CN109780206A - A kind of simple connecting shaft protective device for small miniature pressure energy of natural gas power generation - Google Patents
A kind of simple connecting shaft protective device for small miniature pressure energy of natural gas power generation Download PDFInfo
- Publication number
- CN109780206A CN109780206A CN201910037341.9A CN201910037341A CN109780206A CN 109780206 A CN109780206 A CN 109780206A CN 201910037341 A CN201910037341 A CN 201910037341A CN 109780206 A CN109780206 A CN 109780206A
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- natural gas
- screw thread
- power generation
- pressure energy
- connecting shaft
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000003345 natural gas Substances 0.000 title claims abstract description 45
- 230000001681 protective effect Effects 0.000 title claims abstract description 22
- 238000010248 power generation Methods 0.000 title claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 28
- 238000010168 coupling process Methods 0.000 claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 claims abstract description 28
- 239000003063 flame retardant Substances 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Measuring Fluid Pressure (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention discloses a kind of simple connecting shaft protective devices for small miniature pressure energy of natural gas power generation, including hollow protecting device for shaft coupler, information display device, screw thread pressed sealing device；The screw thread pressed sealing device is symmetrically connected to the both ends of the protecting device for shaft coupler by screw thread; the protecting device for shaft coupler is sealed at the shaft coupling between air motor and the opposite seal face of explosion-proof power generator and coating air motor and explosion-proof power generator by the screw thread pressed sealing device, and the fire-retardant gas of certain pressure is injected in the sealing inner cavity that the protecting device for shaft coupler, screw thread pressed sealing device, air motor and the opposite seal face of explosion-proof power generator are surrounded.The present invention, which has, is not necessarily to additionaling power, easy to operate, easy to maintain, steady operation and other merits, moreover it is possible to judge whether natural gas leaks, reduce artificial supervision, greatly improve pipe network operation safety, future can operate with entire natural gas pipe network pressure energy power generator.
Description
Technical field
The invention belongs to small miniature natural gas pipe network pressure energy power generation field of safety protection, and in particular to one kind is for small micro-
The simple connecting shaft protective device of type pressure energy of natural gas power generation.
Background technique
With the fast development of society, it is larger to have gradually replaced other pollutions as a kind of cleaning green energy resource for natural gas
The energy, become the main supply energy source in city.This also proposes more the operation management of pipeline network of fuel gas in city and Security Construction
High requirement.With the high speed development of China's economic society, the increasingly raising of living standards of the people, gas demand increasingly increases
Long, gas ductwork construction enters fast-developing period, so that fuel gas pressure-regulating box is regional throughout along the line.
Fuel gas pressure-regulating box is that regulator is placed in case body special, is set to building, and production district near living area, is held
The load adjusting task of atmospheric pressure.General pressure regulating box has the characteristics that compact-sized, technology maturation, takes up little area, so that it is in day
With extensive, enormous amount in right gas pipe network air supply system, runing time is longer.As city density increases, build up
Mesolow pressure regulating box by it is all kinds of face build encirclement, various potential security risks are also multiplied.
Simultaneously as replacement gas-fired equipment hardware device higher cost, to promote Gas Pressure Regulating Equipment security monitoring ability,
Therefore just gradually trend is universal for small miniature natural pipe network pressure energy power generator.It theoretically, can be in the position for having pressure regulating box
Carry out pressure energy power generation.But there is also the problems of dynamic seal structure gas leakage for the technology.Therefore, it is necessary to one kind simply to connect
Axis protective device arranges the more sufficient safeguard protection of the system increase while making full use of natural gas pipe network pressure energy
It applies, and the unobvious increase device space and use cost.
The pressure energy of natural gas in China is generally plug-in oil seal or gas source sealing using leakage prevention method at present,
Take up an area larger, higher cost, in terms of being not particularly suited for small miniature natural gas power.
Summary of the invention
Presented above it is an object of the invention to be directed to, current small miniature pipe network pressure energy of natural gas power generator is let out
Hidden danger and deficiency are leaked, a kind of simple connecting shaft guard method for small miniature pressure energy of natural gas power generation and device are provided, to reach
To preventing natural gas dynamic sealing from leaking, high-speed rotating component is protected using casing, prevents shaft coupling from being broken and splashes, improve system
It unites performance monitoring means, the purpose of and not increasing new security risk, and do not increase occupation area of equipment.
The technical solution of above-mentioned purpose is realized in invention are as follows:
A kind of simple connecting shaft protective device for small miniature pressure energy of natural gas power generation, protects dress including hollow shaft coupling
It sets, information display device, screw thread pressed sealing device；The screw thread pressed sealing device is symmetrically connected to described by screw thread
The both ends of axis device protective device, the protecting device for shaft coupler are sealed at pneumatic horse by the screw thread pressed sealing device
Reach between seal face that explosion-proof power generator is opposite and coat the shaft coupling of air motor and explosion-proof power generator, the shaft coupling
The sealing inner cavity that protective device, screw thread pressed sealing device, air motor and the opposite seal face of explosion-proof power generator are surrounded
In be injected with the fire-retardant gas of certain pressure；The outer wall of the protecting device for shaft coupler is arranged in the information display device connection
On, for monitoring real-time air pressure and temperature in the protecting device for shaft coupler.
Preferably, the protecting device for shaft coupler includes that both ends are provided with externally threaded casing, the thickness of described sleeve pipe
For 3-5mm, internal diameter is 5-10mm bigger than the outer diameter of the shaft coupling.
Preferably, between the length of the described sleeve pipe seal face more opposite than the air motor and explosion-proof power generator
Away from few 8-12mm.
Preferably, described sleeve pipe outer wall is provided with gas filler.
Preferably, the both ends of described sleeve pipe are provided with the external screw thread of 8-15mm.
Preferably, the material of described sleeve pipe includes metal, engineering plastics.
Preferably, the information display device includes temperature transmitter, pressure transmitter, is separately positioned on described sleeve pipe
On the outer wall of close end, for monitoring real-time air pressure and temperature in described sleeve pipe, this programme can show transmission pressure,
Temperature data, temperature can judge shaft coupling operation conditions, the degree of wear and release fracture for reacting shaft coupling temperature.
Pressure is for judging that the equipment is judged as natural gas leakage when pressure rises with the presence or absence of natural gas leaking phenomenon；Pressure decline
When, it is judged as smooth base.In addition, both transmitter datas can be effectively right by achievable real-time detection and data statistics
The service life of shaft coupling judges and predicts, maintenance maintenance replacement is reminded to prepare.
Preferably, the screw thread pressed sealing device includes internal threaded nut, seal washer, the internal threaded nut with
The external screw thread of described sleeve pipe end is tightly connected, the gasket snare in described sleeve pipe and be located at the internal threaded nut and
Between the contact surface of seal face.
Preferably, the seal washer is O-ring seal, the air motor and the opposite sealing of explosion-proof power generator
The annular seal groove matched with the seal washer is provided on end face.
Preferably, the fire-retardant gas includes nitrogen, helium, argon gas etc., and the pressure value of the fire-retardant gas is lower than day
Right gas exit pressure levels and it is higher than atmospheric environmental pressure value.
The present invention compared with the prior art and status have it is below the utility model has the advantages that
1, equipment implementation cost is lower, has multiple functions and realizes hazards prevention and early warning.Do not need it is additional production and
High-accuracy processing technology, the device is by the way that screw threads for fastening by shaft coupling and to be easy leakage sealed face and be placed on metallic conduit
In, for the natural gas that may be leaked, it is isolated on route of transmission, while utilizing the variation of equipment own temperature pressure data
Anticipation and early warning are carried out to accident.
2, package unit operation is simple, easy to maintain.The device can be run without increasing manual operation, it is only necessary to periodically
It repairs.It can also judge whether natural gas leaks, reduce artificial supervision, greatly improve pipe network operation safety.Future
It can gradually promote for small miniature natural gas pipe network pressure energy power generator, improve the safety guarantee degree of the technology.
3, package unit occupied area is small, has a wide range of application.The device will only increase casing outside former shaft coupling, and by
In not needing plus auxiliary device, can be carried out under various operating conditions using.
Detailed description of the invention
Fig. 1 is a kind of simple connecting shaft protective device figure for small miniature pressure energy of natural gas power generation.
Fig. 2 is pipe sleeve and nut compact connecting structure schematic diagram.
Show in figure: 1- high-pressure natural gas import, 2- air motor, 3- seal face, 4- temperature transmitter, 5- pressure become
Send device, 6- shaft coupling, 7- explosion-proof power generator, 8- internal threaded nut, 9- external screw thread, 10- casing, 11- gas filler, 12- is close
Seal washer, the outlet of 13- low pressure natural gas.
Specific embodiment
For a better understanding of the invention, present invention will be further explained below with reference to the attached drawings and examples, but the present invention
Claimed range is not limited to the scope of the embodiments.
With in certain natural gas line pressure regulating box, for 200W micro pressure energy power generation project, the pipe natural gas flow is about
For 100Nm3/ h, inlet pressure 0.8MPa, 0.1 MPa after decompression.
It does work as shown in Figure 1, natural gas enters air motor 2 by high-pressure natural gas import 1, is driven by shaft coupling 6
Explosion-proof power generator 7, the electricity of the capable of emitting 200W of explosion-proof power generator 7.Natural gas after expansion by low pressure natural gas outlet 13 into
Enter downstream gas ductwork.Pressure energy of natural gas generating equipment monnolithic case is about 1m long, 0.8m wide, 0.6m high.
To achieve the purpose of the present invention, the present embodiment adopts the following technical scheme that
As shown in Figure 1, a kind of simple connecting shaft protective device for small miniature pressure energy of natural gas power generation, including hollow shaft coupling
Device protective device, information display device, screw thread pressed sealing device；The screw thread pressed sealing device is symmetrically connected by screw thread
At the both ends of the protecting device for shaft coupler, the protecting device for shaft coupler passes through the screw thread pressed sealing device sealed set
Between the opposite seal face 3 of air motor 2 and explosion-proof power generator 7 and coat air motor 2 and explosion-proof power generator 7 shaft coupling
Device 6, the protecting device for shaft coupler, screw thread pressed sealing device, air motor 2 and the opposite seal face 3 of explosion-proof power generator 7
The fire-retardant gas of certain pressure is injected in the sealing inner cavity surrounded；The information display device connection is arranged in the shaft coupling
On the outer wall of device protective device, for monitoring real-time air pressure and temperature in the protecting device for shaft coupler.
The protecting device for shaft coupler includes that both ends are provided with the externally threaded casing 10 of 10mm long, the material of described sleeve pipe 10
Material is stainless steel tube, it is to be understood that the enough engineering plastics of intensity or other conjunctions also can be used in the material of described sleeve pipe 10
Suitable material.Described sleeve pipe 10 with a thickness of 5mm, internal diameter is 5mm bigger than the outer diameter of the shaft coupling 6.The length of described sleeve pipe 10
Spacing between the seal face 3 more opposite than the air motor 2 and explosion-proof power generator 7 is 10mm few.10 outer wall of described sleeve pipe is set
It is equipped with gas filler 11, is conveniently injected with the fire-retardant gas of certain pressure.
The information display device includes temperature transmitter 4, pressure transmitter 5, is separately positioned on outside described sleeve pipe 10
On wall, for monitoring real-time air pressure and temperature in described sleeve pipe 10, in the present embodiment, temperature transmitter 4, pressure transmitter 5
It can show that pressure in casing 10, temperature data, temperature can judge that shaft coupling 6 runs shape for reacting 6 temperature of shaft coupling
Condition, the degree of wear and release fracture.Pressure is for judging that the equipment whether there is natural gas leaking phenomenon, when pressure rises,
It is judged as natural gas leakage；When pressure declines, it is judged as that fire-retardant gas is revealed.In addition, by real-time detection and data statistics, this
Two kinds of transmitter datas can be judged and be predicted in the service life effectively to shaft coupling 6, and maintenance maintenance replacement is reminded to prepare.
As shown in Fig. 2, the screw thread pressed sealing device includes internal threaded nut 8, seal washer 12, the internal screw thread
Nut 8 and the external screw thread of 10 end of described sleeve pipe are tightly connected, and when necessary, can be wound on the external screw thread of 10 end of described sleeve pipe
Sealant tape guarantees the sealing effect of the two.12 sets of the seal washer is in described sleeve pipe 10 and is located at the internal threaded nut
Between 8 and the contact surface of seal face 3.This implementation uses movable joint threaded support fixed form, and length adjustable extent is larger,
And it is easy to disassemble.
Wherein, the seal washer 12 is O-ring seal, the air motor 2 and opposite close of explosion-proof power generator 7
It is provided with the annular seal groove matched with the seal washer 12 on sealing end face 3, that is, plays sealing function, while to described
Seal washer 12 so that described sleeve pipe 10 play positioning action, so that it is kept coaxial with shaft coupling 6 as far as possible.
In one embodiment, the fire-retardant gas uses nitrogen, and the pressure value of the nitrogen is lower than gas outlet
Pressure value and it is higher than atmospheric environmental pressure value, the pressure of nitrogen is 0.4MPa in the present embodiment.
For the seal face 3 of the air motor 2 since abrasion be easy to cause gas leakage, leakage natural gas will directly and air
Then there is security risk once friction spark occurs for shaft coupling 6 in contact.The described sleeve pipe 10 can be normal in each equipment
When work, micro-positive pressure nitrogen is filled by gas filler 11, which not only prevents after natural gas leaking directly and air
Contact, it is pre- anti-burning, eliminate danger source.Moreover, after described sleeve pipe 10 can also prevent be broken internal 6 moment of shaft coupling, in height
Fragment splashing damages to other equipment or generates spark under revolving speed, meanwhile, ambient impurities can be effectively prevent to shaft joint 6
Pollution and destruction.
When installation, by rotating the internal threaded nut 8 at 10 both ends of described sleeve pipe, make two internal threaded nuts 8 gradually to two sides
It is mobile, up to compression seal washer 12 to annular seal groove, and make air motor 2 and explosion-proof power generator 7 by enough preloads
Pressure guarantees leakproofness and stability.
Then nitrogen is passed through by gas filler 11, which is 0.4MPa, in order to pressure transmitter judgement.
Simultaneously temperature transmitter and pressure transmitter probe should be as close as possible to two sides, it is therefore an objective to prevent intermediate shaft coupling 6 beat it is larger with
Transmitter interference.
When equipment works normally, temperature transmitter 4 should be continuously maintained in certain indicating range, with normal working temperature
Compare, when the temperature is excessively high, illustrate shaft coupling 6 occur abrasion self friction heating or overall deformation after with other structures friction
Cause to heat up；It is then that shaft coupling 6 is broken, air motor 2 is in light condition, under main shaft flies to turn temperature sharply when temperature is too low
Drop.At this time, it was demonstrated that exception occurs in the pressure energy electricity generation system, needs to overhaul.
When equipment work normally when, pressure transmitter 5 should be continuously maintained in certain indicating range, if hypertonia or
It is too low, then it proves that gas leakage or helium leak occurs in the equipment, needs to overhaul.
Before maintenance, a whole set of pressure energy generating equipment should be stopped, closing front and back valve.Gas filler 11 is opened, day is detected
Then right gas concentration loosens two sides internal threaded nut 8, is overhauled.
The above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be to the present invention
Embodiment restriction.For those of ordinary skill in the art, it can also make on the basis of the above description
Other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all of the invention
Made any modifications, equivalent replacements, and improvements etc., should be included in the protection of the claims in the present invention within spirit and principle
Within the scope of.
Claims (10)
1. a kind of simple connecting shaft protective device for small miniature pressure energy of natural gas power generation, it is characterised in that: including hollow
Protecting device for shaft coupler, information display device, screw thread pressed sealing device；The screw thread pressed sealing device is symmetrical by screw thread
The both ends of the protecting device for shaft coupler are connected to, the protecting device for shaft coupler is sealed by the screw thread pressed sealing device
It is set between air motor (2) and the opposite seal face (3) of explosion-proof power generator (7) and cladding is air motor (2) and explosion-proof
The shaft coupling (6) of generator (7), the protecting device for shaft coupler, screw thread pressed sealing device, air motor (2) and anti-outburst
The fire-retardant gas of certain pressure is injected in the sealing inner cavity that the opposite seal face (3) of motor (7) is surrounded；The information is aobvious
Showing device connection is arranged on the outer wall of the protecting device for shaft coupler, real-time in the protecting device for shaft coupler for monitoring
Air pressure and temperature.
2. the simple connecting shaft protective device according to claim 1 for small miniature pressure energy of natural gas power generation, feature
Be: the protecting device for shaft coupler includes that both ends are provided with externally threaded casing (10), described sleeve pipe (10) with a thickness of
3-5mm, internal diameter are 5-10mm bigger than the outer diameter of the shaft coupling (6).
3. the simple connecting shaft protective device according to claim 2 for small miniature pressure energy of natural gas power generation, feature
It is: between the length of described sleeve pipe (10) seal face (3) more opposite than the air motor (2) and explosion-proof power generator (7)
Spacing lack 8-12mm.
4. the simple connecting shaft protective device according to claim 2 for small miniature pressure energy of natural gas power generation, feature
Be: described sleeve pipe (10) outer wall is provided with gas filler (11).
5. the simple connecting shaft protective device according to claim 2 for small miniature pressure energy of natural gas power generation, feature
Be: the both ends of described sleeve pipe (10) are provided with the external screw thread of 8-15mm.
6. the simple connecting shaft protective device according to claim 2 for small miniature pressure energy of natural gas power generation, feature
Be: the material of described sleeve pipe (10) includes metal, engineering plastics.
7. the simple connecting shaft protective device according to claim 2 for small miniature pressure energy of natural gas power generation, feature
Be: the information display device include temperature transmitter (4),
Pressure transmitter (5) is separately positioned on described sleeve pipe (10) on the outer wall of close end, for monitoring described sleeve pipe (10)
Interior real-time air pressure and temperature.
8. the simple connecting shaft protective device according to claim 2 for small miniature pressure energy of natural gas power generation, feature
Be: the screw thread pressed sealing device includes internal threaded nut (8), seal washer (12), the internal threaded nut (8) with
The external screw thread of described sleeve pipe (10) end is tightly connected, and the seal washer (12) covers on described sleeve pipe (10) and is located at described
Between internal threaded nut (8) and the contact surface of seal face (3).
9. the simple connecting shaft protective device according to claim 8 for small miniature pressure energy of natural gas power generation, feature
Be: the seal washer (12) is O-ring seal, the air motor (2) and the opposite sealing of explosion-proof power generator (7)
The annular seal groove matched with the seal washer (12) is provided on end face (3).
10. the simple connecting shaft protective device according to claim 1 for small miniature pressure energy of natural gas power generation, feature
Be: the fire-retardant gas includes nitrogen, helium, argon gas, and the pressure value of the fire-retardant gas is lower than gas outlet pressure
It is worth and is higher than atmospheric environmental pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910037341.9A CN109780206B (en) | 2019-01-15 | 2019-01-15 | Simple connecting shaft protection device for small and miniature natural gas pressure energy power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910037341.9A CN109780206B (en) | 2019-01-15 | 2019-01-15 | Simple connecting shaft protection device for small and miniature natural gas pressure energy power generation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109780206A true CN109780206A (en) | 2019-05-21 |
| CN109780206B CN109780206B (en) | 2024-07-09 |
Family
ID=66499375
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910037341.9A Active CN109780206B (en) | 2019-01-15 | 2019-01-15 | Simple connecting shaft protection device for small and miniature natural gas pressure energy power generation |
Country Status (1)
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| CN (1) | CN109780206B (en) |
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| CN204922281U (en) * | 2015-08-11 | 2015-12-30 | 潍柴西港新能源动力有限公司 | Gas seal for pipe joints structure |
| CN205141620U (en) * | 2015-09-29 | 2016-04-06 | 辽宁长志泵业有限公司 | LNG immersed pump is with sealed protection device of electric cable connection |
| CN106322046A (en) * | 2016-08-29 | 2017-01-11 | 潍柴重机股份有限公司 | High-pressure gas joint leak-protection structure |
| CN106439036A (en) * | 2016-11-09 | 2017-02-22 | 上海电气凯士比核电泵阀有限公司 | Fluid dynamic pressure type mechanical sealing structure |
| CN106640245A (en) * | 2016-11-16 | 2017-05-10 | 深圳市燃气集团股份有限公司 | Natural gas pipeline network pressure energy recovery method and device using piston expander |
| CN206530450U (en) * | 2017-03-02 | 2017-09-29 | 重庆科技学院 | Built-in natural gas line differential pressure generating device |
| CN209587127U (en) * | 2019-01-15 | 2019-11-05 | 广东众通利华能源科技有限公司 | A kind of simple connecting shaft protective device for small miniature pressure energy of natural gas power generation |
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