CN113804359B

CN113804359B - Bubble detection device to prevent air lock in liquid pipe

Info

Publication number: CN113804359B
Application number: CN202010550887.7A
Authority: CN
Inventors: 郑升凯; 郑香弘; 谭曾包裕
Original assignee: Mas Automation Corp
Current assignee: Mas Automation Corp
Priority date: 2020-06-11
Filing date: 2020-06-16
Publication date: 2025-03-07
Anticipated expiration: 2040-06-16
Also published as: CN113804359A; TW202146872A; TWI718963B; CN212693154U

Abstract

The invention provides a bubble detection device for preventing air lock in a liquid pipe, which comprises a gas conduit, a liquid pipe, a bubble screening device and a pressurizing pipe, wherein the liquid pipe is formed by connecting a liquid feeding pipe and a liquid discharging pipe in series, the gas conduit is inserted into the liquid feeding pipe, the bubble screening device is provided with a bubble accommodating chamber, 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, the bubble accommodating chamber screens bubbles provided by the liquid feeding pipe, so that an oversized bubble is decomposed into an excessive bubble and a monitoring bubble, the excessive bubble is discharged out of the bubble accommodating chamber, and the monitoring bubble is guided into the liquid discharging pipe to receive the detection of the bubble sensing element so as to improve the detection accuracy when small-flow gas leaks.

Description

Bubble detection device for preventing air lock generated in liquid pipe

Technical Field

The invention is applied to the field of leakage gas detection, relates to prevention of gas plug phenomenon generated in a liquid pipe by leakage gas, and further provides a bubble detection device for preventing gas plug generated in the liquid pipe.

Background

Generally, process gases are present in industrial equipment such as heat exchangers, boilers, heat treatments, gas or exhaust treatments, which are at most at a specific pressure and are guided or stored by means of constructional elements such as pipes or cabins.

Moreover, it is known that industrial equipment in which process gas is present often suffers from process gas leakage after a period of use, which affects the quality of the industrial equipment. If the leaked process gas is toxic, it may pose a considerable threat to the environment, to personnel health and even to safety. Therefore, the process gases in these industrial facilities must be immediately detected once they leak out to maintain the facilities' proper rate, environmental sanitation and public safety.

As known, there are industrial equipments for process gas, and it is mostly possible to install a measuring device such as a gas pressure sensor, a gas flowmeter, etc. at a gas guiding pipeline or a gas storage cabin to detect whether the process gas leaks. However, it is difficult to precisely detect the leakage of small flow gas in these prior art.

However, when the flow rate of the leakage gas is too small, the thrust of the leakage gas with small flow rate in the liquid pipe is relatively reduced, so that the bubbles generated by the leakage gas with small flow rate are easy to accumulate in the liquid pipe, thereby generating a gas lock phenomenon, and even preventing the promotion of the bubbles, which affects the accuracy of the detection of the leakage gas with small flow rate, so that improvement is needed.

Disclosure of Invention

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

To achieve the above objective, a preferred embodiment of the present invention provides a bubble detection device for preventing air lock generated in a liquid tube, so as to improve the accuracy of detection when small-flow air leaks. The technical means comprises a gas conduit, a liquid pipe, a gas filter, a pressurizing pipe, a pressure pipe, a driver, a bubble sensing element and an open notch, wherein the gas conduit is formed by connecting a liquid feeding pipe and a liquid discharging pipe in series, one end of the gas conduit is inserted into the liquid feeding pipe to enable bubbles to be generated in the liquid feeding pipe, the inside of the liquid feeding pipe is provided with a liquid pipe runner and a bubble accommodating chamber, the two ends of the liquid pipe runner respectively provide the liquid feeding pipe and the liquid discharging pipe in series, one end of the pressurizing pipe is communicated with the liquid discharging pipe, the other end of the pressurizing pipe is connected with the driver, the liquid pipe runner extends through the bubble accommodating chamber, the liquid discharging pipe is provided with the bubble sensing element, the bubble sensing element is located between the liquid feeding pipe and the pressurizing pipe, the liquid feeding pipe is communicated with the liquid discharging pipe through the bubble accommodating chamber, the open notch is formed in one side end wall of the bubble accommodating chamber, the bubble accommodating chamber and the open notch is jointly screened by the bubble accommodating chamber, and an excessive bubble which is larger than the bubble volume range provided by the liquid feeding pipe is decomposed into an excessive bubble and a monitoring notch, and the monitoring bubble is separated from the bubble sensing element through the bubble sensing element in the liquid feeding pipe.

In a further implementation, two ends of the liquid pipe flow channel are respectively provided with a liquid feeding pipe joint and a liquid discharging pipe joint which are parallel to each other, the liquid feeding pipe joint and the liquid discharging pipe joint are mutually communicated through the bubble accommodating chamber, and different height differences are arranged between the liquid feeding pipe joint and the liquid discharging pipe joint.

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

In a further implementation, one end of the liquid supply pipe is implanted into the bubble accommodating chamber through the liquid supply pipe joint.

In a further embodiment, the feeding tube adaptor is formed in a semicircular tube wall shape, and the opening area of the feeding tube adaptor is smaller than the opening notch.

In a further embodiment, the feeding tube mouthpiece and the open slot are formed on the same side end wall of the body.

In a further embodiment, the height of the liquid supply pipe joint in the bubble accommodating chamber is relatively lower than that of the open notch.

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

In further implementations, the pressurized tube communicates with the drain tube via a three-way element.

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

In a further embodiment, the pressurized tube is formed by extending from one side of the drain tube.

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

In a further implementation, the bubble sensing element is a viewer mounted with a charge coupled element.

According to the technical means, the invention has the advantages that the bubble screening and dynamic drainage technology is combined, so that bubbles generated in the liquid pipe by small-flow leakage gas are promoted, and the phenomenon of air lock generated by accumulation due to too low pressure in the liquid pipe is avoided, thus the invention is beneficial to the promotion of bubbles in the liquid pipe, and when the air lock is generated carelessly in the liquid pipe, the larger-volume gas of the air lock can be smoothly screened into monitoring bubbles with proper volume, so that the detection accuracy of the small-flow leakage gas is improved.

The technical means of the method and the device and the specific implementation details of the production performance thereof are described with reference to the following examples and drawings.

Drawings

Fig. 1 is a schematic perspective view of a bubble detecting device for preventing occurrence of air lock in a liquid tube according to the present invention.

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

Fig. 3 to 5 are schematic views of the operation of the bubble detecting device for preventing occurrence of air lock in the liquid tube according to the present invention.

The reference numerals illustrate 10-bubble, 11-oversized bubble, 12-excess bubble, 13-monitored bubble, 20-liquid, 30-bubble screener, 31-liquid tube flow channel, 32-bubble accommodation chamber, 33-open slot, 34-liquid feed tube mouthpiece, 35-liquid discharge tube mouthpiece, 40-gas conduit, 50-liquid tube, 51-liquid feed tube, 52-liquid discharge tube, 60-pressurized tube, 70-liquid tank, 80-bubble sensing element, 90-tee element, 91-first inlet, 92-second inlet, 93-outlet.

Detailed Description

First, referring to fig. 1 and 2 in combination, a preferred embodiment of the present invention is disclosed, which is a bubble detection device for preventing air lock generated in a liquid tube, comprising a gas conduit 40, a liquid tube 50, a bubble screener 30 and a pressurization tube 60. Wherein:

The gas conduit 40 is used to guide leakage gas from an industrial facility, which may be a heat exchange facility with process gas, a boiler, a heat treatment facility, a gas or exhaust gas treatment facility, etc. Conventionally, in order to prevent leakage of process gas, the industrial equipment is usually provided with a gas conduit 40 for guiding the leaked gas at a position where the gas is easily leaked, such as a guiding pipeline for guiding the process gas or a pipeline interface and a hatch cover interface of a gas storage cabin, so as to prevent the process gas from leaking into the atmosphere.

The liquid pipe 50 is filled with a liquid 20, and the liquid 20 may be water, or other oil or solvent which does not affect the generation of bubbles and floats up. The liquid pipe 50 is formed by connecting a liquid feeding pipe 51 and a liquid discharging pipe 52 in series, and one end of the gas pipe 40 is inserted into the liquid feeding pipe 51, so that the gas pipe 40 can guide leaked gas to generate bubbles 10 in the liquid 20 of the liquid pipe 50.

The inside of the body of the bubble screening device 30 forms a liquid pipe flow channel 31, two ends of the liquid pipe flow channel 31 respectively extend to the surface of the body of the bubble screening device 30 and are provided with a liquid supply pipe joint 34 and a liquid discharge pipe joint 35 which are parallel to each other, the liquid supply pipe joint 34 is used for being jointed with a liquid supply pipe 51, the liquid discharge pipe joint 35 is used for being jointed with a liquid discharge pipe 52, the liquid supply pipe joint 34 is made into a semicircular pipe wall shape in practice, and the liquid discharge pipe joint 35 is made into a pipe hole shape in practice. Further, the liquid supply pipe joint 34 and the liquid discharge pipe joint 35 have different height differences, and in practice, the height of the liquid supply pipe joint 34 in the bubble accommodating chamber 32 is relatively lower than that of the liquid discharge pipe joint 35.

The air bubble screening device 30 has an air bubble chamber 32 formed therein, and the liquid supply pipe joint 34 and the liquid discharge pipe joint 35 communicate with each other via the air bubble chamber 32, so that the liquid supply pipe 51 communicates with the liquid discharge pipe 52 via the air bubble chamber 32. The body of the air bubble screening device 30 is further provided with an open notch 33 connected with the air bubble accommodating chamber 32 on the end wall forming the liquid feeding pipe connecting port 34, the height of the open notch 33 in the air bubble accommodating chamber 32 is relatively higher than that of the liquid feeding pipe connecting port 34, and the open area of the liquid feeding pipe connecting port 34 is smaller than that of the open notch 33, so that after the air bubbles 10 enter the air bubble accommodating chamber 32 from the liquid feeding pipe 51, the air bubbles can rapidly leave the air bubble accommodating chamber 32 through the open notch 33, and the air bubbles cannot be accumulated in the air bubble accommodating chamber to form an air lock phenomenon. In addition, one end of the liquid supply pipe 51 is implanted in the bubble accommodating chamber 32, so that the bubbles 10 enter the bubble accommodating chamber and then approach the liquid discharge pipe 52, so as to facilitate part of the bubbles 10 (i.e. the monitoring bubbles 13) to enter the liquid discharge pipe 52.

The pressurizing tube 60 has one end connected to the liquid discharge tube 52 and the other end connected to a driver (not shown) for driving the liquid 20 in the pressurizing tube 60 to flow into the liquid discharge tube 52 to drive the liquid 20 in the liquid discharge tube 52 to flow, wherein the driver may be a liquid pump in practice. Further, the pressurizing pipe 60 and the liquid discharge pipe 52 are in communication via a three-way element 90, the three-way element 90 has a first inlet 91, a second inlet 92 and an outlet 93, wherein the first inlet 91 is used for connecting the liquid discharge pipe 52, the second inlet 92 is used for connecting the pressurizing pipe 60, the outlet 93 is used for discharging the liquid 20, the included angle between the first inlet 91 and the second inlet 92 is greater than 0 degree and less than 180 degrees, the included angle between the first inlet 91 and the second inlet 92 and the outlet 93 is greater than 90 degrees and less than or equal to 180 degrees, and when the liquid 20 in the pressurizing pipe 60 flows into the liquid discharge pipe 52, the liquid 20 in the liquid discharge pipe 52 can be smoothly driven to flow to the outlet 93. The pressurizing pipe 60 may be formed by extending from the drain pipe 52 side.

The liquid discharge pipe 52 is provided with a bubble sensing element 80, and the bubble sensing element 80 is located between the body of the bubble screening device 30 and the pressurizing pipe 60, so as to monitor whether the liquid 20 in the liquid discharge pipe 52 has bubbles 10 passing through and the size and quantity of the bubbles 10. The bubble sensor 80 may be an ultrasonic sensor or a CCD-mounted vision device, and the bubble sensor 80 may be easily mounted on the drain pipe 52 by means of assembly such as locking, adhering or fastening. When the bubble sensing element 80 is an ultrasonic sensor, the liquid discharge tube 52 may be transparent or opaque, and the ultrasonic sensor may penetrate the transparent or opaque liquid discharge tube 52 by means of ultrasonic waves generated thereby to sense bubbles 10 in the liquid 20 of the liquid discharge tube 52. In addition, when the bubble sensing element 80 is a vision, the drain 52 must be transparent to provide a vision through the transparent drain 52 to see through the bubbles 10 in the liquid 20 of the drain 52.

According to the above configuration, referring to fig. 3 to 5, the operation explanatory diagrams of the present invention are sequentially disclosed, and the liquid 20 in the pressurizing pipe 60 flows into the liquid discharge pipe 52 through the driving of the driver, so as to drive the liquid 20 in the liquid discharge pipe 52 to flow, and the liquid 20 in the liquid supply pipe 51 flows along with the liquid, so that the bubbles 10 in the liquid supply pipe 51 flow from the liquid supply pipe 51 to the bubble accommodating chamber 32 (as shown in fig. 3) through the driving of the liquid 20, wherein the oversized bubbles 11 formed by accumulation in the liquid supply pipe 51 are included, and the oversized bubbles 11 are the volume of which is larger than the preset bubble volume range.

When the oversized air bubbles 11 enter the air bubble accommodating chamber 32 through the liquid feeding pipe 51 (as shown in fig. 4), the oversized air bubbles 11 float upward, and during the upward floating process, the oversized air bubbles 11 are decomposed into excessive air bubbles 12 and monitoring air bubbles 13, the air bubble volume of the excessive air bubbles 12 is larger than that of the monitoring air bubbles 13, and the excessive air bubbles 12 drain out of the air bubble accommodating chamber 32 through the open notch 33 due to the buoyancy thereof and enter the liquid tank 70.

Since the monitoring bubble 13 has a smaller bubble volume than the surplus bubble 12, that is, the monitoring bubble 13 has a smaller buoyancy than the surplus bubble 12, when the liquid 20 in the liquid discharge tube 52 is driven by the pressurizing tube 60 to flow, the liquid discharge tube 52 is brought into a negative pressure state, and the monitoring bubble 13 having a smaller buoyancy is sucked into the liquid discharge tube 52 (as shown in fig. 5), so that the bubble volume is screened, and when the monitoring bubble 13 passes through the bubble sensing element 80 via the liquid discharge tube 52, the size and the number of the monitoring bubble 13 are monitored by the bubble sensing element 80.

The above description is illustrative of the invention and is not to be construed as limiting, and it will be understood by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A bubble detection device for preventing gas plugs from forming in a liquid pipe, comprising:

A gas conduit for guiding the leaked gas;

A liquid pipe, formed by connecting a liquid supply pipe and a liquid discharge pipe in series, one end of the gas conduit is plugged into the liquid supply pipe, so that bubbles are generated in the liquid supply pipe;

A bubble filter, wherein a liquid pipe flow channel and a bubble containing chamber are formed inside the body, and the two ends of the liquid pipe flow channel are respectively provided for the liquid supply pipe and the liquid discharge pipe to be connected in series with each other;

a pressurizing tube, one end of which is connected to the discharge tube and the other end of which is connected to a driver;

The liquid pipe channel extends through the bubble accommodation chamber, and a bubble sensing element is provided 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 connected with the liquid discharge pipe through the bubble accommodating chamber, and an open slot is formed on one side end wall of the bubble accommodating chamber. The bubble accommodating chamber and the open slot jointly screen the bubble volume range of the bubbles provided by the liquid supply pipe, so that an excessively large bubble larger than the bubble volume range is decomposed into an excess bubble and a monitoring bubble. The excess bubble is discharged from the liquid pipe flow channel through the open slot, and the monitoring bubble is guided into the liquid discharge pipe through the bubble accommodating chamber to be detected by the bubble sensing element.

2. The bubble detection device for preventing air plugs from forming in a liquid pipe as described in claim 1 is characterized in that: a liquid supply pipe connection port and a liquid discharge pipe connection port which are parallel to each other are respectively formed at both ends of the liquid pipe flow channel, the liquid supply pipe connection port and the liquid discharge pipe connection port are connected to each other via the bubble accommodating chamber, and there is a different height difference between the liquid supply pipe connection port and the liquid discharge pipe connection port.

3. The bubble detection device for preventing air plugs from forming in a liquid pipe as described in claim 2, wherein the height of the liquid supply pipe connection port in the bubble containing chamber is relatively lower than that of the liquid discharge pipe connection port.

4. The bubble detection device for preventing air plugging in a liquid pipe as described in claim 2 is characterized in that one end of the liquid supply pipe is implanted into the bubble containing chamber via the liquid supply pipe connection port.

5. The bubble detection device for preventing gas plugs from forming in a liquid pipe as described in claim 2, wherein the connection port of the liquid supply pipe is formed into a semicircular tube wall shape, and the opening area of the connection port of the liquid supply pipe is smaller than the open slot.

6. The bubble detection device for preventing air plugs from forming in a liquid pipe as claimed in claim 2, wherein the liquid supply pipe connection port and the open slot are formed on the same side end wall of the device body.

7. The bubble detection device for preventing air plugging in a liquid pipe as claimed in claim 2, 5 or 6, characterized in that the height of the liquid supply pipe connection port in the bubble accommodating chamber is relatively lower than the open slot.

8. The bubble detection device for preventing gas plugs from forming in a liquid pipe as claimed in claim 2, wherein the connection port of the liquid discharge pipe is formed in the shape of a tube hole.

9. The bubble detection device for preventing air plugging in a liquid pipe as claimed in claim 1, wherein the pressurizing pipe is connected to the liquid discharge pipe via a three-way element.

10. A bubble detection device for preventing air plugs from forming in a liquid pipe as described in claim 9, characterized in that: the three-way element has a first inlet for connecting to a discharge pipe, a second inlet for connecting to a pressurized pipe, 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, 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.

11. The bubble detection device for preventing air plugging in a liquid pipe as claimed in claim 1, wherein the pressurizing pipe is formed by extending from one side of the liquid discharge pipe.

12. The bubble detection device for preventing gas plugging in a liquid pipe as claimed in claim 1, wherein the bubble sensing element is an ultrasonic sensor.

13. The bubble detection device for preventing gas plugging in a liquid pipe as claimed in claim 1, wherein the bubble sensing element is a visual device equipped with a charge coupled device.