阅读说明：本技术 燃油流速检测装置 (Fuel flow velocity detection device ) 是由 韩庆民 颜文 刘冬峰 张雪丹 戴锡康 于 2020-12-10 设计创作，主要内容包括：本发明提供了一种燃油流速检测装置,包括激光测位装置、盛油装置和电脑；激光测位装置安装在盛油装置,激光测位装置能够测量盛油装置中的燃油液位；激光测位装置还连接电脑,电脑能够接收激光测位装置的信号,计算并显示实时流量。根据本发明提供的燃油流速检测装置能够实时计算并显示燃油流速,解决了传统的燃油流速检测装置需要手动计算燃油流速,测量精度低的问题。(The invention provides a fuel flow velocity detection device, which comprises a laser position measuring device, an oil containing device and a computer, wherein the laser position measuring device is used for measuring the position of a fuel flow velocity; the laser position measuring device is arranged on the oil containing device and can measure the fuel oil level in the oil containing device; the laser position measuring device is also connected with a computer, and the computer can receive signals of the laser position measuring device, calculate and display real-time flow. The fuel flow rate detection device provided by the invention can calculate and display the fuel flow rate in real time, and solves the problems that the traditional fuel flow rate detection device needs to manually calculate the fuel flow rate and has low measurement precision.)

1. The fuel flow velocity detection device is characterized by comprising a laser position measuring device (1), an oil containing device (2) and a computer (3);

the laser position measuring device (1) is installed on the oil containing device (2), and the laser position measuring device (1) can measure the fuel oil level in the oil containing device (2);

the laser position measuring device (1) is also connected with a computer (3), and the computer (3) can receive signals of the laser position measuring device (1) and calculate and display real-time flow.

2. The fuel flow rate detection device according to claim 1, characterized in that the laser position measuring device (1) is provided with a laser displacement sensor (4) and a bracket (5), and the laser displacement sensor (4) is mounted on the bracket (5) and is tightly connected with the top of the bracket (5).

3. The fuel flow rate detecting device according to claim 2, wherein the oil containing device (2) is provided with an oil float (9);

the oil floater (9) is arranged in the oil containing device (2), the oil floater (9) can float up and down in the oil containing device (2) along with the position change of the oil liquid level and float on the oil liquid level all the time, and the laser displacement sensor (4) measures the oil liquid level through measuring the position of the oil floater (9).

4. The fuel flow rate detecting device according to claim 3, wherein the oil containing device (2) is further provided with a cap (6), a glass measuring tube (7), a measuring cylinder (8) and a shock absorbing plate (10);

the cover cap (6) is arranged on the measuring cylinder (8) and connected with the top of the measuring cylinder (8), and the bottom of the bracket (5) is connected with the top of the measuring cylinder (8) through the connecting cover cap (6);

the glass burette (7) is arranged on the measuring cylinder (8) and is tightly connected with the inner wall of the measuring cylinder (8), and fuel oil can be filled in the glass burette (7);

the oil floater (9) is arranged in the glass measuring tube (7), can float up and down in the glass measuring tube (7) along with the position change of the liquid level of the fuel oil and always floats on the liquid level of the fuel oil, and the oil floater (9) can reflect laser emitted by the laser displacement sensor (4);

the damping sheet (10) is arranged in the glass measuring tube (7), and the damping sheet (10) can reduce fluctuation of the liquid level of oil in the glass measuring tube (7).

5. The fuel flow rate detecting apparatus according to claim 4, wherein the glass burette (7) is provided with a capacity indication, and the graduated cylinder (8) is provided with a window at a position corresponding to the capacity indication, through which a human eye can observe the fuel level.

6. The fuel flow rate detection device according to claim 2, further comprising a signal line (11) and an acquisition circuit (12);

the computer (3) is connected with the laser displacement sensor (4) of the laser position measuring device (1) through a signal line (11) and an acquisition circuit (12).

7. The fuel flow rate detection device according to claim 6, characterized in that one end of the signal line (11) is connected with the laser displacement sensor (4), and the signal line (11) can receive a position signal sent by the laser displacement sensor (4);

the other end of the signal wire (11) is connected with the acquisition circuit (12), the acquisition circuit (12) is further connected with the computer (3), and the signal wire (11) and the acquisition circuit (12) can convert position signals sent by the laser displacement sensor (4) into data which can be received by the computer (3) and transmit the data to the computer (3).

8. The fuel flow rate detection device according to claim 7, characterized in that the computer (3) is provided with a display screen, and the computer (3) can calculate and display the fuel flow rate in real time.

Technical Field

The invention relates to the field of petroleum detection, in particular to a fuel flow velocity detection device, and particularly relates to a real-time fuel flow velocity detection device of a diesel cetane number measuring machine.

Background

Petroleum is the most widely used power energy in the world at present, and diesel oil can provide stronger power for various large-scale machines. The quality detection of the diesel is very critical, and the cetane number of the diesel is an important technical index for the quality detection of the diesel. The diesel cetane number measuring machine used in the market at present must meet the ISO5165-1998 or GB/T386-2010 standards, and the two standards particularly suggest that the fuel flow rate, namely the oil flow rate when the diesel cetane number measuring machine is in operation, needs to meet 13.0mL/min +/-0.2 mL/min. At present, most diesel cetane number measuring machines on the market still adopt the manual reading mode to read the fuel flow rate, the manual reading mode can not measure the fuel flow rate in real time, and the measurement accuracy also can hardly reach the standard requirement. A fuel flow rate detection device capable of realizing high-precision real-time measurement of fuel flow rate is urgently to be developed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a fuel flow rate detection device.

The fuel flow rate detection device provided by the invention comprises a laser position measuring device, an oil containing device and a computer;

the laser position measuring device is arranged on the oil containing device and can measure the fuel oil level in the oil containing device;

the laser position measuring device is also connected with a computer, and the computer can receive signals of the laser position measuring device, calculate and display real-time flow.

Preferably, the laser position measuring device is provided with a laser displacement sensor and a bracket, wherein the laser displacement sensor is arranged on the bracket and is fixedly connected with the top of the bracket.

Preferably, the oil containing device is provided with an oil float;

the oil floater is arranged in the oil containing device, the oil floater can float up and down in the oil containing device along with the position change of the liquid level of the fuel oil and always floats on the liquid level of the fuel oil, and the laser displacement sensor realizes the measurement of the height of the liquid level of the fuel oil by measuring the position of the oil floater.

Preferably, the oil containing device is also provided with a cover cap, a glass burette, a measuring cylinder and a damping sheet;

the cover cap is arranged on the measuring cylinder and connected with the top of the measuring cylinder, and the bottom of the bracket is connected with the top of the measuring cylinder through the connecting cover cap;

the glass burette is arranged on the measuring cylinder and is tightly connected with the inner wall of the measuring cylinder, and fuel oil can be contained in the glass burette;

the oil floater is arranged in the glass measuring tube, can float up and down in the glass measuring tube along with the position change of the fuel liquid level and always float on the fuel liquid level, and can reflect laser emitted by the laser displacement sensor;

the shock absorption sheet is arranged in the glass burette and can reduce the fluctuation of the liquid level of the fuel in the glass burette.

Preferably, the glass burette is provided with a volume mark, the graduated cylinder is provided with a window at the corresponding position of the volume mark, and human eyes can observe the height of the liquid level of the fuel through the window.

Preferably, the device also comprises a signal wire and an acquisition circuit;

the computer is connected with the laser displacement sensor of the laser position measuring device through a signal line and an acquisition circuit.

Preferably, one end of the signal line is connected with the laser displacement sensor, and the signal line can receive a position signal sent by the laser displacement sensor;

the other end of the signal wire is connected with the acquisition circuit, the acquisition circuit is further connected with a computer, and the signal wire and the acquisition circuit can convert position signals sent by the laser displacement sensor into data which can be received by the computer and transmit the data to the computer.

Preferably, the computer is provided with a display screen, and the computer can calculate and display the fuel flow rate in real time.

Compared with the prior art, the invention has the following beneficial effects:

1. by arranging the laser displacement sensor and the oil floater, the fuel flow rate detection device can measure the height of oil in real time, and the problem that the height of oil needs to be observed by human eyes in the traditional fuel flow rate detection device is solved;

2. the computer is arranged to receive the signals of the laser displacement sensor, so that the computer can calculate and display the fuel flow rate in real time, and the problem that the conventional fuel flow rate detection device needs to manually calculate the fuel flow rate is solved;

3. the fuel flow velocity detection device provided by the invention has the advantages of high fuel flow velocity measurement precision, high timeliness, high integration level and simplicity in installation and maintenance.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of a fuel flow rate detection device.

In the figure:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

Examples

Fig. 1 is a schematic diagram of a fuel flow rate detection device provided by the invention.

The fuel flow rate detection device provided by the invention comprises a laser position measuring device 1, an oil containing device 2 and a computer 3. The laser position finding device 1 is installed in the oil containing device 2, the laser position finding device 1 can measure the fuel oil liquid level in the oil containing device 2, the laser position finding device 1 is provided with a laser displacement sensor 4, the laser displacement sensor 4 of the laser position finding device 1 is connected with a computer 3, and the computer 3 can receive signals of the laser displacement sensor 4 and calculate and display real-time flow. Specifically, the measurement distance of the laser displacement sensor 4 is 200 ± 80 mm.

The laser position measuring device 1 is further provided with a support 5, the laser displacement sensor 4 is installed on the support 5, and the laser displacement sensor 4 is fixedly connected with the top of the support 5. The length of the support 5 is matched to the measurable distance of the laser displacement sensor 4, in particular, so that the measuring reference point of the laser displacement sensor 4 is exactly at the center of the height of the oil containing device 2. The holder 5 has a thickness that reduces the play of the laser position finder 1 mounted on the holder 5 during measurement.

The oil containing device 2 is provided with an oil float 9, a cap 6, a glass burette 7, a measuring cylinder 8 and a damping piece 10.

The cap 6 is arranged on the measuring cylinder 8 and connected with the top of the measuring cylinder 8, and the bottom of the bracket 5 is connected with the top of the measuring cylinder 8 through the connecting cap 6.

The glass buret 7 is installed at the graduated flask 8, and with 8 inner walls of graduated flask fastening connections, can fill the fuel in the glass buret 7, the glass buret 7 is provided with the capacity sign, and the corresponding position department of graduated flask 8 at the capacity sign is provided with the windowing, and human eye can be through windowing the observation fuel liquid level height.

The oil floater 9 is arranged in the oil containing device 2, the oil floater 9 can float up and down in the oil containing device 2 along with the position change of the liquid level of the fuel oil and always float on the liquid level of the fuel oil, and the laser displacement sensor 4 realizes the measurement of the height of the liquid level of the fuel oil by measuring the position of the oil floater 9; specifically, the oil float 9 is arranged in the glass burette 7, can float up and down in the glass burette 7 along with the position change of the fuel liquid level and float on the fuel liquid level all the time, the oil float 9 can reflect the laser emitted by the laser displacement sensor 4, and the laser displacement sensor 4 measures the position of the oil float 9 through the time of laser reflection so as to realize the measurement of the fuel liquid level. The oil floater 9 is made of aluminum material with light density and oil corrosion resistance, the wall thickness of the oil floater 9 is 0.8mm, the height of the oil floater is 15mm, the oil floater 9 can float in diesel oil, and the bottom surface of the damping sheet 10 is provided with a groove so that the diesel oil can effectively flow out

The damping sheet 10 is provided inside the glass burette 7, and the damping sheet 10 can reduce fluctuation of the liquid level of the fuel inside the glass burette 7.

The fuel flow rate detection device further comprises a signal line 11 and an acquisition circuit 12. The computer 3 is connected with the laser displacement sensor 4 of the laser position measuring device 1 through a signal wire 11 and an acquisition circuit 12. One end of the signal wire 11 is connected with the laser displacement sensor 4, and the signal wire 11 can receive a position signal sent by the laser displacement sensor 4. The other end of the signal wire 11 is connected with an acquisition circuit 12, the acquisition circuit 12 is further connected with the computer 3, and the signal wire 11 and the acquisition circuit 12 can convert position signals sent by the laser displacement sensor 4 into data which can be received by the computer 3 and transmit the data to the computer 3. The computer 3 is provided with a display screen, and the computer 3 can calculate the fuel flow rate in real time and display the fuel flow rate.

Specifically, the acquisition circuit 12 is installed in an electrical cabinet of a diesel cetane number measuring machine, and in order to meet the technical requirements of micron-order accuracy, the acquisition circuit 12 adopts a 16-bit AD/DA circuit and obtains a data conversion result through a single chip microcomputer.

Specifically, the computer 3 is mounted on a panel of the diesel cetane number measuring machine, and an industrial tablet computer with a touch screen is adopted. The computer 3 obtains displacement data from the acquisition circuit 12 through communication modes such as a serial port and the like, calculates and displays the fuel flow rate of the diesel cetane number measuring machine to a user in real time.

The fuel flow rate detection device provided by the invention displays the liquid level height in the oil containing device 2 in real time through the position of the oil floater 9 in the measuring cylinder 8, obtains the height information of the oil floater 9 through the reflected laser ray obtained by irradiating the oil floater 9 in the oil containing device 2 by the laser displacement sensor 4, and calculates and displays the real-time fuel flow rate by the computer 3 through the real-time communication between the laser position measuring device 1 and the computer 3. The measuring accuracy of the fuel flow rate of the diesel cetane number measuring machine during working is effectively improved, the real-time performance is good, and the working efficiency of the diesel cetane number measuring machine can be greatly improved.

Because the diesel cetane number measuring machine vibrates obviously when in work, the real-time liquid level height information acquired by the laser displacement sensor 4 has certain deviation, and the computer 3 calculates the fuel flow rate by using the following algorithm to correct the deviation. The algorithm comprises the following steps:

step S1, acquiring the real-time AD value of the laser displacement sensor 4 through the acquisition circuit 12;

step S2, calculating the AD difference value in the fixed time T, and dividing the difference value by the time T to calculate the AD value difference in the unit time of the time period;

step S3, converting the AD difference value in unit time into a height difference value of liquid level descending in unit time, and multiplying the height difference value of liquid level descending in unit time by the sectional area of the glass burette 7 to calculate the liquid level descending volume in unit time, namely the fuel flow rate;

step S4, recording the fuel flow rate v in the Nth fixed time T_nRecording the fuel flow rate at the moment after the Nth fixed time T is up to V_n，V_nCalculated from the following equation:

in the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.