CN1318763C - Sealing packing ring combination for high temperature high pressure hot-water circulating pump - Google Patents
Sealing packing ring combination for high temperature high pressure hot-water circulating pump Download PDFInfo
- Publication number
- CN1318763C CN1318763C CNB2006100503449A CN200610050344A CN1318763C CN 1318763 C CN1318763 C CN 1318763C CN B2006100503449 A CNB2006100503449 A CN B2006100503449A CN 200610050344 A CN200610050344 A CN 200610050344A CN 1318763 C CN1318763 C CN 1318763C
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- China
- Prior art keywords
- packing ring
- combination
- ring
- ring combination
- circle
- 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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Links
- 238000012856 packing Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 title abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000498 cooling water Substances 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims description 17
- 229910002804 graphite Inorganic materials 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000009954 braiding Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 240000003936 Plumbago auriculata Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
Images
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- Sealing Devices (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a sealing packing ring combination for a high temperature high pressure hot-water circulating pump, which comprises advanced packing ring combination at the front of a cooling water ring of a rotary shaft and rear-mounted packing ring combination at the rear of the cooling water ring of the rotary shaft, wherein the advanced packing ring combination is formed by the combination and superposition of an expansion graphite ring, a high-carbon fiber ring and a pad ring made of red copper is clamped in the advanced packing ring combination. In the present invention, the packing ring combination are respectively arranged at the front and at the back of the cooling water ring of the water shaft, and the advanced packing ring combination is formed by the combination and superposition of the expansion graphite ring, the high-carbon fiber ring and the pad ring made of red copper. Under the condition of strong extrusion, due to the lubricating property of the present invention self, the friction between the present invention and the rotary shaft or the friction between the present invention and a shaft sleeve is reduced, the abrasion amount is lower, the clogging effect is improved, the strength is high and the service life is long; after the rear-mounted packing ring combination is cooled by the cooling water ring and absorbs or discharges a little amount of high temperature hot water, the rear-mounted packing ring combination can better clog low temperature and low pressure cooling water.
Description
Technical field
The present invention relates to be applied in the pipeline or loop in metallurgy, electric power, light textile, petrochemical industry, chemical industry, rubber, the heating bootstrap system, carry the sealing configuration in the recycle pump of High Temperature High Pressure hot water or liquid medium.
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 import hydraulic pressure just can meet the demands smaller or equal to 2.0MPa.And adopting the pump circulation form, generally about 215～265 ℃, hydraulic 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 import hydraulic pressure reaches 5.5MPa.At present, in the sealing configuration of the R hot water circulating pump of domestic use, generally all be provided with the packing ring combination and force shutoff, the general carbon fiber circle stacked combination that adopts of packing ring combination, this stuffing box packing ring combination, serviceability temperature low relatively (about 126～195 ℃), poor sealing performance, when 215 ℃ of serviceability temperatures, the high-temperature-hot-water that leaks out reach the 10-15 liter/minute, the high-temperature-hot-water that leaks out becomes steam and is full of whole workshop, and hot water circulating pump just can't proper functioning; Adopt bellows mechanical seal to add the combination of external cooler, under High Temperature High Pressure, the big operating mode that fluctuates, easily produce bigger friction and impact force between the dynamic and static ring of mechanical seal, add that external cooling effect is poor, mechanical sealing element very easily weares and teares or damages, cause sealability to reduce (or forfeiture), working life is not long.
Summary of the invention
The stuffing box packing ring that technical problem to be solved by this invention provides the high-temperature high-pressure hot-water circulating pump of the better and longer service life of a kind of sealability makes up.For this reason, the present invention is by the following technical solutions: it comprises that the preposition packing ring combination is located at before the rotating shaft cooling water ring and the rearmounted packing ring behind the rotating shaft cooling water ring make up, described preposition packing ring combination is to be formed by expanded graphite circle and high-carbon fibrous loop stacked combination, and accompanies red copper pad circle therein.
Owing to adopt technique scheme, the present invention is provided with the packing ring combination respectively before and after rotating shaft cooling water ring, adopt the preposition packing ring combination of described expanded graphite circle, high-carbon fibrous loop, the combination of red copper pad, under strong extruding because greasy property own and the frictional force of minimizing and rotating shaft or axle sleeve, reduce wear extent, improve plugging effect, and have higher intensity and working life, after the cooling through cooling off water ring and receiving discharging micro high-temperature hot water, rearmounted packing ring combination is shutoff low-temp low-pressure cooling water preferably.
Description of drawings
Fig. 1 is applied to the structure sectional view of the sealing material combination of high-temperature high-pressure hot-water circulating pump for a kind of embodiment of the present invention.
Fig. 2 is the structure partial enlarged view of Fig. 1.
Embodiment
With reference to accompanying drawing.The present invention includes and be located at preceding preposition packing ring combination of rotating shaft cooling water ring and the rearmounted packing ring combination behind the rotating shaft cooling water ring 4, described preposition packing ring combination is to be formed by expanded graphite circle and high-carbon fibrous loop stacked combination, and accompanies red copper pad circle therein.
" preceding " of the present invention is meant the direction towards impeller, i.e. the left end of Fig. 1, and " back " of the present invention is meant the direction that deviates from impeller, i.e. the right-hand member of Fig. 1.Drawing reference numeral 5 is the rotating shaft of high-temperature high-pressure hot-water circulating pump among Fig. 1.
Described rearmounted packing ring combination is to be formed by carbon fiber circle 3 stacked combination.
Described preposition packing ring combination is formed by some groups of packing ring group stacked combination; The packing ring group that is in the forefront is several expanded graphite circles 11, accompanies red copper pad circle 12 in the expanded graphite circle.Be in the packing ring group at the packing ring group rear of forefront,, be followed successively by high-carbon fibrous loop 21, expanded graphite circle 22, be provided with red copper pad circle 23 behind the expanded graphite circle from A-P.Be provided with two groups of such packing ring groups in the present embodiment.Like this, by their combination and rational Match each other, the using effect that further improves the packing ring combination can increase the service life again.Make the serviceability temperature of hot water circulating pump can reach 280 ℃, inlet pressure and reach 6.4Mpa, simultaneously, leakage rate is controlled at 30 ml/min.
Described in the present invention expanded graphite circle claims the Expanded graphite circle again, be that the high-quality scale is through chemical treatment, the instantaneous expansion modification of high temperature forms, and form through mould compacting with flexible graphite belt, it has good rebound elasticity, chemical stability under the condition of high temperature provides effective seal, and high temperature resistant 800 ℃ of performances are constant.
Described in the present invention high-carbon fibrous loop is meant and adopts high strength, high-modulus (such as, PV=20N/mm
2.m/s) continuous pure elastic graphite fiber forms through the softening processing braiding of carbonization, and this packing mixes infiltration with plumbago and tetrafluoro emulsion; Both had excellent chemical stability and thermal conductivity, higher intensity is arranged again, high temperature resistant 600 ℃ of performances are constant, withstand voltage 25MPa, PH:0～14.
Described in the present invention carbon element (change) fibrous loop is the polypropylene fiber to be handled through high temperature cabonization to form carbon fibre earlier, mixes infiltration and the packing of braiding with the tetrafluoro emulsion again, and high temperature resistant 250 ℃ of performances are constant, withstand voltage 10MPa, PH:0～12.
Claims (4)
1, a kind of stuffing box packing ring of high-temperature high-pressure hot-water circulating pump combination, it is characterized in that it comprises that being located at rotating shaft cools off preceding preposition packing ring combination of water ring and the rearmounted packing ring combination behind the rotating shaft cooling water ring, described preposition packing ring combination is to be formed by expanded graphite circle and high-carbon fibrous loop stacked combination, and accompanies red copper pad circle therein.
2, the stuffing box packing ring of a kind of high-temperature high-pressure hot-water circulating pump as claimed in claim 1 combination is characterized in that described preposition packing ring combination is formed by some groups of packing ring group stacked combination; The packing ring group that is in the forefront is several expanded graphite circles, accompanies red copper pad circle in the expanded graphite circle.
3, the stuffing box packing ring of a kind of high-temperature high-pressure hot-water circulating pump as claimed in claim 2 combination, it is characterized in that being in the packing ring group at the packing ring group rear of forefront, from A-P, be followed successively by high-carbon fibrous loop, expanded graphite circle, be provided with red copper pad circle behind the expanded graphite circle.
4,, it is characterized in that described rearmounted packing ring combination is to be formed by carbon fiber circle stacked combination as the stuffing box packing ring combination of claim 1,2 or 3 described a kind of high-temperature high-pressure hot-water circulating pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100503449A CN1318763C (en) | 2006-04-14 | 2006-04-14 | Sealing packing ring combination for high temperature high pressure hot-water circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100503449A CN1318763C (en) | 2006-04-14 | 2006-04-14 | Sealing packing ring combination for high temperature high pressure hot-water circulating pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1828064A CN1828064A (en) | 2006-09-06 |
| CN1318763C true CN1318763C (en) | 2007-05-30 |
Family
ID=36946591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100503449A Expired - Fee Related CN1318763C (en) | 2006-04-14 | 2006-04-14 | Sealing packing ring combination for high temperature high pressure hot-water circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1318763C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734207A (en) * | 2012-06-21 | 2012-10-17 | 浙江水泵总厂有限公司 | High-temperature boiler feed 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 |
| CN103343855A (en) * | 2013-07-29 | 2013-10-09 | 南通天田机床有限公司 | Hermetical embedded expansion joint |
| CN111648997A (en) * | 2020-06-09 | 2020-09-11 | 长沙佳能通用泵业有限公司 | High-pressure end sealing mechanism of ore pulp multistage centrifugal pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202058U (en) * | 1985-04-21 | 1986-03-19 | 朱雨秀 | Axis sealing device for centrifugal pump |
| CN2049290U (en) * | 1989-02-15 | 1989-12-13 | 董友 | Sealing ring for sewage 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 |
| US5687974A (en) * | 1996-03-15 | 1997-11-18 | Calconn, Inc. | Packing material having expanded graphite dispersed throughout |
| US5806858A (en) * | 1996-03-22 | 1998-09-15 | Garlock, Inc. | Compact five ring stuffing box packing assembly |
| US6273431B1 (en) * | 1999-11-15 | 2001-08-14 | Garlock Inc | Forged valve stem packing set |
-
2006
- 2006-04-14 CN CNB2006100503449A patent/CN1318763C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202058U (en) * | 1985-04-21 | 1986-03-19 | 朱雨秀 | Axis sealing device for centrifugal pump |
| CN2049290U (en) * | 1989-02-15 | 1989-12-13 | 董友 | Sealing ring for sewage 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 |
| US5687974A (en) * | 1996-03-15 | 1997-11-18 | Calconn, Inc. | Packing material having expanded graphite dispersed throughout |
| US5806858A (en) * | 1996-03-22 | 1998-09-15 | Garlock, Inc. | Compact five ring stuffing box packing assembly |
| US6273431B1 (en) * | 1999-11-15 | 2001-08-14 | Garlock Inc | Forged valve stem packing set |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1828064A (en) | 2006-09-06 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 Termination date: 20160414 |
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