KR100519148B1 - Automatic Fixed Quantity Main Entrance by Temperature of Fiuid, Velocity of Flow and Weight and Pouring in Method - Google Patents

Abstract

In more detail, the present invention, when injecting and filling the oil (collectively referred to as LPG gas, gasoline, kerosene, etc.) through the injector, automatically detects and computes the temperature of the oil, the flow rate and specific gravity injected, The present invention relates to an automatic metering device and an injection method according to a fluid's temperature, flow rate and specific gravity, which are able to always inject and fill an accurate quantity of oil even under different environmental conditions by applying a volume change rate of oil.

The present invention is a circuit portion consisting of various switches and LCD display for injecting and filling fluid; A control valve connected to the injection port by the injection pipe and configured to control the flow rate of the fluid; A pressure gauge is installed at one upper end portion, and a hydrometer installed in the buffer tank installed to communicate with the control valve; A temperature sensor installed in a transfer pipe installed to communicate with the buffer tank; Turbine flow meter; A discharge flow valve; A discharge port installed to communicate with the discharge flow valve; Injecting and filling a certain amount of fluid into the inlet by a supply means from a tank lorry and a power supply and a control unit for driving the injector; Supplying a flow rate of the fluid supplied through the injection port while being controlled by a control valve; Supplying and storing a predetermined amount of fluid in the buffer tank by the control valve; A specific gravity value of the fluid supplied to and stored in the buffer tank is detected by a hydrometer and input to a circuit unit; A temperature is measured while the fluid supplied to and stored in the buffer tank passes through a temperature sensor through a transfer tube, and a temperature measurement value is input to a circuit unit; Measuring the flow rate of the fluid supplied by the transfer pipe in the turbine flowmeter and inputting a flow rate value to the circuit unit; Calculating the specific gravity value input by the hydrometer of the fluid, the temperature value measured by the temperature sensor, and the flow rate value measured by the turbine flowmeter; Opening the discharge flow valve in the circuit part by operation processing values for specific gravity, temperature, and flow rate of the fluid; Discharging the fluid discharged through the discharge flow valve by data processing by the circuit unit; By using the injection method comprising the step of discharging the fluid through the outlet, in the injection and filling of the fluid, by measuring the volume change rate according to the specific gravity of the fluid as well as the volume change rate according to the fluid temperature and flow rate, In addition, it is possible to calculate the exact amount of fluid injected.

Description

Automatically fixed quantity main entrance by temperature of fiuid, Velocity of flow and weight and pouring in method

The present invention relates to an automatic metering device and an automatic injection method according to the temperature, flow rate and specific gravity of the fluid, and more particularly, in the injection and filling of oil (collectively referred to as LPG gas, gasoline, kerosene, etc.) through the injector By automatically detecting and calculating the temperature of the oil, the flow rate and specific gravity of the oil, and applying the volume change rate of the oil according to each condition, it is possible to always inject and fill the exact quantity of oil even under different environmental conditions. Automatic metering device and injection method according to the temperature, flow rate and specific gravity of a fluid,

In general, liquefied gas (LPG), natural gas (LNG), gasoline, diesel, kerosene, and other oils (hereinafter, referred to as fluids in the present invention) may be replaced by volume depending on temperature, flow rate, and specific gravity during injection and filling. This change causes the volume change of these fluids to change in volume at a rate of about 0.23% when the temperature of 1 ° C. is changed.

Therefore, when injecting and filling fluids, the volume change rate becomes large when the temperature rises high, such as during a hot summer season, so that the difference between the amount measured in the meter and the amount actually injected is very small. Will have

On the other hand, as a correction device for reducing the error of the injection and charge amount caused by the change in the volumetric ratio of the fluid according to the temperature change as described above, and the correction control method thereof by the present applicant, the patent application No. 29628 (name: Elpi Charger) Has been previously filed by the electronic automatic temperature correction apparatus and its correction control method, hereinafter referred to as the first selection) and registered under Patent No. 125878.

As described above, the present invention is an improvement on the selection proposed and registered by the present applicant, and an object thereof is, of course, to inject and fill a fluid by using an injector, as well as a rate of change in volume depending on the temperature and flow rate of the fluid. In addition, by measuring the volumetric rate change according to the specific gravity of the fluid, it provides an injection device and automatic injection method that automatically adjusts the injection volume according to the temperature, flow rate and specific gravity of the new type of fluid to calculate a more accurate injection volume of the fluid I would like to.

In order to achieve the above object, the present invention provides a circuit portion comprising a variety of switches and LCD display in the injection and filling of the fluid; A control valve connected to the injection port by the injection pipe and configured to control the flow rate of the fluid; A pressure gauge is installed at one upper end portion, and a hydrometer installed in the buffer tank installed to communicate with the control valve; A temperature sensor installed in a transfer pipe installed to communicate with the buffer tank; Turbine flow meter; A discharge flow valve; A discharge port installed to communicate with the discharge flow valve; And a power supply and a control unit for driving the injection device.

Such the present invention comprises the steps of injecting and filling a certain amount of fluid into the inlet by the supply means from the tank lorry; Supplying a flow rate of the fluid supplied through the injection port while being controlled by a control valve; Supplying and storing a predetermined amount of fluid in the buffer tank by the control valve; A specific gravity value of the fluid supplied to and stored in the buffer tank is detected by a hydrometer and input to a circuit unit; A temperature is measured while the fluid supplied to and stored in the buffer tank passes through a temperature sensor through a transfer tube, and a temperature measurement value is input to a circuit unit; Measuring the flow rate of the fluid supplied by the transfer pipe in the turbine flowmeter and inputting a flow rate value to the circuit unit; Calculating the specific gravity value input by the hydrometer of the fluid, the temperature value measured by the temperature sensor, and the flow rate value measured by the turbine flowmeter; Opening the discharge flow valve in the circuit part by operation processing values for specific gravity, temperature, and flow rate of the fluid; Discharging the fluid discharged through the discharge flow valve by data processing by the circuit unit; It is characterized by consisting of the step of discharging the fluid through the outlet.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic view showing an injection device according to the present invention, wherein the circuit portion 10 of the injection device 1 of the present invention is provided with various switches 2 and an LCD display 4, and the control valve 20 is a fluid. Is connected to the inlet 14 by the injection tube 12 to adjust the inflow of the hydrometer 30, the pressure regulator 22 is installed on one side of the upper end, the buffer installed to communicate with the control valve 20 Built in the tank 24, the temperature sensor 40 indicates that it is installed in the transfer pipe 32 is installed to communicate with the buffer tank (24).

In addition, a turbine flowmeter 50 and a discharge flow valve 60 are sequentially installed in the transfer pipe 32, and a discharge port 70 is installed to communicate with the discharge flow valve 60. Indicates that the power supply and control unit 80 for driving) is installed.

FIG. 2 is a circuit diagram of an injection device according to the present invention. In the injection and supply of a fluid, a hydrometer 30 for measuring the specific gravity of the fluid is connected to a central processing unit (CPU) to determine the specific gravity value of the fluid. The arithmetic processing is performed, and a temperature sensor 40 for measuring the temperature of the fluid is connected to the central processing unit through the A / D converter, and the temperature value of the fluid is calculated and the turbine flowmeter for measuring the flow velocity of the fluid 50) is connected to the central processing unit to indicate that the flow rate value is to be calculated.

In addition, the central processing unit is connected to the discharge flow rate valve 60 which is opened and closed by a relay, a printer for outputting the calculated data on the specific gravity value, temperature value and flow rate value of the fluid is connected, the injection of the fluid The LCD display 4 for displaying the value is connected.

3 is a process diagram showing a fluid injection method of the injection device according to the present invention, the fluid injection method according to the present invention is a step of injecting and filling a certain amount of fluid into the injection port by the supply means from the tank lorry (S10); Supplying the flow rate of the fluid supplied through the injection port while being controlled by the control valve (S20); Supplying and storing a predetermined amount of fluid in the buffer tank by the control valve (S30); A specific gravity value of the fluid supplied to and stored in the buffer tank is detected by a hydrometer and input to a circuit unit (S40); Step (S50) of measuring the temperature by inputting and storing the fluid supplied to and stored in the buffer tank through a temperature sensor through a transfer tube (S50); The flow rate of the fluid supplied by the transfer pipe is measured in the turbine flowmeter and the flow rate value is input to the circuit unit (S60); Calculating a specific gravity value input by the hydrometer of the fluid, a temperature value measured by the temperature sensor, and a flow rate value measured by the turbine flowmeter (S70); A step (S80) of discharging the discharge flow valve by the calculation processing values for the specific gravity, the temperature and the flow rate of the fluid in the circuit part; Discharging the fluid discharged through the discharge flow valve by data processing by the circuit unit (S90); It indicates that the fluid is injected by the step (S100) that the fluid is discharged through the outlet.

An embodiment according to the injection device and the automatic injection method in which the injection amount is automatically adjusted according to the temperature, flow rate and specific gravity of the fluid of the present invention as follows.

As shown in FIGS. 1 to 3, the injection / supply process of the fluid using the injection device 1 is performed to inject and fill a certain amount of fluid into the injection port 2 by means of a supply means from the tank lorry in step S10. And, the flow rate of the fluid supplied through the inlet (2) by the step (S20) is supplied while being adjusted by the control valve 20, a predetermined amount of fluid by the control valve 20 in step (S30) buffer tank The specific gravity value of the fluid supplied to and stored in the 24 and supplied to and stored in the buffer tank 24 through step S40 is detected by the hydrometer 30 and input to the circuit unit 10.

Subsequently, in step S50, the temperature is measured while the fluid supplied and stored in the buffer tank passes through the temperature sensor 40 through the transfer pipe 32, and the temperature measurement value is input to the circuit unit 10. In S60, the fluid supplied by the transfer pipe 32 is measured at the turbine flowmeter 50, and a flow rate value is input to the circuit unit 10. In operation S70, the fluid is input by the hydrometer 30. The specific gravity value, the temperature value measured by the temperature sensor 40, and the flow rate value measured by the turbine flowmeter 50 are processed, and the specific gravity of the fluid in the circuit unit 10 through step S80, As the discharge flow rate valve 60 is opened by the calculation processing values for the temperature and the flow rate, the discharge of the fluid discharged through the discharge flow rate valve 60 by the calculation processing value by the circuit unit in step S90 is generated. While the data is processed, the fluid is discharged through the outlet (S100) It will be injected.

At this time, in the process of going through the step (S70), the fluid is a calculation process for the specific gravity value, the temperature value and the flow rate value by the circuit unit 10 (see FIG. 2), such a calculation process is shown in Table 1 below. ] Is the same.

TABLE 1

The calculation basis for the fluid in [Table 1] describes an example of LPG, which is the volume conversion difference ÷ total application temperature for the temperature difference, for example, 0.098 ÷ 50 ° C. when the total difference in conversion by the temperature difference is 0.098. Since x 100 = 0.196, the volume conversion rate of LPG per 1 degreeC will be 0.196%.

Such, the specific gravity range of the fluid is shown in Table 2 below.

TABLE 2

As described above, it will have a volume increase rate according to the specific gravity, the temperature and the flow rate for the fluid such as LPG, gasoline, kerosene, diesel.

On the other hand, [Table 3] below compares the test tolerance of gasoline meta with respect to the change in ground temperature.

TABLE 3

Note: A volume change rate of 0.08% for diesel is applied per 1 ° C change in temperature.

As shown in [Table 3], the volume conversion value is larger than the range of the weighing test pores, as in the comparison table referring to the smallest volume conversion rate and underground temperature conditions. When using the injection device and the automatic injection method in which the injection amount is automatically adjusted according to the temperature, flow rate and specific gravity of the fluid according to the present invention, the improved effect of the injection and supply of the fluid as shown in Table 4 below Will be obtained.

TABLE 4

And, [Table 5] below is the average temperature of September by region in Korea.

TABLE 5

* [Table 5] is classified using the Korea Meteorological Agency data from 1961 to 1990 0.1 ℃.

When the fluid injector according to the present invention is installed in the existing lubricator as described above, first, in the case of GROSS shipment, as shown in [Table 1], the area closest to the corresponding gas station is found to calculate how far it is from 15 ° C. In case of A gas station of Daegwallyeong, the difference of 15 ℃-8.2 ℃ = 6.8 ℃ occurs.

And, when calculating the difference in moonrise temperature in [Table 2], 22 ℃ -8.2 ℃ = 13.8 ℃ difference occurs in the case of September, if the oil received at the gas station as GROSS, when installing the injection device according to the present invention When temperature difference of petroleum is calculated, it is 22 degreeC-15 degreeC = 7 degreeC.

At this time, the injection device of the present invention is 15 ℃ is the reference temperature.

Therefore, as described above, when the injection device according to the present invention is not installed, it can be seen that the loss due to the temperature difference is 13.8 ° C., and by installing the injection device, the loss by about 6.8 ° C. can be reduced. .

In this way, if the volume expansion coefficient (0.11% of volume increase / decrease generation per 1 degree of lead-free) of the petroleum oils loss-corrected by the injection device of the present invention is applied,

Loss of temperature difference × volume factor (6.8 ℃) × 0.11% = 0.78% will be guaranteed, and if it is the same month of the previous year, the loss will decrease by 0.748%.

Next, in the case of NET shipment, since the receiving temperature of petroleum at the gas station was based on 15 ℃, the average temperature value of the region closest to the gas station was found and the temperature was lower than 15 ℃. = Temperature calculation, that is, in the case of Daegwallyeong, considering that the volume expansion coefficient per 1 ° C is 0.11% because 15 ° C-8.2 ° C = 6.8 ° C, it is 6.8 ° C × 0.11% = 0.748%. It can be reduced.

As a result of the installation of the actual injection device using this method, the passing temperature of the lubricator in winter: -4 ℃ ~ 4 ℃, oil: lead-free, pre-setting injection of 20L with the lubricator, about 330mm in the case of 0 ℃ Lacking, that is, a difference of -330mm per 20L occurred.

In this way, in injecting the fluid, the difference between the injection amount and the injection amount actually injected varies according to different temperature difference, specific gravity and flow rate of the fluid in each region, and the fluid using the injection device according to the present invention. Since it is injected, in the process of injecting the fluid, it is possible to completely compensate for the difference in the injection amount according to the temperature, specific gravity, and flow rate.

As such, by using the injection device and the automatic injection method in which the injection amount is automatically adjusted according to the temperature, flow rate and specific gravity of the fluid according to the present invention, in the process of injecting the fluid, the difference in the injection amount according to the temperature, specific gravity and flow rate It can be completely calibrated, so it can always fill and fill a certain amount of fluid, and reduce the loss due to the reduction of injection volume. There is an effect that can be satisfied.

1 is a schematic view showing an injection device according to the present invention,

2 is a circuit diagram of an injection device according to the present invention,

3 is a process chart showing a fluid injection method of the injection device according to the present invention.

<Explanation of symbols for main parts of drawing>

1: Injection device 2: Switch

4: LCD display 10: circuit part

12: injection tube 14: injection hole

20: control valve 22: air pressure regulator

24: buffer tank 30: weightless

32: transfer pipe 40: temperature sensor

50: turbine flow meter 60: discharge flow valve

70: outlet 80: power supply and control unit

Claims (2)

In injecting and filling fluids, A circuit unit 10 including various switches 2 and an LCD display 4; A control valve 20 connected to the injection port 14 by the injection pipe 12 and configured to control the flow rate of the fluid; A pressure gauge 22 is installed at one upper end portion of the hydrometer 30 installed in the buffer tank 24 installed to communicate with the control valve 20; A temperature sensor 40 installed in the transfer pipe 32 installed to communicate with the buffer tank 24; A turbine flow meter 50; A discharge flow valve 60; A discharge port 70 installed to communicate with the discharge flow valve 60; Injection device for automatically adjusting the injection amount according to the temperature, flow rate and specific gravity of the fluid, characterized in that the power and the control unit 80. Injecting and filling a predetermined amount of fluid into the inlet by the supply means from the tank lorry (S10); Supplying the flow rate of the fluid supplied through the injection port while being controlled by the control valve (S20); Supplying and storing a predetermined amount of fluid in the buffer tank by the control valve (S30); A specific gravity value of the fluid supplied to and stored in the buffer tank is detected by a hydrometer and input to a circuit unit (S40); Step (S50) in which the temperature is measured while the fluid supplied to and stored in the buffer tank passes through the temperature sensor through a transfer pipe, and the temperature measurement value is input to the circuit unit; The flow rate of the fluid supplied by the transfer pipe is measured in the turbine flowmeter and the flow rate value is input to the circuit unit (S60); Calculating a specific gravity value input by the hydrometer of the fluid, a temperature value measured by the temperature sensor, and a flow rate value measured by the turbine flowmeter (S70); A step (S80) of discharging the discharge flow valve by the calculation processing values for the specific gravity, the temperature and the flow rate of the fluid in the circuit part; Discharging the fluid discharged through the discharge flow valve by data processing by the circuit unit (S90); Injection method in which the injection amount is automatically adjusted according to the temperature, flow rate and specific gravity of the fluid, characterized in that the fluid is discharged through the outlet (S100).