CN103953576A - Seal structure and centrifugal pump using seal structure - Google Patents
Seal structure and centrifugal pump using seal structure Download PDFInfo
- Publication number
- CN103953576A CN103953576A CN201410134487.2A CN201410134487A CN103953576A CN 103953576 A CN103953576 A CN 103953576A CN 201410134487 A CN201410134487 A CN 201410134487A CN 103953576 A CN103953576 A CN 103953576A
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- China
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- centrifugal pump
- metallic matrix
- sealing configuration
- seal ring
- radial groove
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Abstract
The invention provides a seal structure, which is used for a multiple-stage centrifugal pump or a single-stage centrifugal pump and is matched with a rotating piece. The seal structure comprises an annular metal base body and an annular nonmetal lining, wherein at least one radial groove surrounding the inner wall of the metal base body and at least one axial groove along the axial direction of the metal base body are formed in the inner wall of the metal base body; the outer wall of the nonmetal lining is fitted with the inner wall of the metal base body, and is embedded into the radial groove and the axial groove. The seal structure has the advantages that a clearance between the seal structure and the rotating piece can be decreased, the leakage can be effectively reduced, and the efficiency of the pump can be improved; with the solving of a problem about hardness difference between the abrasive faces of metal materials, the occlusion problem is prevented, the abrasion is effectively reduced and the service life of the pump is prolonged; the seal structure can play a role in supporting a rotor component; by adopting the radial groove and the axial groove, the degree of embedding between the metal base body and the nonmetal lining is improved; the metal base body can also be reutilized for multiple times, so that the resource can be effectively saved.
Description
Technical field
The present invention relates to centrifugal pump technical field, relate in particular to the sealing configuration of compound material and the centrifugal pump of use sealing structure that a kind of pump is used.
Background technique
Pump sealing configuration; the throat's nockbush that comprises seal ring, guide blade sleeve, balance set and Seal cage; these sealing configurations are generally static element; the pump housing, pump cover, inlet segment, stage casing, water exit end and stator etc. are shielded; prevent these larger parts depreciations; be used in conjunction with impeller, axle sleeve rotary member, by the micro-gap between sealing configuration and revolving part, play the effect of sealing, support, balancing axial thrust or throttling.Traditional sealing configuration, comprises and throat's nockbush of seal ring, guide blade sleeve, balance set and Seal cage all adopts metallic material or damascene nonmetallic material to make.The sealing configuration that metallic material is made, the material of itself and impeller, axle sleeve is identical or approaching.For the stronger medium of some corrosivity, its seizure resistance of the metallic material of generally selecting is poor, and the too small seal ring external member in gap and impeller or axle sleeve are easily killed, and causes pump to damage, excesssive gap, and leakage rate increases, and reduces the efficiency of pump, does not have the effect of seal ring.Damascene nonmetallic material are made sealing configuration, and it is inlayed part and easily comes off, and what have inlays firmly, but metallic matrix can only use once, can not repeatedly recycle.
Summary of the invention
Technical problem to be solved by this invention is, the centrifugal pump of a kind of sealing configuration and use sealing structure is provided, it can reduce the gap between sealing configuration and revolving part, reduce the efficiency of leakage rate, raising centrifugal pump, reduce the wearing and tearing of centrifugal pump, extend the working life of centrifugal pump, and improved the chimeric degree of metallic matrix and non-metallic inner liner, metallic matrix can repeatedly reuse.
In order to address the above problem, the invention provides a kind of sealing configuration, the non-metallic inner liner that comprises annular metallic matrix and annular, on the inwall of described metallic matrix, be provided with at least one around the radial groove of described metallic matrix inwall and at least one along the axial axial notch of described metallic matrix, the outer wall of described non-metallic inner liner fit described metallic matrix inwall and embed in described radial groove and axial notch.
Further, the width of described radial groove is more than or equal to 3mm, and radial groove sidewall to contiguous metallic matrix end face distance is more than or equal to 2mm.
Further, described radial groove is a plurality of, and the distance between the sidewall of two adjacent radial grooves is more than or equal to 2mm.
Further, the width of described axial notch is more than or equal to 5mm, and the radial dimension of described axial notch is less than or equal to the radial dimension of radial groove.
Further, described axial notch is a plurality of, and a plurality of described axial notches distribute along the even circumferential of described metallic matrix.
Further, the internal diameter of described non-metallic inner liner is less than the internal diameter of described metallic matrix.
The present invention also provides a kind of centrifugal pump that uses above-mentioned sealing configuration, described centrifugal pump is multistage centrifugal pump, comprise seal ring, guide blade sleeve and balance set, described seal ring is fixed on the inlet segment or stage casing of described multistage centrifugal pump, described guide blade sleeve is fixed on the stator of described multistage centrifugal pump, described seal ring and described stator, the impeller of guide blade sleeve and described centrifugal pump coordinates, with the effect that realizes sealing and support, described balance set is fixed on the water exit end of described centrifugal pump, described balance set coordinates by the axle sleeve with described centrifugal pump or balance hub, with balancing axial thrust, described seal ring, guide blade sleeve and balance set all adopt above-mentioned sealing configuration.
The present invention also provides a kind of centrifugal pump that uses above-mentioned sealing configuration, described centrifugal pump is single stage centrifugal pump, comprise seal ring and throat's nockbush, described seal ring is fixed on the pump housing of described centrifugal pump, coordinates, to realize sealing throttling with the impeller of described centrifugal pump, the axle sleeve of described throat nockbush and described centrifugal pump is used in conjunction with, to realize part throttle, it is characterized in that, described seal ring and described throat nockbush all adopt above-mentioned sealing configuration.
The invention has the advantages that, can reduce the gap between sealing configuration and revolving part, effectively reduce leakage rate, improve the efficiency of pump; Solve the difference of hardness problem between Material Wear face, prevented " interlock " problem and effectively reduced wear, extended the working life of pump; Can play to rotor part the effect of support; Adopt radial groove and axial notch, improved the chimeric degree of metallic matrix and non-metallic inner liner, metallic matrix can also repeatedly utilize, and can effectively economize on resources.
Accompanying drawing explanation
Figure 1 shows that the structural representation of a kind of sealing configuration of the present invention;
Figure 2 shows that A-A sectional view in Fig. 1;
Figure 3 shows that the structural representation of a kind of multistage centrifugal pump of the present invention;
Figure 4 shows that the structural representation of a kind of single stage centrifugal pump of the present invention.
Reference character:
1, sealing configuration; 10, metallic matrix;
11, non-metallic inner liner; 12, radial groove;
13, axial notch;
3, multistage centrifugal pump; 30, seal ring;
31, guide blade sleeve; 32, balance set;
33, centrifugal pump inlet segment; 34, centrifugal pump stage casing;
35, stator; 36, impeller;
4, single stage centrifugal pump; 40, seal ring;
41, throat's nockbush; 42, the pump housing;
43, impeller; 44, axle sleeve.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the centrifugal pump of a kind of sealing configuration provided by the invention and use sealing structure is elaborated.
Figure 1 shows that the structural representation of a kind of sealing configuration of the present invention, Figure 2 shows that A-A sectional view in Fig. 1, referring to Fig. 1 and Fig. 2, a kind of sealing configuration 1 of the present invention comprises the non-metallic inner liner 11 of annular metallic matrix 10 and annular.Described non-metallic inner liner 11 can be fluoroplastic or the rubber of wear resistant corrosion resistant.
On the inwall of described metallic matrix 10, be provided with at least one around the radial groove 12 of described metallic matrix 10 inwalls.Described radial groove 12 refers to along the groove of metallic matrix 10 radial direction depressions, and described radial groove 12, around the inwall of described metallic matrix 10, can form an annular groove.In Fig. 1, adopt the position of the bottom that dots radial groove 12, in Fig. 2, can clear view arrive radial groove 12.In this embodiment, described radial groove 12 is one, the width of described radial groove 12 is more than or equal to 3mm, and the sidewall of radial groove 12 to the distance of the end face of contiguous metallic matrix 10 is more than or equal to 2mm, so that radial groove 12 can be fixed described non-metallic inner liner 11 better.In other mode of executions of the present invention, described radial groove 12 can be for a plurality of, described a plurality of radial groove 12 axially setting gradually along metallic matrix 10, the sidewall of the radial groove 12 of the end face of the most close metallic matrix 10 to the distance of the end face of contiguous metallic matrix 10 is more than or equal to 2mm, distance between the sidewall of two adjacent radial grooves 12 is more than or equal to 2mm, so that radial groove 12 can be fixed the intensity of described non-metallic inner liner 11 and assurance metallic matrix 10 better.
On the inwall of described metallic matrix 10, be also provided with at least one along the axial axial notch 13 of described metallic matrix 10.In this embodiment, described axial notch 13 runs through described metallic matrix 10 along the axial direction of metallic matrix 10, the width of described axial notch 13 is more than or equal to 5mm, the radial dimension of described axial notch 13 is less than or equal to the radial dimension of radial groove 12, so that fix better described non-metallic inner liner 11.Described axial notch 13 can for one also can be for a plurality of, in this embodiment, described axial notch 13 is six, six axial notches 13 distribute along the even circumferential of metallic matrix 10.
The inwall of the described metallic matrix 10 of described non-metallic inner liner 11 laminating also embeds in described radial groove 12 and axial notch 13.13 pairs of non-metallic inner liner 11 of described radial groove 12 and axial notch play fixing effect, improve non-metallic inner liner 11 and the chimeric degree of metallic matrix 10, effectively prevent that non-metallic inner liner 11 from departing from from metallic matrix 10, thereby form the sealing configuration 1 of a compound material.For the ease of described non-metallic inner liner 11, coordinate with described metallic matrix 10, the internal diameter of described non-metallic inner liner 11 is less than the internal diameter of described metallic matrix 10.
Described sealing configuration 1 is used in conjunction with each member of centrifugal pump, for example, and impeller ring, casing ring guide blade sleeve, balance set, throat's nockbush.Micro-gap by between sealing configuration 1 and each member of centrifugal pump, plays the effect of sealing, support, balance, throttling.When sealing configuration 1 is used, mainly loss is non-metallic inner liner 11, less to the loss ratio of metallic matrix 10, so metallic matrix 10 can repeatedly utilize, and effectively economizes on resources.
The present invention also provides a kind of centrifugal pump that uses above-mentioned sealing configuration 1, Figure 3 shows that the structural representation of a kind of multistage centrifugal pump of the present invention.Described multistage centrifugal pump 3 comprises two seal rings 30, guide blade sleeve 31 and balance set 32.Described seal ring 30 is separately fixed on the inlet segment 33 and stage casing 34 of described multistage centrifugal pump 3, and described seal ring 30 is used as impeller ring.Described guide blade sleeve 31 is fixed on the stator 35 of described multistage centrifugal pump 3.Described seal ring 30 coordinates with the impeller 36 of described stator 35, guide blade sleeve 31 and described centrifugal pump, with the effect of playing sealing and supporting.Described balance set 32 is fixed on the water exit end 37 of described multistage centrifugal pump 3, and described balance set 32 coordinates by the axle sleeve with described multistage centrifugal pump 3 (not indicating in accompanying drawing) or balance hub (not indicating in accompanying drawing), with balancing axial thrust.Described seal ring 30, guide blade sleeve 31 and balance set 32 all adopt sealing configuration 1 of the present invention.
The present invention also provides a kind of centrifugal pump that uses above-mentioned sealing configuration 1, Figure 4 shows that the structural representation of a kind of single stage centrifugal pump of the present invention.Described single stage centrifugal pump 4 comprises seal ring 40Ji throat nockbush 41, and described seal ring 40 is fixed on the pump housing 42 of described single stage centrifugal pump 4, and described seal ring 40 is used as casing ring.Described seal ring 40 coordinates with the impeller 43 of described single stage centrifugal pump 4, to play the effect of sealing throttling.Described throat nockbush 41 is used in conjunction with the axle sleeve 44 of described single stage centrifugal pump 4, and to play the effect of part throttle, described seal ring 40 and described throat nockbush 41 all adopt sealing configuration 1 of the present invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a sealing configuration, the non-metallic inner liner that comprises annular metallic matrix and annular, it is characterized in that, on the inwall of described metallic matrix, be provided with at least one around the radial groove of described metallic matrix inwall and at least one along the axial axial notch of described metallic matrix, the outer wall of described non-metallic inner liner fit described metallic matrix inwall and embed in described radial groove and axial notch.
2. sealing configuration according to claim 1, is characterized in that, the width of described radial groove is more than or equal to 3mm, and radial groove sidewall to the distance of the end face of contiguous metallic matrix is more than or equal to 2mm.
3. sealing configuration according to claim 1, is characterized in that, described radial groove is a plurality of, and the distance between the sidewall of two adjacent radial grooves is more than or equal to 2mm.
4. sealing configuration according to claim 1, is characterized in that, the width of described axial notch is more than or equal to 5mm, and the radial dimension of described axial notch is less than or equal to the radial dimension of radial groove.
5. sealing configuration according to claim 1, is characterized in that, described axial notch is a plurality of, and a plurality of described axial notches distribute along the even circumferential of described metallic matrix.
6. sealing configuration according to claim 1, is characterized in that, the internal diameter of described non-metallic inner liner is less than the internal diameter of described metallic matrix.
7. a centrifugal pump, described centrifugal pump is multistage centrifugal pump, comprise seal ring, guide blade sleeve and balance set, described seal ring is fixed on the inlet segment or stage casing of described multistage centrifugal pump, described guide blade sleeve is fixed on the stator of described multistage centrifugal pump, described seal ring and described stator, the impeller of guide blade sleeve and described centrifugal pump coordinates, with the effect that realizes sealing and support, described balance set is fixed on the water exit end of described centrifugal pump, described balance set coordinates by the axle sleeve with described centrifugal pump or balance hub, with balancing axial thrust, it is characterized in that, described seal ring, guide blade sleeve and balance set all adopt the sealing configuration described in claim 1 ~ 6.
8. a centrifugal pump, described centrifugal pump is single stage centrifugal pump, comprise seal ring and throat's nockbush, described seal ring is fixed on the pump housing of described centrifugal pump, coordinates, to realize sealing throttling with the impeller of described centrifugal pump, the axle sleeve of described throat nockbush and described centrifugal pump is used in conjunction with, to realize part throttle, it is characterized in that, described seal ring and described throat nockbush all adopt the sealing configuration described in claim 1 ~ 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134487.2A CN103953576B (en) | 2014-04-04 | 2014-04-04 | A kind of centrifugal pump sealing structure and using this sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134487.2A CN103953576B (en) | 2014-04-04 | 2014-04-04 | A kind of centrifugal pump sealing structure and using this sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103953576A true CN103953576A (en) | 2014-07-30 |
| CN103953576B CN103953576B (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410134487.2A Active CN103953576B (en) | 2014-04-04 | 2014-04-04 | A kind of centrifugal pump sealing structure and using this sealing structure |
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| CN (1) | CN103953576B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6367807B1 (en) * | 1998-10-19 | 2002-04-09 | Environamics Corporation | Labyrinth seal assembly |
| CN1510320A (en) * | 2002-12-17 | 2004-07-07 | Ħ�����蹫˾ | Internal sealing ring for roll machine oil slick bearing |
| GB2455320A (en) * | 2007-12-05 | 2009-06-10 | Meadows Mouldings | A sealing means including a carrier part and a sealing element |
| CN201896950U (en) * | 2011-01-24 | 2011-07-13 | 大连华阳光大密封有限公司 | Dry gas sealing pairing ring |
| CN102313020A (en) * | 2011-08-20 | 2012-01-11 | 常州朗博汽车零部件有限公司 | Split embedding engagement molded seal ring |
| CN102966589A (en) * | 2012-11-02 | 2013-03-13 | 三一能源重工有限公司 | Labyrinth sealing structure and mounting method thereof |
| CN103234047A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | End face high-pressure-resistant dynamic-pressure groove structure of mechanical seal static ring for pump |
| CN203796608U (en) * | 2014-04-04 | 2014-08-27 | 上海第一水泵厂有限公司 | Sealing structure and centrifugal pump employing same |
-
2014
- 2014-04-04 CN CN201410134487.2A patent/CN103953576B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6367807B1 (en) * | 1998-10-19 | 2002-04-09 | Environamics Corporation | Labyrinth seal assembly |
| CN1510320A (en) * | 2002-12-17 | 2004-07-07 | Ħ�����蹫˾ | Internal sealing ring for roll machine oil slick bearing |
| GB2455320A (en) * | 2007-12-05 | 2009-06-10 | Meadows Mouldings | A sealing means including a carrier part and a sealing element |
| CN201896950U (en) * | 2011-01-24 | 2011-07-13 | 大连华阳光大密封有限公司 | Dry gas sealing pairing ring |
| CN102313020A (en) * | 2011-08-20 | 2012-01-11 | 常州朗博汽车零部件有限公司 | Split embedding engagement molded seal ring |
| CN102966589A (en) * | 2012-11-02 | 2013-03-13 | 三一能源重工有限公司 | Labyrinth sealing structure and mounting method thereof |
| CN103234047A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | End face high-pressure-resistant dynamic-pressure groove structure of mechanical seal static ring for pump |
| CN203796608U (en) * | 2014-04-04 | 2014-08-27 | 上海第一水泵厂有限公司 | Sealing structure and centrifugal pump employing same |
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| Publication number | Publication date |
|---|---|
| CN103953576B (en) | 2017-01-04 |
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