Natural gas separator device for generating power by using pressure difference of natural gas

Abstract

A natural gas separator device utilizing natural gas differential pressure to generate power relates to the technical field of natural gas power generation, and comprises a bottom plate, a support frame, a cyclone separator, a rotating shaft, a gearbox and a generator, the support frame, the gearbox and the generator are sequentially arranged above the bottom plate from left to right, the cyclone separator is arranged on the support frame, the cyclone separator is arranged above the gearbox, and the rotating shaft is arranged on the rotating shaft. A rotating shaft is rotatably connected in the cyclone separator, blades are distributed on the side face of the rotating shaft, the lower end of the rotating shaft is connected with a gearbox input shaft, and a gearbox output shaft is connected with a generator rotor. The rotating shaft arranged in the cyclone separator drives the gearbox, the gearbox drives the power generator, power is generated in the process of depressurizing and purifying natural gas, and the power generation efficiency is improved; and by arranging the dust collecting device, dust deposited in the cyclone separator can be conveniently cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas power generation, and in particular to a natural gas separator device for generating power by utilizing natural gas pressure difference. Background Art

[0002] The natural gas used in gas-fired power plants is generally equipped with a natural gas pressure regulating system. Under normal circumstances, the natural gas pressure supplied to gas-fired power plants is relatively high, about 3.6-4.2MPa. It needs to be reduced to 3.2MPa through the filter boiler and the pressure regulating valve before it is allowed to enter the gas turbine for combustion and work. Many links in the natural gas system of a gas-fired power plant need to be depressurized. The pressure energy is completely consumed in throttling and flow resistance, and no mechanical work is promoted, resulting in a large amount of natural gas pressure energy loss. Based on the cyclone separation filter commonly used in gas-fired power plants under the existing technology, a large amount of mechanical energy will also be wasted when the airflow passes through at high speed. Reasonable use of the above lost energy will greatly improve the energy utilization rate, which is in line with the basic national policy of energy conservation and emission reduction, and can also bring economic and social benefits. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the present invention discloses a natural gas separator device that utilizes the pressure difference of natural gas to generate electricity. The present invention arranges a support frame, a gearbox and a generator on a base plate, arranges a cyclone separator on the support frame, and arranges a rotating shaft on the cyclone separator, so as to achieve the purpose of generating electricity while reducing the pressure and purifying the natural gas.

[0004] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme:

[0005] A natural gas separator device for generating electricity by utilizing the pressure difference of natural gas comprises a base plate, a support frame, a cyclone separator, a rotating shaft, a gearbox and a generator. The support frame, the gearbox and the generator are arranged in sequence from left to right above the base plate. The cyclone separator is arranged on the support frame. The cyclone separator is arranged above the gearbox. A rotating shaft for rotation connection is arranged in the cyclone separator. Leaf pieces are distributed on the side of the rotating shaft. The lower end of the rotating shaft is connected to the input shaft of the gearbox. The output shaft of the gearbox is connected to the rotor of the generator.

[0006] The support frame is composed of a fixing ring and columns. The fixing ring is sleeved on the cyclone separator. The columns are distributed at the lower end of the fixing ring. The lower ends of the columns are connected to the upper end surface of the bottom plate.

[0007] The air inlet end of the cyclone separator is connected to the natural gas air inlet pipe, the exhaust end of the cyclone separator is connected to the natural gas exhaust pipe, and the dust exhaust port of the cyclone separator is provided with a dust collecting device.

[0008] The lower end of the rotating shaft passes through the dust discharge port of the cyclone separator. The rotating shaft is provided with two bearings from top to bottom. Both bearings are sleeved on the rotating shaft. Fixed rods are distributed on the sides of the two bearings. The ends of the fixed rods are connected to the inner wall of the cyclone separator.

[0009] The lower end of the rotating shaft is coaxially arranged with the high-speed shaft of the gearbox.

[0010] The gearbox low-speed shaft is coaxially arranged with the generator rotor, and a coupler is arranged between the gearbox low-speed shaft and the generator rotor.

[0011] The dust collecting device includes two symmetrically arranged dust collecting buckets, one side of the two dust collecting buckets is hinged, and the other side of the two dust collecting buckets is provided with a fixing plate, and the two fixing plates are fixed by bolts. The two dust collecting buckets are respectively arranged on both sides of the rotating shaft, the upper end surface of one dust collecting bucket is connected to the dust exhaust port of the cyclone separator, and the upper end surface of the other dust collecting bucket is provided with a sealing strip, and a sealing gasket is provided between the two dust collecting buckets.

[0012] The natural gas separator device for generating electricity by utilizing the pressure difference of natural gas described in the present invention is highly practical and very convenient to use. By arranging a rotating shaft in a cyclone separator to drive a gearbox, the gearbox drives a generator, and generates electricity in the process of reducing the pressure and purifying the natural gas, thereby improving the power generation efficiency. By arranging a dust collection device, it is convenient to clean the dust deposited in the cyclone separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0014] Figure 2 It is a front view of the present invention;

[0015] Figure 3 is a cross-sectional view of a cyclone separator of the present invention;

[0016] Figure 4 A top view of the dust collecting device of the present invention;

[0017] In the figure: 1, bottom plate; 2, cyclone separator; 3, fixing ring; 4, column; 5, exhaust pipe; 6, intake pipe; 7, dust collecting device; 8, rotating shaft; 9, gearbox; 10, generator; 11, coupler; 12, leaf; 13, bearing; 14, fixing rod; 15, dust collecting bucket; 16, fixing plate. DETAILED DESCRIPTION

[0018] The present invention can be explained in detail by the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0019] Combined with Figure 1-4The natural gas separator device for generating electricity by utilizing the pressure difference of natural gas comprises a base plate 1, a support frame, a cyclone separator 2, a rotating shaft 8, a gearbox 9 and a generator 10. A support frame, a gearbox 9 and a generator 10 are arranged above the base plate 1 from left to right in sequence. A cyclone separator 2 is arranged on the support frame. The cyclone separator 2 is arranged above the gearbox 9. A rotating shaft 8 connected in rotation is arranged inside the cyclone separator 2. Leaf pieces 12 are distributed on the side of the rotating shaft 8. Natural gas enters through the air inlet of the cyclone separator 2 and quickly passes through the leaf pieces 12, thereby driving the rotating shaft 8 to rotate at a high speed. The lower end of the rotating shaft 8 is connected to the input shaft of the gearbox 9, and the output shaft of the gearbox 9 is connected to the rotor of the generator 10.

[0020] The support frame is composed of a fixing ring 3 and columns 4. The fixing ring 3 is sleeved on the cyclone separator 2. The columns 4 are distributed at the lower end of the fixing ring 3. The lower end of the columns 4 is connected to the upper end surface of the bottom plate 1.

[0021] The air inlet end of the cyclone separator 2 is connected to the natural gas inlet pipe 6 , the exhaust end of the cyclone separator 2 is connected to the natural gas exhaust pipe 5 , and the dust exhaust port of the cyclone separator 2 is provided with a dust collecting device 7 .

[0022] The lower end of the rotating shaft 8 passes through the dust exhaust port of the cyclone separator 2. The rotating shaft 8 is provided with two bearings 13 from top to bottom. The two bearings 13 are both sleeved on the rotating shaft 8. The rotating shaft 8 rotates in the cyclone separator 2 through the bearings 13. Fixed rods 14 are distributed on the sides of the two bearings 13. The ends of the fixed rods 14 are connected to the inner wall of the cyclone separator 2.

[0023] The lower end of the rotating shaft 8 is coaxially arranged with the high-speed shaft of the gearbox 9 .

[0024] The low-speed shaft of the gearbox 9 is coaxially arranged with the rotor of the generator 10, and a coupler 11 is provided between the low-speed shaft of the gearbox 9 and the rotor of the generator 10. When the speed of the low-speed shaft of the gearbox 9 reaches a certain value, the coupler 11 automatically couples to drive the generator 10 to generate electricity, thereby realizing the conversion of pressure energy into electrical energy.

[0025] The dust collecting device 7 includes two symmetrically arranged dust collecting buckets 15, one side of the two dust collecting buckets 15 is hinged, and the other side of the two dust collecting buckets 15 is provided with a fixing plate 16, and the two fixing plates 16 are fixed by bolts. The two dust collecting buckets 15 are respectively arranged on both sides of the rotating shaft 8, and the upper end surface of the dust collecting bucket 15 on one side is connected to the dust exhaust port of the cyclone separator 2, and the upper end surface of the dust collecting bucket 15 on the other side is provided with a sealing strip, and a sealing gasket is provided between the two dust collecting buckets 15 to prevent dust from overflowing.

[0026] The embodiment described a natural gas separator device that uses natural gas pressure difference to generate electricity. When in use, the air inlet of the cyclone separator 2 is connected and fixed to the natural gas inlet pipe 6, and the exhaust port of the cyclone separator 2 is connected and fixed to the natural gas exhaust pipe 5. The two dust collecting buckets 15 at the dust exhaust port below the cyclone separator 2 are closed and fixed with bolts. After natural gas enters through the air inlet of the cyclone separator 2, it quickly passes through the leaf 12, thereby driving the rotating shaft 8 to rotate at a high speed. The rotating shaft 8 drives the low-speed shaft of the gearbox 9 to rotate. When the speed of the low-speed shaft of the gearbox 9 reaches a certain value, the coupler 11 automatically couples to drive the generator 10 to generate electricity, thereby realizing the conversion of pressure energy into electrical energy.

[0027] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and approaches to specifically implement the technical solution. The above is only a preferred implementation scheme of the present invention, but technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, and all of them are within the scope of protection of the present invention.

Claims

1. A natural gas separator device for generating electricity by utilizing natural gas pressure difference, comprising a base plate (1), a support frame, a cyclone separator (2), a rotating shaft (8), a gearbox (9) and a generator (10), wherein the support frame, the gearbox (9) and the generator (10) are arranged in sequence from left to right above the base plate (1), and characterized in that: A cyclone separator (2) is arranged on the support frame, and the cyclone separator (2) is arranged above a gearbox (9). A rotatably connected rotating shaft (8) is arranged inside the cyclone separator (2), and leaves (12) are distributed on the side of the rotating shaft (8). The lower end of the rotating shaft (8) is connected to the input shaft of the gearbox (9), and the output shaft of the gearbox (9) is connected to the rotor of the generator (10).

2. The natural gas separator device for generating electricity by utilizing natural gas pressure difference according to claim 1, characterized in that: The support frame is composed of a fixing ring (3) and a column (4); the fixing ring (3) is sleeved on the cyclone separator (2); the column (4) is distributed at the lower end of the fixing ring (3); and the lower end of the column (4) is connected to the upper end surface of the bottom plate (1).

3. The natural gas separator device for generating electricity by utilizing natural gas pressure difference according to claim 2, characterized in that: The air inlet end of the cyclone separator (2) is connected to a natural gas air inlet pipe (6), the air outlet end of the cyclone separator (2) is connected to a natural gas air outlet pipe (5), and a dust collecting device (7) is provided at the dust outlet of the cyclone separator (2).

4. The natural gas separator device for generating electricity by utilizing natural gas pressure difference according to claim 1, characterized in that: The lower end of the rotating shaft (8) passes through the dust discharge port of the cyclone separator (2). The rotating shaft (8) is provided with two bearings (13) from top to bottom. The two bearings (13) are both sleeved on the rotating shaft (8). The sides of the two bearings (13) are both provided with fixing rods (14). The ends of the fixing rods (14) are connected to the inner wall of the cyclone separator (2).

5. The natural gas separator device for generating electricity by utilizing natural gas pressure difference according to claim 4, characterized in that: The lower end of the rotating shaft (8) is coaxially arranged with the high-speed shaft of the gearbox (9).

6. The natural gas separator device for generating electricity by utilizing natural gas pressure difference according to claim 5, characterized in that: The low-speed shaft of the gearbox (9) and the rotor of the generator (10) are coaxially arranged, and a coupler (11) is arranged between the low-speed shaft of the gearbox (9) and the rotor of the generator (10).

7. The natural gas separator device for generating electricity by utilizing natural gas pressure difference according to claim 3, characterized in that: The dust collecting device (7) comprises two symmetrically arranged dust collecting buckets (15), one side of the two dust collecting buckets (15) is hinged, the other side of the two dust collecting buckets (15) is provided with a fixing plate (16), the two fixing plates (16) are fixed by bolts, the two dust collecting buckets (15) are respectively arranged on both sides of the rotating shaft (8), the upper end surface of one dust collecting bucket (15) is connected to the dust discharge port of the cyclone separator (2), the upper end surface of the other dust collecting bucket (15) is provided with a sealing strip, and a sealing gasket is provided between the two dust collecting buckets (15).

Images