SU35197A1 - Device for automating steam boilers - Google Patents

Description

The introduction of automatic steam boilers in boiler houses contributes to improving the operating conditions of the boilers and at the same time facilitates the work of the maintenance personnel. In the proposed device, periodic purging, i.e., periodic shutdowns of the purge valve at regular intervals, is carried out by means of a special water cylinder, the piston of which moves under the influence of the flow in the cylinder supplied in controlled quantities. The flow of water into the cylinder during the interval between the blows, which can be changed by accelerating or slowing down this flow, causes the piston to slowly descend at a certain part of its stroke, after which the same piston automatically turns on the additional water inlet into the cylinder. by the accelerated lowering of the same piston and the opening of the toothed rack of the purge valve fixed on its rod. With the approach of the piston to its lower position, during the purging of the boiler, the supply of additional water to the cylinder and through the hollow pipe, which communicates with the cylinder cavity, is stopped.

(2L7)

and siphoning, a connection is established with the drain pipe by automatically opening the last tap for the purpose of releasing the cylinder. The emptying of the cylinder is accompanied by lifting the gun and closing the purge valve before the next purge.

In FIG. 1 depicts a partial sectional view of the device; FIG. 2-section of the faucet for inlet of additional water; FIG. 3-section of the drain pipe valve.

Near the steam boiler 15, a water cylinder 1 is fixed, in the lid 8 of which a pipe 9 is fixed, flanged 41 to tank 10 and communicating the latter with the cylinder of cylinder 1. Pipe 49 and 48 connected to the upper part of tank 10 attached 42 water mains. The tube 49 is filled with a tap 50 in order to regulate the filling of the reservoir 10 and the cylinder I with water, and, consequently, the time required for this. On the pipe 48 is installed automatically overlapped during operation of the device, the water-pressure valve 44.

Attached to piston 2 of cylinder 1 fitted with sealing rings

rod II carrying the toothed rack 38, when moving the rod, engages with the gear 12 mounted on the cork of a cusping crane 13 connected to the downpipe 14. On the rod 11 there is a reinforced cup 17 and on the base plate IG is similar to the 17S cup between which A buffer spring 18 is put on the rod extension. A drain tube 3 is mounted under the piston 2 into the bottom of the cylinder. To drain water, which can be passed through the piston seal. To the upper part of the latter, with the help of a flange 6, a drain pipe 7, serving as a continuation of the stem, is attached, equipped with a hole 40 in its part located inside the cylinder, and L-shaped is bent in its rest outside the cylinder, and in the last part. a drain pipe is used as a siphon and a stop valve 30 is installed. Both the rod 11 and the pipe 7 are passed through the seals 4, 4, fastened with bolts 5, 5 at the exit from the cylinder. 27, which may engage with a gear 35, put on a plug of a crane 44, equipped with a ratchet 46 and a handwheel 45. The handwheel is equipped with a finger to put on a connecting rod 19 articulated with a pin 25 with a rack 20, which serves to turn the plug of crane 36 to opening it. A spring 31 is put on the end of the rod 25, held between the bracket 22 and the washer 33 with the aid of checks 32. The spring tends to pull the rod 25 and the rod 19 down, which corresponds to the closed position of the crane 44. The rail 20 is fixed on the rack 26 and is acting when the rail is lowered 27 (closed position 44 krpna) on the cog 36, opens the latter. On. In addition to the rack 2G, there is also a rail 27, which is used for turning with the help of a servo 35 of a handwheel 45, on whose axis a ratchet 46 is worn. with a spring ZG held by a washer 33 and a check 32. Both the crane 44 and the bearing of the axis of the handwheel 45 are mounted on an ending arm 39 mounted on the cylinder cover 8. A bracket 34 is attached to the post 39, carrying, as well as the bottom bracket 37, guides 21, 21 for rods 25, 25 and bushings 24 for pipe 7.

The operation of the device is as follows. Water through pipe 49 enters the reservoir 10 and then into cylinder 1, the piston of which is in the upper position. The water supply is regulated by the tap 50 depending on the required gap between the blowdowns, and the smaller this interval is, the more intensive the water supply should be. As water accumulates above the piston 2 in the pipe 9 and the tank 10, under the influence of all this water, the piston 2 will slowly descend, and with it the pipe 7 and the pillars 26 with its gear racks.

The water supply through the pipe 49 must be such that the advancement (lowering) of the rail 38 on the rod prior to its interaction with the gear 12 of the purge valve 13 takes place within a few hours, constituting the interval between the blowdowns. Together with the beginning of the engagement of the .38 rail and the teeth 12, the rail 27 engages with the gear 35 of the crane 44, with the opening of which additional water ii3 of the tube 48 begins to flow into the space under the piston 2 in a large amount. This flow of water will cause a quick downward movement of the piston and the corresponding opening purge valve 13. When lowering the piston 2 to the bottom of the cylinder 1, the rail 27 will go through the gear 35 of the crane 44 and release the latter. Action pru-. jiiy 31 valve 44 will be closed and the water will stop flowing through the tube 4S. At the same time, the faucet 36 of the drain pipe will open with a rail 20, and under the action of the water column in the tank 10, the pipe 9 and the cylinder 1, water from the latter through the hole 40 will flow into the drain pipe 7, which is a siphon. Due to the reduced load when water is drained and under the action of the spring 18, the piston 2 will also lift with its rail 38

will close the purge valve. Further cylinder de-icing is performed under the action of the spring 18 raising the piston and the siphon working. When the upper position of the pores lower rod 25 rail 26 closes the valve 36 of the drain pipe. The lowering of the rail 2 (will occur under the influence of a raised rack 26 of the rail 27 on

y the handle L5 of the handwheel 45, when rotated, moves down the shatun 19 and the rod 25. When the uphill rack moves 2G, the ratchet 35 of the crane 44 rotates idle, as does the turn of the ratchet 35 of the handwheel 45 when the indicated stand moves down.

With the passage of the Porsche 2 to the upper position, one purging cycle, consisting of a few hours interval and the purge itself, ends.

ftM should be as required (depending on the living cross section of the plug 44) for a few (usually

cha, 3-5) minutes.

G / wgo

The subject matter of the invention.

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kj.1

Claims (4)

1. Device for automation of pro and 2 steam boilers, characterized in that for the purpose of periodically carrying out a purge by appropriate shutdowns of the purge valve, the water cylinder 1 with the piston 2 connected to the stopper of the purge valve and moved by the water entering the cylinder is applied at certain intervals. Q | i mine in regulated quantities, and removed through a periodically operating siphon 7 connected to the specified piston. 2. The form of execution of the device according to claim H, in order to control the water supply to the cylinder 1 for the purpose of adjusting the intervals between Blowing onto the tube about the protruding pipe 49 is installed a crane 50. 3 The form of the device according to claim 1, characterized in that the plate 2 is provided, on the one hand, with a hollow brush (pipe 7) designed to reposition the organs of the device . switching off and turning the latter into operation, and, on the other hand, a spring 11 loaded with a rod 11 with a gear rack 38 serving to open and close when the drain valve 13 is blown with the gear 12 fixed on its stopper. 4. The form of the device according to p. 1-3, characterized by the use of a rod mounted on the drain pipe constituting a continuation of a shaft 7, an jaw 26 with a rack 27, designed to interact with the serration 35 on a plug of a ratchet valve 44 that controls the supply of additional water to cylinder I through pipe 48 The purpose of accelerating the lowering of porigN 2 and the corresponding opening of a crane J. five; The form of the device according to p. 1-4, characterized by using a spring-loaded rod 25, articulated by means of a rod 19 with a handwheel 45 on a plug of a crane 44 and equipped with a toothed rack 20 for opening the valve 20 of the drain pipe for emptying the cylinder 1 through the inlet of a hollow brush 7 and a drain pipe for lifting the lorsch 2 and closing the drain valve 13. b. An embodiment of the device according to claim 3, characterized in that for closing the siphon valve 36, when the piston 2 is in the upper position after emptying the cylinder 1, a gear rail 26 is used, which is fastened on the rod 25 loaded with a spring 31 and connected with a handgrip 45 on a shaft which is fitted with a ratchet. the gear 35, which engages with the spline rack 27 on the rack 26.