An adjustable guide vane rock-carrying tail gas turbine power generation system

Abstract

The invention discloses an adjustable guide vane rock-carrying tail gas turbine power generation system, wherein a drill rod is mounted on an impactor, an impact drill bit is mounted on the bottom end of the drill rod, one end of a dust conveying pipe is connected to an air outlet on the impactor, and the other end is connected to an air inlet of a cyclone separator, a turbine generator is mounted on an air outlet of the cyclone separator, and the turbine generator comprises a guide vane adjustable turbine, a guide vane fixed turbine, a dust collecting housing, an impeller and a generator, the guide vane fixed turbine is fixed at the lower port of the dust collecting housing, the guide vane adjustable turbine is fixed at the lower port of the guide vane fixed turbine, the impeller is rotatably arranged in the dust collecting housing, and the output shaft of the generator is connected to the impeller. The invention can ensure efficient drilling and rock drilling operations under different working conditions, while enabling efficient recovery of excess tail gas and residual energy, thereby achieving a good energy-saving effect.

Description

Technical field:

[0002] The invention relates to an adjustable guide vane type rock-carrying tail gas turbine power generation system. Background technology:

[0004] In the field of rock drilling in mines, in order to improve the operating efficiency of the drilling rig, the rock cuttings at the bottom of the borehole are generally carried back to the ground through the impact exhaust gas. After the exhaust gas carrying the rock cuttings returns to the ground, the gas and the rock cuttings are separated by the action of a cyclone separator.

[0005] The gas used in rock drilling is output by the air compressor. The gas flow and pressure must be adjusted according to the changes in the rock formation. When the pressure and flow are low, the rock drilling speed is low. When the pressure and flow are high, although the rock drilling speed can be increased, the air compressor power required at this time is large, resulting in energy waste.

[0006] If a high-pressure, high-flow, high-power air compressor is used during rock drilling operations, the residual energy of the rock-carrying tail gas can be recovered while improving the drilling efficiency, then the problem of excessive energy consumption of the drilling rig at high drilling speeds can be solved. Because the characteristics of the rock formations are different, the rock drilling conditions are different. Under different rock drilling conditions, the size of the rock-carrying tail gas particles is different, and the residual energy of the rock-carrying tail gas is also different. To maintain efficient recovery of the residual energy of the rock-carrying tail gas under different rock formations and different working conditions, a residual energy recovery system that can adapt to different working conditions is required. Therefore, based on the current rock drilling technology, an adjustable guide vane turbine power generation system for rock drilling impact tail gas is proposed, which can ensure efficient drilling and rock drilling operations under different working conditions while efficiently recovering the excess tail gas residual energy, achieving a good energy-saving effect. Summary of the invention:

[0008] The present invention provides an adjustable guide vane type rock-carrying tail gas turbine power generation system in order to solve the problems existing in the above-mentioned prior art.

[0009] The technical solutions adopted in the present invention are:

[0010] An adjustable guide vane rock-carrying tail gas turbine power generation system comprises a turbine generator, a dust conveying pipe, a cyclone separator, a drill rod, an impactor and an impact drill bit, wherein the drill rod is mounted on the impactor, the impact drill bit is mounted on the bottom end of the drill rod, one end of the dust conveying pipe is connected to an air outlet on the impactor, and the other end is connected to an air inlet of a cyclone separator, and the turbine generator is mounted at an air outlet of the cyclone separator.

[0011] The turbine generator comprises a turbine with adjustable guide vanes, a turbine with fixed guide vanes, a dust collecting housing, an impeller and a generator, wherein the turbine with fixed guide vanes is fixed at the lower port of the dust collecting housing, the turbine with adjustable guide vanes is fixed at the lower port of the turbine with fixed guide vanes, the impeller is rotatably arranged in the dust collecting housing, and the output shaft of the generator is connected to the impeller;

[0012] The guide vane adjustable turbine includes a shell, a hydraulic swing cylinder, a drive ring, adjustable guide vanes and a guide cone. The guide cone is arranged in the shell, and the two are coaxially arranged. A plurality of adjustable guide vanes are placed between the guide cone and the shell and are evenly arranged along the circumferential direction of the guide cone. The two ends of each adjustable guide vane are respectively and correspondingly connected to the guide cone and the shell for rotation. The drive ring is sleeved on the outer side of the shell, and the end of each adjustable guide vane passes through the side wall of the shell and is connected to the drive ring. The hydraulic swing cylinder is fixed on the outer wall of the shell, and the swing shaft of the hydraulic swing cylinder is connected to the drive ring and drives the drive ring to swing along the axial direction of the guide cone. The drive ring drives all the adjustable guide vanes to rotate.

[0013] Furthermore, the driving ring is coaxially arranged with the shell, a plurality of connecting ears are arranged on the upper end surface of the driving ring, and a driving groove is arranged on the outer wall surface of the driving ring.

[0014] Furthermore, the outer end of the adjustable guide vane is fixedly connected with a driving connecting rod, which is hinged with the connecting ear through a pin shaft. A swing connecting rod is fixed to the swing shaft of the hydraulic swing cylinder, and one side end of the swing connecting rod extends into the driving groove.

[0015] Furthermore, a swing arm is provided on the swing connecting rod, and a roller is rotatably connected to the end of the swing arm. The axial direction of the roller is the same as the axial direction of the driving ring, and the roller is placed in the driving groove.

[0016] Furthermore, the adjustable guide vane includes a blade, a rotating shaft, a sleeve, a sealing gasket and a locking nut. The blade is fixed on the rotating shaft, the sleeve is passed through the shell, the inner end of the rotating shaft is rotatably connected to the guide cone through a bearing, and the outer end passes through the sleeve and is fixedly connected to the driving connecting rod. A sealing gasket is sleeved on the sleeve and the rotating shaft, and the two sealing gaskets are correspondingly located on the inner and outer sides of the shell. The locking nut is threadedly connected to the outer end of the rotating shaft, and the locking nut axially positions the sleeve and the driving connecting rod on the rotating shaft.

[0017] Furthermore, a rotation-stopping surface is provided on the rotating shaft, and a rotation-stopping hole is provided on the driving connecting rod.

[0018] Furthermore, the guide cone is a cylindrical structure with an open upper end and a sealed lower end, and the lower end surface of the guide cone is a spherical structure.

[0019] Furthermore, the guide vane fixed turbine comprises a fixed ring, guide vanes and a guide cover, the guide cover is coaxially arranged with the fixed ring, a plurality of guide vanes are fixed between the guide cover and the fixed ring, and the bottom end of the guide cover is inserted into the guide cone.

[0020] Furthermore, the power generation system also includes an energy storage device and an inverter, the turbine generator is connected to the inverter, and the inverter is connected to the energy storage device.

[0021] The present invention has the following beneficial effects:

[0022] The dust-carrying exhaust gas passes through the flow channel composed of the guide cone and the shell and blows toward the adjustable guide vane. The rotation of the adjustable guide vane can change the flow direction of the dust-carrying exhaust gas out of the adjustable guide vane. After the dust-carrying exhaust gas with changed flow direction flows toward the fixed guide vane, it blows toward the impeller. The different flow directions of the dust-carrying exhaust gas determine the speed of the impeller, thereby determining the power generation efficiency. The present invention can ensure efficient drilling and rock drilling operations under different working conditions, while efficiently recovering the excess exhaust gas energy, achieving a good energy-saving effect. Description of the drawings:

[0024] FIG1 is a structural diagram of the present invention.

[0025] FIG. 2 is a structural diagram of the turbine generator in the present invention.

[0026] FIG. 3 is an assembly structure diagram of a turbine with adjustable guide vanes and a turbine with fixed guide vanes in the present invention.

[0027] FIG. 4 is an exploded view of the assembly of the turbine with adjustable guide vanes and the turbine with fixed guide vanes in the present invention.

[0028] FIG5 is a structural diagram of the turbine with adjustable guide vanes according to the present invention.

[0029] FIG. 6 is a partial structural diagram of the turbine with adjustable guide vanes according to the present invention.

[0030] FIG. 7 is a structural diagram of the drive ring in the present invention.

[0031] FIG8 is a structural diagram of the swing connecting rod in the present invention.

[0032] FIG. 9 is an exploded view of the adjustable guide vane of the present invention.

[0033] FIG. 10 is a structural diagram of the adjustable guide vane in the present invention.

[0034] FIG. 11 is a cross-sectional view of the turbine with adjustable guide vanes according to the present invention.

[0035] FIG. 12 is a schematic diagram of the air intake of the turbine with adjustable guide vanes according to the present invention. Specific implementation method:

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] like Figures 1 to 12The present invention discloses an adjustable guide vane rock-carrying tail gas turbine power generation system, comprising a turbine generator 1, an energy storage device 2, an inverter 3, a dust conveying pipe 4, a cyclone separator 5, a drill rod 7, an impactor 8 and an impact drill bit 9. The drill rod 7 is installed on the impactor 8, the impact drill bit 9 is installed at the bottom end of the drill rod 7, and an air duct 10 is provided in the axial direction of the impact drill bit 9. One end of the dust conveying pipe 4 is connected to the air outlet on the impactor 8, and the other end is connected to the air inlet of the cyclone separator 5. The turbine generator 1 is installed at the exhaust port of the cyclone separator 5, the turbine generator 1 is connected to the inverter 3, and the inverter 3 is connected to the energy storage device 2.

[0039] The turbine generator 1 in the present invention includes a turbine with adjustable guide vanes 100, a turbine with fixed guide vanes 110, a dust collecting housing 120, an impeller 130 and a generator 170. The turbine with fixed guide vanes 110 is fixed at the lower port of the dust collecting housing 120, the turbine with adjustable guide vanes 100 is fixed at the lower port of the turbine with fixed guide vanes 110, the turbine with adjustable guide vanes 100, the turbine with fixed guide vanes 110 and the dust collecting housing 120 are coaxially arranged, the impeller 130 is rotatably arranged in the dust collecting housing 120, the generator 170 is fixed at the top of the dust collecting housing 120, and the output shaft of the generator 170 is connected to the impeller 130.

[0040] The above-mentioned guide vane adjustable turbine 100 includes a shell 101, a hydraulic swing cylinder 102, a drive ring 104, an adjustable guide vane 107 and a guide cone 180. The guide cone 180 is arranged in the shell 101, and the two are arranged coaxially. A plurality of adjustable guide vanes 107 are placed between the guide cone 180 and the shell 101, and the adjustable guide vanes 107 are evenly arranged along the circumferential direction of the guide cone 180. The two ends of each adjustable guide vane 107 are respectively rotatably connected to the guide cone 180 and the shell 101.

[0041] The driving ring 104 is sleeved on the outside of the shell 101, and the end of each adjustable guide vane 107 passes through the side wall of the shell 101 and is connected to the driving ring 104. The hydraulic swing cylinder 102 is fixed on the outer wall of the shell 101, and the swing axis of the hydraulic swing cylinder 102 is connected to the driving ring 104 and drives the driving ring 104 to swing along the axial direction of the guide cone 180. The driving ring 104 drives all the adjustable guide vanes 107 to rotate.

[0042] The driving ring 104 is coaxially arranged with the housing 101. To facilitate the installation of the structural parts, a plurality of connecting ears 1041 are provided on the upper end surface of the driving ring 104, and a driving groove 1042 is provided on the outer wall surface of the driving ring 104.

[0043] A driving link 105 is fixedly connected to the outer end of the adjustable guide vane 107 , and the driving link 105 is hinged to the connecting ear 1041 through a pin shaft. A swing link 103 is fixed to the swing shaft of the hydraulic swing cylinder 102 , and one side end of the swing link 103 extends into the driving groove 1042 .

[0044] The working principle of the turbine 100 with adjustable guide vanes is as follows: when working, the hydraulic swing cylinder 102 drives the swing connecting rod 103 to swing, the swing connecting rod drives the driving ring 104 to rotate, when the driving ring 104 rotates, it drives the driving connecting rod 105 to rotate, and the driving connecting rod 105 drives the adjustable guide vanes 107 to rotate.

[0045] In order to enable the swing link 103 to better drive the driving ring 104 , a swing arm 1031 is provided on the swing link 103 , and a roller 1032 is rotatably connected to the end of the swing arm 1031 . The axial direction of the roller 1032 is the same as the axial direction of the driving ring 104 , and the roller 1032 is placed in the driving groove 1042 .

[0046] The adjustable guide vane 107 of the present invention comprises a blade 1071, a rotating shaft 1072, a sleeve 1073, a sealing gasket 1074 and a locking nut 1075. The blade 1071 is fixed on the rotating shaft 1072. The sleeve 1073 is passed through the housing 101. The inner end of the rotating shaft 1072 is rotatably connected to the guide cone 180 through a bearing, and the outer end passes through the sleeve 1073 and is fixedly connected to the driving connecting rod 105. A sealing gasket 1074 is sleeved on each of the sleeve 1073 and the rotating shaft 1072. The two sealing gaskets 1074 are correspondingly located on the inner and outer sides of the housing 101. The locking nut 1075 is threadedly connected to the outer end of the rotating shaft 1072. The locking nut 1075 axially positions the sleeve 1073 and the driving connecting rod 105 on the rotating shaft 1072.

[0047] A sealing structure of a sealing gasket 1074 is provided on the adjustable guide vane 107 to ensure a sealing effect.

[0048] In order to facilitate the connection reliability between the rotating shaft 1072 and the driving connecting rod 105, a rotation-stopping surface is provided on the rotating shaft 1072, and a rotation-stopping hole 1055 is provided on the driving connecting rod 105. The rotation-stopping surface and the rotation-stopping hole 1055 cooperate with each other to ensure the stability of the structural assembly, and the driving connecting rod 105 and the rotating shaft 1072 are fixedly connected by screws.

[0049] The guide cone 180 in the present invention is a cylindrical structure with an open upper end and a sealed lower end, and the lower end surface of the guide cone 180 is a spherical structure. The spherical structure guides the dust-carrying exhaust gas.

[0050] The guide vane fixed turbine 110 comprises a fixing ring 1101, guide vanes 1102 and a guide cover 1103. The guide cover 1103 is coaxially arranged with the fixing ring 1101. A plurality of guide vanes 1102 are fixed between the guide cover 1103 and the fixing ring 1101. The bottom end of the guide cover 1103 is inserted into the guide cone 180. The fixing ring 1101 is fixedly connected to the housing 101.

[0051] The dust-carrying exhaust gas passes through the flow channel formed by the guide cone 180 and the housing 101 and blows toward the adjustable guide vane 107. The rotation of the adjustable guide vane 107 can change the flow direction of the dust-carrying exhaust gas out of the adjustable guide vane 107. After the dust-carrying exhaust gas with changed flow direction flows toward the fixed guide vane, it blows toward the impeller 130. The different flow directions of the dust-carrying exhaust gas determine the speed of the impeller 130, thereby determining the power generation efficiency.

[0052] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. An adjustable guide vane rock-carrying tail gas turbine power generation system, comprising a turbine generator (1), a dust conveying pipe (4), a cyclone separator (5), a drill rod (7), an impactor (8) and an impact drill bit (9), wherein the drill rod (7) is mounted on the impactor (8), the impact drill bit (9) is mounted at the bottom end of the drill rod (7), one end of the dust conveying pipe (4) is connected to an air outlet on the impactor (8), and the other end is connected to an air inlet of the cyclone separator (5), and the turbine generator (1) is mounted at the air outlet of the cyclone separator (5), characterized in that: The turbine generator (1) comprises a turbine with adjustable guide vanes (100), a turbine with fixed guide vanes (110), a dust collecting housing (120), an impeller (130) and a generator (170); the turbine with fixed guide vanes (110) is fixed to the lower port of the dust collecting housing (120); the turbine with adjustable guide vanes (100) is fixed to the lower port of the turbine with fixed guide vanes (110); the impeller (130) is rotatably disposed in the dust collecting housing (120); and the output shaft of the generator (170) is connected to the impeller (130); The guide vane adjustable turbine (100) comprises a housing (101), a hydraulic swing cylinder (102), a drive ring (104), an adjustable guide vane (107) and a guide cone (180); the guide cone (180) is disposed in the housing (101) and the two are coaxially arranged; a plurality of adjustable guide vanes (107) are disposed between the guide cone (180) and the housing (101) and are evenly arranged along the circumferential direction of the guide cone (180); two ends of each adjustable guide vane (107) are respectively rotatably connected to the guide cone (180) ) and a housing (101), a driving ring (104) is sleeved on the outer side of the housing (101), a distal end of each adjustable guide vane (107) passes through a side wall of the housing (101) and is connected to the driving ring (104), a hydraulic swing cylinder (102) is fixed to the outer wall of the housing (101), and a swing shaft of the hydraulic swing cylinder (102) is connected to the driving ring (104) and drives the driving ring (104) to swing along the axial direction of the guide cone (180), and the driving ring (104) drives all the adjustable guide vanes (107) to rotate; The driving ring (104) is coaxially arranged with the housing (101); a plurality of connecting ears (1041) are provided on the upper end surface of the driving ring (104); and a driving groove (1042) is provided on the outer wall surface of the driving ring (104); The outer end of the adjustable guide vane (107) is fixedly connected to a driving connecting rod (105), the driving connecting rod (105) is hinged to the connecting ear (1041) via a pin shaft, a swing connecting rod (103) is fixed to the swing shaft of the hydraulic swing cylinder (102), and one side end of the swing connecting rod (103) extends into the driving groove (1042); The power generation system further comprises an energy storage device (2) and an inverter (3); the turbine generator (1) is connected to the inverter (3), and the inverter (3) is connected to the energy storage device (2).

2. The adjustable guide vane rock-carrying tail gas turbine power generation system according to claim 1, characterized in that: The swing link (103) is provided with a swing arm (1031), and a roller (1032) is rotatably connected to the end of the swing arm (1031). The axial direction of the roller (1032) is the same as the axial direction of the drive ring (104), and the roller (1032) is placed in the drive groove (1042).

3. The adjustable guide vane rock-carrying tail gas turbine power generation system according to claim 2, characterized in that: The adjustable guide vane (107) comprises a blade (1071), a rotating shaft (1072), a shaft sleeve (1073), a sealing gasket (1074) and a locking nut (1075); the blade (1071) is fixed to the rotating shaft (1072); the shaft sleeve (1073) is inserted into the housing (101); the inner end of the rotating shaft (1072) is rotatably connected to the guide cone (180) via a bearing; the outer end passes through the shaft sleeve (1073) and is connected to the guide cone (180). The driving connecting rod (105) is fixedly connected, and a sealing gasket (1074) is sleeved on the shaft sleeve (1073) and the rotating shaft (1072). The two sealing gaskets (1074) are respectively located on the inner and outer sides of the housing (101). The locking nut (1075) is threadedly connected to the outer end of the rotating shaft (1072). The locking nut (1075) axially positions the shaft sleeve (1073) and the driving connecting rod (105) on the rotating shaft (1072).

4. The adjustable guide vane rock-carrying tail gas turbine power generation system according to claim 3, characterized in that: A rotation-stopping surface is provided on the rotating shaft (1072), and a rotation-stopping hole (1055) is provided on the driving connecting rod (105).

5. The adjustable guide vane rock-carrying tail gas turbine power generation system according to claim 1, characterized in that: The guide cone (180) is a cylindrical structure with an open upper end and a sealed lower end, and the lower end surface of the guide cone (180) is a spherical structure.

6. The adjustable guide vane rock-carrying tail gas turbine power generation system according to claim 5, characterized in that: The guide vane fixed turbine (110) comprises a fixing ring (1101), guide vanes (1102) and a guide cover (1103); the guide cover (1103) and the fixing ring (1101) are coaxially arranged; a plurality of guide vanes (1102) are fixed between the guide cover (1103) and the fixing ring (1101); and the bottom end of the guide cover (1103) is inserted into a guide cone (180).

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