Octane number monitoring equipment

Abstract

The utility model provides octane number monitoring equipment, and relates to the field of octane number monitoring equipment. The octane number monitoring equipment comprises a base, the top of the base is fixedly connected with a placement bin, an n-heptane sample tube, an isooctane sample tube and a toluene sample tube are placed in the placement bin, the top surface of the base is fixedly connected with a lifting mechanism, the top of the lifting mechanism is fixedly connected with an electronic balance, and the electronic balance is fixedly connected with a computer. And a measuring mechanism is placed on the surface of the electronic balance. In consideration of the problem of octane number monitoring equipment, the electronic balance is arranged on the placement plate on the surface of the base and is used for detecting the weight of a sample in the standard oil bottle, and samples in the n-heptane sample tube, the isooctane sample tube and the methylbenzene sample tube are sequentially injected into the standard oil bottle according to a proper proportion for automatic mixing; the required octane number can be obtained without questions, and from the perspective of technology, automatic mixing according to weight is the most accurate and fastest-speed solution.

Description

Technical Field

[0001] This application relates to the technical field of octane number monitoring devices, and particularly to octane number monitoring devices. Background Art

[0002] The octane number is one of the most important characteristics of gasoline fuel and shows the performance of this fuel in an internal combustion engine. The selling price of a gasoline fuel mainly depends on its octane number. The method for determining the octane number is described in ASTM D2699 and 2700 and is based on comparing the fuel in an ASTM engine under standard conditions with a reference fuel (standard oil) of known octane number. The octane number standard oil preparation system is an automatic mixing system for ASTM reference and inspection of fuels used with the Waukesha CFR engine.

[0003] The reference substances are hydrocarbons with high and low antiknock values. Hydrocarbons with high antiknock values are called isooctane, which by definition has an octane number of 100.0 in its pure state. Hydrocarbons with low antiknock values are called n-heptane, which by definition has an octane number of 0.0 in its pure state. These two fuels are linearly mixed. For example, a co-mixture of 90% isooctane and 10% n-heptane by volume has an octane number of 90.0. O.N. = O.N. (isooctane) × % isooctane + O.N. (n-heptane) × % n-heptane. Toluene-normalized fuel mixtures are used to determine whether an engine can accept graded fuels. Toluene-normalized fuel blends are highly sensitive to the conditions of the knock test unit and are not intended to be used as reference fuels for determining ratings. To achieve an octane number exceeding 100, ratings are obtained using tetraethyl lead, in compliance with ASTM specifications. The specifications for ASTM knock test reference fuels are given in ASTM D 2699 and ASTM D 2700.

[0004] Most of the blends prepared in the octane number laboratory are normal isooctane / n-heptane blends. It is better to produce the mixture of reference fuel and standardized fuel as needed rather than preparing it in advance and storing it in glass bottles. So the mixing is carried out only when there is analytical work.

[0005] In most octane laboratories, blends are prepared using the automatic zero of a measuring glass cylinder or a volumetric pipette. At first glance, manual volumetric mixing using a measuring cylinder or a volumetric pipette seems to be the cheapest solution for preparing reference fuels. However, volumetric mixing has several drawbacks: 1. The two components must be at the same temperature; otherwise, the relatively high coefficient of expansion will cause significant errors. If the blending components are pumped from external drums, it is not easy to meet this requirement. 2. The two main reference fuels are dispensed manually, which introduces additional errors. Reading a double-calibrated burette requires extra training and great care. 3. The volumetric pipette is fragile and easily damaged. 4. The method is very uncomfortable and requires special attention from the operator. 5. The metering mechanism must calibrate the volumetric pipette. 6. The blended reference fuel is not automatically certified. 7. Due to the fire hazard, mixing should be carried out in a fume hood. 8. When a large amount of reference fuel is prepared, the tables in the ASTM standard are expressed as volume percentages of isooctane and n-heptane. Considering the densities of the two components, the calculated amounts of each component can be added to a container placed on an electronic balance. The measurement will be more accurate and does not require special attention to the temperature of the components. The accuracy of the co-mixture depends only on the short-term stability and linearity of the balance, which is better than + / - 0.1 g even for the most modest electronic laboratory balance. If the target octane number is greater than 50, n-heptane should be added first, wait for the balance to stabilize, and take the reading. Using the measured weight, the octane number must be carefully calculated and added carefully to be as close as possible to the calculated value. When the second component is added and the balance is stable, the actual octane number will be calculated from the final value. A similar procedure should be followed when mixing toluene check fuels.

[0006] Disadvantages 1. The main disadvantage of the above procedure is the increased amount of calculations required. 2. Due to the fire hazard, the mixing procedure should be carried out in a ventilated laboratory hood. 3. The need for an electronic balance is not really a disadvantage as it is inexpensive and because it can be used for other laboratory purposes. Automatic mixing by weight involves using a computer to read the electronic balance, control the dosing pump, and communicate with the operator. After the operator gives the required volume and octane number, the computer will perform the necessary calculations and control the mixing process until the reference fuel is obtained. The results can be stored in a database and a certificate can be printed for all mixtures. The method is very comfortable and does not require special attention from the operator. The mixing will be highly accurate as all possible human errors are eliminated. The temperature difference of the blending components has no effect on the final octane number as the weights of the components do not change significantly with temperature. If the error introduced by the balance is less than 0.1 g, the accuracy of the mixture will be better than 0.02 ON in the range of 40 - 100 ON and for volumes of 400 ml or higher.

[0007] There is no doubt that, from a technical perspective, automatic mixing by weight is the most accurate, elegant, and fastest solution. When comparing the three methods described in the previous pages from a financial perspective, we may have the impression that manual batch mixing is the cheapest, followed by manual mixing by weight, and the most expensive is automatic mixing by weight. However, by only considering the cost of the laboratory fume hood, the equipment for allocating mixing components and measuring instruments, saving the time of laboratory personnel, and the savings in mixing components, we can easily conclude that automatic mixing by weight is not only the best method but also the cheapest method for preparing reference and checking fuels. Summary of the Invention

[0008] This application provides an octane number monitoring device to solve the problems of octane number monitoring devices.

[0009] This application provides an octane number monitoring device, including a base. A placement bin is fixedly connected to the top of the base. Inside the placement bin, a normal heptane sample tube, an isooctane sample tube, and a toluene sample tube are placed. A lifting mechanism is fixedly connected to the top surface of the base. An electronic balance is fixedly connected to the top of the lifting mechanism. A measuring mechanism is placed on the surface of the electronic balance; the lifting mechanism includes four sets of telescopic columns fixedly connected to the top surface of the base. A placement plate is fixedly connected to the top of the telescopic columns. A hydraulic rod is fixedly connected to the middle of the bottom surface of the placement plate; the measuring mechanism includes a standard oil bottle placed on the surface of the electronic balance. A sealing plate is inserted into the upper surface of the standard oil bottle. Three sets of spray nozzles are arranged inside the sealing plate. A photoelectric sensor is fixedly connected to the surface of the sealing plate. One side of the photoelectric sensor is electrically connected to a light source through a power cord.

[0010] Preferably, a flow-through pipe is connected through one side of each of the normal heptane sample tube, the isooctane sample tube, and the toluene sample tube. The end of the flow-through pipe is connected through a booster pump, and the booster pump facilitates the transportation of samples.

[0011] Preferably, the output end of the booster pump is connected through a drainage pipe. A shunt pipe is connected through the surface of the drainage pipe, and the drainage pipe facilitates drainage.

[0012] Preferably, the shunt pipe is connected through one side of the flow-through pipe. A reflux valve is installed on the surface of the shunt pipe, and the reflux valve facilitates pressure division.

[0013] Preferably, the end of the drainage pipe is connected through the inside of the spray nozzle. A control valve is installed on the surface of the drainage pipe, and the control valve facilitates the adjustment of the flow rate.

[0014] Preferably, a liquid injection port is opened on the surface of each of the normal heptane sample tube, the isooctane sample tube, and the toluene sample tube. A liquid level gauge is installed on one side of each of the normal heptane sample tube, the isooctane sample tube, and the toluene sample tube, and the liquid level gauge facilitates the detection of the sample volume.

[0015] Preferably, one side of the placement bin is threadedly connected with a support plate, and the bottom of the support plate is fixedly connected with a fixing plate. The support plate facilitates the support of the booster pump.

[0016] Beneficial effects:

[0017] Considering the problems of the octane number monitoring device, an electronic balance is provided on the placement plate on the surface of the base. The electronic balance is used to detect the weight of the sample inside the standard oil bottle. The samples in the normal heptane sample tube, isooctane sample tube and toluene sample tube are injected into the standard oil bottle in sequence according to the appropriate ratio for automatic mixing, and the required octane number can be obtained. Undoubtedly, from a technical perspective, automatic mixing by weight is the most accurate and fastest solution.

[0018] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the overall structure of an octane number monitoring device of the present invention.

[0021] Figure 2 It is a schematic diagram of the lifting mechanism device structure of an octane number monitoring device of the present invention.

[0022] Figure 3 It is a schematic diagram of the booster pump device structure of an octane number monitoring device of the present invention.

[0023] Figure 4 It is a schematic diagram of the placement bin device structure of an octane number monitoring device of the present invention.

[0024] Explanation of the reference numerals:

[0025] 1. Base; 2. Placing bin; 3. n-Heptane sample tube; 4. Isooctane sample tube; 5. Toluene sample tube; 6. Lifting mechanism; 601. Telescopic column; 602. Placing plate; 603. Hydraulic rod; 7. Electronic balance; 8. Measuring mechanism; 801. Standard oil bottle; 802. Sealing plate; 803. Photoelectric sensor; 804. Light source; 9. Flow pipe; 10. Booster pump; 11. Drainage pipe; 12. Shunt pipe; 13. Return valve; 14. Control valve; 15. Liquid injection port; 16. Liquid level gauge; 17. Support plate; 18. Fixed plate. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims, and drawings of this application are intended to cover non-exclusive inclusion.

[0028] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase "embodiment" appearing in various places in the specification is not necessarily referring to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] The orientation terms used in the following description are all the directions shown in the figures, and do not limit the specific structure of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application.

[0030] In addition, the expressions indicating directions such as the X direction, Y direction, and Z direction for explaining the operations and structures of the components in this embodiment are not absolute but relative. Although these indications are appropriate when the components are in the positions shown in the figures, when these positions change, these directions should have different interpretations to correspond to the changes.

[0031] In addition, the terms "first", "second", etc. in the description and claims of the present application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0032] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, the "connection" or "coupling" of mechanical structures may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through screws, bolts, or other fixing members; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0034] The present utility model provides as Figures 1-4An octane number monitoring device shown in the figure includes a base 1. A placement bin 2 is fixedly connected to the top of the base 1. Inside the placement bin 2, a normal heptane sample tube 3, an isooctane sample tube 4, and a toluene sample tube 5 are placed. A lifting mechanism 6 is fixedly connected to the top surface of the base 1. An electronic balance 7 is fixedly connected to the top of the lifting mechanism 6. A measuring mechanism 8 is placed on the surface of the electronic balance 7. The lifting mechanism 6 includes four groups of telescopic columns 601 fixedly connected to the top surface of the base 1. A placement plate 602 is fixedly connected to the top of the telescopic columns 601. A hydraulic rod 603 is fixedly connected to the middle of the bottom surface of the placement plate 602. The measuring mechanism 8 includes a standard oil bottle 801 placed on the surface of the electronic balance 7. A sealing plate 802 is inserted into the upper surface of the standard oil bottle 801. Three groups of nozzles are arranged inside the sealing plate 802. A photoelectric sensor 803 is fixedly connected to the surface of the sealing plate 802. A light source 804 is electrically connected to one side of the photoelectric sensor 803 through a power cord.

[0035] Among them, a flow pipe 9 is connected through one side of each of the normal heptane sample tube 3, the isooctane sample tube 4, and the toluene sample tube 5. The end of the flow pipe 9 is connected through a booster pump 10. The booster pump 10 is convenient for transporting samples.

[0036] Among them, the output end of the booster pump 10 is connected through a drainage pipe 11. A shunt pipe 12 is connected through the surface of the drainage pipe 11. The drainage pipe 11 is convenient for drainage.

[0037] Among them, the shunt pipe 12 is connected through one side of the flow pipe 9. A reflux valve 13 is installed on the surface of the shunt pipe 12. The reflux valve 13 is convenient for pressure division.

[0038] Among them, the end of the drainage pipe 11 is connected through the inside of the nozzle. A control valve 14 is installed on the surface of the drainage pipe 11. The control valve 14 is convenient for adjusting the flow rate.

[0039] Among them, a liquid injection port 15 is opened on the surface of each of the normal heptane sample tube 3, the isooctane sample tube 4, and the toluene sample tube 5. A liquid level gauge 16 is installed on one side of each of the normal heptane sample tube 3, the isooctane sample tube 4, and the toluene sample tube 5. The liquid level gauge 16 is convenient for detecting the sample volume.

[0040] Among them, one side of the placement bin 2 is threadedly connected to a support plate 17. A fixing plate 18 is fixedly connected to the bottom of the support plate 17. The support plate 17 is convenient for supporting the booster pump 10.

[0041] Working principle: When this octane number monitoring device is in use, when it is necessary to prepare a standard oil, we first confirm that the liquid level of the sample tube is within the allowable range. After placing the clean standard oil bottle 801 on the electronic balance 7, input the octane number and the total amount of the prepared standard oil through the external control panel. The system will calculate the addition ratio and quantity of various reagents. After confirming that there is no leakage and other situations in the system, mix various reagents in sequence.

[0042] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. An octane number monitoring device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected with a placement bin (2). Inside the placement bin (2), there are placed a n-heptane sample tube (3), an isooctane sample tube (4), and a toluene sample tube (5). The top surface of the base (1) is fixedly connected with a lifting mechanism (6). The top of the lifting mechanism (6) is fixedly connected with an electronic balance (7). A measuring mechanism (8) is placed on the surface of the electronic balance (7). The lifting mechanism (6) includes four sets of telescopic columns (601) fixedly connected to the top surface of the base (1). The top of the telescopic column (601) is fixedly connected with a placement plate (602). In the middle of the bottom of the placement plate (602), a hydraulic rod (603) is fixedly connected. The measuring mechanism (8) includes a standard oil bottle (801) placed on the surface of the electronic balance (7). A sealing plate (802) is inserted into the upper surface of the standard oil bottle (801). Inside the sealing plate (802), there are three sets of spray heads. A photoelectric sensor (803) is fixedly connected to the surface of the sealing plate (802). One side of the photoelectric sensor (803) is electrically connected to a light source (804) through a power cord.

2. The octane number monitoring device according to claim 1, wherein: One side of each of the n-heptane sample tube (3), the isooctane sample tube (4), and the toluene sample tube (5) is connected with a flow-through pipe (9) in a through manner. The end of the flow-through pipe (9) is connected with a booster pump (10) in a through manner.

3. The octane number monitoring device according to claim 2, characterized in that: The output end of the booster pump (10) is connected with a drainage pipe (11) in a through manner. A shunt pipe (12) is connected to the surface of the drainage pipe (11) in a through manner.

4. The octane number monitoring device according to claim 3, characterized in that: The shunt pipe (12) is connected to one side of the flow-through pipe (9) in a through manner. A reflux valve (13) is installed on the surface of the shunt pipe (12).

5. An octane number monitoring device according to claim 3, characterized in that: The end of the drainage pipe (11) is connected to the inside of the spray head in a through manner. A control valve (14) is installed on the surface of the drainage pipe (11).

6. The octane number monitoring device according to claim 1, wherein: Liquid injection ports (15) are provided on the surfaces of the n-heptane sample tube (3), the isooctane sample tube (4), and the toluene sample tube (5). A liquid level gauge (16) is installed on one side of the n-heptane sample tube (3), the isooctane sample tube (4), and the toluene sample tube (5).

7. An octane number monitoring device according to claim 1, characterized in that: One side of the placement bin (2) is connected with a support plate (17) by means of a thread. The bottom of the support plate (17) is fixedly connected with a fixing plate (18).

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