CN214366213U - Power generation system for wellhead natural gas - Google Patents
Power generation system for wellhead natural gas Download PDFInfo
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- CN214366213U CN214366213U CN202120230929.9U CN202120230929U CN214366213U CN 214366213 U CN214366213 U CN 214366213U CN 202120230929 U CN202120230929 U CN 202120230929U CN 214366213 U CN214366213 U CN 214366213U
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Abstract
The utility model provides a power generation system for wellhead natural gas, which comprises a gas well gas production tree; the gas well gas production tree outlet is communicated to a pipeline of a natural gas pipe network and is connected with a screw generator set in series, the screw generator set drives a generator, and the generator is electrically connected with a storage battery. The utility model discloses utilize the screw rod drilling tool can turn into mechanical energy with pressure energy, can replace original pressure reduction means to step down the natural gas, and can carry out pressure differential electricity generation and then abundant utilization pressure energy, and not only can reduce the pressure that each power generation screw rod bore, improve life, can also select the radical of the interior series connection power generation screw rod of screw rod generating set according to actual step down needs, further increased application scope, whole bearing capacity is strong, application scope is wide; the pressure energy of the natural gas is fully utilized; the structure is simple and durable; can generate larger power and reduce carbon emission.
Description
Technical Field
The utility model relates to a power generation system for well head natural gas.
Background
In the process of exploiting some gas wells, the outlet pressure of a wellhead gas production tree is up to 20-70 MPa, while the gathering and transportation pressure of a natural gas pipe network in China is only 5-6 MPa, so that the pressure is reduced to the pressure of a gas collection pipeline and then the gas collection pipeline is conveyed to a gathering and transportation station for centralized processing.
To most well head natural gas depressurization systems of publishing at present, what they mostly adopted is that the pressure-regulating valve carries out the throttle decompression, and it mainly has three shortcomings: firstly, the air-vent valve cost is higher, about ten million yuan, and cavitation erosion, erosion can cause the case to damage when continuously adjusting pressure moreover, lead to life lower, only about 3 months. Secondly, the pressure reduction can cause the temperature of the natural gas to be reduced, thereby generating the phenomenon of 'ice blockage' of the natural gas hydrate. Requiring additional energy consuming sources to heat it. Thirdly, the huge pressure energy of the high-pressure natural gas at the wellhead of the gas well is not recycled, so that a great deal of energy is wasted.
In the well drilling process, a screw drill is usually used for drilling the stratum, the screw drill mainly comprises a bypass valve, a hydraulic motor, a universal shaft and a transmission shaft, the screw drill drives a drill bit to perform drilling operation by converting inlet hydraulic pressure energy into mechanical energy of the transmission shaft, the technology is mature, and the screw drill is widely applied to the domestic and international petroleum fields.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a power generation system for well head natural gas, this a power generation system for well head natural gas utilizes screw rod drilling tool can turn into mechanical energy with pressure energy, can replace original pressure reduction means to step down the natural gas, and can carry out pressure differential electricity generation and then abundant utilization pressure energy, and whole bearing capacity is strong, and application scope is wide.
The utility model discloses a following technical scheme can realize.
The utility model provides a power generation system for wellhead natural gas, which comprises a gas well gas production tree; the gas well gas production tree outlet is communicated to a pipeline of a natural gas pipe network and is connected with a screw generator set in series, the screw generator set drives a generator, and the generator is electrically connected with a storage battery.
And a plurality of power generation screws are arranged in the screw generator set.
The power generation screw is connected in series with an outlet pipeline of a gas production tree of a gas well.
An electromagnetic switch valve is connected between the gas well gas production tree and the screw generator set.
And a filtering system is connected between the gas well gas production trees.
And a pressure regulating valve is connected in series between the screw generator set and the natural gas pipe network on an outlet pipeline of the gas well gas production tree.
The number of the power generation screws in the screw generator set is more than three.
The action position of the generator is multiple.
And the power generation screws in the screw generator set correspond to the action positions in the generator one by one.
The beneficial effects of the utility model reside in that: the pressure energy can be converted into mechanical energy by using the screw drilling tool, the natural gas can be depressurized instead of an original depressurization device, differential pressure power generation can be performed, the pressure energy can be fully utilized, the pressure borne by each power generation screw can be reduced, the service life is prolonged, the number of the power generation screws connected in series in the screw generator set can be selected according to the actual depressurization requirement, the application range is further enlarged, the integral pressure bearing capacity is strong, and the application range is wide; the pressure energy of the natural gas is fully utilized; the structure is simple and durable; can generate larger power and reduce carbon emission.
Drawings
FIG. 1 is a schematic connection diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the screw generator set of FIG. 1;
fig. 3 is a schematic structural view of the power generation screw of fig. 2.
In the figure: the gas well gas production system comprises a gas well gas production tree 1, an electromagnetic switch valve 2, a filtering system 3, a screw generator set 4, a power generation screw 5, a pressure regulating valve 6, a natural gas pipe network 7, a power generator 8, a storage battery 9, a screw generator set natural gas inlet 10, a screw generator set natural gas outlet 11, a prying frame 12, a power generation screw natural gas inlet 13, a bypass valve assembly 14, a screw motor 15, a universal shaft 16, a transmission shaft 17, a power generation screw natural gas outlet 18 and a transmission shaft connector 19.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
A power generation system for wellhead natural gas as shown in fig. 1 to 3 comprises a gas well gas production tree 1; the outlet of the gas well gas production tree 1 is communicated to a pipeline of a natural gas pipe network 7, a screw generator set 4 is connected in series, the screw generator set 4 drives a generator 8, and the generator 8 is electrically connected with a storage battery 9.
A plurality of power generation screws 5 are arranged in the screw generator set 4.
The power generation screw 5 is connected in series with an outlet pipeline of the gas well gas production tree 1.
An electromagnetic switch valve 2 is connected between the gas well gas production tree 1 and the screw generator set 4.
A filter system 3 is connected between the gas well gas production trees 1.
On the outlet pipeline of the gas well gas production tree 1, a pressure regulating valve 6 is connected in series between a screw generator set 4 and a natural gas pipe network 7.
The number of the power generation screws 5 in the screw generator set 4 is more than three.
The generator 8 has a plurality of operation positions.
The power generation screw rods 5 in the screw generator set 4 correspond to the action positions in the generator 8 one by one.
Example 1
By adopting the scheme, as shown in fig. 1 to 3, the gas well gas production system is formed by connecting a gas well gas production tree 1, an electromagnetic switch valve 2, a filtering system 3, a screw generator set 4, a pressure regulating valve 6, a generator 8 and a storage battery 9. The gas well gas production tree 1 is connected with the electromagnetic switch valve 2, the electromagnetic switch valve 2 is connected with the filtering system 3, the outlet of the filtering system 3 is connected with the gas inlet 10 of the first power generation screw of the screw generator set, the gas outlet of the filtering system is connected with the gas inlet of the second power generation screw, and all the power generation screws in the screw generator set are connected end to end in the mode. The air outlet 11 of the last screw is connected to the pressure regulating valve 6 and finally connected to the natural gas conveying pipe network 7. The transmission shaft of each screw rod is connected with a generator 8, and the generator set is connected with a storage battery 9 after being connected in parallel through cables.
As shown in fig. 2 and 3, the screw generator set 4 is composed of a plurality of power generation screws 5 mounted on the prying frame 12, and each power generation screw 5 comprises a power generation screw natural gas inlet 13, a bypass valve assembly 14, a screw motor 15, a universal shaft 16, a transmission shaft 17, a power generation screw natural gas outlet 18 and a transmission shaft joint 19.
In the power generation screw rod 5, high-pressure natural gas enters a screw rod motor 15 from an air inlet 13 through a bypass valve 14, then the gas enters the next stage from a power generation screw rod natural gas outlet 18 through a cardan shaft 16, and the pressure of the high-pressure natural gas is gradually reduced in the process, so that the effect of reducing the pressure is achieved. Meanwhile, the screw motor 15 converts the pressure energy of the high-pressure natural gas into mechanical energy through eccentric motion, the universal shaft 16 converts the eccentric motion of the motor into fixed shaft motion, and finally the generator impeller connected with the transmission shaft joint 19 is driven to rotate at high speed through the transmission shaft 17, so that the power generation effect is achieved.
For the whole system, high-pressure natural gas produced by a gas well gas production tree 1 enters a filtering system 11 through an electromagnetic switch valve 2 for filtering, the filtered pure natural gas enters a screw generator set 4, gas in each power generation screw drives a transmission shaft to rotate at a high speed, the pressure is reduced, and the pressure energy is converted into mechanical energy. The natural gas after pressure reduction is reduced to the pressure required by the pipe network through the pressure regulating valve 6, and then is introduced into the pipe network 7. High-pressure gas does work in the power generation screw rod 5 to push the transmission shaft to rotate at a high speed, the transmission shaft joint 19 drives the generator 8 to rotate at a high speed so as to realize the power generation function, and the electric quantity obtained by power generation is stored through the storage battery 9.
Claims (9)
1. A power generation system for wellhead natural gas, comprising a gas well gas production tree (1), characterized in that: the outlet of the gas well gas production tree (1) is communicated to a pipeline of a natural gas pipe network (7) and is connected with a screw generator set (4) in series, the screw generator set (4) drives a generator (8), and the generator (8) is electrically connected with a storage battery (9).
2. A power generation system for wellhead natural gas as claimed in claim 1 wherein: and a plurality of power generation screws (5) are arranged in the screw generator set (4).
3. A power generation system for wellhead natural gas as claimed in claim 2 wherein: the power generation screw (5) is connected in series with an outlet pipeline of the gas well gas production tree (1).
4. A power generation system for wellhead natural gas as claimed in claim 1 wherein: an electromagnetic switch valve (2) is connected between the gas well gas production tree (1) and the screw generator set (4).
5. A power generation system for wellhead natural gas as claimed in claim 1 wherein: and a filtering system (3) is connected between the gas well gas production tree (1) and the screw generator set (4).
6. A power generation system for wellhead natural gas as claimed in claim 1 wherein: and a pressure regulating valve (6) is connected in series between the screw generator set (4) and the natural gas pipeline network (7) on an outlet pipeline of the gas well gas production tree (1).
7. A power generation system for wellhead natural gas as claimed in claim 2 wherein: the number of the power generation screws (5) in the screw generator set (4) is more than three.
8. A power generation system for wellhead natural gas as claimed in claim 1 wherein: the generator (8) has a plurality of action positions.
9. A power generation system for wellhead natural gas as claimed in claim 2 wherein: the power generation screw rods (5) correspond to the action positions one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120230929.9U CN214366213U (en) | 2021-01-27 | 2021-01-27 | Power generation system for wellhead natural gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120230929.9U CN214366213U (en) | 2021-01-27 | 2021-01-27 | Power generation system for wellhead natural gas |
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| CN214366213U true CN214366213U (en) | 2021-10-08 |
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| CN202120230929.9U Active CN214366213U (en) | 2021-01-27 | 2021-01-27 | Power generation system for wellhead natural gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761732A (en) * | 2021-01-27 | 2021-05-07 | 贵州航天天马机电科技有限公司 | Series screw type natural gas depressurization power generation system |
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2021
- 2021-01-27 CN CN202120230929.9U patent/CN214366213U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761732A (en) * | 2021-01-27 | 2021-05-07 | 贵州航天天马机电科技有限公司 | Series screw type natural gas depressurization power generation system |
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