Patent EA-001692-B1 (EA)
Title: Bob system for alternating pumps
Inventor: ALQUEZAR GAZULLA MANUEL
IPC: F04B47/04
Filed: 1998-10-05
Abstract: 1. This is a bob system for alternating pumps characterized by a single effect hydraulic cylinder (2) joined to a support pipe (4) with an oil intake-outlet (5), with an interior choke and, at the end of the support pipe (4) a plug with joints closing the single effect hydraulic cylinder (2). It is supported by a plate (6), which is in turn supported over another plate (7) joined to the structure (8) with a seat at the summit by means of braces (9) and with ones of its facings open to facilitate assembly and disassembly of boring pipes. The single effect cylinder (2) is mounted vertically at the summit of the structure (8) and both are installed along the vertical of the water or oil well (16), completely benefiting the running of the rod (17) by means of the stem (10), since both are located at the center of gravity, where the force originated by the single effect hydraulic cylinder (2) is applied. 2. The bob system for alternating pumps, in accordance with Claim 1, is characterized by a single effect cylinder (2), a piston (3) with an extension (19) containing holes (20) for control of the oil, when the stem is lowered, the piston extension (19) enters the support pipe (4) where it meets a choke, forcing the oil to pass through the holes (20) towards the stem (10), and as the stem is lowered, the holes are gradually closed and less holes remain open for oil to pass through, producing a gradual and smooth deceleration of the stem (10), when inverting the stem (10) run, the opposite takes place, that is, during ascension oil is transferred from the side of the stem (10), through the holes (20) on the side of the oil sleeve (2) of the hydraulic cylinder, until the piston extension (19) and the holes (20) are freed, this produces an overpressure, which is corrected by the internal piloting and double dampener cartridge valve under the joints that rub against the stem (10), installed on the support pipe (4) that makes up the closing plug for the hydraulic cylinder (2)- we have installed a vessel shaped part attached to the closing plug of the hydraulic cylinder (2) by internal joints that also rub against the stem (10), in order to pick up, by atmospheric pressure, any possible loss in hydraulic oil that may escape from the closing plug of the hydraulic cylinder (2), said vessel has a hole with a pipe on the lower section and over its internal joints, which directs any possible escape of hydraulic oil through the pipe (1) to the tank (18). 3. The bob system for alternating pumps, in accordance with Claim 1, characterized in that comprises a hydraulic system and an electrical-electronic circuit, said hydraulic system operates, when a single effect hydraulic cylinder (2) that, as volume and pressure are supplied to the stem (10), is retracted pulling with it the pumping rod (17), that between the oil intake-outlet pipe (5) and the pump (24) a collector (39) is installed, in order to install within it an oil control by means of subtraction from the stem (10) operation, in said collector, an internal piloting and double dampener cartridge valve (33) is installed and is controlled by two calibrated holes and an electronic valve (34), in such as manner that the electronic valve without electrical current remains open and the piloted oil passes directly through it to the tank (18), maintaining also open the internal piloting and double dampener cartridge valve (33), passing through it the greater oil volume supplied by the pump (24), through the cartridge valve (33) and a variable volume regulator to the tank (18), wherein when the electronic valve receives an electrical signal, the internal piloting and double dampener cartridge valve gradually closes the piloting, by zone differential or by spring mechanism, since it has a greater area and, therefore, a greater oil volume on the side of the electronic valve (34), this side gradually fills with oil, controlled by a calibrated hole on the internal piloting and double dampener cartridge valve, which closes slowly and smoothly, without any ramming, directing oil through the pipe (5) to the cylinder (2), retracting the stem (10), which then pulls the pumping rod (17),wherein when the stem (10) run is completed, the electrical signal to the electronic valve is cut and the valve causes the opening of the internal piloting and double dampener cartridge valve, however, the piloting oil is controlled by a calibrated hole in the electronic valve, sending the piloting oil to the tank (18) and opening the internal piloting and double dampener cartridge valve smoothly, without any ramming, since the stem (10) is lowered by gravity but controlled by the variable volume regulator, sending oil to the tank (18) by means of subtraction, the collector is provided with a pressure regulation device (32), so that when there is any overpressure in the hydraulic circuit, for example, by the pulling of the alternating pump it sends an electrical signal to the motor's starting and protection panel, stopping the collector (39) immediately, and also that a subtraction variable volume regulator is installed in the collector which, if opened or closed, decelerates or accelerates the stem (10) during its rise, adjusting the load pressure to the hydraulic cylinder and also to the pair in the motor, said variable volume regulator diverts oil to a filter which passes through a cooler and, once cooled, returns to the tank (18). 4. The bob system for alternating pumps, in accordance with Claim 3, characterized in that the electrical-electronic circuit comprises a programmable timer (RE) for the startup of the motor pump (24) in combination with a motor startup and protection electronic panel that may be remotely set in such a manner that, when the programmable timer by contact closes the remote command position of the electronic panel, the electronic panel then causes the startup of the motor, when the motor pump is started and in full revolutions, without hydraulic load, a timed contact from the electronic panel begins a timer and, after a few seconds, passes electrical current to introduce the hydraulic load in the hydraulic system and in the single effect hydraulic cylinder (2), with the automation of three laser photocells (26,27,28) with mirrors (29,30,31), a relay with two open contacts (K1,K2) and the coil (EL) for the electronic piloting control valve (34) for the the internal piloting and double dampener cartridge valve (33), wherein three cells (26,27,28) emitting laser spread, two (27,28) with open contacts (C1,C2) and one (26) with a closed contact (C3) , receiving electrical current from the timer contact of the electronic panel, said three photocells (26,27,28) are positioned along one face of the structure (8) and the mirrors (29,30,31) are faced one on one to each cell on the opposite face, so that the stem (10) in the hydraulic cylinder (12) with the rod (42) with the greater diameter passes between and cuts through the laser spreads, wherein the motor pump is started but has no hydraulic load, the stem (10 will be deployed and in the lower section, the first photocell (28), or the lowest, for the pump startup will be faced by the joint (42) and the cut laser spread, having the part (42) in the middle of the photocell (28) and the mirror (31) closing the contact on the first photocell, or the lowest, activating a relay coil with two contacts (K1,K2) that close and lock said relay by the closed contact (C3) on the third photocell, or the highest, and by a contact (K2) of that same relay, the other relay contact (K1) sends electrical current to the coil (EL) of the hydraulic piloting control electronic valve (34), closing it and, by means of a calibrated hole and greater area, gradually closes, smoothly and without ramming, for the the internal piloting and double dampener cartridge valve (33), sending the oil to the single effect hydraulic cylinder (2), beginning the rising of the stem (10) for said cylinder and starting the pumping action, when the joint (42) reaches the front of the third or highest photocell (26), it will cut that laser spread, opening its contact (C3) cutting the relay's electrical current, opening the relay and, therefore, that of the piloting electronic valve, sending it to the tank (18) by means of a calibrated hole, opening smoothly and without ramming, the internal piloting and double dampener cartridge valve, sending it the oil from the hydraulic cylinder (2) and the pump (24), through the collector and the variable volume regulator and the stem (10) lowering control, to the tank (18), initiating thus the lowering of the stem (10), when reaching the joint (42) reaches the second or middle photocell (27), - which is slightly higher than the first or lowest one (28)- it cuts the laser spread, closing its contact and repeating the electrical and hydraulic function described for the first or lowest photocell (28), creating a repetitive up and down pumping movement, similar to that of a yo-yo. 5. The bob system for alternating pumps, in accordance with Claim 1, characterized in that the structure (8) has one of its faces (53) open, and therefore without braces, facilitating on said face the assembly or disassembly of the boring piping (14) by the following procedure: on the point of the stem (10) a flange (46) or other mechanical hook is installed, which in turn is secured to the pipe to be placed and removed from the column of pumping pipes and to actuate the hydraulic system by the force of the hydraulic cylinder (2), the stem (10) raises or lowers the pumping pipe column, making unnecessary the use of a crane for the boring assembly or disassembly, on the face opposite the open face of the structure (8), a guide profile (43) is installed from top to bottom, with said profile having a skid with horizontal rollers and flange fixed to the stem (10) point, wherein when the stem (10) is placed in motion - in an ascending or descending run, during the boring assembly o