CN220082119U - Door shaft sealing structure for thermal power plant - Google Patents
Door shaft sealing structure for thermal power plant Download PDFInfo
- Publication number
- CN220082119U CN220082119U CN202321483056.8U CN202321483056U CN220082119U CN 220082119 U CN220082119 U CN 220082119U CN 202321483056 U CN202321483056 U CN 202321483056U CN 220082119 U CN220082119 U CN 220082119U
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- CN
- China
- Prior art keywords
- sealing
- main shaft
- sealing ring
- pressing plate
- thermal power
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- 238000007789 sealing Methods 0.000 title claims abstract description 79
- 210000004907 gland Anatomy 0.000 claims abstract description 20
- 238000012856 packing Methods 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims 5
- 230000000694 effects Effects 0.000 abstract description 7
- 238000002955 isolation Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The door shaft sealing structure for the thermal power plant comprises a main shaft, wherein a shaft seal is arranged outside the main shaft, packing is filled between the main shaft and the shaft seal, a gland is arranged at the rear of the packing, a pressing plate is arranged at the rear of the gland, two sealing rings are arranged between the gland and the pressing plate, the pressing plate and the two sealing rings are sleeved on the outer side of the main shaft, a sealing ring seat is arranged in the radial direction of the sealing ring, and the sealing ring seat tightly presses the sealing ring on the outer surface of the main shaft; the screw rod is penetrated in the through hole of the pressing plate, the rear end part of the screw rod is a screw cap, and the front end of the screw rod sequentially penetrates through the through hole of the pressing cover, the through hole of the sealing gasket and the through hole on the flange plate of the shaft seal. Compared with the prior art, the sealing device has the technical effects that the screw and the two nuts are arranged, if the sealing ring is worn, the wearing capacity of the wearing of the sealing ring can be counteracted by fastening the nuts, and the good sealing effect is not affected.
Description
Technical Field
The utility model relates to a door shaft sealing structure for a thermal power plant, in particular to a door shaft sealing structure for a plugboard door, an isolation door, a baffle door and the like of a wind and smoke system for thermal power plant.
Background
At present, after the sealing of door shafts of a plugboard door, an isolation door, a baffle door and the like of a wind and smoke system is leaked, the problem of the responsibility and the technical level of maintenance personnel still causes a slight leakage phenomenon after the door shaft sealing is replaced, and leakage mediums can form different degrees of blowing damage to the door shaft after long time removal, so that the maintenance of the door shaft sealing is not helpful.
In order to increase the sealing performance, the patent document with the publication number of CN205260832U is provided with a sealing chuck and a conical sealing ring at the rear part of the pressing plate, so that the sealing performance is improved.
However, the sealing effect is deteriorated after the tapered seal ring is worn.
Disclosure of Invention
The utility model aims to solve the technical problems: how to design a door spindle seal structure for thermal power factory, can also have good sealed effect after the sealing washer wearing and tearing.
The technical scheme of the utility model is as follows:
the door shaft sealing structure for the thermal power plant comprises a main shaft, wherein a shaft seal is arranged outside the main shaft, packing is filled between the main shaft and the shaft seal, a gland is arranged at the rear of the packing, a pressing plate is arranged at the rear of the gland, two sealing rings are arranged between the gland and the pressing plate, the pressing plate and the two sealing rings are sleeved on the outer side of the main shaft, a sealing ring seat is arranged in the radial direction of the sealing ring, and the sealing ring seat tightly presses the sealing ring on the outer surface of the main shaft; the screw rod is worn to establish in the through-hole of clamp plate, and the rear end of screw rod is the nut, and the front end of screw rod is worn in proper order to cross the through-hole of gland, the through-hole of sealing pad, the through-hole on the ring flange of bearing seal, screw thread cooperation nut A and nut B on the screw rod, and nut A is located the front side of the ring flange of bearing seal, and nut B is located between gland and the clamp plate.
The sealing ring seat comprises two symmetrical semicircular rings, the cross section of each semicircular ring is T-shaped, a fastening part at the outer side and an extending part at the inner side are provided with gaps, the extending parts are positioned in the gaps, the end parts of the fastening parts extend to the radial direction of the sealing ring seat to form fixing parts, and the fixing parts of the two semicircular rings are fixedly connected together through bolts.
A gasket is arranged between the gland and the sealing ring.
The screw, the nut A and the nut B are at least provided with three groups.
A sealing gasket is arranged between the gland and the flange of the shaft seal.
Compared with the prior art, the sealing device has the technical effects that the screw and the two nuts are arranged, if the sealing ring is worn, the wearing capacity of the wearing of the sealing ring can be counteracted by fastening the nuts, and the good sealing effect is not affected.
Drawings
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is a right-side view of the seal ring seat in fig. 1.
Detailed Description
The utility model will be described in detail below with reference to the drawings and detailed description thereof.
The utility model is mainly used for improving the existing door shaft sealing structure. Wherein the main shaft 10, the shaft seal 11, the packing 12 and the gland 21 are components of the existing door shaft sealing structure.
Referring to fig. 1-2, a door shaft sealing structure for a thermal power plant comprises a main shaft 10, a shaft seal 11 is arranged outside the main shaft 10, packing 12 is filled between the main shaft 10 and the shaft seal 11, and a gland 21 is arranged behind the packing 12 (on the right side in fig. 1). This is prior art.
The pressing plate 22 is arranged at the rear part (right side in fig. 1) of the pressing cover 21, two sealing rings 23 are arranged between the pressing cover 21 and the pressing plate 22, the pressing plate 22 and the two sealing rings 23 are sleeved on the outer side of the main shaft 10, a sealing ring seat 24 is arranged in the radial direction of the sealing rings 23, and the sealing ring seat 24 presses the sealing rings 23 on the outer surface of the main shaft 10.
The screw 26 is inserted into the through hole of the pressing plate 22, the rear end (right side in fig. 1) of the screw 26 is a screw cap 261, the front end of the screw 26 sequentially passes through the through hole of the pressing cover 21, the through hole of the sealing gasket 13 and the through hole on the flange of the shaft seal 11, the screw 26 is in threaded fit with the nut a262 and the nut B263, the nut a262 is positioned on the front side (left side in fig. 1) of the flange of the shaft seal 11, and the nut B263 is positioned between the pressing cover 21 and the pressing plate 22.
In order to facilitate installation and compression, as shown in fig. 2, the seal ring seat 24 includes two symmetrical semicircular rings 240, the cross section of the semicircular rings 240 is T-shaped, the seal ring seat includes an outer fastening portion 241 and an inner extending portion 242, a gap 231 is formed between the two seal rings 23, the extending portion 242 is located in the gap 231, an end portion of the fastening portion 241 extends to a radial direction of the seal ring seat 24 to form a fixing portion 243, and the fixing portions 243 of the two semicircular rings 240 are fixedly connected together through bolts 244.
For convenient compression, as shown in fig. 1, a gasket 25 is arranged between the gland 21 and the seal ring 23.
For the purpose of firmness, the screw 26 is provided with at least three groups of nuts A262 and B263.
For sealing convenience, a gasket 13 is provided between the gland 21 and the flange of the shaft seal 11.
The working principle is as follows:
in the reconstruction process, S1, the shaft seal 11 and the packing 12 are disassembled, the original packing 12 is removed, a new packing 12 is refilled, and after the filling is completed, the gland 21 and the sealing gasket 13 are placed.
S2, the two sealing rings 23, the gasket 25 and the pressing plate 22 are sleeved on the outer side of the main shaft 10, and then the screw 26, the nut A262 and the nut B263 are mounted, so that the screw is not screwed temporarily.
And S3, installing the sealing ring seat 24.
S4, tightening the nut A262 to press the sealing gasket 13, the sealing ring 23 and the gasket 25 in the axial direction of the main shaft 10.
And S5, the nut B263 is screwed so as to be in contact with the gland 21, so that the shaft seal 11 and the gland 21 are kept fastened, and accidents such as loosening and the like are prevented from happening at the rear end of the screw 26.
The utility model has the characteristics that:
s1, a sealing element is arranged for protection in the axial direction of the main shaft 10 and in the radial direction of the main shaft, so that the sealing effect is good.
S2, if the sealing ring 23 is worn after being used for a long time, the sealing performance of the sealing ring 23 can be continuously maintained through the fastening nut A262.
S3, under the condition that equipment is not stopped, sealing leakage of door shafts of a plugboard door, an isolation door, a baffle door and the like of the wind and smoke system can be rapidly treated.
See the prior art for further content.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the utility model.
Claims (5)
1. The utility model provides a door-hinge seal structure for thermal power factory, includes main shaft (10), and main shaft (10) are equipped with bearing seal (11) outward, pack packing (12) between main shaft (10) and bearing seal (11), and the rear of packing (12) is equipped with gland (21), its characterized in that:
a pressing plate (22) is arranged at the rear of the pressing cover (21), two sealing rings (23) are arranged between the pressing cover (21) and the pressing plate (22), the pressing plate (22) and the two sealing rings (23) are sleeved on the outer side of the main shaft (10), a sealing ring seat (24) is arranged in the radial direction of the sealing rings (23), and the sealing ring seat (24) tightly presses the sealing rings (23) on the outer surface of the main shaft (10);
a screw rod (26) is arranged in a penetrating hole of the pressing plate (22) in a penetrating mode, a screw cap (261) is arranged at the rear end portion of the screw rod (26), the front end of the screw rod (26) sequentially penetrates through the penetrating hole of the pressing cover (21), the penetrating hole of the sealing gasket (13) and the penetrating hole in the flange plate of the shaft seal (11), a nut A (262) and a nut B (263) are matched on the screw rod (26) in a threaded mode, the nut A (262) is located on the front side of the flange plate of the shaft seal (11), and the nut B (263) is located between the pressing cover (21) and the pressing plate (22).
2. The door spindle sealing structure for a thermal power plant according to claim 1, wherein: the sealing ring seat (24) comprises two symmetrical semicircular rings (240), the cross section of each semicircular ring (240) is T-shaped, each semicircular ring comprises an outer fastening part (241) and an inner extending part (242), a gap (231) is reserved between the two sealing rings (23), each extending part (242) is located in each gap (231), the end parts of the fastening parts (241) extend to the radial direction of the sealing ring seat (24) to form fixing parts (243), and the fixing parts (243) of the two semicircular rings (240) are fixedly connected together through bolts (244).
3. The door spindle sealing structure for a thermal power plant according to claim 2, wherein: a gasket (25) is arranged between the gland (21) and the sealing ring (23).
4. A door spindle sealing structure for a thermal power plant as set forth in claim 3, wherein: at least three groups of screw rods (26), nuts A (262) and nuts B (263) are arranged.
5. The door spindle sealing structure for a thermal power plant according to claim 4, wherein: a sealing gasket (13) is arranged between the gland (21) and the flange of the shaft seal (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321483056.8U CN220082119U (en) | 2023-06-12 | 2023-06-12 | Door shaft sealing structure for thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321483056.8U CN220082119U (en) | 2023-06-12 | 2023-06-12 | Door shaft sealing structure for thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220082119U true CN220082119U (en) | 2023-11-24 |
Family
ID=88817881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321483056.8U Active CN220082119U (en) | 2023-06-12 | 2023-06-12 | Door shaft sealing structure for thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220082119U (en) |
-
2023
- 2023-06-12 CN CN202321483056.8U patent/CN220082119U/en active Active
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| GR01 | Patent grant |