TW202146872A - Bubble detection device used for preventing air plugs from being generated in liquid pipes - Google Patents

Abstract

The utility model provides a bubble detection device used for preventing an air plug from being generated in a liquid pipe, which comprises a gas guide pipe, a liquid pipe, a bubble screening device and a pressurizing pipe, the liquid pipe is formed by connecting a liquid feeding pipe and a liquid discharging pipe in series, the gas guide pipe is inserted into the liquid feeding pipe, and the bubble screening device is provided with a bubble containing chamber. Wherein the liquid feeding pipe is communicated with the liquid discharging pipe through the bubble accommodating chamber, one end of the pressurizing pipe is communicated with the liquid discharging pipe, a bubble sensing element is arranged on the liquid discharging pipe, and the bubble accommodating chamber screens bubbles provided by the liquid feeding pipe, so that an excessive bubble is decomposed into an excessive bubble and a monitoring bubble; the redundant air bubbles are discharged out of the air bubble containing chamber, and the monitoring air bubbles are guided into the liquid discharging pipe to be detected by the air bubble sensing element, so that the detection accuracy when small-flow gas leaks out is improved.

Description

Air bubble detection device to prevent gas plugs from being generated in liquid pipes

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

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

In addition, it is known that after a period of use of industrial equipment with process gas, process gas leakage often occurs, which affects the availability of such industrial equipment. If the leaked process gas is toxic, it will pose a considerable threat to the persecution of the environment, the health and even the safety of personnel. Therefore, in the event of leakage of process gas in such industrial equipment, it must be detected immediately in order to maintain equipment availability, environmental hygiene and public safety.

It is known that in today's industrial equipment with process gas, measuring elements such as gas pressure sensors and gas flow meters are mostly installed in gas guide pipes or gas storage tanks to detect whether the process gas is leaking. However, it is difficult to accurately detect the leakage of gas with a small flow rate in these existing technologies.

It is known that the applicant has recently proposed a technology for introducing leaked gas into a liquid pipe to generate bubbles, and then detecting and detecting the leaked gas by detecting the number or volume of bubbles generated in the liquid; however, this Technology When the flow rate of the leaked gas is too small, the thrust of the leaked gas with a small flow rate in the liquid pipe is relatively small, so that the bubbles generated by the leaked gas with a small flow rate are easy to accumulate in the liquid pipe, thereby generating a gas plug. phenomenon, and even hinder the advancement of bubbles, affecting the detection of small flow leakage gas. The accuracy of the measurement needs to be improved urgently.

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

In order to achieve the above object, a preferred embodiment of the present invention is to provide a bubble detection device for preventing gas plugs from being generated in a liquid pipe, so as to improve the detection accuracy when a small flow of gas leaks out. The technical means include: a gas conduit for guiding leaking gas; a liquid conduit, which is formed by connecting a liquid supply conduit and a liquid discharge conduit in series; Air bubbles are generated in the pipe; a bubble screener, a liquid pipe flow channel and a bubble accommodating chamber are formed in the body of the body, and the liquid pipe flow channel is provided with the liquid supply pipe and the liquid discharge pipe at both ends to be connected in series with each other; a One end of the pressure pipe is connected to the liquid discharge pipe, and the other end is connected to a driver; wherein, the liquid pipe flow channel extends through the air bubble accommodating chamber, and a bubble sensing element is arranged on the liquid discharge pipe, and the air bubble sensing The element is located between the body and the pressurized pipe; the liquid supply pipe is communicated with the liquid discharge pipe through the air bubble accommodating chamber, and an open notch is formed on one side wall of the air bubble accommodating chamber , the bubble accommodating chamber and the open notch jointly screen the bubble volume range of the bubbles provided by the liquid pipe, so that an 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 out of the liquid pipe flow channel, and the monitoring air bubble is guided into the liquid drain pipe through the air bubble accommodating chamber to be detected by the air bubble sensing element.

In a further implementation, both 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 liquid drain pipe connection port are accommodated through the bubbles The chambers are communicated with each other, and there are different height differences between the connection port of the liquid supply pipe and the connection port of the liquid discharge pipe.

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

In a further implementation, one end of the liquid feeding pipe is inserted into the air bubble accommodating chamber through the connecting port of the liquid feeding pipe.

In a further implementation, the joint of the liquid feeding pipe is made of a semicircular pipe It is wall-shaped, and the opening area of the connecting port of the liquid supply pipe is smaller than that of the opening slot.

In a further implementation, the liquid feeding pipe connecting port and the open slot are formed on the same side end wall of the container body.

In a further implementation, the height of the connection port of the liquid supply pipe in the bubble accommodating chamber is relatively lower than the open slot.

In a further implementation, the drain pipe joint is formed in the shape of a pipe hole.

In a further implementation, the pressurizing pipe communicates with the drain pipe via a three-way element.

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

In a further implementation, the pressurized pipe system is formed by extending from one side of the discharge pipe.

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

In a further implementation, the bubble sensing element is a charge coupled element mounted vision device.

According to the above technical means, the advantages of the present invention are: combined with the bubble screening and dynamic drainage technology, the bubbles generated in the liquid pipe by the exhaust gas at a small flow rate are promoted, and the gas plugs are not accumulated due to the low pressure in the liquid pipe. Therefore, the present invention is helpful for the advancement of air bubbles in the liquid pipe, and can also allow the larger volume of gas in the air plug to be smoothly screened into monitoring bubbles of suitable volume when a gas plug is accidentally generated in the liquid pipe. It is beneficial to improve the detection accuracy of small flow leakage gas.

The technical means of the above-mentioned methods and apparatuses and the specific implementation details of their performances are described with reference to the following embodiments and drawings.

10: Bubbles

11: Excessive bubbles

12: Excess air bubbles

13: Monitor for bubbles

20: Liquid

30: Bubble Filter

31: Liquid pipe flow channel

32: Bubble accommodating chamber

33: Open Notch

34: Connection port for liquid feeding pipe

35: Drain pipe connector

40: Gas conduit

50: Liquid pipe

51: Feeding pipe

52: Drain pipe

60: Pressurized tube

70: Liquid tank

80: Bubble sensing element

90: Tee components

91: The first entrance

92: Second entrance

93: Export

FIG. 1 is a three-dimensional view of the bubble detection device for preventing the generation of gas plugs in the liquid pipe according to the present invention. intention.

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

FIG. 3 to FIG. 5 are respectively the schematic diagrams of the operation of the air bubble detection device for preventing the generation of air plugs in the liquid pipe according to the present invention.

First of all, please refer to FIG. 1 and FIG. 2 together, which discloses a preferred embodiment of the present invention, and describes the air bubble detection device for preventing the formation of gas plugs in the liquid pipe provided by the present invention, including a gas conduit 40, a liquid Tube 50 , a bubble filter 30 and a pressurized tube 60 . in:

The gas conduit 40 is used to guide the leakage gas of the industrial equipment, and the industrial equipment may be a heat exchange equipment, a boiler, a heat treatment equipment, a gas equipment or a waste gas treatment equipment, etc. with process gas. According to common knowledge, in order to prevent the leakage of process gas, these industrial equipments are usually equipped with diversion leakage gas in the diversion pipeline for diverting the process gas, the pipeline interface of the gas storage tank, the hatch cover interface and other places that are prone to gas leakage. The gas conduit 40 is provided to prevent the process gas from leaking into the atmosphere.

The liquid pipe 50 is filled with liquid 20, and the liquid 20 can be water or other oils or solvents that do not affect the generation 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 , so that the gas pipe 40 can guide leakage The gas generates bubbles 10 in the liquid 20 in the liquid pipe 50 .

A liquid pipe flow channel 31 is formed inside the body of the bubble filter 30 . The two ends of the liquid pipe flow channel 31 respectively extend to the surface of the body of the bubble filter 30 to form a liquid supply pipe joint 34 and a parallel to each other. The drain pipe connection port 35 is used to connect the liquid supply pipe 51, and the drain pipe connection port 35 is used to connect the drain pipe 52. In the shape of a circular pipe wall, the drain pipe connecting port 35 is implemented in the shape of a pipe hole. Further, there are different height differences between the connecting port 34 of the liquid feeding pipe and the connecting port 35 of the liquid discharging pipe. In a specific implementation, the height of the connecting port 34 of the liquid feeding pipe in the bubble accommodating chamber 32 is relatively low. Connect to port 35 on the drain pipe.

A bubble accommodating chamber 32 is formed in the body of the bubble filter 30 . The connecting port 34 of the liquid supply pipe and the connecting port 35 of the liquid discharging pipe are communicated with each other through the air bubble accommodating chamber 32 , so that the liquid feeding pipe 51 is communicated with the liquid discharging pipe 52 through the air bubble accommodating chamber 32 . The body of the air bubble filter 30 also has an open slot 33 connected to the air bubble accommodating chamber 32 formed on the end wall forming the connecting port 34 of the liquid supply pipe. The open slot 33 is located in the air bubble accommodating chamber 32 The height is relatively higher than the connection port 34 of the liquid supply pipe, and the opening area of the connection port 34 of the liquid supply pipe is smaller than that of the open slot 33, so that after the bubble 10 enters the bubble accommodating chamber 32 from the liquid supply pipe 51, it can pass through the open slot 33. Quickly leave the air bubble accommodating chamber 32, and will not accumulate in the air bubble accommodating chamber to form an air lock phenomenon. In addition, one end of the liquid feeding pipe 51 is implanted into the bubble accommodating chamber 32, so that the air bubbles 10 enter the bubble accommodating chamber and then approach the liquid discharging pipe 52, so that part of the air bubbles 10 (that is, the monitoring air bubbles 13) can enter the liquid discharging pipe 52. middle.

One end of the pressure pipe 60 is connected to the drain pipe 52 , and the other end is connected to a driver (not shown), the driver is used to drive the liquid 20 in the pressure pipe 60 to flow into the drain pipe 52 to drive the inside of the drain pipe 52 In order to flow the liquid 20, the driver may be a liquid pump in practice. Further, in practice, the pressurizing pipe 60 and the drain pipe 52 communicate with each other through a three-way element 90 , and the three-way element 90 has a first inlet 91 , a second inlet 92 and an outlet that communicate with each other. 93, wherein the first inlet 91 is used to connect the drain pipe 52, the second inlet 92 is used to connect the pressurized pipe 60, the outlet 93 is used to drain the liquid 20, the first inlet 91 and the second inlet 92 are connected The included angle between them 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 pressurized pipe 60 flows into When the liquid drain pipe 52 is inside, the liquid 20 in the liquid drain pipe 52 can be smoothly driven to flow to the outlet 93 . In addition, the pressurizing pipe 60 may be formed by extending from one side of the drain pipe 52 in practice.

The drain pipe 52 is provided with a bubble sensing element 80 , the bubble sensing element 80 is located between the body of the bubble filter 30 and the pressurizing pipe 60 , thereby monitoring the liquid 20 in the drain pipe 52 Whether there are air bubbles 10 passing through and the size and number of air bubbles 10. The bubble sensing element 80 can be selected from an ultrasonic sensor or a vision device mounted with a charge coupled device (CCD), and these bubble sensing elements 80 can be easily It is arranged on the drain pipe 52 by assembling means such as locking, sticking or snapping. When the bubble sensing element 80 is an ultrasonic sensor, the drainage tube 52 can be transparent or opaque; the ultrasonic sensor can penetrate transparent or opaque drainage by virtue of the ultrasonic waves generated by the ultrasonic sensor The tube 52 is used to sense the air bubble 10 in the liquid 20 of the drain tube 52 . In addition, when the bubble sensing element 80 is a vision device, the drain pipe 52 must be transparent, so that the vision device can see through the bubble 10 in the liquid 20 in the drain pipe 52 through the transparent drain pipe 52 .

According to the above configuration, please continue to refer to FIGS. 3 to 5 , the operation explanatory diagrams of the present invention are sequentially disclosed, illustrating that the liquid 20 in the pressurized pipe 60 flows into the discharge pipe 52 through the drive of the driver, thereby driving the discharge pipe 52 The liquid 20 inside flows, and the liquid 20 in the liquid feeding pipe 51 flows along with it, so that the bubbles 10 in the liquid feeding pipe 51 are driven by the liquid 20 and flow from the liquid feeding pipe 51 to the bubble accommodating chamber 32 (as shown in FIG. 3 ) , which includes the oversized bubbles 11 formed by accumulation in the liquid feeding pipe 51 , and the oversized bubbles 11 refer to the volume of the oversized bubbles 11 being larger than the preset bubble volume range.

When the oversized bubble 11 enters the bubble accommodating chamber 32 through the liquid feeding pipe 51 (as shown in FIG. 4 ), the oversized bubble 11 will float up, and during the process of floating, the oversized bubble 11 will decompose into excess bubbles 12 and monitor For the air bubbles 13 , the bubble volume of the excess air bubbles 12 is larger than that of the monitoring air bubbles 13 , and the excess air bubbles 12 will flow out of the air bubble accommodating chamber 32 due to their buoyancy through the open slot 33 and enter the liquid tank 70 .

Since the bubble volume of the monitoring bubble 13 is smaller than the excess air bubble 12, that is, the buoyancy of the monitoring bubble 13 is smaller than that of the excess air bubble 12, when the liquid 20 in the driving liquid discharge pipe 52 of the pressurizing pipe 60 flows, the liquid discharging pipe is made to flow. 52 is in a negative pressure state, so that the monitoring bubble 13 with small buoyancy is sucked into the drain pipe 52 (as shown in FIG. 5 ), whereby the volume of the bubble is screened. When the monitoring bubble 13 passes the bubble through the drain pipe 52 When the sensing element 80 is used, the size and quantity of the monitored bubbles 13 are monitored by the bubble sensing element 80 .

The above embodiments are only preferred embodiments of the present invention, but should not be construed as limiting 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: Connection port for liquid feeding pipe

35: Drain pipe connector

40: Gas conduit

50: Liquid pipe

51: Feeding pipe

52: Drain pipe

60: Pressurized tube

80: Bubble sensing element

90: Tee components

91: The first entrance

92: Second entrance

93: Export

Claims (13)

A bubble detection device for preventing gas plugs from being generated in a liquid pipe, comprising: a gas conduit for guiding the leaking gas; a liquid pipe, which is formed by connecting a liquid supply pipe and a liquid discharge pipe in series, and one end of the gas conduit is inserted into the liquid supply pipe, so that air bubbles are generated in the liquid supply pipe; a bubble filter, a liquid pipe flow channel and a bubble accommodating chamber are formed inside the body of the device, and the liquid pipe flow channel is provided with the liquid supply pipe and the liquid discharge pipe connected in series with each other at both ends; a pressurized 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 channel penetrates through the bubble accommodating chamber, and a bubble sensing element is arranged on the liquid discharge pipe, and the bubble sensing element is located between the body of the bubble filter and the pressurizing pipe; The liquid supply pipe is communicated with the liquid discharge pipe through the bubble accommodating chamber. An open notch is formed on a side wall of the bubble accommodating chamber. The bubble accommodating chamber and the open notch jointly screen the The bubble volume range of the bubbles provided to the liquid pipe makes an oversized bubble larger than the bubble volume range decompose into an excess bubble and a monitoring bubble. The monitoring air bubble is guided into the drain pipe through the air bubble accommodating chamber to be detected by the air bubble sensing element. The air bubble detection device for preventing the formation of gas plugs in the liquid pipe according to claim 1, wherein a liquid supply pipe connection port and a liquid discharge pipe connection port are respectively formed at both ends of the liquid pipe flow channel parallel to each other. The pipe connecting port and the liquid discharging pipe connecting port are communicated with each other through the bubble accommodating chamber, and the liquid feeding pipe connecting port and the liquid discharging pipe connecting port have different height differences. The air bubble detection device for preventing the generation of air locks in the liquid pipe according to claim 2, wherein the height of the connection port of the liquid supply pipe in the air bubble accommodating chamber is relatively lower than the height of the connection port of the liquid discharge pipe. The air bubble detection device for preventing the generation of air plugs in the liquid pipe as claimed in claim 2, wherein One end of the liquid feeding tube is inserted into the air bubble accommodating chamber through the connecting port of the liquid feeding tube. The air bubble detection device for preventing the generation of gas plugs in the liquid pipe as claimed in claim 2, wherein the joint of the liquid supply pipe is made into a semicircular tube wall shape, and the opening area of the joint of the liquid supply pipe is smaller than the open notch . The air bubble detection device for preventing the generation of gas plugs in the liquid pipe according to claim 2, wherein the connecting port of the liquid supply pipe and the open notch are formed on the same side end wall of the container body. The air bubble detection device for preventing air plugs from being generated in the liquid pipe according to claim 2, 5 or 6, wherein the height of the connection port of the liquid supply pipe in the air bubble accommodating chamber is relatively lower than the open slot. The air bubble detection device for preventing the formation of air plugs in the liquid pipe according to claim 2, wherein the joint of the liquid discharge pipe is formed in the shape of a pipe hole. The air bubble detection device for preventing the generation of air plugs in the liquid pipe according to claim 1, wherein the pressurizing pipe and the liquid discharging pipe are communicated with each other through a three-way element. The air bubble detection device for preventing the generation of air locks in the liquid pipe according to claim 8, wherein the three-way element has a first inlet for connecting with the drain pipe, and a second inlet for connecting with the pressurized pipe. An inlet and an outlet for draining the liquid, the angle between the first inlet and the second inlet is greater than 0 degrees and less than 180 degrees, and 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 generation of air plugs in the liquid pipe according to claim 1, wherein the pressurized pipe is formed by extending from one side of the liquid discharge pipe. The air bubble detection device for preventing air plugs from being generated in the liquid pipe according to claim 1, wherein the air bubble sensing element is an ultrasonic sensor. The air bubble detection device for preventing air plugs from being generated in the liquid pipe according to claim 1, wherein the air bubble sensing element is a vision device mounted with a charge-coupled element.

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