CN214252120U - Device for measuring flash point of combustible liquid at constant pressure - Google Patents
Device for measuring flash point of combustible liquid at constant pressure Download PDFInfo
- Publication number
- CN214252120U CN214252120U CN202022575794.8U CN202022575794U CN214252120U CN 214252120 U CN214252120 U CN 214252120U CN 202022575794 U CN202022575794 U CN 202022575794U CN 214252120 U CN214252120 U CN 214252120U
- Authority
- CN
- China
- Prior art keywords
- box body
- flash point
- pressure
- electromagnetic valve
- combustible liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model discloses a device for measuring the flash point of combustible liquid at constant pressure, which comprises a box body, a flash point measuring unit, a first adjusting unit, a second adjusting unit and a third adjusting unit; the flash point measuring unit is positioned in the box body; the first adjusting unit comprises a gas flowmeter, a first electromagnetic valve and a gas inlet which are sequentially connected, and the gas flowmeter is communicated with the box body; the second adjusting unit comprises a pressure sensor, a second electromagnetic valve and an exhaust port which are sequentially connected, and the pressure sensor is also communicated with the box body; the third adjusting unit comprises a third electromagnetic valve and an air cylinder which are sequentially connected, and the third electromagnetic valve is also communicated with the box body. The utility model discloses can realize that combustible liquid flash point is accurate under the constant voltage and detect, atmospheric pressure's influence when avoiding among the prior art combustible liquid flash point survey.
Description
Technical Field
The utility model belongs to the technical field of power equipment detects, concretely relates to device of combustible liquid flash point of constant voltage measurement.
Background
The flash point is the temperature at which the material or article, when in contact with the flame, forms a mixture with the ambient air, flashes and burns immediately. For combustible liquids, the flash point is important information that guides the links of use, storage, transportation, etc. of combustible liquids. The existing flash point measuring method is that combustible liquid is heated to a certain temperature, steam generated by heating is ignited, then temperature rise ignition is continued until the surface of the combustible liquid is immediately combusted after the flash fire occurs, and the recorded temperature is the flash point value. The atmospheric pressure during measurement directly determines the testing value of the flash point of the combustible liquid, and the flash point value of the combustible liquid is difficult to accurately detect due to obvious changes of the atmospheric pressure in different regions and different testing time, thereby influencing the implementation schemes of subsequent use links.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a device of constant voltage measurement flammable liquid flash point can realize that flammable liquid flash point is accurate under the constant voltage and detects, atmospheric pressure's influence when avoiding the survey of flammable liquid flash point among the prior art.
In order to realize the technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
in a first aspect, the utility model provides a device of flammable liquid flash point of constant voltage measurement, include:
a box body;
the flash point measuring unit is positioned inside the box body;
the first adjusting unit comprises a gas flowmeter, a first electromagnetic valve and a gas inlet which are sequentially connected, and the gas flowmeter is also communicated with the box body;
the second adjusting unit comprises a pressure sensor, a second electromagnetic valve and an exhaust port which are sequentially connected, and the pressure sensor is also communicated with the box body;
and the third adjusting unit comprises a third electromagnetic valve and an air cylinder which are sequentially connected, and the third electromagnetic valve is also communicated with the box body.
Optionally, the device of flammable liquid flash point of constant voltage survey still includes steady airflow unit, steady airflow unit locates in the box, and the parcel is in the flash point measuring unit outside for the protection enters into the airflow velocity of flow in the flash point measuring unit and is less than the settlement threshold value.
Optionally, the airflow stabilizing unit is a metal mesh enclosure, and the aperture of the through hole on the metal mesh enclosure is smaller than a set threshold.
Optionally, when the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all closed, the box body is of a closed structure; when the environmental pressure in the box body is lower than the target pressure required by the combustible liquid flash point measurement, gas is input into the box body through the first adjusting unit, the environmental pressure in the box body is increased until the environmental pressure in the box body meets the required target pressure, and the environmental pressure is kept constant.
Optionally, when the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all closed, the box body is of a closed structure; when the environmental pressure in the box body is higher than the target pressure required by the combustible liquid flash point measurement, the gas in the box body is output through the second adjusting unit, the environmental pressure in the box body is reduced until the environmental pressure in the box body meets the required target pressure, and the environmental pressure is kept constant.
Optionally, the cylinder has a space volume enough to meet the test requirement, a piston is arranged in the cylinder, and when the environmental pressure in the box body is higher than the target pressure required by the combustible liquid flash point measurement, a pulling force is applied to the piston, so that the volume in the cylinder is increased, the environmental pressure in the box body is reduced until the environmental pressure in the box body meets the required target pressure, and the environmental pressure is kept constant.
In a second aspect, the present invention provides a method for constant pressure determination of flash point of combustible liquid, comprising:
detecting the environmental pressure inside the box body, wherein a flash point measuring unit is arranged in the box body;
and controlling the first adjusting unit, the second adjusting unit and the third adjusting unit based on the internal ambient pressure of the box body and a preset control strategy, so that the ambient pressure in the box body meets the required target pressure and keeps constant.
Optionally, the first adjusting unit comprises a gas flowmeter, a first electromagnetic valve and a gas inlet which are connected in sequence, and the gas flowmeter is also communicated with the box body; the second adjusting unit comprises a pressure sensor, a second electromagnetic valve and an exhaust port which are sequentially connected, and the pressure sensor is also communicated with the box body; the third adjusting unit comprises a third electromagnetic valve and an air cylinder which are sequentially connected, and the third electromagnetic valve is also communicated with the box body.
Optionally, when the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all closed, the box body is of a closed structure; when the environmental pressure in the box body is lower than the target pressure required by the combustible liquid flash point measurement, gas is input into the box body through the first adjusting unit, the environmental pressure in the box body is increased until the environmental pressure in the box body meets the required target pressure, and the environmental pressure is kept constant.
Optionally, when the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all closed, the box body is of a closed structure; when the environmental pressure in the box body is higher than the target pressure required by the combustible liquid flash point measurement, the gas in the box body is output through the second adjusting unit, the environmental pressure in the box body is reduced until the environmental pressure in the box body meets the required target pressure, and the environmental pressure is kept constant.
Optionally, the cylinder has a space volume enough to meet the test requirement, a piston is arranged in the cylinder, and when the environmental pressure in the box body is higher than the target pressure required by the combustible liquid flash point measurement, a pulling force is applied to the piston, so that the volume in the cylinder is increased, the environmental pressure in the box body is reduced until the environmental pressure in the box body meets the required target pressure, and the environmental pressure is kept constant.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model provides a device of combustible liquid flash point of constant voltage measurement ambient pressure reduces experimental error to the interference of flash point measured value when can avoiding the test.
(2) The utility model provides a steady air current device can prevent effectively that the air from flowing the interference to the flash point test, further improves flash point measuring accuracy.
(3) The utility model provides a pressure regulating scheme when dodging the point survey, can increase the pressure of test and reduce according to the actual work needs, obtain target pressure's flash point value, it is significant to guiding the use of combustible liquid better.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an apparatus for constant-pressure measurement of a flash point of a combustible liquid according to an embodiment of the present invention.
The meanings of the symbols in the figures:
1-flash point measuring unit, 2-steady airflow unit, 3-pressure regulating unit, 4-air inlet, 5-gas flowmeter, 6-pressure sensor, 7-second electromagnetic valve, 8-air outlet, 9-cylinder, 10-first electromagnetic valve, 11-third electromagnetic valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.
The following description is made in detail for the application of the principles of the present invention with reference to the accompanying drawings.
The method aims to solve the problem that in the prior art, the change of atmospheric pressure in different areas and different test times is obvious, so that the flash point value of the combustible liquid is difficult to accurately detect, and the implementation scheme of each subsequent use link is influenced. The utility model provides a device and method of combustible liquid flash point of constant voltage survey that provides has set up first regulating unit, second regulating unit and third regulating unit, according to the inside ambient pressure of box, has removed the adjustment first regulating unit, second regulating unit and/or third regulating unit, and ambient pressure up to in the box satisfies required target pressure to keep invariable, ambient pressure reduces experimental error to the interference of flash point measured value when can avoiding the test.
Example 1
As shown in fig. 1, the embodiment of the present invention provides a device for determining a flash point of a combustible liquid at a constant pressure, including:
a box body 3;
a flash point measuring unit 1 located inside the case 3; the structure and the measurement principle of the flash point measurement unit 1 can be realized by adopting the prior art, so that the utility model is not described in detail;
the first adjusting unit comprises a gas flowmeter 5, a first electromagnetic valve 10 and a gas inlet 4 which are sequentially connected, and the gas flowmeter 5 is also communicated with the box body 3; the gas flow meter 5 is used for realizing the control of the flow rate of the intake air;
the second adjusting unit comprises a pressure sensor 6, a second electromagnetic valve 7 and an exhaust port 8 which are sequentially connected, and the pressure sensor 6 is also communicated with the box body 3;
and the third adjusting unit comprises a third electromagnetic valve 11 and an air cylinder 9 which are sequentially connected, and the third electromagnetic valve 11 is also communicated with the box body 3.
The utility model discloses in a concrete implementation of embodiment, the device of combustible liquid flash point is surveyed to constant voltage still includes steady airflow unit 2, steady airflow unit 2 is located in the box 3, and the parcel is in 1 outside of flash point measuring unit for the protection enters into 1 airflow velocity of flow in the flash point measuring unit and is less than the settlement threshold value. The utility model discloses in the embodiment of the utility model provides an in a concrete implementation mode, steady air current unit 2 is the metal mesh enclosure, the aperture of the through-hole on the metal mesh enclosure is less than and sets for the threshold value for the realization is protected flash point measuring unit 1, avoids producing too big air current interference and heats.
In a specific implementation manner of the embodiment of the present invention, when the first solenoid valve 10, the second solenoid valve 7, and the third solenoid valve 11 are all closed, the box 3 is of a closed structure; when the environmental pressure in the box body 3 is lower than the target pressure required by the combustible liquid flash point measurement, gas is input into the box body 3 through the first adjusting unit, and the environmental pressure in the box body 3 is increased until the environmental pressure in the box body 3 meets the required target pressure and is kept constant.
In the second embodiment of the present invention, when the first solenoid valve 10, the second solenoid valve 7 and the third solenoid valve 11 are all closed, the box 3 is of a closed structure; when the environmental pressure in the box body 3 is higher than the target pressure required by the combustible liquid flash point measurement, the gas in the box body 3 is output through the second adjusting unit, and the environmental pressure in the box body 3 is reduced until the environmental pressure in the box body 3 meets the required target pressure and is kept constant.
The utility model discloses in the third concrete implementation of embodiment, cylinder 9 has the space volume that enough satisfies the experimental requirement, be equipped with the piston in the cylinder 9, when the ambient pressure in the box 3 is higher than the required target pressure of combustible liquid flash point survey, it is right the pulling force is applyed to the piston, increases the volume in the cylinder, reduces the ambient pressure in the box 3, and the ambient pressure in until the box 3 satisfies required target pressure to keep invariable.
The operation of the device according to the embodiment of the present invention will be described in detail with reference to a specific implementation process.
Step SS 1: and opening the first electromagnetic valve 10, the second electromagnetic valve 7 and the third electromagnetic valve 11, pushing the piston of the air cylinder 9 to the bottommost end, introducing air from the air inlet 4 at a certain flow rate, discharging the air from the air outlet 8 after the air enters the box body 3, and keeping the air for 30 seconds, wherein the ambient pressure inside the box body 3 and the air stabilizing unit 2 is the same as the atmospheric pressure. If the target pressure required by the measurement of the flash point of the combustible liquid is higher than the environmental pressure, closing the second electromagnetic valve 7 and the third electromagnetic valve 11, introducing air until the value of the pressure sensor 6 reaches the target pressure, and closing the first electromagnetic valve 10; if the target pressure required by the combustible liquid flash point measurement is smaller than the environmental pressure, the first electromagnetic valve 10 and the second electromagnetic valve 7 are closed, the piston of the cylinder 9 is stretched outwards until the value of the pressure sensor 6 reaches the target pressure, and the third electromagnetic valve 11 is closed.
Step SS 2: when the environmental pressure in the box body is adjusted to the target pressure, the flash point measuring unit 1 is started to start detection, the SS1 step is repeated after ignition every time, the temperature is increased again and ignition is carried out until the flash point value of the combustible liquid is measured.
Example 2
The embodiment of the utility model provides a method for constant voltage survey flammable liquid flash point is provided, including following step:
detecting the environmental pressure in a box body 3, wherein a flash point measuring unit 1 is placed in the box body 3;
based on the internal ambient pressure of the tank 3 and a preset control strategy, the first adjusting unit, the second adjusting unit and the third adjusting unit are controlled so that the ambient pressure in the tank 3 meets a required target pressure and is kept constant.
In a specific implementation manner of the embodiment of the present invention, the first adjusting unit includes a gas flowmeter 5, a first electromagnetic valve 10 and an air inlet 4, which are connected in sequence, and the gas flowmeter 5 is further communicated with the box 3; the second adjusting unit comprises a pressure sensor 6, a second electromagnetic valve 7 and an exhaust port 8 which are sequentially connected, and the pressure sensor 6 is also communicated with the box body 3; the third adjusting unit comprises a third electromagnetic valve 11 and an air cylinder 9 which are sequentially connected, and the third electromagnetic valve 11 is also communicated with the box body 3.
In a specific implementation manner of the embodiment of the present invention, when the first solenoid valve 10, the second solenoid valve 7, and the third solenoid valve 11 are all closed, the box 3 is of a closed structure; when the environmental pressure in the box body 3 is lower than the target pressure required by the combustible liquid flash point measurement, gas is input into the box body 3 through the first adjusting unit, and the environmental pressure in the box body 3 is increased until the environmental pressure in the box body 3 meets the required target pressure and is kept constant.
In the second embodiment of the present invention, when the first solenoid valve 10, the second solenoid valve 7 and the third solenoid valve 11 are all closed, the box 3 is of a closed structure; when the environmental pressure in the box body 3 is higher than the target pressure required by the combustible liquid flash point measurement, the gas in the box body 3 is output through the second adjusting unit, and the environmental pressure in the box body 3 is reduced until the environmental pressure in the box body 3 meets the required target pressure and is kept constant.
The utility model provides an in the third concrete implementation mode of third embodiment, cylinder (9) have enough space volume that satisfies the experimental requirement, be equipped with the piston in cylinder (9), when ambient pressure in box (3) is higher than the required target pressure of combustible liquid flash point survey, it is right the pulling force is applyed to the piston, increases the volume in the cylinder, reduces the ambient pressure in box (3), and ambient pressure in until box (3) satisfies required target pressure, and keeps invariable.
The method in the embodiment of the utility model provides a can be based on the device of the flammable liquid flash point of constant voltage survey in embodiment 1 realizes.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An apparatus for the constant pressure determination of the flash point of a combustible liquid, comprising:
a box body (3);
a flash point measuring unit (1) located inside the box (3);
the first adjusting unit comprises a gas flowmeter (5), a first electromagnetic valve (10) and a gas inlet (4) which are sequentially connected, and the gas flowmeter (5) is also communicated with the box body (3);
the second adjusting unit comprises a pressure sensor (6), a second electromagnetic valve (7) and an exhaust port (8) which are sequentially connected, and the pressure sensor (6) is also communicated with the box body (3);
and the third adjusting unit comprises a third electromagnetic valve (11) and an air cylinder (9) which are sequentially connected, and the third electromagnetic valve (11) is also communicated with the box body (3).
2. The apparatus for the constant pressure measurement of the flash point of a combustible liquid according to claim 1, wherein: the device of flammable liquid flash point of constant voltage survey is still including steady airflow unit (2), steady airflow unit (2) are located in box (3), and the parcel is in flash point measuring unit (1) outside for the protection enters into the airflow velocity of flow of flash point measuring unit in (1) and is less than the settlement threshold value.
3. The apparatus for the constant pressure measurement of the flash point of a combustible liquid according to claim 2, wherein: the air flow stabilizing unit (2) is a metal net cover, and the aperture of a through hole in the metal net cover is smaller than a set threshold value.
4. The apparatus for the constant pressure measurement of the flash point of a combustible liquid according to claim 1, wherein: when the first electromagnetic valve (10), the second electromagnetic valve (7) and the third electromagnetic valve (11) are closed, the box body (3) is of a closed structure; when the environmental pressure in the box body (3) is lower than the target pressure required by the combustible liquid flash point measurement, gas is input into the box body (3) through the first adjusting unit, and the environmental pressure in the box body (3) is increased until the environmental pressure in the box body (3) meets the required target pressure and is kept constant.
5. The apparatus for the constant pressure measurement of the flash point of a combustible liquid according to claim 1, wherein: when the first electromagnetic valve (10), the second electromagnetic valve (7) and the third electromagnetic valve (11) are closed, the box body (3) is of a closed structure; when the environmental pressure in the box body (3) is higher than the target pressure required by the combustible liquid flash point measurement, the gas in the box body (3) is output through the second adjusting unit, and the environmental pressure in the box body (3) is reduced until the environmental pressure in the box body (3) meets the required target pressure and is kept constant.
6. The apparatus for the constant pressure measurement of the flash point of a combustible liquid according to claim 1, wherein: the air cylinder (9) has a space volume enough to meet the test requirement, a piston is arranged in the air cylinder (9), when the environmental pressure in the box body (3) is higher than the target pressure required by the combustible liquid flash point measurement, pulling force is applied to the piston, the volume in the air cylinder is increased, and the environmental pressure in the box body (3) is reduced until the environmental pressure in the box body (3) meets the required target pressure and is kept constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022575794.8U CN214252120U (en) | 2020-11-10 | 2020-11-10 | Device for measuring flash point of combustible liquid at constant pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022575794.8U CN214252120U (en) | 2020-11-10 | 2020-11-10 | Device for measuring flash point of combustible liquid at constant pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214252120U true CN214252120U (en) | 2021-09-21 |
Family
ID=77731624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022575794.8U Active CN214252120U (en) | 2020-11-10 | 2020-11-10 | Device for measuring flash point of combustible liquid at constant pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214252120U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114733583A (en) * | 2022-02-24 | 2022-07-12 | 济宁市任城生态环境监控中心 | Atmosphere detection administers simulation box |
-
2020
- 2020-11-10 CN CN202022575794.8U patent/CN214252120U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114733583A (en) * | 2022-02-24 | 2022-07-12 | 济宁市任城生态环境监控中心 | Atmosphere detection administers simulation box |
| CN114733583B (en) * | 2022-02-24 | 2023-04-11 | 济宁市任城生态环境监控中心 | Atmosphere detection administers simulation box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4321294B2 (en) | Cylinder intake air amount calculation device for internal combustion engine | |
| CN214252120U (en) | Device for measuring flash point of combustible liquid at constant pressure | |
| CN105445007B (en) | A kind of gas turbine gaseous fuel control valve Flow characteristic test system and method | |
| JP3969061B2 (en) | Ignition timing control device for internal combustion engine | |
| CN105628387B (en) | Using the adjustment method of PREDICTIVE CONTROL method regulation test bay air-suction state parameter | |
| CN105486511B (en) | A kind of adjustment method of test bay state parameter | |
| CN111106366B (en) | Fuel cell stack test board and back pressure control method thereof | |
| CN216411177U (en) | Fuel octane number measuring device suitable for low-pressure environment | |
| CN112326732A (en) | Device and method for measuring flash point of combustible liquid at constant pressure | |
| KR20070003610A (en) | Method for diagnosing sensors | |
| CN108872310A (en) | A kind of Mixed Gases Explosion limit measuring method and device | |
| CN113267339B (en) | Method for calculating pressure behind throttle valve, measuring device, engine and vehicle | |
| CN109611694A (en) | A kind of gas leak detection apparatus detects the control method of tested pipeline gas leakage | |
| CN106525283A (en) | Test device for switch valve | |
| Wörner et al. | Voltage rise anemometry in turbulent flows applied to internal combustion engines | |
| US11181058B2 (en) | Method for measuring exhaust gas recirculation flow in an engine system, controlling emissions in an engine system, and an engine system | |
| CN109252988A (en) | A kind of gasoline single cylinder engine EGR realization device and its application method | |
| CN107339159B (en) | Internal combustion engine with fuel gas property measurement system | |
| CN210108640U (en) | Water heater gas tightness detection device | |
| US20210054793A1 (en) | Method for determining the cylinder air-charge of an internal combustion engine in a non-fired operation | |
| CN101696660A (en) | Method for controlling air-fuel ratio of fuel gas generator set | |
| CN207866772U (en) | A kind of material horizontal combustion testing device with wind speed adjustable function | |
| CN208996839U (en) | A kind of gasoline single cylinder engine EGR realization device | |
| CN206208415U (en) | A kind of experimental rig of switch valve | |
| CN114034810A (en) | Fuel octane number measuring device suitable for low-pressure environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |