P 10 there is a hole that passes into the recess 12 on the inside D. the upper half of the skirt 10 is made to The rifle groove 15 is connected by the openings 16 to D. The seating surface D is in contact with the conical seat made in the lid 9 of the housing I in the area of the nozzle 1 1 for supplying control compressed air. When the engine is braked, the compressed air entering through the nozzle 11 moves the brush 4 and advances the plate 3 from the saddle 2, bypassing the air from the side nozzle 8 into the engine cylinder. The valve is held in the open position, P 10, 13 and 5 provide the reverse flow of air into the starting pipeline, preventing the entry of combustion products into it. I 3. n. F-ly, 1 ill. cl

Description

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The discussion concerns the launching K. iaiiana d. 1I of the ship’s reversible diesel engines - 1 atsday.

In marine engines of the Eversin engine, the starting valves serve as for the supply of compressed air to the engine cylinder during the expansion stage, which is emitted during the engine start-up, the hook and during its braking. Two opposing requirements are placed on the controlling (iiopnjeHb start-up), a la 11anov ship reverse 1, 1 engines. Dl engine start is the same. It is advisable that the size of the control piston ensure the control of the starting cylinder. Only during that time when the combustion does not occur in the cylinder. Pgo diamerg should have a little bit of such a ve / 1name so that sic.ch from the pressure of combustion. act) p1a on tare.1ku valve, not cM () ei o otkryggy. When braking dvigate.15 ;. especially in emergency braking, pa revolution, it is necessary that the diameter of the connecting piston is substantially larger than the diameter of the valve disc. Then you can stop the ship's engine already at the highest speed of the ship, 1I.

Known start-up} Oh k.lapan d,: | skhivy reversive engine internally () sgo;) aa, content of the body with a side pipe nycKOBOio supply of compressed air and a conical sed.chom. nggok klanan, at the lower end of which is about 1) az () Van Tare / Jakk, 1 can with Psk can be installed on the Seat, 1 O body, and Pa ve) Helen Conpe installed equalizing iiopHieni ;, and the cover with a compressed air supply pipe and a piston controlling the piston, between which and the piston is a spring (copyright certificate (((L No. 97: 5908, cl. F- (.12 N 9/04, 1981).

A. However, in the known 1st k.lanane, the penetration of C14 products)) an into the starting pipeline is possible, which is the trichin of various engine damage.

(l) G, 1asp () of the invention), is known to start-up lanan equipped with a further piston mounted slidably on the control p (1; 1) with diameter equal to the diameter of the harrel to Valve, and finally 1) The 1st piston of a young piston is made with a diameter of not less than 1.15 of the diameter of an elbow.

Bosom 1note; 1nny urav. The 1st section can be made with a hole in the middle of its bottom) 11ts, not a hole (x1 meters into the undercut on the inside of the bottom, a circular groove in the upper butt of its skirt connected to the bottom of the skirt and on the bottom, in contact with the conical seat, made in the cover in the area of the pipe connecting the control compressed air.

On what ggez the proposed device is presented.

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On the lower side of the valve body I there is a conical saddle 2, on which a clan plate 3 is formed, formed at the lower end of the 4-ct. Rod shaft. An equalizing nopHjeHb 5 is attached to the upper end of the stem 4, mixed into a cylindrical cavity in the housing 1. The housing 1 is placed concentrically around the stem 4. Coupling 6, in which the closing spring 7 is supported with the lower end of the pipe on the bottom of the muff0 You have 6 and an upper end on the lower side of the balancing piston 5, which all the time presses the plate 3 to the saddle 2. On the housing 1 there is a side fitting 8 for starting compressed air. The body 1 is attached. Lena to) the head 9 with the lower part of the cavity, V11 full of coaxiality with the valve axis, in which (; I find the L opportunity to slip) and the outer piston 10. In the middle of the bottom of the piston 10 there is a hole facing the tension valve 11 of the compressed air supply in the cover 9. A hole 12 inside the bottom of the piston 10 is oriented to the hole in the piston 10. In addition, K), it is also possible to locate the internal control pins 13 with an auxiliary spring 14, which rests on the upper edge of the balancing norm 5. The secondary spring 14 pushes the internal control IiopnjeHb 13 into the external control. of course, the norm I), and the last one in cover 9. Auxiliary. The spring 14 is weaker, because the spring 7 is closed, and its purpose is to keep both pistons 10 and 13 in the upper extreme position at that time when 1 supply is without pressure. In the upper half of the skirt

the outer guideline of your poropJn 10 is the inner circular groove 15, crj is the only holes 16 with the bottom (nopin-n and ii). The diameter of the internal control 13 is approximately equal to the diameter of the clan plate 3, and the diameter of the external control piston 10 is at least 1.15 the diameter of the internal piston 13.

The starting valve when starting the engine works as follows.

Into the cylinder of the engine, in which the combustion still occurs, it is supplied to the beginning of the sprained 11od1 em compressed air. 1 a pipe 1 I in the cover 9, a control compressed air is inserted into the starting valve above the internal control piston L,

Q Brown overcomes the auxiliary spring 14 and sits on the upper end of the HITOK; I 4 k.tana. When it moves, the norm- 1nen 13 overcomes the closing spring 7 and advances the plate 3 from the saddle 2, since the pressure force is compression in the cylinder,

5 acting on the plate 3, less than the force of the compressed air, acting on the internal control piston 13. But the nozzle 8 with the foot of the compressed air through

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starting pipeline from tank to engine cylinder. When combustion already occurs in the cylinder, the pressure force of the combustion prevents the opening of the starting valve and, therefore, the penetration of the combustion products into the starting pipeline. The outer right-hand piston 10 is thus held by the action of a compressed air on the lower area of the undercut 12 inside its bottom in the upper position and ensures that it is tightly pressed against the saddle of the nozzle II.

When braking the engine starting valve operates as follows.

At the beginning of the compression lift, compressed air is supplied to the cylinder. Compressed air enters the nozzle 1 1 over the internal control unit 13, which acts on the upper end of the rod 4 and advances the plate 3 from the saddle 2, since there is low air pressure in the engine cylinder. The pipe 8 passes the compressed air through

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reverse air flow in the launch pipeline.

Claims (2)

Claim 1. Starting valve for marine reversible internal combustion engine, comprising body 1 with side inlet 8 supplying start-up compressed air and conical m seat 2, HJTOK 4 valves, at the lower end of which is formed a plate 3 valves with fit to seat 2 housing I, and at the upper end there is an equalizing pressure 5, and a cover 9 disposed on the housing 1 with a pipe 11 for supplying control compressed air and a controlling pressure 13, between which and the balancing piston 5 there is a spring 14, distinguishing The fact that it is equipped with an additional control with a piston 10, mounted slidably on the control piston 13, is made with a diameter equal to 25 the starting pipeline from the tank to the cy- 20 is the diameter of the plate 3 valves, and the additional engine is the cylinder. Upon further movement of the control axle 13, the circular groove 15 opens in the outer control axle 10 and through the openings 16 the compressed air flows over the external control piston 10, which with the help of the internal control axle 13 and the balancing piston 5 holds the starting valve in open position and when the air pressure increases significantly during the compression lift in the cylinder. This prevents premature closing of the starting valve and allows The main control piston 10 has a diameter of at least 1.15 times the diameter of the control piston 13. 2. Valve according to claim 1, characterized in that the additional control piston 10 is made with a hole in the middle of its bottom, passing into the recess 12 on the inside of the bottom, with a circular groove 15 in the upper half of its skirt, connected by holes 16 with its bottom, and 30 mounting surface on the bottom in contact with the conical seat, made in the cover 9 in the area of the socket 1 1 for supplying control compressed air. 0 five reverse air flow in the launch pipeline. Claim 1. Starting valve for marine reversible internal combustion engine, comprising body 1 with side inlet 8 supplying start-up compressed air and conical m seat 2, HJTOK 4 valves, at the lower end of which is formed a plate 3 valves with fit to seat 2 housing I, and at the upper end there is an equalizing pressure 5, and a cover 9 disposed on the housing 1 with a pipe 11 for supplying control compressed air and a controlling pressure 13, between which and the balancing piston 5 there is a spring 14, distinguishing The fact that it is equipped with an additional control with a piston 10, mounted slidably on the control piston 13, is made with a diameter equal to 0 valve plate diameter 3 valves, and additional the diameter of the plate is 3 valves, and the additional The main control piston 10 has a diameter of at least 1.15 times the diameter of the control piston 13. 2. Valve according to claim 1, characterized in that the additional control piston 10 is made with a hole in the middle of its bottom, passing into the recess 12 on the inside of the bottom, with a circular groove 15 in the upper half of its skirt, connected by holes 16 with its the bottom, and the landing surface on the bottom in contact with the conical seat, made in the cover 9 in the zone of the socket 1 1 for supplying the control compressed air.