CN110566373A - Motor-driven high-pressure liquefied natural gas delivery pump - Google Patents
Motor-driven high-pressure liquefied natural gas delivery pump Download PDFInfo
- Publication number
- CN110566373A CN110566373A CN201910921388.1A CN201910921388A CN110566373A CN 110566373 A CN110566373 A CN 110566373A CN 201910921388 A CN201910921388 A CN 201910921388A CN 110566373 A CN110566373 A CN 110566373A
- Authority
- CN
- China
- Prior art keywords
- way valve
- pump
- plunger pump
- motor
- natural gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 239000000110 cooling liquid Substances 0.000 claims abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
- F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/06—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means
- F04B37/08—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means by condensing or freezing, e.g. cryogenic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention belongs to automobile equipment in the transportation industry, and particularly relates to a motor-driven high-pressure liquefied natural gas delivery pump for a dual-fuel engine automobile. The permanent magnet brushless motor is characterized in that a cooling liquid blind channel is arranged on the wall of a housing of the permanent magnet brushless motor, the end face of a transmission box body is fixedly connected with the lower end of a sealing protection housing of a transmission mechanism through a spigot, the periphery of the upper end of a connecting sleeve is in sliding connection with the inner diameter of a connecting flange through a sliding bearing, the upper end of the connecting sleeve is closed with a central hole, the upper end of a pump body is fixedly connected with a one-way valve body, the one-way valve is connected with a liquid outlet of a plunger pump, the two-way valve is connected with a liquid inlet of the plunger pump, the upper end of the valve body of the one-. The motor is adopted to drive the plunger pump, so that the whole automobile arrangement of the automobile is facilitated, the injection amount of the liquefied natural gas can be automatically adjusted according to the running state of the automobile, and the liquefied natural gas with different flow rates can be output by adjusting the rotating speed of the motor.
Description
Technical Field
The invention belongs to automobile equipment in the transportation industry, and particularly relates to a motor-driven high-pressure liquefied natural gas delivery pump for a dual-fuel engine automobile.
Background
At present, heavy freight trucks in China and China mainly use diesel engines as power, and the fuel economy and environmental protection indexes of the heavy freight trucks face serious challenges. The existing alternative is mainly natural gas, and mainly compressed natural gas, but the thermal efficiency of the compressed natural gas cannot reach that of diesel oil, and the compressed natural gas has insufficient output power when being used, and is not suitable for long-distance transportation. At present, the existing liquefied natural gas is widely applied, when the liquefied natural gas is used, the liquefied natural gas needs to be compressed to a high-pressure state of 33-36MPa, and when the liquefied natural gas is compressed to reach the use standard, a high-pressure plunger pump is needed. At present, a plunger pump applied internationally is driven by a hydraulic oil cylinder, a gear pump is driven by an engine, and pressure oil of the gear pump drives the oil cylinder to reciprocate. The hydraulic driving mode has the defects of low efficiency, easy oil leakage, difficult automatic control and the like.
Disclosure of Invention
The invention aims to overcome the technical defects and provide the motor-driven high-pressure liquefied natural gas delivery pump which is automatically controlled, simple in structure and high in use efficiency.
The technical scheme adopted by the invention for solving the technical problem is as follows: the motor-driven high-pressure liquid natural gas delivery pump comprises a controller, a permanent magnet brushless motor, a transmission box body, a box cover, a liquid outlet pipeline, a one-way valve body and a one-way valve cover, and is characterized in that a cooling liquid blind channel is arranged on the wall of the permanent magnet brushless motor shell, a driving belt pulley is arranged on an output shaft of the permanent magnet brushless motor connected in the transmission box body, the driving belt pulley is connected with a driven belt pulley through belt transmission, one end of the output shaft is arranged in the controller cover through a bearing, the driven belt pulley is arranged on a shaft at the lower end of a screw rod through a bearing, the end face of the transmission box body is fixedly connected with the lower end of a sealing protection shell of a transmission mechanism through a spigot, the upper end of the sealing protection shell is fixedly connected with a plunger pump shell through a connecting flange, a plurality of guide rods are fixed on the, The inner diameter of the upper end of the screw nut is connected and provided with a connecting sleeve, the periphery of the upper end of the connecting sleeve is in sliding connection with the inner diameter of a connecting flange through a sliding bearing, the upper end of the connecting sleeve is closed with a central hole, a piston end of a piston rod is arranged in the central hole of the connecting sleeve, the other end of the piston rod is arranged in the pump body through the center of the plunger pump shell, the pump body is fixedly connected with the plunger pump shell through a pump cover, the upper end of the pump body is fixedly connected with a one-way valve body, a one-way valve I and a one-way valve II are symmetrically arranged in the one-way valve body, the one-way valve I is connected with a liquid outlet of the plunger pump, the one-way valve II is connected with a.
The invention has the beneficial effects that: the motor-driven high-pressure liquefied natural gas delivery pump is suitable for dual-fuel engine automobiles, adopts the motor-driven plunger pump, has a simple structure, is convenient for the whole automobile arrangement of the automobile, can automatically adjust the injection quantity of liquefied natural gas according to the running state of the automobile, can output liquefied natural gas with different flow rates by adjusting the rotating speed of the motor, and is suitable for engines with different discharge capacities.
Drawings
The following description is made in detail by way of example with reference to the accompanying drawings.
Fig. 1 is an external structural view of a motor-driven high-pressure liquefied natural gas transfer pump.
3 fig. 3 2 3 is 3 a 3 sectional 3 view 3 a 3- 3 a 3 of 3 fig. 3 1 3. 3
Fig. 3 is an external structural view of the controller and the permanent magnet brushless motor of fig. 1.
Fig. 4 is a sectional structural view of fig. 3.
Fig. 5 is a sectional view showing the connection of the plunger pump and the check valve in fig. 2.
Fig. 6 is a sectional view of the structure of the transmission case of fig. 2.
Fig. 7 is a sectional view showing the connection of the transmission structure of fig. 2.
In the figure, 1-controller; 1-1-controller cover; 2-permanent magnet brushless motor; 2-1-output shaft; 2-2-coolant outlet; 2-3-a coolant inlet; 2-4-coolant dark channel; 3-a transmission case; 3-1-a liquid outlet; 3-2-a driving pulley; 3-3-a driven pulley; 3-4-bearing one; 3-5-bearing II; 3-6-leather belt; 3-7-a groove of the box body; 3-8-case cover; 4-a liquid outlet pipeline; 5-sealing the protective shell; 5-1-nut; 5-2-connecting sleeve; 5-3-a connecting flange; 5-4-plain bearings; 5-5-a guide bar; 5-6-lead screw; 6-plunger pump casing; 6-1-a piston rod; 6-2-pump cover; 6-3-seal; 6-4-pump body; 7-a one-way valve body; 7-1-a one-way valve I; 7-2-one-way valve II; 7-3-liquid inlet of plunger pump; 7-4-plunger pump outlet; 7-5-one-way valve cover.
Detailed Description
In the embodiment, referring to fig. 1-7, the motor-driven high-pressure liquefied natural gas delivery pump is a control device in which a controller 1 is provided with an output shaft 2-1 of a permanent magnet brushless motor 2, the controller 1 is provided with a controller cover 1-1, and one end of the output shaft 2-1 of the permanent magnet brushless motor 2 is mounted in the controller cover 1-1 by a bearing. The controller cover 1-1 is fixed with a shell of the permanent magnet brushless motor 2 through bolts, a cooling liquid blind passage 2-4 is arranged on the shell wall of the permanent magnet brushless motor 2, and a cooling liquid inlet 2-3 and a cooling liquid outlet 2-2 are arranged outside the shell of the permanent magnet brushless motor 2 and communicated with the cooling liquid blind passage 2-4. A case cover 3-8 of a transmission case body 3 is fixedly connected to a shell flange of a permanent magnet brushless motor 2, the transmission case body 3 is fixedly connected with the case cover 3-8 through bolts, a driving belt pulley 3-2 is mounted on an output shaft 2-1 connected with the permanent magnet brushless motor in the transmission case body 3 through a key, the other end of the output shaft 2-1 is mounted in the transmission case body 3 through a bearing I3-4, the driving belt pulley 3-2 is connected with a driven belt pulley 3-3 through a belt 3-6 in a transmission mode, the driven belt pulley 3-3 is mounted on a shaft at the lower end of a lead screw 5-6 through a key, and a shaft at the lower end of the lead screw 5-6 is mounted in a case groove 3-7 of the transmission case body 3. The end face of a transmission box body 3 is fixedly connected with the lower end of a sealing protection shell 5 of a transmission mechanism through a spigot, the upper end of the sealing protection shell 5 is fixedly connected with a plunger pump shell 6 through a connecting flange 5-3, a guide rod 5-5 is fixed on the inner circumferential surface of the sealing protection shell 6 through 5 screws, a screw nut 5-1 is connected with the periphery of the screw nut 5-6 in a threaded manner, a connecting sleeve 5-2 is arranged on the periphery of the upper end of the screw nut 5-6 and connected with the inner diameter of the upper end of the screw nut through a shoulder, a sliding bearing 5-4 is arranged on the outer end of the connecting sleeve 5-2 and is in sliding connection with the inner diameter of the connecting flange 5-3, the upper end of the connecting sleeve 5-2 is closed with a central hole, a piston end of a piston rod 6-1 is arranged in the central hole of the connecting sleeve 5-, the pump body 6-3 is fixedly connected with the plunger pump shell 6 by the pump cover 6-2. The upper end of the pump body 6-3 is fixedly connected with a one-way valve body 7, a one-way valve I7-1 and a one-way valve II 7-2 are symmetrically arranged in the one-way valve body 7, the one-way valve I7-1 is connected with a plunger pump liquid outlet 7-4, the one-way valve II 7-2 is connected with a plunger pump liquid inlet 7-3, and a one-way valve cover 7-5 is fixed at the upper end of the one-way valve body 7. The liquid outlet 7-4 of the plunger pump is connected with the liquid outlet 3-1 on the transmission case 3 through a liquid outlet pipeline 4.
The working principle of the motor-driven high-pressure liquefied natural gas delivery pump is as follows: the installation of the delivery pump is divided into two modes: the first one is that the motor, the controller and the transmission box part are exposed outside, and the screw rod part and the plunger pump part are inserted into the liquid storage tank; the second type is that the motor and control part, the transmission box part and the lead screw part are exposed outside, and only the plunger pump part is inserted into the liquid storage tank.
After the automobile is ignited, the controller 1 of the conveying pump checks that the automobile is ignited through a CAN communication system on the automobile, the motor 2 is immediately started to rotate, power is output to the lead screw 5-6 through the gearbox 3, the lead screw 5-6 rotates under a speed change ratio, and the lead screw 5-6 rotates in situ, so that the lead screw 5-6 and the nut 5-1 move linearly to push the piston of the plunger pump to compress the liquefied natural gas in the pump cavity, the compressed liquefied natural gas passes through the liquid outlet 7-4 of the plunger pump and then passes through the liquid outlet pipeline 4 to reach the liquid outlet 3-1 of the conveying pump, and the compressed liquefied natural gas is introduced into an engine cylinder through other pipelines to be combusted and do work.
After the screw 5-6 and the nut 5-1 move for a set distance, the permanent magnet brushless motor 2 rotates in the reverse direction under the control of the controller 1, the screw 5-6, the screw nut 5-1 and the piston of the plunger pump change the rotating direction, and the plunger pump is in a state of absorbing the liquefied natural gas and entering the pump cavity until the liquid natural gas moves for the set distance in the reverse direction.
Thus, the plunger pump completes a complete working process.
Claims (1)
1. A motor-driven high-pressure liquid natural gas delivery pump comprises a controller (1), a permanent magnet brushless motor (2), a transmission box body (3), a box cover (3-8), a liquid outlet pipeline (4), a one-way valve body (7) and a one-way valve cover (7-5), and is characterized in that a cooling liquid blind channel (2-4) is arranged on the wall of the permanent magnet brushless motor (2) shell, a driving belt pulley (3-2) is arranged on an output shaft of the permanent magnet brushless motor (2) connected in the transmission box body (3), the driving belt pulley (3-2) is in transmission connection with a driven belt pulley (3-3) through a belt (3-6), one end of the output shaft (2-1) is arranged in the controller cover (1-1) through a bearing, the driven belt pulley (3-3) is arranged on a shaft at the lower end of a lead screw (5-6) through a bearing II (3-, the end face of a transmission box body (3) is fixedly connected with the lower end of a sealing protection shell (5) of a transmission mechanism through a spigot, the upper end of the sealing protection shell (5) is fixedly connected with a plunger pump shell (6) through a connecting flange (5-3), a plurality of screws are used for fixing a guide rod (5-5) on the inner circumferential surface of the sealing protection shell (4), a screw nut (5-1) is connected with the periphery of a lead screw (5-6) in a threaded manner, a connecting sleeve (5-2) is connected with the inner diameter of the upper end of the screw nut (5-1) at the periphery of the upper end of the lead screw (5-6), the periphery of the upper end of the connecting sleeve (5-2) is connected with the inner diameter of the connecting flange (5-3) in a sliding manner through a sliding bearing (5-4), the upper end of the connecting sleeve (5-2) is closed with a central hole, and the, the other end of the piston rod (6-1) is arranged in the pump body (6-4) through the center of the plunger pump shell (6), the pump body (6-4) is fixedly connected with the plunger pump shell (6) by a pump cover (6-2), the upper end of the pump body (6-4) is fixedly connected with a one-way valve body (7), a one-way valve I (7-1) and a one-way valve II (7-2) are symmetrically arranged in the one-way valve body (7), the one-way valve I (7-1) is connected with a plunger pump liquid outlet (7-4), the one-way valve II (7-2) is connected with a plunger pump liquid inlet (7-3), a one-way valve cover (7-5) is fixed at the upper end of the one-way valve body (7), and a liquid outlet (7-4) of the plunger pump is connected with a liquid outlet (3-1) on the transmission box body (3) through a liquid outlet pipeline (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910921388.1A CN110566373B (en) | 2019-09-27 | 2019-09-27 | Motor-driven high-pressure liquid natural gas delivery pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910921388.1A CN110566373B (en) | 2019-09-27 | 2019-09-27 | Motor-driven high-pressure liquid natural gas delivery pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110566373A true CN110566373A (en) | 2019-12-13 |
| CN110566373B CN110566373B (en) | 2024-03-15 |
Family
ID=68782753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910921388.1A Active CN110566373B (en) | 2019-09-27 | 2019-09-27 | Motor-driven high-pressure liquid natural gas delivery pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566373B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2115023C1 (en) * | 1997-06-30 | 1998-07-10 | Федор Васильевич Булычев | Free-piston gas engine-compressor |
| CN101015108A (en) * | 2004-04-30 | 2007-08-08 | 卡梅伦国际公司 | Electric control and supply system |
| CN101025153A (en) * | 2006-02-17 | 2007-08-29 | 冯春国 | Cable-free oil submersible electric pump |
| JP2015061980A (en) * | 2014-12-15 | 2015-04-02 | 三菱重工業株式会社 | Gas burning engine |
| US20160222949A1 (en) * | 2015-01-30 | 2016-08-04 | Caterpillar Inc. | Pumping mechanism with plunger |
| CN206929070U (en) * | 2017-07-14 | 2018-01-26 | 成都华气厚普机电设备股份有限公司 | A kind of plunger pump cold end and plunger pump |
| CN210769064U (en) * | 2019-09-27 | 2020-06-16 | 阜新德尔汽车部件股份有限公司 | Motor-driven high-pressure liquefied natural gas delivery pump |
-
2019
- 2019-09-27 CN CN201910921388.1A patent/CN110566373B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2115023C1 (en) * | 1997-06-30 | 1998-07-10 | Федор Васильевич Булычев | Free-piston gas engine-compressor |
| CN101015108A (en) * | 2004-04-30 | 2007-08-08 | 卡梅伦国际公司 | Electric control and supply system |
| CN101025153A (en) * | 2006-02-17 | 2007-08-29 | 冯春国 | Cable-free oil submersible electric pump |
| JP2015061980A (en) * | 2014-12-15 | 2015-04-02 | 三菱重工業株式会社 | Gas burning engine |
| US20160222949A1 (en) * | 2015-01-30 | 2016-08-04 | Caterpillar Inc. | Pumping mechanism with plunger |
| CN206929070U (en) * | 2017-07-14 | 2018-01-26 | 成都华气厚普机电设备股份有限公司 | A kind of plunger pump cold end and plunger pump |
| CN210769064U (en) * | 2019-09-27 | 2020-06-16 | 阜新德尔汽车部件股份有限公司 | Motor-driven high-pressure liquefied natural gas delivery pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110566373B (en) | 2024-03-15 |
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