CN109163165B - A kind of discharge of steam process condensation water hammer inhibition system - Google Patents
A kind of discharge of steam process condensation water hammer inhibition system Download PDFInfo
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- CN109163165B CN109163165B CN201810836981.1A CN201810836981A CN109163165B CN 109163165 B CN109163165 B CN 109163165B CN 201810836981 A CN201810836981 A CN 201810836981A CN 109163165 B CN109163165 B CN 109163165B
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- 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
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
-
- 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
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/055—Valves therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The present invention relates to industrial production technology fields, inhibit system more particularly, to a kind of discharge of steam process condensation water hammer, comprising: steam-dump system, air ejector system and flow control system；The steam variable diameter pipeline of steam-dump system can increase quality of steam flow rate, coagulate steam jet into water tank, prevent the generation of water hammer；The air ejector system is injected air into steam pipework by different main roads, it can hinder the heat exchange of carbonated drink at different locations under different vapour amounts, effectively inhibit even to be eliminated condensation water hammer in the generation of different location, multiple pressure sensors can monitor pressure oscillation at different location and then obtain the raw position of condensed water percussion on pipeline, to select the start and stop of different air injection main roads, condensation water hammer can be prevented in the generation of elbow by air ejector system bypass；Flow control system adjusts the size of main road and bypass air amount according to steam flow, to more effectively inhibit the generation for condensing water hammer under different operating conditions.
Description
Technical field
The present invention relates to industrial production technology fields, inhibit system more particularly, to a kind of discharge of steam process condensation water hammer
System.
Background technique
Condensation water hammer appears widely in various industrial circles, such as the afterheat steam in submarine system is discharged into ocean
In the process, when quality of steam flow rate is smaller, steam is directly contacted in pipe with water and is coagulated, and condensation is easy to appear in pipe
Water hammer；In nuclear reactor pressure relief system, the quantity of steam injected into suppression pool can gradually change, when quantity of steam compared with
When low, subcooled water will be flowed back into steam pipework, coagulate water hammer.
Independent steam bubble occur is the primary condition for condensing water hammer, independent since the density of water is probably 1000 times of steam
Region locating for steam bubble will form negative pressure or vacuum state, and two bursts of water flows of upstream and downstream are accelerated to flow to the negative pressuren zone by moment, cause huge
Big pressure oscillation, that is, coagulate water hammer.Condensed water hammer has very big oscillation intensity, can impact and destroy pipeline and
Relevant device in pipeline seriously affects the safe operation of system.Therefore, inhibit the generation for even being eliminated condensation water hammer for phase
The industrial application of pass has great importance.
In the prior art certain inhibiting effect can only be played for the two-phase water hammer of a certain specific position, but condensed water
Hammer has randomness, and the quantity of steam of discharge of steam process can change, and therefore, the position that condensation water hammer occurs can be random
Variation.Thus it is possible to find it is a kind of effectively inhibit even be eliminated under different operating conditions condense water hammer in the side that different location generates
Method has great importance for relevant industrial application.
Summary of the invention
The purpose of the present invention is to provide a kind of discharge of steam process condensation water hammers to inhibit system, to alleviate in the prior art
Existing the technical issues of can only playing certain inhibiting effect for the two-phase water hammer of a certain specific position.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of discharge of steam process condensation water hammer inhibition system, including steam-dump system, air ejector system and flow
Control system；
The steam-dump system includes steam generator 1, with the 1 horizontal steam pipe in sequentially connected upstream of steam generator
Safety valve 2 and steam mass flow are arranged on horizontal steam pipeline 4 for road 4, vertical steam pipework 5 and downstream horizontal steam pipework 6
Meter 3, the downstream of the horizontal steam pipework 6 in downstream is divided into multiple branches, and each branch is small by 6 diameter of steam pipework more horizontal than downstream
Reducer pipe be connected to water tank 12, multiple reducer pipes include a main road reducer pipe 7 and multiple bypass reducer pipes, bypass reducer pipe
On be provided with electric control valve；The steam generator 1 and water tank 12 have been respectively arranged below 14 He of steam generator blowdown valve
Water tank blowdown valve 13；
The air ejector system includes air accumulator 15, with the sequentially connected compressor 16 of air accumulator 15 and air pipe line
17, the pipeline in 17 downstream of air pipe line is divided into multiple air injection main roads and an air injection bypass 20, and air injects main road
Air flow meter 22 and main road electric control valve 23 are respectively provided with bypass；The horizontal steam pipework 4 in upstream and downstream level are steamed
It is provided with multiple pressure sensors 25 on vapor pipeline 6, pressure oscillation at different location is monitored by pressure sensor 25 and is obtained
Raw position is fired to condensed water, to inject the electric control valve 23 of main road by control air to control different air injection masters
The start and stop on road.
The flow control system include steam quality flowmeter 3, main road and the air flow meter of bypass 22 and
The controller 24 being connect with steam quality flowmeter 3 and air flow meter 22, by controller 24 monitor steam flow come
It controls the aperture of the electric control valve 23 of main road and bypass and then controls the size of the air mass flow of main road and bypass.
Further, the reducer pipe has three, and respectively main road reducer pipe 7, first bypasses reducer pipe 8 and the second bypass
Reducer pipe 9；Wherein the first bypass reducer pipe 8 and the second bypass reducer pipe 9 bypass electric adjustable by be arranged thereon first respectively
It saves valve 10 and the second bypass electric control valve 11 controls its start and stop, the centre distance between reducer pipe is greater than three times reducer pipe pipe
Diameter.
Further, it is main steaming that the main road reducer pipe 7, first, which bypasses reducer pipe 8 and the diameter of the second bypass reducer pipe 9,
The length-to-diameter of the 1/8-1/3 of vapor pipeline diameter, reducer pipe are no less than 15.
Further, the link position of the air injection main road and steam pipework is located at 3 downstream of steam quality flowmeter
At five times of steam pipework diametral distances.
Further, the air injection bypass link position is located at the horizontal steam pipework 6 of vertical steam pipework 5 and downstream
Between one times of elbow upstream steam pipework diametral distance at.
Further, first air injects main road apart from elbow no more than ten times on the horizontal steam pipework 6 in the downstream
Steam pipework diametral distance；The distance between multiple air injection main roads are no more than 20 times of steam pipeworks on same steam pipework
Diametral distance.
Further, air injection main road and the electric control valve 23 of bypass closely air pipe line and steam pipework
Tie point.
Further, the size of the air quality flow of the air injection main road is no more than steam mass flow
10%, the size of the air quality flow of air injection bypass is no more than the 2% of steam mass flow.
Further, the downstream of multiple air injection main roads and air injection bypass 20 and steam pipework tie point is at least
There is a pressure sensor 25.
A kind of discharge of steam process condensation water hammer provided by the invention inhibits system, comprising: steam-dump system, air note
Penetrate system and flow control system；There are reducer pipe, reducer pipes with water tank junction on steam-dump system middle steam tube road
Quality of steam flow rate can be made to increase, coagulate steam jet into water tank, inhibit the generation of condensation water hammer；The sky
Gas injecting systems main road injects air into vapour system, can hinder to exchange heat between carbonated drink, can effectively inhibit even
The raw position of condensed water percussion can be monitored by eliminating condensation water hammer multiple pressure-measuring-points in the generation of different location, steam pipework
It sets, and then selects the unlatching of different air injection main roads, and air ejector system bypass can be hammered into shape to avoid condensed water in elbow
The generation at place；Flow control system can adjust the size of air injection main road and bypass air amount according to steam flow, thus
More effectively inhibit the generation of condensation water hammer.The present invention, which can be alleviated, existing in the prior art can only be directed to a certain specific position
Two-phase water hammer the technical issues of playing certain inhibiting effect.
Detailed description of the invention
Fig. 1 is that a kind of discharge of steam process of the invention condenses water hammer inhibition system structure diagram.
Icon: 1- steam generator；2- safety valve；3- steam quality flowmeter；The horizontal steam pipework in the upstream 4-；5- is vertical
Steam pipework；The horizontal steam pipework in the downstream 6-；7- main road reducer pipe；8- first bypasses reducer pipe；9- second bypasses reducer pipe；
10- first bypasses electric control valve；11- second bypasses electric control valve；12- water tank；13- water tank blowdown valve；14- steam generation
Device blowdown valve；15- air accumulator；16- compressor；17- air pipe line；18,19,21- air injects main road；The injection of 20- air is other
Road；22- air flow meter；23- electric control valve；24- controller；25- dynamic pressure transducer.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of discharge of steam process condensation water hammer of the present invention inhibits system, including steam-dump system, sky
Gas injecting systems and flow control system；The steam-dump system includes steam generator 1, is successively connected with steam generator 1
Peace is arranged on horizontal steam pipeline 4 for the horizontal steam pipework 4 in the upstream connect, vertical steam pipework 5 and downstream horizontal steam pipework 6
The downstream of full valve 2 and steam quality flowmeter 3, the horizontal steam pipework 6 in downstream is divided into multiple branches, and each branch passes through than downstream
The small reducer pipe of 6 diameter of horizontal steam pipeline is connected to water tank 12, and multiple reducer pipes include a main road reducer pipe and multiple sides
Road reducer pipe bypasses and is provided with electric control valve on reducer pipe；The steam generator 1 and water tank 12 have been respectively arranged below steaming
Vapour generator blowdown valve 14 and water tank blowdown valve 13；The air ejector system includes air accumulator 15, is successively connected with air accumulator 15
The compressor 16 and air pipe line 17 connect, the pipeline in 17 downstream of air pipe line are divided into multiple air injection main roads 18,19,21 and one
A air injection bypass 20, air injection main road and bypass are respectively provided with air flow meter 22 and main road electric control valve 23；
Multiple pressure sensors 25 are provided on the horizontal steam pipework 6 of the horizontal steam pipework 4 in upstream and downstream, pass through pressure sensor 25
Pressure oscillation obtains condensed water in turn and fires raw position at monitoring different location, thus by control air injection main road 18,19,
21 electric control valve 23 controls the start and stop of different air injection main roads.The flow control system includes steam mass flow
It counts the air flow meter 22 of 3, main road and bypass and is connect with steam quality flowmeter 3, air flow meter 22
Controller 24 monitors steam flow by controller 24 to control main road and bypass the aperture of electric control valve 23 and adjust sky
Gas injects the size of the air mass flow of main road and bypass.
There are reducer pipe, variable diameter pipe diameter is main steam header for steam-dump system middle steam tube road and water tank junction
On the one hand the 1/8-1/3 on road can make quality of steam flow rate increase, coagulate steam jet into water tank, realization is let out
The purpose of pressure and the generation for preventing condensation water hammer；
Wherein, the center spacing of three reducer pipes is greater than three times reducer pipe diametral distance, can so reduce steam jet
Pressure oscillation intensity when to water tank.And the length of reducer pipe and its diameter ratio cannot be less than 15, can so to steam
Vapour reaches abundant flowing in reducer pipe.
It is straight that the link position of the steam pipework and air injection main road is located at five times of 3 downstream of steam quality flowmeter pipeline
At diameter distance, water hammer can nearby occur to avoid flowmeter, damage flowmeter.
Air injection bypass is connected with behind second elbow in the steam pipework downstream, link position is located on elbow
It swims at one times of steam pipework diametral distance.Can making elbow in this way, there are air, and air is prevented to be distributed in channel interior
Elbow is unevenly caused to form slug flow to coagulate water hammer.
First air injection main road is straight no more than ten times of steam pipeworks apart from elbow on the horizontal steam pipework 6 in downstream
Diameter distance；The distance between multiple air injection main roads are no more than 20 times of steam pipework diametral distances on same steam pipework.
So can be to avoid beyond after certain length of pipe, air is unevenly distributed the generation for leading to condense water hammer.
Multiple electric control valves on the air pipe line closely air pipe line and steam pipework tie point.It so can be with
Avoid between air pipe line regulating valve and steam pipework that there are subcooled waters, so that water hammer occurs in air pipe line.
There are flow control systems between the air flow meter and steam quality flowmeter, pass through monitoring control devices
Steam flow come control air electric control valve unlatching so that adjust air mass flow size.The air quality flow of main road
Size is no more than the 10% of steam mass flow, and the size of the air quality flow of bypass is no more than the 2% of steam mass flow.
When in steam containing 10% air, thermal resistance between vapour-liquid can be greatly increased, effectively eliminates condensation water hammer；Air injection
The purpose that bypass provides air only prevents elbow from water hammer occurs, therefore a small amount of air can achieve the goal.
The downstream of each air pipe line and steam pipework tie point at least one pressure sensor.Pass through difference
The pressure comparison of the sensor of position can differentiate the generation position of water attack, to adjust the pressure sensor upstream of maximum intensity
Air ejector system, eliminate the purpose that generates in different location of water attack to realize.
The course of work of present system is as follows: wherein air ejector system selects operation side according to the size of quantity of steam
Formula.
When quality of steam flow rate is very high, steam pressure is larger, and steam can continue jet stream entrance by main road reducer pipe 7
It is coagulated in water tank 12, in order to quickly achieve the purpose that pressure release and avoid the generation of water hammer, opens the first bypass at this time
Electric control valve 10 and the second bypass electric control valve 11, so that main road reducer pipe 7, first bypasses reducer pipe 8 and the second bypass
Reducer pipe 9 works at the same time, and does not have the generation of condensed water hammer at this time, and air ejector system, which is in close, stops state.
With the reduction of quality of steam flow rate, steam pressure starts to gradually decrease, and has opposing steam flow once in a while at this time to steaming
In vapor pipeline, water hammer occurs.At this point, the first bypass electric control valve 10 and the second bypass electric control valve 11 are closed, by
In water return amount reduction prevent steam in steam pipework from coagulating, steam enters water by 7 jet stream of main road reducer pipe
It is coagulated in case 12, does not have the generation of condensed water hammer at this time, air ejector system, which is in close, stops state.
With further decreasing for steam mass flow, held in the horizontal steam pipework 6 of vertical steam pipework 5 and downstream at this time
The raw condensation water hammer of supervention.Air is opened at this time and injects bypath system, and passes through the variation of pressure sensor at different location
Approximation obtains condensed water and fires raw position, and then opens air at different location and inject main road system, according to steam mass flow
It determines air injection main road and air injection bypass mass flow, while opening the first bypass electric control valve 10 and the second bypass
Electric control valve 11.The presence of air can hinder the heat exchange between carbonated drink to act on, and inhibit the generation of condensation water hammer, meanwhile, it opens
Opening all reducer pipes is discharged into heat in pipe as early as possible in water tank 12, realizes the purpose of pressure release.
Claims (9)
1. a kind of discharge of steam process condensation water hammer inhibits system, which is characterized in that including steam-dump system, air injection system
System and flow control system；
The steam-dump system includes steam generator (1), with the horizontal steam pipe in steam generator (1) sequentially connected upstream
Safety valve (2) are arranged on the horizontal steam pipework in upstream (4) in road (4), the horizontal steam pipework of vertical steam pipework (5) and downstream (6)
With steam quality flowmeter (3), the downstream of the horizontal steam pipework in downstream (6) is divided into multiple branches, and each branch passes through than downstream
The small reducer pipe of horizontal steam pipeline (6) diameter is connected to water tank (12), multiple reducer pipes include a main road reducer pipe (7) and
Multiple bypass reducer pipes bypass and are provided with electric control valve on reducer pipe；Divide below the steam generator (1) and water tank (12)
It is not provided with steam generator blowdown valve (14) and water tank blowdown valve (13)；
The air ejector system includes air accumulator (15), with air accumulator (15) sequentially connected compressor (16) and air pipe line
(17), the air injection that the pipeline in air pipe line downstream is divided into multiple air injection main roads and is connected to vertical steam pipework (5)
It bypasses (20), is respectively provided with air flow meter (22) and electric control valve (23) in air injection main road and bypass；Upper water
Multiple pressure sensors (25) are provided on flat steam pipework (4) and the horizontal steam pipework in downstream (6), pass through pressure sensor
(25) it monitors pressure oscillation at different location and obtains the raw position of condensed water percussion, and then the electronic of main road is injected by control air
Regulating valve (23) controls the start and stop of different air injection main roads；
The flow control system include steam quality flowmeter (3), main road and the air flow meter of bypass (22) and
The controller (24) connecting with steam quality flowmeter (3) and air flow meter (22) is monitored by controller (24) and is steamed
Steam flow amount come control main road electric control valve (23) aperture so that control main road and bypass air flow meter (22)
Size.
2. discharge of steam process condensation water hammer according to claim 1 inhibits system, which is characterized in that the reducer pipe has
Three, respectively main road reducer pipe (7), the first bypass reducer pipe (8) and the second bypass reducer pipe (9)；Wherein the first bypass becomes
Diameter pipe (8) and the second bypass reducer pipe (9) the first bypass electric control valve (10) and the second bypass by being arranged thereon respectively
Electric control valve (11) controls its start and stop, and the centre distance between reducer pipe is greater than three times reducer pipe caliber.
3. discharge of steam process condensation water hammer according to claim 2 inhibits system, which is characterized in that the main road variable diameter
The diameter of pipe (7), the first bypass reducer pipe (8) and the second bypass reducer pipe (9) is the 1/8-1/3 of major steam line diameter, is become
The length-to-diameter of diameter pipe is no less than 15.
4. discharge of steam process condensation water hammer according to claim 1 inhibits system, which is characterized in that the air injection
The link position of main road and steam pipework is located at the steam pipework diametral distance of steam quality flowmeter (3) five times of downstream.
5. discharge of steam process condensation water hammer according to claim 1 inhibits system, which is characterized in that the air injection
Bypass elbow upstream one times steam pipe of the link position between the horizontal steam pipework of vertical steam pipework (5) and downstream (6)
At the diametral distance of road.
6. discharge of steam process condensation water hammer according to claim 1 inhibits system, which is characterized in that the downstream is horizontal
The upper first air injection main road of steam pipework (6) is no more than ten times of steam pipework diametral distances apart from elbow；Same steam pipe
The distance between multiple air injection main roads are no more than 20 times of steam pipework diametral distances on the road.
7. discharge of steam process condensation water hammer according to claim 1 inhibits system, which is characterized in that the air injection
Electric control valve (23) closely air pipe line and steam pipework tie point on main road and bypass.
8. discharge of steam process condensation water hammer according to claim 1 inhibits system, which is characterized in that the air injection
The size of the air quality flow of main road is no more than the 10% of steam mass flow, the air quality flow of air injection bypass
Size is no more than the 2% of steam mass flow.
9. discharge of steam process condensation water hammer according to claim 1 inhibits system, which is characterized in that multiple air injections
The downstream of main road and air injection bypass (20) and steam pipework tie point at least one pressure sensor (25).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810836981.1A CN109163165B (en) | 2018-07-26 | 2018-07-26 | A kind of discharge of steam process condensation water hammer inhibition system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810836981.1A CN109163165B (en) | 2018-07-26 | 2018-07-26 | A kind of discharge of steam process condensation water hammer inhibition system |
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| CN109163165A CN109163165A (en) | 2019-01-08 |
| CN109163165B true CN109163165B (en) | 2019-11-26 |
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| CN201810836981.1A Active CN109163165B (en) | 2018-07-26 | 2018-07-26 | A kind of discharge of steam process condensation water hammer inhibition system |
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| CN113494704A (en) * | 2020-03-18 | 2021-10-12 | 北京化工大学 | Nuclear power waste heat discharging device |
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|---|---|---|---|---|
| DE1410353A1 (en) * | 1956-10-05 | 1968-10-10 | Beaunit Corp | Method and device for the production of yarns or fibers from plastics |
| CN202066266U (en) * | 2011-05-19 | 2011-12-07 | 北京创时能源有限公司 | Water attack resistant protection system for steam pipes of steam absorption type heat pumps |
| CN102506605A (en) * | 2012-01-04 | 2012-06-20 | 亿恒节能科技江苏有限公司 | Strong-water-impact preventing drainage system |
| CN203657070U (en) * | 2013-12-31 | 2014-06-18 | 张学云 | Water hammer preventing system of steam heat supply pipeline network |
| CN107850268A (en) * | 2015-09-18 | 2018-03-27 | 流动科技株式会社 | Possess water piping system and its control method with the check-valves for crashing mitigation capability |
-
2018
- 2018-07-26 CN CN201810836981.1A patent/CN109163165B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1410353A1 (en) * | 1956-10-05 | 1968-10-10 | Beaunit Corp | Method and device for the production of yarns or fibers from plastics |
| CN202066266U (en) * | 2011-05-19 | 2011-12-07 | 北京创时能源有限公司 | Water attack resistant protection system for steam pipes of steam absorption type heat pumps |
| CN102506605A (en) * | 2012-01-04 | 2012-06-20 | 亿恒节能科技江苏有限公司 | Strong-water-impact preventing drainage system |
| CN203657070U (en) * | 2013-12-31 | 2014-06-18 | 张学云 | Water hammer preventing system of steam heat supply pipeline network |
| CN107850268A (en) * | 2015-09-18 | 2018-03-27 | 流动科技株式会社 | Possess water piping system and its control method with the check-valves for crashing mitigation capability |
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