CN214861298U - Negative pressure sewage discharge system - Google Patents
Negative pressure sewage discharge system Download PDFInfo
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- CN214861298U CN214861298U CN202120568324.0U CN202120568324U CN214861298U CN 214861298 U CN214861298 U CN 214861298U CN 202120568324 U CN202120568324 U CN 202120568324U CN 214861298 U CN214861298 U CN 214861298U
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- Prior art keywords
- negative pressure
- pipe
- liquid
- condensate tank
- hand valve
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- 239000010865 sewage Substances 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 76
- 239000003595 mist Substances 0.000 claims abstract description 9
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 5
- 239000012855 volatile organic compound Substances 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 241000521257 Hydrops Species 0.000 abstract description 3
- 206010030113 Oedema Diseases 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 37
- 238000007599 discharging Methods 0.000 description 7
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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- Sewage (AREA)
Abstract
The utility model relates to a negative pressure sewage disposal system, which belongs to the technical field of VOCs collection and treatment in chemical plants; comprises a negative pressure condensate tank, a liquid bag, an overflow pipe and a blow-off pipe; the negative pressure condensate tank is provided with an air inlet and an air outlet and is connected with the existing air pipe pipeline, a mist catcher is arranged inside the negative pressure condensate tank and is positioned between the air inlet and the air outlet, the lower end face of the negative pressure condensate tank is provided with a liquid outlet pipeline, the liquid bag is of a cylindrical structure with an opening at the upper end, the upper end is a liquid inlet, the liquid outlet pipeline is connected with the liquid inlet, the lower end of the liquid bag is provided with a straight-line pipe, a first hand valve and a second hand valve are arranged on the straight-line pipe from top to bottom, the lower end of an overflow pipe is connected with the straight-line pipe through a pipeline, the connection position of the overflow pipe and the straight-line pipe is positioned between the first hand valve and the second hand valve, and the upper end of the overflow pipe is communicated with a blow-off pipe through a pipeline; the problem of present VOC collect with the in-process of handling the hydrops and consume a large amount of manual works and pollute the atmosphere easily is solved.
Description
Technical Field
The utility model belongs to the technical field of the VOCs of chemical plant is collected and is handled, concretely relates to negative pressure sewage discharge system.
Background
Under the condition of increasingly strict environmental protection requirements, the collection and treatment of VOCs discharged by a breather valve in a tank field of a chemical plant are gradually expanded.
In the process of collecting and treating the VOC in the tank area, the dispersed VOCs gas discharged from the breather valve needs to be collected through a pipeline or an air pipe negative pressure system and collected for centralized treatment. The collected gas contains a large amount of saturated water, and accumulated liquid in a pipeline or an air pipe can be formed, so that the safe operation of equipment is influenced. The traditional method is to arrange a pilot shower valve, and the pilot shower valve is manually discharged by an operator at regular intervals. A large amount of manpower is consumed to ensure the safe operation of the equipment.
The air in the pipeline and the air duct is inevitably exchanged when the air in the pipeline and the air duct is manually exhausted. The release of VOCs substances inevitably occurs, and the atmosphere is polluted.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art and provides a negative pressure sewage draining system; the problem of present VOC collect with the in-process of handling the hydrops and consume a large amount of manual works and pollute the atmosphere easily is solved.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
A negative pressure sewage discharging system comprises a negative pressure condensate tank, a liquid bag, a first hand valve, a second hand valve, an overflow pipe and a sewage discharging pipe; the negative pressure condensate tank is of a tank body structure and is provided with an air inlet and an air outlet, the air inlet is connected with an air outlet pipeline of an existing air pipe, the air outlet is connected with an air inlet pipeline of the existing air pipe, a mist catcher is arranged at the upper end inside the negative pressure condensate tank and divides the inside of the negative pressure condensate tank into an upper space and a lower space, the air inlet is communicated with the lower space, the air outlet is communicated with the upper space, a liquid outlet pipeline is arranged on the lower end face of the negative pressure condensate tank, the liquid bag is of a cylindrical structure with an open upper end, the upper end of the liquid bag is a liquid inlet, the liquid outlet pipeline is connected with a liquid inlet, a straight vent pipe is also vertically arranged at the lower end of the liquid bag and is communicated with the inside of the liquid bag, a first hand valve and a second hand valve are sequentially arranged on the straight vent pipe from top to bottom, and the overflow pipe is vertically arranged on one side of the liquid bag, the lower extreme of overflow pipe is connected with the direct vent through one section horizontal pipeline, the junction of overflow pipe and direct vent is located between first hand valve and the second hand valve, the blow off pipe is vertical to be set up in one side of overflow pipe, the upper end of overflow pipe is linked together through one section horizontal pipeline and blow off pipe.
Further, the air inlet is arranged on the side face of the negative pressure condensate tank, and the air outlet is arranged on the upper end face of the negative pressure condensate tank.
Further, the inner diameter of the liquid inlet is equal to the inner diameter of the liquid outlet pipeline.
Further, the lower end of the straight drainage pipe is communicated with a sewage collecting device.
Furthermore, the upper end of the overflow pipe is fixed with the liquid bag through a fixing device.
Furthermore, the blow-off pipe also comprises a horizontal section at the uppermost end, the horizontal section is of a closed structure, and a breathing hole is formed in the upper end of the horizontal section.
Furthermore, the lower end of the drain pipe is provided with a drain outlet for guiding the condensate into an underground drainage system.
The utility model discloses produced beneficial effect for prior art does:
(1) the utility model provides a drainage has practiced thrift the schedule operation of schedule chemical plant operating personnel periodic discharge pipeline and the inside hydrops of tuber pipe. A large amount of labor is saved.
(2) The utility model provides a sewage discharging system has set up the condensate tank and has caught the fog board, has strengthened the inside cleaning ability to liquid of pipeline and tuber pipe, has reduced the setting of row's stain, has reduced the requirement to secret blowdown pipe network.
(3) The utility model provides a sewage system utilizes the inside lime set of liquid package and overflow pipe to form the water seal and has kept apart inside and the ambient air of tuber pipe, the better release that has reduced the VOCs material prevents to pollute the atmosphere.
Drawings
The invention will be described in further detail with reference to the accompanying drawings:
fig. 1 is a schematic structural view of the whole of the present invention;
wherein, 1 is a mist catcher, 2 is a negative pressure condensate tank, 3 is a liquid bag, 4 is a first hand valve, 5 is a second hand valve, 6 is a breathing hole, 7 is an overflow pipe, 8 is a blow-off pipe, 9 is an air inlet, and 10 is an air outlet.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in figure 1, the utility model provides a negative pressure sewage system, including negative pressure condensate tank 2, liquid package 3, first hand valve 4, second hand valve 5, overflow pipe 7, blow off pipe 8.
The negative pressure condensate tank 2 is of a tank body structure, is internally of a hollow structure and is arranged on the existing air pipe for discharging VOCs gas. The negative pressure condensate tank 2 is characterized in that an air inlet 9 is formed in the side face of the negative pressure condensate tank 2, an air outlet 10 is formed in the upper end face of the negative pressure condensate tank, the air inlet 9 is connected with an air outlet pipeline of an existing air pipe, and the air outlet 10 is connected with an air inlet pipeline of the existing air pipe. The gas output from the air outlet pipeline of the air pipe enters the negative pressure condensate tank 2 through the air inlet 9, then is output to the air inlet pipeline of the air pipe from the air outlet 10, and is finally discharged from the air inlet pipeline.
The upper end in the negative pressure condensate tank 2 is provided with a mist catcher 1, the mist catcher 1 divides the interior of the negative pressure condensate tank 2 into an upper space and a lower space, and after the gas entering the interior of the negative pressure condensate tank 2 passes through the mist catcher 1, the mist catcher 1 catches large, medium and small-diameter liquid drops in the gas and flows down from the side wall of the negative pressure condensate tank 2.
The lower end face of the negative pressure condensate tank 2 is provided with a liquid outlet pipeline, and liquid drops flowing down from the side wall of the negative pressure condensate tank 2 flow out from the liquid outlet pipeline.
The liquid bag 3 is of a cylindrical structure with an opening at the upper end, the upper end is a liquid inlet, the inner diameter of the liquid inlet is equal to that of the liquid outlet pipeline, and the liquid outlet pipeline is connected with the liquid inlet through bolts, so that liquid drops coming out of the liquid outlet pipeline can directly enter the liquid bag 3 from the liquid inlet.
The lower end of the liquid bag 3 is also vertically provided with a straight drainage pipe which is communicated with the inside of the liquid bag 3. The direct discharging pipe is sequentially provided with a first hand valve 4 and a second hand valve 5 from top to bottom and used for controlling whether liquid in the direct discharging pipe circulates or not. The lower end of the straight-line pipe is communicated with a sewage collecting device, and sewage and sundries discharged through the lower end of the straight-line pipe can directly enter a sewage collecting pipeline and are finally discharged.
The overflow pipe 7 is vertically arranged on one side of the liquid bag 3, the lower end of the overflow pipe 7 is connected with the straight-line pipe through a section of horizontal pipeline, the joint of the overflow pipe and the straight-line pipe is located between the first hand valve 4 and the second hand valve 5, and the upper end of the overflow pipe 7 is fixed with the liquid bag 3 through a fixing device.
The drain pipe 8 is vertically arranged on one side of the overflow pipe 7, and the upper end of the overflow pipe 7 is communicated with the drain pipe 8 through a section of horizontal pipeline. The blow-off pipe 8 also comprises a horizontal section at the uppermost end, the horizontal section is of a closed structure, and the upper end is provided with a breathing hole 6. The lower end of the drain pipe 8 is a drain outlet for leading the condensate into an underground drainage system. The lower end of the sewage draining pipe 8 is fixed with the overflow pipe 7 through a fixing device.
The utility model discloses a theory of operation does:
when the whole set of system is in the adaptation stage of starting, in order to prevent the inside unclean of sweeping of system, open first hand valve 4 and second hand valve 5 simultaneously, will deposit in the inside sewage and the debris of liquid package 3 and discharge through the direct vent, guarantee the cleanliness factor of the inside environment of liquid package.
After the system spent starts the adaptation stage, get into negative pressure operation earlier stage, the negative pressure is great this moment, and external pressure is greater than the pressure of liquid package 3 inside, leads to the liquid backward flow in the inline easily, causes the outside air to get into the liquid package, causes the inside and external gas exchange of tuber pipe, and the VOCs material in the tuber pipe will release external environment like this, the polluted atmosphere. Therefore, the first hand valve 4 and the second hand valve 5 are closed, and the communication channel between the liquid bag 3 and the external environment is cut off, so that gas exchange is prevented.
When the system passes through the period of the negative pressure operation, the negative pressure operation normal working condition is entered, the negative pressure inside the liquid bag is smaller at the moment, the first hand valve 4 is opened, the second hand valve 5 is kept closed, the liquid in the liquid bag 3 forms a first liquid level height, the liquid in the overflow pipe 7 forms a second liquid level height, the liquid drops in the negative pressure condensate tank 2 continuously enter the liquid bag 3, the first liquid level height continuously rises, when the height difference between the first liquid level height and the second liquid level height is larger than the negative pressure limit value of the negative pressure system, the liquid in the overflow pipe 7 continuously enters the drain pipe 8 and is discharged from the lower end of the drain pipe 8, the stable state is entered at the moment, the condensate in the negative pressure condensate tank 2 continuously enters the liquid bag 3 and is automatically discharged into the underground drain system through the overflow pipe 7 and the drain pipe 8, and the function of automatically discharging the condensate is realized.
The horizontal segment at the upper end of the blow-off pipe 8 is provided with a breathing hole 6, so that when the condensate is suddenly stopped in the negative pressure condensate tank 2, the condensate in the blow-off pipe 8 is prevented from suddenly flowing back, and the exchange of the internal gas and the external gas is caused to occur.
When the system is required to be overhauled, the first hand valve 4 and the second hand valve 5 are opened, sewage or sundries in the liquid bag 3 are drained, and the normal operation of overhauling work is guaranteed.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. A negative pressure sewage system is characterized in that: comprises a negative pressure condensate tank (2), a liquid bag (3), a first hand valve (4), a second hand valve (5), an overflow pipe (7) and a blow-off pipe (8); the negative pressure condensate tank (2) is of a tank body structure and is provided with an air inlet (9) and an air outlet (10), the air inlet (9) is connected with an air outlet pipeline of an existing air pipe, the air outlet (10) is connected with an air inlet pipeline of the existing air pipe, the upper end inside the negative pressure condensate tank (2) is provided with a mist catcher (1), the mist catcher (1) divides the inside of the negative pressure condensate tank (2) into an upper space and a lower space, the air inlet (9) is communicated with the lower space, the air outlet (10) is communicated with the upper space, the lower end face of the negative pressure condensate tank (2) is provided with a liquid outlet pipeline, the liquid bag (3) is of a cylindrical structure with an opening at the upper end, the upper end is a liquid inlet, the liquid outlet pipeline is connected with the liquid inlet, and the lower end of the liquid bag (3) is also vertically provided with a straight discharge pipe, the direct vent is linked together with liquid package (3) inside, has set gradually first hand valve (4) and second hand valve (5) down on the direct vent from last, overflow pipe (7) are vertical to be set up in one side of liquid package (3), and the lower extreme of overflow pipe (7) is connected with the direct vent through one section horizontal line, overflow pipe (7) are located between first hand valve (4) and second hand valve (5) with the junction of direct vent, blow off pipe (8) are vertical to be set up in one side of overflow pipe (7), the upper end of overflow pipe (7) is linked together with blow off pipe (8) through one section horizontal line.
2. A negative pressure sewer system according to claim 1, characterized in that: the air inlet (9) is arranged on the side face of the negative pressure condensate tank (2), and the air outlet (10) is arranged on the upper end face of the negative pressure condensate tank (2).
3. A negative pressure sewer system according to claim 1, characterized in that: the inner diameter of the liquid inlet is equal to the inner diameter of the liquid outlet pipeline.
4. A negative pressure sewer system according to claim 1, characterized in that: the lower end of the straight drainage pipe is communicated with a sewage collecting device.
5. A negative pressure sewer system according to claim 1, characterized in that: the upper end of the overflow pipe (7) is fixed with the liquid bag (3) through a fixing device.
6. A negative pressure sewer system according to claim 1, characterized in that: the blow-off pipe (8) also comprises a horizontal section at the uppermost end, the horizontal section is of a closed structure, and a breathing hole (6) is formed in the upper end of the horizontal section.
7. A negative pressure sewer system according to claim 1, characterized in that: the lower end of the drain pipe (8) is a drain outlet for leading the condensate into an underground drainage system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120568324.0U CN214861298U (en) | 2021-03-19 | 2021-03-19 | Negative pressure sewage discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120568324.0U CN214861298U (en) | 2021-03-19 | 2021-03-19 | Negative pressure sewage discharge system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214861298U true CN214861298U (en) | 2021-11-26 |
Family
ID=79037348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120568324.0U Expired - Fee Related CN214861298U (en) | 2021-03-19 | 2021-03-19 | Negative pressure sewage discharge system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214861298U (en) |
-
2021
- 2021-03-19 CN CN202120568324.0U patent/CN214861298U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211126 |