CN204553314U - The axle sleeve that double mechanical seal friction pair is cooled and centrifugal pump cooling system thereof - Google Patents
The axle sleeve that double mechanical seal friction pair is cooled and centrifugal pump cooling system thereof Download PDFInfo
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- CN204553314U CN204553314U CN201520188527.1U CN201520188527U CN204553314U CN 204553314 U CN204553314 U CN 204553314U CN 201520188527 U CN201520188527 U CN 201520188527U CN 204553314 U CN204553314 U CN 204553314U
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Abstract
A kind of double mechanical seal friction pair is cooled axle sleeve and centrifugal pump cooling system, axle sleeve includes the axle sleeve outside the pump shaft being enclosed within centrifugal pump, left side seal ring and right side seal ring is respectively arranged with between the two ends and pump shaft of axle sleeve inner peripheral surface, left side seal ring and right side seal ring are embedded on the inner peripheral surface of axle sleeve respectively, the Five-channel of the cooling liquid that circulates is formed between the inner peripheral surface of axle sleeve and pump shaft outer circumferential face, axle sleeve closes on the four-way that the corresponding Five-channel in media end moving sealing ring place is formed with the cooling liquid passage outside connection Five-channel and axle sleeve.The utility model nestles up this position producing thermal source of friction pair by the double mechanical seal media end of centrifugal pump and is just in time on the flow channel of cooling liquid, allow that a part of cooling liquid flow along the axial direction of axle sleeve, make this partially liq constantly produce convection current cooling here.Thus thoroughly eliminate because of mechanical face seals of centrifugal pumps media end friction pair there is steam flashing and the leakage that occurs.
Description
Technical field
The utility model relates to a kind of cooling system of centrifugal pump.Particularly relate to a kind of double mechanical seal friction pair is cooled axle sleeve and centrifugal pump cooling system.
Background technique
Geo-stationary containing media end mechanical sealing friction pairs cooling liquid in the neighbourhood in double mechanical seal flushing scheme system relative to the position of this heating source of friction pair in API682 Appendix D (standard annex) Plays flushing scheme and assistant metal component, plan 52 is sealflushed as an example with API682 Appendix D (standard annex) Plays flushing scheme and assistant metal component Plays, the object of this scheme is to cool and taking away media end mechanical sealing friction pairs frictional heat produced at work and a part of medium passes the heat of coming.But sometimes still do not eliminate moment localized hyperthermia, especially the fluid that saturation vapor pressure is lower is carried, frictional heat in time loose not going out there will be steam flashing and occurs that the material of short time gaseous state removes the dynamic and static ring of impulse machine sealing friction pair, and moment pushes dynamic and static ring open mutually even.Just look like between the dynamic and static ring of mechanical seal, produce blast equally.Now generation is leaked, once leak, friction pair is cooled at once, and the material of gaseous state disappears at once, and at this moment under the spring force and pressure medium (namely closing force) double action of mechanical seal, the dynamic and static ring of mechanical seal is fitted suddenly again and collides; Then flash distillation has occurred again, and dynamic and static ring impacts once more.Go round and begin again, at first multiple week, circulation is got up endless, until mechanical seal thoroughly damages.This situation is very general, once occur, not only make leakage rate increase, and mechanical seal will soon be lost efficacy.Change mechanical seal bothersome expensive again, if problem is not solved, even if changed new mechanical seal, also can damage very soon.
Set forth as an example with the double mechanical seals of installing in the face of the back of the body of adopting of standard seal flushing plan in prior art API682 Appendix D (standard annex) the Plays flushing scheme shown in Fig. 1 and assistant metal component 52 and plan 53 (fluid cushion double-contact wets sealing 2CW-CW and fluid-tight liquid level to the contact-type of back structure wet sealing 3CW-FB).Wherein the position of reference character A indication is the position to cooling that double mechanical seal media end nestles up that friction pair needs most, cooling liquid is only that and then the synchronous original place of pump shaft rotates herein in the prior art, do not produce axial flow, the eternal geo-stationary in mutual alignment of this part cooling liquid and the dynamic and static ring of pump shaft, axle sleeve and mechanical seal can be said.Because cooling liquid keeps motionless all the time in original place, so the friction pair of the mode cooling medium end mechanical seal of convection current cannot be relied on, always allow the friction between media end mechanical sealing linkage ring and mechanical sealing static ring be in the transition point occurring flash temperature condition, cause the improper damage of mechanical seal.
Summary of the invention
Technical problem to be solved in the utility model is, there is provided a kind of double mechanical seal friction pair is cooled axle sleeve and centrifugal pump cooling system, double mechanical seal media end can be allowed to nestle up this position producing thermal source of friction pair be just in time on the flow channel of cooling liquid, allow that a part of cooling liquid flow along the axial direction of axle sleeve, make this partially liq constantly produce convection current cooling here.
The technological scheme that the utility model adopts is: a kind of axle sleeve that double mechanical seal friction pair is cooled, include the axle sleeve outside the pump shaft being enclosed within centrifugal pump, left side seal ring and right side seal ring is respectively arranged with between the two ends and described pump shaft of described axle sleeve inner peripheral surface, described left side seal ring and right side seal ring are embedded on the inner peripheral surface of described axle sleeve respectively, the Five-channel of the cooling liquid that can circulate is formed between the inner peripheral surface of described axle sleeve and described pump shaft outer circumferential face, described Five-channel is made up of the groove on the axle sleeve madial wall be formed between left side seal ring and right side seal ring, described axle sleeve closes on the four-way that the corresponding described Five-channel in media end moving sealing ring place is formed with the cooling liquid passage be communicated with outside described Five-channel and axle sleeve.
The described Five-channel be formed between pump shaft outer circumferential face and axle sleeve inner peripheral surface is formed along the axis of described pump shaft.
A kind of centrifugal pump cooling system with the axle sleeve making double mechanical seal friction pair cool, include pump case, part is positioned at described pump case and the pump shaft having axle sleeve is overlapped in outside, be connected to the side of pump case in turn and be enclosed within described axle sleeve and be formed with the first sealing gland and second sealing gland of certain space with described axle sleeve, to be arranged between axle sleeve with pump case and to be the media end moving sealing ring be fixedly connected with described axle sleeve, to be arranged between axle sleeve with the first sealing gland and to be the media end stationary seal ring be fixedly connected with the first described sealing gland, described media end stationary seal ring connects for contacting with described media end moving sealing ring, to be arranged in the space between axle sleeve with the second sealing gland and to be the atmosphere end moving sealing ring be fixedly connected with and the atmosphere end stationary seal ring be fixedly connected with described second sealing gland with described axle sleeve, described atmosphere end moving sealing ring connects for contacting with described atmosphere end stationary seal ring, be enclosed within the pump efficiency ring outside described atmosphere end moving sealing ring, the restrictor ring be fixedly connected with the first described sealing gland is provided with in space between axle sleeve with the first sealing gland, at the first described sealing gland, media end stationary seal ring, restrictor ring, media end moving sealing ring, axle sleeve, pump shaft, be formed with one between atmosphere end moving sealing ring and the second sealing gland to be connected by exterior line and be positioned at outside heat exchanger and can make heat exchanger fluid while with rotary component synchronous rotary, the cooling liquid circulation canal of heat exchange directly can be carried out again along the surface of contact of axial flow to media end stationary seal ring and media end moving sealing ring of rotary component.
Described cooling liquid circulation canal includes and is connected successively: to be formed on the first described sealing gland and upper end-hole connects the first passage of described heat exchanger liquid entering hole or liquid outlet by exterior line, be formed in the second channel between described restrictor ring and media end stationary seal ring, be formed in described media end moving sealing ring and the third channel between media end stationary seal ring and described axle sleeve, to be formed in described axle sleeve and four-way near media end moving sealing ring side, be formed in the Five-channel between described pump shaft outer circumferential face and described axle sleeve inner peripheral surface, be integrally formed in the Hexamermis spp in described axle sleeve and between described restrictor ring and atmosphere end moving sealing ring, to be formed between described atmosphere end moving sealing ring and the second described sealing gland and to run through described pump efficiency ring the 7th passage, be formed in the second described sealing gland and upper end-hole connects the 8th passage of described heat exchanger liquid outlet or liquid entering hole by exterior line.
The described Five-channel be formed between pump shaft outer circumferential face and axle sleeve inner peripheral surface is formed in the groove on the axle sleeve madial wall between left side seal ring between described pump shaft outer circumferential face and axle sleeve inner peripheral surface and right side seal ring, and described left side seal ring and right side seal ring are embedded on the inner peripheral surface of described axle sleeve respectively.
The described Five-channel be formed between pump shaft outer circumferential face and axle sleeve inner peripheral surface is formed along the axis of described pump shaft.
Of the present utility model double mechanical seal friction pair is cooled axle sleeve and centrifugal pump cooling system, the double mechanical seal media end of centrifugal pump can be allowed to nestle up this position producing thermal source of friction pair be just in time on the flow channel of cooling liquid, allow that a part of cooling liquid flow along the axial direction of axle sleeve, make this partially liq constantly produce convection current cooling here.Thus thoroughly eliminate because of mechanical face seals of centrifugal pumps media end friction pair there is steam flashing and the leakage that occurs.
Accompanying drawing explanation
Fig. 1 is the convection current cooling system structure schematic diagram of prior art centrifugal pump;
Fig. 2 is the convection current cooling system structure schematic diagram of the double mechanical seal media end friction pair of centrifugal pump of the present utility model;
Fig. 3 is the utility model axle portion's convection current cooling system structure schematic diagram.
1: pump shaft 2: axle sleeve
3: media end moving sealing ring 4: media end stationary seal ring
5: pump case 6: the first sealing gland
7: restrictor ring 8: the second sealing gland
9: pump efficiency ring 10: atmosphere end moving sealing ring
11: atmosphere end stationary seal ring 12: exterior line
13: heat exchanger 14: left side seal ring
15: right side seal ring 201: the first leads to
202: second channel 203: third channel
204: the four-way 205: the Five-channels
206: the Hexamermis spp 207: the seven passages
208: the eight passages
Embodiment
Axle sleeve double mechanical seal friction pair being cooled to of the present utility model below in conjunction with embodiment and accompanying drawing and centrifugal pump cooling system thereof are described in detail.
Of the present utility model double mechanical seal friction pair is cooled axle sleeve and centrifugal pump cooling system, that standard seal is rinsed on the double mechanical seal basis that the system that configures double mechanical seal in the works adopts in original standard A PI682 Appendix D (standard annex) Plays flushing scheme and assistant metal component, only between two end faces of its mechanical seal, increase by a throttle mechanism again, meanwhile the axle sleeve of mechanical seal transform (as shown in Figure 2) just passable.
As shown in Figure 3, the axle sleeve that double mechanical seal friction pair is cooled of the present utility model, include the axle sleeve 2 outside the pump shaft 1 being enclosed within centrifugal pump, left side seal ring 14 and right side seal ring 15 is respectively arranged with between the two ends and described pump shaft 1 of described axle sleeve 2 inner peripheral surface, described left side seal ring 14 and right side seal ring 15 are embedded on the inner peripheral surface of described axle sleeve 2 respectively, the Five-channel 205 of the cooling liquid that can circulate is formed between the inner peripheral surface of described axle sleeve 2 and described pump shaft 1 outer circumferential face, described Five-channel 205 is made up of the groove on axle sleeve 2 madial wall be formed between left side seal ring 14 and right side seal ring 15, described axle sleeve 2 closes on the four-way 204 that the corresponding described Five-channel 205 in media end moving sealing ring 3 place is formed with the cooling liquid passage be communicated with outside described Five-channel 205 and axle sleeve 2.The described Five-channel 205 be formed between pump shaft 1 outer circumferential face and axle sleeve 2 inner peripheral surface is formed along the axis of described pump shaft 1.
As Fig. 2, shown in Fig. 3, the centrifugal pump cooling system with the axle sleeve making double mechanical seal friction pair cool of the present utility model, include pump case 5, part is positioned at described pump case 5 and the pump shaft 1 having axle sleeve 2 is overlapped in outside, be connected to the side of pump case 5 in turn and be enclosed within described axle sleeve 2 and be formed with the first sealing gland 6 and the second sealing gland 8 of certain space with described axle sleeve 2, to be arranged between axle sleeve 2 with pump case 5 and with the media end moving sealing ring 3 of described axle sleeve 2 for being fixedly connected with, to be arranged between axle sleeve 2 with the first sealing gland 6 and with the described media end stationary seal ring 4 of the first sealing gland 6 for being fixedly connected with, described media end stationary seal ring 4 connects for contacting with described media end moving sealing ring 3, to be arranged in the space between axle sleeve 2 with the second sealing gland 8 and to be the atmosphere end moving sealing ring 10 be fixedly connected with and the atmosphere end stationary seal ring 11 be fixedly connected with described second sealing gland 8 with described axle sleeve 2, described atmosphere end moving sealing ring 10 connects for contacting with described atmosphere end stationary seal ring 11, be enclosed within the pump efficiency ring 9 outside described atmosphere end moving sealing ring 10, the restrictor ring 7 be fixedly connected with the first described sealing gland 6 is provided with in space between axle sleeve 2 with the first sealing gland 6, at the first described sealing gland 6, media end stationary seal ring 4, restrictor ring 7, media end moving sealing ring 3, axle sleeve 2, pump shaft 1, be formed with one between atmosphere end moving sealing ring 10 and the second sealing gland 8 to be connected by exterior line 12 and be positioned at outside heat exchanger 13 and can make heat exchanger fluid while with rotary component synchronous rotary, the cooling liquid circulation canal of heat exchange directly can be carried out again along the surface of contact B of axial flow to media end stationary seal ring 4 and media end moving sealing ring 3 of rotary component.
Described cooling liquid circulation canal includes and is connected successively: to be formed on the first described sealing gland 6 and upper end-hole connects the first passage 201 of described heat exchanger 13 liquid entering hole or liquid outlet by exterior line 12, be formed in the second channel 202 between described restrictor ring 7 and media end stationary seal ring 4, be formed in described media end moving sealing ring 3 and the third channel 203 between media end stationary seal ring 4 and described axle sleeve 2, to be formed in described axle sleeve 2 and four-way 204 near media end moving sealing ring 3 side, be formed in the Five-channel 205 between described pump shaft 1 and described axle sleeve 2, the described Five-channel 205 be formed between pump shaft 1 outer circumferential face and axle sleeve 2 inner peripheral surface is formed along the axis of described pump shaft 1, and, the described Five-channel 205 be formed between pump shaft 1 outer circumferential face and axle sleeve 2 inner peripheral surface is formed in the groove on axle sleeve 2 madial wall between left side seal ring 14 between described pump shaft 1 outer circumferential face and axle sleeve 2 inner peripheral surface and right side seal ring 15, described left side seal ring 14 and right side seal ring 15 are embedded on the inner peripheral surface of described axle sleeve 2 respectively.Be integrally formed in the Hexamermis spp 206 in described axle sleeve 2 and between described restrictor ring 7 and atmosphere end moving sealing ring 10 in addition, to be formed between described atmosphere end moving sealing ring 10 and the second described sealing gland 8 and to run through described pump efficiency ring 9 the 7th passage 207, being formed in the second described sealing gland 8 and upper end-hole connects the 8th passage 208 of described heat exchanger 13 liquid outlet or liquid entering hole by exterior line 12.
Of the present utility model double mechanical seal friction pair is cooled axle sleeve and centrifugal pump cooling system, be manufactured with fluid passage between mechanical seal sleeve and pump shaft, and allow fluid flow through from here and to form closed-loop path.Namely in Fig. 2, the place of position B is just in time on the route of cooling fluid flowing, so just makes the friction pair of media end mechanical seal (rubbing surface between media end moving sealing ring 3 and media end stationary seal ring 4) fully obtain cooling from the convection current of cooling fluid.Be furnished with in the Seal cage between the liquid entering hole and these two passages of liquid outlet of heat exchanger 13 restrictor ring 7 just make cooling fluid enter Seal cage after major part flow according in the cooling liquid circulation canal designed, walk full distance to flow out from the liquid outlet of cooling liquid circulation canal more later, substantially avoid fluid just just to flow away from liquid outlet, because do not carry out cooling procedure in this process from liquid entering hole at once ultrashort road of coming in.Also passable with mechanical seal herein, but with restrictor ring replacement, mechanical seal can save axial space, structure is simple, cost is low, the process-cycle is short.
Of the present utility model double mechanical seal friction pair is cooled axle sleeve and the working procedure of centrifugal pump cooling system as follows:
Cooling fluid flows out through heat exchanger 13, when flowing through first logical 201 successively, cools the first sealing gland 6; When flowing through second channel 202, respectively the first sealing gland 6, media end stationary seal ring 4, restrictor ring 7 and axle sleeve 2 are cooled; When flowing through third channel 203, respectively media end stationary seal ring 4, media end moving sealing ring 3 (especially to media end stationary seal ring 4 and the media end moving sealing ring 3 rubbing surface B point place between them) and axle sleeve 2 are cooled; When flowing through four-way 204, media end moving sealing ring 3, axle sleeve 2 and pump shaft 1 are cooled; When flowing through Five-channel 205, pump shaft 1, axle sleeve 2 are cooled; When flowing through Hexamermis spp 206 and the 7th passage 207, respectively restrictor ring 7, atmosphere end moving sealing ring 10, pump efficiency ring 9, first sealing gland 6 and the second sealing gland 8 are cooled; When flowing through the 8th passage 208, second sealing gland 8 is cooled, last cooling fluid flows out through after exterior line 12 inflow heat exchanger 13 carries out heat exchange from the 8th passage 208, flow out again the heat exchange carrying out next round with centrifugal pump from heat exchanger 13, so circulate.
Claims (6)
1. the axle sleeve that double mechanical seal friction pair is cooled, include the axle sleeve (2) in pump shaft (1) outside being enclosed within centrifugal pump, left side seal ring (14) and right side seal ring (15) is respectively arranged with between the two ends and described pump shaft (1) of described axle sleeve (2) inner peripheral surface, described left side seal ring (14) and right side seal ring (15) are embedded on the inner peripheral surface of described axle sleeve (2) respectively, it is characterized in that, the Five-channel (205) of the cooling liquid that can circulate is formed between the inner peripheral surface of described axle sleeve (2) and described pump shaft (1) outer circumferential face, described Five-channel (205) is made up of the groove on axle sleeve (2) madial wall be formed between left side seal ring (14) and right side seal ring (15), upper and close on the corresponding described Five-channel (205) in media end moving sealing ring (3) place and be formed with the four-way (204) being communicated with described Five-channel (205) and the cooling liquid passage in axle sleeve (2) outside at described axle sleeve (2).
2. the axle sleeve that double mechanical seal friction pair is cooled according to claim 1, it is characterized in that, the described Five-channel (205) be formed between pump shaft (1) outer circumferential face and axle sleeve (2) inner peripheral surface is formed along the axis of described pump shaft (1).
3. one kind has the centrifugal pump cooling system of the axle sleeve that double mechanical seal friction pair is cooled described in claim 1 or 2, include pump case (5), part is positioned at described pump case (5) and the pump shaft (1) having axle sleeve (2) is overlapped in outside, be connected to the side of pump case (5) in turn and to be enclosed within described axle sleeve (2) upper and be formed with the first sealing gland (6) and second sealing gland (8) of certain space with described axle sleeve (2), to be arranged between axle sleeve (2) with pump case (5) and with the media end moving sealing ring (3) of described axle sleeve (2) for being fixedly connected with, to be arranged between axle sleeve (2) with the first sealing gland (6) and with the media end stationary seal ring (4) of described the first sealing gland (6) for being fixedly connected with, described media end stationary seal ring (4) connects for contacting with described media end moving sealing ring (3), to be arranged in the space between axle sleeve (2) with the second sealing gland (8) and to be the atmosphere end moving sealing ring (10) be fixedly connected with and the atmosphere end stationary seal ring (11) be fixedly connected with described second sealing gland (8) with described axle sleeve (2), described atmosphere end moving sealing ring (10) connects for contacting with described atmosphere end stationary seal ring (11), be enclosed within the pump efficiency ring (9) in described atmosphere end moving sealing ring (10) outside, it is characterized in that, the restrictor ring (7) be fixedly connected with described the first sealing gland (6) is provided with in space between axle sleeve (2) with the first sealing gland (6), at described the first sealing gland (6), media end stationary seal ring (4), restrictor ring (7), media end moving sealing ring (3), axle sleeve (2), pump shaft (1), be formed with one between atmosphere end moving sealing ring (10) and the second sealing gland (8) to be connected by exterior line (12) and be positioned at outside heat exchanger (13) and can make heat exchanger fluid while with rotary component synchronous rotary, the cooling liquid circulation canal of heat exchange directly can be carried out again along the surface of contact (B) of axial flow to media end stationary seal ring (4) and media end moving sealing ring (3) of rotary component.
4. the centrifugal pump cooling system with the axle sleeve making double mechanical seal friction pair cool according to claim 3, it is characterized in that, described cooling liquid circulation canal includes and is connected successively: be formed in that described the first sealing gland (6) is upper and upper end-hole connects the first passage (201) of described heat exchanger (13) liquid entering hole or liquid outlet by exterior line (12), be formed in the second channel (202) between described restrictor ring (7) and media end stationary seal ring (4), be formed in described media end moving sealing ring (3) and the third channel (203) between media end stationary seal ring (4) and described axle sleeve (2), to be formed in described axle sleeve (2) and four-way (204) near media end moving sealing ring (3) side, be formed in the Five-channel (205) between described pump shaft (1) outer circumferential face and described axle sleeve (2) inner peripheral surface, be integrally formed in the Hexamermis spp (206) in described axle sleeve (2) and between described restrictor ring (7) and atmosphere end moving sealing ring (10), to be formed between described atmosphere end moving sealing ring (10) and described the second sealing gland (8) and to run through described pump efficiency ring (9) the 7th passage (207), be formed in described the second sealing gland (8) and upper end-hole connects the 8th passage (208) of described heat exchanger (13) liquid outlet or liquid entering hole by exterior line (12).
5. the centrifugal pump cooling system with the axle sleeve making double mechanical seal friction pair cool according to claim 4, it is characterized in that, the described Five-channel (205) be formed between pump shaft (1) outer circumferential face and axle sleeve (2) inner peripheral surface is formed in the groove on axle sleeve (2) madial wall that is positioned between left side seal ring (14) between described pump shaft (1) outer circumferential face and axle sleeve (2) inner peripheral surface and right side seal ring (15), described left side seal ring (14) and right side seal ring (15) are embedded on the inner peripheral surface of described axle sleeve (2) respectively.
6. the centrifugal pump cooling system of the axle sleeve that having according to claim 4 or 5 makes double mechanical seal friction pair cool, it is characterized in that, the described Five-channel (205) be formed between pump shaft (1) outer circumferential face and axle sleeve (2) inner peripheral surface is formed along the axis of described pump shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188527.1U CN204553314U (en) | 2014-10-15 | 2015-03-31 | The axle sleeve that double mechanical seal friction pair is cooled and centrifugal pump cooling system thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594104 | 2014-10-15 | ||
| CN2014205941045 | 2014-10-15 | ||
| CN201520188527.1U CN204553314U (en) | 2014-10-15 | 2015-03-31 | The axle sleeve that double mechanical seal friction pair is cooled and centrifugal pump cooling system thereof |
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| Publication Number | Publication Date |
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| CN204553314U true CN204553314U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520188527.1U Active CN204553314U (en) | 2014-10-15 | 2015-03-31 | The axle sleeve that double mechanical seal friction pair is cooled and centrifugal pump cooling system thereof |
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| CN (1) | CN204553314U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895825A (en) * | 2014-10-15 | 2015-09-09 | 邢宇 | A shaft sleeve for cooling a double mechanical seal friction pair and a centrifugal pump cooling system having the same |
| CN105673579A (en) * | 2016-03-16 | 2016-06-15 | 邢宇 | High-pressure-resistant washing system with multiple mechanical seals |
| CN113446256A (en) * | 2017-08-29 | 2021-09-28 | 株式会社荏原制作所 | Sealing system |
-
2015
- 2015-03-31 CN CN201520188527.1U patent/CN204553314U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895825A (en) * | 2014-10-15 | 2015-09-09 | 邢宇 | A shaft sleeve for cooling a double mechanical seal friction pair and a centrifugal pump cooling system having the same |
| WO2016058457A1 (en) * | 2014-10-15 | 2016-04-21 | 邢宇 | Bushing for cooling dual-side mechanical seal friction pair and centrifugal pump cooling system thereof |
| CN104895825B (en) * | 2014-10-15 | 2017-12-22 | 邢宇 | The axle sleeve and its centrifugal pump cooling system for cooling down double mechanical seal friction pair |
| CN105673579A (en) * | 2016-03-16 | 2016-06-15 | 邢宇 | High-pressure-resistant washing system with multiple mechanical seals |
| CN113446256A (en) * | 2017-08-29 | 2021-09-28 | 株式会社荏原制作所 | Sealing system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin Long Rui Datong fluid control system Co., Ltd. Assignor: Xing Yu Contract record no.: 2017120000043 Denomination of utility model: A shaft sleeve for cooling a double mechanical seal friction pair and a centrifugal pump cooling system having the same Granted publication date: 20150812 License type: Common License Record date: 20170809 |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200605 Address after: No.1 E66, Sizhi Road, Xuefu Industrial Zone, Xiqing District, Tianjin Patentee after: TIANJIN CHANGRUI DATONG FLUID CONTROL SYSTEM Co.,Ltd. Address before: 300192 Tianjin City Bai Di Lu Nankai District Xin Garden 11-3-701 Patentee before: Xing Yu |