CN216925687U - Gas flow measurement and control device for laboratory - Google Patents

Abstract

The utility model discloses a gas flow measurement and control device for a laboratory, which comprises a shell, wherein the top of the shell is provided with a water inlet and outlet, a rubber plug is arranged in the water inlet and outlet, a first partition plate is fixed in the shell, and the shell is divided into a gas storage chamber and a water discharge chamber by the first partition plate; the part of the side wall of the shell, which is positioned in the air storage chamber, is provided with scale marks for measuring the volume of water to be drained; the first partition plate is provided with a drain pipe, the lower end of the drain pipe extends to one side close to the bottom plate of the shell, the drain pipe is provided with a first valve, the side wall of the shell is provided with a second through hole, an operating handle of the first valve extends out of the shell, and the first valve is hermetically connected with the second through hole; a third through hole is formed in the part, located in the air storage chamber, of the side wall of the shell, a Y-shaped pipe is arranged in the third through hole, a first port of the Y-shaped pipe is communicated with an external air source, a second valve is arranged on a pipeline of the external air source, a second port of the Y-shaped pipe is communicated with an air using device, a third valve is arranged on the pipeline of the air using device, and a third port of the Y-shaped pipe is fixed to the third through hole.

Description

Gas flow measurement and control device for laboratory

Technical Field

The utility model belongs to the technical field of gas flow measurement, and particularly relates to a gas flow measurement and control device for a laboratory.

Background

The gas flow measurement and control device is used for measuring the gas flow accurately, but the gas flow measurement and control method cannot simultaneously have the functions of measuring and controlling the gas flow and measuring and using the gas flow at once, so that a gas flow measurement and control device for a laboratory is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gas flow measurement and control device for a laboratory, which solves the technical problems that in the prior art, a drainage method is accurate in measurement but cannot simultaneously realize measurement and control of gas flow and measurement and use at once.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a gas flow measurement and control device for a laboratory comprises a shell, wherein a water inlet and outlet is formed in the top of the shell, a rubber plug capable of covering the water inlet and outlet is arranged in the water inlet and outlet, a first partition plate is fixed in the shell, and the shell is divided into an upper part and a lower part by the first partition plate and comprises a gas storage chamber positioned below the first partition plate and a drainage chamber positioned above the first partition plate; the side wall of the shell is positioned at the part of the air storage chamber, and scale marks for measuring the volume of water to be drained are arranged on the outer side wall of the shell along the vertical direction; a first through hole is formed in the first partition plate, a drain pipe is fixed in the first through hole, the upper end of the drain pipe is communicated with the drain chamber, the lower end of the drain pipe extends to one side close to the bottom plate of the shell, a first valve is arranged on the drain pipe, a second through hole is formed in the side wall of the shell corresponding to the first valve, an operating handle of the first valve extends out of the shell through the second through hole, and the first valve is connected with the second through hole in a sealing mode; be equipped with the third through-hole on the casing lateral wall, the third through-hole is located the below of first baffle and is close to in first baffle, is equipped with Y type pipe in the third through-hole, and the first port of Y type pipe can be put through with the pipeline of outside air supply, is equipped with the second valve on the pipeline of outside air supply, and the second port of Y type pipe can be put through with the pipeline of gas appliances, is equipped with the third valve on the pipeline of gas appliances, and the third port of Y type pipe is fixed at the third through-hole.

The device is provided with a closed space by arranging a shell, and the shell can be made of transparent materials such as glass and the like; by arranging the water inlet and outlet port and the rubber plug, water in the shell can be injected into the shell through the water inlet and outlet port or poured out by inverting the shell, and the water inlet and outlet port can be opened or closed by the rubber plug; the shell is divided into an air storage chamber and a drainage chamber by arranging a first partition plate; the Y-shaped pipe is arranged, so that an external gas source, a shell internal measuring and gas using device can be mutually communicated through the Y-shaped pipe and a related pipeline, when the flow is measured, the third valve is closed, the second valve and the first valve are opened, the external gas source is communicated with the shell internal, the gas using device is blocked with the external gas source and the shell internal, then the flow of the gas is measured, when the gas flow value reaches a preset value, the first valve is closed, the third valve and the second valve are opened, the external gas source is communicated with the gas using device, and the gas using device is supplied with the gas with the corresponding flow, so that the function of using the gas immediately after measuring is achieved; when water is injected into the shell, the highest liquid level of water flow is not higher than the third port of the Y-shaped pipe, the water flow is prevented from entering the Y-shaped pipe, the actual volume of discharged water during measurement is larger than the volume displayed in the scale mark, so that an error is generated in measurement, and a second valve is arranged for controlling the connection and disconnection between an external air source and a measuring and air-using device in the shell; the third valve is arranged and used for controlling the connection and disconnection between the gas using device and an external gas source as well as between the gas using device and the inner side of the shell; the water storage chamber is communicated with the drainage chamber by arranging the drainage pipe; through setting up first valve for the break-make of control drain pipe makes cistern and drainage chamber intercommunication or separation, the valve body and the second through-hole sealing connection of first valve, through making the operating handle of first valve stretch out the casing, the user can be in the break-make of the outside control drain pipe of casing.

Furthermore, one end, far away from the drain pipe, of the first partition plate is bent upwards to form an L shape, the bent part of the first partition plate and the side wall of the shell jointly enclose an air inlet area of the air storage chamber, and a third through hole provided with the Y-shaped pipe is formed in the part, located on the side wall of the shell, of the air inlet area.

Through setting up the intake zone, when measuring gas flow, make during gaseous advanced intake zone that enters into the gas storage chamber, the structure in intake zone can produce cushioning effect to gas, can reduce gaseous velocity of flow, prevents that high-speed gas from directly getting into to make rivers splash in the casing.

Furthermore, a second partition plate is arranged in the drainage chamber, and the drainage chamber is divided into an upper part and a lower part and comprises a water collecting area positioned above the second partition plate and a water storage area positioned between the second partition plate and the first partition plate; the outer side wall of the shell is provided with a U-shaped pipe which enables the water storage area to be communicated with the water collection area, one pipe opening of the U-shaped pipe is arranged on the part, located on the water storage area, of the side wall of the shell, and the other pipe opening of the U-shaped pipe is arranged on the part, located on the water collection area, of the side wall of the shell.

Through setting up the second baffle, make the drainage chamber divide into catchment area and water storage area, if not set up the second baffle, when liquid was arranged to the drainage chamber, the rivers of higher liquid level can produce great pressure, so resistance when can increase the drainage makes the pressure increase between the gas, make gas compressed, make measured flow value accurate inadequately, so through setting up the second baffle, make the partial rivers of drainage chamber get into the catchment area through U capable pipe, the rivers that have reduced high liquid level are to measuring result's influence.

Further, the second partition plate consists of three parts including an upper partition plate, a movable plate and a lower partition plate; the upper partition board is fixed on the inner side wall of the shell in the horizontal direction, a plurality of fourth through holes are formed in the upper partition board, the movable board is arranged between the upper partition board and the lower partition board, the upper surface and the lower surface of the movable board are respectively contacted with the upper partition board and the lower partition board, a fifth through hole is formed in the position, opposite to the fourth through holes, of the movable board, a rotating shaft is arranged on the movable board, the movable board and the rotating shaft are coaxially arranged with the shell, and two ends of the rotating shaft are respectively and rotatably connected to the upper partition board and the lower partition board; a strip-shaped sixth through hole is formed in the side wall of the shell and corresponds to the movable plate, a handle is arranged in the sixth through hole, one end of the handle is connected with the movable plate, and the other end of the handle extends out of the sixth through hole; the lower partition board is fixed on the inner side wall of the shell along the horizontal direction, and seventh through holes are formed in the positions, opposite to the fourth through holes, of the lower partition board; the upper partition plate and the lower partition plate divide the drainage chamber into a water collecting area positioned above the upper partition plate and a water storing area positioned between the lower partition plate and the first partition plate; when the fifth through hole, the fourth through hole and the seventh through hole are coaxially arranged, the water collecting area is communicated with the water storage area; when the fifth through hole is completely deviated from the fourth through hole and the seventh through hole, the water collection area and the water storage area are blocked.

The upper partition plate and the lower partition plate are arranged for dividing the drainage chamber; the movable plate can rotate around the rotating shaft by arranging the rotating shaft; through the arrangement of the handle, a user can rotate the movable plate through the handle; when the handle rotates to one side of the sixth through hole, the fifth through hole, the fourth through hole and the seventh through hole are coaxially arranged, the water collecting area is communicated with the water storage area, and water in the water collecting area can be discharged to the water storage area; when the handle rotates to the other side of the sixth through hole, the fifth through hole is completely deviated from the fourth through hole and the seventh through hole, so that the water collecting area and the water storage area are separated, and water can be prevented from flowing out of a gap between the handle and the water collecting area by enabling the movable plate to be in contact with the upper partition plate and the lower partition plate.

Furthermore, a dial for measuring the opening degree of the valve is arranged on the second valve.

The second valve is provided with the dial, so that the valve can be opened to a certain opening degree through the scale on the dial, and the flow of the gas can be controlled.

Further, the housing is disposed on the base.

Through setting up the base, can improve the stability of whole device, make the work that the device can be steady.

The utility model has the beneficial effects that:

the flow of gas is measured by a drainage method through arranging a gas storage chamber, a drainage chamber and a drainage pipe; by arranging the second valve and the dial, the flow of the gas can be controlled through the second valve; the Y-shaped pipe is arranged, so that an external gas source, a shell internal gas measuring and using device can be mutually communicated through the Y-shaped pipe and a related pipeline, when the flow is measured, the third valve is closed, the second valve and the first valve are opened, the external gas source is communicated with the shell internal, the gas using device is blocked with the external gas source and the shell internal, then the flow of the gas is measured, when the gas flow value reaches a preset value, the first valve is closed, the third valve and the second valve are opened, the external gas source is communicated with the gas using device, and the gas using device is supplied with the gas with the corresponding flow, so that the function of using the gas immediately after measuring is achieved; therefore, the device not only has the advantage of accurate measurement by a drainage method, but also overcomes the defect that the drainage method cannot simultaneously have the measurement and control of gas flow and can be used immediately after measurement.

Drawings

Fig. 1 shows an overall structure of the present invention.

Fig. 2 shows a schematic of the structure of the Y-tube.

Fig. 3 shows a schematic view of the structure of the second separator.

Parts, elements and numbering in the figures: the device comprises a shell 1, a Y-shaped pipe 2, a water inlet and outlet 3, a U-shaped pipe 4, a water storage area 5, a water collection area 6, an air storage chamber 7, a second partition plate 8, an upper partition plate 81, a movable plate 82, a handle 83, a first valve 9, a second valve 10, a dial 11, a third valve 12, a first partition plate 13 and a water outlet pipe 14.

Detailed Description

The following description of the embodiments of the present invention will be given in conjunction with the accompanying drawings for a clear and complete description of the embodiments of the present invention, and it is obvious that the described embodiments are only the best embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 and fig. 2, a gas flow measuring and controlling device for a laboratory comprises a casing 1, wherein the casing 1 is arranged on a base, a water inlet and outlet 3 is arranged at the top of the casing 1, a rubber plug capable of covering the water inlet and outlet 3 is arranged in the water inlet and outlet 3, a first partition plate 13 is fixed in the casing 1, and the casing 1 is divided into an upper part and a lower part by the first partition plate 13 and comprises a gas storage chamber 7 positioned below the first partition plate 13 and a water drainage chamber positioned above the first partition plate 13; the side wall of the shell is positioned at the part of the air storage chamber 7, and the outer side wall of the shell is provided with scale marks for measuring the volume of water to be drained along the vertical direction; a first through hole is formed in the first partition plate 13, a drain pipe 14 is fixed in the first through hole, the upper end of the drain pipe 14 is communicated with a drain chamber, the lower end of the drain pipe 14 extends to one side close to the bottom plate of the shell 1, a first valve 9 is arranged on the drain pipe 14, a second through hole is formed in the side wall of the shell 1 corresponding to the first valve 9, an operating handle of the first valve 9 extends out of the shell 1 through the second through hole, and the first valve 9 is in sealing connection with the second through hole; be equipped with the third through-hole on the 1 lateral wall of casing, the third through-hole is located the below of first baffle 13 and is close to in first baffle 13, be equipped with Y type pipe 2 in the third through-hole, the first port of Y type pipe 2 can with the pipeline switch-on of outside air supply, be equipped with second valve 10 on the pipeline of outside air supply, be equipped with the calibrated scale 11 that is used for measuring the valve aperture on the second valve 10, the second port of Y type pipe 2 can with the pipeline switch-on of gas device, be equipped with third valve 12 on the pipeline of gas device, the third port of Y type pipe 2 is fixed at the third through-hole.

As shown in fig. 1, one end of the first partition plate 13, which is far away from the water discharge pipe 14, is bent upwards to form an L shape, the bent portion of the first partition plate 13 and the side wall of the housing 1 together enclose an air intake region of the air storage chamber 7, and a third through hole provided with the Y-shaped pipe 2 is opened on the side wall of the housing 1 at the air intake region.

As shown in fig. 1, the drainage chamber is provided with a second partition plate 8, which divides the drainage chamber into an upper part and a lower part and comprises a water collecting area 6 positioned above the second partition plate 8 and a water storing area 5 positioned between the second partition plate 8 and a first partition plate 13; the outer side wall of the shell 1 is provided with a U-shaped pipe 4 which enables the water storage area 5 and the water collection area 6 to be communicated, one pipe opening of the U-shaped pipe 4 is arranged on the side wall of the shell 1 and is positioned on the part of the water storage area 5, and the other pipe opening of the U-shaped pipe 4 is arranged on the side wall of the shell 1 and is positioned on the part of the water collection area 6.

As shown in fig. 3, the second partition 8 is composed of three parts including an upper partition 81, a movable plate 82 and a lower partition; the upper partition plate 81 is fixed on the inner side wall of the shell 1 along the horizontal direction, a plurality of fourth through holes are formed in the upper partition plate 81, the movable plate 82 is arranged between the upper partition plate 81 and the lower partition plate, the upper surface and the lower surface of the movable plate 82 are respectively contacted with the upper partition plate 81 and the lower partition plate, a fifth through hole is formed in the positions, opposite to the fourth through holes, of the movable plate, a rotating shaft is arranged on the movable plate 82, the movable plate 82 and the rotating shaft are coaxially arranged with the shell 1, and two ends of the rotating shaft are respectively and rotatably connected to the upper partition plate 81 and the lower partition plate; a strip-shaped sixth through hole is formed in the side wall of the shell 1 and corresponds to the movable plate 82, a handle 83 is arranged in the sixth through hole, one end of the handle 83 is connected with the movable plate, and the other end of the handle 83 extends out of the sixth through hole; the lower partition board is fixed on the inner side wall of the shell 1 along the horizontal direction, and seventh through holes are formed in the positions, opposite to the fourth through holes, of the lower partition board; the upper partition plate and the lower partition plate divide the drainage chamber into a water collecting area 6 positioned above the upper partition plate and a water storing area 5 positioned between the lower partition plate and the first partition plate 13; when the fifth through hole, the fourth through hole and the seventh through hole are coaxially arranged, the water collecting area 6 is communicated with the water storage area 5; when the fifth through hole is completely deviated from the fourth through hole and the seventh through hole, the water collection area 6 is blocked from the water storage area 5.

The working principle is as follows:

when measuring the gas flow, firstly, the first port of the Y-shaped pipe 2 is communicated with the pipeline of an external gas source, the second port of the Y-shaped pipe 2 is communicated with the pipeline of a gas using device, then the rubber plug, the first valve 9 and the third valve 12 are opened, the movable plate 82 is rotated by the handle 83, the water collecting area 6 is communicated with the water storage area 5, water which is not higher than the third port of the Y-shaped pipe 2 is filled into the shell 1, the water flow sequentially enters the water collecting area 6, the second clapboard 8, the water storage area 5, the water drain pipe 14 and the gas storage chamber 7, the scale of the liquid level is read after the water filling is finished and is used as an initial reading, then the movable plate 82 is rotated by the handle 83, the water collecting area 6 is blocked from the water storage area 5, the third valve 12 is closed, the second valve 10 is fully opened, the opening degree of the second valve is read by the external dial 11, the external gas source is communicated with the interior of the shell, the external gas using device is blocked from the external gas source and the interior of the shell, the gas which is insoluble in water enters the gas inlet area through the Y-shaped pipe 2, and because the gas is insoluble in water, the pressure of the gas storage chamber can be increased after the continuous gas enters the gas storage chamber 7, so that the water in the gas storage chamber enters the water storage area 5 which is positioned above the gas storage chamber 7 through the water discharge pipe 14, when the water storage area 5 is filled, the water flow can enter the water collection area 6 through the U-shaped pipe, and the gas with the same volume discharges the water with the same volume.

After a period of time, closing the second valve 10, keeping the lower end of the drain pipe 14 below the liquid level, obtaining the difference value between the reading indicated by the liquid level and the reading of the initial liquid level, namely the volume of the gas entering the gas storage chamber 7 in the corresponding time, dividing the difference value by the time to obtain the value which is the flow rate value of the gas under the corresponding valve opening degree, if the flow rate value does not reach the preset value, opening the third valve 12, simultaneously rotating the movable plate 82 through the handle 83 to communicate the water collection region 6 with the water storage region 5, enabling the water flowing out of the gas storage chamber 7 to flow back to the gas storage chamber 7, reading the scale of the water flow at the moment to be used as the initial reading, then closing the third valve 12, referring to the difference between the flow rate value of the gas and the preset value when the second valve 10 is fully opened, then opening the second valve 10 at a certain opening degree, and then repeating the above operations to obtain the corresponding flow rate value, until the flow rate of the gas reaches a preset value, the first valve 9 is closed when the flow rate reaches the preset value, the third valve 12 is opened, the second valve 10 is opened according to the measured opening degree, the external gas source is communicated with the gas using device, and the gas enters the gas using device through the second valve 10 according to the corresponding flow rate value.

Claims (6)

1. The gas flow measurement and control device for the laboratory is characterized by comprising a shell (1), wherein a water inlet and outlet (3) is formed in the top of the shell (1), a rubber plug capable of covering the water inlet and outlet (3) is arranged in the water inlet and outlet (3), a first partition plate (13) is fixed in the shell (1), and the shell (1) is divided into an upper part and a lower part by the first partition plate (13) and comprises a gas storage chamber (7) positioned below the first partition plate (13) and a water drainage chamber positioned above the first partition plate (13);

the side wall of the shell is positioned at the part of the air storage chamber (7), and scale marks for measuring the volume of water to be drained are arranged on the outer side wall of the shell along the vertical direction; a first through hole is formed in the first partition plate (13), a drain pipe (14) is fixed in the first through hole, the upper end of the drain pipe (14) is communicated with a drain chamber, the lower end of the drain pipe (14) extends to one side close to a bottom plate of the shell (1), a first valve (9) is arranged on the drain pipe (14), a second through hole is formed in the side wall of the shell (1) corresponding to the first valve (9), an operating handle of the first valve (9) extends out of the shell (1) through the second through hole, and the first valve (9) is connected with the second through hole in a sealing mode;

be equipped with the third through-hole on casing (1) lateral wall, the third through-hole is located the below of first baffle (13) and is close to in first baffle (13), be equipped with Y type pipe (2) in the third through-hole, the first port of Y type pipe (2) can with the pipeline switch-on of outside air supply, be equipped with second valve (10) on the pipeline of outside air supply, the second port of Y type pipe (2) can with the pipeline switch-on of gas device, be equipped with third valve (12) on the pipeline of gas device, the third port of Y type pipe (2) is fixed at the third through-hole.

2. A laboratory gas flow measurement and control device according to claim 1, characterized in that the end of the first partition plate (13) away from the water discharge pipe (14) is bent upwards to form an L-shape, the bent portion of the first partition plate (13) and the side wall of the housing (1) together enclose an air inlet area of the air storage chamber (7), and a third through hole for the Y-shaped pipe (2) is provided on the side wall of the housing (1) at the air inlet area.

3. A laboratory gas flow measurement and control device according to claim 2, characterized in that a second partition (8) is provided in the drainage chamber, dividing the drainage chamber into an upper part and a lower part, comprising a water collection area (6) above the second partition (8) and a water storage area (5) between the second partition (8) and the first partition (13);

be equipped with on the lateral wall of casing (1) and make U type pipe (4) of storing water district (5) and catchment district (6) intercommunication, on the part that is in storing water district (5) on casing (1) lateral wall was set up to a mouth of pipe of U type pipe (4), on another mouth of pipe setting of U type pipe (4) is in catchment district (6) on casing (1) lateral wall part.

4. A laboratory gas flow measurement and control device according to claim 3, characterized in that the second partition (8) consists of three parts comprising an upper partition (81), a movable plate (82) and a lower partition;

the upper partition plate (81) is fixed on the inner side wall of the shell (1) along the horizontal direction, a plurality of fourth through holes are formed in the upper partition plate (81), the movable plate (82) is arranged between the upper partition plate (81) and the lower partition plate, the upper surface and the lower surface of the movable plate (82) are respectively contacted with the upper partition plate (81) and the lower partition plate, a fifth through hole is formed in the position, opposite to the fourth through holes, of the movable plate, a rotating shaft is arranged on the movable plate (82), the movable plate (82) and the rotating shaft are coaxially arranged with the shell (1), and two ends of the rotating shaft are respectively and rotatably connected to the upper partition plate (81) and the lower partition plate;

a sixth through hole which is long-strip-shaped is formed in the side wall of the shell (1) and corresponds to the movable plate (82), a handle (83) is arranged in the sixth through hole, one end of the handle (83) is connected with the movable plate, and the other end of the handle (83) extends out of the sixth through hole;

the lower partition board is fixed on the inner side wall of the shell (1) along the horizontal direction, and seventh through holes are formed in the positions, opposite to the fourth through holes, of the lower partition board;

the upper partition plate and the lower partition plate divide the drainage chamber into a water collecting area (6) positioned above the upper partition plate and a water storage area (5) positioned between the lower partition plate and the first partition plate (13);

when the fifth through hole, the fourth through hole and the seventh through hole are coaxially arranged, the water collecting area (6) is communicated with the water storage area (5);

when the fifth through hole is completely deviated from the fourth through hole and the seventh through hole, the water collecting area (6) and the water storage area (5) are blocked.

5. A laboratory gas flow measurement and control device according to claim 4, characterized in that the second valve (10) is provided with a dial (11) for measuring the valve opening.

6. A laboratory gas flow measurement and control device according to claim 5, characterized in that the housing (1) is arranged on a base.

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