CN215057892U - Explosion-proof power generation device for recovering energy of mine return air flow - Google Patents

Abstract

The utility model discloses an explosion-proof power generation facility for retrieving mine return air flow energy, including the wind-tunnel, wind-tunnel one end is connected the fan, and the fan corresponds the installation with the return air well head, the wind-tunnel other end is crooked cooperation upward and is installed wind energy converter, wind energy converter's input is connected with the wind wheel that is located the wind-tunnel export, and the wind wheel is connected with generating set through wind energy converter's output, and wind wheel and wind energy converter all adopt explosion-proof material, the wind-tunnel downside erects the installation through the base group, generating set installs through the mount table, the mount table communicates with ground through the ladder frame; the utility model realizes that one part of the energy of the mine return air flow is recovered and converted into electric energy and the other part is converted into static pressure energy of the wind wheel through the wind tunnel, the wind wheel, the wind energy converter and the motor set, and simultaneously, the wind wheel and the wind energy converter of the utility model both adopt explosion-proof materials to realize the explosion-proof function; through the arrangement of the installation platform and the step frame, the maintenance and the repair of workers are facilitated.

Description

Explosion-proof power generation device for recovering energy of mine return air flow

Technical Field

The utility model relates to a colliery safety in production field, in particular to an explosion-proof power generation facility for retrieving mine return air energy.

Background

In the prior coal mine production, due to existence of dust and harmful gas, in order to remove and dilute mine ventilation, wind tunnel outlets are rectangular, the wind flow speed of the outlets is generally 6 m/s, the wind volume of each return air shaft is generally about 100 cubic meters/s, each return air shaft works all the year round and works uninterruptedly 24 hours a day, a fan needs to increase static pressure to improve the capacity of the fan for overcoming the resistance of an underground roadway, and the energy recovery of the return air flow has great potential and important significance from mines of coal mines all over the country, so that a device for recovering the energy of the return air flow, increasing the static pressure of the fan, generating electricity by recovering the energy of the return air flow of the mine and increasing the static pressure of the fan is urgently needed; meanwhile, in the using process, the explosion-proof problem of the recovery device is not always considered, in addition, the recovery device is large in structure and convenient for workers to overhaul and install, and the existing patent does not relate to the solution of the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an explosion-proof power generation facility for retrieving mine return air flow energy for solving the problem of explosion-proof and the installation of being convenient for among the current mine return air flow energy recuperation process.

The technical scheme adopted for achieving the purpose is as follows:

an explosion-proof power generation device for recovering energy of mine return air flow is arranged at a return air wellhead and comprises a wind tunnel, one end of the wind tunnel is connected with a fan, the fan is correspondingly arranged with the return air wellhead, the other end of the wind tunnel is upwards bent and matched with a wind energy converter,

the wind energy converter is characterized in that the input end of the wind energy converter is connected with a wind wheel positioned at the outlet of a wind tunnel, the wind wheel is connected with a generator set through the output end of the wind energy converter, the wind wheel and the wind energy converter are made of explosion-proof materials, the lower side of the wind tunnel is erected and installed through a base set, the generator set is installed through an installation platform, and the installation platform is communicated with the ground through a step rack.

Further, the wind tunnel is in a circular shape.

Further, the wind energy converter comprises an input shaft, a lower support is rotatably mounted at the lower end of the input shaft, and the wind wheel and the input shaft are integrally mounted and are positioned above the lower support; the wind tunnel wind power generation device is characterized in that an upper support is rotatably mounted in the middle of the input shaft, an annular supporting beam connected with the other end of the wind tunnel is mounted between the lower support and the upper support, the lower support and the upper support are both connected with the inner wall of the annular supporting beam, an installation box is arranged on the upper support, a transmission set is mounted in the installation box, the input shaft penetrates through the upper support and is connected with the transmission set, and the transmission set is connected with the input end of the motor set through an output shaft.

Further, the transmission set comprises an upper bevel gear and a lower bevel gear which are oppositely arranged up and down, the axis of the lower bevel gear is matched with the input shaft to be integrally installed, and the axis of the upper bevel gear is rotationally matched with the input shaft to be installed; the output bevel gear is arranged between the upper bevel gear and the lower bevel gear, the output bevel gear is respectively meshed with the upper bevel gear and the lower bevel gear, and the axis of the output bevel gear is integrally matched with the output shaft.

Furthermore, the input shaft and the lower support, the upper support and the upper bevel gear are respectively installed through a first bearing, a second bearing and a third bearing.

Further, the middle part of the output shaft is provided with a shaft bracket, and the output shaft and the shaft bracket are installed in a matched mode through a fourth bearing.

Furthermore, the mounting table comprises a left mounting table and a right mounting table which are symmetrically arranged on two sides of the wind tunnel, and a front connecting bridge and a rear connecting bridge which are symmetrically arranged on two sides of the wind energy converter are erected between the left mounting table and the right mounting table.

Furthermore, left side mount table, right mount table, preceding connecting bridge and back connecting bridge are the trapezium structure, and are equipped with the ladder frame on the trapezoidal both sides limit.

Further, the generating set is installed on the left mounting table or the right mounting table.

The utility model discloses the beneficial effect who has does:

the utility model relates to a mine return air flow energy recuperation power generation facility installs in the return air well head outside, through setting up the wind-tunnel, the wind wheel, wind energy converter and motor group, turn into mechanical energy with the wind energy, turn into the electric energy again, the realization turns into the electric energy with some recoveries of the energy of mine return air flow, the static pressure energy of wind wheel is converted into to another part of the energy of wind flow, this patent is through all adopting explosion-proof material with wind wheel and wind energy converter simultaneously, realize explosion-proof function, the fail safe nature of assurance device. Through the arrangement of the mounting platform and the step frame, the device is convenient for workers to maintain and maintain. In addition, the wind tunnel through with original cuboid changes the utility model's circle type wind tunnel, is convenient for install the wind wheel.

The utility model discloses an adopt output bevel gear, go up the bevel gear, the three bevel gear meshing of lower bevel gear makes input shaft and output shaft set up perpendicularly, realizes the transmission of mechanical energy and changes the rotation direction, guarantees the transmission to generating set at the power stability of wind wheel.

The utility model discloses an install the pivoting support, the pivoting support can play the supporting role to the output shaft, reduces the output shaft and produces the possibility of great amount of deflection, avoids the output shaft to take place serious deformation in the work to the extension fixture life-span.

Drawings

FIG. 1 is a schematic three-dimensional structure of a power generation device of the present patent;

FIG. 2 is a top view of the power plant of the present patent;

FIG. 3 is a cross-sectional view of the power plant of this patent;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a schematic transmission diagram of a wind energy converter of the power generation device of the present patent;

fig. 6 is a schematic view of the installation of the power generation device of the patent.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-6, a power generation facility for increasing static pressure recovery mine return air flow of a fan 2 is installed at a return air well mouth, and comprises a wind tunnel 3, wherein the fan 2 is connected to one end of the wind tunnel 3, the fan 2 is installed corresponding to the return air well mouth, a wind energy converter 4 is installed at the other end of the wind tunnel 3 in a bending-up fit manner, an input end of the wind energy converter 4 is connected with a wind wheel 11 positioned in the wind tunnel 3, the wind wheel 11 is connected with a power generation unit through an output end of the wind energy converter 4, the wind wheel 11 and the wind energy converter 4 are both made of explosion-proof materials, the lower side of the wind tunnel 3 is erected and installed through a base set 31, the power generation unit is installed through an installation platform 5, and the installation platform 5 is communicated with the ground through a step frame 7. The wind flow of the return air shaft enters the fan 2 from an inlet 1 of the fan, then flows out from an outlet of the fan 2 and enters the wind tunnel 3, the wind flow flows out from the wind tunnel 3 to drive the wind wheel 11 to rotate at a high speed, the wind wheel 11 drives the motor set to work through the wind energy converter 4, so that the wind energy is converted into the electric energy, one part of the energy of the return air flow of the mine is recovered and converted into the electric energy, and the other part of the energy of the wind flow is converted into the static pressure energy of the wind wheel 11. Meanwhile, the wind wheel 11 and the wind energy converter 4 are made of explosion-proof materials, so that an explosion-proof function is realized, and the safety and reliability of the device are ensured. Through the setting of mount table 5 and ladder 7, make things convenient for the staff to go to maintenance and maintenance device.

As shown in fig. 1 to 6, the wind tunnel 3 is in a circular shape to facilitate installation of the wind wheel 11. In this embodiment, wind-tunnel 3 changes into the wind-tunnel 3 of original cuboid the utility model discloses a circle type wind-tunnel 3 to the wind wheel 11 installation that the installation drove the work of wind energy converter 4.

As shown in fig. 1 to 6, in order to convert wind energy into electric energy, in this embodiment, the wind energy converter 4 includes an input shaft 8, a lower bracket 41 is rotatably installed at a lower end of the input shaft 8, the wind wheel 11 and the input shaft 8 are integrally installed and located above the lower bracket 41, and the wind wheel 11 and the input shaft 8 may be welded or installed by using a key slot; an upper support 43 is rotatably mounted in the middle of the input shaft 8, an annular support beam 42 connected with the other end of the wind tunnel 3 is mounted between the lower support 41 and the upper support 43, the lower support 41 and the upper support 43 are both connected with the inner wall of the annular support beam 42, a mounting box 44 is arranged on the upper support 43, preferably, the upper support 43 and the mounting box 44 are integrally machined, a transmission set is mounted in the mounting box 44, the mounting box 44 is made of an explosion-proof material, and has a protection effect on the transmission set; the input shaft 8 penetrates through the upper bracket 43 to be connected with a transmission set, and the transmission set is connected with the input end of the motor set through an output shaft 9. When the wind wheel 11 rotates, the input shaft 8 is driven to rotate together, the input shaft 8 drives the output shaft 9 to rotate through the transmission set, and the output shaft 9 drives the motor set to work to convert wind energy into electric energy. The wind wheel 11 is used for reducing dynamic pressure and increasing static pressure, and the absorbed wind energy is utilized to rotate in a single direction, so that the wind energy is converted into mechanical energy and then into electric energy, and the energy transfer is realized.

As shown in fig. 1 to 6, in order to stably convert wind energy into electric energy, in this embodiment, the transmission set includes an upper bevel gear 45 and a lower bevel gear 48 which are arranged opposite to each other, an axial center of the lower bevel gear 48 is integrally installed in a manner of being matched with the input shaft 8, and an axial center of the upper bevel gear 45 is installed in a manner of being rotated and matched with the input shaft 8; an output bevel gear 47 is arranged between the upper bevel gear 45 and the lower bevel gear 48, the output bevel gear 47 is respectively meshed with the upper bevel gear 45 and the lower bevel gear 48, and the axis of the output bevel gear 47 is integrally matched with the output shaft 9. The three bevel gears of the output bevel gear 47, the upper bevel gear 45 and the lower bevel gear 48 are meshed, so that the input shaft 8 and the output shaft 9 are vertically arranged, and the transmission of mechanical energy and the change of the rotating direction are realized. The upper bevel gear 45 is not designed to output energy, and mainly has a stabilizing effect by being arranged symmetrically with the lower bevel gear 48. The output bevel gear 47, the upper bevel gear 45, the lower bevel gear 48 and the wind wheel 11 are all made of explosion-proof materials, so that safety and reliability are guaranteed.

As shown in fig. 1 to 6, in this embodiment, in order to realize the rotation operation of the input shaft 8, the input shaft 8 and the lower bracket 41, the upper bracket 43, and the upper bevel gear 45 are respectively mounted through a first bearing 410, a second bearing 49, and a third bearing 46.

As shown in fig. 1-6, in order to implement the installation of the output shaft 9, the shaft bracket 6 is installed in the middle of the output shaft 9, and the output shaft 9 and the shaft bracket 6 are installed in a matching manner through the fourth bearing 61, so that the shaft bracket 6 can support the output shaft 9, the possibility of generating large deflection of the output shaft 9 is reduced, the service life of the device is prolonged, and the output shaft 9 is prevented from generating serious deformation during operation. A fifth bearing is also arranged between the output shaft 9 and the mounting box 44, so that the output shaft 9 can rotate relative to the mounting box 44 conveniently.

As shown in fig. 1 to 6, in order to facilitate installation, disassembly and maintenance of the device by workers, the mounting table 5 includes a left mounting table 51 and a right mounting table 52 symmetrically disposed at two sides of the wind tunnel 3, and a front connecting bridge 54 and a rear connecting bridge 53 symmetrically disposed at two sides of the wind energy converter 4 are erected between the left mounting table 51 and the right mounting table 52. Preferably, the left mounting platform 51, the right mounting platform 52, the front connecting bridge 54 and the rear connecting bridge 53 are all in a trapezoidal structure, and the ladder frame 7 is arranged on two sides of the trapezoid. In this embodiment, the generator set is mounted on the left mounting table 51 or the right mounting table 52. Left mount table 51 and right mount table 52 are used for installing and placing generating set, and make things convenient for the installation of staff to this device, dismantle and overhaul, and ladder 7 is convenient for the staff upwards scrambles, dismantles and overhauls the generating set. The front connection bridge 54 and the rear connection bridge 53 are designed for facilitating the installation and servicing of the wind energy converter 4 and for placing replacement parts.

The utility model discloses a working process does:

1) the wind flow passing through the wind tunnel 3 impacts the wind wheel 11 to rotate the wind wheel 11, and the process is the conversion from wind energy to mechanical energy;

2) the input shaft 8 rotates along with the wind wheel 11, the input shaft 8 drives the lower bevel gear 48 to rotate, and the lower bevel gear 48 drives the output bevel gear 47 to move through the meshed bevel gear;

3) the rotation of the output bevel gear 47 drives the output shaft 9 to rotate, and the output shaft 9 drives the generator set to work to generate electricity, so that the conversion process of wind energy, mechanical energy and electric energy is realized.

The utility model discloses an installation does:

1) using the lifting function of the crane 10, an annular support beam 42 for supporting the wind energy converter 4 is first mounted to the upper end of the wind tunnel 3.

The wind wheel 11 is respectively connected with the input shaft 8, the lower bevel gear 48, the input shaft 8, the upper bevel gear 45 and the input shaft 8, wherein a third bearing 46 is arranged between the upper bevel gear 45 and the input shaft 8, and the precise distance between the lower bevel gear 48 and the upper bevel gear 45 is ensured by using the crane 10;

2) connecting the output bevel gear 47 with the output shaft 9, installing a fourth bearing 61 and a fifth bearing on the output shaft 9 to ensure the accurate relative positions, then installing a generator set, respectively meshing the output bevel gear 47 with the upper bevel gear 45 and the lower bevel gear 48, and keeping the correct relative positions by using the crane 10;

3) the mounting boxes 44 are combined, the meshed gear train structure is arranged in the mounting boxes, and corresponding bearings are respectively arranged between the input shaft 8 and the mounting boxes 44, the output shaft 9 and the mounting boxes 44, so that the efficient transmission of mechanical energy is ensured;

4) a shaft bracket 6 is arranged at the output shaft 9 and is matched with a fourth bearing 61;

5) mounting the generator set to the tail end of the output shaft 9;

6) the installation box 44, the shaft bracket 6 and the generator set are respectively fixed by the crane 10 to prevent the separation of certain components and the danger, the wind energy converter 4 and the connected generator set are simultaneously hoisted and installed on the annular supporting beam 42, the wind wheel 11 is installed on the input shaft 8, the generator set is placed on the left installation platform 51, and finally the connecting bridge is installed, and the installation is completed.

The utility model discloses a dismantlement process does:

1) the connecting bridge is taken down by a crane 10;

2) connecting the generator set, the shaft bracket 6 and the mounting box 44, and the lower end ring-shaped support beam 42, respectively, by using the crane 10, ready for hoisting;

3) after the wind energy converter 4, the generator set and the annular support beam 42 are removed, the wind energy converter 4 is separated from the annular support beam 42 on the premise that the relative positions of the structures in the wind energy converter 4 are ensured;

4) respectively taking down the wind wheel 11 on the input shaft 8 and taking down the generator set and the shaft bracket 6 on the output shaft 9;

5) opening the mounting box 44 to expose three bevel gear structures;

6) the relative position between the output shaft 9 and the input shaft 8 is changed, and the matching relation between the three bevel gears is separated;

7) respectively taking down the shaft support 6 and the output bevel gear 47 on the output shaft 9, and taking down the corresponding bearings; and respectively completing the disassembly of the bevel gear on the input shaft 8 and the corresponding bearing.

The utility model discloses an overhaul the process and do:

1) through the ladder frame 7 and the connecting bridge, people can conveniently climb above the device to inspect and maintain the generator set and the wind energy converter 4;

2) and (3) maintenance of the generator set: for some problems which can be solved on the generator set easily or need to be overhauled but can be solved, the maintenance can be directly carried out on the ladder frame 7; if the generator set needs to be replaced, the crane 10 is used to hoist the wind energy converter 4, the generator set and the annular support beam 42 together to a proper height for replacing the generator set;

3) maintenance of the drive train of the wind energy converter 4: the engagement and movement of the three conical teeth can be checked on the connecting bridge. A worker can open the mounting box 44 on the connecting bridge to repair and replace the three bevel gears;

4) and (3) maintenance of the wind wheel 11: it is necessary to simultaneously hoist the generator set, the wind energy converter 4 and the ring-shaped support beam 42 to half empty by the crane 10 and separate the lower bracket 41 of the lower end of the wind rotor 11 from the ring-shaped support beam 42, and then to perform maintenance and replacement of the wind rotor 11 by the crane 10.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words are not intended to have a special meaning unless otherwise stated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.

Claims (9)

1. An explosion-proof power generation device for recovering energy of mine return air flow is arranged at a return air wellhead and is characterized by comprising a wind tunnel, wherein one end of the wind tunnel is connected with a fan, the fan is correspondingly arranged with the return air wellhead, the other end of the wind tunnel is upwards bent and matched with a wind energy converter,

the wind energy converter is characterized in that the input end of the wind energy converter is connected with a wind wheel positioned at the outlet of a wind tunnel, the wind wheel is connected with a generator set through the output end of the wind energy converter, the wind wheel and the wind energy converter are made of explosion-proof materials, the lower side of the wind tunnel is erected and installed through a base set, the generator set is installed through an installation platform, and the installation platform is communicated with the ground through a step rack.

2. An explosion proof power generation device for recovering mine shaft return air flow energy as claimed in claim 1 wherein said wind tunnel is circular.

3. An explosion-proof power generation device for recovering energy of mine return air current as claimed in claim 2, wherein the wind energy converter comprises an input shaft, a lower bracket is rotatably mounted at the lower end of the input shaft, and the wind wheel is integrally mounted with the input shaft and positioned above the lower bracket;

an upper bracket is rotatably arranged in the middle of the input shaft, an annular supporting beam connected with the other end of the wind tunnel is arranged between the lower bracket and the upper bracket, the lower bracket and the upper bracket are both connected with the inner wall of the annular supporting beam,

the upper bracket is provided with an installation box, a transmission set is installed in the installation box, the input shaft penetrates through the upper bracket to be connected with the transmission set, and the transmission set is connected with the input end of the motor set through the output shaft.

4. The explosion-proof power generation device for recovering the energy of the mine return air flow as claimed in claim 3, wherein the transmission set comprises an upper conical tooth and a lower conical tooth which are oppositely arranged up and down, the axis of the lower conical tooth is matched and integrally installed with the input shaft, and the axis of the upper conical tooth is rotatably matched and installed with the input shaft;

the output bevel gear is arranged between the upper bevel gear and the lower bevel gear, the output bevel gear is respectively meshed with the upper bevel gear and the lower bevel gear, and the axis of the output bevel gear is integrally matched with the output shaft.

5. The explosion-proof power generation device for recovering energy of mine return air current of claim 4, wherein the input shaft and the lower support, the upper support and the upper bevel gear are respectively installed through a first bearing, a second bearing and a third bearing.

6. An explosion-proof power generation device for recovering energy of mine return air current as claimed in claim 5, wherein the output shaft is provided with a shaft bracket at the middle part, and the output shaft and the shaft bracket are arranged in a matching way through a fourth bearing.

7. The explosion-proof power generation device for recovering the energy of the mine return air flow as claimed in any one of claims 1 to 6, wherein the mounting platforms comprise a left mounting platform and a right mounting platform which are symmetrically arranged at two sides of the wind tunnel, and a front connecting bridge and a rear connecting bridge which are symmetrically arranged at two sides of the wind energy converter are erected between the left mounting platform and the right mounting platform.

8. The explosion-proof power generation device for recovering the energy of the mine return air flow of claim 7, wherein the left mounting platform, the right mounting platform, the front connecting bridge and the rear connecting bridge are all in a trapezoidal structure, and step frames are arranged on two sides of the trapezoid.

9. An explosion proof power generation apparatus for recovering mine return air flow energy as claimed in claim 8 wherein said generator set is mounted on either the left or right mounting table.

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