CN105200194A - U-shaped pipe non-return device - Google Patents
U-shaped pipe non-return device Download PDFInfo
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- CN105200194A CN105200194A CN201510587866.1A CN201510587866A CN105200194A CN 105200194 A CN105200194 A CN 105200194A CN 201510587866 A CN201510587866 A CN 201510587866A CN 105200194 A CN105200194 A CN 105200194A
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- pipeline section
- water
- condenser
- pipe segment
- return device
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Abstract
The invention discloses a U-shaped pipe non-return device which comprises a first pipe segment, a second pipe segment and a third pipe segment; the first pipe segment and the second pipe segment are perpendicular to the plane and arranged in parallel, and the third pipe segment is longer than the first pipe segment. One end of the first pipe segment is connected with a main water supply pipe, and the other end of the first pipe segment is connected with one end of the second pipe segment; one end of the third pipe segment is connected with the other end of the second pipe segment, the other end of the third pipe segment is connected with a C3 condenser through a second water supply branch pipe, and side cold water is prevented from flowing back to the C3 condenser from a C2 condenser. According to the U-shaped pipe non-return device, the dual functions water supply and vacuum backflow prevention are achieved through a U-shaped pipe with pipes on the two sides having a height difference are achieved, work is more reliable, a mechanical clamping fault is avoided, influences of impurities in water are avoided, water supply resistance is small, sealed vacuum is tight, and zero leakage can be achieved.
Description
Technical field
The present invention relates to RH external refining vacuum system technical field, particularly relate to a kind of U-tube non-return device.
Background technology
Vacuum system is the core institution of current RH furnace outer refining process, and system vacuum internal leakage of backflowing is one of vacuum system most common failure, and is difficult to investigation, and the treatment time is long, seriously restricts RH processing unit overall production.Condensing water conduit reverse checkvalve internal leakage fault causes system vacuum to backflow one of internal leakage principal element.
In the prior art, when vacuum system is run, the starting stage vacuumized, water of condensation main pipeline provides side cold water to C2 and C3 condenser simultaneously, and both share a water inlet pipe; Enter dark vacuumizing phase, C2 and C3 condenser side cold water is closed, in C2 condenser, vacuum tightness is greater than vacuum tightness in C3 condenser, at present for preventing vacuum tightness from being backflowed to C3 condenser by C2 condenser, at the C3 condenser mechanical reverse checkvalve that provides side cold water pipes to install.But because water of condensation generally uses turbid circulating water, water quality is dirtier, impurity is many, the easy fouling jam of valve plate, often cause reverse checkvalve to close not in place, poorly sealed, waste gas when causing deeply vacuumizing in C3 condenser backflows in C2 condenser, cause vacuum backflow in let out short circuit, whole system occurs that vacuum tightness is taken out to get off or fluctuations of vacuum.
Summary of the invention
The embodiment of the present application by providing a kind of U-tube non-return device, can effectively solve existing vacuum system backflow in let out technical problem, can realize supplying water and prevent vacuum to backflow double technique effect simultaneously.
The embodiment of the present application is by providing a kind of U-tube non-return device, be applied in a vacuum system, wherein said vacuum system comprises vibration means for main pipe for supplying water road, the first water supply branch road, the second water supply branch road, C2 condenser and C3 condenser, wherein, described vibration means for main pipe for supplying water road is connected with described C2 condenser by described first water supply branch road, it is characterized in that, described U-tube non-return device comprises:
First pipeline section, the second pipeline section and the 3rd pipeline section;
Described first pipeline section and described 3rd pipeline section are perpendicular to horizontal plane and be arranged in parallel, and described 3rd pipeline section is longer than described first pipeline section;
One end of described first pipeline section is connected with described vibration means for main pipe for supplying water road, and the other end is connected with one end of described second pipeline section;
One end of described 3rd pipeline section is connected with the other end of described second pipeline section, and the other end of described 3rd pipeline section is connected with described C3 condenser by described second water supply branch road, stops side cold water to backflow to described C3 condenser from described C2 condenser.
Further, described 3rd pipeline section is than long more than the 9.7m of described first pipeline section.
Further, described U-tube non-return device, also comprises:
One for water regulating valve, and the described water regulating valve that supplies is arranged on described first pipeline section.
Further, described U-tube non-return device, also comprises:
One sluicing wash water valve, described sluicing wash water valve is arranged on bottom described second pipeline section.
The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:
The 3rd pipeline section structure design longer than described first pipeline section is stated owing to have employed, make the water column gravity pressure containing vacuum pressure of the ducted residuary water self-assembling formation of U-tube non-return device, do not adopt the valve of any pattern to carry out sealed vacuum, efficiently solve in prior art and adopt the pressure-losses in Valve controlling large, the easy jam of valve plate, the problems such as work failure rate is high, achieve for water-lute dual-use function, and reliable operation, failure rate is low, 0 leaks, and supplies water little along stroke pressure loss.
Accompanying drawing explanation
The structural representation of the U-tube non-return device that Fig. 1 provides for the embodiment of the present application one.
Fig. 2 is the structural representation in practicing of the non-return device of U-tube shown in Fig. 1.
Embodiment
Embodiment one
The object of this invention is to provide a kind of U-tube non-return device, the U-tube utilizing two side ducts to have difference of altitude realizes supplying water and prevent vacuum to backflow dual-use function, compare the existing technology utilizing reverse checkvalve to prevent vacuum from backflowing, work more reliable, mechanical jamming failure can not be there is, do not affect by impurities in water, little for water resistance, sealed vacuum is tight, can realize zero leakage.
As shown in Figure 1, embodiments provide a kind of U-tube non-return device, be applied in a vacuum system, wherein said vacuum system comprises vibration means for main pipe for supplying water road 1, first water supply branch road 2, second water supply branch road 3, C2 condenser 4 and C3 condenser 5, wherein, described vibration means for main pipe for supplying water road 1 is connected with described C2 condenser 4 by described first water supply branch road 2, and described U-tube non-return device comprises:
First pipeline section 6-1, the second pipeline section 6-2 and the 3rd pipeline section 6-3; Described first pipeline section 6-1 and described 3rd pipeline section 6-3 is perpendicular to horizontal plane and be arranged in parallel.Described 3rd pipeline section 6-3 is than long more than the 9.7m of described first pipeline section 6-1, because final vacuum is-1bar, i.e. negative 1 unit normal atmosphere, the gravity pressure of 9.7m water column when also just equaling 0m height above sea level, so the water column that formed of the U-tube non-return device utilizing difference of altitude to be 9.7m can effective sealed vacuum degree.The preferred 10m of the present embodiment, in actual use, vacuum tightness has transient fluctuation, causes water column to fluctuate, many 0.3m are enough to make up, and prevent actual water colunm height not enough, difference of altitude is excessive, pipeline will be caused to waste and installing space increasing, and difference of altitude is less than 9.7m and will there is vacuum leak problem.
One end of described first pipeline section 6-1 is connected with described vibration means for main pipe for supplying water road, and the other end is connected with one end of described second pipeline section; One end of described 3rd pipeline section 6-3 is connected with the other end of described second pipeline section, and the other end of described 3rd pipeline section 6-3 is connected with described C3 condenser 5 by described second water supply branch road 3, stops side cold water to backflow to described C3 condenser 5 from described C2 condenser 4.
Described U-tube non-return device, also comprises: one for water regulating valve 7 and a sluicing wash water valve 8, and the described water regulating valve 7 that supplies is arranged on described first pipeline section 6-1, cuts off the water overhaul and current adjustment for pipeline.Described sluicing wash water valve 8 is arranged on bottom described second pipeline section 6-2, for blowdown and sluicing.
The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:
1, the 3rd pipeline section structure design longer than described first pipeline section is stated owing to have employed, make the water column gravity pressure containing vacuum pressure of the ducted residuary water self-assembling formation of U-tube non-return device, do not adopt the valve of any pattern to carry out sealed vacuum, efficiently solve in prior art and adopt the pressure-losses in Valve controlling large, the easy jam of valve plate, the problems such as work failure rate is high, achieve for water-lute dual-use function, and reliable operation, failure rate is low, 0 leaks, and supplies water little along stroke pressure loss.
2, owing to having installed sluicing wash water valve at the lowest order of U-tube non-return device, effectively solve the problem of U-tube road low level contamination blocking pipe, achieve throw out outer row in time in water, avoid blocking pipe.
In order to better understand technique scheme, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail.
Embodiment two
As shown in Figure 2, a kind of U-tube non-return device 6 provided of the present invention, in actual applications, when vacuum system is run, the starting stage vacuumized, water of condensation provides side cold water to C2 condenser 4 and C3 condenser 5 by U-tube non-return device 6 simultaneously.Enter dark vacuumizing phase, C2 condenser 4 and C3 condenser 5 side cold water are closed, in U-tube non-return device 6, residuary water forms nature water column, in C2 condenser 4, vacuum tightness is greater than vacuum tightness in C3 condenser 5, the water column formed by residuary water in U-tube non-return device 6 prevents vacuum tightness from being backflowed to C3 condenser 5 by C2 condenser 4, and not by the impact of water quality, sealing is tight, when effectively having stopped deeply to vacuumize because of vacuum backflow in let out whole system that short circuit causes and occur that vacuum tightness is taken out to get off or the problem such as fluctuations of vacuum.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. a U-tube non-return device, be applied in a vacuum system, wherein said vacuum system comprises vibration means for main pipe for supplying water road, the first water supply branch road, the second water supply branch road, C2 condenser and C3 condenser, wherein, described vibration means for main pipe for supplying water road is connected with described C2 condenser by described first water supply branch road, it is characterized in that, described U-tube non-return device comprises:
First pipeline section, the second pipeline section and the 3rd pipeline section;
Described first pipeline section and described 3rd pipeline section are perpendicular to horizontal plane and be arranged in parallel, and described 3rd pipeline section is longer than described first pipeline section;
One end of described first pipeline section is connected with described vibration means for main pipe for supplying water road, and the other end is connected with one end of described second pipeline section;
One end of described 3rd pipeline section is connected with the other end of described second pipeline section, and the other end of described 3rd pipeline section is connected with described C3 condenser by described second water supply branch road, stops side cold water to backflow to described C3 condenser from described C2 condenser.
2. U-tube non-return device as claimed in claim 2, is characterized in that:
Described 3rd pipeline section is than long more than the 9.7m of described first pipeline section.
3. U-tube non-return device as claimed in claim 2, is characterized in that, also comprise:
One for water regulating valve, and the described water regulating valve that supplies is arranged on described first pipeline section.
4. U-tube non-return device as claimed in claim 2, is characterized in that, also comprise:
One sluicing wash water valve, described sluicing wash water valve is arranged on bottom described second pipeline section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510587866.1A CN105200194B (en) | 2015-09-15 | 2015-09-15 | RH external refining vacuum systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510587866.1A CN105200194B (en) | 2015-09-15 | 2015-09-15 | RH external refining vacuum systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105200194A true CN105200194A (en) | 2015-12-30 |
| CN105200194B CN105200194B (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510587866.1A Active CN105200194B (en) | 2015-09-15 | 2015-09-15 | RH external refining vacuum systems |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2433517Y (en) * | 2000-07-25 | 2001-06-06 | 崔保山 | Low-level steam injection vacuum device |
| CN2621279Y (en) * | 2003-03-28 | 2004-06-23 | 崔保山 | Drainage cooling device of overhead injector |
| CN201439533U (en) * | 2009-07-10 | 2010-04-21 | 武汉钢铁(集团)公司 | Novel RH vacuum clearing water condensing device |
| JP2010261092A (en) * | 2009-05-11 | 2010-11-18 | Nippon Steel Engineering Co Ltd | Vacuum-degassing apparatus and operating method therefor |
| CN102155439A (en) * | 2011-03-28 | 2011-08-17 | 中国重型机械研究院有限公司 | Vacuum degree regulating system for steam injection pump |
| CN203373387U (en) * | 2013-05-31 | 2014-01-01 | 中冶南方工程技术有限公司 | Vacuum system for vacuum smelting |
| CN203799279U (en) * | 2014-04-18 | 2014-08-27 | 首钢总公司 | Safety water seal |
| CN204609954U (en) * | 2015-02-03 | 2015-09-02 | 大唐淮北发电厂 | Steam turbine vacuum seal arrangement |
-
2015
- 2015-09-15 CN CN201510587866.1A patent/CN105200194B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2433517Y (en) * | 2000-07-25 | 2001-06-06 | 崔保山 | Low-level steam injection vacuum device |
| CN2621279Y (en) * | 2003-03-28 | 2004-06-23 | 崔保山 | Drainage cooling device of overhead injector |
| JP2010261092A (en) * | 2009-05-11 | 2010-11-18 | Nippon Steel Engineering Co Ltd | Vacuum-degassing apparatus and operating method therefor |
| CN201439533U (en) * | 2009-07-10 | 2010-04-21 | 武汉钢铁(集团)公司 | Novel RH vacuum clearing water condensing device |
| CN102155439A (en) * | 2011-03-28 | 2011-08-17 | 中国重型机械研究院有限公司 | Vacuum degree regulating system for steam injection pump |
| CN203373387U (en) * | 2013-05-31 | 2014-01-01 | 中冶南方工程技术有限公司 | Vacuum system for vacuum smelting |
| CN203799279U (en) * | 2014-04-18 | 2014-08-27 | 首钢总公司 | Safety water seal |
| CN204609954U (en) * | 2015-02-03 | 2015-09-02 | 大唐淮北发电厂 | Steam turbine vacuum seal arrangement |
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| CN105200194B (en) | 2018-03-13 |
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