CN113804359A - Bubble detection device for preventing air plug from being generated in liquid pipe - Google Patents
Bubble detection device for preventing air plug from being generated in liquid pipe Download PDFInfo
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- CN113804359A CN113804359A CN202010550887.7A CN202010550887A CN113804359A CN 113804359 A CN113804359 A CN 113804359A CN 202010550887 A CN202010550887 A CN 202010550887A CN 113804359 A CN113804359 A CN 113804359A
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- 239000007788 liquid Substances 0.000 title claims abstract description 165
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 230000015572 biosynthetic process Effects 0.000 claims 5
- 238000012216 screening Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 52
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
Abstract
The invention provides a bubble detection device for preventing gas plug from being generated in a liquid pipe, which comprises a gas conduit, a liquid pipe, a bubble screening device and a pressure 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 pressure pipe is communicated with the liquid discharging pipe, the liquid discharging pipe is provided with a bubble sensing element, the bubble accommodating chamber screens bubbles provided by the liquid feeding pipe, an overlarge bubble is decomposed into an excess bubble and a monitoring bubble, the excess bubble flows out of the bubble accommodating chamber, and the monitoring bubble is guided into the liquid discharging pipe to be detected by the bubble sensing element so as to improve the detection accuracy when small-flow gas is discharged.
Description
Technical Field
The invention is applied to the field of leakage gas detection, relates to a bubble detection device for preventing leakage gas from generating a gas plug in a liquid pipe, and further provides the bubble detection device for preventing the gas plug from generating in the liquid pipe.
Background
Generally, industrial plants, such as heat exchangers, boilers, thermal processes, gas or exhaust gas processes, have process gases which are at most a specific pressure and are guided or stored by means of structural elements, such as pipes or chambers.
It is known that industrial equipment with process gas is prone to leakage of process gas after a period of time, which affects the adequacy of the industrial equipment. If the leaked process gas is toxic, it poses a threat to the environment, the health of personnel and even safety. Therefore, the process gases in these industrial facilities must be detected immediately upon leakage to maintain the equipment adequacy, sanitation and public safety.
As is known, in the existing industrial equipment for processing gas, a gas pressure sensor, a gas flow meter, etc. are mostly installed in a gas guiding pipe or a gas storage chamber, etc. to detect whether the processing gas leaks. However, it is difficult to accurately detect the gas leakage at a small flow rate in these prior art techniques.
The applicant has proposed a technique for detecting and detecting the leakage gas by introducing the leakage gas into the liquid pipe to generate bubbles and detecting the amount or volume of the bubbles generated in the liquid; however, when the flow rate of the leaking gas is too small, the thrust of the small flow rate leaking gas in the liquid tube is relatively reduced, so that bubbles generated by the small flow rate leaking gas are easy to accumulate in the liquid tube, and further a gas lock phenomenon is generated, which hinders the propulsion of the bubbles and affects the accuracy of detecting the small flow rate leaking gas, and therefore improvement is needed.
Disclosure of Invention
The purpose of the present invention is to improve the accuracy of the detection when the small flow gas leaks.
To achieve the above objective, a preferred embodiment of the present invention provides a bubble detecting device for preventing air lock from being generated in a liquid tube, so as to improve the accuracy of detecting when a small flow of gas leaks. The technical means comprises the following steps: a gas conduit for conducting leaking gas; a liquid pipe formed by connecting a liquid feeding pipe and a liquid discharging pipe in series, wherein one end of the gas conduit is inserted into the liquid feeding pipe to generate bubbles in the liquid feeding pipe; the bubble screener is provided with a liquid pipe flow channel and a bubble containing chamber inside the screener body, and the two ends of the liquid pipe flow channel are respectively provided with the liquid supply pipe and the liquid discharge pipe which are connected in series; one end of the pressurizing pipe is communicated with the liquid discharge pipe, and the other end of the pressurizing pipe is connected with a driver; the liquid pipe flow passage passes through the bubble containing chamber, the liquid discharge pipe is provided with a bubble sensing element, and the bubble sensing element is positioned between the device body 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 in one side end wall of the bubble accommodating chamber, the bubble accommodating chamber and the open notch jointly screen the bubble volume range of bubbles provided by the liquid supply pipe, an overlarge bubble larger than the bubble volume range is decomposed into an excess bubble and a monitoring bubble, the excess bubble flows out of the liquid pipe flow passage through the open notch, and the monitoring bubble is guided into the liquid discharge pipe through the bubble accommodating chamber to be detected by the bubble sensing element.
In a further implementation, a liquid feeding pipe joint and a liquid discharging pipe joint are respectively formed at the two ends of the liquid pipe flow passage, the liquid feeding pipe joint and the liquid discharging pipe joint are mutually communicated through the bubble accommodating chamber, and different height differences exist between the liquid feeding pipe joint and the liquid discharging pipe joint.
In still further implementations, the liquid supply pipe adapter port is located at a height within the bubble receiving chamber that is relatively lower than the liquid discharge pipe adapter port.
In a further implementation, one end of the liquid feeding pipe is implanted into the bubble accommodating chamber through the liquid feeding pipe joint.
In a further embodiment, the feed tube adapter is formed in the shape of a semicircular tube wall, and the open area of the feed tube adapter is smaller than the open notch.
In a further embodiment, the mouthpiece is formed on the same side end wall of the body as the open slot.
In still further implementations, the level of the feed tube adaptor within the bubble receiving chamber is relatively lower than the open slot.
In still further embodiments, the drain adaptor is formed as a tube bore.
In a further embodiment, the pressure line communicates with the drain line via a tee element.
In a further implementation, the three-way element has a first inlet for connecting the liquid discharge pipe, a second inlet for connecting the pressure pipe and an outlet for discharging liquid, the first inlet and the second inlet are arranged at an included angle greater than 0 degree and less than 180 degrees, and the first inlet and the second inlet are respectively arranged at an included angle greater than 90 degrees and less than or equal to 180 degrees with the outlet.
In a further embodiment, the pressure 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 sight mounted with a charge coupled element.
According to the technical means, the invention has the advantages that: the bubble screening and power drainage technology is combined to promote bubbles generated in the liquid pipe by small-flow leaked gas, so that the phenomenon of gas plug accumulation due to too low pressure in the liquid pipe is avoided, the bubble monitoring device contributes to the propulsion of bubbles in the liquid pipe, and when the gas plug is generated in the liquid pipe carelessly, the gas plug with larger volume can be smoothly screened into monitoring bubbles with proper volume, so that the detection accuracy of the small-flow leaked gas is improved.
The details of the above-described method and apparatus, as well as the details of its implementation in the performance of the method and apparatus, are explained with reference to the following examples and drawings.
Drawings
FIG. 1 is a perspective view of a bubble detecting device for preventing generation of an air lock in a liquid tube according to the present invention.
Fig. 2 is a sectional view of fig. 1.
Fig. 3 to 5 are schematic views illustrating the operation of the bubble detecting device for preventing the generation of air lock in the liquid tube according to the present invention.
Description of reference numerals: 10-bubbles; 11-too large bubbles; 12-excess bubbles; 13-monitoring for bubbles; 20-liquid; 30-a bubble screener; 31-a liquid tube flow channel; 32-a bubble receiving chamber; 33-open notch; 34-liquid feeding pipe joint; 35-drain pipe joint; 40-a gas conduit; a 50-liquid tube; 51-a feed tube; 52-drain pipe; 60-a pressure pipe; 70-a liquid bath; 80-a bubble sensing element; 90-a tee element; 91-a first inlet; 92-a second inlet; 93-outlet.
Detailed Description
First, referring to fig. 1 and fig. 2, an aspect of a preferred embodiment of the present invention is disclosed, which illustrates a bubble detecting apparatus for preventing air lock from being generated in a liquid pipe, comprising a gas conduit 40, a liquid pipe 50, a bubble separator 30 and a pressure pipe 60. Wherein:
the gas guide 40 is used to guide the leakage gas of the industrial equipment, which may be a heat exchange equipment with process gas, a boiler, a heat treatment equipment, a gas equipment or an exhaust gas treatment equipment, etc. As known in the art, in order to prevent the process gas from leaking, a gas conduit 40 for guiding the leaking gas is usually installed at a position where the process gas is likely to leak, such as a guiding pipe for guiding the process gas, a pipe connector of a gas storage chamber, a lid connector, etc., 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 and floating of bubbles. 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 conduit 40 is connected to the liquid feeding pipe 51, so that the gas conduit 40 can guide the leaking gas to generate the bubbles 10 in the liquid 20 of the liquid pipe 50.
The bubble separator 30 has a liquid pipe channel 31 formed inside the separator body, both ends of the liquid pipe channel 31 extend to the surface of the separator body of the bubble separator 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 for connecting a liquid supply pipe 51, the liquid discharge pipe connection port 35 is used for connecting a liquid discharge pipe 52, the liquid supply pipe connection port 34 is made into a semicircular pipe wall shape in practice, and the liquid discharge pipe connection port 35 is made into a pipe hole shape in practice. Further, the liquid supply pipe adapter port 34 and the liquid discharge pipe adapter port 35 have different height differences, and in practice, the liquid supply pipe adapter port 34 is located at a height relatively lower than the liquid discharge pipe adapter port 35 in the bubble accommodating chamber 32.
The bubble separator 30 has a bubble chamber 32 formed therein, and the feed pipe connection port 34 and the drain pipe connection port 35 are communicated with each other via the bubble chamber 32, so that the feed pipe 51 is communicated with the drain pipe 52 via the bubble chamber 32. The body of the bubble separator 30 is further provided with an open notch 33 connected with the bubble accommodating chamber 32 on the end wall forming the liquid feeding pipe joint 34, the height of the open notch 33 in the bubble accommodating chamber 32 is relatively higher than that of the liquid feeding pipe joint 34, and the opening area of the liquid feeding pipe joint 34 is smaller than that of the open notch 33, so that the bubbles 10 can rapidly leave the bubble accommodating chamber 32 through the open notch 33 after entering the bubble accommodating chamber 32 from the liquid feeding pipe 51, and cannot be accumulated in the bubble accommodating chamber to form an air lock phenomenon. In addition, one end of the liquid supply tube 51 is embedded in the bubble accommodating chamber 32, so that the bubbles 10 enter the bubble accommodating chamber and then approach the liquid discharge tube 52, thereby facilitating the entry of part of the bubbles 10 (i.e. monitoring the bubbles 13) into the liquid discharge tube 52.
The pressurizing pipe 60 has one end connected to the drain pipe 52 and the other end connected to a driver (not shown) for driving the liquid 20 in the pressurizing pipe 60 to flow into the drain pipe 52 to drive the liquid 20 in the drain pipe 52, wherein the driver may be a liquid pump. Further, the pressure pipe 60 is connected to the drain pipe 52 through a tee element 90, the tee element 90 has a first inlet 91, a second inlet 92 and an outlet 93, the first inlet 91 is connected to the drain pipe 52, the second inlet 92 is connected to the pressure pipe 60, the outlet 93 is used for draining the liquid 20, an included angle between the first inlet 91 and the second inlet 92 is greater than 0 degree and less than 180 degrees, and an included angle between the first inlet 91 and the second inlet 92 and the outlet 93 is greater than 90 degrees and less than 180 degrees, so that when the liquid 20 in the pressure pipe 60 flows into the drain pipe 52, the liquid 20 in the drain pipe 52 can be smoothly driven to flow to the outlet 93. The pressure 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 sifter 30 and the pressurization pipe 60, so as to monitor whether the bubbles 10 pass through the liquid 20 in the liquid discharge pipe 52 and the size and the number of the bubbles 10. The bubble sensor 80 may be an ultrasonic sensor or a visual device with a Charge Coupled Device (CCD), and the bubble sensor 80 can be easily mounted on the drain pipe 52 by assembling means such as locking, adhering or fastening. When the bubble detecting element 80 is an ultrasonic sensor, the drainage tube 52 may be transparent or opaque; the ultrasonic sensor can detect the bubble 10 in the liquid 20 in the liquid discharge pipe 52 by means of the generated ultrasonic waves through the transparent or opaque liquid discharge pipe 52. Further, when bubble sensing element 80 is a sight, drain 52 must be transparent to provide a sight through which bubbles 10 within liquid 20 of drain 52 can be seen through via transparent drain 52.
Referring to fig. 3 to 5, the operation of the present invention is sequentially illustrated, in which the liquid 20 in the pressure pipe 60 is driven by the driver to flow into the liquid discharge pipe 52, and the liquid 20 in the liquid discharge pipe 52 is driven 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 are driven by the liquid 20 to flow from the liquid supply pipe 51 to the bubble accommodating chamber 32 (as shown in fig. 3), wherein the bubbles 11 include the excessive bubbles 11 accumulated in the liquid supply pipe 51, and the volume of the excessive bubbles 11 is larger than the preset bubble volume range.
When the excessive bubbles 11 enter the bubble accommodating chamber 32 through the liquid feeding pipe 51 (as shown in fig. 4), the excessive bubbles 11 float upward, and during the floating, the excessive bubbles 11 are decomposed into the excessive bubbles 12 and the monitoring bubbles 13, the bubble volume of the excessive bubbles 12 is larger than that of the monitoring bubbles 13, and the excessive bubbles 12 are discharged out of the bubble accommodating chamber 32 through the opening notch 33 and enter the liquid tank 70 due to the buoyancy thereof.
Since the bubble volume of the monitoring bubbles 13 is smaller than the excess bubbles 12, that is, the monitoring bubbles 13 have a buoyancy smaller than the excess bubbles 12, when the liquid 20 in the drain pipe 52 is driven by the pressurizing pipe 60 to flow, the inside of the drain pipe 52 is brought into a negative pressure state, and the monitoring bubbles 13 having a smaller buoyancy are sucked into the drain pipe 52 (as shown in fig. 5), so as to screen the bubble volume, and the size and the number of the monitoring bubbles 13 are monitored by the bubble sensing element 80 when the monitoring bubbles 13 pass through the bubble sensing element 80 via the drain pipe 52.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated 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 (10)
1. A bubble detecting device for preventing generation of a gas plug in a liquid pipe, comprising:
a gas conduit for conducting leaking gas;
a liquid pipe formed by connecting a liquid feeding pipe and a liquid discharging pipe in series, wherein one end of the gas conduit is inserted into the liquid feeding pipe to generate bubbles in the liquid feeding pipe;
the bubble screener is provided with a liquid pipe flow channel and a bubble containing chamber inside the screener body, and the two ends of the liquid pipe flow channel are respectively provided with the liquid supply pipe and the liquid discharge pipe which are connected in series;
one end of the pressurizing pipe is communicated with the liquid discharge pipe, and the other end of the pressurizing pipe is connected with a driver;
the liquid pipe flow passage passes through the bubble containing chamber, the liquid discharge pipe is provided with a bubble sensing element, and the bubble sensing element is positioned between the body of the bubble screen 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 in one side end wall of the bubble accommodating chamber, the bubble accommodating chamber and the open notch jointly screen the bubble volume range of bubbles provided by the liquid supply pipe, an overlarge bubble larger than the bubble volume range is decomposed into an excess bubble and a monitoring bubble, the excess bubble flows out of the liquid pipe flow passage through the open notch, 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 detecting device for preventing the generation of the air lock in the liquid pipe according to claim 1, wherein: the liquid pipe flow passage has two ends with one liquid feeding pipe joint and one liquid draining pipe joint connected separately, and the liquid feeding pipe joint and the liquid draining pipe joint are communicated via the bubble holding chamber and have different height difference.
3. A bubble detection apparatus for preventing the formation of an air lock in a liquid line according to claim 2, wherein: the height of the liquid supply pipe joint in the bubble containing chamber is relatively lower than that of the liquid discharge pipe joint.
4. A bubble detection apparatus for preventing the formation of an air lock in a liquid line according to claim 2, wherein: one end of the liquid feeding pipe is implanted into the bubble accommodating chamber through the liquid feeding pipe joint.
5. A bubble detection apparatus for preventing the formation of an air lock in a liquid line according to claim 2, wherein: the liquid feeding pipe joint is made into a semicircular pipe wall shape, and the opening area of the liquid feeding pipe joint is smaller than that of the opening notch.
6. A bubble detection apparatus for preventing the formation of an air lock in a liquid line according to claim 2, wherein: the liquid feeding pipe joint and the open notch are formed on the same side end wall of the device body.
7. The bubble detecting device for preventing generation of an air lock in a liquid pipe according to claim 2, 5 or 6, wherein: the height of the liquid feeding pipe joint in the bubble containing chamber is relatively lower than the open notch.
8. A bubble detection apparatus for preventing the formation of an air lock in a liquid line according to claim 2, wherein: the joint of the liquid discharge pipe is made into a pipe hole shape.
9. The bubble detecting device for preventing the generation of the air lock in the liquid pipe according to claim 1, wherein: the pressure pipe and the liquid discharge pipe are communicated through a tee joint element.
10. The bubble detecting device for preventing the generation of the air lock in the liquid pipe according to claim 8, wherein: the tee joint element is provided with a first inlet, a second inlet and an outlet, wherein the first inlet is communicated with the liquid discharge pipe, the second inlet is communicated with the pressure pipe, the outlet is used for discharging liquid, an included angle between the first inlet and the second inlet is larger than 0 degree and smaller than 180 degrees, and included angles between the first inlet and the second inlet and the outlet are larger than 90 degrees and smaller than or equal to 180 degrees respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW109119627 | 2020-06-11 | ||
| TW109119627A TWI718963B (en) | 2020-06-11 | 2020-06-11 | Air bubble detection device for preventing air plugs in liquid pipe |
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| Publication Number | Publication Date |
|---|---|
| CN113804359A true CN113804359A (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010550887.7A Pending CN113804359A (en) | 2020-06-11 | 2020-06-16 | Bubble detection device for preventing air plug from being generated in liquid pipe |
| CN202021117810.2U Active CN212693154U (en) | 2020-06-11 | 2020-06-16 | Bubble detection device for preventing air plug from being generated in liquid pipe |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021117810.2U Active CN212693154U (en) | 2020-06-11 | 2020-06-16 | Bubble detection device for preventing air plug from being generated in liquid pipe |
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| CN (2) | CN113804359A (en) |
| TW (1) | TWI718963B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390271B (en) * | 2014-11-18 | 2017-02-22 | 杭州电子科技大学 | Air purification device adopting plasma discharge combined with modified molecular sieve and using method thereof |
| CN204907422U (en) * | 2015-07-27 | 2015-12-30 | 黄文义 | Agricultural irrigation device |
| CN205832287U (en) * | 2016-06-03 | 2016-12-28 | 江西科伦医疗器械制造有限公司 | A kind of novel have automatic aerofluxus and stop the dropping funnel of liquid function |
| CN209996863U (en) * | 2019-04-30 | 2020-01-31 | 重庆琪美斯医疗设备有限公司 | negative pressure drainage device |
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2020
- 2020-06-11 TW TW109119627A patent/TWI718963B/en active
- 2020-06-16 CN CN202010550887.7A patent/CN113804359A/en active Pending
- 2020-06-16 CN CN202021117810.2U patent/CN212693154U/en active Active
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| Publication number | Publication date |
|---|---|
| CN212693154U (en) | 2021-03-12 |
| TWI718963B (en) | 2021-02-11 |
| TW202146872A (en) | 2021-12-16 |
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