CA1208571A - Drip trap - Google Patents
Drip trapInfo
- Publication number
- CA1208571A CA1208571A CA000450272A CA450272A CA1208571A CA 1208571 A CA1208571 A CA 1208571A CA 000450272 A CA000450272 A CA 000450272A CA 450272 A CA450272 A CA 450272A CA 1208571 A CA1208571 A CA 1208571A
- Authority
- CA
- Canada
- Prior art keywords
- casing
- liquid
- gas
- outlet
- downspout
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 238000013022 venting Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- 239000000203 mixture Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/09—Air conditioning, e.g. de-watering, in pneumatic systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A drip trap for separating a liquid from a gas includes a casing, an inlet duct near the top end of the casing for introducing a liquid-containing gas into the casing, a downspout on the inner end of the inlet duct extending downwardly into the casing, an outlet duct in the casing beneath the bottom end of the downspout for discharging liquid from the casing, and a four-way two port valve for connecting either the inlet duct to a gas line for receiving liquid-containing gas or the outlet duct to a drain for discharging liquid from the casing.
The liquid-containing gas is fed into the casing until the liquid rises above the bottom of the downspout to compress gas in the top end of the casing. The valve is rotated to close the inlet duct and open the outlet duct to the drain, whereby liquid is discharged from the casing.
The trapped gas provides the driving pressure for discharging the liquid and positive prevention of continuous venting of manifold gas vapours through the trap to atmosphere. The invention further provides a method of lifting the liquid to enable gravity run to sewer line.
A drip trap for separating a liquid from a gas includes a casing, an inlet duct near the top end of the casing for introducing a liquid-containing gas into the casing, a downspout on the inner end of the inlet duct extending downwardly into the casing, an outlet duct in the casing beneath the bottom end of the downspout for discharging liquid from the casing, and a four-way two port valve for connecting either the inlet duct to a gas line for receiving liquid-containing gas or the outlet duct to a drain for discharging liquid from the casing.
The liquid-containing gas is fed into the casing until the liquid rises above the bottom of the downspout to compress gas in the top end of the casing. The valve is rotated to close the inlet duct and open the outlet duct to the drain, whereby liquid is discharged from the casing.
The trapped gas provides the driving pressure for discharging the liquid and positive prevention of continuous venting of manifold gas vapours through the trap to atmosphere. The invention further provides a method of lifting the liquid to enable gravity run to sewer line.
Description
12~8571 This invention relates to a drip trap and in particular to a high pressure drip trap for removing liquids from gas lines.
The d~vice of the present invention can be used indoors or outdoors. The primary indoor use is in sewage treatment plants. A drip trap must separate liquid from gas while ensuring that gas does not enter and leave the trap simultaneously. This is usually accomplished in conventional gravity operated traps, by providing a single control for opening a liquid drain while closing the gas/liquid inlet.
There still exists a need for a drip trap which effectively separates a liquid from a gas. The object of the present invention is to meet such need by providing a relatively simple drip trap which utilizes gas pressure for successful operation, has the ability to lift trapped liquid for gravity transportat;on to a drain and eliminate an open gas path to atmosphere.
Accordingly the present invention relates to a drip trap for separating a liquid from a gas, comprising casing means; inlet means in the top end of said casing means for introducing a liquid-containing gas into said casing means, downspout means on said inlet means extending downwardly in said casing means; outlet means in said casing means below said inlet means and downspout means for discharging liquid from said casing means; and valve means connected to said inlet means and said outlet means, in one position said valve means permitting the entry of liquid-containing gas into said casing means while preventing the escape of liquid through said outlet means, and in a second position said valve means closing said inlet means while opening said outlet means to permit lZ0857~
the discharge of liquid under pressure from said gas after the liquid has risen to a level above the lower end of said downspout means.
The invention will now be described in detail with reference to the commpanying drawing, the single figure of which is a partly sectioned side elevation view of a preferred embodiment of the invention.
With reference to the drawing, a drip trap in accordance with the invention includes a tubular casing 1~ with an open top end 2 and a closed bottom end 3. A radially extending flange 4 is provided on the top end 2 of the casing for supporting an annular gasket 5 and a cover 6. The cover 6 is secured to the casing 1 by bolts 7 and nuts 8. The cover 6 enables inspection of the interior of the casing 1. The flanged top end 2 of the casing 1 also permits the lengthening of the casing by the addition of flanged tubular pipe sections (not shown).
The casing 1 is mounted on a stand defined by a pipe section 10 with an open top end 11 welded to the bottom end 3 of the casing and a circular bottom plate 12 supporting the pipe section 10 and the casing 1. A drain outlet 13 extends downwardly from the centre of the bottom 3 of the casing 1 and outwardly through the pipe section 10. The outlet 13 is normally closed by a cap 1~.
The d~vice of the present invention can be used indoors or outdoors. The primary indoor use is in sewage treatment plants. A drip trap must separate liquid from gas while ensuring that gas does not enter and leave the trap simultaneously. This is usually accomplished in conventional gravity operated traps, by providing a single control for opening a liquid drain while closing the gas/liquid inlet.
There still exists a need for a drip trap which effectively separates a liquid from a gas. The object of the present invention is to meet such need by providing a relatively simple drip trap which utilizes gas pressure for successful operation, has the ability to lift trapped liquid for gravity transportat;on to a drain and eliminate an open gas path to atmosphere.
Accordingly the present invention relates to a drip trap for separating a liquid from a gas, comprising casing means; inlet means in the top end of said casing means for introducing a liquid-containing gas into said casing means, downspout means on said inlet means extending downwardly in said casing means; outlet means in said casing means below said inlet means and downspout means for discharging liquid from said casing means; and valve means connected to said inlet means and said outlet means, in one position said valve means permitting the entry of liquid-containing gas into said casing means while preventing the escape of liquid through said outlet means, and in a second position said valve means closing said inlet means while opening said outlet means to permit lZ0857~
the discharge of liquid under pressure from said gas after the liquid has risen to a level above the lower end of said downspout means.
The invention will now be described in detail with reference to the commpanying drawing, the single figure of which is a partly sectioned side elevation view of a preferred embodiment of the invention.
With reference to the drawing, a drip trap in accordance with the invention includes a tubular casing 1~ with an open top end 2 and a closed bottom end 3. A radially extending flange 4 is provided on the top end 2 of the casing for supporting an annular gasket 5 and a cover 6. The cover 6 is secured to the casing 1 by bolts 7 and nuts 8. The cover 6 enables inspection of the interior of the casing 1. The flanged top end 2 of the casing 1 also permits the lengthening of the casing by the addition of flanged tubular pipe sections (not shown).
The casing 1 is mounted on a stand defined by a pipe section 10 with an open top end 11 welded to the bottom end 3 of the casing and a circular bottom plate 12 supporting the pipe section 10 and the casing 1. A drain outlet 13 extends downwardly from the centre of the bottom 3 of the casing 1 and outwardly through the pipe section 10. The outlet 13 is normally closed by a cap 1~.
2~ Gas containlng a liquid is introduced into the casing 1 through a pipe 15, a four-way two port 90 degree turn valve 16, and an inlet duct 17. A downspout 18 is provided on the inner end of the inlet duct 17. Liquld is discharged from the casing 1 through an outlet duct 20, the valve 16 and a drain pipe 21. The outlet duct 20 also includes a downspout 22 on the inner end thereof. The valve 16 is manually operated 120~571 by a lever 24. The valve 16 can be rotated 90 degrees to connect either pipe 15 to the inlet duct 17, or the outlet duct 20 to the drain pipe 21.
In operation a pressurized gas/liquid mixture enters the casing 1 through the pipe 15, the valve 16 and the inlet duct 17. The mixture is essentially two phase, with the gas and liquid separate.
There is a slight, insignificant breakout of gases entrained in the liquid. As liquid enters the casing 1, the gas enters and leaves the casing freely until the liquid reaches the height of the downspout 18.
Any gas in the casing 1 is trapped above the liquid as the liquid starts to fill the ;nlet duct 17 back to the valve 16. The trapped gas provides the driving pressure for draining the liquid from the casing 1. When the valve lever 24 is rotated 90 degrees the inlet duct 17 is closed to the pipe 15 and the outlet duct 20 is opened to the drain pipe 21. The liquid is pushed out of the casing 1 through the duct 20 by the gas trapped in the casing. Only a small amount of gas is used as the driving medium for forcing liquid from the casing 1. Thus, gas cannot short circuit through the casing 1 and discharge through the drain pipe 21.
In operation a pressurized gas/liquid mixture enters the casing 1 through the pipe 15, the valve 16 and the inlet duct 17. The mixture is essentially two phase, with the gas and liquid separate.
There is a slight, insignificant breakout of gases entrained in the liquid. As liquid enters the casing 1, the gas enters and leaves the casing freely until the liquid reaches the height of the downspout 18.
Any gas in the casing 1 is trapped above the liquid as the liquid starts to fill the ;nlet duct 17 back to the valve 16. The trapped gas provides the driving pressure for draining the liquid from the casing 1. When the valve lever 24 is rotated 90 degrees the inlet duct 17 is closed to the pipe 15 and the outlet duct 20 is opened to the drain pipe 21. The liquid is pushed out of the casing 1 through the duct 20 by the gas trapped in the casing. Only a small amount of gas is used as the driving medium for forcing liquid from the casing 1. Thus, gas cannot short circuit through the casing 1 and discharge through the drain pipe 21.
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A drip trap for separating a liquid from a gas, comprising casing means; inlet means in the top end of said casing means for introducing a liquid-containing gas into said means; downspout means on said inlet means extending downwardly in said casing means; outlet means in said casing means below said inlet means and downspout means for discharg-ing liquid from said casing means; and valve means connected to said inlet means and said outlet means, in one position said valve means permitting the entry of liquid-containing gas into said casing means while preventing the escape of liquid through said outlet means and in a second position said valve means closing said inlet means while opening said outlet means to permit the discharge of liquid under pressure from said gas after the liquid has risen to a level above the lower end of said downspout means.
2. A drip trap according to Claim 1 wherein said valve means is a four-way two-port valve for alternately connecting said inlet means to a source of liquid-containing gas and the outlet means to a drain.
3. A drip trap according to Claim 1 including a normally closed drain outlet in the bottom of said casing means beneath said outlet means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000450272A CA1208571A (en) | 1984-03-22 | 1984-03-22 | Drip trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000450272A CA1208571A (en) | 1984-03-22 | 1984-03-22 | Drip trap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1208571A true CA1208571A (en) | 1986-07-29 |
Family
ID=4127479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000450272A Expired CA1208571A (en) | 1984-03-22 | 1984-03-22 | Drip trap |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1208571A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664816A (en) * | 2020-12-16 | 2021-04-16 | 张瑞芹 | Waterproof protection device for gas pipeline |
-
1984
- 1984-03-22 CA CA000450272A patent/CA1208571A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664816A (en) * | 2020-12-16 | 2021-04-16 | 张瑞芹 | Waterproof protection device for gas pipeline |
| CN112664816B (en) * | 2020-12-16 | 2022-06-03 | 来凤安瑞能源有限公司 | Waterproof protection device for gas pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |