Hydraulic ram

FIELD: engines and pumps.

SUBSTANCE: hydraulic ram comprises feed pipe 1, impact valves 10 and 11, two hydraulic cylinders 8 and 9, and overflow pipe 32. Besides, this ram comprises vacuum pumps 28 and 29 and membranes 13 and 14 to be separated hydraulic cylinders 8 and 9 intercommunicated via overflow pipe 32 with valve 34. Ends of pipe 32 are equipped with bellows 33. Impact valves 10 and 11 of both membrane cylinders 8 and 9 are connected by rocker 19 with rods 17 and 18 articulated with vertical strut 21. Membranes 13 and 14 with stiff pin are coupled with impact valves 10 and 11 fitted in vertical pipes 6 and 7 secured at feed pipe 1.

EFFECT: controlled operation, higher reliability and efficiency.

3 cl, 1 dwg

 

The invention relates to a pump engineering turn out, in particular for hydraulic structures Taranov, and can be used as a water-lifting device.

Known hydraulic RAM containing the supply pipe with valve and shock valve connected to the pipe, an air cap with check valve and flow valve is provided with an additional line, placed parallel to the supply pipe and connected to an air cap by means of an additional valve, in addition, the piston has a stem with an additional angular piston mirror located at the main corner of the piston (see SU 1164473 A1, 30.06.1985, F04F 7/02).

The disadvantage of hydraulic RAM is that you need additional feeding the pipeline with the valve, and this complicates the device. Shock valve with an angular piston loaded with cargo, what aggravates it, and considerably reduces the efficiency of the device, while the presence of the piston always leads to the complexity of its movement, leads to jamming of the last in a hostile environment.

Known hydracarina installation comprising two parallel incident pipelines with a non-return valve, shock valve in the form of bilateral angular piston mounted for axial movement, contains the crankshaft to move the wheel, and p is giving the pipelines are provided with two pairs of cylinders, located in the area of the non-return valves fitted with pistons with rods, and cylinders of each pair are provided with overflow pipe and communicated through the check valve with one of the feed pipes, and the cylinders of each pair are connected together and to the crankshaft, and on the back of the valves are mounted partitions to overlap overflow piping (see SU 1231281 A1, 15.05.1986, F04F7/02).

The disadvantage hydrotrans installation is that the device is complicated by the presence of a feed line. The design of the shock valve closes the flow cross-section of one of the feed lines, however, a large inertia in the work it reduces the performance of the installation and therefore the link with two pairs of cylinders are not always correlated in General. Actuators (pistons with rods) create inconvenience for maintenance and repair of low reliability. In addition, the movement of the pistons with rods in a hostile environment can always call them jamming and requires a lot of effort on their movement, there is no speed detecting the shock valve. The water hammer pressure depends on height and its weight shock valve, however, the height may not be exceeded more than the estimated value for is definitely the distance (difference) between the shock valve and supply pipe. In this case, rotation of the crankshaft move the wheel of this design is unevenly distributed in a circular movement, which affects the movement of the pistons with rods, respectively, unreliable operation of the valves. Thus, the lack closest large inertia and low reliability.

The objective of the invention is to develop a design hydraulic RAM, which allows the regulation of work, increase reliability, increase efficiency hydracarina.

To solve the problem in the hydraulic RAM (containing the supply pipe, shock valve, two cylinder, overflow pipe, according to the invention, Taran is equipped with a vacuum pump and a membrane separating the cylinders, the cavity of which is hydraulically connected between the overflow pipe with the valve, and the ends of the pipeline is equipped with a bellows headroom, and shock valves both membrane cylinders are connected by swivel rocker with rods, pivoted on a vertical pole, and the membrane with a rigid center associated with each shock valve, which is installed in a vertical pipe, mounted on the feed line. The vertical pipe is furnished with a ring clamp on the inner wall to limit the movement of one is about from the shock valves. Cavity membrane cylinders are connected through tubes of the duct with the pressure regulator.

The technical result is achieved due to:

- use a vacuum pump for removal of air from the cylinder and increase the inflow of liquid in the second cylinder;

- the presence of the kinematic link between the membranes separating the cylinders and the working body of the overflow pipe for flow of fluid in each cylinder.

Therefore, the vacuum pump is operated in the mode of the pump and valve controller to perelivom pipe with bellows headroom allows control of the shock valves automatically and allows you to set the speed of the flowing fluid from one cavity membrane cylinder to another cavity membrane cylinder. As a result, when the deflection of the membrane is not broken up its strength in touch with bellows (flexible pipe on both ends). Since the ends of the bellows in the form of tips synchronously in contact with the membrane, and the liquid level is changed in the cylinders when the flow of liquid (at this point, the vacuum pump one works and the other does not work, or is blocked by valve), the balance of the cylinders is broken, and the shock valve change their height position in the vertical inlet p of the tubes, connected by a drain tube. Resulting effect of water hammer in a feed line can be changed in a given time interval, the air cap with pressure valve by actuation of the hydraulic cylinders, respectively, for closing the shock valve.

The duration of the program flow of fluid in each cylinder is implemented in the complex at creating conditions for the filling of atmospheric air and stable operation of the hydraulic cylinder with the liquid through the tube of the duct with the Executive controller in the form of the three-position valve (crane), communicated with the atmosphere.

Under the action posted by the vacuum pump for the removal of air from the cylinder, sharply increased fluid intake (at this point the regulator-three-position valve closes the opening of the pipeline when running one of the vacuum pumps).

Thus, rotation of the three-position valve is exercised by the intake of atmospheric air alternately to the cylinders that fills the air cylinder with the liquid, i.e. when one of the vacuum pumps, at this point there is no intake of atmospheric air into the cylinder without liquid. Is synchronous lifting one shock valve and lowering the other to the same value if there vypuskni the holes in the vertical pipes. Resulting overlap one of the set of input ports which uniquely affect the operation of hydraulic RAM and actuators allow to move outside of the fluid flow, which in turn, creates convenience for maintenance and repair - increases operational reliability.

The hydraulic and air controller communication on the pipes (time relay) can also be carried out at the place manually or remotely using the remote control from the control center management water lift (not shown for simplicity).

Reliability and durability of membranes enclosed in the cylinders is ensured due to the presence of the bounding stroke, made in the form of a rigid rim with holes (not shown) in one of the pipes for shock valve from the lower part of the membrane actuator is associated with the rod, therefore, the movement of the membranes in the cylinders ensures their reliability in the operation of hydraulic RAM.

The use of the invention allows to significantly simplify the design of the device allows to increase the productivity and efficiency of the hydraulic RAM is complete lack of pressure on the diaphragm from below when the outflow of fluid by closing the shock valve. Increases the precision of the regulation and ecost depletion shock valves.

The efficiency of the device is to ensure its operability. The process of intake air in the cylinder with the liquid economical, as used by the air in the absence of energy-consuming devices and by improving the layout of the distribution valve.

The figure schematically shows a hydraulic RAM, a longitudinal section.

Hydraulic RAM provides the supply pipe 1, an air cap 2 with the injection valve 3 and the discharge pipe 4, is associated with the capacity of 5. On the pipeline 1 are mounted nozzles 6, 7 and closed hollow membrane hydraulic cylinders 8, 9, made in the form of spherical tanks, separated by an elastic membrane. Communicating sections of the pipes 6, 7 with shock valves 10, 11 are selected so that the incoming liquid through the nozzles 6 and 7 in the amount of slightly less volume of fluid merging through pipe 12, i.e. the cross-section of the tube 12 is greater cross-sectional area of the drain pipes of the pipes 6, 7. Membrane 13, 14, separating the cylinders 8, 9, made with a rigid center 15, 16. Hard centers 15 and 16 are connected by rods 17, 18. Last pivotally mounted on the swivel arm 19 mounted on the axis 20 hours 21 placed above the cylinders 8, 9. In addition, shock valves 10 and 11 with seals, such as rubber, are respectively, the lower is the inlet 22 of the socket 6, while the valve 11 is above the hole 23 of the socket 7 on the inner surface of which is fixed a stopper 24 move with circular element with a through Windows (not shown). Swivel rocker 19 is connected with the rods 17, 18, one end of which is provided with shock valves 10, 11. The cavity 25 of one of the hydraulic cylinder 8 is partially filled with fluid 26, which is alternately weight for membranes 13 and 14, and a closed hollow cavity 27 of the hydraulic cylinder 9 is filled with air.

Hydraulic RAM device pumping cavities, respectively, of the cylinders 8, 9, made in the form of a vacuum pump 28, 29 through pneumotropic 30, 31. In addition, the cylinders 8 and 9 are communicated between an overflow pipe 32 with the valve-regulator 34, the ends of which are provided with a bellows 33.

Hollow cylinders 8 and 9 is communicated with the atmosphere through vozduhoprovodyaschih tubes 35 and 36 through the regulator in the form of the three-position valve (crane) 37.

Hydraulic RAM operates as follows.

In the initial period of the shock valves 10 and 11 are opened and the discharge valve 3 is closed. The hydraulic cylinder 8 is partially filled with liquid 26, under the action of gravity of the liquid prohibit membrane 13 down, and the shock valve 10 and 11, respectively, are open, connected with the supply pipe 1 through the vertical pipes 6 and 7. To run hydraulic who who Tarana in the work you enter the vacuum pump 29 for the removal of air from the cavity 27 of the hydraulic cylinder 8, under the effect of sharply increasing the flow of fluid from the cavity 25 of the hydraulic cylinder 8 through line 32 and valve 34 in the cylinder 9 (at this point, the vacuum pump 28 to the hydraulic cylinder 8 is not working, or it may overlap the valve - not shown), the balance of the cylinders 8 and 9 is violated, the membrane 13 which divides the hydraulic cylinder 8, bending upwards, and the membrane 14 - down by moving the rods 17 and 18. Thus, the vacuum provides suction through the overflow pipe 32 of the fluid in the hydraulic cylinder 8 or 9. Dose feeder is adjusted by means of valve 34. Increase the speed of the fluid leads to an increase in the frequency of cycles of vacuum pump and increase of vacuum in the cavity and therefore absorbed more liquid. As a result of pressure difference, there is a flow of fluid from one of the hollow cylinder in the other, and Vice versa. Shock valve 10 and 11 at the same time (synchronously) abruptly closed, there is formed a hydraulic shock energy which opens the check valve 3, and the fluid enters the air cap 2 and through the discharge pipe 4 into the container 5. In the second membrane hydraulic process proceeds in a similar way, i.e. vacuum pumps operate alternately, creating a vacuum and the flow of fluid through the overflow line is the gadfly 32. The operation of the shock valves is to control valve 34 on perelivom the space 32, i.e. the flow rate is adjusted by means of valve 34 change of the area of a carrying section that affects the frequency of the closing shock valves (control of operation of the shock valves 10 and 11 can also be accomplished by attaching a compressor for generating compressed air, and injected into the cylinder chamber partially filled with liquid). This control is carried out on site manually or remotely using the remote control control the pumping of fluid in the cavity of the cylinders 8 and 9.

Thus, the control through the overflow pipe 32 hydraulic contact with the valve 34 (time relay) allows you to set the speed of the flowing fluid from one cylinder cavity 8 in the other cylinder chamber 9, and hence to increase or decrease the hydraulic impact in the delivery pipe 1 and the process is repeated in the already described sequence. The result will be a specified time interval due to the actuation of the shock valves 10 and 11 for opening or closing, respectively, the drain pipes branch pipes 6 and 7. The presence of drain tube 12, uniting podobrannye cavity nozzles 6 and 7, promotes sustainable reliable lifting process, omitted what I hold in the upper and lower position of the shock valves 10 and 11, located in vertical pipes 6 and 7, protects against dynamic effects of water flow on the straight section of a feed line. The management of shock valve is in the automatic mode.

This location of the shock is mounted in a vertical pipe mounted on the falling pipe 1, allows to considerably simplify the design of the device, to improve the reliability of their work.

The presence vozduhoprovodyaschih tubes 35 and 36 with the valve 37 provides an orderly and sustainable replenishment of atmospheric air cylinder cavity filled with fluid, resulting in making consumption is only necessary to replenish the cylinder bore 8 or 9 air during the next pumping fluid vacuum pump 28 or 29, in the cavity of which (in the absence of one of the liquid) is formed by a vacuum, and hydraulic RAM starts to work in a more effective flow of liquid through the pipe 32 to the valve-regulator 34, the shock valve 10 and 11 alternately open and close the water outlet holes in the vertical flanges 6 and 7 at the same deflection value upwards of membranes 14 and 15, while maintaining contact with the bellows end walls 33 in the form of a flexible duct connections at the ends of the overflow pipe 32 and valve 34, i.e. in the present case is the tracking system to support the content of the health of the vacuum pump 28 and 29.

To prevent violations of the strength of the material of the membranes 13 and 14 during the movement of the rod 18 upward, respectively, of the rod 17 down the vertical pipe 7 provided with an annular retainer 24 on the inner wall, made in the form of an annular rim with Windows (the latter not shown), above the shock valve 11, and the valves 10 and 11 provided with a sealing element, such as rubber.

The bellows 33 at the ends of the overflow pipe 32 are located above the elastic membrane 13 and 14. This is necessary in case of contact with membranes to have free compression stroke, without compromising the strength of the latter.

There is no delay in the work of the cylinders 8 and 9 immediately before the activation of the vacuum pump 28 or 29 at the time of pumping (suction) of the liquid - work happens in the coordination modes of the elements of the device.

The effectiveness of the invention is that it provides an implementation of technological schemes when operating hydraulic RAM in automatic mode within specified device. Increases the sensitivity and reliability in transient modes of operation of the shock valves. Diaphragm actuators are operable in the range of flow of fluid in a closed hollow cylinder cavity and does not have high requirements to quality of water, and the process of regulating the flow of fluid in hydrocele the Dreux, in operation of the shock valves, eliminates unnecessary discharges fluid in a closed floor membrane cylinder. Furthermore, the design of the system nodes is simple and provides less stress on the regulation of water hammer in a RAM (with less pulling force on the shock valve. Thus, hydrotron has high reliability and performance, and efficiency and is adjustable depending on the speed of the flowing fluid in the cylinders.

1. Hydraulic RAM containing the supply pipe, shock valve, two cylinder, overflow pipe, characterized in that it is equipped with a vacuum pump and a membrane separating the cylinders, the cavity of which is hydraulically connected between the overflow pipe with the valve, and the ends of the pipeline is equipped with a bellows headroom, and shock valves both membrane cylinders are connected by swivel rocker with rods, pivoted on a vertical pole, and the membrane with a rigid center associated with each shock valve, which is installed in a vertical pipe, mounted on the feed line.

2. Hydraulic RAM according to claim 1, characterized in that the vertical pipe is furnished with a ring clamp on the inner wall to limit movement of one of the shock valves.

3. the hydraulic RAM according to claim 1, characterized in that the cavity membrane cylinders are connected through tubes of the duct with the pressure regulator.



 

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