CN1828063A - High temperature high pressure hot-water circulating pump - Google Patents
High temperature high pressure hot-water circulating pump Download PDFInfo
- Publication number
- CN1828063A CN1828063A CN 200610050133 CN200610050133A CN1828063A CN 1828063 A CN1828063 A CN 1828063A CN 200610050133 CN200610050133 CN 200610050133 CN 200610050133 A CN200610050133 A CN 200610050133A CN 1828063 A CN1828063 A CN 1828063A
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- China
- Prior art keywords
- sealing
- ring
- cooling
- rotating shaft
- pressure hot
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 238000012856 packing Methods 0.000 claims description 20
- 239000000498 cooling water Substances 0.000 claims description 13
- 210000004907 gland Anatomy 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005272 metallurgy Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to a high-temperature high-pressure hot water cycle pump, which comprises a blade wheel, a rotational axle, and a sealing structure of rotational axle. Wherein, the sealing structure comprises a refrigeration room and a sealing device which containing a float sealing assembly, a sealing sheath at the back of said assembly with a surface surrounding the rotational axle, the stuff ring matching a rotational axle at the back of said surrounding surface, and a refrigeration inner chamber connecting the refrigeration room at the surrounding surface. The invention combines the sealing device and the refrigeration device, simplifies the axial sealing structure, which can improve the sealing and cooling effects with decompress sealing of sealing sheath and stuff ring only with one-stage mechanical sealing. The temperature of hot water cycle pump can reach 280Deg. C, the inlet pressure can reach 6.4MPa, and the leaked amount is controlled at 30ml/min, with lower producing and maintenance costs.
Description
Technical field
The present invention relates to be applied to carry the recycle pump of High Temperature High Pressure hot water or liquid medium in the pipeline or loop in metallurgy, electric power, light textile, petrochemical industry, chemical industry, rubber, the heating bootstrap system.
Background technique
In the hot water circuit in metallurgy, electric power, light textile, petrochemical industry, chemical industry, rubber, heating bootstrap system, usually adopt natural circulation and two kinds of forms of pump circulation, adopt its heat energy utilization rate of natural circulation lower, adopt its heat energy utilization rate of pump circulation than higher, can reach 50～60% usually.At home, great majority adopted the form of natural circulation in the past, and the temperature of circulating hot water is generally about 120～195 ℃, so the serviceability temperature to hot water circulating pump requires lower, usually all below 205 ℃, its inlet pressure just can meet the demands smaller or equal to 2.0Mpa.And the pump circulation form, generally about 215～265 ℃, pressure is at 2.5～5.5Mpa for its hot water temperature.Circulating water temperature is high more, and its heat energy utilization rate is just high more, and high more to the usage requirement of recycle pump, the serviceability temperature that requires hot water circulating pump usually is about 265 ℃, and its inlet pressure reaches 5.5Mpa.The high-temperature high-pressure hot-water circulating pump of present domestic use, its axle sealing structure is very unreasonable, it adopts the multi-stage mechanical sealing configuration, or claiming that floating sealing structure seals, cooling chamber is in the periphery of mechanical seal structure, makes that sealing and cooling performance are not high, when serviceability temperature reaches 215 ℃, the hot water that leaks out from shaft sealing greatly about the 10-15 liter/minute about, the high-pressure water heating that leaks out becomes steam and is full of whole workshop, hot water circulating pump can't proper functioning.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high-temperature high-pressure hot-water circulating pump of novel axle sealing structure.For this reason, the present invention is by the following technical solutions: it comprises impeller, rotating shaft, and the sealing configuration of rotating shaft, be provided with cooling chamber in the sealing configuration of rotating shaft, also be provided with seal arrangement in the sealing configuration of rotating shaft, described seal arrangement comprises the floating seal assembly parts, rear at the floating seal assembly parts is provided with stuffing box gland, stuffing box gland has the surface around rotatingshaft, it is bad to be provided with the filler that cooperates with rotating shaft at this rear around the surface, and the sealing configuration of rotating shaft is formed with the cooling inner cavity chamber that is communicated with cooling chamber at sealing ring around the back side on surface.Owing to adopt above technological scheme, the present invention has organically carried out combination with sealing configuration and cooling structure, simplified axle sealing structure, can be under the situation of only using one-level mechanical seal, means by stuffing box gland expenditure and pressure sealing, packing ring sealing improve sealing effect and cooling effect simultaneously, make the serviceability temperature of hot water circulating pump reach 280 degree, inlet pressure reaches 6.4Mpa, simultaneously, leakage rate is controlled at 30 ml/min.And, adopting technological scheme of the present invention, the manufacture cost of product and maintenance cost are all lower.
Description of drawings
Fig. 1 is the generalized section of an embodiment of the present invention.
Fig. 2 is the seal arrangement of Fig. 1, the partial enlarged drawing of rotating shaft part.
Fig. 3 is the generalized section of stuffing box gland embodiment illustrated in fig. 1.
Fig. 4 is the A-A sectional view of Fig. 3.
Embodiment
With reference to accompanying drawing.The present invention includes impeller 1, rotating shaft 2, and the sealing configuration of rotating shaft, be provided with cooling chamber 3 in the sealing configuration of rotating shaft, also be provided with seal arrangement in the sealing configuration of rotating shaft, described seal arrangement comprises the floating seal assembly parts, be provided with stuffing box gland 6 at the rear of floating seal assembly parts, stuffing box gland has the surface 61 around rotatingshaft, be provided with the packing ring 7 that cooperates with rotating shaft at this rear around surface 61, the sealing configuration of rotating shaft is formed with the cooling inner cavity chamber 8 that is communicated with cooling chamber at sealing ring around the back side on surface.
Described in the present invention " rear ", " rear end " are meant the direction that deviates from impeller.
Seal assembly comprises the stage clip 5 of floating ring 4 and floating ring, matches with the front bulkhead 63 of stuffing box gland in the rear end 41 of floating ring 4, and under the effect of stage clip 5 and under the action of pressure, they have played the effect of floating seal, reduces pressure medium.Sealing ring forms the throttling step-down around surface 61 with rotatingshaft 2 and is sealed and matched, further reduce pressure medium, simultaneously, enter around the hot water between surface 61 and the rotatingshaft around 8 pairs of the cooling inner cavity chamber at surperficial 61 back sides and directly to lower the temperature, its the effect cooling chamber outside mechanical seal more in the past, the cooling-down effect of cooling chamber 3 just of the present invention is far better, has prevented that the hot water after the step-down from becoming steam, simultaneously, it can also be lowered the temperature to rotatingshaft.
In order to improve cooling effect, also can be provided with radiating fin 62 at sealing ring around the back side on surface, simultaneously, radiating fin can enhanced leaktightness the rigidity of cover, thereby can reduce stuffing box gland as best one can at wall thickness around the surface, improve cooling effect.
As illustrated in fig. 1 and 2, cooling inner cavity chamber 8 is that the madial wall 31 by stuffing box gland and cooling chamber 3 forms, is provided with the hole 32 that inner cavity chamber 8 and cooling chamber 3 are cooled off in connection at the madial wall 31 of cooling chamber 3.
Packing ring comprises anterior packing ring 71 and rear portion packing ring 72, and after throttling step-down sealing, pressure medium further reduces, and anterior packing ring plays the plugging action to the medium after the further reduction of pressure,
Shutoff through packing ring, the leakage rate of hot water is very little, in order further to improve sealing effect and cooling effect, can be provided with and cool off the rotating shaft cooling water ring 9 that inner cavity chamber communicates between front portion packing ring and rear portion packing ring, it communicates with cooling inner cavity chamber 8, met with cooling water in the cooling water ring by the hot water after anterior packing ring 71 shutoff, the cooling water ring plays the effect of equal pressure drop temperature, make rear portion packing ring 72 can block medium substantially, even micro-dielectric leakage is arranged, can not produce steam yet, thereby guarantee the normal operation of recycle pump.
Described anterior packing ring is formed by expanded graphite circle 73, copper sheet circle 74, high-carbon fibrous loop 75 stacked combination.Like this, improve the intensity of packing ring, increase the service life.
Flow of cooling water route of the present invention be cooling chamber 10 from bearing housing to described cooling chamber 3, enter cooling inner cavity chamber 8 again, discharge from the tap hole 81 that cools off inner cavity chamber 8 then.If cooling water ring 9 is set, cooling water ring 9 communicates with cooling inner cavity chamber 8, cooling water enter cool off water ring after, the cooling water ring of also can flowing through.
Claims (7)
1, a kind of high-temperature high-pressure hot-water circulating pump, comprise impeller, rotating shaft, and the sealing configuration of rotating shaft, be provided with cooling chamber in the sealing configuration of rotating shaft, also be provided with seal arrangement in the sealing configuration of rotating shaft, it is characterized in that described seal arrangement comprises the floating seal assembly parts, rear at the floating seal assembly parts is provided with stuffing box gland, stuffing box gland has the surface around rotatingshaft, be provided with the packing ring that cooperates with rotating shaft at this rear around the surface, the sealing configuration of rotating shaft is formed with the cooling inner cavity chamber that is communicated with cooling chamber at sealing ring around the back side on surface.
2, a kind of high-temperature high-pressure hot-water circulating pump as claimed in claim 1 is characterized in that seal assembly comprises the stage clip of floating ring and floating ring, and the rear end of floating ring cooperates with the front bulkhead of stuffing box gland
3, a kind of high-temperature high-pressure hot-water circulating pump as claimed in claim 1 is characterized in that sealing ring is provided with radiating fin around the back side on surface.
4, a kind of high-temperature high-pressure hot-water circulating pump as claimed in claim 1 is characterized in that packing ring comprises anterior packing ring and rear portion packing ring, is provided with between anterior packing ring and rear portion packing ring and cools off the rotating shaft cooling water ring that inner cavity chamber communicates.
5, a kind of high-temperature high-pressure hot-water circulating pump as claimed in claim 4 is characterized in that described anterior packing ring is formed by expanded graphite circle, copper sheet circle, high-carbon fibrous loop stacked combination.
6, as claim 1,2 or 3 described a kind of high-temperature high-pressure hot-water circulating pumps, it is characterized in that the flow of cooling water route for from the cooling chamber of bearing housing to described cooling chamber, enter cooling inner cavity chamber again, discharge then.
7, a kind of high-temperature high-pressure hot-water circulating pump as claimed in claim 4, it is characterized in that the flow of cooling water route for from the cooling chamber of bearing housing to described cooling chamber, enter cooling inner cavity chamber again, and enter the cooling water ring, discharge then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100501335A CN1318762C (en) | 2006-03-31 | 2006-03-31 | High temperature high pressure hot-water circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100501335A CN1318762C (en) | 2006-03-31 | 2006-03-31 | High temperature high pressure hot-water circulating pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1828063A true CN1828063A (en) | 2006-09-06 |
| CN1318762C CN1318762C (en) | 2007-05-30 |
Family
ID=36946590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100501335A Expired - Fee Related CN1318762C (en) | 2006-03-31 | 2006-03-31 | High temperature high pressure hot-water circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1318762C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994702A (en) * | 2010-12-02 | 2011-03-30 | 南通蓝天石墨设备有限公司 | High-efficiency graphite axial flow pump |
| CN103511324A (en) * | 2012-06-26 | 2014-01-15 | 浙江水泵总厂有限公司 | High-temperature and high-pressure combined-type mechanical sealing structure |
| CN103727072A (en) * | 2013-12-31 | 2014-04-16 | 江苏大学 | Impurity pump machine sealing flushing and bearing cooling device |
| CN104329261A (en) * | 2014-10-22 | 2015-02-04 | 江苏振华泵业制造有限公司 | High temperature distilled water circulating pump |
| CN104454628A (en) * | 2014-12-10 | 2015-03-25 | 襄阳五二五泵业有限公司 | Seal pressure-relief device for pump in coal chemical industry |
| CN104948471A (en) * | 2015-05-20 | 2015-09-30 | 贵州珍酒酿酒有限公司 | Liquid circulation pump for high-temperature wine distilling |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102399U (en) * | 1991-10-07 | 1992-04-22 | 天津市电机总厂 | Seal and bearing lubrication device of supercharging centrifugal pump |
| CN2168972Y (en) * | 1993-02-06 | 1994-06-15 | 沈阳辽东机械密封技术服务公司 | Mechanic sealing of multi-stage centrifugal pump for petrochemistry |
| CN2149520Y (en) * | 1993-02-24 | 1993-12-15 | 朱照明 | Sealing means for high temp. and high pressure pump |
| DK172332B1 (en) * | 1995-05-24 | 1998-03-23 | Apv Fluid Handling Horsens As | Centrifugal pump with shaft seal |
| JP3850521B2 (en) * | 1997-08-11 | 2006-11-29 | 株式会社鶴見製作所 | Lubricating oil retaining device for sliding surface of oil chamber shaft seal device in submersible pump |
| CN2668890Y (en) * | 2003-12-25 | 2005-01-05 | 上海化工研究院 | High-temperature high-pressure reciprocating pump |
-
2006
- 2006-03-31 CN CNB2006100501335A patent/CN1318762C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994702A (en) * | 2010-12-02 | 2011-03-30 | 南通蓝天石墨设备有限公司 | High-efficiency graphite axial flow pump |
| CN103511324A (en) * | 2012-06-26 | 2014-01-15 | 浙江水泵总厂有限公司 | High-temperature and high-pressure combined-type mechanical sealing structure |
| CN103727072A (en) * | 2013-12-31 | 2014-04-16 | 江苏大学 | Impurity pump machine sealing flushing and bearing cooling device |
| CN103727072B (en) * | 2013-12-31 | 2016-04-06 | 江苏大学 | A kind of transh pump machine envelope is rinsed and bearing cooler |
| CN104329261A (en) * | 2014-10-22 | 2015-02-04 | 江苏振华泵业制造有限公司 | High temperature distilled water circulating pump |
| CN104454628A (en) * | 2014-12-10 | 2015-03-25 | 襄阳五二五泵业有限公司 | Seal pressure-relief device for pump in coal chemical industry |
| CN104948471A (en) * | 2015-05-20 | 2015-09-30 | 贵州珍酒酿酒有限公司 | Liquid circulation pump for high-temperature wine distilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1318762C (en) | 2007-05-30 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 Termination date: 20160331 |