CN1318762C - High temperature high pressure hot-water circulating pump - Google Patents

High temperature high pressure hot-water circulating pump Download PDF

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Publication number
CN1318762C
CN1318762C CNB2006100501335A CN200610050133A CN1318762C CN 1318762 C CN1318762 C CN 1318762C CN B2006100501335 A CNB2006100501335 A CN B2006100501335A CN 200610050133 A CN200610050133 A CN 200610050133A CN 1318762 C CN1318762 C CN 1318762C
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CN
China
Prior art keywords
sealing
cooling
temperature
ring
circulating pump
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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.)
Expired - Fee Related
Application number
CNB2006100501335A
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Chinese (zh)
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CN1828063A (en
Inventor
余伟平
许洪元
牟介刚
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ZHEJIANG PUMP GENERAL WORKS CO Ltd
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ZHEJIANG PUMP GENERAL WORKS CO Ltd
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Publication date
Application filed by ZHEJIANG PUMP GENERAL WORKS CO Ltd filed Critical ZHEJIANG PUMP GENERAL WORKS CO Ltd
Priority to CNB2006100501335A priority Critical patent/CN1318762C/en
Publication of CN1828063A publication Critical patent/CN1828063A/en
Application granted granted Critical
Publication of CN1318762C publication Critical patent/CN1318762C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The present invention provides a high temperature high pressure hot-water circulating pump which comprises an impeller, a rotary shaft and a sealing structure of the rotary shaft, wherein a cooling chamber is arranged in the sealing structure of the rotary shaft, and a sealing device is also arranged in the sealing structure of the rotary shaft; the sealing device comprises a floating sealing assembly; a sealing sleeve is arranged at the rear of the floating sealing assembly and has the surface which surrounds the rotary shaft; a filler ring matched with the rotary shaft is arranged at the rear of the surrounding surface; an inner cavity chamber of the sealing structure of the rotary shaft is formed on the back surface of the surrounding surface of the sealing sleeve and is communicated with an inner cavity chamber for cooling. The present invention organically combines the sealing structure and a cooling structure and simplifies the sealing structure of the shaft; the high temperature high pressure hot-water circulating pump can improve sealing and cooling effects simultaneously by methods of throttling, pressure reduction and sealing of the sealing sleeve and the sealing of the filler ring, making the use temperature of the hot-water reach 280 DEG C and the inlet pressure reach 6.4 M Pa; meanwhile, the leakage amount is controlled under the speed of 30ml/min. Due to the adoption of the technical scheme of the present invention, both the manufacture cost and the maintenance of the product are lower.

Description

A kind of high-temperature high-pressure hot-water circulating pump
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, 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.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.
CNB2006100501335A 2006-03-31 2006-03-31 High temperature high pressure hot-water circulating pump Expired - Fee Related CN1318762C (en)

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 CN1828063A (en) 2006-09-06
CN1318762C true CN1318762C (en) 2007-05-30

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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

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CN (1) CN1318762C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
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
CN104454628B (en) * 2014-12-10 2017-01-11 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

Citations (6)

* Cited by examiner, † Cited by third party
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
CN2149520Y (en) * 1993-02-24 1993-12-15 朱照明 Sealing means for high temp. and high pressure 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
US5605436A (en) * 1995-05-24 1997-02-25 Apv Fluid Handling Horsens A/S Centrifugal pump
JPH1163243A (en) * 1997-08-11 1999-03-05 Tsurumi Mfg Co Ltd Lubricating oil holding device on sliding surface of shaft seal device in oil chamber of submergible pump
CN2668890Y (en) * 2003-12-25 2005-01-05 上海化工研究院 High-temperature high-pressure reciprocating pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
US5605436A (en) * 1995-05-24 1997-02-25 Apv Fluid Handling Horsens A/S Centrifugal pump
JPH1163243A (en) * 1997-08-11 1999-03-05 Tsurumi Mfg Co Ltd Lubricating oil holding device on sliding surface of shaft seal device in oil chamber of submergible pump
CN2668890Y (en) * 2003-12-25 2005-01-05 上海化工研究院 High-temperature high-pressure reciprocating pump

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