CN218180052U

CN218180052U - Device for measuring gas volume

Info

Publication number: CN218180052U
Application number: CN202222681190.0U
Authority: CN
Inventors: 汤友为; 卢心怡; 任宇哲; 马露; 徐云霞; 嵇宁; 闫兴帅; 李赟
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2022-04-27
Filing date: 2022-10-12
Publication date: 2022-12-30
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses a device for measuring gas volume, which relates to a measuring device, comprising a shell, an inner bin is arranged in the shell, a flexible air bag and a temperature sensor are arranged in the inner bin in sequence, the outlet end of the flexible air bag is connected with a gas injection monitoring device which is arranged outside the inner bin and can inject gas into the inner bin and monitor the pressure in the inner bin, a measuring cylinder is also arranged outside the shell, the top of the side wall of the inner bin close to the measuring cylinder is connected with the measuring cylinder through a horizontal pipe, a cut-off valve with an adjusting end arranged above the shell is arranged at the end part of the horizontal pipe close to the inner bin, the bottom of the side wall of the inner bin close to the measuring cylinder is connected with the measuring cylinder through a communicating pipe, the bottom of the measuring cylinder is also connected with an adjusting valve, and the temperature sensor and the gas injection monitoring device are respectively connected with a controller arranged at the top of the shell; a hatch cover is arranged on the shell above the gas injection monitoring device; the utility model discloses can effectively carry out the measurement of gas volume.

Description

Device for measuring gas volume

Technical Field

The utility model relates to a measuring device especially relates to a gas volume measuring device.

Background

In the chemical field, it is often necessary to measure the volume of gas, but for the sake of calculation, the volume of gas at 273.15K and 101.325kPa (STP state) is generally used because the volume of gas is greatly influenced by temperature and pressure. The drainage and gas collection method is a commonly used method for collecting gas, is generally used for collecting gas which is not dissolved in water and does not react, and has certain limitation. The utility model provides a volume measurement device who is suitable for most gas.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides a measure device of gaseous volume to solve among the prior art drainage method survey the limited technical problem of gaseous volume application scope.

The utility model discloses a realize through following technical scheme:

the utility model provides a device for measuring gas volume, includes the casing, be provided with in the casing rather than the interior storehouse of being connected through a plurality of bracing pieces and the inner chamber top is the horizontal plane, flexible gasbag and temperature sensor have set gradually in the interior storehouse, the exit end of flexible gasbag with locate outside the interior storehouse and can be connected to the gas injection monitoring devices of its internal pressure of its gas injection and monitoring, gas injection monitoring devices's bottom outer wall with interior storehouse top threaded connection, the outside of casing still is provided with the graduated flask that top level is not less than casing top level elevation and bottom level elevation are less than interior storehouse bottom level elevation, the lateral wall top that the graduated flask was closed on to the interior storehouse is connected with the graduated flask through the horizontal pipe that the horizontal plane of inner chamber top place coincides with interior storehouse inner chamber top place horizontal plane, and install the truncation valve that the regulating terminal located the casing top on the tip that the horizontal pipe closes on the interior storehouse, the lateral wall bottom that the graduated flask was close on through communicating pipe is connected with the graduated flask, the bottom of graduated flask still is connected with the regulating valve, temperature sensor and gas injection monitoring devices are connected with the controller installed at the casing top respectively; and a hatch cover is arranged on the shell above the gas injection monitoring device.

Further, the gas injection monitoring device comprises a connecting pipe sleeved outside the outlet end of the flexible air bag, a rubber plug arranged in the outlet end of the flexible air bag and having the same outer diameter as the inner diameter of the connecting pipe, gas injection holes arranged in the rubber plug and penetrating through two ends of the bottom of the rubber plug, a gas pressure sensor embedded in the rubber plug and having a detection end communicated with the inner cavity of the flexible air bag, a sealing gasket arranged below the rubber plug and attached to the rubber plug, and having one end fixedly connected with the rubber plug and the other end sealing the bottom end of the gas injection hole, and a sealing cover sleeved on the top end of the rubber plug and used for sealing the top end of the gas injection hole; the outer wall of the bottom end of the connecting pipe is in threaded connection with the top of the inner bin.

Further, the vertical outer wall of the shell is connected with the measuring cylinder through a support.

Furthermore, a collecting barrel with the range larger than the sum of the volume of the inner cavity of the inner bin, the volume of the inner cavity of the horizontal pipe, the volume of the inner cavity of the measuring cylinder and the volume of the inner cavity of the communicating pipe is also arranged.

Further, a drain valve is installed at the bottom of the vertical outer wall of the shell.

Furthermore, the top of the shell is also provided with a level gauge with a measuring surface parallel to the plane where the top of the inner bin is located.

Furthermore, an adjustable supporting leg is respectively arranged at four corners of the bottom of the shell.

Further, the top of casing still install and be connected with the controller and be used for showing temperature sensor and detect the display of temperature and baroceptor detection atmospheric pressure.

Compared with the prior art, the utility model has the following advantages:

the utility model provides a pair of measure device of gas volume can effectively carry out the measurement of gas volume, adopts flexible gasbag can avoid the drawback of gas-soluble in water, and equipment application scope is wide.

Drawings

FIG. 1 is a schematic diagram of a gas volume measurement according to an embodiment;

FIG. 2 is a schematic diagram of the explosion structure of the gas injection monitoring device in the example.

In the figure: 1. a housing; 2. an inner bin; 3. a flexible bladder; 4. a temperature sensor; 5. a gas injection monitoring device; 6. a measuring cylinder; 7. a horizontal tube; 8. a shut-off valve; 9. a communicating pipe; 10. adjusting a valve; 11. a controller; 12. a hatch cover; 13. a connecting pipe; 14. a rubber plug; 15. a gas injection hole; 16. an air pressure sensor; 17. a gasket; 18. a sealing cover; 19. a support; 20. a collection barrel; 21. a drain valve; 22. a level gauge; 23. an adjustable leg; 24. and a display.

Detailed Description

The technical solutions of the present invention will be described clearly and completely below with reference to embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

With reference to fig. 1 and 2, the present embodiment provides a device for measuring a gas volume, which includes a housing 1, in the present embodiment, the housing 1 is specifically a rectangular parallelepiped structure, a rectangular parallelepiped inner chamber 2 having a hollow inner cavity and a horizontal top of the inner cavity is disposed in the housing, and an outer wall of the inner chamber 2 is connected to an inner wall of the housing 1 through a plurality of support rods, so as to fix the inner chamber 2; secondly, a temperature sensor 4 and a flexible airbag 3 are sequentially arranged in the inner bin 2, the flexible airbag 3 is made of rubber materials which are easy to stretch and expand, the occupied volume of the flexible airbag 3 is small, the flexible airbag can be flattened when no gas exists in the flexible airbag, the flexible airbag is easy to expand when being inflated and only generates tiny pressure on the gas, the temperature sensor is used for detecting the temperature in the inner bin 2, in order to facilitate the inflation of the gas into the flexible airbag 3 and the monitoring of the internal air pressure of the flexible airbag, in the embodiment, the outlet end of the flexible airbag 3 is connected with a gas injection monitoring device 5 arranged outside the inner bin 2, the structure of the gas injection monitoring device 5 can meet the requirements of the gas to be detected injected into the flexible airbag 3 connected with the gas injection monitoring device and the internal air pressure of the gas injection monitoring device, and the structure of the gas injection monitoring device can meet the requirements, in the embodiment, the gas injection monitoring device 5 comprises a connecting pipe 13, a rubber plug 14, an air pressure sensor 16, a sealing gasket 17 and a sealing cover 18, a connecting pipe 13 is sleeved outside the outlet end of the flexible air bag 3, the top of the outlet end of the flexible air bag 3 is turned outwards on the outer side of the connecting pipe 13, then a rubber plug 14 with the outer diameter the same as the inner diameter of the connecting pipe 13 is plugged into the flexible air bag 3, so that the outlet end of the flexible air bag 3 can be extruded, gaps between the outer wall of the flexible air bag 3 and the inner wall of the connecting pipe 13 and between the inner wall of the outlet end of the flexible air bag 3 and the outer wall of the rubber plug 14 can be effectively sealed, in order to inject air into the flexible air bag 3 through the rubber plug 14, air injection holes 15 which penetrate through the rubber plug 14 at two ends of the bottom are arranged in the rubber plug 14, in order to monitor the air pressure in the flexible air bag 3, an air pressure sensor 16 is embedded in the rubber plug 14, and the detection end of the air pressure sensor 16 is communicated with the inner cavity of the flexible air bag 3, namely the detection end of the air pressure sensor 16 is communicated with the space below the rubber plug 14, in order to avoid that the air in the flexible air bag 3 is reversely flowed out of the air injection holes 15, the sealing gasket 17 is arranged at the bottom of the rubber plug 14 and is attached to the rubber plug, one end of the sealing gasket 17 is fixedly connected with the bottom of the rubber plug 14, and the other end of the sealing gasket 17 seals the bottom end of the gas injection hole 15, namely the sealing gasket 17 plays a role of a one-way valve; meanwhile, in order to facilitate the connection of the gas injection monitoring device 5 and the inner bin 2, the outer wall of the bottom end of the connecting pipe 13 is in threaded sealing connection with the top of the inner bin 2.

The use method of the gas injection monitoring device 5 in this embodiment is as follows: the connecting pipe 13 is sleeved on the outer side of the outlet end sleeve of the flexible air bag 3, the top of the outlet end of the flexible air bag 3 is turned outwards at the top end of the connecting pipe 13, then the rubber plug 14 is plugged into the connecting pipe 13 from top to bottom to clamp and seal the outlet end of the flexible air bag 3, and then the bottom end of the connecting pipe 13 is in threaded connection with the top of the inner bin 2, when the connection is completed, the horizontal plane of the bottom of the connecting pipe 13, the horizontal plane of the bottom of the rubber plug 14 and the horizontal plane of the top of the inner cavity of the inner bin 2 coincide, so that the occupation of the space in the inner bin 2 by the gas injection monitoring device 5 can be reduced, and the later-stage measurement precision is improved; after the connection is finished, gas is injected into the flexible airbag 3 through the top of the gas injection hole 15, the sealing gasket 17 plays a role of a one-way valve in the process until the injection amount reaches a preset value, the gas injection is stopped, then the sealing cover 18 is in threaded connection with the top end of the rubber plug 14, the top end of the gas injection hole 15 is sealed, the gas injection is finished, and the gas pressure sensor 16 can detect the gas pressure in the flexible airbag 3.

When the arrangement is completed, in order to measure the gas volume, a measuring cylinder 6 is further arranged on the outer side of the shell 1, the top horizontal elevation of the measuring cylinder 6 is not smaller than the top horizontal elevation of the shell 1, and the bottom horizontal elevation of the measuring cylinder 6 is lower than the bottom horizontal elevation of the inner bin 2, the arrangement aims to facilitate later-stage gas volume measurement, meanwhile, the top of the side wall of the inner bin 2 close to the measuring cylinder 6 is connected with the measuring cylinder 6 through a horizontal pipe 7, in order to improve the measurement accuracy, the horizontal plane of the top of the inner cavity of the horizontal pipe 7 is coincided with the horizontal plane of the top of the inner cavity of the inner bin 2, a cut-off valve 8 with an adjusting end arranged above the shell 1 is arranged at the end part of the horizontal pipe 7, so that the water flow in the horizontal pipe 7 can be cut off, secondly, the bottom of the side wall of the inner bin 2 close to the measuring cylinder 6 is connected with the measuring cylinder 6 through a communicating pipe 9, in order to facilitate the discharge of water in the measuring cylinder 6, the bottom of the measuring cylinder 6 is connected with an adjusting valve 10 so that the inner liquid level of the measuring cylinder 6 can be adjusted, in order to facilitate the adjustment of the inner liquid level, in the measuring cylinder, in order to facilitate the display of the detection temperature sensor 4 and the air pressure, and the gas injection monitoring device 5 (namely, and the air pressure sensor 16) are respectively connected with a controller 11 arranged at the top of the shell 1; to facilitate the operation of the gas injection monitoring apparatus 5, a hatch 12 is provided on the housing 1 above it.

The working principle of the device provided by the embodiment is as follows:

firstly, keeping the equipment in a horizontal state, namely the top of an inner cavity of the inner bin 2 is a horizontal plane, no gas exists in the flexible air bag 3 and is effectively connected with a gas injection monitoring device 5, opening a cut-off valve 8 and closing an adjusting valve 10, injecting water into the flexible air bag through the top end of a measuring cylinder 6, enabling water flow to enter the inner bin 2 through a communicating pipe 9, continuously injecting the water until the horizontal pipe 7 is filled with the water and the liquid level in the measuring cylinder 6 exceeds the liquid level in the horizontal pipe 7 (indicating that the inner bin 2 is filled with the water), stopping injecting the water into the measuring cylinder 6, recording the liquid level in the measuring cylinder 6 as an initial liquid level at the moment, then opening a cabin cover 12, taking off a sealing cover 18, injecting the gas into the flexible air bag 3 through the top end of a hole 15 until the input amount reaches a set amount, covering the sealing cover 18 on the top end of a connecting pipe 13 to seal a gas injection hole 15, and extruding a part of water in the inner bin 2 into the measuring cylinder 6 through the horizontal pipe 7 and the communicating pipe 9 by the expansion of the flexible air bag 3 in the process (the liquid level in the measuring cylinder 6 is increased);

then, ice-water mixture is injected into a space between the shell 1 and the inner bin 2 through the hatch cover 12 and the shell 1 is filled, then the whole equipment is kept still, the ice-water mixture cools the water in the inner bin 2 and the gas in the flexible air bag 3, the temperature sensor 4 can detect the temperature in the inner bin 2, when the temperature of the water in the inner bin 2 and the temperature in the flexible air bag 3 are the same as the temperature of the ice-water mixture, the liquid level in the measuring cylinder 6 at the moment is a reading liquid level, and the water flow volume between the reading liquid level and the initial liquid level is the volume of the gas in the flexible air bag 3 under the conditions of the air pressure detected by the air pressure sensor 16 and the temperature detected by the temperature sensor 4 at the moment.

When the temperature is not changed and the gas volume corresponding to the pressure value detected by the pressure sensor 16 at the moment needs to be detected, water is injected into the vector cylinder 6, the pressure applied to the flexible airbag 3 is increased and can be contracted, the water injection is stopped when the pressure value detected by the pressure sensor 16 is increased to a target value, then the liquid level of the measuring cylinder 6 at the moment is recorded as a recording liquid level A, then the water in the inner bin 2, the water in the measuring cylinder 6, the water in the horizontal pipe 7 and the water in the communicating pipe 9 are all discharged and collected through the regulating valve 10, and the total volume of the water is measured, then the gas volume = the total volume of the inner cavity of the inner bin 2-the total volume of the inner cavity of the measuring cylinder 6-the volume of the horizontal pipe 7-the volume of the communicating pipe 9 under the corresponding condition (under the target pressure value and the temperature), wherein the volume of the inner cavity of the inner bin 2, the volume of the inner cavity of the horizontal pipe 7 and the volume of the communicating pipe 9 are measured when the equipment is prepared, and are known values.

When the temperature is unchanged and the gas volume corresponding to the pressure value detected by the air pressure sensor 16 is required to be detected to be lower than the temperature, the block valve 8 is closed, then the water in the measuring cylinder 6 is pumped out from the upper part of the measuring cylinder 6, the flexible air bag 3 is expanded corresponding to the pressure reduction, the air pressure sensor 16 stops pumping when the pressure value is detected to be reduced until the pressure value is a target value, then the liquid level of the measuring cylinder 6 is recorded as a recording liquid level B (higher than the horizontal plane of the top of the inner cavity of the horizontal tube 7 or lower than the horizontal plane of the bottom of the inner cavity of the horizontal tube 7), then the water in the inner bin 2, the water in the measuring cylinder 6, the water in the horizontal tube 7 and the water in the communicating tube 9 are all discharged through the regulating valve 10 and collected, and the total volume of the recording liquid level B is measured, then the gas volume = the volume of the inner cavity of the inner bin 2-the total volume of the inner cavity-the horizontal tube 7 under the corresponding conditions (when the recording liquid level B is higher than the horizontal plane of the top of the inner cavity of the horizontal tube 7), the volume of the communicating tube 9 is not included, wherein the inner cavity of the inner bin 2 and the horizontal tube 7 and the volume of the communicating tube 7 is prepared, and the volume of the device is known volume of the communicating tube 7.

Wherein, in this embodiment, in order to avoid the volume influence calculated value that flexible gasbag 3 exists itself, make the inner chamber volume of inner bin 2 calculate the calibration through following mode, when not injecting gas in flexible gasbag 3 (being in the platykurtic and in casing 1 and injecting the ice water mixture), open shut-off valve 8, inject water to it through graduated flask 6 top, until the liquid level is higher than the horizontal plane of horizontal pipe 7 inner chamber top in graduated flask 6, record the liquid level in graduated flask 6 this moment and be record liquid level C, then through governing valve 10 with inner bin 2, in graduated flask 6, in horizontal pipe 7 and in communicating pipe 9 water all discharge and collect and measure its total volume a, then the volume of inner bin 2 inner chamber = total volume a-record the volume that liquid level C corresponds-horizontal pipe 7 inner chamber volume-9 inner chamber volume.

Through above-mentioned setting, can effectively carry out the measurement of gas volume.

When the pressure sensor 16 detects the standard pressure of 101.325kPa and the temperature in the inner bin 2 is 273.15K, the obtained gas volume is the standard volume of the gas.

In particular, in order to facilitate the discharge of the ice-water mixture inside the casing 1, in the present embodiment, the bottom of the vertical outer wall of the casing 1 is provided with a drain valve 21.

In particular, in order to stabilize the connection relationship between the measuring cylinder 6 and the inner chamber 2, in the present embodiment, a bracket 19 for connecting the measuring cylinder 6 is installed on the vertical outer wall of the housing 1.

Particularly, be convenient for collect the water in interior storehouse 2, graduated flask 6 etc, make the composition of equipment still include the range be greater than interior storehouse 2 inner chamber volume, horizontal tube 7 inner chamber volume, graduated flask 6 inner chamber volume and communicating pipe 9 inner chamber volume sum collecting vessel 20, make water discharge carry out the volume calculation in collecting vessel 20 promptly when collecting water, the later stage recycle of the water of being convenient for simultaneously.

In particular, in order to facilitate observation of whether the top of the inner bin 2 is in a horizontal state, the top of the shell 1 is also provided with a level 22 with a measuring surface parallel to the plane where the top of the inner bin 2 is located, namely, the plane where the top of the inner bin 2 is located is a horizontal plane when the detection result of the level 22 is in the horizontal state, so that the accuracy of the measuring result is convenient to guarantee.

In particular, in order to facilitate reading of the detection data, the display 24 connected to the controller 11 for displaying the temperature detected by the temperature sensor 4 and the air pressure detected by the air pressure sensor 16 is further installed on the top of the housing 1 in the present embodiment, so as to facilitate displaying and reading of the detection data.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a device for measuring gas volume, includes the casing, its characterized in that, be provided with in the casing rather than the interior storehouse of being connected through a plurality of bracing pieces and the inner chamber top is the horizontal plane, flexible gasbag and temperature sensor have set gradually in the interior storehouse, the exit end of flexible gasbag with locate outside the interior storehouse and can be connected to the gas injection monitoring devices of its internal pressure of its gas injection and monitoring, gas injection monitoring devices's bottom outer wall with interior storehouse top threaded connection, the outside of casing still is provided with the graduated flask that top level is not lower than casing top level elevation and bottom level elevation is less than interior storehouse bottom level elevation, the lateral wall top that the interior storehouse closes on the graduated flask is connected with the graduated flask gas injection through the horizontal plane that inner chamber top place is coincided with interior storehouse inner chamber top place horizontal plane, and the horizontal tube that the end was located the casing top is installed on the tip that the horizontal tube closes on the interior storehouse and is held the shut-off valve, the lateral wall bottom that the graduated flask closes on the graduated flask is connected with the graduated flask through communicating pipe, the bottom of graduated flask still is connected with the governing valve, temperature sensor and monitoring devices are connected with the controller installed at the casing top respectively; and a hatch cover is arranged on the shell above the gas injection monitoring device.

2. The device for measuring the gas volume according to claim 1, wherein the gas injection monitoring device comprises a connecting pipe sleeved outside the outlet end of the flexible airbag, a rubber plug arranged in the outlet end of the flexible airbag and having the same outer diameter as the inner diameter of the connecting pipe, gas injection holes arranged in the rubber plug and penetrating through two ends of the bottom of the rubber plug, a gas pressure sensor embedded in the rubber plug and having a detection end communicated with the inner cavity of the flexible airbag, a sealing gasket arranged below the rubber plug and attached to the rubber plug and having one end fixedly connected with the rubber plug and the other end sealing the bottom end of the gas injection hole, and a sealing cover sleeved on the top end of the rubber plug and used for sealing the top end of the gas injection hole; the outer wall of the bottom end of the connecting pipe is in threaded connection with the top of the inner bin.

3. A device for measuring volume of gas as claimed in claim 2, wherein the vertically outer wall of the housing is connected to the measuring cylinder by brackets.

4. The device for measuring the volume of gas as claimed in claim 3, wherein a collecting barrel with a range larger than the sum of the volume of the inner cavity of the inner bin, the volume of the inner cavity of the horizontal pipe, the volume of the inner cavity of the measuring cylinder and the volume of the inner cavity of the communicating pipe is further arranged.

5. A device for measuring volume of gas as claimed in claim 4, wherein a drain valve is mounted to the bottom of the vertical outer wall of the housing.

6. A device for measuring gas volume according to claim 5, wherein the top of the housing is further provided with a level having a measuring surface parallel to the plane of the top of the inner chamber.

7. A device for measuring volume of gas as claimed in claim 6, wherein an adjustable leg is mounted to each of the four corners of the bottom of the housing.

8. The apparatus of claim 7, wherein a display connected to the controller for displaying the temperature detected by the temperature sensor and the pressure detected by the pressure sensor is further installed on the top of the housing.