CN213981318U - Mechanical sealing device of nuclear power condensate pump - Google Patents
Mechanical sealing device of nuclear power condensate pump Download PDFInfo
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- CN213981318U CN213981318U CN202022268900.8U CN202022268900U CN213981318U CN 213981318 U CN213981318 U CN 213981318U CN 202022268900 U CN202022268900 U CN 202022268900U CN 213981318 U CN213981318 U CN 213981318U
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- gland
- nuclear power
- mechanical seal
- condensate pump
- shaft sleeve
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Abstract
The utility model provides a nuclear power condensate pump mechanical seal device, including setting up the axle sleeve at the off-axial surface, the shoulder of axle sleeve is provided with the spring, the surface of axle sleeve is provided with the swivel assembly, one side that the axle sleeve surface is located rotatory ring assembly is provided with quiet ring, the surface of axle sleeve has cup jointed interior gland, interior gland is located the outside of quiet ring, one side that the axle sleeve surface is located interior gland is installed and is pressed the lid subassembly, be provided with mechanical seal between gland subassembly and the axle sleeve, the equipment board is installed to one side of gland subassembly.
Description
Technical Field
The patent relates to the field of mechanical sealing, in particular to a mechanical sealing device of a nuclear power condensate pump.
Background
The condensate pump is a vertical barrel bag type double-layer shell structure, the primary wheel is in a single-suction or double-suction form, the secondary impeller and the final impeller are commonly used, and the condensate pump is in a single-suction form and consists of a pump barrel, a working part, a water outlet part and a thrust device part.
The condensate pump sucks saturated condensate in a high vacuum state, the suction side of the condensate pump works in the vacuum state, air is easily sucked and cavitation is easily generated, and the operating condition of the condensate pump requires that the cavitation resistance of the pump and the performance of a shaft sealing device are good, so that a nuclear power condensate pump mechanical sealing device is provided at present.
Disclosure of Invention
The purpose of the invention is as follows: the mechanical sealing device for the nuclear power condensate pump is provided to solve the problems in the background technology.
The technical scheme adopted by the invention is as follows: the utility model provides a nuclear power condensate pump mechanical seal device, including setting up the axle sleeve at the off-axial surface, the shoulder of axle sleeve is provided with the spring, the surface of axle sleeve is provided with the swivel assembly, one side that the axle sleeve surface is located rotatory ring assembly is provided with quiet ring, the surface of axle sleeve has cup jointed interior gland, interior gland is located the outside of quiet ring, one side that the axle sleeve surface is located interior gland is installed and is pressed the lid subassembly, be provided with mechanical seal between gland subassembly and the axle sleeve, the equipment board is installed to one side of gland subassembly.
The rotating ring assembly comprises a fixed seat, a moving ring, a fixed pin and a fixed screw, the fixed seat is arranged above the moving ring, the fixed pin is arranged between the fixed seat and the shaft sleeve, and the fixed seat, the shaft sleeve and the fixed pin are connected through the fixed screw.
The static ring is made of pressureless sintered silicon carbide.
And a cooling water interface is arranged on the outer side of the inner gland.
Buffer solution inlet has been seted up to one side of gland subassembly, and the opposite side of gland subassembly has seted up the buffer solution export.
And a static ring anti-rotation pin is arranged between the inner gland and the static ring.
The assembling plate is connected with the gland assembly through a fixing bolt.
The invention has the beneficial effects and outstanding advantages that: the utility model discloses an adopt collection dress formula mechanical seal to seal the pump body, it is very convenient to dismantle and install, the working strength of maintainer has been reduced, the maintenance efficiency has been improved, back sparge water has still been introduced to this mechanical seal, make rotatory ring assembly, quiet ring and spring are in operation under the better operational environment for a long time, service life has effectively been improved, the maintenance cost is reduced, and simultaneously, side through the fixed screw is fixed, even when the fixed screw appears becoming flexible, nevertheless as long as the tip of fixed screw is located the inside of fixed pin, the fixed pin just can not produce the condition that drops, the steady operation of assurance equipment, compare in traditional fixed mode, the security is higher.
Drawings
FIG. 1 is a schematic view of a mechanical seal of a nuclear power condensate pump according to the present invention;
FIG. 2 is a schematic view of the rotating ring assembly;
in the figure: shaft sleeve 1, spring 2, rotating ring assembly 3, inner gland 4, gland assembly 5, stationary ring 6, mechanical seal 7 and assembling plate 8
Detailed Description
The utility model provides a nuclear power condensate pump mechanical seal device, including setting up axle sleeve 1 at the axle surface, the shoulder of axle sleeve 1 is provided with spring 2, the surface of axle sleeve 1 is provided with rotatory ring assembly 3, one side that 1 surface of axle sleeve is located rotatory ring assembly 3 is provided with quiet ring 6, gland 4 in the surface cup joints of axle sleeve 1, gland 4 is located the outside of quiet ring 6 in, gland subassembly 5 is installed to one side that 1 surface of axle sleeve is located gland 4, be provided with mechanical seal 7 between gland subassembly 5 and the axle sleeve 1, equipment board 8 is installed to one side of gland subassembly 5.
The stationary ring 6 is made of pressureless sintered silicon carbide which has the characteristics of smooth surface, high density and high strength and can meet the strict requirement on sealing.
The cooling water interface has been seted up in the outside of interior gland 4, recycles through the pipeline after retrieving the filtration and recycles, the cost is reduced, and the heat that the vice operation of friction produced is taken away simultaneously to the cooling water, guarantees that the bi-polar face can long period normal operating.
Buffer solution import has been seted up to one side of gland subassembly 5, and the buffer solution export has been seted up to the opposite side of gland subassembly 5, has realized the interpolation and the getting rid of buffer solution.
Be provided with quiet ring rotational lock between interior gland 4 and quiet ring 6, avoided the rotation of quiet ring 6, guarantee the normal clear of equipment.
The assembling plate 8 is connected with the gland assembly 5 through a fixing bolt, so that the assembling plate is convenient to mount and dismount, and the maintenance efficiency is improved.
The rotating ring assembly 3 comprises a fixed seat 301, a moving ring 302, a fixed pin 303 and a fixed screw 304, the fixed seat 301 is arranged above the moving ring 302, the fixed pin 303 is arranged between the fixed seat 301 and the shaft sleeve 1, the fixed seat 301, the shaft sleeve 1 and the fixed pin 303 are connected through the fixed screw 304, and the fixed pin 303 in the fixed seat 301 is prevented from loosening and disengaging through further fixing of the fixed screw 304.
The working principle is as follows: when the shaft sleeve 1 drives the rotating ring assembly 3 to rotate, the static ring 5 is constantly attached to the rotating ring assembly 3 under the action of the spring 2 and the fluid pressure, so that the sealing state is achieved, the medium is not leaked, the purpose of preventing leakage is achieved under the action of the mechanical seal 7 by the sealing medium, the pump body is sealed by the integrated mechanical seal, and the disassembly and the installation are very convenient.
Claims (7)
1. The utility model provides a nuclear power condensate pump mechanical seal device which characterized in that: the bearing comprises a shaft sleeve (1) arranged on the outer surface of a shaft, a spring (2) is arranged on the shoulder of the shaft sleeve (1), a rotating ring assembly (3) is arranged on the outer surface of the shaft sleeve (1), a stationary ring (6) is arranged on one side, located on the rotating ring assembly (3), of the outer surface of the shaft sleeve (1), an inner gland (4) is sleeved on the outer surface of the shaft sleeve (1), the inner gland (4) is located on the outer side of the stationary ring (6), a gland assembly (5) is installed on one side, located on the inner gland (4), of the outer surface of the shaft sleeve (1), a mechanical seal (7) is arranged between the gland assembly (5) and the shaft sleeve (1), and an assembly plate (8) is installed on one side of the gland assembly (5).
2. The mechanical seal device of a nuclear power condensate pump according to claim 1, characterized in that: the rotating ring assembly (3) comprises a fixed seat (301), a moving ring (302), a fixed pin (303) and a fixed screw (304), the fixed seat (301) is arranged above the moving ring (302), the fixed pin (303) is arranged between the fixed seat (301) and the shaft sleeve (1), and the fixed seat (301), the shaft sleeve (1) and the fixed pin (303) are connected through the fixed screw (304).
3. The mechanical seal device of a nuclear power condensate pump according to claim 1, characterized in that: the static ring (6) is made of pressureless sintered silicon carbide.
4. The mechanical seal device of a nuclear power condensate pump according to claim 1, characterized in that: and a cooling water interface is arranged on the outer side of the inner gland (4).
5. The mechanical seal device of a nuclear power condensate pump according to claim 1, characterized in that: a buffer solution inlet is formed in one side of the gland component (5), and a buffer solution outlet is formed in the other side of the gland component (5).
6. The mechanical seal device of a nuclear power condensate pump according to claim 1, characterized in that: a static ring rotation-proof pin is arranged between the inner gland (4) and the static ring (6).
7. The mechanical seal device of a nuclear power condensate pump according to claim 1, characterized in that: the assembling plate (8) is connected with the gland assembly (5) through a fixing bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022268900.8U CN213981318U (en) | 2020-10-13 | 2020-10-13 | Mechanical sealing device of nuclear power condensate pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022268900.8U CN213981318U (en) | 2020-10-13 | 2020-10-13 | Mechanical sealing device of nuclear power condensate pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213981318U true CN213981318U (en) | 2021-08-17 |
Family
ID=77256033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022268900.8U Active CN213981318U (en) | 2020-10-13 | 2020-10-13 | Mechanical sealing device of nuclear power condensate pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213981318U (en) |
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2020
- 2020-10-13 CN CN202022268900.8U patent/CN213981318U/en active Active
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