CN101846095A - Compound restrictor ring - Google Patents
Compound restrictor ring Download PDFInfo
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- CN101846095A CN101846095A CN 201010181145 CN201010181145A CN101846095A CN 101846095 A CN101846095 A CN 101846095A CN 201010181145 CN201010181145 CN 201010181145 CN 201010181145 A CN201010181145 A CN 201010181145A CN 101846095 A CN101846095 A CN 101846095A
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- ring
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- restrictor
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Abstract
The invention belongs to the technical field of chemical pumps, and specifically relates to a compound restrictor ring used for pump sealing. The compound restrictor ring is provided with a hollow ring body which is filled with elastic sealing media. Accordingly, the compound restrictor ring is installed between an inner high-pressure shell and an outer low-pressure shell. When impellers rotate at a high speed in fluid to produce pumping lift with leakage, the compound restrictor ring plays the restricting effect between the inner barrel wall of a high-pressure shell and the outer barrel wall of a low-pressure shell, thereby improving the dynamic efficiency of the pump, reducing the leakage, and effectively solving the high energy consumption problem of a double-shell pump. Thus, the compound restrictor ring has the advantages of simple structure, good sealing and restricting effects and high reliability.
Description
Technical field
The invention belongs to the chemical pump technical field, be specifically related to a kind of compound restrictor ring that is used for pump seal.
Background technique
Traditional double Shell pump comprises the inboard High Pressure Shell and the low pressure housing in the outside, the double Shell pump is when operation, impeller in the High Pressure Shell is in the inner high speed rotation of fluid, produce lift, the gap outside seepage of the fluid in the High Pressure Shell between the double Shell of the effect lower edge of high pressure meanwhile, make barrel insertpump produce serious high energy consumption problem, need to be resolved hurrily.
Summary of the invention
The purpose of this invention is to provide a kind of compound restrictor ring, its simple structure seals the effective of current limliting, and the reliability height.
For achieving the above object, the present invention has adopted following technological scheme: a kind of compound restrictor ring, the ring body of this compound restrictor ring is set to the annulus of hollow shape, is filled with the elastic packing medium in the annulus.
Get by above-mentioned, this compound restrictor ring is installed between the low pressure housing in the inboard High Pressure Shell and the outside, when impeller when the fluid inner high speed rotate to produce lift and seepage takes place, because this compound restrictor ring forms metering function between High Pressure Shell inner tube wall and low pressure housing outer tube wall, therefore improved the dynamic efficiency of pump, reduced Leckage, solved the high energy consumption problem of barrel insertpump effectively, this shows, simple structure of the present invention, the effective and reliability of sealing current limliting is high.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the partial enlarged drawing of Fig. 2.
Embodiment
Shown in Fig. 1～3, a kind of compound restrictor ring, the ring body 10 of this compound restrictor ring is set to the annulus of hollow shape, is filled with elastic packing medium 20 in the annulus.
The Expanded graphite resistance to high temperature is good, have characteristics such as sealability excellence, compressibility and good springiness and oxidative stability height, also has extremely strong self-enrichment and plasticity simultaneously, can obtain tensile strength by process optimization is that 4.02MPa, compressive strength are the high-performance flexible graphite of 52.3MPa, has higher mechanical property.
In technique scheme, described ring body 10 can be involuted by the halfbody of two semi-annular shapes, the size of the halfbody of these two semi-annular shapes can be identical, also can be set to small one and large one, as long as the halfbody of two semi-annular shapes can involutoryly be a complete ring body 10; Also separated into two parts and being sheathed on respectively in the halfbody of two semi-annular shapes of described elastic packing medium 20 this moment, and form a complete seal ring by halved body involutory.
Two above-mentioned halfbodies are involutory mutually can be realized by welding, also can two diameters that the corresponding opening of halfbody is set to vary in size, and it is involutory to realize that the opening of the minor diameter of a halfbody is inserted the large diameter opening of another halfbody, forms a complete ring body 10 by welding or compacting again.
As further preferred version of the present invention, as shown in Figure 1, 2, described ring body 10 is made up of first semi-ring 11 and second semi-ring 12, first semi-ring 11 and second semi-ring 12 all are circular, be provided with the recess that holds elastic packing medium 20 on first semi-ring 11 and second semi-ring 12, the recess of described first semi-ring 11 and second semi-ring 12 is oppositely arranged and fastens mutually is an annulus.
Preferably, described first semi-ring 11 and second semi-ring 12 distribute about the radial symmetric of ring body 10, and also promptly the shape of first semi-ring 11 and second semi-ring 12 is identical, is convenient to stack mounting.
Described first semi-ring 11 and second semi-ring 12 are circular-arc transition from radially inner side to the radial outside of ring body 10, the arc length of the circular arc of first semi-ring 11 and second semi-ring 12 is equal to each other, and the arc end part of the arc end part of first semi-ring 11 and second semi-ring 12 is superimposed together mutually and constitutes a circle or ellipse.
The arc end part of the arc end part of described first semi-ring 11 and second semi-ring 12 is superimposed mutually, also promptly as shown in Figure 2, the circular arc port of first semi-ring 11 and second semi-ring 12 overlaps each other together and is pressed into an integral body, holds elastic packing medium 20 with the cavity that forms a sealing between first semi-ring 11 and second semi-ring 12.
As shown in Figure 2, the circular arc arc length that is superimposed together mutually of the circular arc of the circular arc of described first semi-ring 11 and second semi-ring 12 should be at least first semi-ring 11 or second semi-ring 12 the circular arc arc length 30%, also promptly the overlapped degree of two semi-rings should be not less than 30% of semi-ring arc length, to guarantee to obtain comparatively desirable sealing effect.
First semi-ring 11 among the present invention and second semi-ring 12 adopt 304 or the compression mouldings of 316L stainless steel materials, and the thickness of described stainless steel materials is 0.1～1.0mm, with the different pressures that adapts to pump work and the requirement of temperature.
Further, described ring body 10 upper edge ring bodies radially offer the through hole that runs through ring body, with when obtaining desirable sealing current limitation effect, reduce the pressure that this restrictor ring bears, improve its working life.
The operating temperature of this compound restrictor ring can reach 600 ℃, the operating pressure differential scope is 16MPa, mainly bear and be external pressure, the circular cross-section of ring body 10 can be pressed into flat during assembling, to produce 30～60% radial compression amount, make it at high temperature to come corresponding adjustment compensation rate according to the different thermal distortion of inner and outer shell.
Claims (10)
1. compound restrictor ring, it is characterized in that: the ring body of this compound restrictor ring (10) is set to the annulus of hollow shape, is filled with elastic packing medium (20) in the annulus.
2. compound restrictor ring according to claim 1 is characterized in that: described elastic packing medium (20) is an Expanded graphite.
3. compound restrictor ring according to claim 1 is characterized in that: described ring body (10) is made up of two halfbodies, halved body all be circular-arc along ring body cross section radially, and the opening of two halfbodies is oppositely arranged and is combined into an annulus.
4. according to any one described compound restrictor ring of claim 1 to 3, it is characterized in that: described ring body (10) upper edge ring body radially offer the through hole that runs through ring body.
5. compound restrictor ring according to claim 3, it is characterized in that: described ring body (10) is made up of first semi-ring (11) and second semi-ring (12), first semi-ring (11) and second semi-ring (12) all are circular, be provided with the recess that holds elastic packing medium (20) on first semi-ring (11) and second semi-ring (12), the recess of described first semi-ring (11) and second semi-ring (12) is oppositely arranged and fastens mutually is an annulus.
6. compound restrictor ring according to claim 5 is characterized in that: described first semi-ring (11) and second semi-ring (12) distribute about the radial symmetric of ring body (10).
7. compound restrictor ring according to claim 6, it is characterized in that: described first semi-ring (11) and second semi-ring (12) are circular-arc transition from radially inner side to the radial outside of ring body (10), the arc length of the circular arc of first semi-ring (11) and second semi-ring (12) is equal to each other, and the arc end part of the arc end part of first semi-ring (11) and second semi-ring (12) is superimposed together mutually and constitutes a circle or ellipse.
8. compound restrictor ring according to claim 7 is characterized in that: the circular arc arc length that is superimposed together mutually of the circular arc of the circular arc of described first semi-ring (11) and second semi-ring (12) should be at least first semi-ring (11) or second semi-ring (12) the circular arc arc length 30%.
9. according to each described compound restrictor ring of claim 5～8, it is characterized in that: described first semi-ring (11) and second semi-ring (12) employing 304 or the compression moulding of 316L stainless steel materials.
10. compound restrictor ring according to claim 9 is characterized in that: the thickness of described stainless steel materials is 0.1～1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010181145 CN101846095A (en) | 2010-05-20 | 2010-05-20 | Compound restrictor ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010181145 CN101846095A (en) | 2010-05-20 | 2010-05-20 | Compound restrictor ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101846095A true CN101846095A (en) | 2010-09-29 |
Family
ID=42770850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010181145 Pending CN101846095A (en) | 2010-05-20 | 2010-05-20 | Compound restrictor ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101846095A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696546A (en) * | 2004-05-14 | 2005-11-16 | 宁波天生密封件有限公司 | Sealing gasket and manufacturing method |
| EP1886009A2 (en) * | 2005-05-23 | 2008-02-13 | Federal-Mogul Corporation | Coated power cylinder components for diesel engines |
| CN201475311U (en) * | 2009-08-26 | 2010-05-19 | 袁奕琳 | Metal sealing ring |
| CN201679759U (en) * | 2010-05-20 | 2010-12-22 | 合肥工业大学 | Composite current-restricting ring |
-
2010
- 2010-05-20 CN CN 201010181145 patent/CN101846095A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696546A (en) * | 2004-05-14 | 2005-11-16 | 宁波天生密封件有限公司 | Sealing gasket and manufacturing method |
| EP1886009A2 (en) * | 2005-05-23 | 2008-02-13 | Federal-Mogul Corporation | Coated power cylinder components for diesel engines |
| CN201475311U (en) * | 2009-08-26 | 2010-05-19 | 袁奕琳 | Metal sealing ring |
| CN201679759U (en) * | 2010-05-20 | 2010-12-22 | 合肥工业大学 | Composite current-restricting ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100929 |