CN112082613A - Auxiliary starting system of elliptic gear flowmeter - Google Patents
Auxiliary starting system of elliptic gear flowmeter Download PDFInfo
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- CN112082613A CN112082613A CN202010889483.0A CN202010889483A CN112082613A CN 112082613 A CN112082613 A CN 112082613A CN 202010889483 A CN202010889483 A CN 202010889483A CN 112082613 A CN112082613 A CN 112082613A
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- injection pump
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- rotation speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/006—Details or accessories
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/005—Valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/008—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus comprising lubricating means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to an auxiliary starting system of an elliptic gear flowmeter, which comprises a rotating speed measuring instrument, the elliptic gear flowmeter, a controller and an oil injection pump device, wherein the elliptic gear flowmeter comprises a driving wheel and a driven wheel, the rotating speed measuring instrument, the controller and the oil injection pump device are sequentially connected, the rotating speed measuring instrument is used for acquiring a real-time rotating speed value of the driving wheel and sending an instruction for adjusting the current of the oil injection pump device to the controller according to the real-time rotating speed value, the controller adjusts the current in the oil injection pump device according to the instruction for adjusting the current of the oil injection pump device so as to adjust the flow of lubricating oil sprayed out of the oil injection pump device, and the lubricating oil flows to each tooth groove of the driving wheel and the. The auxiliary starting system of the elliptic gear flowmeter ensures that enough thrust is provided to push the flowmeter rotor to work stably under the flow velocity action of the flowing working medium.
Description
Technical Field
The invention relates to the technical field of gear flowmeters, in particular to an auxiliary starting system of an elliptic gear flowmeter.
Background
The gear flowmeter is one of positive displacement flowmeters, and is used for precise continuous or discontinuous measurement of the flow rate or instantaneous flow rate of liquid in a pipeline.
In terms of the current situation, most of the existing elliptical gear flow meters using elliptical gears have the problem of difficult rework starting, when the elliptical gear flow meters stop working for a period of time and are started again, the friction resistance is large because the contact surface of the gears cannot quickly form an oil film due to residue blockage, bearing abrasion or other reasons caused by impurities in fuel oil, so that the starting rotating speed of the gears cannot reach the normal working condition rotating speed.
When the existing elliptic gear flowmeter is applied, the normal working state is difficult to achieve, and the technical problem that the flowmeter rotor cannot be pushed to work stably only under the action of the flow velocity of a flowing medium exists.
Disclosure of Invention
In view of the above, there is a need to provide an assisted start system for an oval gear flowmeter, which is used to solve the technical problem that the flow speed of the flowing medium is not enough to drive the flowmeter rotor to operate stably.
The invention provides an auxiliary starting system of an elliptic gear flowmeter, which comprises a rotating speed measuring instrument, the elliptic gear flowmeter, a controller and an oil injection pump device, wherein the elliptic gear flowmeter comprises a driving wheel and a driven wheel, the rotating speed measuring instrument, the controller and the oil injection pump device are sequentially connected, the rotating speed measuring instrument is used for acquiring a real-time rotating speed value of the driving wheel and sending an instruction for adjusting the current of the oil injection pump device to the controller according to the real-time rotating speed value, the controller adjusts the current in the oil injection pump device according to the instruction for adjusting the current of the oil injection pump device so as to adjust the flow of lubricating oil sprayed out of the oil injection pump device, and the lubricating oil flows to each tooth groove of the driving wheel and the.
Further, the rotation speed measuring instrument comprises a single chip microcomputer, a photoelectric sensor and a transparent protective shell, the transparent protective shell is tightly attached to the outside of the photoelectric sensor, the photoelectric sensor is used for obtaining a real-time rotation speed value of the driving gear and sending the real-time rotation speed value of the driving gear to the single chip microcomputer, the single chip microcomputer sends the real-time rotation speed value to the controller, the controller judges whether the real-time rotation speed value reaches the stable working condition rotation speed of the flowmeter, if not, the controller enables the flow of lubricating oil ejected from the oil injection pump device to be increased, and if yes, the controller cuts off the current of the oil injection pump device to enable the oil injection pump device to stop injecting the.
The controller comprises a rotating speed signal receiver, a rotating speed signal processor, a fuel injection pump device control module and an alarm device, the rotating speed measuring instrument is further used for obtaining rotating direction information of the driving gear and sending the rotating direction information to the single chip microcomputer, the single chip microcomputer sends the rotating direction information to the rotating speed signal receiver, the rotating speed signal processor is used for judging whether the real-time rotating speed value exceeds a set threshold value or not and whether the rotating direction is the reverse direction or not, and if the real-time rotating speed value exceeds the set threshold value or the rotating direction is the reverse direction, the alarm device gives an alarm.
Furthermore, the rotating speed signal receiver is further used for receiving a real-time rotating speed value, the rotating speed signal processor is further used for judging whether the real-time rotating speed value reaches the rotating speed of the stable working condition of the flowmeter, and the fuel injection pump device control module is used for controlling the flow of the lubricating oil ejected from the fuel injection pump device.
Further, the elliptic gear flowmeter comprises a display screen and a body part, wherein the display screen is installed on the outer side of the body part and used for displaying an accumulated flow value, the body part comprises a shell, a driving gear, a driven gear, a front cover and an O-shaped fixing ring part, the driving gear and the driven gear are arranged inside the shell, and the front cover is matched with the O-shaped fixing ring part to seal the shell.
Further, the controller is installed on the outer side of the body of the elliptic gear flowmeter, the rotating speed measuring instrument is embedded into the bottom of the body shell of the elliptic gear flowmeter, and the fuel injection pump device is installed at the bottom of the body shell of the elliptic gear flowmeter.
Furthermore, two annular grooves are arranged in the fuel injection pump device, the driving wheel and the driven wheel which are tightly attached to each other, the annular grooves have the same circle center as the driving wheel and the driven wheel, and lubricating oil sprayed out of the fuel injection pump device flows into the annular grooves.
Furthermore, the oil injection pump device comprises an electromagnetic valve, an oil injection pump body and an oil injection nozzle, the electromagnetic valve and the oil injection pump body are connected into a whole, the flow of oil injection of the oil injection pump device is controlled by controlling the size of the current electrified through the electromagnetic valve through a controller, the oil injection nozzle is used for injecting lubricating oil, and the annular groove is matched with the size and the shape of the oil injection nozzle.
Furthermore, after lubricating oil is sprayed out through the oil nozzle, the lubricating oil flows to the two annular grooves, after the annular grooves are filled with the lubricating oil, the generated pressure pushes the driving wheel and the driven wheel to generate gaps, the lubricating oil can flow to each tooth groove of the driving gear and the driven gear along with the overflow of the gaps, and an oil film is formed between the tooth surfaces of the gears.
Further, the rotating speed measuring instrument, the controller and the fuel injection pump device are sequentially connected through cables.
Compared with the prior art, the invention has the beneficial effects that: the method comprises the steps that a real-time rotating speed value of a driving gear is obtained through a rotating speed measuring instrument, an instruction for adjusting the current of an oil injection pump device is sent to a controller according to the real-time rotating speed value, the controller adjusts the current in the oil injection pump device according to the instruction for adjusting the current of the oil injection pump device, the flow of lubricating oil sprayed out of the oil injection pump device is adjusted, and the lubricating oil flows to tooth grooves of the driving gear and a driven gear; so that under the action of the flow velocity of the flowing medium, enough thrust is provided to push the flowmeter rotor to work stably.
Drawings
FIG. 1 is a schematic structural diagram of an elliptical gear flow meter start-assisting system provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a rotation speed measuring instrument according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a controller according to an embodiment of the present invention;
FIG. 4 is a perspective view of an oval gear flow meter provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an injection pump apparatus according to an embodiment of the present invention;
FIG. 6 is an elevation view of an elliptical gear flow meter assisted start-up system configuration provided by an embodiment of the present invention;
fig. 7 is a top view of an elliptical gear flow meter assisted start-up system configuration provided by an embodiment of the present invention.
Reference numerals: 1-an elliptical gear flow meter; 11-LCD display screen; 12-a front cover; 13-O-shaped stationary ring member; 14-a driven gear; 15 a drive gear; 16-a housing; 161-annular groove; 162-oil gallery; 2-injection pump means; 21-an electromagnetic valve; 22-the injection pump body; 23-a nut; 24-an oil jet; 3-contactless rotating speed measuring instrument; 31-a single chip microcomputer; 32-transparent protective shell; 33-a photosensor; 4-a controller; 41-display screen; 42-a rotational speed signal receiver; 43-a rotational speed signal processor; 44-a fuel injection pump arrangement control module; 45-an alarm device;
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
The embodiment of the invention provides an auxiliary starting system of an elliptic gear flowmeter, which comprises a rotating speed measuring instrument, the elliptic gear flowmeter, a controller and an oil injection pump device, wherein the elliptic gear flowmeter comprises a driving wheel and a driven wheel, the rotating speed measuring instrument, the controller and the oil injection pump device are sequentially connected, the rotating speed measuring instrument is used for acquiring a real-time rotating speed value of the driving wheel and sending an instruction for adjusting the current of the oil injection pump device to the controller according to the real-time rotating speed value, the controller adjusts the current in the oil injection pump device according to the instruction for adjusting the current of the oil injection pump device so as to adjust the flow of lubricating oil sprayed out of the oil injection pump device, and the lubricating oil flows to each tooth groove of the driving wheel and the.
By the technical scheme, under the flow velocity action of the flowing working medium, enough thrust is provided for pushing the flowmeter rotor to stably work.
In a specific embodiment, a schematic structural diagram of an elliptical gear flowmeter assisted start-up system is shown in fig. 1, and the elliptical gear flowmeter assisted start-up system includes an elliptical gear flowmeter 1, an oil injection pump device 2 with solenoid valve control, a non-contact type rotating speed measuring instrument 3 and a controller 4;
preferably, the rotation speed measuring instrument includes a single chip microcomputer, a photoelectric sensor and a transparent protective shell, the transparent protective shell is tightly attached to the outside of the photoelectric sensor, the photoelectric sensor is used for acquiring a real-time rotation speed value of the driving gear and sending the real-time rotation speed value of the driving gear to the single chip microcomputer, the single chip microcomputer sends the real-time rotation speed value to the controller, the controller judges whether the real-time rotation speed value reaches a stable working condition rotation speed of the flow meter, if not, the controller increases the flow of lubricating oil ejected from the oil injection pump device, and if so, the controller cuts off the current of the oil injection pump device to enable the oil injection pump device to stop injecting the lubricating;
in an embodiment, the structure of the rotation speed measuring instrument is schematically illustrated in fig. 2, and the rotation speed measuring instrument is a contactless rotation speed measuring instrument 3, which includes a photoelectric sensor 33; a transparent protective case 32 attached to the outside of the photosensor 33; the single chip microcomputer 31 is fixed on the bottom of the elliptic gear flowmeter body shell 16;
preferably, the controller includes a rotation speed signal receiver, a rotation speed signal processor, a fuel injection pump device control module and an alarm device, the rotation speed measuring instrument is further configured to obtain rotation direction information of the driving gear and send the rotation direction information to the single chip microcomputer, the single chip microcomputer sends the rotation direction information to the rotation speed signal receiver, the rotation speed signal processor is configured to determine whether the real-time rotation speed value exceeds a set threshold value and whether the rotation direction is the opposite direction, and if the real-time rotation speed value exceeds the set threshold value or the rotation direction is the opposite direction, the alarm device is made to alarm;
in a specific embodiment, the structural schematic diagram of the controller is as shown in fig. 3, the controller 4 includes a display screen 41, an alarm device 45, a rotational speed signal receiver 42, a rotational speed signal processor 43, and a fuel injection pump device control module 44, where the display screen 41 is disposed outside a housing of the controller 4;
preferably, the rotation speed signal receiver is further configured to receive a real-time rotation speed value, the rotation speed signal processor is further configured to determine whether the real-time rotation speed value reaches a rotation speed of a stable working condition of the flow meter, and the fuel injection pump device control module is configured to control a flow rate of the lubricating oil injected into the fuel injection pump device;
preferably, the oval gear flowmeter comprises a display screen and a body part, the display screen is mounted on the outer side of the body part and used for displaying an accumulated flow value, the body part comprises a shell, a driving gear, a driven gear, a front cover and an O-shaped fixing ring component, the driving gear and the driven gear are arranged in the shell, and the front cover is matched with the O-shaped fixing ring component to seal the shell;
in a specific embodiment, the oval gear flowmeter has a three-dimensional structure, as shown in fig. 4, the oval gear flowmeter 1 includes an LCD display screen 11, a housing 16, a driving gear 15, a driven gear 14, a front cover 12, a gasket, an O-ring component 13, and a power connection cable; the power supply connecting cable is connected with an external power supply;
the driving gear 15 and the driven gear 14 are arranged in the elliptic gear flowmeter; an annular groove 161 provided on one side of the drive gear 15 and the driven gear 14 near the bottom of the elliptical gear flowmeter housing 16 in which the injection pump device 2 is installed;
preferably, the controller is installed outside the body of the oval gear flowmeter, the rotation speed measuring instrument is embedded into the bottom of the body shell of the oval gear flowmeter, and the fuel injection pump device is installed at the bottom of the body shell of the oval gear flowmeter.
Preferably, two annular grooves are arranged in the fuel injection pump device, the driving wheel and the driven wheel which are tightly attached to each other, the annular grooves have the same circle center as the driving wheel and the driven wheel, and lubricating oil sprayed out of the fuel injection pump device flows into the annular grooves.
Preferably, the fuel injection pump device comprises an electromagnetic valve, a fuel injection pump body and a fuel injection nozzle, the electromagnetic valve and the fuel injection pump body are connected into a whole, the size of the current electrified through the electromagnetic valve is controlled through a controller so as to control the flow of fuel injection of the fuel injection pump device, the fuel injection nozzle is used for injecting lubricating oil, and the annular groove is matched with the size and the shape of the fuel injection nozzle;
in one embodiment, the injection pump device is an injection pump device with solenoid valve control, and the structure of the injection pump device is schematically illustrated in fig. 5, the injection pump device 2 with solenoid valve control includes an injection pump body 22, a solenoid valve 21, a nut 23, and an injection nozzle 24, and the solenoid valve 21 is connected with the injection pump body 22; the nut 23 fixes the oil injection pump device with the electromagnetic valve at the bottom of the elliptical gear flowmeter body shell 16; the oil nozzle 24 is embedded into an annular groove which is matched with the bottom of the oval gear flowmeter body shell 16 in shape and size;
the annular groove completely accommodates the oil nozzle, so that the oil injection pump device can inject lubricating oil to the annular grooves of the driving gear and the driven gear through the oil duct, and further plays a role in lubricating the gears; the oil injection pump device with the electromagnetic valve does not occupy a fixed volume space formed by the driving gear, the driven gear and the cavity, and does not influence the measurement precision of the elliptic gear flowmeter.
Preferably, after the lubricating oil is sprayed out through the oil nozzle, the lubricating oil flows to the two annular grooves, after the annular grooves are filled with the lubricating oil, the generated pressure pushes the driving wheel and the driven wheel to generate gaps, the lubricating oil flows to each tooth groove of the driving gear and the driven gear along with the gaps, and an oil film is formed between the tooth surfaces of the gears; so as to reduce the friction force and make it reach the stable working condition rotation speed;
in one embodiment, the fuel injection pump device control module further includes a rotation speed comparator, an energization control switch, and a sliding rheostat element, as shown in fig. 6 and 7, respectively; when the elliptical gear flowmeter is initially started to work, the controller 4 starts the oil injection pump device 2 with the electromagnetic valve, the oil injection pump device 2 is arranged on one side of the oil injection pump device 2 through the oil duct 162, lubricating oil is injected into the annular groove 161 inside the elliptical gear flowmeter shell 16 and the driving wheel and the driven wheel which are tightly attached, after the annular groove 161 is filled with the lubricating oil, a certain pressure is generated when the annular groove 161 is filled with the lubricating oil to push the gears to generate a certain gap, and the lubricating oil flows to each tooth groove of the driving gear 15 and the driven gear 14 along with the gap overflow, so that a liquid film is quickly formed between the contact surfaces of the two gears, and the friction force of the contact surfaces is reduced;
the rotation speed condition of the gear is monitored by a photoelectric sensor 33 of a non-contact type rotation speed measuring instrument 3, when the rotation speed of the gear reaches the stable working condition rotation speed of a flowmeter, the current of the oil injection pump device 2 with the electromagnetic valve is cut off by a controller 4, and the gear is pushed to rotate under the independent action of the flow speed impact force of a working medium;
when the photoelectric sensor 33 detects that the rotating speed of the gear cannot reach the rotating speed of the flowmeter under the stable working condition, the single chip microcomputer 31 in the non-contact rotating speed measuring instrument 3 transmits the processed data signal to a rotating speed signal receiver 42 in the controller through a cable 34; the single chip microcomputer 31 converts the gear rotating speed signal measured by the photoelectric sensor 33 into a digital signal;
the rotating speed signal processing device 43 in the controller 4 judges that the rotating speed signal does not reach the working condition rotating speed, and then the position of a slide sheet of the slide rheostat is adjusted through the fuel injection pump device control module 44 in the controller 4, the circuit resistance is reduced, so that the electrifying current of the electromagnetic valve 21 in the fuel injection pump device 2 with the electromagnetic valve is increased, the fuel injection quantity of the fuel injection pump device 2 is increased, the lubricating oil is in more sufficient contact with a gear surface, the electrifying current of the fuel injection pump device 2 with the electromagnetic valve is cut off through the controller 4 until the rotating speed of the gear reaches the stable working condition rotating speed of the flowmeter, the fuel injection pump device stops working, and the rotor is pushed to stably work;
meanwhile, the alarm device 45 in the controller 4 can monitor whether the gear is reversely rotated (abnormal) and the rotating speed is too large, and when the above conditions occur, a warning lamp of the alarm device 45 will flash and sound an alarm.
Preferably, the rotating speed measuring instrument, the controller and the fuel injection pump device are sequentially connected through cables.
According to the auxiliary starting system of the elliptic gear flowmeter, the real-time rotating speed value of the driving gear is obtained through the rotating speed measuring instrument, an instruction for adjusting the current of the oil injection pump device is sent to the controller according to the real-time rotating speed value, the controller adjusts the current in the oil injection pump device according to the instruction for adjusting the current of the oil injection pump device, the flow of lubricating oil sprayed out of the oil injection pump device is further adjusted, and the lubricating oil flows to each tooth groove of the driving gear and the driven gear; under the action of the flow velocity of the flowing medium, enough thrust is provided to push the flowmeter rotor to work stably; the starting method provides guarantee for the quick and stable starting of the elliptic gear flowmeter, and has strong feasibility and practicability.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The auxiliary starting system of the elliptic gear flowmeter is characterized by comprising a rotating speed measuring instrument, the elliptic gear flowmeter, a controller and an oil injection pump device, wherein the elliptic gear flowmeter comprises a driving wheel and a driven wheel, the rotating speed measuring instrument, the controller and the oil injection pump device are sequentially connected, the rotating speed measuring instrument is used for obtaining a real-time rotating speed value of the driving wheel and sending an instruction for adjusting the current of the oil injection pump device to the controller according to the real-time rotating speed value, the controller adjusts the current in the oil injection pump device according to the instruction for adjusting the current of the oil injection pump device so as to adjust the flow of lubricating oil ejected from the oil injection pump device, and the lubricating oil flows to each tooth groove of the driving wheel and the driven wheel.
2. The elliptical gear flowmeter starting aid system according to claim 1, wherein the rotation speed measuring instrument includes a single chip microcomputer, a photoelectric sensor, and a transparent protective case, the transparent protective case is attached to an exterior of the photoelectric sensor, the photoelectric sensor is configured to obtain a real-time rotation speed value of the driving gear and send the real-time rotation speed value of the driving gear to the single chip microcomputer, the single chip microcomputer sends the real-time rotation speed value to the controller, the controller determines whether the real-time rotation speed value reaches a stable operating condition rotation speed of the flowmeter, if not, the controller increases a flow rate of lubricating oil ejected from the injection pump device, and if so, the controller cuts off a current of the injection pump device to stop the injection pump device from ejecting the lubricating oil.
3. The elliptical gear flowmeter auxiliary starting system according to claim 2, wherein the controller comprises a rotation speed signal receiver, a rotation speed signal processor, a fuel injection pump device control module and an alarm device, the rotation speed measuring instrument is further configured to obtain rotation direction information of the driving gear and send the rotation direction information to the single chip microcomputer, the single chip microcomputer sends the rotation direction information to the rotation speed signal receiver, the rotation speed signal processor is configured to determine whether the real-time rotation speed value exceeds a set threshold value and whether the rotation direction is the reverse direction, and if the real-time rotation speed value exceeds the set threshold value or the rotation direction is the reverse direction, the alarm device is made to alarm.
4. The elliptical gear flow meter assisted start system of claim 2, wherein the rotational speed signal receiver is further configured to receive a real-time rotational speed value, the rotational speed signal processor is further configured to determine whether the real-time rotational speed value reaches a steady-state rotational speed of the flow meter, and the injection pump assembly control module is configured to control a flow rate of lubricant injected into the injection pump assembly.
5. The elliptical gear flow meter start assist system of claim 1, wherein the elliptical gear flow meter includes a display screen and a body portion, the display screen is mounted outside the body portion for displaying an accumulated flow value, the body portion includes a housing, a drive gear, a driven gear, a front cover and an O-ring retainer member, the drive gear and the driven gear are disposed inside the housing, and the front cover cooperates with the O-ring retainer member to seal the housing.
6. The elliptical gear flow meter start assist system of claim 1, wherein the controller is mounted outside of the elliptical gear flow meter body, the tachometer is embedded in a bottom portion of the elliptical gear flow meter body housing, and the fuel injection pump assembly is mounted to the bottom portion of the elliptical gear flow meter body housing.
7. The elliptical gear flow meter assisted starting system according to claim 1, wherein two annular grooves are formed in the interior of the fuel injection pump device, which is in close contact with the driving gear and the driven gear, the annular grooves having the same center as the driving gear and the driven gear, and the lubricating oil injected from the fuel injection pump device flows into the annular grooves.
8. The elliptical gear flowmeter start-assisting system of claim 7, wherein the fuel injection pump device comprises a solenoid valve, a fuel injection pump body, and a fuel injection nozzle, the solenoid valve is integrally connected to the fuel injection pump body, the magnitude of the current applied through the solenoid valve is controlled by a controller to control the flow rate of fuel injected by the fuel injection pump device, the fuel injection nozzle is used for injecting lubricating oil, and the annular groove is adapted to the size and shape of the fuel injection nozzle.
9. The elliptical gear flow meter assisted starting system according to claim 8, wherein when the lubricating oil is injected through the oil injection nozzle, the lubricating oil flows to the two annular grooves, when the annular grooves are filled with the lubricating oil, the generated pressure pushes the driving wheel and the driven wheel to generate gaps, and the lubricating oil flows to each tooth groove of the driving wheel and the driven wheel along with the gaps, so that an oil film is formed between the tooth surfaces of the gears.
10. The elliptical gear flow meter assisted start-up system of claim 1, wherein the speed measurement device, the controller and the fuel injection pump device are connected in sequence by cables.
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