CN218093298U

CN218093298U - Underground integrated turbine generator

Info

Publication number: CN218093298U
Application number: CN202222545801.9U
Authority: CN
Inventors: 席唯; 蔡华祥; 黄其; 李志远
Original assignee: Guizhou Aerospace Linquan Motor Co Ltd
Current assignee: Guizhou Aerospace Linquan Motor Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2022-12-20
Anticipated expiration: 2032-09-26

Abstract

A kind of DH integrated form turbine generator, the inside of the bush has steel magnets fixedly, fixedly connect with the turbine in the bore of the steel magnet; an armature is sleeved on the outer peripheral surface of the sleeve corresponding to the position of the magnetic steel, and a gap is formed between the inner wall of the armature and the outer wall of the sleeve; an inner shell is sleeved outside the armature, and an outer shell is sleeved outside the inner shell; the upper end and the lower end of the outer shell are respectively provided with an upper end cover and a lower end cover; and bearings are respectively arranged between the upper end cover, the lower end cover and the sleeve. When high-pressure high-speed drilling fluid rushes through the turbine, blades of the turbine start to rotate at high speed, so that the magnetic steel and the sleeve are driven to rotate together, and electric energy generated by cutting the magnetic induction lines by the coils of the armature is stored or output to supply power for the drilling tool and other sensors. Along the axial direction of the generator, the magnetic steel and the armature are consistent in position in the axial direction, so that the length of the turbine generator is effectively reduced, the size of the underground drilling generator is greatly reduced, and the efficiency of the generator is improved.

Description

Underground integrated turbine generator

Technical Field

The utility model relates to a generator technical field especially relates to an integrated form turbine generator in pit, is a high-power generator suitable for the power supply of oil electric drilling system in pit.

Background

The power supply mode of the underground drilling system is always an important supporting part for continuous operation of equipment, and meanwhile, the increase of the power can facilitate the equipment to simultaneously realize the increase of the drilling power and the torque and meet the power supply requirements of other sensors. At present, a power supply device of a downhole electric drilling system for petroleum drilling exploration mainly comprises a high-temperature physical battery and a downhole turbine generator. The high-temperature battery management system can be used only once, cannot be charged for repeated use, has a limited service life, cannot work underground for a long time, and is easy to break down or even explode due to vibration, high temperature and the like. Thus, downhole turbine generators are the primary means of powering downhole electric drilling systems.

In the prior art, for example, patent application No. CN201910903946.1 discloses an underground high-power turbine generator, a casing device of the whole generator is fixedly installed inside a hollow drill rod, a turbine rotating device faces the incoming direction of slurry, a third magnetic steel structure of the turbine rotating device and a second magnetic steel structure on a rotor shaft form a magnetic coupling transmission mechanism, when the turbine rotating device rotates, the third magnetic steel structure rotates to drive a second magnetic steel structure located in a power generation device installation cavity to rotate, so that the rotor shaft rotates, and the first magnetic steel structure rotates, so that a coil of a stator assembly cuts magnetic lines of force, the coil in the stator assembly generates induced electromotive force to form a three-phase high-frequency alternating current point, and the three-phase high-power turbine generator is supplied to equipment requiring electric energy through an electric wire.

For another example, patent application No. CN200620158603.5 discloses a downhole turbine generator, which is installed inside a hollow drill rod, and includes a stator coil and a rotor magnet, wherein the stator coil is fixed on the inner wall of the drill rod through a flow tube, the rotor magnet is fixed on a main shaft, and the upper end of the main shaft is connected with a turbine. In the drilling process, high-pressure circulating drilling fluid passes through an inner cavity of the drill rod and is changed in direction by a stator flow cylinder fixed on the flow cylinder to impact the turbine to rotate, so that the rotor magnet is driven to rotate in the stator coil, and the stator coil cuts magnetic lines of force to realize power generation.

In the prior art, although the basic function of power supply is satisfied, the positions of magnetic steel, turbine and other parts in the power generation device are unreasonable, so that the whole underground turbine power generation device is complicated and bulky in structure and overlarge in length direction, and during actual use, the installation of the turbine power generation device is limited and influenced by the size and the efficiency of the power generation device is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a turbo generator of integrated form in pit aims at solving among the prior art too big problem of turbo generator length direction in the pit.

In order to achieve the above object, the utility model provides a down-hole integrated form turbine generator, its structure is: a magnetic steel is fixedly connected inside the sleeve, and a turbine is fixedly connected in an inner hole of the magnetic steel; an armature is sleeved on the outer peripheral surface of the sleeve corresponding to the position of the magnetic steel, and a gap is formed between the inner wall of the armature and the outer wall of the sleeve; an inner shell is sleeved outside the armature, and an outer shell is sleeved outside the inner shell; the upper end and the lower end of the outer casing are respectively provided with an upper end cover and a lower end cover; and bearings are respectively arranged between the upper end cover, the lower end cover and the sleeve.

Preferably, a spiral water channel is provided on the outer circumferential surface of the inner casing, the spiral water channel and the inner circumferential surface of the outer casing together form a water channel, and sealing rings are installed between the upper and lower ends of the outer circumferential surface of the inner casing and the outer casing for sealing the water channel.

Preferably, two bosses are arranged on the outer peripheral surface of the outer shell, one of the bosses is provided with a water inlet, the other boss is provided with a water outlet, and the water inlet and the water outlet are communicated to the water channel; the boss is provided with a waterway connector.

Preferably, high-pressure insulating oil is added between a stator and a rotor of the turbine generator, and dynamic rotary sealing plugs are respectively arranged between the upper end cover and the sleeve and between the lower end cover and the sleeve.

Preferably, the upper end cover and the lower end cover are respectively fixed with the outer shell by screws; the outer edge of the upper end cover is fixedly connected with the outer edge of the lower end cover through bolts.

Preferably, the magnetic steel is fixedly connected with the outer surface of the turbine in a gluing mode.

Preferably, the magnetic steel and the sleeve are in interference fit.

Preferably, two annular bosses are arranged on the inner circumferential surface of the sleeve, the two annular bosses are arranged at intervals to form clamping grooves, and the magnetic steel is clamped in the clamping grooves.

Preferably, the armature and the inner shell are fixed in an interference press fit mode, and the inner shell and the outer shell are fixed through screws.

Preferably, a circuit board is arranged on the outer peripheral surface of the lower end of the sleeve, the circuit board is fixedly connected with the sleeve through bolts, and the circuit board is electrically connected with the armature.

Since the technical scheme is used, the beneficial effects of the utility model are as follows:

(1) In the utility model, the magnetic steel is fixedly connected inside the sleeve, and the turbine is fixedly connected in the inner hole of the magnetic steel; and an armature is sleeved on the peripheral surface of the sleeve corresponding to the position of the magnetic steel, and a gap is arranged between the inner wall of the armature and the outer wall of the sleeve to form a magnetic loop. When the high-pressure high-speed drilling fluid rushes through the turbine, blades of the turbine start to rotate at a high speed, so that the magnetic steel and the sleeve are driven to rotate together, and electric energy generated by cutting the magnetic induction lines by the coils of the armature is stored or output to supply power for the drilling tool and other sensors. The utility model discloses in, along the generator axial, because magnet steel and armature position unanimous on the axial direction have reduced turbine generator length effectively, have reduced the volume of well drilling generator in the pit greatly and have improved generator efficiency.

(2) The utility model discloses in, through being provided with spiral water tank on the outer peripheral face of inner casing, and the inner peripheral surface of this spiral water tank and outer casing forms the water route jointly, at the during operation, utilizes this water route to pour into endless cooling water into for cool off the generator armature, avoid the armature to take place to damage because of high temperature.

(3) The utility model provides an integrated form generator in pit, with the turbine integration to the rotor of generator in, simplified turbine generator's in pit structure greatly and promoted the transmission efficiency of generator.

Drawings

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

FIG. 1 is a downhole integrated turbine generator assembly view;

FIG. 2 is a schematic view of the working principle of a downhole integrated turbine generator

FIG. 3 is a view of the structure of the turbine embedded in the utility model;

FIG. 4 is a profile view of a downhole integrated turbine generator.

The reference numbers illustrate: 1. a turbine; 2. magnetic steel; 3. a sleeve; 4. an armature; 5. an inner housing; 6. an outer housing; 7. an upper end cover; 8. a bolt; 9. a bearing; 10. a lower end cover; 11. a seal ring; 12. a circuit board; 13. a water inlet hole; 14. a water outlet hole; 15. dynamically rotating the sealing plug; 16. annular boss.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Referring to fig. 1, in an underground integrated turbine generator, a magnetic steel 2 is fixedly connected inside a sleeve 3, and a turbine 1 is fixedly connected in an inner hole of the magnetic steel 2; an armature 4 is sleeved on the outer peripheral surface of the sleeve 3 at a position corresponding to the position of the magnetic steel 2, and a gap is formed between the inner wall of the armature 4 and the outer wall of the sleeve 3; an inner shell 5 is sleeved outside the armature 4, and an outer shell 6 is sleeved outside the inner shell 5; the upper end and the lower end of the outer casing 6 are respectively provided with an upper end cover 7 and a lower end cover 10; bearings 9 are respectively arranged between the upper end cover 7, the lower end cover 10 and the sleeve 3.

With the structure, when high-pressure and high-speed drilling fluid rushes through the turbine 1 when the turbine generator works, the blades of the turbine 1 start to rotate at high speed, so that the magnetic steel 2 and the sleeve 3 are driven to rotate together, and electric energy generated by cutting the magnetic induction lines by the coils of the armature 4 is stored or output to supply power for a drilling tool and other sensors. Along the axial direction of the generator, the magnetic steel 2 and the armature 4 are consistent in position in the axial direction, so that the length of the turbine generator is effectively reduced, the volume of the underground drilling generator is greatly reduced, and the efficiency of the generator is improved.

As shown in fig. 1, a spiral water tank is provided on an outer circumferential surface of the inner casing 5, and forms a water path together with an inner circumferential surface of the outer casing 6, and a seal ring 11 is installed between upper and lower ends of the outer circumferential surface of the inner casing 5 and the outer casing 6 to seal the water path. When the generator works, the water channel is used for injecting circulating cooling water for cooling the generator armature 4, so that the armature is prevented from being damaged due to high temperature.

Referring to fig. 4, two bosses are arranged on the outer peripheral surface of the outer casing 6, one of the bosses is provided with a water inlet 13, the other boss is provided with a water outlet 14, and the water inlet 13 and the water outlet 14 are both communicated with the water channel; the boss is provided with a water way joint for connecting a cooling water pipeline.

In this embodiment, high-pressure insulating oil is added between the stator and the rotor of the turbine generator, and dynamic rotary seal plugs 15 are respectively provided between the upper end cap 7, the lower end cap 10, and the sleeve 3. The dynamic rotary sealing structure is adopted to complete the sealing of the internal high-pressure insulating oil and form a barrier effect on the drilling fluid, and in addition, the dynamic rotary sealing plug 15 can form self dynamic sealing on the high-pressure high-speed drilling fluid, so that the structure is simple and the sealing effect is good.

As shown in fig. 1, the upper end cover 7 and the lower end cover 10 are fixed to the outer casing 6 by screws, respectively; the outer edge of the upper end cover 7 is tightly connected with the outer edge of the lower end cover 10 through a bolt 8. By adopting the structure, the upper end cover 7 and the lower end cover 10 both form a double fixing structure and are used for bearing the impact and vibration generated by the impact of drilling fluid on the turbine blades.

In this embodiment, the magnetic steel 2 is fixedly connected with the outer surface of the turbine 1 in a gluing manner. The magnetic steel 2 and the sleeve 3 are in interference fit.

As shown in fig. 1, two annular bosses 16 are disposed on an inner circumferential surface of the sleeve 3, the two annular bosses 16 are disposed at intervals to form a slot, and the magnetic steel 2 is clamped in the slot. The magnetic steel 2 is axially positioned by utilizing the clamping groove structure.

In this embodiment, the armature 4 and the inner housing 5 are fixed by interference press fitting, and the inner housing 5 and the outer housing 6 are fixed by screws.

Referring to fig. 1, a circuit board 12 is disposed on the outer peripheral surface of the lower end of the sleeve 3, the circuit board 12 is fixedly connected to the sleeve 3 by bolts, and the circuit board 12 is electrically connected to the armature 4. The circuit board 12 stores or outputs the electric energy generated by the magnetic steel 2 and the armature 4 rotating to cut the magnetic induction lines to supply power for the drilling tool and other sensors.

The utility model provides an in the rotor of integrated form generator in pit with turbine 1, simplified turbine generator's in pit structure and promoted the transmission efficiency of generator greatly. Meanwhile, a dynamic rotary sealing structure is adopted to complete the sealing of the drilling fluid, high-pressure insulating oil is added between the rotor and the stator, and the upper end cover and the lower end cover are connected by using the bolt 8, so that the underground integrated turbine generator can bear the severe environment of underground high temperature, high pressure and impact vibration, and has great guiding significance for being applied to an underground drilling power system.

The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation done by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. A downhole integrated turbine generator, comprising: a magnetic steel (2) is fixedly connected inside the sleeve (3), and a turbine (1) is fixedly connected in an inner hole of the magnetic steel (2);

an armature (4) is sleeved on the position, corresponding to the position of the magnetic steel (2), on the outer peripheral surface of the sleeve (3), and a gap is formed between the inner wall of the armature (4) and the outer wall of the sleeve (3);

an inner shell (5) is sleeved outside the armature (4), and an outer shell (6) is sleeved outside the inner shell (5); the upper end and the lower end of the outer casing (6) are respectively provided with an upper end cover (7) and a lower end cover (10);

bearings (9) are respectively arranged between the upper end cover (7), the lower end cover (10) and the sleeve (3).

2. A downhole integrated turbine generator as claimed in claim 1, wherein: a spiral water channel is arranged on the outer peripheral surface of the inner shell (5), the spiral water channel and the inner peripheral surface of the outer shell (6) jointly form a water channel, and sealing rings (11) are arranged between the upper end and the lower end of the outer peripheral surface of the inner shell (5) and the outer shell (6) for sealing the water channel.

3. A downhole integrated turbine generator as claimed in claim 2, wherein: two bosses are arranged on the outer peripheral surface of the outer shell (6), one of the bosses is provided with a water inlet hole (13), the other boss is provided with a water outlet hole (14), and the water inlet hole (13) and the water outlet hole (14) are communicated with the water channel; the boss is provided with a water way joint.

4. A downhole integrated turbine generator as claimed in claim 1, wherein: high-pressure insulating oil is added between a stator and a rotor of the turbine generator, and dynamic rotary sealing plugs (15) are respectively arranged between the upper end cover (7), the lower end cover (10) and the sleeve (3).

5. A downhole integrated turbine generator as claimed in claim 1, wherein: the upper end cover (7) and the lower end cover (10) are respectively fixed with the outer shell (6) by screws; the outer edge of the upper end cover (7) is fixedly connected with the outer edge of the lower end cover (10) through a bolt (8).

6. A downhole integrated turbine generator as claimed in claim 1, wherein: the magnetic steel (2) is fixedly connected with the outer surface of the turbine (1) in a gluing mode.

7. A downhole integrated turbine generator as claimed in claim 1, wherein: the magnetic steel (2) and the sleeve (3) are in interference fit.

8. A downhole integrated turbine generator as claimed in claim 1, wherein: two annular bosses (16) are arranged on the inner circumferential surface of the sleeve (3), clamping grooves are formed by the two annular bosses (16) at intervals, and the magnetic steel (2) is clamped in the clamping grooves.

9. A downhole integrated turbine generator as claimed in claim 1, wherein: the armature (4) and the inner shell (5) are fixed in an interference press-fitting mode, and the inner shell (5) and the outer shell (6) are fixed through screws.

10. A downhole integrated turbine generator as claimed in claim 1, wherein: a circuit board (12) is arranged on the outer peripheral surface of the lower end of the sleeve (3), the circuit board (12) is fixedly connected with the sleeve (3) through bolts, and the circuit board (12) is electrically connected with the armature (4).