SU401794A1 - DRILLING SYSTEM HYDRAULIC SYSTEM - Google Patents

Description

one

This invention relates to ropiioii industrialism and can be used on hydraulic drilling rigs and hydraulic monitors.

Known hydraulic systems of drilling rigs, including pressure and drain lines, co-regulating and starting equipment, and variable pressure regulating valves, are installed on the hydraulic control line.

The proposed hydraulic system differs from the known ones in that the spool valves are connected in pairs with each other, and the copper cavities communicate with the return line and the actuator element, each pair of spools being set to Open pressure that is different from its idling distance 11 of the pair. This allows us to simplify the management of executive bodies and to ensure the independence of their work from each other.

The drawing shows the proposed hydraulic system.

The hydraulic system consists of elements for controlling the working mechanisms and the power elements of these hydraulic mechanisms.

The controls include pump 1, safety valve 2, pressure sensor 3, pressure gauge 4, spool valves 5 and 6 with springs 7 and 8 and with pressure regulators 9 and 10, spool valves 11 and 12 with springs 13 and 14, and Pressure regulators 15 and 16, two-position zolotpiki 17 and 18, with springs 19 and 20. The hydraulic connection between the control elements is guided along the port channels 21-25 and the drain of the capals 26.

The power elements of hydraulic mechanisms, such as hydraulic jacks 27 and 28, include a pump 29, a pre-heater, a first valve 30, a reversing rat 31, and a working fluid tank 32, which serves to power hydraulic mechanisms and steering elements. Reversing crane with hydraulic mechanisms for pressure and discharge lines 33.

The hydraulic system works as follows.

From the tank 32, the working fluid is supplied by the pump 1 through the safety valve 2 to the pressure sensor 3, the role of which can be performed, for example, by a reduction valve or a choke.

To activate one of the hydraulic mechanisms, such as the hydraulic jack 27, by adjusting the sensor 3, the channels 21 create fluid pressure equal to the pressure of opening the slide valve 11. At this, the Valve 11 moves to the right, connecting the channel 21 to the Channel 23. The fluid from the pump 1 enters to the slide 17 and moving it to the left, connects the pressure and drain line 33 to the working cavities of the hydraulic jack 27. If it is necessary to turn on another hydraulic mechanism, for example a hydraulic jack 28, a pressure sensor 3 is created in the channels 21 and a liquid that corresponds to the opening pressure of the valve 12. At the same time, the valve 12 moves to the right and connects the channel 21 to the channel 25, through which the liquid is supplied to the spool 18 and moves it to the left, connecting the pressure and drain lines 33 to the working cavities of the hydraulic cylinder 28. the operating time of the hydraulic jack 28 the hydraulic jack 27 is turned off. It happens as follows. If the opening pressure of valve 12 is larger than valve 11, valve 5, adjusted by regulator 9 to a pressure slightly higher than opening pressure of valve 11, moves to the right, connecting channels 21 and 22. The fluid, which flows to the right side of the slide valve, creates a force , balancing force of the fluid, created from the left end of the spool valve, and under the action of the spring 13 of the clan) 11 moves to the left, the fluid flow from the channel 21 and the channel 23 to the drain channel 26 connects. s 19 displaces the fluid through channels 23 and 26 into the tank and moves to the right, cutting off the working cavities of the hydraulic jack 27 from the pressure and drain lines 33. When any other hydraulic mechanism is put into operation, it is necessary to create in the channels 21 a pressure greater than the opening pressure of the gold valves 11 and 12. At the same time, the eolotnik valves 5 and 6, overcoming the resistance of the springs 7 and 8, move to the right, connecting the channels 21 to the channels 22 and 24. The springs of the channels 13 and 14 move the valves I and 12 to the left, connecting the channels 23 and 25 to the drain channels 26. Duplication The spools 17 and 18 are moved to the right by the action of the springs 19 and 20, disconnecting the hydraulic mechanisms 27 and 28 from the pressure and drain lines 33. The opening pressure of the spool valves 5, 6, I and 12 is regulated by acting on the springs 7, 8, 13 and 14 by regulators 9, 10, 15 and 16 when mounting the hydraulic system. The inclusion of spool valves is monitored by a manometer 4, the slits of which can be framed as a direct indicator of hydraulic mechanisms. The hydraulic mechanisms are reversed by reversing the 1st KpafiOM 31, which, in the neutral position, provides unloading of the pump 29. Protection of pumps 1 and 29 against overloading of the axle g | It is provided with a guard 1) With these valves 2 and 30. Thus, the required number of hydraulic mechanisms, the valves of which are set to different opening pressures, can be installed on the support and drain pans 33. One pulse of pressure can activate only those mechanisms whose spool valves are set to open pressure. PRESENTS OF THE INVENTION A hydraulic system of a drilling rig, including pressure and drain lines, control and regulating and starting equipment and adjusted to different actuation pressure, is a spool valve installed in a hydraulic control line, so that actuators and ensuring their independent operation, the spool valves are interconnected in pairs, and their annular cavities are connected to a drain line and a starting element, each subsequent and the gift of spools is set to open pressure that is different from the value of its previous pair.