CN207420742U - It is a kind of to realize diesel oil and the generating set of natural gas double-fuel conversion - Google Patents
It is a kind of to realize diesel oil and the generating set of natural gas double-fuel conversion Download PDFInfo
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- CN207420742U CN207420742U CN201721231773.6U CN201721231773U CN207420742U CN 207420742 U CN207420742 U CN 207420742U CN 201721231773 U CN201721231773 U CN 201721231773U CN 207420742 U CN207420742 U CN 207420742U
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Abstract
The utility model is related to a kind of diesel oil and liquefied natural gas double fuel engine unit, including liquified natural gas tank, the gas outlet of liquified natural gas tank and one end of cryogenic hose connect, the other end connection heating under reduced pressure device of cryogenic hose, heating under reduced pressure device connects the input end of compound regulating valve by the first hose, the port of export of compound regulating valve connects mixer by the second hose, internal combustion engine intake filter is also connected on the mixer, the gas outlet of internal combustion engine connects silencer by internal-combustion engine vent-pipe, and generator is connected with the internal combustion engine and drives the electrical power generators.The utility model is simple in structure, improvement cost is low, can be widely used for the transformation of storage diesel generating set, has the advantages that small, the comprehensive diesel oil substitution rate of substitution ratio of NG variation is high under various loads, it is high to adapt to environment temperature；The utility model compact overall structure can be integrated in the container type silent case of a standard size, have the advantages that exhaust smoke is low, be widely used in oil field, field engineering and extremely hot area.
Description
Technical field
The utility model is related to oil-electric engine group field more particularly to a kind of it can realize diesel oil and natural gas double-fuel
The generating set of conversion.
Background technology
Worsening instantly in petroleum resources worsening shortages, environment, energy-saving and emission-reduction are very urgent.The soot row of diesel engine
It puts very seriously, it is very big to urban environment and human health risk.If cost-effective measure is not used to solve, diesel engine
Using will be limited be subject to increasingly strict emission regulation.
Utility model content
The applicant is directed to above-mentioned existing issue, has carried out Improvement, and providing a kind of can realize that diesel oil and natural gas are double
The generating set of fuel conversion, has the advantages that pumping loss is small, the thermal efficiency is high low with soot emissions.
Technical solution is as follows used by the utility model：
It is a kind of to realize diesel oil and the generating set of natural gas double-fuel conversion, including liquified natural gas tank, the liquefaction
The gas outlet of natural gas tank and one end of cryogenic hose connect, the other end connection heating under reduced pressure device of the cryogenic hose, described
Heating under reduced pressure device connects the input end of compound regulating valve by the first hose, and the port of export of the compound regulating valve is soft by second
Pipe connects mixer, is also connected with internal combustion engine intake filter on the mixer, the mixer by air-admission pressure-booster with
One end connection of air-admission pressure-booster air outlet pipe, the air inlet of the other end connection internal combustion engine of the air-admission pressure-booster air outlet pipe, institute
The gas outlet for stating internal combustion engine connects silencer by internal-combustion engine vent-pipe, and generator is connected with the internal combustion engine and drives the hair
Electric power generation；Internal combustion engine cylinder jacket water radiator passes through internal combustion engine cylinder jacket water radiator inlet pipe and internal combustion engine cylinder jacket water radiator outlet pipe
With the internal combustion engine and company, the internal combustion engine cylinder jacket water radiator inlet pipe passes through heating under reduced pressure device water inlet pipe and the heating under reduced pressure
The heat cycles input end connection of device, the internal combustion engine cylinder jacket water radiator outlet pipe are added by heating under reduced pressure device outlet pipe and decompression
The heat cycles port of export connection of hot device；The injection pump being connected with internal combustion engine is further included, in setting parking electricity in the injection pump
Magnet valve and injection pump control rack, disconnect each other between the electromagnetic valve for braking and injection pump control rack, in the injection pump
The control rack /V solenoid valve for being used to implement diesel engine double fuel state is also set up on control rack.
Its further technical solution is：
Also order sets to measure consumption natural gas on the other end being connected in the cryogenic hose with heating under reduced pressure device
The flowmeter and electric butterfly valve of flow；
In the intersection of the heating under reduced pressure device water inlet pipe and internal combustion engine cylinder jacket water radiator inlet pipe, electric T-shaped valve is set；
In also passing through compound regulating valve pressure-sensitive membrane low pressure side chamber connection flexible pipe and mixer in the compound regulating valve
Outlet connection, also passes through compound regulating valve pressure-sensitive membrane high pressure side chamber connection flexible pipe and plenum in the compound regulating valve
Device air outlet pipe connects；
In double fuel state, the control rack /V solenoid valve is attracted, and makes the first screw thread of the electromagnetic valve for braking
Connection head is threadedly coupled spacing between head and increases to the electromagnetic valve for braking and be in the second of injection pump control rack breaks
Open position；
Annular groove is processed on the inner wall of the mixer, is opened up on the corresponding trunnion of the annular groove along the circumferential direction uniformly distributed
Hole.
The beneficial effects of the utility model are as follows：
(1) the utility model is simple in structure, improvement cost is low, can be widely used for the transformation of storage diesel generating set,
Have the advantages that small, the comprehensive diesel oil substitution rate of substitution ratio of NG variation is high under various loads, it is high to adapt to environment temperature；This practicality
New compact overall structure can be integrated in the container type silent case of a standard size, have that exhaust smoke is low, mobility
The advantages of good, is widely used in oil field, field engineering and extremely hot area.
(2) the utility model modifies to the injection pump of internal combustion engine, in former electromagnetic valve for braking and injection pump control rack
Between embedded control rack /V solenoid valve, it is achieved thereby that the switching of pure diesel oil state and double fuel state, has good
Operability is particularly to the incomplete area of natural gas supply.
(3) the utility model natural gas supply system is controlled using the outer mechanical mixture of cylinder by the gas pressure in air inlet pipe
Natural gas supply amount ensures that internal combustion engine has preferable power performance and economic performance, is basically unchanged internal combustion engine performance,
Operation and maintenance are simple, good reliability.
(4) in the utility model internal combustion engine cylinder jacket water radiator is set to carry out heats liquefied natural gas, internal combustion engine can be made
The resistance to environment temperature of cylinder sleeve water radiator at least improves 5 DEG C or more.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram of mixer in the utility model.
Fig. 3 is the structure diagram of injection pump in the utility model.
Wherein：1st, liquified natural gas tank；2nd, cryogenic hose；3rd, flowmeter；4th, electric butterfly valve；5th, heating under reduced pressure device；6th, subtract
Press tube, heater inlet；7th, electric T-shaped valve；8th, heating under reduced pressure device outlet pipe；9th, the first hose；10th, compound regulating valve；11st,
Two hoses；12nd, compound regulating valve pressure-sensitive membrane low pressure side chamber connection flexible pipe；13rd, compound regulating valve pressure-sensitive membrane high pressure side chamber connects
Connect hose；14th, internal combustion engine intake filter；15th, mixer；151st, trunnion；152nd, hole；16th, air-admission pressure-booster；17th, air inlet increases
Depressor air outlet pipe；18th, injection pump；19th, electromagnetic valve for braking；191st, first it is threadedly coupled head；20th, injection pump control rack；
201st, second it is threadedly coupled head；21st, control rack /V solenoid valve；22nd, internal combustion engine cylinder jacket water radiator；23rd, internal combustion engine；
24th, internal-combustion engine vent-pipe；25th, silencer；26th, generator.
Specific embodiment
Illustrate specific embodiment of the present utility model below.
As shown in Figure 1, a kind of can realize that diesel oil and the generating set of natural gas double-fuel conversion include liquified natural gas tank
1, the gas outlet of liquified natural gas tank 1 is connected with one end of cryogenic hose 2, the other end connection heating under reduced pressure device of cryogenic hose 2
5, also order sets to measure the stream of consumption gas discharge on the other end being connected in cryogenic hose 2 with heating under reduced pressure device 5
Gauge 3 and electric butterfly valve 4.As shown in Figure 1, heating under reduced pressure device 5 connects the input end of compound regulating valve 10 by the first hose 9,
The port of export of compound regulating valve 10 connects mixer 15 by the second hose 11, and air-intake of combustion engine mistake is also connected on mixer 15
Filter 14, mixer 15 are connected by air-admission pressure-booster 16 with one end of air-admission pressure-booster air outlet pipe 17, air-admission pressure-booster outlet
The air inlet of the other end connection internal combustion engine 23 of pipe 17, the gas outlet of internal combustion engine 23 connects silencer by internal-combustion engine vent-pipe 24
25, generator 26 is connected with internal combustion engine 23 and generator 26 is driven to generate electricity；Internal combustion engine cylinder jacket water radiator 22 passes through IC engine cylinder
It covers water radiator inlet pipe and internal combustion engine cylinder jacket water radiator outlet pipe and internal combustion engine 23 and connects, internal combustion engine cylinder jacket water radiator inlet pipe leads to
It crosses decompression tube, heater inlet 6 to be connected with the heat cycles input end of heating under reduced pressure device 5, internal combustion engine cylinder jacket water radiator outlet pipe is led to
Decompression heater outlet pipe 8 is crossed to be connected with the heat cycles port of export of heating under reduced pressure device 5, heating under reduced pressure device water inlet pipe 6 with it is interior
The intersection of combustion engine cylinder sleeve water radiator inlet pipe sets electric T-shaped valve 7.As shown in shown in Fig. 1 Fig. 3, further include and internal combustion engine 23
The injection pump 18 of connection, sets electromagnetic valve for braking 19 and injection pump control rack 20 in the injection pump 18, electromagnetic valve for braking 19 with
It is disconnected each other between injection pump control rack 20, is also set up on injection pump control rack 20 and be used to implement diesel engine double fuel shape
The control rack /V solenoid valve 21 of state, 21 rod of control rack /V solenoid valve are threadedly coupled with 19 rod of electromagnetic valve for braking.
In also going out by compound regulating valve pressure-sensitive membrane low pressure side chamber connection flexible pipe 12 and mixer 15 in above-mentioned compound regulating valve 10
Mouth connection, also passes through compound regulating valve pressure-sensitive membrane high pressure side chamber connection flexible pipe 13 and air-admission pressure-booster in compound regulating valve 10
Air outlet pipe 17 connects.Annular groove is processed on the inner wall of above-mentioned mixer 15, circumferentially side is opened up on the corresponding trunnion 151 of annular groove
To uniformly distributed hole 152, when internal combustion engine 23 operates, using the vacuum degree formed at trunnion 151 make a certain number of natural gases into
Enter annular groove, then flow through the hole 152 that is distributed on trunnion 151 into the mixing chamber of mixer 15, after mix with air into
Gas booster 16, the size and quantity in the above-mentioned hole 152 opened up are optimal during amount of natural gas according to needed for internal combustion engine maximum power
Flow velocity and choose.
The specific work process of the utility model is as follows：
As shown in Figure 1, Figure 3, the outlet hand-operated valve of liquified natural gas tank 1 is opened, electric butterfly valve 4, electronic three are closed in power-off
Port valve 7, heating under reduced pressure device water inlet pipe 6, control rack /V solenoid valve 21, when above-mentioned control rack /V solenoid valve 21 disconnects
When, 20 position of injection pump control rack does not change, and makes injection pump control rack 20 unrestricted, so that internal combustion engine 23 is in pure
Diesel fuel state.When the inflow temperature of internal combustion engine cylinder jacket water radiator 22 reaches 60 DEG C, it is powered and opens electric butterfly valve 4, electricity
Dynamic triple valve 7, heating under reduced pressure device water inlet pipe 6 and control rack /V solenoid valve 21, control rack /V solenoid valve 21 are attracted, make
First threaded connection head 191 of electromagnetic valve for braking 19 is threadedly coupled with the second of injection pump control rack 20 between head 201
Spacing be enlarged to electromagnetic valve for braking 19 disconnect (parking) position with its be reduced to 50% in peak torque operating mode control rack position
The position of fuel delivery is corresponding, and at this moment internal combustion engine is in diesel oil and liquefied natural gas double fuel state.As shown in Figure 1, when power generation
When unit load increases, electric butterfly valve 4 gradually opens it is big, the high pressure side chamber of the pressure-sensitive membrane of compound regulating valve 10 and low pressure side chamber
Differential pressure gradually increases, and compound regulating valve 10 is gradually opened greatly, and injection pump fuel delivery is in electromagnetic valve for braking 19, fuel feeding in this state
It is gradually increased under the action of rack /V solenoid valve 21 to standard-sized sheet, when generating set load reduces, electric butterfly valve 4 gradually closes
Small, the high pressure side chamber of the pressure-sensitive membrane of compound regulating valve 10 and the differential pressure of low pressure side chamber are gradually reduced, and compound regulating valve 10 is gradual
It turns down, injection pump fuel delivery gradually closes under the action of electromagnetic valve for braking 19, control rack /V solenoid valve 21 in this state
It is small that internal combustion engine 23 is made to be in idling state.
As shown in Figure 1, in shutdown status, electric butterfly valve 4, electric T-shaped valve 7, heating under reduced pressure device water inlet pipe are closed in power-off
6 and control rack /V solenoid valve 21, injection pump control rack 20 is unrestricted at this time, and internal combustion engine 23 is made to be in straight diesel fuel
State, internal combustion engine 23 are shut down, and the outlet hand-operated valve of liquified natural gas tank 1 is turned off manually.
In the utility model, the effect of heating under reduced pressure device 5 is that liquefied natural gas is carried out high pressure relief, and natural gas is most
Big output pressure 1.5MPa, minimum output pressure are 1.2MPa, the needs of different operating modes are met with this, on heating under reduced pressure device 5
It is exported equipped with safety valve and heat cycles import and heat cycles, since liquefied natural gas will expand suction in gasification is depressurized
Heat, to avoid supply air line and other parts freeze damage, using the cylinder sleeve recirculated water of internal combustion engine cylinder jacket water radiator 22 to liquid
Change the gasification heating of natural gas, when the natural gas output pressure reduction of heating under reduced pressure device 5, then increase opening for electric butterfly valve 4
Power ratio is spent, when the natural gas output pressure rise of heating under reduced pressure device 5, then reduces the aperture power ratio of electric butterfly valve 4, works as decompression
When 5 natural gas output pressure of heater is more than 1.5MPa, safety valve opens decompression, and electric butterfly valve 4, electric T-shaped valve are closed in power-off
7th, 6 control rack /V solenoid valve 21 of heating under reduced pressure device water inlet pipe, and make injection pump control rack unrestricted, at this moment internal combustion engine
In straight diesel fuel state.
Above description is the explanation to the utility model, is not the restriction to utility model, what the utility model was limited
Scope is referring to claim, and in the case of the basic structure without prejudice to the utility model, the utility model can make any shape
The modification of formula.
Claims (6)
1. a kind of can realize diesel oil and the generating set of natural gas double-fuel conversion, it is characterised in that：Including liquified natural gas tank
(1), the gas outlet of the liquified natural gas tank (1) is connected with one end of cryogenic hose (2), the cryogenic hose (2) it is another
End connection heating under reduced pressure device (5), the heating under reduced pressure device (5) connect the import of compound regulating valve (10) by the first hose (9)
End, the port of export of the compound regulating valve (10) connects mixer (15) by the second hose (11), in the mixer (15)
On be also connected with internal combustion engine intake filter (14), the mixer (15) passes through air-admission pressure-booster (16) and air-admission pressure-booster outlet
One end connection of (17) is managed, the air inlet of the other end connection internal combustion engine (23) of the air-admission pressure-booster air outlet pipe (17) is described
The gas outlet of internal combustion engine (23) connects silencer (25), generator (26) and the internal combustion engine by internal-combustion engine vent-pipe (24)
(23) connect and the generator (26) is driven to generate electricity；Internal combustion engine cylinder jacket water radiator (22) passes through internal combustion engine cylinder jacket water radiator
Inlet pipe and internal combustion engine cylinder jacket water radiator outlet pipe and the internal combustion engine (23) simultaneously connect, and the internal combustion engine cylinder jacket water radiator inlet pipe leads to
The heat cycles input end that decompression tube, heater inlet (6) is crossed with the heating under reduced pressure device (5) is connected, the internal combustion engine cylinder jacket water
Radiator outlet pipe is connected by heating under reduced pressure device outlet pipe (8) with the heat cycles port of export of heating under reduced pressure device (5)；Further include with
The injection pump (18) of internal combustion engine (23) connection, in setting electromagnetic valve for braking (19) and oil spout oil pump feed tooth in the injection pump (18)
Item (20) disconnects between the electromagnetic valve for braking (19) and injection pump control rack (20), each other in the oil spout oil pump feed tooth
The control rack /V solenoid valve (21) for being used to implement diesel engine double fuel state is also set up on item (20).
2. a kind of generating set that can be realized diesel oil and be converted with natural gas double-fuel as described in claim 1, it is characterised in that：
Also order sets to measure consumption natural gas flow on the other end being connected in the cryogenic hose (2) with heating under reduced pressure device (5)
The flowmeter (3) of amount and electric butterfly valve (4).
3. a kind of generating set that can be realized diesel oil and be converted with natural gas double-fuel as described in claim 1, it is characterised in that：
In the intersection of the heating under reduced pressure device water inlet pipe (6) and internal combustion engine cylinder jacket water radiator inlet pipe, electric T-shaped valve (7) is set.
4. a kind of generating set that can be realized diesel oil and be converted with natural gas double-fuel as described in claim 1, it is characterised in that：
In also passing through compound regulating valve pressure-sensitive membrane low pressure side chamber connection flexible pipe (12) and mixer on the compound regulating valve (10)
(15) outlet connection, also passes through compound regulating valve pressure-sensitive membrane high pressure side chamber connection flexible pipe on the compound regulating valve (10)
(13) it is connected with air-admission pressure-booster air outlet pipe (17).
5. a kind of generating set that can be realized diesel oil and be converted with natural gas double-fuel as described in claim 1, it is characterised in that：
In double fuel state, the control rack /V solenoid valve (21) is attracted, and makes the first screw thread of the electromagnetic valve for braking (19)
Connection head (191) with the second of injection pump control rack (20) be threadedly coupled spacing between head (201) increase to described in stop
Vehicle solenoid valve (19) is in open position.
6. a kind of generating set that can be realized diesel oil and be converted with natural gas double-fuel as described in claim 1, it is characterised in that：
Annular groove is processed on the inner wall of the mixer (15), is opened up on the corresponding trunnion of the annular groove (151) along the circumferential direction
The hole (152) of cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721231773.6U CN207420742U (en) | 2017-09-25 | 2017-09-25 | It is a kind of to realize diesel oil and the generating set of natural gas double-fuel conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721231773.6U CN207420742U (en) | 2017-09-25 | 2017-09-25 | It is a kind of to realize diesel oil and the generating set of natural gas double-fuel conversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420742U true CN207420742U (en) | 2018-05-29 |
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ID=62314000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721231773.6U Active CN207420742U (en) | 2017-09-25 | 2017-09-25 | It is a kind of to realize diesel oil and the generating set of natural gas double-fuel conversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207420742U (en) |
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2017
- 2017-09-25 CN CN201721231773.6U patent/CN207420742U/en active Active
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