CN1380498A - Self-sealing high-temp. spherical bearing - Google Patents
Self-sealing high-temp. spherical bearing Download PDFInfo
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- CN1380498A CN1380498A CN 02115879 CN02115879A CN1380498A CN 1380498 A CN1380498 A CN 1380498A CN 02115879 CN02115879 CN 02115879 CN 02115879 A CN02115879 A CN 02115879A CN 1380498 A CN1380498 A CN 1380498A
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- spherical bearing
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- high temperature
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Abstract
The present invention relates to a self-sealing high-temp. spherical bearing, including spherical bearing seat and spherical body, the spherical body is mounted in the bearing seat in the mode of movable fit. It is characterized by that on the inner wall of the spherical bearing seat the sealing groove is set, and interior of sealing groove is equipped with sealing ring, so that it can completely prevent gas from leaking in the course of closing valve body.
Description
Technical field
The present invention relates to the spherical bearing that uses under high temperature the spherical bearing part, particularly hot environment.
Technical background
The fuel gas buring valve is the key equipment in the large-scale iron works gas-liquid two-phase flow device systems, and in order to prevent gas leakage, the ideal structure of fuel gas buring valve is to be designed to sealed construction, makes combustion gas satisfy the thermal source requirement of ironmaking by valve in enclosed environment.Yet, because the operating temperature of combustion gas is up to 1200 ℃, be about 750 ℃ through the temperature of heat insulation processing rear valve body, reach temperature in valve body supporting place up to 600 ℃.Except high temperature, the spherical bearing of valve body has lower friction factor to drive satisfying outside the closed valve unlatching of fluid power machine remote control except requiring, and also requires to have certain selfsealings performance to prevent the gas leakage in the closed procedure of valve body pass.
Heavy load based on the high-temperature self-lubrication spherical bearing, low speed and frictional interface are difficult for forming characteristics such as oil film, the high temperature spherical bearing that generally adopts in the engineering as shown in Figure 4 at present, it is by spherical bearing block 1, spherical surface body 5 is formed, spherical surface body 5 is to be installed in movingly in the bearing support 1, spherical surface body 5 is provided with oil storage tank 10, oil storage tank 10 contains high temperature solid lubricant, oiling agent mostly contains organic binder, by Chinese patent database (1985-2001) and the external online (INPADOC of DIALOG, JAPIO, EUROPEAN, WIPO/PCT and U.S) patent retrieval of 1971-2001 of system, because organic binder is subjected to the restriction of temperature, the serviceability temperature of this class bearing all can not be above 500 ℃, and this class bearing is only considered its high-temperature self-lubrication performance in the function design, and sealing has only employing additional mechanism providing additional operation (as adopting the side cover sealing) to realize.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of energy self-packing high temperature spherical bearing.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: it comprises spherical bearing block and spherical surface body, and spherical surface body is installed in the bearing support with transition fit, it is characterized in that: the inwall of spherical bearing block is provided with seal groove, is provided with seal ring in the seal groove.
Owing on the inwall of spherical bearing block, be provided with seal groove, be provided with seal ring in the seal groove, solved the sealing of high temperature spherical bearing, need not adopt the sealing additional mechanism providing additional operation, just can prevent the gas leakage in the closed procedure of valve body pass.
Description of drawings
Fig. 1 is the structure sectional view of the embodiment of the invention
Fig. 2,3 is an embodiment of the invention spherical bearing block sectional view
Fig. 4 is the structure sectional view of the inserted high temperature spherical bearing of prior art
Specific embodiments
The embodiment of the invention as shown in Figure 1, 2, 3, it is made up of spherical bearing block 1, seal ring 3, bearing outside 4, spherical surface body 5 and bearing gland 6.The material of spherical bearing block 1 and spherical surface body 5 is prepared from by high speed steel, and their tactful expansion coefficient is (10～12) * 10
-6/ ℃.Spherical surface body 5 is to be installed in movingly in the bearing support 1, and bearing support 1 is installed in the bearing outside 4 with transition fit, and bearing outside 4 is formed fully by the linear expansion coeffcient mold heat steel close with high speed steel; The design curvature of spherical bearing block 1 is identical with spherical surface body 5, and in the diametric(al) unanimity; The axially locating of spherical bearing block 1 is realized by stainless steel screw 7 by gland 6.Maximum diameter place on spherical bearing block 1 inwall is provided with seal groove 8, and elevated-temperature seal ring 3 is installed in the sealing groove 8; Be arranged with two or more rows hole 2 respectively on the inwall of the spherical bearing block 1 of seal groove 8 both sides, self lubricating material 9 is installed in the hole 2, hole 2 forms labyrinth-like to be staggered.As shown in Figure 2, spherical bearing block 1 is made up of two symmetrical hemisphere faces, and fixing with screw 11 and locating stud 12 at two hemispheres hand-deliver interface.
The self-lubricating sintered body of installing in the spherical bearing block hole 2 is the nickel base powder metallurgical material sintering body of presintering, Ni-based sintering body is to be the composition of Ni by the Cu that accounts for gross weight 8～12%, 5～8% CaF, 6～9% NaF and surplus, form through 950～1050 ℃ of sintering, its tactful expansion coefficient is (4～6) * 10
-5/ ℃.
Because the hotline expansion coefficient of the self lubricating material 9 in elevated-temperature seal ring 3 in the seal groove 8 and the spherical bearing block hole 2 all is higher than the linear expansion coeffcient of bearing support 1 matrix of high speed steel, therefore, when bearing is at high temperature worked; The selfsealings working surface is formed in the peak and the both sides of spherical surface body in the surface that the size increase of seal ring 3 and self lubricating material 9 and inverse expansion are pressed to spherical surface body 5.
Because the high temperature self-lubricating composite 9 that adopts among the present invention is the Ni-based sintering body of pre-preparation, except the high temperature limit that has surmounted organic binder, have good high-temperature self-lubricating abrasion-resistant performance again, it can worked more than 600 ℃ chronically; In addition,, therefore, can regulate geomery, linear expansion coeffcient and tribological property effectively in the technology of broad and compositional range, with the designing requirement of the spherical bearing that satisfies different size because the Ni-based sintering body of pre-preparation can prepare.
The present invention utilizes the performance of the hotline expansion coefficient and the self lubricating material of material, on structural design, selflubricating and self-sealing function are combined as one, make its compact structure, easy to use, be specially adapted to as the gap swinging mounting in the constant-pressure and high-temperature environment of high-temperature fuel gas valve valve and so on.
Claims (10)
1, self-sealing high-temp spherical bearing, it comprises spherical bearing block (1) and spherical surface body (5), spherical surface body (5) is characterized in that to be installed in movingly in the bearing support (1): the inwall of spherical bearing block (1) is provided with seal groove (8), is provided with seal ring (3) in the seal groove (8).
2, high temperature spherical bearing as claimed in claim 1 is characterized in that: seal groove (8) is arranged on the maximum diameter place of spherical bearing block (1) inwall.
3, high temperature spherical bearing as claimed in claim 1 or 2 is characterized in that: be respectively equipped with hole (2) on the inwall of the spherical bearing block (1) of seal groove (8) both sides, self lubricating material (9) is installed in hole (2).
4, high temperature spherical bearing as claimed in claim 3 is characterized in that: the tactful expansion coefficient of self lubricating material (9) is (4～6) * 10
-5/ ℃.
5, as claim 3 or 4 described high temperature spherical bearings, it is characterized in that: self lubricating material (9) is Ni-based sintering body, Ni-based sintering body is to be the composition of Ni by the Cu that accounts for gross weight 8～12%, 5～8% CaF, 6～9% NaF and surplus, forms through 950～1050 ℃ of sintering.
6, high temperature spherical bearing as claimed in claim 1 or 2 is characterized in that: seal ring (3) material is the metallic graphite carbon filler, and its tactful expansion coefficient is (10～15) * 10
-5/ ℃.
7, high temperature spherical bearing as claimed in claim 3 is characterized in that: the hole (2) of seal groove (8) both sides, every side are arranged respectively more than two rows, and are staggered.
8, high temperature spherical bearing as claimed in claim 1 or 2 is characterized in that: the material of spherical bearing block (1) and spherical surface body (5) is prepared from by high speed steel, and the tactful expansion coefficient of spherical bearing block 1 and spherical surface body 5 is (10～12) * 10
-6/ ℃.
9, high temperature spherical bearing as claimed in claim 1 or 2 is characterized in that: it also comprises bearing outside (4), and bearing support (1) is installed in the bearing outside (4).
10, high temperature spherical bearing as claimed in claim 1 or 2 is characterized in that: it also comprises gland (6), bearing support (1) axially by gland (6) by screw (7) location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021158797A CN1170073C (en) | 2002-05-22 | 2002-05-22 | Self-sealing high-temp. spherical bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021158797A CN1170073C (en) | 2002-05-22 | 2002-05-22 | Self-sealing high-temp. spherical bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1380498A true CN1380498A (en) | 2002-11-20 |
| CN1170073C CN1170073C (en) | 2004-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021158797A Expired - Fee Related CN1170073C (en) | 2002-05-22 | 2002-05-22 | Self-sealing high-temp. spherical bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1170073C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893037A (en) * | 2010-07-23 | 2010-11-24 | 中国重型机械研究院有限公司 | Spherical self-aligning and split self-lubricating sliding bearing assembly |
| CN102146961A (en) * | 2010-02-10 | 2011-08-10 | 上海卫星工程研究所 | Ball bearing assembly for satellite deployment mechanism |
| CN103277415A (en) * | 2013-05-09 | 2013-09-04 | 福建省高创机械股份有限公司 | Wearable screw conveyor hanger bearing |
-
2002
- 2002-05-22 CN CNB021158797A patent/CN1170073C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146961A (en) * | 2010-02-10 | 2011-08-10 | 上海卫星工程研究所 | Ball bearing assembly for satellite deployment mechanism |
| CN101893037A (en) * | 2010-07-23 | 2010-11-24 | 中国重型机械研究院有限公司 | Spherical self-aligning and split self-lubricating sliding bearing assembly |
| CN103277415A (en) * | 2013-05-09 | 2013-09-04 | 福建省高创机械股份有限公司 | Wearable screw conveyor hanger bearing |
| CN103277415B (en) * | 2013-05-09 | 2015-09-09 | 福建省高创机械股份有限公司 | A kind of wear-resisting spiral shell fortune machine hanger bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1170073C (en) | 2004-10-06 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041006 Termination date: 20130522 |