Bubble propulsion method in liquid pipe and bubble screening propeller

Abstract

The present invention provides a method for propulsing bubbles in a liquid pipe and a bubble screening propeller, wherein the method for propulsing bubbles in a liquid pipe includes guiding leaked gas into a liquid pipe to generate bubbles, providing a driving force to drive the liquid flow rate in the liquid pipe to drive the bubbles in the liquid pipe to flow, constraining a bubble volume range to screen the bubble volume of the bubbles in the liquid pipe, decomposing an overly large bubble larger than the bubble volume range into an excess bubble and a monitoring bubble, and making the bubble smaller than the bubble volume range become the monitoring bubble, wherein the excess bubble is driven by the driving force to discharge out of the liquid pipe, and the monitoring bubble is guided by the liquid pipe to be detected. The bubble screening propeller implementing the above method provided by the present invention can improve the accuracy of detection when a small flow gas leaks.

Description

Technical Field

[0001] The present invention is applied to the field of leaked gas detection, relates to preventing leaked gas from generating a gas plug in a liquid pipe, and further provides a bubble propulsion method in a liquid pipe and a bubble screening propeller. Background Art

[0002] Generally, process gases are present in industrial equipment such as heat exchange, boilers, heat treatment, gas or waste gas treatment. The process gases usually have a specific pressure and are guided or stored using structural elements such as pipes or chambers.

[0003] It is also known that industrial equipment with process gas is prone to process gas leakage after a period of use, which affects the serviceability of these industrial equipment. If the leaked process gas is toxic, it will pose a considerable threat to the environment, the health and even the safety of personnel. Therefore, once the process gas in these industrial equipment leaks, it must be detected immediately to maintain the serviceability of the equipment, environmental hygiene and public safety.

[0004] It is known that currently, industrial equipment with process gas usually installs gas pressure sensors, gas flow meters and other measuring elements in gas flow pipes or gas storage tanks to detect whether the process gas is leaking. However, it is difficult to accurately detect small flow gas leaks with such existing technologies.

[0005] 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 notifying the leaked gas by detecting the number or volume of bubbles generated in the liquid; however, when the flow rate of the leaked gas is too small, this technology is prone to accumulate in the liquid pipe because the thrust of the leaked gas with a small flow rate in the liquid pipe is relatively small, thereby generating a gas plug phenomenon, and even hindering the propulsion of the bubbles, affecting the accuracy of the detection of the small flow rate leaked gas, and therefore it is urgent to improve it. Summary of the invention

[0006] The purpose of the present invention is to improve the accuracy of detecting the leakage of small-flow gas.

[0007] To achieve the above-mentioned purpose, a preferred embodiment of the present invention is to provide a method for propulsing bubbles in a liquid tube to improve the accuracy of detection when a small flow of gas leaks. Its technical means include: S1: guiding the leaked gas into a liquid tube to generate bubbles; S2: providing a driving force to drive the liquid flow rate in the liquid tube to drive the bubbles in the liquid tube to flow; S3: constraining a bubble volume range to screen the bubble volume of the bubbles in the liquid tube, so that an overly large bubble larger than the bubble volume range is decomposed into an excess bubble and a monitoring bubble, and the bubble smaller than the bubble volume range becomes the monitoring bubble; wherein, through the driving of the driving force, the excess bubbles are discharged from the liquid tube, and the monitoring bubble is detected through the guidance of the liquid tube.

[0008] In a further implementation, the driving force is a thrust provided by a driver.

[0009] In a further implementation, at least a portion of the liquid pipe is submerged in the liquid of a liquid tank, the volume of bubbles in the liquid pipe is screened in the liquid of the liquid tank, and the excess bubbles are discharged into the liquid of the liquid tank.

[0010] In a further embodiment, the bubble volume range is set by a bubble filter, the bubble filter is sunk into the liquid in the liquid tank, and the excess bubbles are discharged into the liquid in the liquid tank and leave the liquid pipe.

[0011] In a further implementation, the density of the liquid in the liquid tank is the same as the density of the liquid in the liquid pipe.

[0012] In order to implement the above method, another preferred embodiment of the present invention is to provide a bubble screening propeller, including: a body, a liquid pipe flow channel and a bubble accommodating chamber are formed inside the body, the liquid pipe flow channel extends through the bubble accommodating chamber, the two ends of the liquid pipe flow channel are respectively connected to a liquid supply pipe for providing bubbles and a liquid discharge pipe for discharging bubbles for detection, the liquid supply pipe is connected to the liquid discharge pipe via the bubble accommodating chamber; a pressurizing pipe, one end of which is connected to the liquid discharge pipe, and the other end is connected to a driver; wherein an open slot connected to the bubble accommodating chamber is formed on one side end wall of the body, 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 overly 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 via the open slot, and the monitoring bubble is guided to the liquid discharge pipe via the driver for detection.

[0013] In further implementation, a liquid supply pipe connection port and a liquid discharge pipe connection port which are parallel to each other are formed at both ends of the liquid pipe flow channel respectively. The liquid supply pipe connection port and the liquid discharge pipe connection port are interconnected 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.

[0014] In a further implementation, the height of the liquid supply pipe connection port in the bubble accommodating chamber is relatively lower than that of the liquid discharge pipe connection port.

[0015] In a further implementation, one end of the liquid feeding tube is implanted into the bubble containing chamber through the liquid feeding tube connection port.

[0016] In a further implementation, the connection port of the liquid supply pipe is made 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.

[0017] In a further implementation, the liquid feeding pipe connection port and the open slot are formed on the same side end wall of the device body.

[0018] In a further implementation, the height of the liquid feeding pipe connection port in the bubble accommodating chamber is relatively lower than the open slot.

[0019] In a further implementation, the connection port of the drainage pipe is made into a tube hole shape.

[0020] In a further implementation, the pressurizing pipe and the drain pipe are connected via a three-way element.

[0021] In a further implementation, the three-way element has a first inlet connected to the discharge pipe, a second inlet connected to the 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.

[0022] In a further implementation, the pressurizing pipe is formed by extending from one side of the drain pipe.

[0023] According to the above technical means, the advantages of the present invention are: combining bubble screening and dynamic drainage technology, the bubbles generated by the small flow of leaked gas in the liquid pipe will not accumulate and form gas plugs due to the low pressure in the liquid pipe. Therefore, the present invention helps to propel the bubbles in the liquid pipe, and when a gas plug is accidentally generated in the liquid pipe, the larger volume of gas in the gas plug can be smoothly screened into monitoring bubbles of suitable volume, so as to improve the detection accuracy of small flow leaked gas.

[0024] The technical means of the above-described method and device and the specific implementation details of their effectiveness are described with reference to the following embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a flow chart of the steps of the bubble propulsion method in the liquid tube of the present invention.

[0026] Figure 2a to Figure 2c Execution Figure 1 Schematic diagram of the method's actions.

[0027] Figure 3 It is a three-dimensional schematic diagram of the bubble screening propeller of the present invention.

[0028] Figure 4 yes Figure 3 sectional diagram of .

[0029] Figure 5a to Figure 5c They are respectively schematic diagrams of the action of the bubble screening propeller of the present invention.

[0030] Explanation of the reference numerals: 10-bubble; 11-too large bubble; 12-excess bubble; 13-monitoring bubble; 20-liquid; 30-body; 31-liquid pipe channel; 32-bubble containing chamber; 33-open slot; 34-liquid supply pipe connection port; 35-liquid discharge pipe connection port; 40-gas duct; 50-liquid pipe; 51-liquid supply pipe; 52-liquid discharge pipe; 60-pressurizing pipe; 70-liquid tank; 80-bubble filter; 90-three-way element; 91-first inlet; 92-second inlet; 93-outlet; S1 to S3-description of the steps of the embodiment. DETAILED DESCRIPTION

[0031] See also Figure 1 , illustrating the bubble propulsion method in the liquid pipe provided by the present invention, comprising sequentially performing the following steps S1 to S3:

[0032] Step S1: guiding gas into the liquid pipe.

[0033] See also Figure 2a , it is explained that a gas conduit 40 is connected to a liquid pipe 50, wherein the gas conduit 40 is used to guide the leaked gas of industrial equipment, and the industrial equipment may be a heat exchange equipment, boiler, heat treatment equipment, gas equipment or waste gas treatment equipment with process gas. According to common knowledge, in order to prevent the leakage of process gas, such industrial equipment usually installs a gas conduit 40 for guiding the leaked gas at the location where the gas is easily leaked, such as the pipe interface and hatch cover interface of the gas storage tank, which is used to guide the process gas to prevent the process gas from leaking into the atmosphere. The liquid pipe 50 is filled with liquid 20, and the liquid 20 may be water or other oil or solvent that does not affect the generation and floating of bubbles. In this way, the gas conduit 40 can guide the leaked gas to generate bubbles 10 in the liquid 20 of the liquid pipe 50.

[0034] Step S2: driving the bubbles to flow.

[0035] See also Figure 2b , indicating that a driving force is provided to the liquid 20 in the liquid tube 50 to drive the flow rate of the liquid 20, thereby driving the bubbles 10 in the liquid tube 50 to flow, avoiding the accumulation of bubbles 10 in the liquid tube 20 to generate air plug phenomenon. The driving force is formed by the thrust provided by a driver in practice.

[0036] Step S3: constraining the bubble volume range.

[0037] See also Figure 2c , which means that at least a portion of the liquid tube 50 is sunk into the liquid 20 in a liquid tank 70, and the liquid tank 70 may be framed by a transparent or opaque tank wall, so that the liquid tank 70 is connected to the atmosphere and filled with liquid 20, and the density of the liquid 20 in the liquid tank 70 is the same as that of the liquid 20 in the liquid tube 50. The liquid tube 50 sunk into the liquid 20 in the liquid tank 70 is connected to a bubble filter 80 which is also sunk into the liquid 20 in the liquid tank 70, and the bubble filter 80 is used to restrict the bubble volume range of the bubble 10. More specifically, the bubble filter 80 filters the volume of bubbles in the liquid pipe 50 in the liquid 20 of the liquid tank 70, so that an oversized bubble 11 larger than the bubble volume range is decomposed into an excess bubble 12 and a monitoring bubble 13, and the bubble 10 smaller than the bubble volume range becomes the monitoring bubble 13, and through the driving force, the excess bubble 12 is discharged into the liquid 20 of the liquid tank 70 and leaves the liquid pipe 50, and the monitoring bubble 13 is guided by the liquid pipe 50 to be detected.

[0038] On the other hand, please refer to Figure 3 and Figure 4 , indicating that the present invention also provides a bubble screening propeller, so that the bubble propulsion method in the liquid pipe can be easily implemented. From the above, it can be known that the bubble screening propeller includes a body 30 and a pressurized pipe 60. Among them:

[0039] A liquid pipe channel 31 is formed inside the body 30. Both ends of the liquid pipe channel 31 extend to the surface of the body 30 to form a liquid supply pipe connection port 34 and a liquid discharge pipe connection port 35 which are parallel to each other. The liquid supply pipe connection port 34 is used to connect a liquid supply pipe 51 for providing bubbles 10, and the liquid discharge pipe connection port 35 is used to connect a liquid discharge pipe 52 for discharging bubbles 10 for detection. The liquid supply pipe connection port 34 is made into a semicircular tube wall shape in practice, and the liquid discharge pipe connection port 35 is made into a tube hole shape in practice. Furthermore, there are different height differences between the liquid supply pipe connection port 34 and the liquid discharge pipe connection port 35. In specific practice, the height of the liquid supply pipe connection port 34 in the bubble accommodating chamber 32 is relatively lower than that of the liquid discharge pipe connection port 35.

[0040] A bubble accommodating chamber 32 is formed in the body 30. The liquid pipe flow channel 31 extends through the bubble accommodating chamber 32. The liquid supply pipe connection port 34 and the liquid discharge pipe connection port 35 are connected to each other through the bubble accommodating chamber 32, so that the liquid supply pipe 51 is connected to the liquid discharge pipe 52 through the bubble accommodating chamber 32. The body 30 also has an open slot 33 connected to the bubble accommodating chamber 32 formed on the same side end wall where the liquid supply pipe connection port 34 is formed. The height of the open slot 33 is relatively higher than that of the liquid supply pipe connection port 34, and the opening area of ​​the liquid supply pipe connection port 34 is smaller than that of the open slot 33, so that after the bubbles 10 enter the bubble accommodating chamber 32 from the liquid supply pipe 51, they can quickly leave the bubble accommodating chamber 32 through the open slot 33, and will not accumulate in the bubble accommodating chamber 32 to form an air blockage phenomenon. In addition, one end of the liquid supply tube 51 is implanted in the bubble accommodating chamber 32 , so that the bubble 10 enters the bubble accommodating chamber 32 and approaches the liquid discharge tube 52 , thereby facilitating some of the bubbles 10 (that is, the monitoring bubbles 13 ) to enter the liquid discharge tube 52 .

[0041] One end of the pressurizing tube 60 is connected to the discharge tube 52 , and the other end is connected to a driver (not shown). The driver is used to drive the liquid 20 in the pressurizing tube 60 to flow into the discharge tube 52 . The driver can be a liquid pump in practice. Furthermore, the pressurizing tube 60 and the drain pipe 52 are connected via 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 93 that are connected, wherein the first inlet 91 is used to connect to the drain pipe 52, the second inlet 92 is used to connect to the pressurizing tube 60, and the outlet 93 is used to discharge the liquid 20. The angle between the first inlet 91 and the second inlet 92 is greater than 0 degrees and less than 180 degrees, and the 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. When the liquid 20 in the pressurizing tube 60 flows into the drain pipe 52, it can smoothly drive the liquid 20 in the drain pipe 52 to flow to the outlet 93. In addition, the pressurizing tube 60 can be formed by extending from one side of the drain pipe 52 in practice.

[0042] Based on the above configuration, please continue to refer to Figure 5a to Figure 5c , the action explanation diagrams of the present invention are disclosed in sequence, which illustrate that the gas conduit 40 for guiding the leaked gas is connected to the liquid supply pipe 51, so that the gas in the gas conduit 40 generates bubbles 10 in the liquid 20 in the liquid supply pipe 51. At the same time, the liquid 20 in the pressurizing pipe 60 flows into the discharge pipe 52 through the drive of the driver, thereby driving the liquid 20 in the discharge pipe 52 to flow, so that the liquid 20 in the liquid supply pipe 51 flows along, so that the bubbles 10 in the liquid supply pipe 51 are driven by the liquid 20 and flow from the liquid supply pipe 51 to the bubble accommodation chamber 32 (such as Figure 5a As shown), it includes oversized bubbles 11 accumulated in the liquid feeding tube 51, and the oversized bubbles 11 refer to bubbles whose volume is greater than a preset bubble volume range.

[0043] When the oversized bubble 11 enters the bubble accommodation chamber 32 via the liquid supply pipe 51 (such as Figure 5b As shown in the figure, the oversized bubble 11 will float up, and in the process of floating up, the oversized bubble 11 will decompose into excess bubbles 12 and monitoring bubbles 13. The bubble volume of the excess bubble 12 is larger than the monitoring bubble 13. The excess bubble 12 will flow out of the bubble containing chamber 32 through the open slot 33 due to its buoyancy and enter the liquid tank 70.

[0044] Since the volume of the monitoring bubble 13 is smaller than the excess bubble 12, that is, the buoyancy of the monitoring bubble 13 is smaller than that of the excess bubble 12, when the pressurizing tube 60 drives the liquid 20 in the drain pipe 52 to flow, a negative pressure state is formed in the drain pipe 52, so that the monitoring bubble 13 with a smaller buoyancy will be sucked into the drain pipe 52 (such as Figure 5c As shown), in this way, the bubble volume is screened to facilitate subsequent detection operations.

[0045] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the claims, but all will fall within the scope of protection of the present invention.

Claims

1. A method for advancing bubbles in a liquid pipe, characterized in that: This involves performing the following steps: S1: Guide the leaked gas into a liquid tube to generate bubbles; S2: providing a driving force to drive the flow rate of the liquid in the liquid tube, so as to drive the bubbles in the liquid tube to flow; S3: constraining a bubble volume range to screen the bubble volumes of bubbles in the liquid tube, so that an overly large bubble larger than the bubble volume range is decomposed into a redundant bubble and a monitoring bubble, and a bubble smaller than the bubble volume range is made the monitoring bubble; Wherein, the excess bubbles are discharged from the liquid pipe by the driving force, and the monitoring bubbles are detected through the guidance of the liquid pipe.

2. The method for advancing bubbles in a liquid pipe according to claim 1, characterized in that: The driving force is a thrust provided by a driver.

3. The method for advancing bubbles in a liquid pipe according to claim 1, wherein: At least a portion of the liquid pipe is submerged in the liquid of a liquid tank, the volume of the bubbles in the liquid pipe is screened in the liquid of the liquid tank, and the excess bubbles are discharged into the liquid of the liquid tank.

4. The method for advancing bubbles in a liquid pipe according to claim 3, characterized in that: The bubble volume range is set by a bubble filter, which sinks into the liquid in the liquid tank, and the excess bubbles are discharged into the liquid in the liquid tank and leave the liquid pipe.

5. The method for advancing bubbles in a liquid pipe according to claim 3, characterized in that: The density of the liquid in the liquid tank is the same as that of the liquid in the liquid tube.

6. A bubble screening propeller, characterized in that: include: A body, wherein a liquid pipe flow channel and a bubble accommodating chamber are formed inside the body, the liquid pipe flow channel extends through the bubble accommodating chamber, and both ends of the liquid pipe flow channel are respectively connected to a liquid supply pipe for providing bubbles and a liquid discharge pipe for discharging bubbles for detection, and the liquid supply pipe is connected to the liquid discharge pipe via the bubble accommodating chamber; A pressurizing tube, one end of which is connected to the discharge tube, and the other end of which is connected to a driver; Among them, an open slot connected to the bubble accommodating chamber is formed on one side end wall of the device body. 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 discharge pipe by the driver for detection.

7. The bubble screening propeller according to claim 6, characterized in that: 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. 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 are different height differences between the liquid supply pipe connection port and the liquid discharge pipe connection port.

8. The bubble screening propeller according to claim 7, characterized in that: The height of the liquid supply pipe connection port in the bubble accommodating chamber is relatively lower than that of the liquid discharge pipe connection port.

9. The bubble screening propeller according to claim 7, characterized in that: One end of the liquid supply tube is implanted into the bubble containing chamber via the liquid supply tube connection port.

10. The bubble screening propeller according to claim 7, characterized in that: The connecting opening of the liquid supply pipe is made into a semicircular tube wall shape, and the opening area of ​​the connecting opening of the liquid supply pipe is smaller than the open slot.

11. The bubble screening propeller according to claim 7, characterized in that: The liquid feeding pipe connection port and the open slot are formed on the same side end wall of the device body.

12. The bubble screening propeller according to claim 7, 10 or 11, characterized in that: The height of the liquid feeding pipe connection port in the bubble accommodating chamber is relatively lower than that of the open slot.

13. The bubble screening propeller according to claim 7, characterized in that: The connecting opening of the liquid discharge pipe is formed into a tube hole shape.

14. The bubble screening propeller according to claim 6, characterized in that: The pressurizing pipe is connected with the liquid discharge pipe via a three-way element.

15. The bubble screening propeller according to claim 14, characterized in that: The three-way element has a first inlet connected to the discharge pipe, a second inlet connected to the 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.

16. The bubble screening propeller according to claim 6, characterized in that: The pressure pipe is formed by extending from one side of the liquid discharge pipe.

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