TWI718963B - Air bubble detection device for preventing air plugs in liquid pipe - Google Patents

Abstract

The invention provides a bubble detection device for preventing the formation of gas plugs in a liquid pipe, which comprises a gas conduit, a liquid pipe, a bubble filter and a pressurizing pipe. The liquid pipe is connected in series by a liquid supply pipe and a liquid discharge pipe. Formed, the gas conduit is inserted into the liquid supply pipe, the bubble filter has a bubble accommodating chamber, the liquid supply pipe is communicated with the drain pipe through the bubble accommodating chamber, and one end of the pressurizing pipe is connected to the Discharge pipe, the discharge pipe is provided with a bubble sensing element, wherein the bubble accommodating chamber screens the bubbles provided by the liquid supply pipe, so that an excessively large bubble is decomposed into an excess bubble and a monitoring bubble, and the excess bubble is discharged When the flow leaves the bubble containing chamber, the monitoring bubble is guided into the discharge pipe to be detected by the bubble sensing element, so as to improve the accuracy of detection when a small flow of gas leaks.

Description

Air bubble detection device to prevent air locks from being generated in liquid pipes

The present invention is applied to the field of leaking gas detection, and relates to preventing the leaking gas from generating a gas plug phenomenon in a liquid pipe, and further provides a bubble detection device for preventing the gas plug from being generated in the liquid pipe.

Generally, there are process gases in industrial equipment such as heat exchange, boilers, heat treatment, gas or exhaust gas treatment, etc. Most of the process gases have a specific pressure and are guided or guided by structural elements such as pipes or cabins. store.

Moreover, it is known that after a period of use of industrial equipment with process gas, process gas leakage is often prone to occur, which affects the proper rate of such industrial equipment. If the leaked process gas is toxic, it will pose a considerable threat to the environment, personnel health and even safety. Therefore, once the process gas in the industrial equipment leaks, it must be detected immediately in order to maintain the proper rate of the equipment, environmental sanitation and public safety.

It is known that in today's industrial equipment with process gas, gas pressure sensors, gas flow meters and other measuring components are installed in gas diversion pipes or gas storage tanks to detect whether the process gas has leaked. However, it is difficult for these prior art technologies to accurately detect gas leaks with small flow rates.

It is also known that the applicant has recently proposed a technology that introduces the leaked gas into the liquid pipe to generate bubbles, and then detects and detects the leaked gas by detecting the number or volume of bubbles generated in the liquid; however, this Technology When the flow of the leaked gas is too small, the thrust of the small flow of the leaked gas in the liquid pipe is also relatively small, which causes the bubbles generated by the small flow of the leaked gas to accumulate in the liquid pipe, thereby forming a gas lock Phenomenon, even hindering the advancement of bubbles, affecting the detection of small-flow leaking gas The accuracy of the measurement needs to be improved urgently.

The purpose of the present invention is to improve the accuracy of detection when the above-mentioned small flow gas leaks.

In order to achieve the above objective, a preferred embodiment of the present invention is to provide a bubble detection device that prevents the formation of gas plugs in the liquid pipe, so as to improve the accuracy of detection when a small flow of gas leaks. The technical means include: a gas pipe for guiding the leaking gas; a liquid pipe formed by connecting a liquid supply pipe and a liquid discharge pipe in series. One end of the gas pipe is inserted into the liquid supply pipe so that the liquid supply pipe is connected in series. Bubbles are generated in the tube; a bubble filter, in which a liquid pipe flow channel and a bubble containing chamber are formed inside the body, the liquid pipe flow channel is provided at both ends of the liquid pipe and the liquid discharge pipe to be connected in series; One end of the pressurizing tube is connected with the drain tube, and the other end is connected with a driver; wherein, the liquid tube flow path extends through the bubble containing chamber, and the drain tube is provided with a bubble sensing element, the bubble sensing The element is located between the body and the pressurizing pipe; the liquid supply pipe is communicated with the drain pipe through the bubble containing chamber, and an open notch is formed on one side end wall of the bubble containing chamber , The bubble accommodating chamber and the open slot jointly screen the bubble volume range of the bubble provided to the liquid tube, so that the oversized bubble larger than the bubble volume range is decomposed into an excess bubble and a monitoring bubble, and the excess bubble passes through The open slot drains away from the liquid pipe flow channel, and the monitoring air bubble is guided into the liquid drain pipe through the air bubble containing chamber to be detected by the air bubble sensing element.

In a further implementation, the two ends of the liquid pipe flow channel are respectively formed with a liquid supply pipe connection port and a liquid discharge pipe connection port which are parallel to each other, and the liquid supply pipe connection port and the discharge pipe connection port are accommodated by the air bubble. The chambers are communicated with each other, and there are different height differences between the liquid supply pipe connection port and the discharge pipe connection port.

In a further implementation, the height of the liquid supply pipe connecting port in the bubble containing chamber is relatively lower than the liquid discharge pipe connecting port.

In a further implementation, one end of the liquid feeding tube is implanted in the bubble containing chamber through the liquid feeding tube adapter port.

In a further implementation, the liquid supply pipe connector is made into a semi-circular pipe It is wall-shaped, and the opening area of the connecting port of the liquid feeding pipe is smaller than the opening notch.

In a further implementation, the liquid-supply pipe adapter port and the open notch are formed on the same side end wall of the body.

In a further implementation, the height of the liquid feeding pipe adapter in the bubble containing chamber is relatively lower than the open slot.

In a further implementation, the drainage pipe connector is made into a pipe hole shape.

In a further implementation, the pressurizing pipe and the drain pipe are communicated with each other via a three-way element.

In a further implementation, the three-way element has a first inlet for connecting the discharge pipe, a second inlet for connecting the pressurizing pipe, and an outlet for discharging the liquid. The first The included angle between the entrance and the second entrance is greater than 0 degrees and less than 180 degrees, and the included angles between the first entrance and the second entrance and the exit are greater than 90 degrees and less than or equal to 180 degrees.

In a further implementation, the pressurizing pipe is formed by extending from one side of the drain pipe.

In a further implementation, the bubble sensing element is an ultrasonic sensor.

In a further implementation, the bubble sensing element is a visual device equipped with a charge-coupled element.

According to the above technical means, the advantages of the present invention are: combining bubble screening and dynamic drainage technology to promote small flow of external gas to generate bubbles in the liquid pipe, so as not to accumulate and generate gas plugs due to the low pressure in the liquid pipe Therefore, the present invention is helpful for the advancement of bubbles in the liquid pipe, and also allows the larger volume of gas in the gas plug to be smoothly screened into monitoring bubbles of suitable volume when a gas plug is accidentally generated in the liquid pipe. It is helpful to improve the detection accuracy of small flow of leaked gas.

Please refer to the following embodiments and drawings for specific implementation details of the technical means of the above-mentioned methods and devices and their performance.

10: bubbles

11: Excessively large bubbles

12: Excess bubbles

13: Monitoring bubbles

20: Liquid

30: Bubble filter

31: Liquid pipe flow path

32: Bubble holding room

33: open notch

34: To the liquid pipe connection interface

35: Discharge pipe connection

40: Gas conduit

50: Liquid pipe

51: Liquid supply pipe

52: Drain pipe

60: pressurized tube

70: Liquid tank

80: bubble sensing element

90: Tee components

91: first entrance

92: second entrance

93: Exit

Figure 1 is a three-dimensional view of the bubble detection device for preventing the formation of air locks in the liquid pipe of the present invention intention.

Fig. 2 is a cross-sectional view of Fig. 1.

Figures 3 to 5 are respectively schematic diagrams of the operation of the bubble detection device for preventing air clogging in the liquid pipe of the present invention.

First of all, please refer to FIGS. 1 and 2 together to disclose the aspect of a preferred embodiment of the present invention, and explain the bubble detection device provided by the present invention for preventing gas clogging in the liquid pipe, including a gas conduit 40, a liquid Tube 50, a bubble filter 30 and a pressurized tube 60. among them:

The gas conduit 40 is used to guide the leaking gas of industrial equipment. The industrial equipment may be heat exchange equipment with process gas, boilers, heat treatment equipment, gas equipment, or waste gas treatment equipment. According to common knowledge, in order to prevent process gas leakage, these industrial equipment usually install diversion leaking gas in the diversion pipeline that diverts the process gas or the pipeline interface of the gas storage tank, the hatch cover interface and other locations that are likely to leak gas. The gas conduit 40 prevents the process gas from leaking into the atmosphere.

The liquid tube 50 is filled with a liquid 20, and the liquid 20 may be water or other oil or solvent that does not affect the formation and floating of bubbles. In practice, the liquid pipe 50 is formed by connecting a liquid supply pipe 51 and a liquid discharge pipe 52 in series. One end of the gas pipe 40 is inserted into the liquid supply pipe 51, thereby enabling the gas pipe 40 to guide leakage. The gas generates bubbles 10 in the liquid 20 of the liquid pipe 50.

A liquid pipe flow passage 31 is formed inside the body of the bubble filter 30, and the two ends of the liquid pipe flow passage 31 respectively extend to the surface of the body of the bubble filter 30 to form a liquid supply pipe connection port 34 and a liquid supply pipe connection port 34 parallel to each other. The liquid-supply connecting port 35 is used for connecting the liquid-supply tube 51, the liquid-supply connecting port 35 is used for connecting the liquid-discharging tube 52, and the liquid-supply connecting port 34 is made in half in practice. A circular tube wall shape, and the discharge tube adapter 35 is made into a tube hole shape in implementation. Furthermore, there are different height differences between the liquid supply pipe connection port 34 and the discharge pipe connection port 35. In specific implementation, the height of the liquid supply pipe connection port 34 in the bubble containing chamber 32 is relatively low. At the drain pipe connection interface 35.

A bubble containing chamber 32 is formed in the body of the bubble filter 30, and the The liquid supply pipe connection port 34 and the discharge pipe connection port 35 are in communication with each other through the bubble containing chamber 32, so that the liquid supply pipe 51 is connected with the liquid discharge pipe 52 through the bubble containing chamber 32. The body of the bubble filter 30 is also formed with an open slot 33 communicating with the bubble accommodating chamber 32 on the end wall of the liquid supply pipe adapter 34. The open slot 33 is located in the bubble accommodating chamber 32. The height is relatively higher than the liquid supply pipe adapter 34, and the opening area of the liquid supply pipe adapter 34 is smaller than the open slot 33, so that the bubble 10 can pass through the open slot 33 after entering the bubble containing chamber 32 from the liquid supply pipe 51 Quickly leave the bubble accommodating chamber 32, and will not accumulate in the bubble accommodating chamber to form an air lock phenomenon. In addition, one end of the liquid supply tube 51 is implanted in the bubble containing chamber 32, so that the bubble 10 enters the bubble containing chamber and approaches the drain tube 52, so that part of the bubble 10 (that is, the monitoring bubble 13) enters the drain tube 52. in.

One end of the pressurizing pipe 60 is connected to the discharge pipe 52, and the other end is connected to a driver (not shown). The driver is used to drive the liquid 20 in the pressurizing pipe 60 to flow into the discharge pipe 52 to drive the discharge pipe 52. The liquid 20 flows, and the driver can be a liquid pump in implementation. Furthermore, the pressure pipe 60 and the discharge pipe 52 are connected through a three-way element 90 in practice, and the three-way element 90 has a first inlet 91, a second inlet 92, and an outlet that are connected to each other. 93, where the first inlet 91 is used to connect to the drain tube 52, the second inlet 92 is used to connect to the pressurizing tube 60, the outlet 93 is used to drain the liquid 20, and the first inlet 91 and the second inlet 92 are The included angle between the first inlet 91 and the second inlet 92 and the outlet 93 is greater than 0 degrees and less than 180 degrees, and the included angles between the first inlet 91 and the second inlet 92 and the outlet 93 are greater than 90 degrees and less than or equal to 180 degrees. When the liquid 20 in the pressure pipe 60 flows into When the liquid discharge pipe 52 is inside, the liquid 20 in the liquid discharge pipe 52 can be smoothly driven to flow to the outlet 93. In addition, the pressurizing tube 60 may be formed by extending from one side of the drain tube 52 in practice.

The discharge pipe 52 is provided with a bubble sensing element 80 which is located between the body of the bubble filter 30 and the pressurizing tube 60 to monitor the liquid 20 in the discharge pipe 52 Whether there are bubbles 10 passing through and the size and quantity of the bubbles 10. The bubble sensing element 80 can be an ultrasonic sensor or a visual device equipped with a charge coupled device (CCD). These bubble sensing elements 80 can be easily It is arranged on the drain tube 52 by assembling means such as locking, pasting or buckling. When the bubble sensing element 80 is an ultrasonic sensor, the discharge tube 52 can be transparent or opaque; the ultrasonic sensor can penetrate transparent or opaque discharge by virtue of the ultrasonic waves it generates The tube 52 is used to sense the bubbles 10 in the liquid 20 of the drain tube 52. In addition, when the bubble sensing element 80 is a visual device, the drain tube 52 must be transparent, so as to provide a visual device that can see through the bubble 10 in the liquid 20 of the drain tube 52 through the transparent drain tube 52.

According to the above configuration, please continue to refer to FIGS. 3 to 5 to disclose the operation explanatory diagrams of the present invention in sequence, illustrating that the liquid 20 in the pressurizing tube 60 flows into the drain tube 52 through the drive of the driver, and then drives the drain tube 52 The liquid 20 inside flows, and the liquid 20 in the liquid feeding pipe 51 follows the flow, so that the bubbles 10 in the liquid feeding pipe 51 are driven by the liquid 20 to flow from the liquid feeding pipe 51 to the bubble containing chamber 32 (as shown in FIG. 3) , Which includes the excessively large bubbles 11 formed by accumulation in the liquid feeding pipe 51, and the excessively large bubbles 11 means that the volume thereof is larger than the preset bubble volume range.

When the excessively large bubble 11 enters the bubble containing chamber 32 through the liquid supply pipe 51 (as shown in FIG. 4), the excessively large bubble 11 will float up, and during the upward process, the excessively large bubble 11 will decompose into excess bubbles 12 and monitoring The bubble 13, the bubble volume of the excess bubble 12 is larger than the monitoring bubble 13, the excess bubble 12 will drain out of the bubble containing chamber 32 through the open slot 33 due to its buoyancy and enter the liquid tank 70.

Since the bubble volume of the monitoring bubble 13 is smaller than that of the excess bubble 12, that is, the buoyancy of the monitoring bubble 13 is smaller than that of the excess bubble 12. When the liquid 20 in the discharge pipe 52 is driven by the pressurizing pipe 60 to flow, the discharge pipe 52 is in a negative pressure state, so that the monitoring bubble 13 with less buoyancy is sucked into the discharge pipe 52 (as shown in FIG. 5), so as to filter the bubble volume. When the monitoring bubble 13 passes through the bubble through the discharge pipe 52 When the sensing element 80 is used, the bubble sensing element 80 is used to monitor the size and quantity of the monitoring bubble 13.

The above examples only express the preferred embodiments of the present invention, but they should not be understood as a limitation to the scope of the present invention. Therefore, the present invention should be subject to the content of the claims defined in the scope of the patent application.

30: Bubble filter

33: open notch

34: To the liquid pipe connection interface

35: Discharge pipe connection

40: Gas conduit

50: Liquid pipe

51: Liquid supply pipe

52: Drain pipe

60: pressurized tube

80: bubble sensing element

90: Tee components

91: first entrance

92: second entrance

93: Exit

Claims (13)

A bubble detection device for preventing air locks from being generated in a liquid pipe, including: A gas conduit to guide the leaking gas; A liquid pipe is formed by connecting a liquid feeding pipe and a liquid draining pipe in series, and one end of the gas pipe is inserted into the liquid feeding pipe to generate bubbles in the liquid feeding pipe; A bubble filter, in which a liquid pipe flow channel and a bubble containing chamber are formed inside the body, and the liquid pipe flow channel is provided with the liquid supply pipe and the liquid discharge pipe connected in series at both ends of the liquid pipe flow channel; A pressurizing pipe, one end of which is connected to the drain pipe, and the other end is connected to a driver; Wherein, the liquid pipe flow path extends through the bubble containing chamber, and the drain pipe is provided with a bubble sensing element, and the bubble sensing element is located between the body of the bubble filter and the pressurizing tube; The liquid supply pipe is communicated with the discharge pipe through the bubble containing chamber, an open notch is formed on one side end wall of the bubble containing chamber, and the bubble containing chamber and the open notch jointly screen the The bubble volume range of the bubble provided to the liquid pipe causes the oversized bubble larger than the bubble volume range to decompose into an excess bubble and a monitoring bubble. The excess bubble drains out of the liquid pipe flow path through the open slot. The monitored air bubbles are guided into the drain pipe through the air bubble containing chamber to be detected by the air bubble sensing element. According to claim 1, the bubble detection device for preventing the formation of gas clogging in the liquid pipe, wherein the liquid pipe flow channel is respectively formed with a liquid supply pipe connection port and a liquid discharge pipe connection port parallel to each other at both ends of the liquid pipe flow channel. The pipe connection port and the discharge pipe connection port are communicated with each other through the bubble containing chamber, and the liquid supply pipe connection port and the discharge pipe connection port have different height differences. According to claim 2, the bubble detection device for preventing the formation of air locks in the liquid pipe, wherein the height of the liquid supply pipe connection port in the bubble containing chamber is relatively lower than the discharge pipe connection port. The air bubble detection device for preventing the formation of air locks in the liquid pipe according to claim 2, wherein One end of the liquid feeding tube is implanted in the bubble containing chamber through the liquid feeding tube adapter port. The air bubble detection device for preventing the formation of gas plugs in the liquid pipe according to claim 2, wherein the liquid supply pipe adapter port is made into a semicircular tube wall shape, and the opening area of the liquid supply pipe adapter port is smaller than the open notch . The bubble detection device for preventing the formation of air locks in the liquid pipe according to claim 2, wherein the liquid supply pipe connection port and the open notch are formed on the same side end wall of the body. According to claim 2, 5, or 6, the bubble detection device for preventing the formation of air locks in the liquid pipe, wherein the height of the liquid feeding pipe interface in the bubble accommodating chamber is relatively lower than the open slot. According to claim 2, the bubble detection device for preventing the formation of gas plugs in the liquid pipe, wherein the liquid discharge pipe connection port is made into a pipe hole shape. The air bubble detection device for preventing the formation of air locks in the liquid pipe according to claim 1, wherein the pressurizing pipe and the liquid discharge pipe are connected via a three-way element. According to claim 8, the bubble detection device for preventing the formation of air locks in the liquid pipe, wherein the three-way element has a first inlet for connecting the discharge pipe and a second connecting to the pressurizing pipe. An inlet and an outlet for discharging liquid, the angle between the first inlet and the second inlet is greater than 0 degrees and less than 180 degrees, the angle between the first inlet and the second inlet and the outlet is greater than 90 degrees and less than or equal to 180 degrees. The air bubble detection device for preventing the formation of air locks in the liquid pipe according to claim 1, wherein the pressurizing pipe is formed by extending one side of the liquid discharge pipe. The air bubble detection device for preventing air clogging in a liquid pipe according to claim 1, wherein the air bubble sensing element is an ultrasonic sensor. The bubble detection device for preventing the generation of air locks in the liquid pipe according to claim 1, wherein the bubble sensing element is a visual device equipped with a charge-coupled element.

Images