CN106555934A - gas drainage system - Google Patents
gas drainage system Download PDFInfo
- Publication number
- CN106555934A CN106555934A CN201710010824.0A CN201710010824A CN106555934A CN 106555934 A CN106555934 A CN 106555934A CN 201710010824 A CN201710010824 A CN 201710010824A CN 106555934 A CN106555934 A CN 106555934A
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- CN
- China
- Prior art keywords
- water
- level
- controller
- butterfly valve
- electric butterfly
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/14—Arrangements for supervising or controlling working operations for eliminating water
Abstract
The present invention discloses a kind of gas drainage system, and the water-level control apparatus being fixedly connected are arranged including the top water storage device connected with gas piping and with the top water storage；The top water storage device includes the condensate collector and the condensed water memory connected with the condensate collector lower end that upper end connected with the gas piping；The condensed water memory bottom is provided with delivery port；The delivery port is provided with electric butterfly valve；The water-level control apparatus are connected with electric butterfly valve communication；The water-level control apparatus are used for sensed water level and control the opening and closing of the electric butterfly valve；Gas drainage system of the present invention, simple structure, easy construction, and whole gas drainage system need not supplement new water incessantly, make metallurgical works coal gas draining stably safety.
Description
Technical field
The present invention relates to a kind of gas drainage system.
Background technology
In smelter, in the operation such as ironmaking, steel-making, coking and steel rolling, need to reclaim and use substantial amounts of coal gas, bag
Include blast furnace gas, coal gas of converter and coke-stove gas.Various gas pipings constitute complicated gas pipe net system.Generally, coal
Feed channel is accomplished by arranging coal gas drainer at a certain distance, for discharging the condensed water of gas piping.
Coal gas drainer group of the conventional coal gas drainer by top hand sluice valve, bottom hand sluice valve and prefabrication
Into.The principle of the type water trap is U-shaped water seal, seals coal gas by certain water level.Generally need incessantly to water trap
, to ensure the water level in coal gas drainer, there is the potential safety hazard that coal gas punctures water seal in water trap in middle injection make-up water.
The content of the invention
For the problems referred to above, the present invention provides a kind of Auto-drainage, without make-up water and the coal gas draining system of stable safety
System.
To reach above-mentioned purpose, a kind of gas drainage system of the invention, including the top water storage dress connected with gas piping
Put and arrange with the top water storage water-level control apparatus being fixedly connected；
The top water storage device include the condensate collector that upper end connected with the gas piping and with the condensation
The condensed water memory of water collector lower end connection；The condensed water memory bottom is provided with delivery port；The delivery port sets
It is equipped with electric butterfly valve；The water-level control apparatus are connected with electric butterfly valve communication；The water-level control apparatus are used to detect
Water level simultaneously controls the opening and closing of the electric butterfly valve.
Preferably, the condensate collector is the collection hyponome that two heavy caliber ends are connected with gas piping bottom；Institute
State the U-tube road that condensed water memory is that collection hyponome small-caliber end described with two is connected；
The water-level control apparatus include level switch and the controller being fixedly connected on the U-shaped inner-walls of duct；
The communication connection of the level switch, controller and the electric butterfly valve；
The water level thread detector is used for sensed water level height and sensed water level signal is passed to controller；
The controller is used for the water level signal basis and high-water line for receiving and comparing the level switch transmission
Setting value and low water line setting value comparison result control the opening and closing of the electric butterfly valve；
What the electric butterfly valve was used to receiving the controller opens or closes signal opening or close signal according to controller
Automatically open up or close.
Preferably, also include the drainage pipeline that upper end is connected with the electric butterfly valve, under the drainage pipeline lower end connection
Portion's water storage device, the drainage pipeline bottom are provided with valve protection device；The bottom water storage device is for storing coal gas
The gutter of pipe drainage or tank.
Preferably, the nominal diameter in the U-tube road is calculated according to gas piping hour displacement.
Preferably, the condensate collector is the collection hyponome that two heavy caliber ends are connected with gas piping bottom；Institute
State the U-tube road that condensed water memory is that collection hyponome small-caliber end described with two is connected；Under the horizontal segment in the U-tube road
Duct wall is arc；The delivery port is arranged on pipeline highest point under the U-tube road horizontal segment arc；
The water-level control apparatus include level switch and the controller being fixedly connected on the U-shaped inner-walls of duct；
The communication connection of the level switch, controller and the electric butterfly valve；
The water level thread detector is used for sensed water level height and sensed water level signal is passed to controller；
The controller is used for the water level signal basis and high-water line for receiving and comparing the level switch transmission
Setting value and low water line setting value comparison result control the opening and closing of the electric butterfly valve；
What the electric butterfly valve was used to receiving the controller opens or closes signal opening or close signal according to controller
Automatically open up or close.
Preferably, also including two sludge for connecting with duct wall lowest point under the U-tube road horizontal segment arc respectively
Remove device；
The sludge retracting device include with the sludge pipe of the U-shaped pipeline communication, be arranged on sludge pipe stage casing
Sludge storage box and be arranged on sludge storage upper box part for observing sludge that manual water check valve is connected with the sludge pipe
The transparent windows of amount；The sludge pipe is threadedly coupled with the sludge storage box.
Preferably, the valve protection device includes the protection valve for being arranged on the drainage pipeline bottom and arranges described
The detector of liquid on drainage pipeline top；The protection valve is provided with automatic control switch；The automatic control switch and institute
State detector of liquid communication connection；The automatic control switch is used for the opening and closing for controlling protection valve；
When the detector of liquid detects the drainage pipeline liquid, the liquid-detecting control is described certainly
Dynamic controlling switch closure；The protection valve is opened；
When the detector of liquid detects the drainage pipeline does not have liquid, the detector of liquid control is described certainly
Dynamic controlling switch disconnects；The protection valve closing.
The present invention can store a certain amount of coal gas cold to collect hyponome and U-tube road composition coal gas top water storage device
Solidifying water, the water storage device make and easy for installation.Using the electric butterfly valve fed back with position, according to the feedback of Level monitor
Signal is automatically opened or closed valve, reaches the double action of draining and cut-off coal gas, while being additionally provided with sludge retracting device
Prevent sludge from blocking.
Description of the drawings
Fig. 1 is the overall structure diagram of 1 gas drainage system of the embodiment of the present invention；
Fig. 2 is the overall structure diagram of 3 gas drainage system of the embodiment of the present invention.
Specific embodiment
With reference to Figure of description, the present invention will be further described.
Embodiment 1
As shown in figure 1, a kind of gas drainage system of the present embodiment, including the top water storage device connected with gas piping with
And the water-level control apparatus 3 being fixedly connected with the top water storage device inwall；
The top water storage device include the condensate collector 1 that upper end connected with the gas piping and with the condensation
The condensed water memory 2 of 1 lower end of water collector connection；2 bottom of condensed water memory is provided with delivery port；The delivery port
It is provided with electric butterfly valve 4；The water-level control apparatus 3 are connected with the communication of the electric butterfly valve 4；The water-level control apparatus 3 are used
In sensed water level and control the opening and closing of the electric butterfly valve 4.
The condensate collector 1 is the collection hyponome that two heavy caliber ends are connected with gas piping bottom；The condensation
Water memory 2 is the U-tube road that collection hyponome small-caliber end described with two is connected；
The water-level control apparatus 3 include level switch and the controller being fixedly connected on the U-shaped inner-walls of duct；
The communication connection of the level switch, controller and the electric butterfly valve 4；
The water level thread detector is used for sensed water level height and sensed water level signal is passed to controller；
The controller is used for the water level signal basis and high-water line for receiving and comparing the level switch transmission
Setting value and low water line setting value comparison result control the opening and closing of the electric butterfly valve 4；
What the electric butterfly valve 4 was used to receiving the controller opens or closes signal opening or close signal according to controller
Automatically open up or close.
The collection hyponome is used to collect gas piping condensed water, and condensed water flows into U-tube road along collection hyponome, described
Water level thread detector by the waterline signal transmission for detecting to controller, the controller receive after signal with high-water line
Setting value and low water line setting value are compared；
If waterline value is higher than high-water line setting value, the controller sending signal controls the electric butterfly valve 4 and opens；
If waterline value is less than low water line setting value, the controller sending signal controls the electric butterfly valve 4 and closes；
If waterline value is between high-water line value and ground waterline value, the controller not sending signal is described electronic
Butterfly valve 4 maintains the original state.
The present embodiment collection hyponome and U-tube road composition coal gas top water storage device, can store a certain amount of coal gas cold
Solidifying water, water storage are convenient, while using water-level control apparatus 3 according to the water level in U-tube road controlling the switch of electric butterfly valve 4,
Draining and the effect of cut-off coal gas are reached, while without carrying out uninterrupted moisturizing.
Embodiment 2
Based on above-described embodiment, the drainage pipeline being also connected with the electric butterfly valve 4 including upper end, under the drainage pipeline
End connection bottom water storage device 6, the drainage pipeline bottom is provided with valve protection device 5；The bottom water storage device 6 is use
In the gutter of storage gas piping draining or tank.
The nominal diameter in the U-tube road is calculated according to gas piping hour displacement.
The present embodiment arranges valve protection device 5 to be used to detecting and preventing drainage pipeline gas leak, bottom water storage device 6
Coal gas draining uniform effluent is focused on to appointed place；Draining is convenient and swift, and gas leak will not occur.
Embodiment 3
As shown in Fig. 2 being based on embodiment 1, condensate collector 1 described in the present embodiment is two heavy caliber ends and gas pipe
The collection hyponome of road bottom connection；The condensed water memory 2 is the U-tube that collection hyponome small-caliber end described with two is connected
Road；Under the horizontal segment in the U-tube road, duct wall is arc；The delivery port is arranged under the U-tube road horizontal segment arc
Pipeline highest point；
The water-level control apparatus 3 include level switch and the controller being fixedly connected on the U-shaped inner-walls of duct；
The communication connection of the level switch, controller and the electric butterfly valve 4；
The water level thread detector is used for sensed water level height and sensed water level signal is passed to controller；
The controller is used for the water level signal basis and high-water line for receiving and comparing the level switch transmission
Setting value and low water line setting value comparison result control the opening and closing of the electric butterfly valve 4；
What the electric butterfly valve 4 was used to receiving the controller opens or closes signal opening or close signal according to controller
Automatically open up or close.
Collection hyponome is used to collect gas piping condensed water, and condensed water flows into U-tube road, the water level along collection hyponome
By the waterline signal transmission for detecting to controller, the controller is set after receiving signal thread detector with high-water line
Value and low water line setting value are compared, if waterline value is higher than high-water line setting value, the controller sending signal controls institute
State electric butterfly valve 4 to open；If waterline value is less than low water line setting value, the controller sending signal controls the electronic butterfly
Valve 4 cuts out；If waterline value is between high-water line value and ground waterline value, the controller not sending signal is described electronic
Butterfly valve 4 maintains the original state.
Also include two sludge removal devices for connecting with duct wall lowest point under the U-tube road horizontal segment arc respectively
7；
The sludge retracting device 7 include with the sludge pipe of the U-shaped pipeline communication, be arranged on sludge pipe stage casing
Sludge storage box and be arranged on sludge storage upper box part for observing sludge that manual water check valve is connected with the sludge pipe
The transparent windows of amount；The sludge pipe is threadedly coupled with the sludge storage box；The water check valve is normally opened water check valve；
As some impurity can be mingled with gas piping, flow in the U-tube road with condensate after condensation, sludge
Density be more than water, so sludge is flowed in the sludge removal device 7；The amount of storage of sludge is observed by observation window, when
The water check valve is closed during sludge storing excess, the sludge storage box is separated with the sludge pipe, logical after cleaning
Threaded connection is crossed on the sludge pipe, water check valve is opened；It is when the water in U-tube road enters sludge cleaning plant 7, described
Water-level control apparatus 3 can will not occur gas leak according to water lev el control electric butterfly valve.
The present embodiment adopts liquid collecting collection funnel condensed water and U-shaped pipelined storage condensed water, while being also provided with water level control
Device processed 3 is automatically obtained draining, it is ensured that coal gas draining safety, prevents sludge from depositing while being provided with sludge removal device 7
Blocking, it is ensured that the normal use of drainage system.
Embodiment 4
Based on embodiment 2, valve protection device 5 described in the present embodiment includes the protection for being arranged on the drainage pipeline bottom
Valve and the detector of liquid on the setting drainage pipeline top；Automatic control switch is provided with the protection valve；It is described
Automatic control switch is connected with detector of liquid communication；The automatic control switch is used for the opening and closing for controlling protection valve；
When the detector of liquid detects the drainage pipeline liquid, the liquid-detecting control is described certainly
Dynamic controlling switch closure；The protection valve is opened；
When the detector of liquid detects the drainage pipeline does not have liquid, the detector of liquid control is described certainly
Dynamic controlling switch disconnects；The protection valve closing；
The present embodiment valve protection device effectively prevent the gas leak in drainage pipeline, improve drainage system
Security.
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, any to be familiar with sheet
Those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered
Within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should be defined by claim is defined.
Claims (7)
1. a kind of gas drainage system, it is characterised in that：Including the top water storage device connected with gas piping and with it is described
The water-level control apparatus that top water storage device inwall is fixedly connected；
The top water storage device is included the condensate collector that upper end connected with the gas piping and is received with the condensed water
The condensed water memory of storage lower end connection；The condensed water memory bottom is provided with delivery port；The delivery port is provided with
Electric butterfly valve；The water-level control apparatus are connected with electric butterfly valve communication；The water-level control apparatus are used for sensed water level
And control the opening and closing of the electric butterfly valve.
2. as claimed in claim 1 a kind of gas drainage system, it is characterised in that：The condensate collector is two heavy calibers
The collection hyponome that end is connected with gas piping bottom；The condensed water memory is that collection hyponome small-caliber end described with two connects
Logical U-tube road；
The water-level control apparatus include level switch and the controller being fixedly connected on the U-shaped inner-walls of duct；It is described
The communication connection of level switch, controller and the electric butterfly valve；
The water level thread detector is used for sensed water level height and sensed water level signal is passed to controller；
The controller is used to receive and compare the water level signal basis of the level switch transmission and is set with high-water line
Value and low water line setting value comparison result control the opening and closing of the electric butterfly valve；
The electric butterfly valve be used to receiving the controller open or close signal and according to controller open or to close signal automatic
Open or close.
3. as claimed in claim 2 a kind of gas drainage system, it is characterised in that：Also it is connected with the electric butterfly valve including upper end
Drainage pipeline, the drainage pipeline lower end connects bottom water storage device, and the drainage pipeline bottom is provided with valve protection dress
Put；The bottom water storage device is for storing the gutter of gas piping draining or tank.
4. as claimed in claim 2 a kind of gas drainage system, it is characterised in that：The nominal diameter in the U-tube road is according to coal
Feed channel hour displacement is calculated.
5. as claimed in claim 1 a kind of gas drainage system, it is characterised in that：The condensate collector is two heavy calibers
The collection hyponome that end is connected with gas piping bottom；The condensed water memory is that collection hyponome small-caliber end described with two connects
Logical U-tube road；Under the horizontal segment in the U-tube road, duct wall is arc；The delivery port is arranged on the U-shaped pipe level
Pipeline highest point under section arc；
The water-level control apparatus include level switch and the controller being fixedly connected on the U-shaped inner-walls of duct；It is described
The communication connection of level switch, controller and the electric butterfly valve；
The water level thread detector is used for sensed water level height and sensed water level signal is passed to controller；
The controller is used to receive and compare the water level signal basis of the level switch transmission and is set with high-water line
Value and low water line setting value comparison result control the opening and closing of the electric butterfly valve；
The electric butterfly valve be used to receiving the controller open or close signal and according to controller open or to close signal automatic
Open or close.
6. as claimed in claim 5 a kind of gas drainage system, it is characterised in that：Also including two respectively with the U-tube road
The sludge removal device of duct wall lowest point connection under horizontal segment arc；
The sludge retracting device include with the sludge pipe of the U-shaped pipeline communication, be arranged on the manual of sludge pipe stage casing
Sludge storage box and be arranged on sludge storage upper box part for observing sludge quantity that water check valve is connected with the sludge pipe
Transparent windows；The sludge pipe is threadedly coupled with the sludge storage box.
7. as claimed in claim 3 a kind of gas drainage system, it is characterised in that：The valve protection device includes being arranged on institute
The protection valve for stating drainage pipeline bottom and the detector of liquid that the drainage pipeline top is set；The protection valve is provided with
Automatic control switch；The automatic control switch is connected with detector of liquid communication；The automatic control switch is used to control
The opening and closing of system protection valve；
When the detector of liquid detects the drainage pipeline liquid, the liquid-detecting controls the automatic control
System switch closure；The protection valve is opened；
When the detector of liquid detects the drainage pipeline does not have liquid, the detector of liquid controls the automatic control
System is switched off；The protection valve closing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010824.0A CN106555934B (en) | 2017-01-06 | 2017-01-06 | gas drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010824.0A CN106555934B (en) | 2017-01-06 | 2017-01-06 | gas drainage system |
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| Publication Number | Publication Date |
|---|---|
| CN106555934A true CN106555934A (en) | 2017-04-05 |
| CN106555934B CN106555934B (en) | 2018-12-04 |
Family
ID=58445459
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710010824.0A Active CN106555934B (en) | 2017-01-06 | 2017-01-06 | gas drainage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109205762A (en) * | 2017-06-30 | 2019-01-15 | 上海轻工业研究所有限公司 | Recirculating cooling water system and its self-draining arrangement |
| CN110108131A (en) * | 2019-05-24 | 2019-08-09 | 广东中鹏热能科技有限公司 | A kind of automatically controlled automatic row's phenol water system of kiln |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5525133A (en) * | 1994-07-29 | 1996-06-11 | St. Clair Pipelines Ltd. | Gas pipeline drip |
| CN2649930Y (en) * | 2003-06-12 | 2004-10-20 | 中国科学院成都生物研究所 | Gas pipeline condensate water eliminating device |
| CN201313903Y (en) * | 2008-12-15 | 2009-09-23 | 鞍钢股份有限公司 | Automatic water charging system for coal gas launching groove |
| CN201359119Y (en) * | 2009-02-23 | 2009-12-09 | 宝山钢铁股份有限公司 | Multi-stage box body sealed gas conduit water-sealed valve device |
| US20120216892A1 (en) * | 2009-11-04 | 2012-08-30 | Postech Academy-Industry Foundation | Safety valve of low-pressure gas pipe |
| CN202852079U (en) * | 2012-09-19 | 2013-04-03 | 广东韶钢松山股份有限公司 | U type pipeline coal gas water seal device |
| CN202868313U (en) * | 2012-10-25 | 2013-04-10 | 河北立中有色金属集团有限公司 | Automatic discharge device for gas pipeline condensate water |
| CN202992652U (en) * | 2012-12-14 | 2013-06-12 | 启东市海信机械有限公司 | Automatic intelligent type high-pressure gas drainer |
| CN203286278U (en) * | 2013-05-14 | 2013-11-13 | 宝钢不锈钢有限公司 | Dual-communication self-balancing coal gas pipe condensate water discharging device |
| CN203363678U (en) * | 2013-08-01 | 2013-12-25 | 唐山志威科技有限公司 | Pollution discharge and treatment device of coal gas drainage system |
| CN206398372U (en) * | 2017-01-06 | 2017-08-11 | 中冶华天工程技术有限公司 | gas drainage system |
-
2017
- 2017-01-06 CN CN201710010824.0A patent/CN106555934B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5525133A (en) * | 1994-07-29 | 1996-06-11 | St. Clair Pipelines Ltd. | Gas pipeline drip |
| CN2649930Y (en) * | 2003-06-12 | 2004-10-20 | 中国科学院成都生物研究所 | Gas pipeline condensate water eliminating device |
| CN201313903Y (en) * | 2008-12-15 | 2009-09-23 | 鞍钢股份有限公司 | Automatic water charging system for coal gas launching groove |
| CN201359119Y (en) * | 2009-02-23 | 2009-12-09 | 宝山钢铁股份有限公司 | Multi-stage box body sealed gas conduit water-sealed valve device |
| US20120216892A1 (en) * | 2009-11-04 | 2012-08-30 | Postech Academy-Industry Foundation | Safety valve of low-pressure gas pipe |
| CN202852079U (en) * | 2012-09-19 | 2013-04-03 | 广东韶钢松山股份有限公司 | U type pipeline coal gas water seal device |
| CN202868313U (en) * | 2012-10-25 | 2013-04-10 | 河北立中有色金属集团有限公司 | Automatic discharge device for gas pipeline condensate water |
| CN202992652U (en) * | 2012-12-14 | 2013-06-12 | 启东市海信机械有限公司 | Automatic intelligent type high-pressure gas drainer |
| CN203286278U (en) * | 2013-05-14 | 2013-11-13 | 宝钢不锈钢有限公司 | Dual-communication self-balancing coal gas pipe condensate water discharging device |
| CN203363678U (en) * | 2013-08-01 | 2013-12-25 | 唐山志威科技有限公司 | Pollution discharge and treatment device of coal gas drainage system |
| CN206398372U (en) * | 2017-01-06 | 2017-08-11 | 中冶华天工程技术有限公司 | gas drainage system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109205762A (en) * | 2017-06-30 | 2019-01-15 | 上海轻工业研究所有限公司 | Recirculating cooling water system and its self-draining arrangement |
| CN110108131A (en) * | 2019-05-24 | 2019-08-09 | 广东中鹏热能科技有限公司 | A kind of automatically controlled automatic row's phenol water system of kiln |
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| Publication number | Publication date |
|---|---|
| CN106555934B (en) | 2018-12-04 |
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