CN202073825U - Sealing device for high-temperature, high-pressure and corrosion-resistant pump - Google Patents
Sealing device for high-temperature, high-pressure and corrosion-resistant pump Download PDFInfo
- Publication number
- CN202073825U CN202073825U CN2011201869196U CN201120186919U CN202073825U CN 202073825 U CN202073825 U CN 202073825U CN 2011201869196 U CN2011201869196 U CN 2011201869196U CN 201120186919 U CN201120186919 U CN 201120186919U CN 202073825 U CN202073825 U CN 202073825U
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- pump
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Abstract
The utility model relates to a shaft seal of a horizontal centrifugal pump for the coal chemical industry, petroleum chemical industry and coal works, in particular to a sealing device of a centrifugal pump which is used under high-temperature, high-pressure and high-corrosion working conditions. A pump cover of the sealing device is provided with a cooling water cavity, and is connected with a joint; a mechanical seal gland bush is provided with flushing water holes which lead to a back flushing water sealing cavity and an end face flushing water sealing cavity respectively, and is correspondingly connected with a joint; and a mechanical seal on a shaft sleeve has a balanced mechanical seal structure in which a movable ring is compressed on a stationary ring through a spring. By adopting the sealing device, the technical problems of conveying of a high-temperature, high-pressure and high-corrosion medium with the centrifugal pump are solved, the using stability and reliability of the bearing are ensured, and the service life of the pump is prolonged; and moreover, the sealing device has high airtightness, and is convenient to operate and maintain.
Description
Technical field
The utility model is Coal Chemical Industry, petrochemical industry, the coal works axle envelope with horizontal centrifugal pump, the particularly seal arrangement of the centrifugal pump that uses under the operating mode of high temperature, high pressure, high abrasion.
Background technique
At present, in the utilization of Coal Chemical Industry, find with horizontal centrifugal pump, carry the strong medium of high temperature, high pressure, abrasion that the axle envelope of pump is required than higher, belong to the high-pressure mechanical seal category, surpassed the API682 operating range, and traditional balance type single mechanical end face seal can't be satisfied this working condition requirement well, be in particular in: under high temperature condition, only adopt general sparge water that the sealing surface of balance type single mechanical end face seal parts is cooled off, whole Seal cage is effectively lowered the temperature, the time regular meeting gasification phenomenon occurs and influence the operation of whole pump; Though sealing member material possesses certain wear-corrosion resistance, the sliding of rotating ring is poor under high temperature condition, thereby influences sealing effect; Under the high pressure, the Seal cage of traditional shaft seal structure is less than normal, can't reduce Seal cage pressure effectively, and the strength and stiffness of seal ring are not enough, and easy deformation on the structure causes the axle envelope life-span short, needs frequent maintain and replace.Therefore should be at above problem, the shaft seal structure of pump is improved.
Summary of the invention
The technical problems to be solved in the utility model provides the seal arrangement that a kind of high temperature resistant, high pressure, abrasion centrifugal pump are used, and it is reliable that this structure has sealing, and characteristics such as convenient for maintaining, are increased economic efficiency at prolongation machine envelope working life.
Technical problem of the present utility model solves by the following technical programs: be processed with cooling water chamber on the pump cover and be connected to joint, be processed with the flushing water hole and the correspondence of leading to rushed back wash water Seal cage and end face sparge water Seal cage respectively on the machine sealed cover and be connected to joint, the machine of axle sleeve position envelope adopts spring that rotating ring is pressed on balance type machine seal structure on the stationary ring.
Described balance type machine seal structure is, fixes an installation sleeve at axle sleeve, and the spring of packing in the reaming chamber, end of cover, spring press in Spielpassung and be contained in rotating ring on the axle sleeve, and stationary ring then is contained in the endoporus of machine sealed cover with transition fit; At the stationary ring of rushed back wash water Seal cage position and the gap 〉=10mm of shaft room.
The end face sparge water is gone into joint and is connected high-pressure service pump, and high-pressure service pump connects the process water of handling through cold filtration; The rushed back wash water Seal cage end face of machine sealed cover is provided with outside framework oil seal.
The beneficial effects of the utility model are: 1. design has cooling chamber on pump cover, can cool off the circulation that medium carries out to a certain degree, improved machine envelope applying working condition, adopt two flushing mechanisms of the back side and end face, take away sealing surface place heat effectively, reduced the Seal cage temperature, prevented the liquid film gasification, improve lubricating condition, also prevented the formation of dried running, impurity productive set and air bag.The pressing technology water of end face sparge water for handling through cold filtration, but both cooling chamber body medium temperature can guarantee again the concentration of flow process medium to have solved non-refractory in traditional machine envelope, and clear water enters the problem that flow process reduces concentration.2. axle envelope material is selected alloy steel material for use, makes sliding better; Dynamic and static ring adopts carbofrax material, has resisting temperature cataclysm preferably; Secondary seal adopts fluorine rubber, has higher tensile breaking strength, and resistance to heat is good.3. in the shaft seal structure design, increase rushed back wash water cavity, can reduce the temperature of Seal cage effectively, sealing surface exists liquid film to make lubricating condition good, has also prolonged the machine envelope life-span simultaneously; Washing solution in the salable firmly rushed back wash water chamber of the outside framework oil seal of machine sealed cover prevents to leak, and keeps the health of surrounding enviroment.4. the balance type machine of axle sleeve position envelope has guaranteed the high-voltage resistance capability of machine envelope, has solved traditional machine and has been enclosed in leakage in the use, short problem of life-span.
Therefore, seal arrangement of the present utility model has solved the technical barrier that centrifugal pump is carried high temperature, high pressure, strong abrasion medium, and not only sealing is good, and convenient operating maintenance, has guaranteed stability, the reliability of bearing in using, and has prolonged the life-span of pump.
Description of drawings
Below in conjunction with accompanying drawing and enforcement the utility model is further described.
Fig. 1 is a main TV structure schematic representation of the present utility model.
Fig. 2 is a side-looking structural representation of the present utility model.
Fig. 3 is a local enlarged diagram of the present utility model.
Among the figure: axle sleeve 1, housing screw 2, O shape circle 3, pump cover 4, bearing support 5, O shape circle 6, machine sealed cover 7, stop pin 8, the rushed back wash water goes out joint 9, the pump cover cooling water is gone into joint 10, the rushed back wash water is gone into joint 11, the pump cover cooling water goes out joint 12, the end face sparge water is gone into joint 13, outside framework oil seal 14, O shape circle 15, stationary ring 16, rotating ring 17, O shape circle 18, spring 19, body 20, axle 21, rushed back wash water hole 22, end face flushing water hole 23, end face sparge water Seal cage 24, rushed back wash water Seal cage 25, installation sleeve 26.
Embodiment
Referring to each accompanying drawing, be processed with cooling water chamber on the pump cover 4 and be connected to that the pump cover cooling water is gone into joint 10 and the pump cover cooling water goes out joint 12, form the circulation cooling channel.Be processed with rushed back wash water hole 22 and end face flushing water hole 23 on the machine sealed cover 7, they respectively correspondence lead to rushed back wash water Seal cage 25 and end face sparge water Seal cage 24, rushed back wash water hole 22 is connected to that the rushed back wash water is gone into joint 11 and the rushed back wash water goes out joint 9, forms another circulation cooling channel; End face flushing water hole 23 connects the end face sparge water and goes into joint 13, and the end face sparge water is gone into joint 13 and connected high-pressure service pump, and high-pressure service pump connects the process water of handling through cold filtration.The machine envelope of axle sleeve 1 position adopts balance type machine seal structure, promptly on axle sleeve 1, fix an installation sleeve 26, the spring 19 of packing in the reaming chamber, end of cover, spring 19 press in Spielpassung and are contained in rotating ring 17 on the axle sleeve 1, and 16 of stationary rings are contained in transition fit in the endoporus of machine sealed cover 7.Rushed back wash water Seal cage 25 end faces of machine sealed cover 7 are provided with outside framework oil seal 14.
Installation step of the present utility model is: 1) stationary ring 16 is loaded on the machine sealed cover 7, loads onto outside framework oil seal 14; 2) machine envelope (containing body 20, spring 19, rotating ring 17) is set on the axle sleeve 1, tightens housing screw 2; 3) stationary ring 16 that installs, the machine sealed cover 7 of outside framework oil seal 14 are loaded on the axle sleeve 1; 4) axle sleeve 1 that will install machine envelope is packed on the axle 21; 5) pump cover 4 is seated after, cooperate, compress with machine sealed cover 7; 6) connect two joints of rushed back wash water; 7) connect the joint of end face sparge water; 8) connect two joints of pump cover place cooling water.
Claims (3)
1. a high-temperature and high-pressure wearable loses Sealing used for pump, it is characterized in that: be processed with cooling water chamber on the pump cover and be connected to joint, be processed with the flushing water hole and the correspondence of leading to rushed back wash water Seal cage and end face sparge water Seal cage respectively on the machine sealed cover and be connected to joint, the machine of axle sleeve position envelope adopts spring that rotating ring is pressed on balance type machine seal structure on the stationary ring.
2. by the described high-temperature and high-pressure wearable erosion of claim 1 Sealing used for pump, it is characterized in that: described balance type machine seal structure is, fix an installation sleeve at axle sleeve, the spring of packing in the reaming chamber, end of cover, spring presses in Spielpassung and is contained in rotating ring on the axle sleeve, and stationary ring then is contained in the endoporus of machine sealed cover with transition fit; At the stationary ring of rushed back wash water Seal cage position and the gap 〉=10mm of shaft room.
3. by the described high-temperature and high-pressure wearable erosion of claim 2 Sealing used for pump, it is characterized in that: the end face sparge water is gone into joint and is connected high-pressure service pump, and high-pressure service pump connects the process water of handling through cold filtration; The rushed back wash water Seal cage end face of machine sealed cover is provided with outside framework oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201869196U CN202073825U (en) | 2011-06-06 | 2011-06-06 | Sealing device for high-temperature, high-pressure and corrosion-resistant pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201869196U CN202073825U (en) | 2011-06-06 | 2011-06-06 | Sealing device for high-temperature, high-pressure and corrosion-resistant pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073825U true CN202073825U (en) | 2011-12-14 |
Family
ID=45111929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201869196U Expired - Lifetime CN202073825U (en) | 2011-06-06 | 2011-06-06 | Sealing device for high-temperature, high-pressure and corrosion-resistant pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202073825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9982683B2 (en) | 2014-12-29 | 2018-05-29 | Boulden Company, Inc. | Bushing seal for use in a pump |
-
2011
- 2011-06-06 CN CN2011201869196U patent/CN202073825U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9982683B2 (en) | 2014-12-29 | 2018-05-29 | Boulden Company, Inc. | Bushing seal for use in a pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |