CN221196079U - Mechanical seal of stirrer of thermal power plant - Google Patents
Mechanical seal of stirrer of thermal power plant Download PDFInfo
- Publication number
- CN221196079U CN221196079U CN202322976691.6U CN202322976691U CN221196079U CN 221196079 U CN221196079 U CN 221196079U CN 202322976691 U CN202322976691 U CN 202322976691U CN 221196079 U CN221196079 U CN 221196079U
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- Prior art keywords
- ring
- sealing
- gland
- shaft sleeve
- bearing
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- 238000007789 sealing Methods 0.000 claims abstract description 90
- 210000004907 gland Anatomy 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000003068 static effect Effects 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000035939 shock Effects 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 230000000670 limiting effect Effects 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 13
- 239000010687 lubricating oil Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model relates to the technical field of mechanical sealing, in particular to a mechanical sealing of a stirrer of a thermal power plant; the utility model discloses a mechanical seal of a stirrer of a thermal power plant, which comprises a shaft sleeve device, a gland device, a core sealing device, a bearing device, a positioning device and a shaft sleeve transmission device, wherein a rotating shaft is sleeved on the inner side wall of the shaft sleeve device, and a first O-shaped ring shaft seal and a second O-shaped ring shaft seal are arranged between the shaft sleeve device and the rotating shaft; a flushing fluid inlet is formed in the pump body to flush and cool the sealing end face; the gland device is provided with a sealing liquid inlet and a sealing liquid outlet, and the sealing liquid injected into the sealing cavity is circularly washed; the bearing end cover is symmetrically provided with two holes, and is respectively provided with an oil filling nozzle and an oil cup, the device has compact structure, is convenient to process and assemble, is safe and reliable, improves the sealing property, reliability and stability of the stirrer shaft sealing device, meets the specific use requirement on site, and is successfully applied to a plurality of large-scale thermal power plants.
Description
Technical Field
The utility model relates to the technical field of mechanical sealing, in particular to a mechanical sealing of a stirrer of a thermal power plant.
Background
Along with the rapid development of the economy in China, the electric power demand is continuously increased, the pollution emission is also increased, and at present, the electric power source in China is mainly obtained from thermal power generation, however, sulfur dioxide, nitrogen oxides and the like released by coal combustion generate great threat to the environment, so that the desulfurization device of the thermal power plant is extremely important for environmental protection and human health.
The application of the desulfurization stirrer is an important means for preventing slurry from precipitating and coagulating by a desulfurization device of a thermal power plant and enabling the slurry to fully oxidize and react, however, the existing stirrer seal of the thermal power plant has serious corrosion and abrasion and very low service life due to acid and alkali components of the slurry, a large number of granular stones and the like, and particularly, the filler type seal is adopted by part of the power plant, so that the power loss of equipment is high, the abrasion to a rotating shaft is serious, the sealing effect is poor, the production is influenced, and the environment is polluted.
Disclosure of utility model
The utility model aims to provide a mechanical seal of a stirrer of a thermal power plant, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a stirrer mechanical seal of thermal power plant, includes shaft sleeve device, gland device, core sealing device, bearing device, positioner and shaft sleeve transmission, shaft sleeve device's inside wall has cup jointed the pivot, be equipped with first O shape circle bearing seal and second O shape circle bearing seal between shaft sleeve device and the pivot, be equipped with the rotating ring anti-rotation pin in shaft sleeve device's the moving ring mounting groove, be furnished with first shock attenuation protective sheath on the rotating ring anti-rotation pin, the spraying has Cr 2O3 on shaft sleeve device's P, Q two sides respectively, shaft sleeve device is equipped with spacing groove and transfer floor, core sealing device comprises moving ring, moving ring radial auxiliary seal, moving ring axial auxiliary seal's movable ring subassembly, quiet ring subassembly and the elastic element that the push ring constitutes, gland device includes quiet ring seat and gland two parts, and quiet ring seat part comprises quiet ring seat main part, radial O shape circle, first axial O shape circle and connecting screw, the gland part comprises gland main part, second axial O shape circle, third axial O shape circle and skeleton oil blanket, the retaining cap comprises sealing cover, sealing washer, bearing pad, two pass through gland and gland B in the gland and transfer plate, wherein, the gland plate is located on shaft sleeve device and the gland, and the transfer floor, wherein, gland B passes through the gland and the gland, and the gland.
Preferably, the sealing baffle cover and the bearing gland are respectively provided with a first star-shaped sealing ring and a second star-shaped sealing ring, and the first star-shaped sealing ring and the second star-shaped sealing ring are respectively in sliding fit with two spraying surfaces P, Q on the shaft sleeve device.
Preferably, the stationary ring seat is provided with a stationary ring anti-rotation pin, the root of the stationary ring anti-rotation pin is plug welded on the stationary ring seat, and the stationary ring anti-rotation pin is provided with a second shock absorption protective sleeve.
Preferably, the outer side wall of the capping device is provided with a liquid sealing port B and a liquid sealing port C, and the liquid sealing port B and the liquid sealing port C are communicated with a sealing cavity of the capping device.
Preferably, the bearing gland is symmetrically provided with two interfaces E and F, the interface E is provided with an oil filling nozzle, and the interface F is provided with an oil cup.
Compared with the prior art, the utility model has the following beneficial effects:
The elastic element is external, is not contacted with slurry, can fully ensure the performance and service life of the elastic element, simultaneously, metal parts contacted with media are all made of corrosion-resistant and abrasion-resistant materials, each sealing point and vulnerable parts are subjected to structure and material optimization, and part of the positions are sealed by adopting a double-safety mode of double sealing points, so that the service cycle of mechanical sealing is effectively prolonged.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present utility model;
FIG. 2 is a right side view of a three-dimensional structure of an embodiment of the present utility model;
FIG. 3 is a schematic diagram of an embodiment of the present utility model;
FIG. 4 is a partial view in the direction A of FIG. 3;
Fig. 5 is a front cross-sectional view of an embodiment of the present utility model.
In the figure: 1. a sleeve device; 2. a capping device; 3. a core seal; 4. a bearing device; 5. a positioning device; 6. a sleeve transmission; F. a rotating shaft; 1.1, a first O-ring shaft seal; 1.2, a second O-shaped ring shaft seal; 1.3, rotating ring anti-rotation pin; 1.4, a first shock absorption protective sleeve; 3.1, moving ring; 3.2, radial auxiliary sealing rings of the movable ring; 3.3, axially assisting the sealing ring by the movable ring; 3.4, static ring; 3.5, a static ring sealing ring; 3.6, pushing ring; 3.7, an elastic element; 2.1, a static ring seat; 2.1.1, a stationary ring seat main body; 2.1.2 radial O-rings; 2.1.3, a first axial O-ring; 2.1.6, connecting screws; 2.2, capping; 2.2.1, gland body; 2.2.2 second axial O-ring; 2.2.3, third axial O-ring; 2.2.4, skeleton oil seal; 4.1, sealing a baffle cover; 4.2, a bearing; 4.3, a bearing gland; 4.4, sealing gasket; 5.1, limiting plates; 5.2, screws; 6.1, an expansion ring; 6.2, a transmission ring A;6.3, a transmission ring B;6.4, bolts; 4.1.1, a first star-shaped sealing ring; 4.3.1, a second star-shaped sealing ring; 2.1.4, static ring anti-rotation pin; 2.1.5, a second shock absorption protective sleeve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, a mechanical seal of a stirrer in a thermal power plant comprises a shaft sleeve device 1, a gland device 2, a core sealing device 3, a bearing device 4, a positioning device 5 and a shaft sleeve transmission device 6, wherein a rotating shaft F is sleeved on the inner side wall of the shaft sleeve device 1, a first O-shaped ring shaft seal 1.1 and a second O-shaped ring shaft seal 1.2 are arranged between the shaft sleeve device 1 and the rotating shaft F, a moving ring anti-rotation pin 1.3 is arranged in a moving ring mounting groove of the shaft sleeve device 1, a first shock absorption protective sleeve 1.4 is arranged on the moving ring anti-rotation pin 1.3, and the moving ring anti-rotation pin 1.3 is prevented from falling off due to the impact of the moving ring 3.1 when the thermal power plant is started or stopped; cr 2O3 is sprayed on two surfaces of P, Q of the shaft sleeve device 1 respectively, so that the service life of the shaft sleeve device 1 can be effectively prolonged, and the shaft sleeve device 1 is provided with a limit groove and a transmission table.
The core sealing device 3 is composed of a movable ring assembly consisting of a movable ring 3.1, a movable ring radial auxiliary sealing ring 3.2 and a movable ring axial auxiliary sealing ring 3.3, a stationary ring assembly consisting of a stationary ring 3.4, a stationary ring sealing ring 3.5 and a push ring 3.6 and an elastic element 3.7, wherein the elastic element 3.7 provides compensation force for the movable ring 3.1 through the push ring 3.6, the movable ring 3.1 is kept to be attached to the end face of the stationary ring 3.4, and a liquid film is formed between the end faces by a medium, so that a main sealing point of the mechanical sealing device is formed.
The gland device 2 comprises a static ring seat 2.1 and a gland 2.2, wherein the static ring seat 2.1 consists of a static ring seat main body 2.1.1, a radial O-shaped ring 2.1.2, a first axial O-shaped ring 2.1.3 and a connecting screw 2.1.6, the gland 2.2 consists of a gland main body 2.2.1, a second axial O-shaped ring 2.2.2, a third axial O-shaped ring 2.2.3 and a framework oil seal 2.2.4, the static ring seat 2.1 is matched with the gland 2.2, and is fixedly connected through the connecting screw 2.1.6, and a seal between the static ring seat 2.1 and the gland 2.2 is formed with the assistance of the second axial O-shaped ring 2.2.2 and the third axial O-shaped ring 2.2.3.
The bearing device 4 comprises a sealing baffle cover 4.1, a bearing 4.2, a bearing gland 4.3 and a sealing gasket 4.4, wherein the sealing baffle cover 4.1 and the bearing gland 4.3 are respectively provided with a first star-shaped sealing ring 4.1.1 and a second star-shaped sealing ring 4.3.1, the bearing gland 4.3 is symmetrically provided with two interfaces E, F, the interface E is provided with an oil filling nozzle for supplementing lubricating oil in a bearing cavity, the interface F is provided with an oil cup, and the oil level of the lubricating oil in the bearing cavity is convenient to observe.
The positioning device 5 consists of a limiting plate 5.1 and a screw 5.2, wherein the limiting plate 5.1 is connected to the bearing gland 4.3 and the gland main body 2.2.1 through the screw 5.2 and is inserted into a limiting groove of the shaft sleeve device 1, so that the working length of the device is determined.
The shaft sleeve transmission device 6 comprises an expansion ring 6.1, a transmission ring A6.2, a transmission ring B6.3 and bolts 6.4, wherein the transmission ring A6.2 and the transmission ring B6.3 are clamped on the expansion ring 6.1 through the bolts 6.4, the shaft sleeve transmission device 6 is arranged on a transmission table of the shaft sleeve device 1, the shaft sleeve device 1 is fastened on the rotating shaft F through the enclasping force, and the shaft sleeve transmission device 6 is reliable in transmission and does not hurt the rotating shaft F.
Working principle: when the rotating shaft F rotates, the shaft sleeve driving device 6 drives the movable ring 3.1 in the shaft sleeve device 1 and the core sealing device 3 to rotate, elastic elements 3.7 are uniformly distributed in spring holes of the gland device 2, compensation force is provided for the stationary ring 3.4 through the push ring 3.6, the end faces of the movable stationary ring 3.4 are mutually attached, sealing for slurry is formed under the cooperation of the second axial O-shaped ring 2.2.2 and the third axial O-shaped ring 2.2.3, when the device starts to operate, the collision of the movable ring 3.1 and the stationary ring 3.4 on the movable ring anti-rotation pin 1.3 and the stationary ring anti-rotation pin 2.1.4 is reduced, the first shock absorption protective sleeve 1.4 and the second shock absorption protective sleeve 2.1.5 are respectively arranged on the movable ring anti-rotation pin 1.3 and the stationary ring anti-rotation pin 2.1.4, meanwhile, sealing liquid is prevented from flowing out of a sealing liquid sealing cavity, a framework oil seal 2.2.4 is arranged on the gland 2.2 for ensuring that sealing liquid does not flow out of the sealing liquid, when external sealing liquid is introduced from an interface B of the gland device 2, the interface C is introduced, the sealing liquid on the end faces of the interface C can not affect the sealing machine, the end faces of the sealing machine can not be influenced by the sealing liquid, and the sealing parameters of the sealing machine can not be influenced by the sealing liquid, and the sealing end faces of the sealing machine can be timely, the sealing parameters of the sealing end face can be prevented from the sealing the end face.
The bearing cavity of the gland device 3 is internally provided with a bearing 4.2, the friction coefficient of equipment rotation can be reduced due to the action of the bearing, the center position of the equipment can be kept fixed, thus the running stability of the whole mechanical seal is ensured, meanwhile, in order to ensure that bearing lubricating oil does not enter the liquid sealing cavity, the bearing cavity is internally provided with a sealing baffle cover 4.1, the bearing cavity is axially and radially sealed through a first star-shaped sealing ring 4.1.1 and a third axial O-shaped ring 2.2.3, the bearing oil loss is avoided, the lubricating oil for maintaining the bearing running in the bearing cavity is added into the bearing cavity through an oil filling nozzle of an interface E of the bearing gland 4.3, meanwhile, an oil filling cup is arranged on an interface F, the lubrication oil level in the bearing cavity is convenient to observe, and the bearing lubricating oil is sealed through a sealing gasket 4.4 and a second star-shaped sealing ring 4.3.1 in order to ensure that the bearing lubricating oil does not leak into the outside atmosphere.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a agitator mechanical seal of thermal power plant which characterized in that: the novel hydraulic sealing device comprises a shaft sleeve device (1), a gland device (2), a core sealing device (3), a bearing device (4), a positioning device (5) and a shaft sleeve transmission device (6), wherein a rotating shaft (F) is sleeved on the inner side wall of the shaft sleeve device (1), a first O-shaped ring shaft seal (1.1) and a second O-shaped ring shaft seal (1.2) are arranged between the shaft sleeve device (1) and the rotating shaft (F), a movable ring anti-rotation pin (1.3) is arranged in a movable ring mounting groove of the shaft sleeve device (1), a first shock absorption protective sleeve (1.4) is arranged on the movable ring anti-rotation pin (1.3), cr 2O3 is respectively sprayed on two surfaces of P, Q of the shaft sleeve device (1), the shaft sleeve device (1) is provided with a limiting groove and a transmission platform, the core sealing device (3) comprises a movable ring assembly consisting of a movable ring (3.1), a radial auxiliary sealing ring (3.2), a movable ring axial auxiliary sealing ring (3.3.3), a static ring sealing ring (3.5), a static ring assembly consisting of a pushing ring (3.6) and an elastic element (7.2.2.2, a part of which consists of the movable ring (3.1.2), and a static ring (2.2.2.2) and a static ring seat (2.2) are connected with a part of the axial gland seat (2.2), the gland (2.2) part comprises gland main part (2.2.1), second axial O shape circle (2.2.2), third axial O shape circle (2.2.3) and skeleton oil blanket (2.2.4), bearing assembly (4) are by sealed fender lid (4.1), bearing (4.2), bearing gland (4.3) and sealed pad (4.4), positioner (5) are by limiting plate (5.1) and screw (5.2) two parts constitution, wherein limiting plate (5.1) are connected on bearing gland (4.3) and gland main part (2.2.1) through screw (5.2) to insert in the spacing groove of axle sleeve assembly (1), axle sleeve transmission (6) are including expansion ring (6.1), driving ring A (6.2), driving ring B (6.3) and bolt (6.4), and wherein driving ring A (6.2) and driving ring B (6.3) pass through (6.4) and press from both sides tight axle sleeve (6.1) on driving table (6.1).
2. A mechanical stirrer seal for a thermal power plant according to claim 1, wherein: the sealing baffle cover (4.1) and the bearing gland (4.3) are respectively provided with a first star-shaped sealing ring (4.1.1) and a second star-shaped sealing ring (4.3.1), and the first star-shaped sealing ring (4.1.1) and the second star-shaped sealing ring (4.3.1) are respectively in sliding fit with two P, Q spraying surfaces on the shaft sleeve device (1).
3. A mechanical stirrer seal for a thermal power plant according to claim 1, wherein: the static ring seat (2.1) is provided with a static ring anti-rotation pin (2.1.4), the root of the static ring anti-rotation pin (2.1.4) is plug welded on the static ring seat (2.1), and the static ring anti-rotation pin (2.1.4) is provided with a second shock absorption protective sleeve (2.1.5).
4. A mechanical stirrer seal for a thermal power plant according to claim 1, wherein: the outer side wall of the gland device (2) is provided with a liquid sealing port B and a liquid sealing port C, and the liquid sealing port B and the liquid sealing port C are communicated with a sealing cavity of the gland device (2).
5. A mechanical stirrer seal for a thermal power plant according to claim 1, wherein: two interfaces E and F are symmetrically arranged on the bearing gland (4.3), an oil filling nozzle is arranged on the interface E, and an oil cup is arranged on the interface F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322976691.6U CN221196079U (en) | 2023-11-04 | 2023-11-04 | Mechanical seal of stirrer of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322976691.6U CN221196079U (en) | 2023-11-04 | 2023-11-04 | Mechanical seal of stirrer of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221196079U true CN221196079U (en) | 2024-06-21 |
Family
ID=91513832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322976691.6U Active CN221196079U (en) | 2023-11-04 | 2023-11-04 | Mechanical seal of stirrer of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221196079U (en) |
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2023
- 2023-11-04 CN CN202322976691.6U patent/CN221196079U/en active Active
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