CN105465604A - Compressed natural gas releasing device and power generation method employing pressure potential - Google Patents
Compressed natural gas releasing device and power generation method employing pressure potential Download PDFInfo
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- CN105465604A CN105465604A CN201610003641.1A CN201610003641A CN105465604A CN 105465604 A CN105465604 A CN 105465604A CN 201610003641 A CN201610003641 A CN 201610003641A CN 105465604 A CN105465604 A CN 105465604A
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- natural gas
- compressed natural
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- heat exchange
- releasing device
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 204
- 239000003345 natural gas Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010248 power generation Methods 0.000 title abstract 4
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 31
- 238000009792 diffusion process Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 15
- 239000011435 rock Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008786 sensory perception of smell Effects 0.000 description 1
- RAOIDOHSFRTOEL-UHFFFAOYSA-N tetrahydrothiophene Chemical compound C1CCSC1 RAOIDOHSFRTOEL-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/036—Very high pressure (>80 bar)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/07—Generating electrical power as side effect
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a compressed natural gas releasing device and a power generation method employing pressure potential. The compressed natural gas releasing device comprises a compressed natural gas heat exchange filtering device, wherein the back of the compressed natural gas heat exchange filtering device is connected with power generation device components, and the compressed natural gas heat exchange filtering device is arranged between two voltage regulators, and releases pressure in a pipeline through a releasing pipeline. The problem that compressed natural gas equipment completely depends on an electric network is solved, and the purpose that the compressed natural gas equipment can employ own compressed natural gas differential pressure for power generation is realized.
Description
Technical field
The invention belongs to compressed natural gas pressure-reducing gas technical field, relate to a kind of compressed natural gas releasing device, the invention still further relates to a kind of compressed natural gas pressure potential that utilizes and carry out the method generated electricity.
Background technique
Along with the continuous popularization of rock gas, with the various encouragement policies of government to clean energy resource, gas-fired equipment manufacturing industry is also thereupon fast-developing, because gas ductwork temporarily also cannot cover comprehensively, so the application of compressed natural gas is also more and more wider, corresponding compressed natural gas equipment also gets more and more.
In the using process of compressed natural gas, there is following shortcoming: the pressure potential of compressed natural gas does not utilize, cause the waste of large energy; The power supply of compressed natural gas release device relies on electrical network completely, there is the potential safety hazard because external power grid powerup issue causes; Remote districts or complex working condition, because connecing TV university amount adding users cost, even can not use rock gas too greatly because connecing electric difficulty.
Therefore the equipment for a kind of recyclable excess pressure potential energy using the user that compressed natural gas is fuel to research and develop and in order to generate electricity, reduce the potential safety hazard brought because of electrical network problem, the user simultaneously for being inconvenient to connect electricity provides the solution using compressed natural gas.
Summary of the invention
The object of this invention is to provide a kind of compressed natural gas releasing device, solve the problem that compressed natural gas equipment relies on electrical network completely.
The present invention also aims to provide a kind of method utilizing pressure potential to generate electricity, achieve compressed natural gas equipment and self compressed natural gas excess pressure difference can be utilized to carry out the object generated electricity.
The technical solution adopted in the present invention is, a kind of compressed natural gas releasing device, comprise compressed natural gas heat exchange filtrating equipment, electricity generating device assembly is connected with after compressed natural gas heat exchange filtrating equipment, compressed natural gas heat exchange filtrating equipment is arranged between two pressure governors, and compressed natural gas heat exchange filtrating equipment carrys out the pressure in diffuse channel by diffuse channel; Described compressed natural gas heat exchange filtrating equipment, is included in high pressure filter, heat exchanger and diffuse channel that compressed natural gas pipeline sets gradually, is wherein provided with one-level pressure governor between high pressure filter and heat exchanger.
Feature of the present invention is also,
Wherein compressed natural gas heat exchange filtrating equipment is by two or more, and parallel setting, and compressed natural gas heat exchange filtrating equipment is also provided with some pressure gauges, thermometer, differential pressure indicator and flowmeter.
Wherein compressed natural gas pipeline is provided with a high-pressure ball valve between every two parts.
Wherein electricity generating device assembly comprises 2 bearings be arranged in compressed natural gas pipeline, is provided with impeller between 2 bearings, and impeller is connected with 2 bevel gears matched, and 2 bevel gears drive explosion-proof power generator by stuffing box bearing.
Wherein 2 bevel gears change the rotation of impeller and pipeline parallel direction into rotation with pipeline Vertical direction.
Connect same belt pulley after stuffing box bearing wherein between 2 compressed natural gas heat exchange filtrating equipments on respective compressed natural gas pipeline, belt pulley is connected with explosion-proof power generator.
Wherein the outlet of compressed natural gas heat exchange filtrating equipment is also provided with flowmeter, and flowmeter is arranged between second voltage regulation device low pressure diffusion valve group, after second voltage regulation device is arranged on electricity generating device assembly.
Another technological scheme of the present invention is, a kind of method utilizing pressure potential to generate electricity, comprises the following steps:
Step 1, obtains the compressed natural gas that can be used for generating electricity, and is exported through heat exchange and filtration by compressed natural gas;
Step 2, by the compressed natural gas of obtain in step 1 available and generating through a slice impeller, utilizes the pressure difference impeller of impeller both sides to rotate;
Step 3, the impeller of rotation drives explosion-proof power generator running, realizes the object of generating.
Its feature is also,
Wherein in step 1, the incoming pressure of compressed natural gas is 0.5-22MPa, and input temp is-20-45 DEG C, and input flow rate is 0-5000Nm/h
3.
The delivery pressure of wherein available in step 1 compressed natural gas is 0.2-0.4MPa, and output temperature is 5-15 DEG C, and output flow is 0-5000Nm/h
3.
The invention has the beneficial effects as follows, natural gas via cross Emergeny Cutoff Valves, filter, heat exchanger after by pressure governor be adjusted to electrification component need inlet pressure electrification component by throttling, pressure potential is converted into kinetic energy, swiftly flowing air-flow impeller fast rotational, kinetic transformation is electric energy by impeller drive electrical generators.Monitor pressure governor to require to regulate generated energy according to user, gaseous-pressure is adjusted to user and uses pressure by pressure governor subsequently simultaneously, uses through flowmeter metering and device for adding odor supply user.The present invention effectively make use of the pressure potential of rock gas; Enable rock gas release device utilize self generating, and do not need to access electrical network, decrease the potential safety hazard of access electrical network; And rock gas can be provided for user from far-off regions.
For residual air during guarantee CNG sled car low pressure is unloaded as far as possible to the greatest extent, ensured gas supply flow again; Voltage-regulating system is set to two entrance and double loop; Two-way pressure-control circuit can separate while work, again can be mutually for subsequent use.For ensureing that two-way can distinguish automatic start-stop, and can work simultaneously; When outlet pressure reaches capping, automatically stop air feed; When outlet pressure is lower than setting lower limit, automatically open air feed; Be provided with pressure transmitter in ingress, every road, every one-level pressure governor instrument wind ingress, road arranges solenoid valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of compressed natural gas releasing device of the present invention;
Fig. 2 is the plan view of a kind of compressed natural gas releasing device of the present invention;
Fig. 3 is the structural representation of heat exchanger in a kind of compressed natural gas releasing device of the present invention;
Fig. 4 is the plan view of heat exchanger in a kind of compressed natural gas releasing device of the present invention;
Fig. 5 is the structural representation of one-level heat exchanging tube in a kind of compressed natural gas releasing device of the present invention;
Fig. 6 is the plan view of one-level heat exchanging tube in a kind of compressed natural gas releasing device of the present invention;
Fig. 7 is the structural representation of secondary heat exchange pipe in a kind of compressed natural gas releasing device of the present invention;
Fig. 8 is the plan view of secondary heat exchange pipe in a kind of compressed natural gas releasing device of the present invention;
Fig. 9 is the structural representation of electricity generating device assembly in a kind of compressed natural gas releasing device of the present invention.
In figure, 1. inlet high pressure flange, 2. instrument block valve, 3. high-pressure ball valve, 4. Emergeny Cutoff Valves, 5. high pressure filter, 6. one-level pressure governor, 7. heat exchanger, 8. chassis, 9. in, press diffusion valve group, 10. electricity generating device assembly, 11. explosion-proof power generators, 12. diffuse channels, 13. second voltage regulation devices, 14. Low pressure valves, 15. flowmeters, 16. low pressure diffusion valve groups, 17. one-level heat exchanging tubes, 18. secondary heat exchange pipes, 19. heat exchanger inner drums, 20. heat-exchanger heat-insulating layers, 21. heat exchanger exterior bowls, 22. electric heaters, 23. interface of the level gauge, 24. thermometer bosses, 25. sewage draining exits, 26. bottom plate of heat exchanger, 27. belt pulleys, 28. stuffing box bearings, 29. bevel gears, 30. bearings, 31. impellers.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The invention provides a kind of compressed natural gas releasing device, as shown in Figure 1, comprise heat exchange filtrating equipment, heat exchange filtrating equipment comprises high pressure filter 5, and high pressure filter 5 connects an one-level pressure governor 6 below, and one-level pressure governor 6 connects heat exchanger 7 below; And high pressure filter 5 is disposed with inlet high pressure flange 1, instrument block valve 2, high-pressure ball valve 3 and Emergeny Cutoff Valves 4 above; Compressed natural gas pipeline presses diffusion valve group 9 after heat exchanger 7 in one; Middle pressure diffusion valve group 9 is disposed with diffuse channel 12 and electricity generating device assembly 10 below; Electricity generating device assembly 10 is connected with explosion-proof power generator 11; Electricity generating device assembly 10 is also provided with second voltage regulation device 13 below, and heat exchanger 7 is arranged between one-level pressure governor 6 and second voltage regulation device 13; Second voltage regulation device 13 is provided with flowmeter 15 below, and the both sides of flowmeter 15 are provided with Low pressure valve 14, and flowmeter 15 is also provided with low pressure diffusion valve group 16 below; The said equipment is all fixedly installed on chassis 8.
The device arranged before Low pressure valve 14 is as shown in Figure 2 arranged with more than 2 groups or 2 groups in parallel, and the electricity generating device assembly 10 of adjacent 2 groups of devices connects an explosion-proof power generator 11 jointly.
Be illustrated in figure 3 the cut-away view of heat exchanger 7, heat exchanger 7 comprises the peripheral heat exchanger exterior bowl 21 arranged, heat exchanger exterior bowl 21 inner sleeve has heat-exchanger heat-insulating layer 20 and heat exchanger inner drum 19, the top of the periphery of heat exchanger is also provided with interface of the level gauge 23 and thermometer boss 24, and the bottom of the periphery of heat exchanger is also provided with sewage draining exit 25 and electric heater 22; Two pole heat exchanging tubes 18 of spiral one-level heat exchanging tube 17 and U-shaped are provided with in heat exchanger inner drum 19; As shown in Figure 4, the bottom of heat exchanger 7 is provided with bottom plate of heat exchanger 26.
The interface of one-level heat exchanging tube 17 upward as shown in Figure 5, arranges from top to bottom under screw, and the cross section of one-level heat exchanging tube 17 is circular as shown in Figure 6.
Secondary heat exchange pipe 18 is that the heat exchanging tube of 2 U-shapeds combines as shown in Figure 7, and the cross section of secondary heat exchange pipe 18 is square as shown in Figure 8.
Be illustrated in figure 9 generator assembly 10 to comprise, be included in 2 bearings 30 arranged in compressed natural gas pipeline, impeller 31 is provided with between 2 bearings 30, the pressure reduction of impeller 31 both sides forces impeller 31 to rotate, 2 bevel gears 29 are provided with after 2 bearings 30, wherein impeller 31 is connected with a bevel gear vertically arranged, and another bevel gear is horizontally disposed with and is connected with vertical bevel gear, the rotation in substantially horizontal is converted into the rotation on vertical direction; Horizontally disposed bevel gear vertically connects a stuffing box bearing 28 downwards, and stuffing box bearing 28 is connected with belt pulley 27 by connecting rod, and belt pulley 27 drives explosion-proof power generator 11 to generate electricity; When two or more compressed natural gas heat exchange filtrating equipment that be arranged in parallel, the stuffing box bearing 28 in the compressed natural gas pipeline of adjacent 2 compressed natural gas heat exchange filtrating equipments connects same belt pulley 27 and same explosion-proof power generator 11 by connecting tube.
Present invention also offers a kind of method utilizing pressure potential to generate electricity, its detailed process is, input compressed natural gas, its incoming pressure is 0.5-22MPa, and input temp is-20-45 DEG C, and input flow rate is 500-5000Nm/h
3, the compressed natural gas of input is carried out a heat exchange through heat exchanger, again the compressed natural gas through a heat exchange is carried out filtration, purification through high pressure filter afterwards, and then compressed natural gas is carried out secondary heat exchange, compressed natural gas afterwards, the compressed natural gas pipeline that compressed natural gas exports arranges electricity generating device, wherein compressed natural gas is provided with impeller in pipeline, and impeller both sides are all provided with bearing, the compressed natural gas of impeller both sides has pressure reduction, therefore can impeller rotate, the bevel gear vertically arranged be connected with impeller is driven after wheel rotation, the bevel gear of vertical setting mates with horizontally disposed bevel gear and is connected, rotation on the direction parallel with pipeline is changed into and the rotation in pipeline Vertical direction, be connected a connecting rod with the vertically disposed bevel gear of pipeline by the stuffing box bearing arranged on compressed natural gas pipeline, connecting rod is connected with belt pulley, and belt pulley drives explosion-proof power generator to rotate and generates electricity.
Use a kind of compressed natural gas releasing device of the present invention and the method that utilizes pressure potential generate electricity, the effect of Emergeny Cutoff Valves automatically cuts off when equipment occurs abnormal, thus guarantee equipment and personal safety; Filter for filtering out particulate matter in rock gas and other impurity, with the parts such as pressure governor, flowmeter in proterctive equipment itself and downstream; Heat exchanger to heated by natural gas in case the too low generation frozen block of temperature after pressure regulation; The entrance that pressure is adjusted to electrification component by pressure governor needs pressure, and for regulating pressure reduction before and after electrification component thus regulating generated energy; Flowmeter is for measuring the instantaneous and integrated flux of whole system, and auxiliary device for adding odor regulates odorizing amount simultaneously; Device for adding odor to adding smelly liquid (tetrahydrothiophene) in rock gas, thus reaches the safety installations allowing people just can be found leakage by sense of smell.
The using method of a kind of compressed natural gas releasing device of the present invention is, the compressed natural gas shipped by CNG tank car unloads gas flexible pipe by two-way can enter releasing device two-way pressure-control circuit respectively; Every road CNG inlet high pressure ball valve, filter, Emergeny Cutoff Valves in releasing device heat through one-level heat exchanging tube, the heating temperatures of compressed natural gas to 50-70 DEG C; Compressed natural gas, through filter, the contaminant filter in system pipeline, prevents impurity from entering regulator, causes pressure governor malfunctioning; Rock gas after filtration enters the pressure regulation of one-level regulator, is about 1.6MPa by pressure after the pressure regulation of 20MPa natural gas via one-level, through the heating of secondary heat exchange pipe, then the heating temperatures of compressed natural gas to about 10-20 DEG C; Then generated electricity by electrification component, then through second level regulator pressure regulation, pressure is adjusted to 0.2-0.4MPa; Then through metering, add smelly after send into downstream pipe network.
For ensureing that two-way can distinguish automatic start-stop, and can work simultaneously; When outlet pressure reaches capping, automatically stop air feed; When outlet pressure is lower than setting lower limit, automatically open air feed; Be provided with pressure transmitter in ingress, every road, every one-level pressure governor instrument wind ingress, road arranges solenoid valve; Its working procedure is as follows:
When a certain road inlet pressure does not reach lower bound 0.6MPa but this road flow can not meet downstream pipe network gas demand, and when another road inlet pressure does not reach lower bound; Device starts another road automatically, namely opens another road Emergeny Cutoff Valves, and two-way is air feed simultaneously;
When a certain road inlet pressure reaches lower bound 0.6MPa, device closes this road Emergeny Cutoff Valves automatically; If when another road inlet pressure does not reach lower bound; Device starts this road automatically, namely opens this road Emergeny Cutoff Valves and starts air feed;
When outlet pressure reaches in limited time, device closes this road first order regulator automatically, stops air feed;
When outlet pressure reaches lower bound, device opens this road first order regulator automatically, starts air feed;
For ensureing equipment safety operation, a road has this road of fault automatically to cut off; Another road automatically should be able to be opened and be carried out air feed.
CNG decompression unit every road entrance be provided with Emergeny Cutoff Valves and first order regulator I department, at pressure governor instrument wind entrance, explosion-proof two-bit triplet solenoid valve has been installed, made it possess to carry cutting function (i.e. every Lu Erdao cut-out).
Electric heating heat exchanger is provided with temperature transmitter; Outlet conduit set temperature transmitter and pressure transmitter; In sled, flammable gas alarm is set; Its working procedure is as follows: when working ways breaks down, as too low in gas temperature after pressure regulation, heat exchanger and pipe leakage, outlet pressure superelevation or the fault such as too low; Device is automatically closed this road and is entered head emergent cut-off valve and first order pressure governor, stops this road air feed; And automatically open another road, start air feed.
Claims (10)
1. a compressed natural gas releasing device, it is characterized in that, comprise compressed natural gas heat exchange filtrating equipment, electricity generating device assembly (10) is connected with after compressed natural gas heat exchange filtrating equipment, compressed natural gas heat exchange filtrating equipment is arranged between two pressure governors, and compressed natural gas heat exchange filtrating equipment is by diffuse channel (12) diffuse channel pressure;
Described compressed natural gas heat exchange filtrating equipment, be included in high pressure filter (5), heat exchanger (7) and diffuse channel (12) that compressed natural gas pipeline sets gradually, be wherein provided with one-level pressure governor (6) between high pressure filter (5) and heat exchanger (7).
2. a kind of compressed natural gas releasing device according to claim 1, it is characterized in that, described compressed natural gas heat exchange filtrating equipment is by two or more, and parallel setting, and compressed natural gas heat exchange filtrating equipment is also provided with some pressure gauges, thermometer, differential pressure indicator and flowmeter.
3. a kind of compressed natural gas releasing device according to claim 2, is characterized in that, described compressed natural gas pipeline is provided with a ball valve (3) between every two parts.
4. a kind of compressed natural gas releasing device according to claim 1, it is characterized in that, described electricity generating device assembly (10) comprises 2 bearings (30) be arranged in compressed natural gas pipeline, impeller (31) is provided with between 2 bearings (30), impeller (31) is connected with 2 bevel gears matched (29), and 2 bevel gears (29) drive explosion-proof power generator (11) by stuffing box bearing (28).
5. a kind of compressed natural gas releasing device according to claim 4, is characterized in that, described 2 bevel gears (28) change impeller (11) and the rotation of pipeline parallel direction into rotation with pipeline Vertical direction.
6. a kind of compressed natural gas releasing device according to claim 5, it is characterized in that, connect same belt pulley (27) after stuffing box bearing (28) between described 2 compressed natural gas heat exchange filtrating equipments on respective compressed natural gas pipeline, belt pulley (27) is connected with explosion-proof power generator (11).
7. any one compressed natural gas releasing device according to claim 1-6, it is characterized in that, the outlet of described compressed natural gas heat exchange filtrating equipment is also provided with flowmeter (15), flowmeter (15) is arranged between second voltage regulation device (13) and low pressure diffusion valve group (16), after second voltage regulation device (13) is arranged on electricity generating device assembly (10).
8. the method utilizing pressure potential to generate electricity, is characterized in that, comprises the following steps:
Step 1, obtains the compressed natural gas that can be used for generating electricity, and is exported through heat exchange and filtration by compressed natural gas;
Step 2, by step 1 to can be used for generate electricity compressed natural gas through a slice impeller, utilize the pressure difference impeller of impeller both sides to rotate;
Step 3, the impeller of rotation drives explosion-proof power generator running, realizes the object of generating.
9. a kind of method utilizing pressure potential to generate electricity according to claim 7, is characterized in that, in described step 1, the incoming pressure of compressed natural gas is 0.5-22MPa, and input temp is-20-45 DEG C, and input flow rate is 0-5000Nm/h
3.
10. a kind of method utilizing pressure potential to generate electricity according to claim 7, is characterized in that, the delivery pressure of compressed natural gas available in described step 1 is 0.2-0.4MPa, and output temperature is 5-15 DEG C, and output flow is 0-5000Nm/h
3.
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| CN201610003641.1A CN105465604A (en) | 2016-01-04 | 2016-01-04 | Compressed natural gas releasing device and power generation method employing pressure potential |
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| CN201610003641.1A CN105465604A (en) | 2016-01-04 | 2016-01-04 | Compressed natural gas releasing device and power generation method employing pressure potential |
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