CN-224214429-U - Labyrinth seal water system at shaft end of steam pump

CN224214429UCN 224214429 UCN224214429 UCN 224214429UCN-224214429-U

Abstract

The utility model discloses a labyrinth seal water system at the shaft end of a steam pump, which comprises a booster pump station, an integrated water station, a water return tank and a U-shaped water seal cylinder, wherein the water inlet end of the booster pump station is connected with the female pipe end of a condensate pump, the integrated water station comprises a filtering structure, the water inlet end of the filtering structure is connected with the water outlet end of the booster pump station, the filtering structure is connected with the labyrinth seal water inlet end, the water inlet end of the water return tank is connected with the labyrinth seal water outlet end, the water inlet end of the U-shaped water seal cylinder is connected with the water outlet end of the water return tank, the water outlet end of the water return tank is connected with a condenser, a connecting pipeline is arranged at the water outlet end of the labyrinth seal, and the connecting pipeline is connected with a front-mounted pump of the steam pump. According to the utility model, the sealing performance of the labyrinth seal is improved by arranging the sealing water system, and the water entering the labyrinth seal is filtered by arranging the filtering structure, so that the possibility of damage of the labyrinth seal is reduced. Sealing water is led out from the female pipe end of the condenser outlet and then enters the condenser, and the trouble of independently setting a circulating water source is reduced by taking original equipment as a water source.

Inventors

ZHANG ZHIRU
ZHANG MINGLI
CAO FUQING
WANG XIANGYANG
WANG YONGZHI
CHEN QIAOWEI
YANG XUHUI
MA CHANGLIANG
WANG KUIXING
HE XIAOFENG
Di Jiapeng
FU XIANG
Jin Gangjun
LIU JIANGTAO

Assignees

大唐三门峡电力有限责任公司

Dates

Publication Date: 20260508
Application Date: 20250626

Claims (8)

1. A steam pump shaft end labyrinth seal water system, comprising: the booster pump station (1), booster pump station (1) includes directly links water route (11), directly link water route (11) parallelly connected have booster water route (12), booster water route (12) are provided with booster pump (13), booster pump (13) entry end is provided with the stop valve, booster pump station (1) water inlet end connects congeal pump female pipe end; The integrated water station (2), the integrated water station (2) comprises a filtering structure (21), the water inlet end of the filtering structure (21) is connected with the water outlet end of the booster pump station (1), the outlet end of the filtering structure (21) is connected with a regulating valve, and the water outlet end of the regulating valve is connected with the labyrinth seal water inlet end of the shaft end of the air pump; The water return tank (3), the water inlet end of the water return tank (3) is connected with the labyrinth seal water outlet end of the steam pump shaft end, a first exhaust port (31) is arranged at the upper end of the water return tank (3), a water inlet pipeline of the water return tank (3) is provided with a stop valve, and the water return tank (3) is provided with a water level gauge; The water inlet end of the U-shaped water seal cylinder (4) is connected with the water outlet end of the water return tank (3), the water outlet end is connected with a condenser, the U-shaped water seal cylinder (4) is provided with a second air outlet (41), the water inlet pipeline of the U-shaped water seal cylinder (4) is provided with a stop valve and a regulating valve, and the water outlet pipeline of the U-shaped water seal cylinder (4) is provided with a stop valve; the labyrinth seal water outlet end of the shaft end of the steam pump is provided with a connecting pipeline (5), the connecting pipeline (5) is connected to the front-mounted pump of the steam pump, and the connecting pipeline (5) is provided with a stop valve.
2. The labyrinth seal water system for the shaft end of a steam pump according to claim 1, wherein the pressurizing water channel (12) and the filtering structure (21) are both connected in parallel, a check valve and an electromagnetic valve are arranged at the water outlet end of the pressurizing water channel (12), the electromagnetic valve is arranged at the water inlet end of the filtering structure (21), and the check valve is arranged at the water outlet end of the filtering structure (21).
3. The labyrinth seal water system for the shaft end of a steam pump according to claim 1, wherein the filtering structure (21) is connected in parallel with a water pressure gauge, and the water pressure gauge is arranged between the filtering structure (21) and the regulating valve.
4. The labyrinth seal water system of claim 1, wherein the water outlet end of the labyrinth seal is provided with a water pressure gauge.
5. A labyrinth seal water system at the end of a steam pump shaft as set forth in claim 1, wherein the inlet end of the labyrinth seal at the end of the steam pump shaft is provided with a check valve.
6. The labyrinth seal water system for the shaft end of the steam pump according to claim 1, wherein the return water tank (3) and the water inlet pipe of the return water tank (3) are both provided with an overflow pipe (32), and the overflow pipe (32) at the water inlet pipe position of the return water tank (3) is provided with a stop valve.
7. The labyrinth seal water system for the shaft end of a steam pump according to claim 1, wherein the water inlet end of the U-shaped water seal cylinder (4) is provided with a water supplementing pipe (42), and the water supplementing pipe (42) is provided with a stop valve.
8. A labyrinth seal water system at the end of a steam pump shaft as defined in claim 1, wherein said second exhaust port (41) is provided with a shut-off valve.

Description

Labyrinth seal water system at shaft end of steam pump Technical Field The utility model belongs to the technical field of sealing water systems, and relates to a labyrinth sealing water system at the shaft end of a steam pump. Background The steam feed pump is a key device of the thermal generator set, and the reliability of the shaft end seal directly influences the running safety of the set. At present, mechanical sealing is mainly adopted, so that the tightness of the steam-driven water supply pump is improved, the trouble that a sealing water filter screen of the mechanical sealing is frequently blocked and needs manual cleaning is reduced, and a labyrinth seal is used for the steam-driven water supply pump, but a sealing water system matched with the labyrinth seal at the position of the steam-driven water supply pump is lacking at present. Disclosure of utility model Aiming at the problems, the utility model provides a labyrinth seal water system at the shaft end of a steam pump, which well solves the problems in the prior art. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a steam pump shaft end labyrinth seal water system comprising: The booster pump station comprises a direct-connected waterway, the direct-connected waterway is connected in parallel with a booster pump, the booster pump is provided with a booster pump, the inlet end of the booster pump is provided with a stop valve, and the water inlet end of the booster pump is connected with the female end of the pump outlet; The integrated water station comprises a filtering structure, the water inlet end of the filtering structure is connected with the water outlet end of the booster pump station, the outlet end of the filtering structure is connected with a regulating valve, and the water outlet end of the regulating valve is connected with the labyrinth seal water inlet end of the shaft end of the steam pump; The water return tank is connected with a labyrinth seal water outlet end of the shaft end of the steam pump, a first exhaust port is arranged at the upper end of the water return tank, a stop valve is arranged on a water inlet pipeline of the water return tank, and a water level gauge is arranged on the water return tank; The water inlet end of the U-shaped water seal cylinder is connected with the water outlet end of the water return tank, the water outlet end of the U-shaped water seal cylinder is connected with the condenser, the U-shaped water seal cylinder is provided with a second air outlet, the water inlet pipeline of the U-shaped water seal cylinder is provided with a stop valve and the regulating valve, and the water outlet pipeline of the U-shaped water seal cylinder is provided with a stop valve; The labyrinth seal water outlet end of the shaft end of the steam pump is provided with a connecting pipeline which is connected with the front-mounted pump of the steam pump, and the connecting pipeline is provided with a stop valve. Optionally, the pressure boost water route is provided with two ways with filtering structure all parallelly connected, pressure boost water route goes out the water end and is provided with check valve and solenoid valve, filtering structure advances the water end and is provided with the solenoid valve, filtering structure goes out the water end and is provided with the check valve. Optionally, the filtering structure is connected in parallel with a water pressure gauge, and the water pressure gauge is arranged between the filtering structure and the regulating valve. Optionally, a water pressure gauge is arranged at the water outlet end of the labyrinth seal at the shaft end of the steam pump. Optionally, a check valve is arranged at the labyrinth seal water inlet end of the shaft end of the steam pump. Optionally, the return water tank and the return water tank water inlet pipe are both provided with overflow pipes, and the overflow pipe at the return water tank water inlet pipe position is provided with a stop valve. Optionally, the water inlet end of the U-shaped water seal cylinder is provided with a water supplementing pipe, and the water supplementing pipe is provided with a stop valve. Optionally, the second exhaust port is provided with a shut-off valve. Compared with the prior art, the labyrinth seal has the beneficial effects that the sealing performance of the labyrinth seal is improved by arranging the sealing water system, and the possibility of damage to the labyrinth seal is reduced by arranging the filtering structure to filter water entering the labyrinth seal. Sealing water is led out from the female pipe end of the condenser outlet and then enters the condenser, and the trouble of independently setting a circulating water source is reduced by taking original equipment as a water source. Drawings Fig. 1 is a schematic overall structure of an embodiment of the present utility model. The water pump comprises the following comp