CN204663957U - High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump - Google Patents
High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump Download PDFInfo
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- CN204663957U CN204663957U CN201520362770.0U CN201520362770U CN204663957U CN 204663957 U CN204663957 U CN 204663957U CN 201520362770 U CN201520362770 U CN 201520362770U CN 204663957 U CN204663957 U CN 204663957U
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Abstract
The utility model discloses High Temperature High Pressure and force hot water circuit mechanical sealing device used for pump, comprise pump shaft, heat exchanger, pump shaft is equipped with pump shaft cover, pump shaft cover is connected with pump cover, pump cover and main are sealed seat and are connected, the outside end of main envelope seat is provided with secondary envelope seat, Seal cage one is provided with between main envelope seat and pump shaft overlap, the dynamic structure of main envelope of threaded pump is provided with in Seal cage one, main seals quiet structure, main envelope seat offers Inner eycle liquid entering hole, Inner eycle liquid outlet, Inner eycle liquid entering hole, Inner eycle liquid outlet connects with heat exchanger respectively, Seal cage two is provided with between secondary envelope seat and pump shaft overlap, be provided with secondary envelope in Seal cage two and move structure, the quiet structure of secondary envelope, main envelope seat offers cooling water outer circulation liquid entering hole and outer circulation liquid outlet, described cooling water is provided by power station's water purification pipeline.Solve using effect in prior art undesirable, maintenance cost is high, and working life is short, the technical problem that price is high.
Description
Technical field
The utility model relates to hot water circulating pump technical field, particularly relates to a kind of High Temperature High Pressure and forces hot water circuit mechanical sealing device used for pump.
Background technique
In prior art, the mandatory hot water circulating pump of High Temperature High Pressure is widely used in the system regions such as metallurgy, electric power, light textile, oil, chemical industry, rubber, heating, and conveying High Temperature High Pressure hot water and physicochemical properties are similar to the liquid medium of water.High-temperature-hot-water easily produces vaporization, causes the liquid film of mechanical seal end surface to destroy, and makes dynamic and static ring two contact end face and is in semi-dry friction or dry condition, easily causes two contact jaw surface wears to cause seal failure, reduces the life-span.Meanwhile, due to water, pressure for vaporization is high at high operating temperatures, and machine envelope must bear higher pressure, and because this increasing the design difficulty of sealing system, traditional sealing configuration can not meet the requirement of the mandatory hot water circulating pump of High Temperature High Pressure far away.
A kind of sealing system device is given in " Design and Analysis of high-temperature high-pressure hot-water circulating pump seal arrangement " described in " universal machine " (supplementary issue in 2007) P60, sealing system device is made up of one-level floating seal, combination seal, packing seal and the auxiliary cooling system that rinses, they with the use of the reliability, the Security that improve sealing system largely.But in actual using process due to high temperature to affect packing leaking serious, often termination of pumping must change filler, labor intensity is large, and materials consumption is also larger.
The high pressure hot water circulating pump mechanical seal design described in P14 calculated and gave a kind of tandem mechanical seal in transformation " mechanical facilities of irrigation and drainage " the 25th volume the 2nd phase (in March, 2007), and media end sealing adopts refractory metal bellows mechanical seal; Secondary seal adopts ordinary construction mechanical seal, and carries out flushing cooling to Seal cage, adopts API PLAN52 (nitrogen external pressurized) to sealflush scheme.This device can be suitable for high temperature and high pressure condition principle, but actual Use Limitation fruit is unsatisfactory, and maintenance cost is high, price, and working life is short.
Model utility content
The purpose of this utility model is exactly the problems referred to above existed for solving prior art, there is provided a kind of High Temperature High Pressure to force hot water circuit mechanical sealing device used for pump, solve using effect in prior art undesirable, maintenance cost is high, working life is short, the technical problem that price is high.
The technological scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump, comprise pump shaft, heat exchanger, described pump shaft is set with pump shaft cover in the impeller side near High Temperature High Pressure hot aqueous medium, the end face cooperation place that described pump shaft and pump shaft overlap is provided with O RunddichtringO, described pump shaft cover is connected with pump cover, described pump cover seals seat in the bearing housing side away from impeller with main and is connected, the outside end of described main envelope seat is provided with secondary envelope seat, Seal cage one is provided with between described main envelope seat and pump shaft overlap, described Seal cage one inside is provided with the dynamic structure of main envelope of threaded pump successively, main seals quiet structure, the dynamic structure of main envelope coordinates with the cylindrical that pump shaft overlaps, main seals the inner hole that quiet structure and main seal seat, the dynamic structure of main envelope coordinates with the axial end that main seals quiet structure, described main envelope seat offers Inner eycle liquid entering hole, Inner eycle liquid outlet, described Inner eycle liquid entering hole, Inner eycle liquid outlet connects with heat exchanger respectively, Seal cage two is provided with between described secondary envelope seat and pump shaft overlap, described Seal cage two inside is disposed with secondary envelope and moves structure, the quiet structure of secondary envelope, secondary envelope is moved structure and is coordinated with the outer cylinder end face that pump shaft overlaps, the interior annular slot fit of the quiet structure of secondary envelope and secondary envelope seat, secondary envelope is moved structure and is coordinated with the axial end of the quiet structure of secondary envelope, described main envelope seat offers cooling water outer circulation liquid entering hole and outer circulation liquid outlet, described cooling water is provided by power station's water purification pipeline.
The dynamic structure of described main envelope comprises rotating seat, bellows springs, rotating ring floating seat, hard alloy seal ring, described main is sealed quiet structure and is comprised sealing rubber cover, stationary ring hard alloy seal ring is provided with in the endoporus of sealing rubber cover, described rotating seat is fixed on axle sleeve by Cock screw, rotating seat axially rear side is provided with bellows springs, bellows springs supports rotating ring floating seat, rotating ring floating seat one end is embedded with hard alloy seal ring, under the effect of bellows springs power, hard alloy seal ring and stationary ring hard alloy seal ring fit tightly.
Described rotating ring floating seat and shaft room are designed with O RunddichtringO, and rotating ring floating seat Excircle machining has steep-lead thread groove, and main is sealed and kept rational gap between seat and become the circulation that helical pump can carry out medium.
One end that described rotating ring floating seat is contacting with stationary ring hard alloy seal ring is provided with inclined-plane.
Described secondary envelope is moved structure and is comprised rotating ring, O RunddichtringO, pin, and rotating ring is graphite annulus, and the interior looping pit of rotating ring and shaft room are provided with O RunddichtringO, and rotating ring is connected by pin with axle sleeve, transmit torque by pin.
The quiet structure of described secondary envelope comprises stationary ring floating seat, stationary ring supporting base, described stationary ring floating seat is embedded with carbide ring, stationary ring floating seat loads stationary ring supporting base, be provided with multiple spring in the spring fixed hole of stationary ring supporting base, spring makes the sliding axially of stationary ring floating seat, keeps carbide ring and rotating ring to fit tightly.
Be provided with O RunddichtringO in the annular groove outside of described stationary ring floating seat, the periphery of stationary ring floating seat is sealed and matched by the endoporus of O RunddichtringO and stationary ring supporting base.
Restrictor ring is provided with between described pump shaft cover and pump cover.
The beneficial effects of the utility model:
1. the utility model adopts primary seal and secondary seal combination in series to use, and adopts double seal, ensures that medium does not leak; Be designed with the automatic cycle that helical pump device realizes cooling medium simultaneously, ensure that the reliability of sealing, extend working life, reduce the waste that human and material resources and the resource caused was keeped in repair and changed in sealing, solve using effect in prior art undesirable, maintenance cost is high, and working life is short, the technical problem that price is high.
2. the utility model have employed dual-cooled, strengthens cooling medium and the circulation of sealflushing cooling water, greatly enhances sealing cooling effect; The utility model adopts heat exchanger to take away fricative heat between seal face, reduces the temperature of Seal cage simultaneously, improves the reliability of sealing, extend the working life of sealing.
3. be provided with restrictor ring between pump shaft cover and pump cover, can reduce the pressure passed over from pump chamber inner high voltage medium, control media enters the quantity of Seal cage one.
4. main envelope seat is provided with Inner eycle liquid entering hole and Inner eycle liquid outlet, and hot water is cooled by heat exchanger.
5. rotating ring floating seat is provided with in the one end contacted with stationary ring hard alloy seal ring and is not more than 45 ° of inclined-planes, to decompose axial force, effectively can decompose the axial force that in Seal cage, liquid medium applies machine envelope plane, improve the life-span of machine envelope spring.
6. rotating ring floating seat one end is embedded with hard alloy seal ring, and under the effect of bellows springs power, hard alloy seal ring and stationary ring hard alloy seal ring fit tightly, and keeps sealing state.Rotating ring floating seat and shaft room are designed with O RunddichtringO, and rotating ring floating seat Excircle machining has steep-lead thread groove, and main is sealed and kept rational gap between seat and become the circulation that helical pump can carry out medium.
7. rotating ring is connected by pin with axle sleeve, torque is transmitted by pin, transmission of power is reliable, multiple spring is provided with in the spring fixed hole of stationary ring supporting base, ensure sliding axially of stationary ring floating seat, carbide ring and rotating ring are fitted tightly, in the annular groove outside of stationary ring floating seat, is provided with O RunddichtringO, the periphery of stationary ring floating seat is sealed and matched by the endoporus of O RunddichtringO and stationary ring supporting base, and sealing reliability is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the system schematic of Fig. 1;
Fig. 3 is the primary seal structural drawing of the threaded pump of the utility model;
Fig. 4 is secondary seal structural drawing of the present utility model.
In figure, 1, pump shaft, 2, heat exchanger, 3, pump shaft cover, 4, pump cover, 5, main envelope seat, 6, secondary envelope seat, 7, Seal cage one, 8, the dynamic structure of main envelope, 9, main seals quiet structure, 10, Inner eycle liquid entering hole, 11, Inner eycle liquid outlet, 12, Seal cage two, 13, secondary envelope moves structure, 14, the quiet structure of secondary envelope, 15, restrictor ring, 16, outer circulation liquid entering hole, 17, outer circulation liquid outlet, 18, O RunddichtringO, 81, rotating seat, 82, Cock screw, 83, bellows springs, 84, rotating ring floating seat, 85, O RunddichtringO, 86, hard alloy seal ring, 87, be not more than 45 ° of inclined-planes, 91, stationary ring hard alloy seal ring, 92, sealing rubber cover, 131, rotating ring, 132, O RunddichtringO, 133, pin, 141, carbide ring, 142, O RunddichtringO, 143, stationary ring floating seat, 144, stationary ring supporting base, 145, little spring.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figures 1 to 4, a kind of High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump, comprise pump shaft 1, heat exchanger 2, described pump shaft 1 is set with pump shaft cover 3 in the impeller side near High Temperature High Pressure hot aqueous medium, the end face cooperation place that described pump shaft 1 and pump shaft overlap 3 is provided with O RunddichtringO 18, described pump shaft cover 3 is connected with pump cover 4, described pump cover 4 seals seat 5 in the bearing housing side away from impeller with main and is connected, the outside end of described main envelope seat 5 is provided with secondary envelope seat 6, described main envelope seat 5 and pump shaft are provided with Seal cage 1 between overlapping 3, described Seal cage 1 inside is provided with the dynamic structure 8 of main envelope of threaded pump successively, main seals quiet structure 9, the dynamic structure 8 of main envelope coordinates with the cylindrical that pump shaft overlaps 3, main seals the inner hole that quiet structure 9 and main seal seat 5, the dynamic structure 8 of main envelope coordinates with the axial end that main seals quiet structure 9, described main envelope seat 5 offers Inner eycle liquid entering hole 10, Inner eycle liquid outlet 11, described Inner eycle liquid entering hole 10, Inner eycle liquid outlet 11 connects with heat exchanger 2 respectively, described secondary envelope seat 6 and pump shaft are provided with Seal cage 2 12 between overlapping 3, described Seal cage 2 12 inside is disposed with secondary envelope and moves structure 13, the quiet structure 14 of secondary envelope, the outer cylinder end face that secondary envelope moves structure 13 and pump shaft overlaps 3 coordinates, the interior annular slot fit of the quiet structure of secondary envelope 14 and secondary envelope seat 6, secondary envelope is moved structure 13 and is coordinated with the axial end of the quiet structure 14 of secondary envelope, described main envelope seat 5 offers cooling water outer circulation liquid entering hole 16 and outer circulation liquid outlet 17, described cooling water is provided by power station's water purification pipeline.Restrictor ring 15 is provided with between described pump shaft cover 3 and pump cover 4.
The described dynamic structure 8 of main envelope comprises rotating seat 81, bellows springs 83, rotating ring floating seat 84, hard alloy seal ring 86, described main is sealed quiet structure 9 and is comprised sealing rubber cover 92, stationary ring hard alloy seal ring 91 is provided with in the endoporus of sealing rubber cover 92, described rotating seat 81 is fixed on axle sleeve 3 by Cock screw 82, rotating seat 81 axially rear side is provided with bellows springs 83, bellows springs 83 promotes rotating ring floating seat 84 and slides on axle sleeve 3, rotating ring floating seat 84 one end is embedded with hard alloy seal ring 86, under the effect of bellows springs 83 spring force, hard alloy seal ring 86 and stationary ring hard alloy seal ring 91 fit tightly, keep sealing state.O RunddichtringO 85 is designed with between rotating ring floating seat 84 and axle sleeve 3, rotating ring floating seat 84 Excircle machining has steep-lead thread groove, steep-lead thread groove and main are sealed between seat 5 endoporus has rational gap, when hot water pump shaft rotates, thread groove produces axial lifting force to liquid medium thus forms the circulation that helical pump can carry out medium, one end that described rotating ring floating seat 84 contacts with stationary ring hard alloy seal ring 91 is provided with and is not more than 45 ° of inclined-planes 87, to decompose axial force.
Secondary seal is the shorter plane type mechanical seal of axial distance, comprises secondary envelope and moves structure 13, the quiet structure 14 of secondary envelope.Described secondary envelope is moved structure 13 and is comprised rotating ring 131, O RunddichtringO 132, pin 133, rotating ring 131 is graphite annulus, be provided with O RunddichtringO 132 between the interior looping pit of rotating ring 131 and axle sleeve 3, rotating ring 131 is connected by pin 133 with axle sleeve 3, transmits torque by pin 133.
The quiet structure 14 of described secondary envelope comprises stationary ring floating seat 143, stationary ring supporting base 144, described stationary ring floating seat 143 is embedded with carbide ring 141, stationary ring floating seat 143 loads stationary ring supporting base 144, multiple little spring 145 is provided with in the spring fixed hole of stationary ring supporting base 144, ensure sliding axially of stationary ring floating seat 143, carbide ring 141 and rotating ring 131 are fitted tightly.Be provided with O RunddichtringO 142 in the annular groove outside of stationary ring floating seat 143, the periphery of stationary ring floating seat 143 is sealed and matched by the endoporus of O RunddichtringO 142 with stationary ring supporting base 144.
Utility model works principle is as follows: be designed to two-stage sealing, and the connecting to use of primary seal and secondary seal controls Seal cage temperature rise well.Sealing have employed combination cooling flushing scheme and Inner eycle cool cycles rinse with outer circulation chilling rinse with the use of.In Seal cage, primary seal rotating ring cylindrical is designed with helical pump device, by the helical pump of primary seal rotating ring cylindrical, the hot water pump in chamber is delivered in heat exchanger in Seal cage, after heat exchange, water temperature is down to less than 70 DEG C, dynamic and static ring junction in Seal cage is got back to again from loop head, iterative cycles, makes Seal cage be in low temperature environment all the time.Sealing outside is designed with chilling liquid entering hole and liquid port, be designed with helical pump device at this end position of axle sleeve simultaneously, seal quiet structure inner circle with main and keep reasonable clearance, the helical pump direction of rotation direction and primary seal rotating ring floating seat cylindrical is contrary, the circulation of primary seal and secondary seal cooling water can be carried out, by chilling, primary seal is cooled again, and the effect of cooling is also served to secondary seal.Primary seal rotating ring floating seat is designed to be not more than 45 ° of inclined-planes in the one end contacted with stationary ring hard alloy seal ring, has effectively decomposed the axial force that in Seal cage, liquid medium applies machine envelope plane, has improve the life-span of machine envelope spring.Primary seal rotating ring bullet shaped element part is designed to wavy spring, can bear higher temperature and pressure.Secondary seal is designed to the shorter mechanical seal of axial dimension, and playing shaped element part is many spring structures, can adapt to different turning to.
The utility model adopts primary seal and secondary seal combination in series to use, be designed with the automatic cycle that helical pump device realizes cooling medium simultaneously, ensure that the reliability of sealing, extend working life, reduce the waste that human and material resources and the resource caused was keeped in repair and changed in sealing.
By reference to the accompanying drawings the embodiment of model utility is described although above-mentioned; but the restriction not to the utility model protection domain; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (8)
1. a High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump, it is characterized in that, comprise pump shaft, heat exchanger, described pump shaft is set with pump shaft cover in the impeller side near High Temperature High Pressure hot aqueous medium, the end face cooperation place that described pump shaft and pump shaft overlap is provided with O RunddichtringO, described pump shaft cover is connected with pump cover, described pump cover seals seat in the bearing housing side away from impeller with main and is connected, the outside end of described main envelope seat is provided with secondary envelope seat, Seal cage one is provided with between described main envelope seat and pump shaft overlap, described Seal cage one inside is provided with the dynamic structure of main envelope of threaded pump successively, main seals quiet structure, the dynamic structure of main envelope coordinates with the cylindrical that pump shaft overlaps, main seals the inner hole that quiet structure and main seal seat, the dynamic structure of main envelope coordinates with the axial end that main seals quiet structure, described main envelope seat offers Inner eycle liquid entering hole, Inner eycle liquid outlet, described Inner eycle liquid entering hole, Inner eycle liquid outlet connects with heat exchanger respectively, Seal cage two is provided with between described secondary envelope seat and pump shaft overlap, described Seal cage two inside is disposed with secondary envelope and moves structure, the quiet structure of secondary envelope, secondary envelope is moved structure and is coordinated with the outer cylinder end face that pump shaft overlaps, the interior annular slot fit of the quiet structure of secondary envelope and secondary envelope seat, secondary envelope is moved structure and is coordinated with the axial end of the quiet structure of secondary envelope, described main envelope seat offers cooling water outer circulation liquid entering hole and outer circulation liquid outlet, described cooling water is provided by power station's water purification pipeline.
2. High Temperature High Pressure as claimed in claim 1 forces hot water circuit mechanical sealing device used for pump, it is characterized in that, the dynamic structure of described main envelope comprises rotating seat, bellows springs, rotating ring floating seat, hard alloy seal ring, described main is sealed quiet structure and is comprised sealing rubber cover, stationary ring hard alloy seal ring is provided with in the endoporus of sealing rubber cover, described rotating seat is fixed on axle sleeve by Cock screw, rotating seat axially rear side is provided with bellows springs, bellows springs supports rotating ring floating seat, rotating ring floating seat one end is embedded with hard alloy seal ring, under the effect of bellows springs power, hard alloy seal ring and stationary ring hard alloy seal ring fit tightly.
3. High Temperature High Pressure as claimed in claim 2 forces hot water circuit mechanical sealing device used for pump, it is characterized in that, described rotating ring floating seat and shaft room are designed with O RunddichtringO, rotating ring floating seat Excircle machining has steep-lead thread groove, steep-lead thread groove and main seal the gap between seat endoporus with setting, when hot water pump shaft rotates, thread groove produces axial lifting force to liquid medium, thus forms the circulation that helical pump can carry out medium.
4. High Temperature High Pressure as claimed in claim 2 forces hot water circuit mechanical sealing device used for pump, and it is characterized in that, one end that described rotating ring floating seat is contacting with stationary ring hard alloy seal ring is provided with inclined-plane.
5. High Temperature High Pressure as claimed in claim 1 forces hot water circuit mechanical sealing device used for pump, it is characterized in that, described secondary envelope is moved structure and is comprised rotating ring, O RunddichtringO, pin, rotating ring is graphite annulus, the interior looping pit of rotating ring and shaft room are provided with O RunddichtringO, rotating ring is connected by pin with axle sleeve, transmits torque by pin.
6. High Temperature High Pressure as claimed in claim 1 forces hot water circuit mechanical sealing device used for pump, it is characterized in that, described level is sealed quiet structure and is comprised stationary ring floating seat, stationary ring supporting base, described stationary ring floating seat is embedded with carbide ring, stationary ring floating seat loads stationary ring supporting base, be provided with multiple spring in the spring fixed hole of stationary ring supporting base, spring makes the sliding axially of stationary ring floating seat, keeps carbide ring and rotating ring to fit tightly.
7. High Temperature High Pressure as claimed in claim 6 forces hot water circuit mechanical sealing device used for pump, it is characterized in that, be provided with O RunddichtringO in the annular groove outside of stationary ring floating seat, the periphery of stationary ring floating seat is sealed and matched by the endoporus of O RunddichtringO and stationary ring supporting base.
8. High Temperature High Pressure as claimed in claim 1 forces hot water circuit mechanical sealing device used for pump, it is characterized in that, is provided with restrictor ring between described pump shaft cover and pump cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362770.0U CN204663957U (en) | 2015-05-30 | 2015-05-30 | High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362770.0U CN204663957U (en) | 2015-05-30 | 2015-05-30 | High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663957U true CN204663957U (en) | 2015-09-23 |
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ID=54134345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520362770.0U Withdrawn - After Issue CN204663957U (en) | 2015-05-30 | 2015-05-30 | High Temperature High Pressure forces hot water circuit mechanical sealing device used for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663957U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863890A (en) * | 2015-05-30 | 2015-08-26 | 山东钢铁股份有限公司 | Mechanical seal device for high-temperature and high-pressure forced hot water circulating pump |
| CN109751277A (en) * | 2019-02-27 | 2019-05-14 | 沈阳北碳密封有限公司 | Self priming pump positive/negative-pressure operating condition mechanical seal |
-
2015
- 2015-05-30 CN CN201520362770.0U patent/CN204663957U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863890A (en) * | 2015-05-30 | 2015-08-26 | 山东钢铁股份有限公司 | Mechanical seal device for high-temperature and high-pressure forced hot water circulating pump |
| CN104863890B (en) * | 2015-05-30 | 2017-04-19 | 山东钢铁股份有限公司 | Mechanical seal device for high-temperature and high-pressure forced hot water circulating pump |
| CN109751277A (en) * | 2019-02-27 | 2019-05-14 | 沈阳北碳密封有限公司 | Self priming pump positive/negative-pressure operating condition mechanical seal |
| CN109751277B (en) * | 2019-02-27 | 2024-02-13 | 沈阳北碳密封有限公司 | Positive and negative pressure working condition mechanical seal for self-priming pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150923 Effective date of abandoning: 20170419 |
|
| AV01 | Patent right actively abandoned |