CN103470768A - Carbon ring seal - Google Patents
Carbon ring seal Download PDFInfo
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- CN103470768A CN103470768A CN2013103883011A CN201310388301A CN103470768A CN 103470768 A CN103470768 A CN 103470768A CN 2013103883011 A CN2013103883011 A CN 2013103883011A CN 201310388301 A CN201310388301 A CN 201310388301A CN 103470768 A CN103470768 A CN 103470768A
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- ring
- carbocyclic ring
- carbon
- sealing
- reinforcing
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Abstract
The invention discloses a carbon ring seal which comprises a sealing box, carbon rings, flat gaskets, carbon ring reinforcing rings and wave springs. The carbon rings, the flat gaskets, the carbon ring reinforcing rings and the wave springs are arranged in the sealing box, the flat gaskets are arranged on side surfaces of the carbon rings, each wave spring presses space between the sealing box and the corresponding flat gasket, each carbon ring reinforcing ring is sleeved on the outside of the corresponding carbon ring, the axis of each carbon ring reinforcing ring is coincided with that of the corresponding carbon ring, the axial width of each carbon ring is smaller than that of each carbon ring reinforcing ring, each carbon ring reinforcing ring is axially matched with the corresponding flat gasket in a contact manner, and gaps are formed among the carbon rings and the flat gaskets. The carbon ring seal has the advantages that when the carbon rings float, the carbon rings are not in contact with the flat gaskets, but the carbon ring reinforcing rings are matched with the flat gaskets in the contact manner, so that a sealing effect and the axial bearing capacity are guaranteed; problems that contamination particles in air enter space between each carbon ring and a corresponding flat gasket, each carbon ring rubs with the corresponding flat gasket, the carbon rings cannot float and accordingly are directly massively abraded can be solved.
Description
Technical field
the present invention relates to a kind of seal arrangement, relate in particular to a kind of carbon ring seal.
Background technique
carbon ring seal device belongs to a kind of of float-ring sealing device, utilizes the lubricity of carbocyclic ring self, by the sealing that is close to contact, reduces to reveal.Simultaneously, carbon ring seal needs to use isolation gas often, as nitrogen, be mainly used in poisonous, the inflammable medium of isolating seal, because of its good sealing effect, simple in structurely be easy to processing and assembling maintenance, be widely used the fields such as oil, chemical industry, metallurgy, as the use of the seal arrangement of steam turbine, compressor, generator, turbomachinery.
the sealing gland that available ring carbon sealing comprises sealing seat, be fixed with sealing seat, be arranged at carbocyclic ring, plain cushion, carbocyclic ring reinforcing ring, ventilation ring in sealing seat and sealing gland, it seals by carbocyclic ring and rotor formation.In the design of traditional carbon ring seal, carbocyclic ring often directly contacts with plain cushion in side, guarantees location and thrust load.Yet, because carbon ring seal is multiplex in the sealing of chemical industry, oil mesohigh gas, the solid particle polluter contained in gas can enter in Seal cage with pressurized gas, between carbocyclic ring and plain cushion, retains, form and hinder and the phase mutual friction, have a strong impact on the floating effect of carbocyclic ring.If things go on like this, the floating effect severe exacerbation of carbocyclic ring, cause it directly to contact with rotating shaft, significantly reduces the seal arrangement life-span.
therefore, guarantee that in carbon ring seal the free floating of carbocyclic ring is significant, guaranteed carbocyclic ring effective floating in impure gas only, the life-span that could improve carbon ring seal.
Summary of the invention
the present invention seeks to: a kind of carbon ring seal is provided, it is retention gap between carbocyclic ring and plain cushion, and guarantee to contact sealing effect by carbocyclic ring reinforcing ring and the cooperation of plain cushion, avoid because impurity particle in gas enters between carbocyclic ring and plain cushion, cause the two phase mutual friction, can't make carbocyclic ring float, directly cause the situation of the extensive wearing and tearing of carbocyclic ring.
technological scheme of the present invention is: a kind of carbon ring seal, comprise sealing case, be arranged at the carbocyclic ring in sealing case, plain cushion, carbocyclic ring reinforcing ring and wavy spring, described plain cushion is located at the side of carbocyclic ring, described wavy spring is pressed between sealing case and plain cushion, described carbocyclic ring reinforcing ring is sheathed on outside carbocyclic ring and both deads in line, the axial width of described carbocyclic ring is less than the axial width of carbocyclic ring reinforcing ring, the cooperation that contacts with plain cushion at axial direction of described carbocyclic ring reinforcing ring, be formed with gap between described carbocyclic ring and plain cushion, when carbocyclic ring floats, carbocyclic ring does not contact with plain cushion, and the carbocyclic ring reinforcing ring is in contact with one another with plain cushion and coordinates, guarantee sealing effect and axially mounting load.Avoid like this, because impurity particle in gas enters between carbocyclic ring and plain cushion, causing the two phase mutual friction, can't make carbocyclic ring float, directly cause the situation of the extensive wearing and tearing of carbocyclic ring.
the concrete structure of described carbocyclic ring reinforcing ring and carbocyclic ring and assembling mode between the two: described carbocyclic ring periphery wall has two external conical shape faces, and two external conical shape faces are connected to form V-type, the inwall of described carbocyclic ring reinforcing ring has two inner conical faces that coordinate with two external conical shape faces respectively, and carbocyclic ring reinforcing ring and carbocyclic ring are fixed by inner conical face and external conical shape face.Due to carbocyclic ring and carbocyclic ring reinforcing ring employing taper fit, so not only make the carbocyclic ring assembling simple, easy to maintenance, guaranteed the reinforcement ability of carbocyclic ring reinforcing ring to carbocyclic ring simultaneously.On the other hand, due to the conical design of carbocyclic ring reinforcing ring, it contacts cusp with the plain cushion cooperation position, can prevent that the magazine particle from entering in the micro-gap between carbocyclic ring reinforcing ring and plain cushion, prevents from being damaged by impurity particle.
above-mentioned carbocyclic ring reinforcing ring is made by titanium alloy material, can make like this carbocyclic ring reinforcing ring and carbocyclic ring float flexibly in the course of the work, avoids occurring the carbocyclic ring wearing and tearing that cause because floating.
described carbocyclic ring reinforcing ring is provided with between radial direction and sealing case inwall adjusts the gap ring, so that adjusting play in assembly process.
further, described carbocyclic ring two and coaxial spaced are arranged is arranged in sealing case, described carbocyclic ring reinforcing ring is corresponding two, be provided with ventilation ring between both sides carbocyclic ring reinforcing ring and carbocyclic ring, the radial hole of this ventilation ring is connected with the vent sealing on sealing case, in described ventilation ring, by vent and radial hole, injects sealing gas.
the concrete structure of described sealing case is: described sealing case comprises sealing seat, the sealing gland coordinated with sealing seat, and described sealing gland and sealing seat are spirally connected fixing by screw.This assembling mode is the assembling for the ease of sealing case 1 interior remaining part.
advantage of the present invention is:
1. the present invention's retention gap between carbocyclic ring and plain cushion, and guarantee to contact sealing effect by carbocyclic ring reinforcing ring and the cooperation of plain cushion, avoid because impurity particle in gas enters between carbocyclic ring and plain cushion, cause the two phase mutual friction, can't make carbocyclic ring float, directly cause the situation of the extensive wearing and tearing of carbocyclic ring.
2. in the present invention, carbocyclic ring and carbocyclic ring reinforcing ring adopt taper fit, so not only make the carbocyclic ring assembling simple, easy to maintenance, have guaranteed the reinforcement ability of carbocyclic ring reinforcing ring to carbocyclic ring simultaneously.
3. the reinforcing ring of carbocyclic ring described in the present invention is made by titanium alloy material, can make like this carbocyclic ring reinforcing ring and carbocyclic ring float flexibly in the course of the work, avoids occurring the carbocyclic ring wearing and tearing that cause because floating.
4. in the present invention, due to the conical design of carbocyclic ring reinforcing ring, it contacts cusp with the plain cushion cooperation position, can prevent that the magazine particle from entering in the micro-gap between carbocyclic ring reinforcing ring and plain cushion, prevents from being damaged by impurity particle.
The accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is the schematic diagram that partly cuts open of the present invention.
wherein: 1 sealing case; 11 vents; 12 sealing seats; 13 sealing glands; 14 screws;
2 carbocyclic rings; 21 external conical shape faces;
3 plain cushions;
4 carbocyclic ring reinforcing rings; 41 inner conical faces;
5 wavy springs;
6 gaps;
7 adjust the gap ring;
8 ventilation rings.
Embodiment
embodiment: as shown in Figure 1, a kind of carbon ring seal, comprise sealing case 1, be arranged at carbocyclic ring 2, plain cushion 3, carbocyclic ring reinforcing ring 4 and wavy spring 5 in sealing case 1, carbocyclic ring 2 two and coaxial spaced are arranged is arranged in sealing case 1, described carbocyclic ring reinforcing ring 4 is corresponding two, be provided with ventilation ring 8 between both sides carbocyclic ring reinforcing ring 4 and carbocyclic ring 2, the radial hole 81 of this ventilation ring 8 is connected with vent 11 sealings on sealing case 1, in described ventilation ring 8, by vent 11 and radial hole 81, injects sealing gas as nitrogen.Described plain cushion 3 is located at the side side of carbocyclic ring 2 away from ventilation ring 8, described wavy spring 5 is pressed between sealing case 1 and plain cushion 3, described carbocyclic ring reinforcing ring 4 is sheathed on outside carbocyclic ring 2 and both deads in line, the axial width of described carbocyclic ring 2 is less than the axial width of carbocyclic ring reinforcing ring 4, the cooperation that contacts with plain cushion 3 at axial direction of described carbocyclic ring reinforcing ring 4, be formed with gap 6 between described carbocyclic ring 2 and plain cushion 3, when carbocyclic ring 2 floats, carbocyclic ring 2 does not contact with plain cushion 3, and carbocyclic ring reinforcing ring 4 is in contact with one another with plain cushion 3 and coordinates, guarantee sealing effect and axially mounting load.Avoid like this, because impurity particle in gas enters between carbocyclic ring 2 and plain cushion 3, causing the two phase mutual friction, can't make carbocyclic ring 2 float, directly cause the situation of carbocyclic ring 2 extensive wearing and tearing.
described carbocyclic ring reinforcing ring 4 and the concrete structure of carbocyclic ring 2 and assembling mode between the two: described carbocyclic ring 2 periphery walls have two external conical shape faces 21, and two external conical shape faces 21 are connected to form V-type, the inwall of described carbocyclic ring reinforcing ring 4 has two inner conical faces 41 that coordinate with two external conical shape faces 21 respectively, and carbocyclic ring reinforcing ring 4 is fixed by inner conical face 41 and external conical shape face 21 with carbocyclic ring 2.Because carbocyclic ring 2 and carbocyclic ring reinforcing ring 4 adopt taper fit, so not only make the carbocyclic ring assembling simple, easy to maintenance, guaranteed the reinforcement ability of 4 pairs of carbocyclic rings 2 of carbocyclic ring reinforcing ring simultaneously.On the other hand, due to the conical design of carbocyclic ring reinforcing ring 4, it contacts cusp with plain cushion 3 cooperation positions, can prevent that the magazine particle from entering in the micro-gap between carbocyclic ring reinforcing ring and plain cushion, prevents from being damaged by impurity particle.
above-mentioned carbocyclic ring reinforcing ring 4 is made by titanium alloy material, can make like this carbocyclic ring reinforcing ring 4 and carbocyclic ring 2 float flexibly in the course of the work, avoids occurring the carbocyclic ring wearing and tearing that cause because floating.
described carbocyclic ring reinforcing ring 4 is provided with between radial direction and sealing case 1 inwall adjusts gap ring 7, so that adjusting play in assembly process.
the concrete structure of described sealing case 1 is: described sealing case 1 comprises sealing seat 12, the sealing gland 13 coordinated with sealing seat 12, and described sealing gland 13 and sealing seat 12 are spirally connected fixing by screw 14.This assembling mode is the assembling for the ease of sealing case 1 interior remaining part.
working principle of the present invention is: as shown in Figure 1, the carbon ring seal left side is required sealing gas, and right side is external environment, and carbocyclic ring is inboard is the rotating shaft (not shown), when rotating shaft is static, carbocyclic ring 2 contacts with rotating shaft, and along with the continuous rising of rotating shaft rotating speed, left side gas enters carbocyclic ring 2 and rotating shaft gap, carbocyclic ring 2 floats, leave the rotating shaft surface, utilize gas film lubrication, reduce friction relatively.Left side gas, by left side carbocyclic ring 2, enters in ventilation ring 8 if any revealing, and introduce in ventilation ring 8, has blanket gas (as nitrogen) to form sealing, therefore can avoid left side gas to spill.Right side carbocyclic ring 2 is done the use of insurance.
the present invention compares with conventional art, efficiently solving impure granular gas adopts in carbon ring seal, because abrasion of particles carbocyclic ring 2 causes the problem that the life-span descends, and the taper fit that carbocyclic ring 2 and carbocyclic ring reinforcing ring are 4 is conducive to parts machining, assembling, maintenance, and the consolidation effect of carbocyclic ring reinforcing ring, be to achieve many things at one stroke.
be only below concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other mode of execution.All employings are equal to the technological scheme of replacement or equivalent transformation formation, within all dropping on the present invention's scope required for protection.
Claims (6)
1. a carbon ring seal, comprise sealing case (1), be arranged at the carbocyclic ring (2) in sealing case (1), plain cushion (3), carbocyclic ring reinforcing ring (4) and wavy spring (5), described plain cushion (3) is located at the side of carbocyclic ring (2), described wavy spring (5) is pressed between sealing case (1) and plain cushion (3), it is characterized in that: described carbocyclic ring reinforcing ring (4) is sheathed on outside carbocyclic ring (2) and both deads in line, the axial width of described carbocyclic ring (2) is less than the axial width of carbocyclic ring reinforcing ring (4), described carbocyclic ring reinforcing ring (4) cooperation that contacts with plain cushion (3) at axial direction, be formed with gap (6) between described carbocyclic ring (2) and plain cushion (3), when carbocyclic ring (2) floats, carbocyclic ring (2) does not contact with plain cushion (3), and carbocyclic ring reinforcing ring (4) is in contact with one another with plain cushion (3) and coordinates, guarantee sealing effect and axially mounting load.
2. a kind of carbon ring seal according to claim 1, it is characterized in that: described carbocyclic ring (2) periphery wall has two external conical shape faces (21), and two external conical shape faces (21) are connected to form V-type, the inwall of described carbocyclic ring reinforcing ring (4) has two inner conical faces (41) that coordinate with two external conical shape faces (21) respectively, and carbocyclic ring reinforcing ring (4) is fixed by inner conical face (41) and external conical shape face (21) with carbocyclic ring (2).
3. a kind of carbon ring seal according to claim 2, it is characterized in that: described carbocyclic ring reinforcing ring (4) is made by titanium alloy material.
4. according to claim 1 or 2 or 3 described a kind of carbon ring seals, it is characterized in that: described carbocyclic ring reinforcing ring (4) is provided with between radial direction and sealing case (1) inwall adjusts gap ring (7).
5. according to claim 1 or 2 or 3 described a kind of carbon ring seals, it is characterized in that: described carbocyclic ring (2) two and coaxial spaced are arranged is arranged in sealing case (1), described carbocyclic ring reinforcing ring (4) is corresponding two, be provided with ventilation ring (8) between both sides carbocyclic ring reinforcing rings (4) and carbocyclic ring (2), the radial hole (81) of this ventilation ring (8) is connected with vent (11) sealing on sealing case (1), in described ventilation ring (8), by vent (11) and radial hole (81), injects sealing gas.
6. according to claim 1 or 2 or 3 described a kind of carbon ring seals, it is characterized in that: described sealing case (1) comprises sealing seat (12), the sealing gland (13) coordinated with sealing seat (12), and described sealing gland (13) and sealing seat (12) are spirally connected fixing by screw (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310388301.1A CN103470768B (en) | 2013-08-30 | 2013-08-30 | A kind of carbon ring seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310388301.1A CN103470768B (en) | 2013-08-30 | 2013-08-30 | A kind of carbon ring seal |
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| Publication Number | Publication Date |
|---|---|
| CN103470768A true CN103470768A (en) | 2013-12-25 |
| CN103470768B CN103470768B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310388301.1A Active CN103470768B (en) | 2013-08-30 | 2013-08-30 | A kind of carbon ring seal |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR617950A (en) * | 1926-06-21 | 1927-02-28 | Packing for piston rods, turbine shafts and the like | |
| GB1413029A (en) * | 1973-09-20 | 1975-11-05 | Groll Leonetti Cie Sa | Sealing means for a rotating shaft |
| US4381868A (en) * | 1981-07-24 | 1983-05-03 | Cameron Iron Works, Inc. | Pressure-actuated wellhead sealing assembly |
| CN201651315U (en) * | 2010-04-09 | 2010-11-24 | 郑州华能电力设备有限公司 | Composite mechanical seal device |
| CN102278475A (en) * | 2011-06-15 | 2011-12-14 | 浙江大学 | Dynamic sealing structure for reciprocating movement shaft between high temperature gas and high temperature liquid |
| CN203488717U (en) * | 2013-08-30 | 2014-03-19 | 西安交通大学苏州研究院 | Carbon ring seal |
-
2013
- 2013-08-30 CN CN201310388301.1A patent/CN103470768B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR617950A (en) * | 1926-06-21 | 1927-02-28 | Packing for piston rods, turbine shafts and the like | |
| GB1413029A (en) * | 1973-09-20 | 1975-11-05 | Groll Leonetti Cie Sa | Sealing means for a rotating shaft |
| US4381868A (en) * | 1981-07-24 | 1983-05-03 | Cameron Iron Works, Inc. | Pressure-actuated wellhead sealing assembly |
| CN201651315U (en) * | 2010-04-09 | 2010-11-24 | 郑州华能电力设备有限公司 | Composite mechanical seal device |
| CN102278475A (en) * | 2011-06-15 | 2011-12-14 | 浙江大学 | Dynamic sealing structure for reciprocating movement shaft between high temperature gas and high temperature liquid |
| CN203488717U (en) * | 2013-08-30 | 2014-03-19 | 西安交通大学苏州研究院 | Carbon ring seal |
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| Publication number | Publication date |
|---|---|
| CN103470768B (en) | 2015-12-02 |
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