CN210603461U - Irregular solid particle air pressure type volume and density measuring device - Google Patents
Irregular solid particle air pressure type volume and density measuring device Download PDFInfo
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- CN210603461U CN210603461U CN201921364073.3U CN201921364073U CN210603461U CN 210603461 U CN210603461 U CN 210603461U CN 201921364073 U CN201921364073 U CN 201921364073U CN 210603461 U CN210603461 U CN 210603461U
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Abstract
The air pressure type volume and density measuring device for the irregular solid particles comprises an air storage tank, a testing tank and a single chip microcomputer, wherein a first air inlet and a first air outlet are formed in the air storage tank; the test tank comprises a second air inlet and a second air outlet, the second air inlet is connected with the first air outlet pipe, the second air outlet is connected with a second air outlet pipe, a third valve and a gas flow sensor are arranged on the second air outlet pipe, a second air pressure sensor is installed on the test tank, and the second air pressure sensor, the gas flow sensor, the first air pump and the second air pump are respectively and electrically connected with the single chip microcomputer. The utility model discloses a volume and the density of irregular solid particle are tested to the atmospheric pressure method, and the function is many, and the precision is higher.
Description
Technical Field
The utility model relates to an engineering irregular solid particle volume, density measurement's such as civil engineering, traffic, water conservancy technical field, concretely relates to irregular solid particle vapour-pressure type volume and density measurement device and application method thereof.
Background
The natural rock particle material is a building material widely applied to projects such as water conservancy, traffic, civil engineering and the like, such as earth-rock dams, railway slag, broken stone foundations and the like, because of the advantages of high bearing capacity, high rigidity, convenience in construction, low manufacturing cost and the like. The volume and density measurement of irregular solid particle material is an important physical index for researching the mechanical property of material engineering. With the requirements of infrastructure and energy conservation and environmental protection, the application field of irregular particle types is more and more extensive, and the related content is continuously increased. In order to improve the efficiency, save the cost and improve the precision of researching the strength deformation of the material, the rapid and accurate measurement of the volume and the density of irregular solid particles is an important factor.
The existing method for detecting the volume of irregular particles is mainly a drainage method, is operated backward, interferes the progress of an experiment, and is embodied in the following aspects:
1. the measuring function is single, and only the volume can be measured;
2. the precision is low, which is caused by factors such as graduated cylinder scale reading, water temperature, closed bubbles and the like;
3. water can interfere with the performance of the material, or prolong the performance study time, and affect the test results.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an irregular solid particle vapour-pressure type volume and density measurement device, solve above-mentioned measurement function singleness, adopt drainage method test volume, the factor that causes the error is more, the low and water performance that can disturb the material of precision, influences the technical problem of test result.
The utility model discloses the technical scheme who takes does:
the air pressure type volume and density measuring device for the irregular solid particles comprises an air storage tank, a testing tank and a single chip microcomputer, wherein a first air inlet and a first air outlet are formed in the air storage tank; the test tank comprises a second air inlet and a second air outlet, the second air inlet is connected with the first air outlet pipe, the second air outlet is connected with a second air outlet pipe, a third valve and a gas flow sensor are arranged on the second air outlet pipe, a second gas pressure sensor used for detecting the gas pressure in the test tank is mounted on the test tank, and the second gas pressure sensor, the gas flow sensor, the first air pump and the second air pump are respectively electrically connected with the single chip microcomputer.
The test tank comprises a tank body, a detachable top cover is installed at the top of the tank body, a second partition plate is arranged in the tank body, and a weighing sensor is installed in the second partition plate; one side of the second partition plate is hinged with the tank body, a locking device is arranged on the second partition plate, the locking device enables the second partition plate to be in a locking state when the quality is tested, and the locking device releases the locking state of the second partition plate after the quality test is finished.
The locking device comprises a screw rod, the screw rod is in threaded fit with the tank body, a threaded hole is formed in the side face of the second partition plate, the inner end of the screw rod is matched with the threaded hole, and a handle is arranged at the outer end of the screw rod.
The gas storage tank is provided with a heating and heat-preserving device and a temperature sensor, the detection end of the temperature sensor extends into the gas storage tank, and the temperature sensor is electrically connected with the single chip microcomputer; the test tank is sleeved with a heat insulation sleeve.
Heating heat preservation device includes the heat-preserving container, the gas holder is fixed in the heat-preserving container, there is the interval between the lateral wall of gas holder and the inside wall of heat-preserving container, be equipped with in this interval and be used for heat retaining water, be equipped with water inlet and water outlet on the heat-preserving container, be equipped with the water tank outside the heat-preserving container, the water inlet and the water outlet of heat-preserving container lead to pipe and water tank intercommunication respectively, install the water pump on the water inlet of heat-preserving container and the water pipe of being connected of water tank, be equipped with electric heater unit in the water tank, electric heater unit and water.
And a first air pressure sensor is arranged on the air storage tank and electrically connected with the singlechip.
The first valve, the second valve and the third valve are all electromagnetic valves, and the first valve, the second valve and the third valve are all electrically connected with the single chip microcomputer; the singlechip is electrically connected with a timer.
And a buffer cushion is arranged at the bottom of the test tank.
The measuring device also comprises a shell, a detachable cover plate is arranged at the top of the shell, and a top cover of the test tank extends out of the cover plate or is flush with the cover plate; a first partition plate is arranged in the shell, the test tank, the single chip microcomputer, the first air pump, the second air pump, the first valve, the second valve, the third valve and the air flow sensor are all arranged on the first partition plate, and the air storage tank, the water tank and the water pump are arranged below the first partition plate.
The use method of the irregular solid particle air pressure type volume and density measuring device comprises the following steps:
the first step is as follows: the air storage tank is inflated, the first valve is opened, the single chip microcomputer controls the first air pump to work, the first air pump pumps air into the air storage tank, after inflation is completed, the single chip microcomputer controls the first air pump to stop working, and the first valve is closed.
The second step is that: the testing tank is calibrated, when no irregular solid particles are placed in the testing tank, a second valve is opened, the single chip microcomputer controls a second air pump to pump air in the air storage tank into the testing tank, a second air pressure sensor is used for detecting air pressure in the testing tank, when the air pressure of the testing tank is p, the single chip microcomputer controls the second air pump to stop working, and the second valve is closed; opening the third valve, the single chip starts timing, the first gas flow sensor is used for testing the gas flow entering the test tank, when the gas pressure in the test tank is recovered to the initial value, the third valve is closed, the single chip stops timing, and the first gas flow is transmittedThe sensor feeds back the signal to the single chip microcomputer, and the single chip microcomputer converts the signal into the gas volume V according to the gas flow and the timing timeContainer。
The third step: the test tank tests the weight of irregular solid particles, a top cover of the test tank is opened, the locking device locks the second partition plate, the irregular solid particles are placed on the second partition plate of the test tank, the top cover is covered, the weighing sensor on the second partition plate weighs the irregular solid particles, the weight of the irregular solid particles is m, the irregular solid particles are fed back to the single chip microcomputer, after weighing is completed, the locking device unlocks the second partition plate, and the irregular solid particles enter the test tank along the second partition plate.
The fourth step: the test tank tests the volume of the irregular solid particles, a second valve is opened, the single chip microcomputer controls the second air pump to pump air in the air storage tank into the test tank, when the air pressure of the test tank is p, the single chip microcomputer controls the second air pump to stop working, and the second valve is closed; opening the third valve, the single chip starts timing, when the air pressure in the test tank is recovered to the initial value, the third valve is closed, the single chip stops timing, the first gas flow sensor feeds back a signal to the single chip, and the single chip converts the signal into the gas volume V according to the gas flow and the timing time0Then the volume of the irregular solid particles is Vs＝(VContainer-V0) The density of the irregular solid particles is m/(V)Container-V0)。
The fifth step: repeating the operations from the second step to the fourth step for N times, wherein N is more than or equal to 2, and during each operation, the air pressure values in the test tank are different in the second step, namely, the volume and the density of the irregular solid particles are tested under different air pressure values, so that a plurality of groups of volume values and density values are obtained.
And a sixth step: and averaging the plurality of sets of volume values and density values obtained in the fifth step.
The utility model adopts the air pressure method to test the volume and the density of irregular solid particles, the function is multiple, the precision is higher, the irregular solid particles are put into a calibrated test tank, under the same air pressure value of the test tank, the volume of the irregular solid particles to be detected is different before and after the irregular solid particles are put into the test tank, the volume of the irregular solid particles to be detected is obtained through the volume difference, the mass of the irregular solid particles to be detected is obtained through a weighing sensor, the density of the irregular solid particles to be detected is further obtained, an air flow sensor is used for detecting the air flow discharged by the test tank, when the air discharge is started and ended, the singlechip starts to time, the air flow sensor feeds back the signal to the singlechip, the singlechip is converted into the air volume according to the air flow and the time, a second air pressure sensor is used for detecting the air pressure in the test tank, a first air, and a locking device is arranged on the second clapboard and used for locking the second clapboard when the weight of the irregular solid particles is tested, namely the locking device enables the second clapboard to be in a locking state when the quality is tested, and the locking device releases the locking state of the second clapboard after the quality test is finished.
The locking device comprises a screw rod, the opening and closing of the second partition plate are realized by screwing the screw rod, and the structure is simple; the gas storage tank is provided with a heating and heat-insulating device and a temperature sensor, the heating and heat-insulating device is used for heating and insulating the gas storage tank, so that the gas in the gas storage tank is in a relatively constant temperature state and is suitable for occasions with different temperatures, and the temperature sensor is used for detecting the temperature of the gas in the gas storage tank; the heating and heat-preserving device comprises a heat-preserving tank, the gas storage tank is fixed in the heat-preserving tank, a gap is arranged between the outer side wall of the gas storage tank and the inner side wall of the heat-preserving tank, water for heat preservation is arranged in the gap, and gas in the gas storage tank is heated uniformly by adopting water bath heating; the first air pressure sensor is arranged on the air storage tank and used for detecting air pressure in the air storage tank so as to avoid overhigh air pressure in the air storage tank; the first valve, the second valve and the third valve are all electromagnetic valves, and the first valve, the second valve and the third valve are all electrically connected with the single chip microcomputer, so that the automation degree of the device is improved; the bottom of the test tank is provided with a buffer pad which plays a role in buffering.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic diagram of a test can;
FIG. 3 is a schematic view of the structure of the air storage tank;
FIG. 4 is a schematic view of the connection between the single chip microcomputer and the sensor of the present invention;
fig. 5 is a schematic structural diagram of the housing.
Detailed Description
As shown in fig. 1-5, the irregular solid particle pneumatic volume and density measuring device includes a gas storage tank 4, a test tank 8 and a single chip microcomputer 11, wherein the gas storage tank 4 is provided with a first gas inlet and a first gas outlet, the first gas inlet is connected with a first gas inlet pipe, the first gas inlet pipe is provided with a first gas pump 1 and a first valve 3, the first gas outlet is connected with a first gas outlet pipe, and the first gas outlet pipe is provided with a second gas pump 6 and a second valve 5; the test tank 8 comprises a second air inlet and a second air outlet, the second air inlet is connected with the first air outlet pipe, the second air outlet pipe is connected with the second air outlet pipe, a third valve 9 and a gas flow sensor 10 are arranged on the second air outlet pipe, a second gas pressure sensor 80 used for detecting the gas pressure inside the test tank 8 is installed on the test tank 8, and the second gas pressure sensor 80, the gas flow sensor 10, the first air pump 1 and the second air pump 6 are respectively electrically connected with the single chip microcomputer 11.
The test tank 8 comprises a tank body, a detachable top cover 82 is installed at the top of the tank body, a handrail 83 convenient to detach is arranged on the top cover 82, a second partition plate 85 is arranged in the tank body, and a weighing sensor 84 is installed in the second partition plate 85; one side of the second partition plate 85 is hinged with the tank body, a locking device is arranged on the second partition plate 85, the locking device enables the second partition plate 85 to be in a locking state when the quality is tested, and the locking device releases the locking state of the second partition plate 85 after the quality test is finished.
The locking device comprises a screw rod 88, the screw rod 88 is in threaded fit with the tank body, a threaded hole is formed in the side face of the second partition plate 85, the inner end of the screw rod 88 is matched with the threaded hole, and a handle is arranged at the outer end of the screw rod 88.
A heating and heat-preserving device and a temperature sensor 40 are arranged on the gas storage tank 4, the detection end of the temperature sensor 40 extends into the gas storage tank 4, and the temperature sensor 40 is electrically connected with the singlechip 11; the test tank 8 is externally sleeved with a heat insulation sleeve 81.
Heating heat preservation device includes heat preservation 42, gas holder 4 is fixed in heat preservation 42, there is the interval between the lateral wall of gas holder 4 and heat preservation 42's the inside wall, be equipped with the water that is used for heat preservation in this interval, be equipped with water inlet and water outlet on heat preservation 42, be equipped with water tank 2 outside heat preservation 42, heat preservation 42's water inlet and water outlet lead to pipe and 2 intercommunications of water tank respectively, install the water pump on heat preservation 42's water inlet and water tank 2's the water pipe of being connected, be equipped with electric heater unit in water tank 2, electric heater unit adopts the bar heater, electric heater unit and water pump are connected with 11 electricity of singlechip respectively.
The first air pressure sensor 41 is installed on the air storage tank 4, and the first air pressure sensor 41 is electrically connected with the singlechip 11.
The first valve 3, the second valve 5 and the third valve 9 are all electromagnetic valves, and the first valve 3, the second valve 5 and the third valve 9 are all electrically connected with the single chip microcomputer 11; the singlechip 11 is electrically connected with a timer.
A cushion 87 is provided at the bottom of the test tank 8.
The measuring device further comprises a shell 13, a detachable cover plate is arranged at the top of the shell 13, and the top cover 82 of the test tank 8 extends out of the cover plate or the top cover 82 of the test tank 8 is flush with the cover plate; a first partition plate 15 is arranged in the shell 13, the test tank 8, the single chip microcomputer 11, the first air pump 1, the second air pump 6, the first valve 3, the second valve 5, the third valve 9 and the gas flow sensor 10 are all arranged on the first partition plate 15, and the gas storage tank 4, the water tank 2 and the water pump are arranged below the first partition plate 15.
The single chip microcomputer 11 is electrically connected with a display 12, the display 12 is used for displaying a test result, and the display 12 is fixed outside the shell 13.
The singlechip 11 is installed on the controller 14, and the controller 14 is installed on the first partition 15.
The use method of the irregular solid particle air pressure type volume and density measuring device comprises the following steps:
the first step is as follows: the air storage tank 4 is inflated, the first valve 3 is opened, the single chip microcomputer 11 controls the first air pump 1 to work, the first air pump 1 pumps air into the air storage tank 4, after inflation is completed, the single chip microcomputer 11 controls the first air pump 1 to stop working, and the first valve 3 is closed.
The second step is that: the testing tank 8 is calibrated, when no irregular solid particles are placed in the testing tank 8, the second valve 5 is opened, the singlechip 11 controls the second air pump 6 to pump air in the air storage tank 4 into the testing tank 8, the second air pressure sensor 80 is used for detecting air pressure in the testing tank 8, and when the air pressure of the testing tank 8 is p, the singlechip 11 controls the second air pump 6 to stop working and closes the second valve 5; the third valve 9 is opened, the single chip microcomputer 11 starts timing, the first gas flow sensor 10 is used for testing the gas flow entering the test tank 8, when the air pressure in the test tank 8 is recovered to an initial value, the third valve 9 is closed, the single chip microcomputer 11 stops timing, the first gas flow sensor 10 feeds back a signal to the single chip microcomputer 11, and the single chip microcomputer 11 converts the gas flow and the timing time into a gas volume VContainer。
The third step: the test tank 8 tests the weight of irregular solid particles, the top cover 82 of the test tank 8 is opened, the locking device locks the second partition plate 85, the irregular solid particles are placed on the second partition plate 85 of the test tank 8, the top cover 82 is covered, the weighing sensor 84 on the second partition plate 85 weighs the irregular solid particles, the weight of the irregular solid particles is m, the irregular solid particles are fed back to the single chip microcomputer 11, after weighing is completed, the locking device unlocks the second partition plate 85, and the irregular solid particles enter the test tank 8 along the second partition plate 85.
The fourth step: the test tank 8 tests the volume of irregular solid particles, the second valve 5 is opened, the singlechip 11 controls the second air pump 6 to pump air in the air storage tank 4 into the test tank 8, and when the air pressure of the test tank 8 is p, the singlechip 11 controls the second air pump 6 to stop working and closes the second valve 5; opening the third valve 9, starting timing by the single chip microcomputer 11, closing the third valve 9 when the air pressure in the test tank 8 is recovered to an initial value, stopping timing by the single chip microcomputer 11, feeding back a signal to the single chip microcomputer 11 by the first gas flow sensor 10, and converting the signal into a gas volume V by the single chip microcomputer 11 according to the gas flow and the timing time0Then the volume of the irregular solid particles is Vs＝(VContainer-V0) Is not regularThe density of the solid particles is m/(V)Container-V0)。
The fifth step: repeating the operations from the second step to the fourth step for N times, wherein N is more than or equal to 2, and in each operation, in the second step, the air pressure values in the test tank 8 are different, namely, the volume and the density of the irregular solid particles are tested under different air pressure values, so that a plurality of groups of volume values and density values are obtained.
And a sixth step: and averaging the plurality of sets of volume values and density values obtained in the fifth step.
In this embodiment, the single chip microcomputer 11 employs STC12C5a60S2 with an a/D conversion function, which has functions of high speed, low power consumption, and strong interference, and can convert signals of the components such as the gas flow sensor 10, the second air pressure sensor 80, the first air pressure sensor 41, and the temperature sensor 40 into digital signals that can be recognized by the single chip microcomputer 11, which is the prior art, and is not described herein again, the single chip microcomputer 11STC12C5a60S2 does not have a timing function, when in use, a timer is connected to the single chip microcomputer 11 for timing, and when in use, if the selected single chip microcomputer 11 has the timing function, the timer does not need to be additionally connected.
The first air pressure sensor 41 and the second air pressure sensor 80 are Hangzhou American control MIK-P300 air pressure sensors, the air flow sensor 10 adopts a gas volume flow meter of Jiangsu Fenghui instrument limited, and the temperature sensor 40 adopts an Othon electronic AHT15 integrated temperature and humidity sensor.
The utility model adopts the air pressure method to test the volume and the density of irregular solid particles, the function is multiple, the precision is higher, the irregular solid particles are put into the calibrated test tank 8, under the same air pressure value of the test tank 8, the irregular solid particles to be detected are put in, the volume of the test tank 8 is different, the volume of the irregular solid particles to be detected is obtained through the volume difference, the mass of the irregular solid particles to be detected is obtained through the weighing sensor 84, the density of the irregular solid particles to be detected is further obtained, the gas flow sensor 10 is used for detecting the gas flow discharged by the test tank 8, when the exhaust starts and ends, the singlechip 11 starts to time, the gas flow sensor 10 feeds back the signal to the singlechip 11, the singlechip 11 is converted into the gas volume according to the gas flow and the time of the time counting, the second air pressure sensor 80 is used for detecting the air pressure in the, the first air pump 1 and the second air pump 6 facilitate air delivery, and the second partition plate 85 is provided with a locking device, the locking device is used for locking the second partition plate 85 when the weight of the irregular solid particles is tested, namely when the quality is tested, the locking device enables the second partition plate 85 to be in a locking state, and after the quality test is completed, the locking device releases the locking state of the second partition plate 85.
The specific operation is carried out according to the use method of the irregular solid particle air pressure type volume and density measuring device.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (8)
1. Irregular solid particle vapour-pressure type volume and density measurement device, including gas holder, test tank and singlechip, its characterized in that: the air storage tank is provided with a first air inlet and a first air outlet, the first air inlet is connected with a first air inlet pipe, the first air inlet pipe is provided with a first air pump and a first valve, the first air outlet is connected with a first air outlet pipe, and the first air outlet pipe is provided with a second air pump and a second valve; the testing tank comprises a second air inlet and a second air outlet, the second air inlet is connected with the first air outlet pipe, the second air outlet is connected with a second air outlet pipe, a third valve and a gas flow sensor are arranged on the second air outlet pipe, a second gas pressure sensor for detecting the gas pressure in the testing tank is arranged on the testing tank, and the second gas pressure sensor, the gas flow sensor, the first air pump and the second air pump are respectively and electrically connected with the single chip microcomputer;
the test tank comprises a tank body, a detachable top cover is installed at the top of the tank body, a second partition plate is arranged in the tank body, and a weighing sensor is installed in the second partition plate; one side of the second partition plate is hinged with the tank body, a locking device is arranged on the second partition plate, the locking device enables the second partition plate to be in a locking state when the quality is tested, and the locking device releases the locking state of the second partition plate after the quality test is finished.
2. The irregular solid particle pneumatic volume and density measuring device as set forth in claim 1, wherein: the locking device comprises a screw rod, the screw rod is in threaded fit with the tank body, a threaded hole is formed in the side face of the second partition plate, the inner end of the screw rod is matched with the threaded hole, and a handle is arranged at the outer end of the screw rod.
3. The irregular solid particle pneumatic volume and density measuring device as set forth in claim 1, wherein: the gas storage tank is provided with a heating and heat-preserving device and a temperature sensor, the detection end of the temperature sensor extends into the gas storage tank, and the temperature sensor is electrically connected with the single chip microcomputer; the test tank is sleeved with a heat insulation sleeve.
4. The irregular solid particle pneumatic volume and density measuring device as set forth in claim 3, wherein: heating heat preservation device includes the heat-preserving container, the gas holder is fixed in the heat-preserving container, there is the interval between the lateral wall of gas holder and the inside wall of heat-preserving container, be equipped with in this interval and be used for heat retaining water, be equipped with water inlet and water outlet on the heat-preserving container, be equipped with the water tank outside the heat-preserving container, the water inlet and the water outlet of heat-preserving container lead to pipe and water tank intercommunication respectively, install the water pump on the water inlet of heat-preserving container and the water pipe of being connected of water tank, be equipped with electric heater unit in the water tank, electric heater unit and water.
5. The irregular solid particle pneumatic volume and density measuring device as set forth in claim 4, wherein: and a first air pressure sensor is arranged on the air storage tank and electrically connected with the singlechip.
6. The irregular solid particle pneumatic volume and density measuring device as set forth in claim 1, wherein: the first valve, the second valve and the third valve are all electromagnetic valves, and the first valve, the second valve and the third valve are all electrically connected with the single chip microcomputer; the singlechip is electrically connected with a timer.
7. The irregular solid particle pneumatic volume and density measuring device as set forth in claim 1, wherein: and a buffer cushion is arranged at the bottom of the test tank.
8. The irregular solid particle pneumatic volume and density measuring device according to any one of claims 1-7, wherein: the measuring device also comprises a shell, a detachable cover plate is arranged at the top of the shell, and a top cover of the test tank extends out of the cover plate or is flush with the cover plate; a first partition plate is arranged in the shell, the test tank, the single chip microcomputer, the first air pump, the second air pump, the first valve, the second valve, the third valve and the air flow sensor are all arranged on the first partition plate, and the air storage tank, the water tank and the water pump are arranged below the first partition plate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110440867A (en) * | 2019-08-21 | 2019-11-12 | 许昌学院 | Irregular solid particle air pressure co-volume and density measuring equipment and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110440867A (en) * | 2019-08-21 | 2019-11-12 | 许昌学院 | Irregular solid particle air pressure co-volume and density measuring equipment and its application method |
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