CN111570904A

CN111570904A - Cutting device for petroleum casing pipe

Info

Publication number: CN111570904A
Application number: CN202010513812.1A
Authority: CN
Inventors: 彭军民
Original assignee: Taizhou Xin'an Technology Co ltd
Current assignee: Taizhou Xin'an Technology Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-08-25

Abstract

The invention discloses a cutting device for an oil casing, which comprises a feeding seat arranged on the ground, wherein a thread cavity is arranged in the left surface of the feeding seat, a thread shaft is connected in the thread cavity in a threaded manner, a positioning seat is abutted against the left surface of the feeding seat, a first motor which is connected with the thread shaft in a power mode is fixedly arranged in the right surface of the positioning seat, a sliding cavity which is symmetrical in front and back position is arranged in the upper surface of the positioning seat, a supporting rod is connected in the sliding cavity in a sliding manner, and a baffle is fixedly connected to the upper end of the supporting rod.

Description

Cutting device for petroleum casing pipe

Technical Field

The invention relates to the related technical field of drilling equipment, in particular to a cutting device for an oil casing.

Background

The petroleum casing pipe is a steel pipe used for supporting the wall of a well of an oil well or a gas well so as to ensure the normal operation of the whole oil well after the drilling process and the completion of the well, and is a very important component in the petroleum drilling process; the petroleum casing pipe always meets the situation that the petroleum casing pipe needs to be cut off in the using process, the petroleum casing pipe is generally a seamless steel pipe and has a larger diameter, so the petroleum casing pipe has larger self weight, the steps of feeding, carrying and the like during cutting can be relatively troublesome, the cutting difficulty is increased, the labor intensity of the whole process is high, and the cutting efficiency is relatively low.

Disclosure of Invention

The invention aims to provide a cutting device of an oil casing, which is used for overcoming the defects in the prior art.

The invention relates to a cutting device for an oil casing, which comprises a feeding seat arranged on the ground, wherein a thread cavity is arranged in the left surface of the feeding seat, a thread shaft is connected in the thread cavity in a threaded manner, a position adjusting seat is abutted against the left surface of the feeding seat, a first motor which is connected with the thread shaft in a power mode is fixedly arranged in the right surface of the position adjusting seat, a sliding cavity which is symmetrical in front and back positions is arranged in the upper surface of the position adjusting seat, a supporting rod is connected in the sliding cavity in a sliding manner, the upper end of the supporting rod is fixedly connected with a baffle plate, a feeding cavity is arranged in the upper surface of the feeding seat, a second motor is fixedly arranged on the right wall of the feeding cavity, the left side of the second motor is connected with a motor shaft, the left end of the motor shaft is rotatably connected in the left wall of the feeding cavity, a feeding mechanism for supporting and feeding the oil casing is arranged on the motor shaft, and a cutting, the oil pipe cutting machine is characterized in that a first through hole penetrates through the left wall and the right wall of the cutting base, an annular sliding cavity is arranged in an annular side wall of the first through hole, a disc is connected in the annular sliding cavity in a sliding mode, a second through hole opposite to the first through hole penetrates through the left wall and the right wall of the disc, a conductive iron ring symmetrical in the left position and the right position is arranged in the annular side wall of the annular sliding cavity, an annular groove is arranged in the right wall of the disc, an annular clamping tooth is arranged on the annular side wall of the annular groove, a power mechanism capable of enabling the disc to rotate is arranged at the front lower side of the annular clamping tooth, a cutter mechanism of an annular array and used for compressing and cutting an oil sleeve is arranged in the side wall of the second through hole, and a control mechanism used for controlling the cutter mechanism, the feeding mechanism and the power.

On the basis of the technical scheme, the feeding mechanism comprises two supporting bottom plates positioned in the feeding cavity, the left supporting bottom plate is fixedly arranged on the left wall of the feeding cavity and is rotatably connected to the motor shaft, the right supporting bottom plate is slidably connected to the feeding cavity and is in threaded connection with the motor shaft, a threaded hole penetrates through the lower side of the right supporting bottom plate, a fixed cavity with symmetrical front and back positions is arranged in the upper surface of the supporting bottom plate, a fixed rod is inserted into the fixed cavity, a supporting concave block is fixedly arranged on the upper side of the fixed rod on the left side, a lower clamping block is fixedly arranged on the upper side of the fixed rod on the right side, an upper clamping block is hinged to the upper side of the lower clamping block, a clamping space is arranged between the upper clamping block and the lower clamping block, telescopic cavities with symmetrical upper and lower positions are arranged in the upper and lower walls of the clamping space, the opposite end of push rod has set firmly the arc splint, the arc splint with fixedly connected with first spring between the inner wall in clamping space, set firmly in the right side of the lower surface of last clamp splice is used for adsorbing the clamp permanent magnet of clamp splice down.

On the basis of the technical scheme, the power mechanism comprises a power cavity communicated with the front lower side of the annular groove, a power shaft is rotatably connected between the left wall and the right wall of the power cavity, the left end of the power shaft is in power connection with a third motor fixedly arranged in the left wall of the power cavity, and a gear in meshing connection with the annular latch is in key connection with the power shaft.

On the basis of the technical scheme, the cutter mechanism comprises a cutter cavity located in the inner wall of the second through hole, a cutter is connected in the cutter cavity in a sliding mode, one end, far away from the second through hole, of the cutter is fixedly connected with a permanent magnet in the cutter cavity in a sliding mode, one end, far away from the second through hole, of the permanent magnet is fixedly connected with a second spring, and one end, far away from the second through hole, of the second spring is fixedly connected with an electromagnet in the cutter cavity.

On the basis of the technical scheme, all the electromagnets are connected in parallel through first electric wires, two contact pieces which can be in direct contact with the conductive iron ring are fixedly arranged in the surface of the lowest side of the disc, and the contact pieces are connected with the electromagnets on the lowest side through second electric wire circuits.

On the basis of the technical scheme, the control mechanism comprises rod cavities positioned in the left wall and the right wall of the sliding cavity on the front side, a first iron rod with the right end fixedly connected with the supporting rod is slidably connected in the rod cavity on the left side, a third spring is fixedly connected between the first iron rod and the left wall of the rod cavity, the right side of the supporting rod is fixedly connected with a connecting rod which is connected with the rod cavity on the right side in a sliding manner, the right end of the connecting rod is fixedly connected with a second iron rod which is connected with the rod cavity on the right side in a sliding manner, a first iron sheet is fixedly arranged in the bottom wall of the rod cavity on the right side, the first iron sheet is connected with the conductive iron ring circuit through a third electric wire, a second iron sheet is fixedly arranged in the bottom wall of the rod cavity on the left side, the second iron sheet is connected with the second motor circuit through a fourth electric wire, and the conductive iron ring is connected with the third motor through a fifth electric wire circuit.

The invention has the beneficial effects that: can realize the automatic feed and cut off to the great oil casing of dead weight itself, consequently can be very laborsaving when actual operation, whole operation process very simple simultaneously, only need adjust the length that needs cut and just can automatic completion cutting operation, the efficiency of cutting off simultaneously is relatively better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view showing the overall construction of a cutting apparatus for an oil casing according to the present invention;

FIG. 2 is a schematic view of the present invention taken along the line A-A of FIG. 1;

FIG. 3 is a schematic view of the present invention taken along the line B-B of FIG. 1;

fig. 4 is an enlarged view of the invention at C in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Referring to fig. 1 to 4, the cutting device for petroleum casing pipes according to the embodiment of the present invention includes a feeding base 34 installed on the ground, a threaded cavity 60 is provided in a left surface of the feeding base 34, a threaded shaft 30 is connected to the threaded cavity 60 through a threaded connection, a positioning base 10 is abutted to a left surface of the feeding base 34, a first motor 31 connected to the threaded shaft 30 by power is fixedly provided in a right surface of the positioning base 10, a sliding cavity 16 symmetrical in a front-back position is provided in an upper surface of the positioning base 10, a support rod 17 is slidably connected to the sliding cavity 16, a baffle 20 is fixedly connected to an upper end of the support rod 17, a feeding cavity 27 is provided in the upper surface of the feeding base 34, a second motor 29 is fixedly provided on a right wall of the feeding cavity 27, a motor shaft 28 rotatably connected to a left wall of the feeding cavity 27 is rotatably connected to a left side of the second motor 29, the motor shaft 28 is provided with a feeding mechanism 801 for supporting and feeding an oil casing, the left side of the feeding cavity 27 is provided with a cutting seat 22 fixedly arranged on the upper surface of the feeding seat 34, a first through hole 23 penetrates between the left wall and the right wall of the cutting seat 22, an annular sliding cavity 62 is arranged in the annular side wall of the first through hole 23, a disc 35 is connected in the annular sliding cavity 62 in a sliding manner, a second through hole 59 opposite to the first through hole 23 penetrates through the left wall and the right wall of the disc 35, a conductive iron ring 41 symmetrical in left and right positions is arranged in the annular side wall of the annular sliding cavity 62, an annular groove 21 is arranged in the right wall of the disc 35, an annular latch 63 is arranged on the annular side wall of the annular groove 21, a power mechanism 802 capable of rotating the disc 35 is arranged at the front lower side of the annular latch 63, and an annular array cutter mechanism 803 for compressing and cutting the oil casing is arranged in the side wall of the second through hole 59, and a control mechanism 804 for controlling the opening and closing of the cutter mechanism 803, the feeding mechanism 801 and the power mechanism 802 is arranged on the lower side of the sliding cavity 16.

In addition, in one embodiment, the feeding mechanism 801 includes two supporting bottom plates 26 located in the feeding cavity 27, the supporting bottom plate 26 on the left side is fixedly disposed on the left wall of the feeding cavity 27 and rotatably connected to the motor shaft 28, the supporting bottom plate 26 on the right side is slidably connected to the feeding cavity 27 and threadedly connected to the motor shaft 28, a threaded hole 61 is formed through the lower side of the supporting bottom plate 26 on the right side, a fixing cavity 57 with symmetrical front and back positions is formed in the upper surface of the supporting bottom plate 26, a fixing rod 25 is inserted into the fixing cavity 57, a supporting concave block 24 is fixedly disposed on the upper side of the fixing rod 25 on the left side, a lower clamping block 49 is fixedly disposed on the upper side of the fixing rod 25 on the right side, an upper clamping block 47 is hinged to the upper clamping block 49, a clamping space 46 is disposed between the upper clamping block 47 and the lower clamping block 49, and a telescopic cavity 42 with symmetrical up and down positions is disposed in the, a push rod 43 is slidably connected in the telescopic cavity 42, an arc clamping plate 45 is fixedly arranged at one end, opposite to the push rod 43, of the arc clamping plate 45, a first spring 44 is fixedly connected between the arc clamping plate 45 and the inner wall of the clamping space 46, and a clamping permanent magnet 48 used for adsorbing a lower clamping block 49 is fixedly arranged in the right side of the lower surface of the upper clamping block 47.

In addition, in one embodiment, the power mechanism 802 includes a power chamber 36 communicated with the front lower side of the annular groove 21, a power shaft 38 is rotatably connected between the left wall and the right wall of the power chamber 36, a third motor 39 fixedly arranged in the left wall of the power chamber 36 is dynamically connected to the left end of the power shaft 38, and a gear 37 engaged with the annular latch 63 is keyed on the power shaft 38.

In addition, in one embodiment, the cutter mechanism 803 includes a cutter cavity 53 located in the inner wall of the second through hole 59, a cutter 50 is slidably connected in the cutter cavity 53, a permanent magnet 51 slidably connected to the cutter cavity 53 is fixedly disposed at an end of the cutter 50 away from the second through hole 59, a second spring 52 is fixedly connected to an end of the permanent magnet 51 away from the second through hole 59, and an electromagnet 54 fixedly disposed in the cutter cavity 53 is fixedly connected to an end of the second spring 52 away from the second through hole 59.

In addition, in one embodiment, all the electromagnets 54 are connected in parallel through a first electric wire 58, two contact pieces 56 capable of being in contact with the conductive iron ring 41 are fixedly arranged in the lowest surface of the disc 35, and the contact pieces 56 are electrically connected with the electromagnets 54 at the lowest side through a second electric wire 55.

In addition, in one embodiment, the control mechanism 804 includes a rod cavity 14 located in the left and right walls of the sliding cavity 16 on the front side, a first iron rod 15 fixedly connected to the right end of the rod cavity 14 on the left side and the support rod 17 is slidably connected to the rod cavity 14 on the left side, a third spring 13 is fixedly connected between the first iron rod 15 and the left wall of the rod cavity 14, a connecting rod 18 slidably connected to the rod cavity 14 on the right side is fixedly connected to the right end of the support rod 17, a second iron rod 19 slidably connected to the rod cavity 14 on the right side is fixedly connected to the right end of the connecting rod 18, a first iron sheet 33 is fixedly arranged in the bottom wall of the rod cavity 14 on the right side, the first iron sheet 33 is electrically connected to the conductive iron ring 41 through a third electric wire 32, a second iron sheet 12 is fixedly arranged in the bottom wall of the rod cavity 14 on the left side, and the second iron sheet 12 is electrically connected to the second motor 29 through a fourth, the conductive iron ring 41 is electrically connected to the third motor 39 through a fifth electric wire 40.

In the initial state, the cutter 50 is positioned in the cutter cavity 53 under the tension of the second spring 52, the upper clamping block 47 is abutted with the lower clamping block 49, the arc clamping plate 45 is closest to the first spring 44 under the elastic force of the first spring, the supporting rod 17 is abutted with the right wall of the sliding cavity 16 under the elastic force of the third spring 13, the feeding seat 34 is abutted with the positioning seat 10, the supporting bottom plate 26 on the right side is positioned at the rightmost end, the first iron rod 15 is in a contact state with the second iron sheet 12, and the circuit where the fourth electric wire 11 is positioned is connected.

When the cutting-off work is needed, the first motor 31 is started, the threaded shaft 30 rotates, the threaded shaft 30 and the threaded cavity 60 rotate relatively, the position adjusting seat 10 is placed on the ground and cannot rotate, so that the rotation of the threaded shaft 30 enables the position adjusting seat 10 to move left gradually until the position adjusting seat moves to the distance from the position where the cutter 50 cuts to the baffle plate 20 and the distance that the supporting rod 17 moves left is equal to the length needing to be cut off, and then the first motor 31 is closed; opening the upper clamping block 47 and rotating upwards, then placing the left end of the petroleum casing pipe to be sheared on the supporting concave block 24, then placing the right end of the petroleum casing pipe on the arc clamping plate 45 at the lower side, then turning the upper clamping block 47 back to the original position, further adsorbing and fixing the lower clamping block 49 by the clamping permanent magnet 48, and further clamping the petroleum casing pipe by the arc clamping plates 45 at the upper side and the lower side under the elastic force of the first spring 44; then, the second motor 29 is started, the motor shaft 28 rotates, the supporting bottom plate 26 on the right side gradually moves to the left under the effect of threaded connection of the motor shaft 28 and the threaded hole 61, the petroleum casing pipe gradually moves to the left, the petroleum casing pipe penetrates through the first through hole 23 and the second through hole 59, the left end of the petroleum casing pipe is abutted to the baffle plate 20 and pushes the baffle plate 20 to move to the left, the supporting rod 17 moves to the left, and the first iron rod 15, the connecting rod 18 and the second iron rod 19 move to the left; the first iron rod 15 is separated from the second iron sheet 12, the circuit of the fourth wire 11 and the second iron sheet 12 is disconnected, the second motor 29 is turned off, and the position of the petroleum casing pipe is fixed at the moment; meanwhile, the second iron rod 19 contacts the first iron sheet 33, so that the circuit of the third wire 32 is switched on, the conductive iron ring 41 is in an electrified state, the electromagnet 54 is electrified, and the third motor 39 is started; when the third motor 39 is started, the power shaft 38 rotates, and therefore the gear 37 rotates, and therefore the disc 35 starts to rotate; when the electromagnet 54 is electrified, the electromagnet 54 repels the permanent magnet 51, and then the permanent magnet 51 and the cutter 50 move towards the direction of the second through hole 59, and then the cutter 50 extrudes the oil casing pipe and cuts off the oil casing pipe along with the rotation of the disc 35; when the petroleum casing is cut off, the petroleum casing on the left side falls down, the baffle 20 and the support rod 17 move rightwards again under the elastic force of the third spring 13 and return to the initial position, the first iron rod 15 contacts with the second iron sheet 12 again, the second iron rod 19 contacts with the first iron sheet 33 again, the second motor 29 is started again to enable the petroleum casing to continue to move leftwards, the third motor 39 is turned off to stop the rotation of the disc 35, the electromagnet 54 is powered off, the cutter 50 returns to the cutter cavity 53 again under the elastic force of the second spring 52, and when the petroleum casing contacts with the baffle 20 again and enables the baffle 20 to move leftwards, the next round of cutting can be started; the supporting base plate 26, the supporting concave blocks 24 and the lower clamping blocks 49 can be detached and replaced to adapt to oil casings with different diameters.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an oil casing's cutting device, includes the feed seat of installing on ground which characterized in that: the left surface of the feeding seat is internally provided with a threaded cavity, the threaded cavity is internally and threadedly connected with a threaded shaft, the left surface of the feeding seat is abutted with a positioning seat, the right surface of the positioning seat is internally and fixedly provided with a first motor which is connected with the threaded shaft in a power manner, the upper surface of the positioning seat is internally provided with a sliding cavity which is symmetrical in front and back positions, the sliding cavity is internally and slidably connected with a supporting rod, the upper end of the supporting rod is fixedly connected with a baffle plate, the upper surface of the feeding seat is internally provided with a feeding cavity, the right wall of the feeding cavity is fixedly provided with a second motor, the left side of the second motor is in power connection with a motor shaft, the left end of the motor shaft is rotatably connected into the left wall of the feeding cavity, the motor shaft is provided with a feeding mechanism for supporting and feeding an oil casing, the left side of the feeding cavity is provided with a cutting seat fixedly arranged on the upper surface of, the novel oil well drilling machine is characterized in that an annular sliding cavity is arranged in an annular side wall of the first through hole, a disc is connected to the annular sliding cavity in an internally sliding mode, a second through hole right opposite to the first through hole penetrates through the left wall and the right wall of the disc, a conductive iron ring symmetrical in left and right positions is arranged in the annular side wall of the annular sliding cavity, an annular groove is arranged in the right wall of the disc, annular clamping teeth are arranged on the annular side wall of the annular groove, a power mechanism capable of enabling the disc to rotate is arranged on the front lower side of the annular clamping teeth, a cutter mechanism of an annular array and used for compressing and cutting an oil sleeve is arranged in the side wall of the second through hole, and a control mechanism used for controlling the cutter mechanism, the feeding mechanism and the power mechanism switch is arranged.

2. The cutting device for petroleum casing according to claim 1, wherein: the feeding mechanism comprises two supporting bottom plates positioned in the feeding cavity, the left supporting bottom plate is fixedly arranged on the left wall of the feeding cavity and is rotatably connected with the motor shaft, the right supporting bottom plate is slidably connected with the feeding cavity and is in threaded connection with the motor shaft, a threaded hole penetrates through the lower side of the right supporting bottom plate, a fixed cavity with symmetrical front and back positions is arranged in the upper surface of the supporting bottom plate, a fixed rod is inserted into the fixed cavity, a supporting concave block is fixedly arranged on the upper side of the fixed rod on the left side, a lower clamping block is fixedly arranged on the upper side of the fixed rod on the right side, an upper clamping block is hinged to the upper side of the lower clamping block, a clamping space is arranged between the upper clamping block and the lower clamping block, telescopic cavities with symmetrical up and down positions are arranged in the upper and lower walls of the clamping space, a push rod is slidably connected in the telescopic cavity, the arc splint with fixedly connected with first spring between the inner wall in clamping space, the right side internal fixation of the lower surface of going up the clamp splice is used for adsorbing the clamp permanent magnet of clamp splice down.

3. The cutting device for petroleum casing according to claim 1, wherein: the power mechanism comprises a power cavity communicated with the front lower side of the annular groove, a power shaft is rotatably connected between the left wall and the right wall of the power cavity, the left end of the power shaft is in power connection with a third motor fixedly arranged in the left wall of the power cavity, and a gear in meshing connection with the annular latch is in key connection with the power shaft.

4. The cutting device for petroleum casing according to claim 1, wherein: the cutter mechanism comprises a cutter cavity located in the inner wall of the second through hole, a cutter is connected in the cutter cavity in a sliding mode, one end, far away from the second through hole, of the cutter is fixedly connected with a permanent magnet in the cutter cavity in a sliding mode, one end, far away from the second through hole, of the permanent magnet is fixedly connected with a second spring, and one end, far away from the second through hole, of the second spring is fixedly connected with an electromagnet in the cutter cavity.

5. The cutting device for petroleum casing pipe according to claim 4, wherein: all the electromagnets are connected in parallel through first wires, two contact pieces which can be in direct contact with the conductive iron ring are fixedly arranged on the surface of the lowermost side of the disc, and the contact pieces are connected with the electromagnets on the lowermost side through second wire circuits.

6. The cutting device for petroleum casing according to claim 1, wherein: control mechanism is including being located the front side the pole chamber in the left and right wall in sliding chamber, it is left the sliding connection in pole chamber have the right-hand member with bracing piece fixed connection's first iron set, first iron set with fixedly connected with third spring between the left wall in pole chamber, the right side fixedly connected with sliding connection of bracing piece is on the right side the connecting rod in pole chamber, the right-hand member fixedly connected with sliding connection of connecting rod is on the right side the second iron set in pole chamber, the right side the diapire in pole chamber has set firmly first iron sheet, first iron sheet through the third electric wire with electrically conductive iron ring circuit connection, it is left the diapire in pole chamber has set firmly the second iron sheet, the second iron sheet through the fourth electric wire with second motor circuit connection, electrically conductive iron ring with through fifth electric wire circuit connection between the third motor.