CN101220864A - Break-free machine injection and plastic type multipurpose shaft gland - Google Patents
Break-free machine injection and plastic type multipurpose shaft gland Download PDFInfo
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- CN101220864A CN101220864A CNA2008100140603A CN200810014060A CN101220864A CN 101220864 A CN101220864 A CN 101220864A CN A2008100140603 A CNA2008100140603 A CN A2008100140603A CN 200810014060 A CN200810014060 A CN 200810014060A CN 101220864 A CN101220864 A CN 101220864A
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Abstract
The invention provides an injection and molding typed multipurpose shaft seal without shutdown, belonging to the shaft end sealing technical field. The structure of the invention comprises a sealing body in first grade or higher than the first grade; the sealing body in each grade is internally provided with an injection molding hole; the end of the injection molding hole is communicated with the a cirque sealing chamber which is enclosed by the sealing body and a rotation shaft; the two sides of the cirque sealing chamber are provided with a packing chamber; corresponding sealing grease, sealing paste, sealing liquid or solid sealing material can be selectively injected into the injection molding hole according to different sealing parts, pressure and medium, thus preventing the internal and external leakage of the shaft seal. Compared with the prior art, the injection and molding typed multipurpose shaft seal without shutdown of the invention can be widely applied to the shaft end sealing of various rotation equipments in positive pressure and negative pressure, such as steam turbine, generator, water pump, fan, gearbox, etc., and can also be combined with the traditional seals, such as labyrinth seal, packing seal, mechanical seal, magnetic seal, etc. The invention can realize the overall sealing between the sealing body and the shaft, between the sealing body and a sealing sleeve, and between the sealing sleeve and the equipment. The invention can be suitable for the shaft seal of the equipment which is not concentric with the shaft. The sealing body and the sealing sleeve can be made into taper, thus realizing self sealing.
Description
(1) technical field
The present invention relates to a kind of shaft end seal technology, specifically a kind of under non-outage state, can finish the leakage position repair exempt from shut down to annotate, plastic type multipurpose axle envelope.
(2) background technique
The various positive and negative pressure rotating machinerys of prior art, as steam turbine, generator, water pump, blower fan, gearbox etc., the most seal form such as packing, water seal and oil sealing that adopt of its shaft end seal.Because mechanical wear; equipment operation is after a period of time; the sealing effect of its Sealing can be worse and worse; leakage rate also can be increasing accordingly; when leakage rate acquires a certain degree, will be forced to equipment is temporarily stopped, replacing is overhauled at the sealing position; because the particularity of main equipments such as steam turbine, generator tends to cause enormous economic loss in case shut down.If do not shut down, the equipment that Steam loss is big then causes bigger economic loss easily; And the big equipment of leakage of oil amount not only can cause economic loss, also can have very big potential safety hazard.
At present, which technology does not also find both at home and abroad has under the non-outage state of equipment, finishes the reparation at sealing position and changes operation.
(3) summary of the invention
Technical assignment of the present invention is at the deficiencies in the prior art, provide a kind of under the non-outage state of equipment, finish repair to change operation exempt to shut down annotate, plastic type multipurpose axle envelope.
The technical solution adopted for the present invention to solve the technical problems is:
Exempt to shut down notes, plastic type multipurpose axle envelope, comprise the seal that one-level or one-level are above, all have injecting hole in every grade of seal, the terminal communication seals body of injecting hole and the annular sealed chamber that rotating shaft surrounds, the both sides of annular sealed chamber are provided with filler chamber.
Above-mentioned shutdown notes, the plastic type multipurpose axle envelope exempted from, its filler chamber communicates with injecting hole by material-distributing hole.Seal gease, sealing compound, sealing fluid or sealed solid material etc. inject in the filler chamber by the material-distributing hole that links to each other with injecting hole.
Above-mentioned shutdown notes, the plastic type multipurpose axle envelope exempted from is provided with plastic sealing material in its filler chamber.
Above-mentionedly exempt from shut down to annotate, plastic type multipurpose axle envelope, when preventing that axle from rotating, plastic sealing material rotates with axle or comes off, and its filler chamber is designed to swallowtail-shaped structure.
Above-mentioned shutdown notes, the plastic type multipurpose axle envelope exempted from, the outside of its plastic sealing material is disposed with resistance material pad and material retaining board from inside to outside.
Above-mentioned shutdown notes, the plastic type multipurpose axle envelope exempted from leaves relief hole or spill port between its adjacent two-stage seal.
Above-mentioned shutdown notes, the plastic type multipurpose axle envelope exempted from also leaves leakage opening or hole for back flow between its adjacent two-stage seal.
Above-mentioned shutdown notes, the plastic type multipurpose axle envelope exempted from also leaves inlet opening and liquid level judas between its adjacent two-stage seal.
Above-mentionedly exempt from shut down to annotate, plastic type multipurpose axle envelope, the injecting hole in its seal also communicates with annular seal groove on the seal periphery.Behind the injecting sealing material, can realize the sealing between seal and the stuffing box gland in the annular seal groove.
Above-mentioned shutdown notes, the plastic type multipurpose axle envelope exempted from, its seal is a cone structure, the stuffing box gland that is mated also is cone structure, thereby has realized self-sealing function.
In the equipment operation, shaft sealing leakage according to the difference of sealing position, pressure, medium, can select to inject corresponding seal gease from injecting hole, and sealing compound, sealing fluid or sealed solid material stop to leak in the axle envelope and leak.
Seal available injection moulding as required, mould or injection moulding, mould and be used in combination, injection moulding is earlier with the seal load facility, but the more logical injecting hole of sealing material is injected closed chamber, and moulding is to insert closed chamber with plastic sealing material to mould load facility after the moulding.
Of the present inventionly exempt from shut down to annotate, the plastic type multipurpose axle seals compared with prior art, the beneficial effect that is produced is:
1) reasonable in design, simple in structure, the low cost of manufacture of this axle envelope, disassembling, assembling and replacing are convenient.
2) be widely used in the rotating machinery of various positive and negative pressures, as the shaft end seal of equipment such as steam turbine, generator, water pump, blower fan, gearbox.
3) can with conventional seals, be used in combination as labyrinth seal, packing_seal, mechanical seal, magnetic seal etc.
4) can realize comprehensive sealing between seal and axle, seal and stuffing box gland, stuffing box gland and the equipment.
5) be applicable to that the equipment and the axle of axle decentraction seal.
6) seal and stuffing box gland can be done taperedly, realize selfsealings.
(4) description of drawings
Accompanying drawing 1 is the injection moulding single-stage sealed structural representation of first embodiment of the invention.
Accompanying drawing 2 is the injection moulding secondary oil seal structure schematic representation of second embodiment of the invention.
Accompanying drawing 3 is the injection moulding pressure-bearing sealing structure schematic representation of third embodiment of the invention.
Accompanying drawing 4 for the injection moulding of four embodiment of the invention, mould the combined sealing structure schematic representation.
Accompanying drawing 5 is the comprehensive sealed structural representation of injection moulding of fifth embodiment of the invention.
Accompanying drawing 6 is the injection moulding liquid sealing structure schematic representation of sixth embodiment of the invention.
(5) embodiment
Below in conjunction with accompanying drawing 1-6 to of the present inventionly exempt from shut down to annotate, plastic type multipurpose axle envelope explains below doing.
Embodiment 1:
As shown in Figure 1; the shutdown notes of exempting from of the present invention; plastic type multipurpose axle envelope; its structure comprises single-stage seal 1; have injecting hole 2 in the single-stage seal 1; the annular sealed chamber that the end connection single-stage seal 1 and the rotating shaft of injecting hole 2 surrounds; the both sides of annular sealed chamber are provided with filler chamber 3; connect by material-distributing hole 4 between injecting hole 2 and the filler chamber 3; the outside of the filler chamber 3 on seal 1 right side is disposed with resistance material pad 5 and material retaining board 6 from inside to outside; the arranged outside of the filler chamber 3 in seal 1 left side has gland 7, the relief hole 8 that runs through about also having on the single-stage seal 1.
Sealing structure and sealing configurations such as conventional seals such as labyrinth sealing are used, even the time spent is joined the right side and the conventional seals structure of sealing structure, when conventional seals takes place to reveal, can install the sealing structure outside additional, to stop shaft sealing leakage, reveal part and can recycle by relief hole 8.
Embodiment 2:
As shown in Figure 2; the shutdown notes of exempting from of the present invention; plastic type multipurpose axle envelope; its structure comprises primary seal body 1 and secondary seal body 2; have injecting hole 3 in primary seal body 1 and the secondary seal body 2; the end of injecting hole 3 is communicated with primary seal body 1; the annular sealed chamber that secondary seal body 2 and rotating shaft surround; the both sides of annular sealed chamber are provided with filler chamber; be provided with plastic sealing material 4 in the filler chamber; the outside of plastic sealing material 4 is disposed with resistance material pad 5 and material retaining board 6 from inside to outside; leave spill port 7 between the above-mentioned two-stage seal, the arranged outside of secondary seal body 2 has gland 8.High pressure oil direct-axis 9 flows back to fuel tank by spill port 7 after 1 internal leakage of primary seal body, at this moment, high pressure oil pressure reduces greatly, and secondary seal body 2 just can stop oil to be leaked to outside the equipment at an easy rate.Plastic sealing material 4 adopts the seal gease that is insoluble to oil to make.Plastic sealing material 4 is inserted in the filler chamber of primary seal body 1 and secondary seal body 2 both sides, when partly solidifying plastic state, with primary seal body 1 and secondary seal body 2 load facilities, plastic sealing material 4 distortion are fitted like a glove with axle 9 solidifies, when preventing that axle 9 from rotating, plastic sealing material 4 rotates with axle 9 or comes off, and filler chamber is designed to swallow-tail form, noncondensing seal gease injects annular sealed chamber from injecting hole 3, forms secondary seal.
Embodiment 3:
As shown in Figure 3; the shutdown notes of exempting from of the present invention; plastic type multipurpose axle envelope; its structure comprises the primary seal body 1 of tapered structure; secondary seal body 2 and three grades of seals 3; primary seal body 1; have injecting hole 4 in secondary seal body 2 and three grades of seals 3; the end of injecting hole 4 is communicated with primary seal body 1; secondary seal body 2; the annular sealed chamber that three grades of seals 3 and rotating shaft surround; the both sides of annular sealed chamber are provided with filler chamber; be provided with plastic sealing material 5 in the filler chamber; connect by material-distributing hole 6 between injecting hole 4 and the filler chamber; the outside of plastic sealing material 5 is disposed with resistance material pad 7 and material retaining board 8 from inside to outside; the arranged outside of the filler chamber in three grades of seal 3 left sides has gland 9; at primary seal body 1; the outside of secondary seal body 2 and three grades of seals 3 also offers external sealed hole 10; and the annular seal groove on its outer surface 11 communicates; also be filled with plastic sealing material 5 in it; be used for and stuffing box gland 12 between clearance seal
Sealing mechanism is not owing to be provided with relief hole, and institute thinks pressure bearing and seal.Sealing for axle and equipment decentraction, on axle, be coated with earlier one deck releasing agent, assembling seal load facility, sealing material is injected filler chamber by injecting hole, material-distributing hole, after sealing material solidifies, split out seal, and behind the sealing material in removing filler chamber and the annular seal groove, seal is reconfigured load facility, and annular seal groove injects noncondensing seal gease sealing.
Embodiment 4:
As shown in Figure 4; the shutdown notes of exempting from of the present invention; plastic type multipurpose axle envelope; its structure comprises the primary seal body 1 of tapered structure; secondary seal body 2 and three grades of seals 3; primary seal body 1; have injecting hole 4 in secondary seal body 2 and three grades of seals 3; the end of injecting hole 4 is communicated with primary seal body 1; secondary seal body 2; the annular sealed chamber that three grades of seals 3 and rotating shaft surround; the both sides of annular sealed chamber are provided with filler chamber; be provided with plastic sealing material 5 in the filler chamber; leave relief hole 6 between above-mentioned primary seal body 1 and the secondary seal body 2 and between secondary seal body 2 and three grades of seals 3; at primary seal body 1; the outside of secondary seal body 2 and three grades of seals 3 also offers external sealed hole 7; also be filled with plastic sealing material 5 in it; be used for and stuffing box gland 8 between clearance seal, the internal surface of stuffing box gland 8 also be cone structure and with primary seal body 1; secondary seal body 2 and three grades of seals 3 form selfsealings mechanism.
Embodiment 5:
As shown in Figure 5; the shutdown notes of exempting from of the present invention; plastic type multipurpose axle envelope; its structure comprises the primary seal body 1 of tapered structure; secondary seal body 2 and three grades of seals 3; primary seal body 1; have injecting hole 4 in secondary seal body 2 and three grades of seals 3; the end of injecting hole 4 is communicated with primary seal body 1; secondary seal body 2; the annular sealed chamber that three grades of seals 3 and rotating shaft surround; the both sides of annular sealed chamber are provided with filler chamber; be provided with plastic sealing material 5 in the filler chamber; connect by material-distributing hole 6 between injecting hole 4 and the filler chamber; the outside of plastic sealing material 5 is disposed with resistance material pad 7 and material retaining board 8 from inside to outside; the arranged outside of seal 3 left side filler chamber has gland 9; leave relief hole 10 between above-mentioned primary seal body 1 and the secondary seal body 2 and between secondary seal body 2 and three grades of seals 3; at primary seal body 1; the outside of secondary seal body 2 and three grades of seals 3 also offers injecting hole 11; also be filled with plastic sealing material 5 in it; be used for and stuffing box gland 12 between clearance seal, the internal surface of stuffing box gland 12 also be cone structure and with primary seal body 1; secondary seal body 2 and three grades of seals 3 form selfsealings mechanism.Have injecting hole 13 on the stuffing box gland 12, and the annular seal groove on its outer surface 14 communicates, also is filled with plastic sealing material 5 in injecting hole 13 and the annular seal groove 14, be used for and equipment 15 between sealing.The sealing structure can realize the comprehensive nothing leakage sealing between above-mentioned seal and axle, seal and stuffing box gland and stuffing box gland and the equipment.
Embodiment 6:
As shown in Figure 6; the shutdown notes of exempting from of the present invention; plastic type multipurpose axle envelope; its structure comprises primary seal body 1; secondary seal body 2; three grades of seals 3; level Four seal 4 and Pyatyi seal 5; have injecting hole 6 in the above-mentioned seal at different levels; wherein; the injecting hole of Pyatyi seal 5 is not filled any material; only do back the usefulness of liquid for hole for back flow 11; the end of injecting hole 6 is communicated with the annular sealed chamber that seals at different levels and rotating shaft surround; the both sides of annular sealed chamber are provided with filler chamber; be provided with plastic sealing material 7 in the filler chamber; the outside of plastic sealing material 7 is disposed with resistance material pad 8 and material retaining board 9 from inside to outside; the arranged outside of Pyatyi seal 5 right side filler chamber has gland 10; leave leakage opening 12 between above-mentioned primary seal body 1 and the secondary seal body 2; leave inlet opening 13 and liquid level judas 14 between three grades of seals 3 and the level Four seal 4; the outside of above-mentioned seal has injecting hole 15; and the annular seal groove on its outer surface 16 communicates; be filled with noncondensing in it; water insoluble; oil sealing compound, be used for and stuffing box gland 17 between sealing.
The sealing structure is mainly used in negative-pressure sealing, prevents that air, dust etc. from entering negative pressure equipment.According to the difference of sealing medium, available water, wet goods liquid are made sealing fluid.Plastic sealing material 7 solidifies the back and produces the gap and interior leakage with the rotatingshaft wearing and tearing, for reducing the consumption of liquid seal liquid, every grade of seal is provided with annular seal groove 16, by injecting hole noncondensing, water insoluble, oily sealing compound is injected annular seal groove 16, seal up the sealed solid gap, reduce the sealing fluid consumption.
Of the present inventionly exempt from shut down to annotate, that the plastic type multipurpose axle seals its processing and fabricating is simple and convenient, processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characteristics of specification, be the known technology of those skilled in the art.
Claims (10)
1. exempt to shut down notes, plastic type multipurpose axle envelope; comprise the seal that one-level or one-level are above, it is characterized in that, all have injecting hole in every grade of seal; the terminal communication seals body of injecting hole and the annular sealed chamber that rotating shaft surrounds, the both sides of annular sealed chamber are provided with filler chamber.
2. shutdown notes, the plastic type multipurpose axle envelope exempted from according to claim 1 is characterized in that filler chamber communicates with injecting hole by material-distributing hole.
3. shutdown notes, the plastic type multipurpose axle envelope exempted from according to claim 1 is characterized in that, is provided with plastic sealing material in the filler chamber.
4. shutdown notes, the plastic type multipurpose axle envelope exempted from according to claim 1 is characterized in that filler chamber is swallowtail-shaped structure.
5. shutdown notes, the plastic type multipurpose axle envelope exempted from according to claim 4 is characterized in that the outside of plastic sealing material is disposed with resistance material pad and material retaining board from inside to outside.
6. shutdown notes, the plastic type multipurpose axle envelope exempted from according to claim 1 is characterized in that, leaves relief hole or spill port between the adjacent two-stage seal.
7. shutdown notes, the plastic type multipurpose axle envelope exempted from according to claim 1 is characterized in that, also leaves leakage opening or hole for back flow between the adjacent two-stage seal.
8. shutdown notes, the plastic type multipurpose axle envelope exempted from according to claim 1 is characterized in that, also leaves inlet opening and liquid level judas between the adjacent two-stage seal.
9. according to claim 1ly exempt from shut down to annotate, plastic type multipurpose axle envelope, it is characterized in that the injecting hole in the seal also communicates with annular seal groove on the seal periphery.
10. shutdown notes, the plastic type multipurpose axle envelope exempted from according to claim 1 is characterized in that seal is a cone structure, and the stuffing box gland that is mated also is cone structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100140603A CN101220864A (en) | 2008-01-23 | 2008-01-23 | Break-free machine injection and plastic type multipurpose shaft gland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100140603A CN101220864A (en) | 2008-01-23 | 2008-01-23 | Break-free machine injection and plastic type multipurpose shaft gland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101220864A true CN101220864A (en) | 2008-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100140603A Pending CN101220864A (en) | 2008-01-23 | 2008-01-23 | Break-free machine injection and plastic type multipurpose shaft gland |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101220864A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571352B (en) * | 2009-06-02 | 2010-12-29 | 济南宏升益德科技发展有限公司 | Seal device used for pin hole of bar grate block |
| CN103925362A (en) * | 2014-04-16 | 2014-07-16 | 上海威尔泰仪器仪表有限公司 | Static sealing structure for electronic device |
-
2008
- 2008-01-23 CN CNA2008100140603A patent/CN101220864A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571352B (en) * | 2009-06-02 | 2010-12-29 | 济南宏升益德科技发展有限公司 | Seal device used for pin hole of bar grate block |
| CN103925362A (en) * | 2014-04-16 | 2014-07-16 | 上海威尔泰仪器仪表有限公司 | Static sealing structure for electronic device |
| CN103925362B (en) * | 2014-04-16 | 2017-01-18 | 上海威尔泰仪器仪表有限公司 | Static sealing structure for electronic device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080716 |