CN213297815U - Drilling pressure control valve for screw drill - Google Patents

Abstract

The utility model discloses a screw rod is drilling control valve for drilling tool, including screw rod casing and lead screw, the lead screw matches the setting with the screw rod casing, and the lead screw is located the screw rod casing, lead screw one end fixedly connected with connecting plate, the connecting plate matches the setting with the screw rod casing, and the one end fixedly connected with motor that the lead screw was kept away from to the connecting plate, the motor includes motor casing, stator, rotor and output shaft, the stator matches the setting with the rotor, and stator and rotor all are located the motor casing, the one end fixedly connected with output shaft of connecting plate is kept away from to the rotor, the output shaft outwards runs through motor casing fixedly connected with drilling rod. The utility model discloses a set up stock solution box and automatic cooling device in the motor casing and can in time carry out cooling treatment to drill bit and rotor rubber sleeve, avoid drill bit and stator rubber sleeve to be in overheated environment for a long time, improved the life of drill bit and stator rubber sleeve.

Description

Drilling pressure control valve for screw drill

Technical Field

The utility model relates to an oil field oil production technical field especially relates to a screw rod is drilling control valve for drilling tool.

Background

In the mechanical oil extraction process of an oil field, because the oil well has high exploitation strength and increasingly serious stratum sand production, the mechanical oil extraction often leads to sand burying of an oil layer to cause the production reduction and the production stop of the oil well, in order to recover normal production, a screw drill is used for drilling and flushing sand, and the screw drill is a positive displacement type underground power drill which takes drilling fluid as power and converts liquid pressure energy into mechanical energy.

Among the prior art, the screw rod drilling tool is when the brill sand, and rotor and stator rubber sleeve and rotor take place the friction, and the temperature rise can arouse the ageing of rubber sleeve to influence motor assembly's life, in addition, the drill bit need be handled its cooling when long-time work, in order to ensure the normal life of drill bit, consequently need design a drilling pressure control valve for the screw rod drilling tool and solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the friction of the stator rubber sleeve is easy to age when being heated and the defect of temperature reduction treatment can not be carried out on the drill bit in time in the prior art, thereby providing a drilling control valve for a screw drilling tool.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a drilling control valve for a screw drilling tool comprises a screw shell and a main screw, wherein the main screw is matched with the screw shell, the main screw is positioned in the screw shell, one end of the main screw is fixedly connected with a connecting plate, the connecting plate is matched with the screw shell, one end of the connecting plate, far away from the main screw, is fixedly connected with a motor, the motor comprises a motor shell, a stator, a rotor and an output shaft, the stator is matched with the rotor, the stator and the rotor are both positioned in the motor shell, one end of the rotor, far away from the connecting plate, is fixedly connected with the output shaft, the output shaft outwards penetrates through the motor shell and is fixedly connected with a drill bit, one end of the drill bit, far away from the output shaft, is fixedly sleeved with a reinforcing plate, the reinforcing plate is positioned between the drill bit and the drill rod, and a plurality of, the outer side wall of the connecting framework is sleeved with a cover body matched with the drill bit, and an automatic cooling device is arranged in the motor shell.

Preferably, the automatic cooling device comprises a heat conducting tube and a liquid storage box, wherein the heat conducting tube and the liquid storage box are arranged on the inner wall of one side of the motor shell far away from the reinforcing plate, the motor shell is provided with a liquid filling port communicated with the liquid storage box, a corresponding threaded plug is arranged in the liquid filling port, cooling liquid is arranged at one end of the liquid storage box close to the stator, a piston plate is connected in the heat conducting tube in a sealing and sliding manner, an elastic switch is fixedly arranged on the inner wall of one end of the heat conducting tube, a proper amount of evaporating liquid is arranged between one side of the piston plate far away from the elastic switch and the inner wall of the other end of the heat conducting tube, a plurality of groups of liquid outlet pipes which are uniformly distributed are embedded in the side wall of the motor shell, the plurality of groups of liquid outlet pipes are communicated with the liquid storage box, a plurality of groups of electrically, and one side of each electric control valve, which is far away from the motor shell, is provided with a communicated spray head, and a plurality of groups of electric control valves are electrically connected with the elastic switch.

Preferably, the outer side wall of the heat conducting cylinder is fixedly provided with a heat conducting plate, and the heat conducting plate is made of an aluminum alloy material.

Preferably, the main component of the evaporated liquid is liquid dichloromethane with the melting point of.DEG C.

Preferably, an annular oil storage cavity is arranged in the screw shell, the oil storage cavity is communicated with the inner cavity of the shell through a plurality of groups of uniformly distributed lubricating oil holes, an oil filling port communicated with the oil storage cavity is formed in the side wall of the screw shell, and a corresponding sealing plug is arranged in the oil filling port.

The utility model has the advantages that: the utility model discloses the structure is simple relatively, soak lubricating oil to the lead screw lateral wall that can be timely through set up the oil storage chamber in the screw rod casing, avoid the lead screw wearing and tearing to take place in long-term the use, thereby the life of lead screw has been improved, can in time cool off the cooling and handle drill bit and rotor rubber sleeve through set up stock solution box and automatic cooling device in the motor casing, avoid drill bit and stator rubber sleeve to be in overheated environment for a long time, the life of drill bit and stator rubber sleeve has been improved, the effectual screw rod drilling tool of having solved is when boring the sand, the stator rubber sleeve rubs the problem that heat is ageing easily.

Drawings

Fig. 1 is a schematic structural diagram of a drilling pressure control valve for a screw drill according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is an enlarged view at B in fig. 1.

In the figure: the device comprises a screw shell 1, a main screw 2, a motor shell 3, a reinforcing plate 4, a drill rod 5, a drill bit 6, an oil storage cavity 7, an oil lubricating hole 8, a rotor 9, a stator 10, a connecting plate 11, a liquid storage box 12, an electric control valve 13, a liquid outlet pipe 14, a heat conducting cylinder 15, evaporated liquid 16, an elastic switch 17 and a spray head 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a drilling pressure control valve for a screw drill, comprising a screw housing 1 and a main screw 2, wherein the main screw 2 is matched with the screw housing 1, the main screw 2 is positioned in the screw housing 1, an annular oil storage chamber 7 is arranged in the screw housing 1, the oil storage chamber 7 is communicated with an inner cavity of the housing through a plurality of groups of evenly distributed lubricating oil holes 8, an oil filling port communicated with the oil storage chamber 7 is arranged on a side wall of the screw housing 1, a corresponding sealing plug is arranged in the oil filling port, lubricating oil can be timely infiltrated into the side wall of the main screw 2 through the oil storage chamber 7 arranged in the screw housing 1, abrasion of the main screw 2 in long-term use is avoided, so that the service life of the main screw 2 is prolonged, one end of the main screw 2 is fixedly connected with a connecting plate 11, the connecting plate 11 is matched with the screw housing 1, the motor comprises a motor shell 3, a stator 10, a rotor 9 and an output shaft, wherein the stator 10 is arranged in a matching way with the rotor 9, the stator 10 and the rotor 9 are both positioned in the motor shell 3, one end of the rotor 9, which is far away from a connecting plate 11, is fixedly connected with the output shaft, the output shaft outwards penetrates through the motor shell 3 and is fixedly connected with a drill rod 5, one end of the drill rod 5, which is far away from the output shaft, is fixedly connected with a drill bit 6, a reinforcing plate 4 is fixedly sleeved on the output shaft, the reinforcing plate 4 is positioned between the drill rod 5 and the motor shell 3, a plurality of groups of uniformly distributed connecting frameworks are arranged between the reinforcing plate 4;

an automatic cooling device is arranged in the motor shell 3, when a screw drill is used for drilling sand, the motor displacement is small, the rotating speed is high, high-speed friction is generated between a rotor 9 and stator 10 rubber in the motor, the friction causes temperature change so as to accelerate aging of a stator 10 rubber sleeve, and the automatic cooling device is arranged, when a heat conduction cylinder 15 senses that the temperature in the motor shell 3 is higher than 39.75 ℃, the high temperature in the motor shell 3 is transmitted to an evaporation liquid 16 to cause the evaporation liquid 16 to be gasified, the piston plate is pushed to press an elastic switch 17, so that an electric control valve 13 is opened, the cooling liquid in the liquid storage box 12 continuously flows into a liquid outlet pipe 14 to cool the stator 10 rubber sleeve, and simultaneously the cooling liquid can be sprayed on the reinforcing plate 4 through a spray head 18 to cool the drill bit 6, the practicability is strong, the automatic cooling device comprises a heat conduction cylinder 15 and a liquid storage box 12, the heat conduction cylinder 15 and the liquid storage box 12 are arranged on the inner wall of one side of the motor shell, the outer side wall of the heat conducting cylinder 15 is fixedly provided with a heat conducting plate which is made of an aluminum alloy material, the heat conducting plate made of the aluminum alloy has good heat conducting capacity and can rapidly transmit high temperature in the motor shell 3 to evaporated liquid 16 in the heat conducting cylinder 15 to avoid overheating and aging of a rubber sleeve of the stator 10, the motor shell 3 is provided with a liquid filling port communicated with the liquid storage box 12, a corresponding threaded plug is arranged in the liquid filling port, one end of the liquid storage box 12 close to the stator 10 is provided with cooling liquid, the heat conducting cylinder 15 is internally connected with a piston plate in a sealing and sliding manner, an elastic switch 17 is fixedly arranged on the inner wall of one end of the heat conducting cylinder 15, a proper amount of the evaporated liquid 16 is arranged between one side of the piston plate far away from the elastic switch 17 and the inner wall of the other end of the heat conducting cylinder 15, the main component of the evaporated liquid 16 is liquid dichloromethane with, the multiple groups of liquid outlet pipes 14 are communicated with the liquid storage box 12, the end, far away from the connecting plate 11, of the motor shell 3 is provided with multiple groups of electric control valves 13 which are uniformly distributed, each electric control valve 13 is communicated with the corresponding liquid outlet pipe 14, one side, far away from the motor shell 3, of each electric control valve 13 is provided with a communicated spray head 18, and the multiple groups of electric control valves 13 are electrically connected with the elastic switch 17.

The utility model discloses in, the screw drilling tool is after using a period, the temperature of drill bit 6 and stator 10 rubber sleeve can sharply rise, at this moment, heat conduction section of thick bamboo 15 senses when motor housing 3 internal temperature is higher than 39.75 degrees centigrade, can give evaporating liquid 16 gasification for evaporating liquid with the high temperature transmission in the motor housing 3, promote the piston plate and press elastic switch 17, thereby open automatically controlled valve 13, coolant liquid in the stock solution box 12 can be again through spraying the cooling down to drill bit 6 on reinforcing plate 4 by shower nozzle 18 when advancing drain pipe 14 and cooling down stator 10 rubber sleeve, the practicality is stronger.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. A drilling control valve for a screw drilling tool comprises a screw shell (1) and a main screw (2), wherein the main screw (2) is matched with the screw shell (1), and the main screw (2) is positioned in the screw shell (1), and is characterized in that one end of the main screw (2) is fixedly connected with a connecting plate (11), the connecting plate (11) is matched with the screw shell (1), and one end, far away from the main screw (2), of the connecting plate (11) is fixedly connected with a motor, the motor comprises a motor shell (3), a stator (10), a rotor (9) and an output shaft, the stator (10) is matched with the rotor (9), the stator (10) and the rotor (9) are both positioned in the motor shell (3), one end, far away from the connecting plate (11), of the rotor (9) is fixedly connected with the output shaft, and the output shaft outwards penetrates through the motor shell (3) and is fixedly connected with a drill rod (5), the drill rod (5) is kept away from one end fixedly connected with drill bit (6) of output shaft, fixed cover is equipped with reinforcing plate (4) on the output shaft, reinforcing plate (4) are located between drill rod (5) and motor casing (3), be provided with multiunit evenly distributed's connection skeleton, multiunit between reinforcing plate (4) and drill bit (6) connect the skeleton lateral wall cover and be equipped with the cover body that matches with drill bit (6), be provided with automatic cooling device in motor casing (3).

2. The drilling control valve for the screw drill according to claim 1, wherein the automatic cooling device comprises a heat conducting cylinder (15) and a liquid storage box (12), the heat conducting cylinder (15) and the liquid storage box (12) are both arranged on the inner wall of one side of the motor housing (3) far away from the reinforcing plate (4), the motor housing (3) is provided with a liquid filling port communicated with the liquid storage box (12), a corresponding threaded plug is arranged in the liquid filling port, cooling liquid is arranged at one end of the liquid storage box (12) close to the stator (10), a piston plate is connected in the heat conducting cylinder (15) in a sealing and sliding manner, an elastic switch (17) is fixedly arranged on the inner wall of one end of the heat conducting cylinder (15), a proper amount of evaporation liquid (16) is arranged between one side of the piston plate far away from the elastic switch (17) and the inner wall of the other end of the heat conducting cylinder (15), a plurality of groups of uniformly distributed liquid outlet pipes (14) are embedded in the side wall of, multiunit drain pipe (14) all communicate with stock solution box (12), and motor casing (3) keep away from the one end of connecting plate (11) and be provided with multiunit evenly distributed's automatically controlled valve (13), every automatically controlled valve (13) all communicate with corresponding drain pipe (14), and one side that motor casing (3) were kept away from in every automatically controlled valve (13) is provided with shower nozzle (18), the multiunit of intercommunication automatically controlled valve (13) and elastic switch (17) electric connection.

3. The drilling pressure control valve for the screw drill according to claim 2, characterized in that a heat conducting plate is fixedly arranged on the outer side wall of the heat conducting cylinder (15), and the heat conducting plate is made of an aluminum alloy material.

4. The drilling pressure control valve for a screw drill according to claim 2, wherein the evaporated liquid (16) is mainly composed of liquid dichloromethane having a melting point of 39.75 ℃.

5. The drilling pressure control valve for the screw drill according to claim 1, characterized in that an annular oil storage chamber (7) is arranged in the screw housing (1), the oil storage chamber (7) is communicated with the inner cavity of the housing through a plurality of groups of uniformly distributed lubricating holes (8), an oil filling port communicated with the oil storage chamber (7) is arranged on the side wall of the screw housing (1), and a corresponding sealing plug is arranged in the oil filling port.

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