CN204784731U - Freezing compressor unit closes sealing system - Google Patents
Freezing compressor unit closes sealing system Download PDFInfo
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- CN204784731U CN204784731U CN201520311188.1U CN201520311188U CN204784731U CN 204784731 U CN204784731 U CN 204784731U CN 201520311188 U CN201520311188 U CN 201520311188U CN 204784731 U CN204784731 U CN 204784731U
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- shell
- hole
- tooth
- comb tooth
- cooling water
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Abstract
The utility model discloses a freezing compressor unit closes sealing system belongs to sealed method of magnetic current body rotary main shaft and device type, is applicable to from low temperature to high temperature, carries sealing of various liquid medium under the conditions such as high pressure and high rotational speed. The utility model discloses comprise magnetic conduction axle sleeve, helixseal shell, comb tooth labyrinth seals shell, end terminal, permanent magnet, holder, gland, soket head cap screw, shell and sealing washer etc. Helixseal shell and helicla flute on the magnetic conduction axle sleeve form the helixseal, and annular tooth on the comb tooth labyrinth seals shell and magnetic conduction axle sleeve form comb tooth labyrinth seals, and it is sealed that end terminal, permanent magnet, the magnetic current body and annular profile of tooth on the magnetic conduction axle sleeve become the magnetic current body. Wherein the helixseal plays the effect of decompression, and comb tooth labyrinth seals plays the effect of lowering the temperature for the sealed work of the primary seal magnetic current body is more stable, life -span of having improved whole sealing device.
Description
Technical field
The utility model relates to magnetic fluid rotary main shaft technical field of sealing technology, is specifically related to a kind of refrigerant condenser combination sealing system.
Background technique
Refrigerant condenser is a kind of pump class device of pumping liquid, and the transmission main shaft of this pump mainly adopts mechanical seal at present, and it mainly exists following defect:
(1) mechanical seal structure is complicated, mounting or dismounting inconvenience, to the surface finishment of rotating ring and stationary ring and flatness requirements high, not easily process, cost is higher;
(2) mechanical seal is installed with replacing cumbersome, and requires that workman has certain mounting technique level;
(3), when there is contingency accident, mechanical seal process is more difficult;
(4) mechanical seal one-time investment is high;
(5) mechanical seal is not zero leakage, has the liquid of pollution inapplicable for poisonous and harmful,
(6) when temperature is lower, the leakage rate of mechanical seal can increase, and even causes seal failure.
Model utility content
The utility model overcomes the deficiencies in the prior art, provides a kind of refrigerant condenser combination sealing system, is applicable to from low temperature to high temperature, the sealing of conveying liquid body medium under the condition such as high pressure and high rotating speed.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of refrigerant condenser combination sealing system, it comprises magnetic conduction axle sleeve, shell, spiral seal shell, comb tooth labyrinth seal shell, axially locating block, seal ring and magnet fluid sealing assembly; Described shell one end is fixedly connected with gland; The other end, by Flange joint, is fixed on seal chamber; Described spiral seal shell is positioned at the media end near seal fluid, prevents circumference from rotating by the pin-and-hole on spiral seal shell and the bayonet fittings on shell; Described comb tooth labyrinth seal shell is between described spiral seal shell and described magnet fluid sealing assembly; Prevent circumference from rotating by the pin-and-hole on comb tooth labyrinth seal shell and the bayonet fittings on spiral seal shell; Described magnetic conductive axis puts the helical tooth being provided with and becoming sealing configuration with described spiral seal hull shape; Described spiral seal shell is provided with discharge orifice, the leakage fluid body opening centering on described discharge orifice and described shell;
Described comb tooth labyrinth seal shell is provided with the annular tooth forming sealing configuration with described magnetic conduction axle sleeve; Described comb tooth labyrinth seal shell is provided with the first hole, the second hole centering on described first hole and described shell; Described comb tooth labyrinth seal shell is provided with octal, the cooled gas inlet hole centering on described octal and described shell; Described magnetic conductive axis puts the magnetic conductive axis collar-shaped tooth being provided with and forming sealing configuration with described magnet fluid sealing assembly.
Further technological scheme is octal and described first hole axisymmetric.
Further technological scheme is that comb tooth labyrinth seal shell is provided with the 3rd hole, the 5th hole centering on described 3rd hole and described shell; Described comb tooth labyrinth seal shell is provided with the 4th hole, the 6th hole centering on described 4th hole and described shell.
Further technological scheme is that magnet fluid sealing assembly comprises the first pole shoe, the second pole shoe, permanent magnet, retainer and magnetic liquid; Described permanent magnet is arranged between described first pole shoe and described second pole shoe; Described retainer is arranged at outside described permanent magnet.
Further technological scheme shell is provided with the first cooling water intake hole, the second cooling water intake hole and the 3rd cooling water intake hole, and the first cooling water intake hole, the second cooling water intake hole, the 3rd cooling water intake hole are communicated with; Described first cooling water intake hole, the second cooling water intake hole and the groove of the 3rd cooling water intake hole and described first pole shoe and the groove of the second pole shoe form cooling water passage.
Further technological scheme shell is provided with the first osculum and the second osculum; Described shell is provided with seven apertures in the human head; Described first osculum, the second osculum are communicated with seven apertures in the human head.
Further technological scheme is that gland is fixing on the housing by socket head screw.
Further technological scheme is that magnetic conductive axis puts and is provided with the first one-sided bevel tooth and the second one-sided bevel tooth, and described first one-sided bevel tooth, the second one-sided bevel tooth and described second pole shoe, described first pole shoe, permanent magnet and magnetic fluid form magnetic fluid sealing structure.
Further technological scheme is helical tooth is rectangular coil tooth.
Further technological scheme is the annular tooth on comb tooth labyrinth seal shell is rectangle; Described magnetic conductive axis collar-shaped tooth is one-sided bevel tooth.
Sealing principle of the present utility model is: the spiral chute that spiral seal shell and magnetic conductive axis put forms spiral seal, annular tooth on comb tooth labyrinth seal shell and magnetic conduction axle sleeve form the labyrinth seal of comb tooth, and the annular tooth that pole shoe, permanent magnet, magnetic fluid and magnetic conductive axis put forms magnet fluid sealing.Wherein spiral seal plays decompression, and the labyrinth seal of comb tooth plays cooling, makes the work of primary seal magnet fluid sealing more stable, improves the life-span of whole seal arrangement.
Compared with prior art, the beneficial effects of the utility model are: the utility model compensate for the deficiency of mechanical seal, be applicable to from low temperature to high temperature, the conveying of high pressure, the various liquid medium of high speed conditions lower seal, achieve zero leakage, extend service life of equipment, easy to maintenance, reduce cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in detail.
As shown in Figure 1, according to an embodiment of the present utility model, the present embodiment discloses a kind of refrigerant condenser combination sealing system, and its overall structure is: comprise magnetic conduction axle sleeve 1, shell 30, spiral seal shell 3, comb tooth labyrinth seal shell 7, seal ring 4, axially locating block 22 and magnet fluid sealing assembly; Magnet fluid sealing assembly comprises the first pole shoe 12, second pole shoe 18, permanent magnet 14, retainer 15 and magnetic liquid; Permanent magnet 14 is arranged between the first pole shoe 12 and the second pole shoe 18; Retainer 15 is arranged at outside described permanent magnet 14.Shell 30 one end is fixedly connected with gland 19 by socket head screw 20; The other end, by Flange joint, is fixed on seal chamber; Seal ring 3 is positioned at the link position of flange and seal chamber, stops media fluid toward outward leakage; Axially locating block 22 is fixed on main shaft 31 by interference fit, prevents magnetic conduction axle sleeve 1 from moving axially; Comb tooth labyrinth seal shell 7 is between spiral seal shell 3 and magnet fluid sealing assembly; Magnetic conduction axle sleeve 1 is provided with the helical tooth 2 forming sealing configuration with spiral seal shell 3; Spiral seal shell 3 is provided with discharge orifice 29, leakage fluid body opening 28 centering on discharge orifice and shell; Comb tooth labyrinth seal shell 7 is provided with the annular tooth forming sealing configuration with magnetic conduction axle sleeve; Comb tooth labyrinth seal shell 7 is provided with the first hole, hole 8, first 8 and the second hole 9 centering on shell; Comb tooth labyrinth seal shell 7 is provided with octal 27, octal 27 and cooled gas inlet hole 26 centering on shell; Magnetic conduction axle sleeve 1 is provided with the magnetic conductive axis collar-shaped tooth forming sealing configuration with magnet fluid sealing assembly, concrete, magnetic conductive axis collar-shaped tooth comprises the first one-sided bevel tooth 36 and the second one-sided bevel tooth 21; First one-sided bevel tooth and the first pole shoe, the second one-sided bevel tooth and the second pole shoe, permanent magnet and magnetic fluid form magnetic fluid sealing structure.
Concrete, first the spiral seal shell 3 be located near media fluid end loads in shell 30, adopt transition fit, pass the power of coming by gland 19 and carry out axial restraint, being coordinated by the pin-and-hole 34 on spiral seal shell 3 and the pin 35 on shell 30 prevents circumference from rotating, ensure discharge orifice 29 and leakage fluid body opening 28 centering, when main shaft 31 is static, consider to there is radial clearance between the helical tooth (or being expressed as spiral chute) 2 that magnetic conductive axis puts and spiral seal shell 3, the dielectric fluid cognition of sealing is leaked from radial clearance, due to spiral seal shell having discharge orifice 29, the leakage fluid body opening 28 of the liquid stream of now leaking on discharge orifice 29 and shell gets back to catch box, when main shaft 31 rotates, the now similar spiral chute pump of helical tooth 2, makes fluid produce pressure head, stops pump inner fluid to leak, plays the effect of decompression and seal fluid.
Be positioned in the middle of spiral seal shell 3 and magnet fluid sealing assembly first pole shoe (or being expressed as pole shoe I) 12 is comb tooth labyrinth seal shell 7, it and magnetic conduction axle sleeve 1 form the labyrinth seal of comb tooth, being coordinated by the pin-and-hole 32 on comb tooth labyrinth seal shell 7 and the pin 33 on spiral seal shell prevents circumference from rotating, ensure the first hole 8 on comb tooth labyrinth seal shell 7 and the second hole 9 centering on shell 30, octal 27 on comb tooth labyrinth seal shell 7 and cooled gas inlet hole 26 centering on shell 30, comb tooth labyrinth seal shell 7 one aspect plays a part fixing and compresses spiral seal shell 3, the power transmitted by gland 19 on the other hand carries out self axial restraint.
The effect increasing the labyrinth seal of comb tooth is: on the one hand when the temperature of main shaft is higher, can pass into cooled gas and cool magnetic conduction axle sleeve and main shaft; On the other hand when magnetic liquid easily reacts with the media fluid of sealing, the cooled gas at this moment passed into can play the effect of isolated sealing medium liquid.
Because the labyrinth seal of comb tooth is not subject to the restriction of rotational speed and temperature, be non-contact seals, friction power loss is minimum, increases the gas of the salable elevated pressures of comb number of teeth order.When cooled gas, from the cooled gas inlet hole 26 shell 30, the octal 27 flowed through on comb tooth labyrinth seal shell 7 enters in the cavity of comb tooth labyrinth seal shell 7, due to the seal action of comb tooth labyrinth seal, most of cooled gas is made to flow through the cavity of comb tooth labyrinth seal, realize the cooling to magnetic conduction axle sleeve 1 and main shaft 31, then flow out from the first hole 8 comb tooth labyrinth seal shell 7 and the second hole 9 on shell, the gas of a small amount of leakage can the 4th hole 10 on the 3rd hole 5 on comb tooth labyrinth seal shell 7 and the 5th hole 6 on shell 30 and comb tooth labyrinth seal shell 7 and the 6th hole 11 on shell 30 flow out, reduce the pressure of follow-up seal chamber.
Close external environment condition end is magnet fluid sealing assembly, by magnetic conduction axle sleeve 1, first pole shoe 12, second pole shoe (or being expressed as pole shoe II) 18, permanent magnet 14, retainer 15 and magnetic liquid composition, the second cooling water intake hole 16 on shell 30, the pole shoe I of the first cooling water intake hole 13 and the 3rd cooling water intake hole 17 and magnet fluid sealing assembly, the groove composition cooling water passage of pole shoe II, cooling water flows out through seven apertures in the human head 24 after the first osculum 23 shell 30 and the second osculum 25 after the cooling of magnet fluid sealing assembly, ensure that the stable operation of magnet fluid sealing.
Below in conjunction with accompanying drawing, concrete introduction is done to the sealing principle of the present embodiment refrigerant condenser combination sealing system.
First, the present embodiment loads in shell 30 in one end of medium in pump chamber by spiral seal shell 3, the power passed on comb tooth labyrinth seal shell 7 by gland 19 is fixed spiral seal shell 3, when highly pressurised liquid flows through spiral seal shell 3, under the counter-force effect of the helical tooth 2 on magnetic conduction axle sleeve 1, realize the sealing to liquid medium and decompression, the discharge orifice 29 can opened by spiral seal shell 3 from a small amount of liquid of the clearance leakage between helical tooth 2 top spiral seal shell 3 and magnetic conduction axle sleeve 1 flows out to catch box with the leakage fluid body opening 28 on the shell be mated, play the effect of decompression and seal fluid.
Then, when the temperature of main shaft is higher, now can pass into cooled gas by the cooled gas inlet hole 26 on shell 30, octal 27 on comb tooth labyrinth seal shell 7 enters comb tooth labyrinth seal cavity, cooled gas expands through the laggard fascinated uterine cavity of throttling narrow slit of comb tooth labyrinth seal shell 7 and magnetic conduction axle sleeve 1, the speed energy that gas flow formed through narrow slit is consumed with this, by this principle through repeatedly throttling and expansion produce resistance, stop gas to external leakage, thus can realize cooling magnetic conduction axle sleeve and main shaft, then the first hole 8 on comb tooth labyrinth seal shell 7 and the second hole 9 on shell are flowed out, thus reach the object of sealing cooled gas, the cooled gas of a small amount of leakage can be flowed out by the 3rd hole 5 on comb tooth labyrinth seal shell 7 and the 4th hole 10, realize decompression.
Finally, in the outside of comb tooth labyrinth seal shell 7, magnet fluid sealing assembly is installed, magnet fluid sealing assembly is by magnetic conduction axle sleeve 1, pole shoe I 12, pole shoe II 18, permanent magnet 14, retainer 15 and magnetic liquid composition, for guaranteeing in high-revolving situation, the heating value of magnetic fluid work is not too large, shell 30 flows through the first cooling water intake hole 13 of cooling water on shell 30 and the pole shoe I 12 of the 3rd cooling water intake hole 17 and magnet fluid sealing assembly in the second cooling water intake hole 16, the groove composition cooling water passage of pole shoe II 18, cooling water flows out from the first osculum 23 shell 30 and the second osculum 25 after the cooling of magnet fluid sealing assembly, water tank is flowed out to through seven apertures in the human head 24, ensure that the stable operation of magnet fluid sealing, thus achieve the zero leakage of sealing, prevent the poisonous of sealing from having pollution medium liquid to the pollution of environment.The present embodiment is not only applicable to refrigerant condenser, and is applicable to the sealing of carrying various media fluid.
The present embodiment forms the seal arrangement of band support by magnetic conduction axle sleeve, spiral seal shell, comb tooth labyrinth seal shell, pole shoe I, pole shoe II, permanent magnet, retainer, gland, socket head screw, shell and seal ring etc., ensure that the matching gap of each sealed member when main shaft rotates.
Spoken of in this manual " embodiment ", " another embodiment ", " embodiment ", etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and be included at least one embodiment of the application's generality description.Multiple place occurs that statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, when describing specific features, structure or a feature in conjunction with any one embodiment, what advocate is also drop in scope of the present utility model to realize this feature, structure or feature in conjunction with other embodiments.
Although the multiple explanatory embodiment here with reference to model utility is described the utility model, but, should be appreciated that, those skilled in the art can design a lot of other amendment and mode of execution, these amendments and mode of execution will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of the open claim of the application, multiple modification and improvement can be carried out to the constituent elements of subject combination layout and/or layout.Except the modification of carrying out constituent elements and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (10)
1. a refrigerant condenser combination sealing system, is characterized in that: it comprises magnetic conduction axle sleeve (1), shell (30), spiral seal shell (3), comb tooth labyrinth seal shell (7), axially locating block (22), seal ring (4) and magnet fluid sealing assembly; Described shell (30) one end is fixedly connected with gland (19); The other end, by Flange joint, is fixed on seal chamber; Described spiral seal shell (3) is positioned at the media end near seal fluid, to be coordinated prevent circumferential rotation by the pin-and-hole (34) on spiral seal shell (3) with the pin (35) on shell (30); Described comb tooth labyrinth seal shell (7) is positioned between described spiral seal shell (3) and described magnet fluid sealing assembly; Being coordinated with the pin (33) on spiral seal shell (3) by the pin-and-hole (32) in comb tooth labyrinth seal shell (7) prevents circumference from rotating; Described magnetic conduction axle sleeve (1) is provided with the helical tooth (2) forming sealing configuration with described spiral seal shell (3); Described spiral seal shell (3) is provided with discharge orifice (29), leakage fluid body opening (28) centering on described discharge orifice and described shell; Described comb tooth labyrinth seal shell (7) is provided with the annular tooth forming sealing configuration with described magnetic conduction axle sleeve; Described comb tooth labyrinth seal shell (7) is provided with the first hole (8), described first hole (8) and the second hole (9) centering on described shell; Described comb tooth labyrinth seal shell (7) is provided with octal (27), described octal (27) and cooled gas inlet hole (26) centering on described shell; Described magnetic conduction axle sleeve (1) is provided with the magnetic conductive axis collar-shaped tooth forming sealing configuration with described magnet fluid sealing assembly.
2. refrigerant condenser combination sealing system according to claim 1, is characterized in that described octal (27) and described first hole (8) axisymmetric.
3. refrigerant condenser combination sealing system according to claim 1, it is characterized in that described comb tooth labyrinth seal shell (7) is provided with the 3rd hole (5), the 5th hole (6) centering on described 3rd hole and described shell; Described comb tooth labyrinth seal shell (7) is provided with the 4th hole (10), the 6th hole (11) centering on described 4th hole and described shell.
4. refrigerant condenser combination sealing system according to claim 1, is characterized in that described magnet fluid sealing assembly comprises the first pole shoe (12), the second pole shoe (18), permanent magnet (14), retainer (15) and magnetic liquid; Described permanent magnet (14) is arranged between described first pole shoe (12) and described second pole shoe (18); Described retainer (15) is arranged at described permanent magnet (14) outside.
5. refrigerant condenser combination sealing system according to claim 4, it is characterized in that described shell being provided with the first cooling water intake hole (13), the second cooling water intake hole (16) and the 3rd cooling water intake hole (17), the first cooling water intake hole, the second cooling water intake hole, the 3rd cooling water intake hole are communicated with; Described first cooling water intake hole (13), the second cooling water intake hole (16) and the 3rd cooling water intake hole (17) form cooling water passage with the groove of described first pole shoe and the groove of the second pole shoe.
6. the refrigerant condenser combination sealing system according to claim 4 or 5, is characterized in that described shell being provided with the first osculum (23) and the second osculum (25); Described shell is provided with seven apertures in the human head (24); Described first osculum, the second osculum are communicated with seven apertures in the human head.
7. refrigerant condenser combination sealing system according to claim 1, is characterized in that described gland (19) is fixing on the housing by socket head screw (20).
8. refrigerant condenser combination sealing system according to claim 4, it is characterized in that described magnetic conduction axle sleeve (1) being provided with the first one-sided bevel tooth (36) and the second one-sided bevel tooth (21), described first one-sided bevel tooth, the second one-sided bevel tooth and described second pole shoe, described first pole shoe, permanent magnet and magnetic fluid form magnetic fluid sealing structure.
9. refrigerant condenser combination sealing system according to claim 1, is characterized in that described helical tooth (2) is rectangular coil tooth.
10. refrigerant condenser combination sealing system according to claim 1, is characterized in that the annular tooth on described comb tooth labyrinth seal shell is rectangle; Described magnetic conductive axis collar-shaped tooth is one-sided bevel tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311188.1U CN204784731U (en) | 2015-05-14 | 2015-05-14 | Freezing compressor unit closes sealing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311188.1U CN204784731U (en) | 2015-05-14 | 2015-05-14 | Freezing compressor unit closes sealing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204784731U true CN204784731U (en) | 2015-11-18 |
Family
ID=54524783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520311188.1U Withdrawn - After Issue CN204784731U (en) | 2015-05-14 | 2015-05-14 | Freezing compressor unit closes sealing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204784731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864100A (en) * | 2015-05-14 | 2015-08-26 | 自贡兆强密封制品实业有限公司 | Combined sealing system of refrigerating compressor |
-
2015
- 2015-05-14 CN CN201520311188.1U patent/CN204784731U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864100A (en) * | 2015-05-14 | 2015-08-26 | 自贡兆强密封制品实业有限公司 | Combined sealing system of refrigerating compressor |
| CN104864100B (en) * | 2015-05-14 | 2016-09-21 | 自贡兆强密封制品实业有限公司 | Refrigerant condenser combination sealing system |
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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: 20151118 Effective date of abandoning: 20160921 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |