CN215639638U - Measuring device for measuring gas volume - Google Patents

Abstract

The utility model provides a measuring device for measuring gas volume, which comprises a cylinder body, a sealing cover arranged at one end of the cylinder body, an air inlet pipe penetrating through the sealing cover and protruding into the cylinder body, and a valve for controlling the opening and closing of the air inlet pipe, wherein a liquid discharge hole penetrating through the side wall of the cylinder body is formed at one end of the cylinder body, which is far away from the sealing cover. Through above-mentioned structure, make the barrel can directly erect the bottom in the liquid tank at the in-process of drainage, the open end of barrel is direct and the diapire contact in liquid tank, and when filling gas in the barrel, the water in the barrel passes through the outage and discharges, and whole drainage process of ventilating is in upright state, does benefit to the condition of monitoring liquid level in the barrel, reduces the test error, and in addition, whole test procedure barrel does not need artificial rightting, reduces the personnel configuration in the test procedure.

Description

Measuring device for measuring gas volume

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to a measuring device for measuring the volume of redundant Freon gas.

Background

When the volume of the gas is measured, a water discharge method or a gas flow meter method is usually adopted, wherein the gas flow meter method can obtain the volume of the gas passing through the gas flow meter method in a period of time by monitoring the gas flow and recording the gas flow meter method for the period of time.

At present, when charging freon gas into a compressor, a little more gas than a rated value is charged, then the excessive gas is discharged, and when measuring the volume of the discharged excessive gas, the general practice is to use a drainage method to measure, as shown in fig. 1, a measuring cylinder 11 ' filled with water is placed upside down in a water tank 20 ' filled with water, the measuring cylinder is suspended vertically in the water, an exhaust pipe 13 ' is inserted into the measuring cylinder 11 ' from below, an operator holds the measuring cylinder by hand and ensures that the outlet of the exhaust pipe 13 ' is always inside the measuring cylinder 11 ', the operator operates an exhaust valve 14 ', the gas slowly flows into the measuring cylinder 11 ' through the exhaust pipe 13 ', the gas discharges the water in the measuring cylinder 11 ', the volume of the gas flowing into the measuring cylinder 11 ' is equal to the volume of the discharged water, and when the water level in the measuring cylinder 11 ' falls to a target value, the exhaust valve 14 ' is closed, and the test is finished.

This process needs the cooperation operation of two people, and whether the measuring cylinder is vertical, the reading is accurate during the reading, leads to the human factor to influence very much, consequently, the drainage method test that uses at present discharges the method of freon gas volume not only the operation process is complicated but also the error is great.

SUMMERY OF THE UTILITY MODEL

The present invention solves one of the above problems by providing an apparatus for automatically measuring the volume of discharged freon gas.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the utility model provides a measuring device for be used for measuring gas volume, wherein, includes a barrel, locates the sealed lid of barrel one end, runs through sealed lid and the inside intake pipe of protruding income barrel, the valve that is used for controlling the intake pipe switch, the one end that sealed lid was kept away from to the barrel is equipped with the outage that runs through the barrel lateral wall.

Further, the liquid discharge holes are arranged on the side wall of the barrel at intervals along the circumferential direction of the side wall of the barrel.

Furthermore, the liquid discharge holes are at least provided with one row along the length direction of the cylinder body.

Further, the size of the liquid discharge hole along the length direction of the cylinder body is not more than one fourth of the length of the cylinder body.

Furthermore, sealed lid is equipped with the first mounting hole that runs through the barrel inside and outside, the intake pipe pass first mounting hole and with sealed lid between be interference fit, the valve is close to sealed lid sets up.

Further, the valve is an electromagnetic valve, the measuring device further comprises a control unit for controlling the electromagnetic valve to be opened and closed, and the control unit is in communication connection with the electromagnetic valve.

The liquid level sensor further comprises a sensing unit used for sensing the position of the liquid level in the cylinder, and the sensing unit is adjacent to the control unit and is in communication connection with the control unit; the sealed lid is equipped with the second mounting hole with induction element interference fit, induction element passes second mounting hole and induction element's probe stretches into in the barrel.

Further, the sensing unit is an ultrasonic water level sensor.

The liquid discharging device further comprises a fixing unit which is arranged on the side wall of the barrel and used for vertically fixing the barrel, and the fixing unit is arranged close to the liquid discharging hole.

Further, the fixed unit is a support matched with the side wall of the barrel, and the bottom end of the support is flush with one end, close to the liquid discharge hole, of the barrel.

Compared with the prior art, the utility model has the beneficial effects that: according to the measuring device for measuring the gas volume, the sealing cover with the gas inlet pipe and the valve is arranged at one end of the cylinder, the liquid discharge hole is formed in the side wall of the other end, away from the gas inlet pipe, of the cylinder, the cylinder can be directly erected at the bottom of the liquid tank in the water discharging process through the arrangement, the opening end of the cylinder is directly contacted with the bottom wall of the liquid tank, when gas is filled into the cylinder, water in the cylinder is discharged through the liquid discharge hole, the whole ventilation and drainage process is in an upright state, the liquid level condition in the cylinder is favorably monitored, the test error is reduced, the cylinder does not need to be manually centered in the whole test process, and the personnel allocation in the test process is reduced.

Drawings

Fig. 1 is a prior art measurement device for measuring gas volume.

Fig. 2 is a schematic structural view of a measuring apparatus in one embodiment of the measuring apparatus for measuring a gas volume according to the present invention.

Fig. 3 is a schematic structural view of a measuring apparatus in another embodiment of the measuring apparatus for measuring a gas volume according to the present invention.

Wherein, 11 '-measuring cylinder, 13' -exhaust pipe, 14 '-exhaust valve and 20' -water tank;

10-measuring device, 11-cylinder, 111-bottom wall, 12-sealing cover, 13-air inlet pipe, 14-valve, 141-electromagnetic valve, 15-liquid outlet hole, 16-control unit, 17-induction unit, 171-probe, 18-fixing unit, 181-bracket, 20-liquid tank and 21-liquid.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is to be understood that the terms "upper", "lower", and the like, are used for indicating orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used for simplifying the description of the present invention, but do not indicate or imply that the indicated devices must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention. Specifically, in the present invention, the direction toward the ground is downward, and conversely, the direction away from the ground is upward, and the descriptions of other expressions of orientation are defined with reference to "up" and "down".

In the various drawings of the present invention, some dimensions of structures or portions may be exaggerated relative to other structures for convenience of illustration, and thus, are used only to illustrate the basic structure of the present subject matter.

The measuring device 10 for measuring the volume of gas according to the present invention, as shown in fig. 2 to 3, mainly adopts the principle of measuring the volume of gas by using the liquid discharge method, when the measuring device measures the volume of gas, it is necessary to complete the measurement process by using the liquid tank 20 opened upward, and the liquid tank 20 contains liquid, generally, the liquid in the measuring device 10 and the liquid tank 20 are the same liquid, and the present invention is explained in detail by taking water as an example.

Specifically, the measuring device 10 includes a cylinder 11, a sealing cover 12 disposed at one end of the cylinder 11, an air inlet pipe 13 penetrating the sealing cover 12 and protruding into the cylinder 11, and a valve 14 for controlling the opening and closing of the air inlet pipe 13, wherein a liquid discharge hole 15 penetrating the side wall of the cylinder 11 is disposed at one end of the cylinder 11 away from the sealing cover 12.

In the testing process of the measuring device 10, the cylinder 11 is filled with water and vertically inverted in the liquid tank 20 filled with water, the sealing cover 12 is arranged at one end of the cylinder 11, which is far away from the liquid tank 20, the liquid discharge hole 15 at the lower part of the cylinder 11 is positioned below the liquid level of the liquid tank 20, the water level in the liquid tank 20 is lower than the upper part of the cylinder 11, the air inlet pipe 13 fills air into the cylinder 11 from the upper part of the cylinder 11 through the sealing cover 12, the open end at the lower part of the cylinder 11 is directly contacted with the bottom wall of the liquid tank 20, when the cylinder 11 is filled with gas, the water in the cylinder 11 is discharged into the liquid tank 20 through the liquid discharge hole 15, the whole cylinder 11 is vertically and stably positioned in the liquid tank 20 in the test process, the liquid level condition in the cylinder 11 is favorably monitored, the test error is reduced, moreover, the whole testing process does not need to be manually centered on the cylinder body 11, and personnel allocation in the testing process is reduced.

Further, the length of the cylinder 11 is greater than the inner diameter thereof, so that water in the cylinder 11 is easily discharged. Preferably, the inner diameter of the cylinder 11 is equal along the length direction of the cylinder 11, so that the volume inside the cylinder 11 can be represented by the height of the water level inside the cylinder 11. The shape of the cylinder 11 is not limited to a cylinder, and it is within the scope of the present embodiment that the inner diameter of the cylinder 11 is uniform along the length direction of the cylinder 11.

In a preferred embodiment of the present invention, the sidewall of the cylinder 11 is provided with a scale representing the internal volume of the cylinder, and the scale is uniformly spaced from the upper end of the cylinder 11 along the length direction of the cylinder 11, that is, the cylinder 11 is a measuring cylinder, the upper end of the measuring cylinder is provided with a bottom wall 111, and the bottom wall 111 is provided with an insertion hole (not shown) for the air inlet pipe 13 to penetrate through the cylinder 11.

As a preferred embodiment of the present invention, the sealing cover 12 is located at the upper portion of the cylinder 11, the shape of the sealing cover 12 is consistent with the horizontal cross-sectional shape of the cylinder 11, and the sealing cover 12 is in interference fit with the inner wall of the cylinder 11 to ensure the sealing performance of the cylinder 11.

When the cylinder 11 is placed in the liquid tank 20, the upper end and the lower end of the cylinder 11 are respectively sealed by the sealing cover 12 and the liquid level of the liquid in the liquid tank 20, so that the cylinder 11 becomes a sealing body, when the cylinder 11 is filled with gas, the gas is favorable for discharging the water in the cylinder 11, meanwhile, the gas in the sealed cylinder 11 cannot leak, and the measured volume of the gas is relatively accurate.

It should be understood that the sealing cover 12 may be disposed at the upper end of the cylinder 11, or may be located below the upper end of the cylinder 11, so long as the sealing cover 12 is located above the liquid level in the liquid tank 20, the purpose of sealing the cylinder 11 can be achieved.

When the cylinder body 11 is a measuring cylinder, the sealing cover 12 is embedded in the embedding hole in an interference manner to play a role in sealing the cylinder body 11. Preferably, the sealing cover 12 is provided in a cylindrical shape which is gradually narrowed from the top to the bottom so that the sealing cover 12 can be stably inserted into the insertion hole.

Preferably, the sealing cover 12 is made of an elastic material, so that the sealing cover 12 and the cylinder 11 are abutted against each other to increase the sealing performance of the cylinder 11.

Further, the sealing cover 12 is provided with a first mounting hole (not shown) penetrating through the inside and outside of the cylinder 11, and the first mounting hole is used for mounting and fixing the air inlet pipe 13.

Further, the air inlet pipe 13 is used for conveying air, wherein one end of the air inlet pipe 13 is connected with an air source, and the other end of the air inlet pipe 13 enters the cylinder 11 through the sealing cover 12. Specifically, the air inlet pipe 13 protrudes into the cylinder 11 through the first mounting hole, and is in interference fit with the sealing cover 12, so as to seal the sealing cover 12.

Further, the valve 14 is a switch disposed on the air inlet pipe 13 to control the air circulation in the air inlet pipe 13, in this embodiment, the valve 14 is disposed near the sealing cover 12. Preferably, the valve 14 is a solenoid valve 141, and the solenoid valve 141 is engaged with the air inlet pipe 13 and then lapped on the surface of the sealing cover 12.

In a preferred embodiment of the present invention, the drain holes 15 are formed in the side wall of the cylindrical body 11 at intervals in the circumferential direction of the side wall of the cylindrical body 11.

Further, the liquid discharge holes 15 are arranged in at least one row along the length direction of the cylinder 11. In this embodiment, the liquid discharge holes 15 are arranged in two rows at intervals up and down to smoothly and quickly discharge liquid.

Further, the size of the liquid discharge hole 15 along the length direction of the cylinder 11 is not more than one fourth of the length of the cylinder 11 to ensure that the cylinder 11 has enough volume to contain gas.

It is understood that the shape of the liquid discharge hole 15 includes, but is not limited to, circular hole, ellipse, triangle, rectangle, etc., and the size of the inner diameter of the liquid discharge hole 15 is not particularly limited, and the object of the present invention can be achieved as long as the liquid in the cylinder 11 can be rapidly discharged, and the present invention is within the protection scope of the present invention.

As a preferred embodiment of the present invention, the measuring device 10 further includes a control unit 16 for controlling the opening and closing of the electromagnetic valve 141, and the control unit 16 is connected in communication with the electromagnetic valve 141. The control unit 16 is located above the solenoid valve 141, and is not only used for automatically controlling the opening and closing of the solenoid valve 141, but also receiving and transmitting instructions or signals in the whole gas volume measurement process.

As a preferred embodiment of the present invention, the measuring device 10 further includes a sensing unit 17 for sensing a position of the liquid level in the cylinder 11, the sealing cover 12 is provided with a second mounting hole (not shown) matching with the sensing unit 17, and the second mounting hole and the first mounting hole are adjacently disposed, so that the components of the measuring device are disposed close to each other, and the use of connecting wires can be reduced, so that the appearance of the whole measuring device 10 is relatively neat.

The sensing unit 17 passes through the second mounting hole and is in interference fit with the sealing cover 12, that is, the side surface of the sensing unit 17 is abutted against the inner wall of the second mounting hole to ensure the sealing effect of the sensing unit 17 on the sealing cover 12.

The sensing unit 17 has a probe 171 for sensing the liquid level position, and the probe 171 protrudes into the cylinder 11 to increase the accuracy of sensing the liquid level position.

Further, the sensing unit 17 is adjacent to the control unit 16 and is in communication connection with the control unit 16; the sensing unit 17 receives the parameter signal transmitted by the control unit 16, and accordingly, the sensing unit 17 also transmits the information of the liquid level to the control unit 16 so that the control unit 16 can make an instruction.

In this embodiment, the sensing unit 17 is an ultrasonic water level sensor, the position of the liquid level detected by the ultrasonic water level sensor is relatively accurate, the volume of the sensing unit is relatively small, and the sensing unit is arranged on the sealing cover and is easy to operate.

As a preferred embodiment of the present invention, the measuring device 10 further comprises a fixing unit 18 provided on the sidewall of the cylinder 11 for vertically fixing the cylinder 11, and the fixing unit 18 fixes the whole measuring device 10 on the bottom wall in the liquid tank 20 during the test.

In the case of a small gas volume, as the gas in the cylinder 11 increases, the water in the cylinder 11 gradually decreases, and until the end of the measurement process, the cylinder 11 can still be vertically arranged in the liquid tank 20.

Under the condition that the gas volume is large, as the gas in the cylinder 11 increases, the mass of the water remaining in the cylinder 11 is too small to maintain the vertical state of the cylinder 11, and therefore, the fixing unit 18 is required to fix the cylinder 11 on the bottom wall of the liquid tank 20, so that the position of the cylinder 11 does not deviate in the measuring process, the cylinder 11 is always in the vertical state, the liquid level in the cylinder 11 is ensured to be horizontal, and the accuracy of the measured data is improved.

In this embodiment, the fixing unit 18 is disposed near the liquid discharge hole 15, that is, the fixing unit 18 is disposed at the lower end of the cylinder 11. Specifically, the fixing unit 18 is a bracket 181 fitted to the side wall of the barrel 11, and the bottom end of the bracket 181 is flush with the end of the barrel 11 close to the liquid discharge hole 15, so that the bottom end of the barrel 11 is in contact with the bottom wall of the liquid tank 20, that is, the liquid in the liquid tank 20 does not need to be too much to seal the lower part of the barrel 11.

It is understood that the fixing unit 18 may be a suction cup, a snap or other structure disposed at the end of the side wall of the cylinder 11, and it is within the scope of the present invention to fix the cylinder 11 and locate the bottom end of the cylinder 11 at the bottom wall of the liquid tank 20.

The working process of the preferred embodiment of the measuring device 10 of the present invention is: the cylinder body 11 is filled with water, the cylinder body is vertically inverted in a liquid tank 20 filled with water, the water level in the liquid tank 20 is higher than the position of the liquid discharge hole 15, the cylinder body 11 is fixed in the liquid tank 20 by using a fixing unit 18, the whole process ensures that the cylinder body 11 is filled with water all the time, the volume quantity of gas to be discharged is input into a control unit 16, the control unit 16 transmits information to a sensing unit 17 and controls an electromagnetic valve 141 to open an air inlet pipe 13, when the sensing unit 17 detects that the liquid level in the cylinder body 11 reaches a specified position, a signal is transmitted to the control unit 16, the control unit 16 controls the electromagnetic valve 141 to close the air inlet pipe 13, and the measurement process is completed.

In summary, according to the measuring device 10 for measuring the volume of the gas, provided by the utility model, the liquid discharge hole 15 is formed in the side wall of one end of the cylinder 11, which is far away from the air inlet pipe 13, so that the cylinder 11 can be directly erected at the bottom of the liquid tank 20 in the drainage process, the open end of the cylinder 11 is directly contacted with the bottom wall of the liquid tank 20, the cylinder 11 is in an upright state in the whole inflation and drainage process, the monitoring of the liquid level in the cylinder 11 is facilitated, the test error is reduced, and the manual righting of the cylinder 11 is not needed in the whole test process, so that the personnel configuration in the test process is reduced.

It should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The above detailed description is merely illustrative of possible embodiments of the present invention and is not intended to limit the scope of the utility model, which is intended to include all equivalent embodiments or modifications within the scope of the present invention without departing from the technical spirit of the present invention.

Claims (10)

1. A measuring device for measuring a volume of gas, characterized by: the automatic air inlet pipe valve comprises a barrel body, a sealing cover arranged at one end of the barrel body, an air inlet pipe penetrating through the sealing cover and protruding into the barrel body, and a valve used for controlling the opening and closing of the air inlet pipe, wherein a liquid discharge hole penetrating through the side wall of the barrel body is formed in one end, far away from the sealing cover, of the barrel body.

2. A measuring device for measuring a volume of gas as in claim 1, wherein: the liquid discharge holes are arranged on the side wall of the barrel at intervals along the circumferential direction of the side wall of the barrel.

3. A measuring device for measuring a volume of gas as defined in claim 2, wherein: the liquid discharge holes are at least arranged in one row along the length direction of the cylinder body.

4. A measuring device for measuring a volume of gas as defined in claim 2, wherein: the size of the liquid discharge hole along the length direction of the cylinder body is not more than one fourth of the length of the cylinder body.

5. A measuring device for measuring a volume of gas as in claim 1, wherein: the sealing cover is provided with a first mounting hole penetrating through the inside and the outside of the barrel, the air inlet pipe penetrates through the first mounting hole and is in interference fit with the sealing cover, and the valve is close to the sealing cover.

6. A measuring device for measuring a volume of gas as in claim 1, wherein: the valve is an electromagnetic valve, the measuring device further comprises a control unit for controlling the electromagnetic valve to be opened and closed, and the control unit is in communication connection with the electromagnetic valve.

7. A measuring device for measuring a volume of gas as in claim 6, wherein: the induction unit is adjacent to the control unit and is in communication connection with the control unit; the sealed lid is equipped with the second mounting hole with induction element interference fit, induction element passes second mounting hole and induction element's probe stretches into in the barrel.

8. A measuring device for measuring a volume of gas as defined in claim 7, wherein: the sensing unit is an ultrasonic water level sensor.

9. The measuring device for measuring a volume of gas as set forth in any one of claims 1 to 8, wherein: the liquid discharging device is characterized by further comprising a fixing unit arranged on the side wall of the barrel and used for vertically fixing the barrel, and the fixing unit is arranged close to the liquid discharging hole.

10. A measuring device for measuring a volume of gas as defined in claim 9, wherein: the fixing unit is a support matched with the side wall of the barrel, and the bottom end of the support is flush with one end, close to the liquid discharge hole, of the barrel.

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