Water sealing device for condensate water outlet of steam compressor
By designing a water collector and a water-sealing device controlled by a level switch at the condensate drain of the steam compressor, the problem of steam waste in the condensate discharge system is solved, achieving effective condensate discharge and steam sealing, thus ensuring the safe and efficient operation of the compressor.
Patent Information
- Application Number
- CN202520067088.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-13
AI Technical Summary
The existing condensate drainage system of steam compressors cannot effectively separate steam and water, resulting in a waste of steam energy.
A water-sealing device was designed, comprising a water collector, a level switch, a pneumatic valve, a drain pipe, and a drive unit. The level switch controls the opening and closing of the pneumatic valve to ensure that condensate is not completely discharged during drainage, forming a water seal to seal the steam and prevent steam waste.
This achieves effective condensate drainage, avoids the waste of steam energy, and ensures the safe and efficient operation of the compressor.
Smart Images
Figure CN223676573U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to steam equipment technical field, especially a kind of water seal device of steam compressor condensate discharge port. BACKGROUND
[0002] The shaft seal steam system of steam compressor provides sealing steam to the shaft end of compressor, uses steam pressure to seal the shaft end, seals the space between main shaft of compressor and sealing structure, prevents the fluid in the interior of compressor from leaking, and condenses water after steam shaft seal, so it is necessary to discharge condensate water. The current steam compressor shaft seal steam condensate water is connected to drain directly, the existing drain valve cannot separate steam and water, and the discharge of condensate water needs steam pressure to drive, which can take away a large amount of steam energy, causing energy waste. SUMMARY
[0003] The utility model provides a kind of water seal device of steam compressor condensate discharge port, which can overcome the shortcomings of the prior art and avoid steam waste without affecting the drainage of condensate water.
[0004] The utility model discloses a kind of water seal device of steam compressor condensate discharge port, which includes water collector, liquid level switch, pneumatic valve, drain line, driving device, compressor volute and compressor impeller, and driving device drives compressor impeller to rotate in compressor volute.
[0005] The driving device includes motor, driving shaft and sealing structure, the motor drives the driving shaft to rotate, the sealing structure is arranged between the driving shaft and the compressor impeller, a closed space is provided on the outer side of the driving shaft and the sealing structure, the shaft seal steam inlet is communicated with the closed space, the air inlet cavity and the water outlet cavity are provided on the sealing structure, the air inlet cavity is communicated with the closed space, the water outlet cavity is communicated with the drain line, the water collector is provided on the drain line, the water collector is communicated with the pneumatic valve, and the liquid level switch is arranged on the water collector.
[0006] Preferably, the sealing structure is provided with a plurality of sealing portions on the side close to the driving shaft, the sealing portions are connected to the driving shaft, and a pressing cavity is arranged between adjacent sealing portions, one pressing cavity is communicated with the air inlet cavity, and the other pressing cavity is communicated with the water outlet cavity.
[0007] Preferably, the liquid level switch is a magnetic floating ball and a water level sensor arranged in the water collector, and the magnetic floating ball is connected to the water level sensor.
[0008] Preferably, the utility model further includes a rack, the compressor volute and the compressor impeller are arranged on one side of the rack, and the driving device is arranged on the other side of the rack to drive the compressor impeller.
[0009] Preferably, the utility model further includes a controller, the controller receives the signal detected by the liquid level switch, and controls the opening and closing of the pneumatic valve.
[0010] Preferably, the gas seal body is arranged outside the drive shaft and connected with the sealing structure to form the closed space.
[0011] Compared with the prior art, the technical scheme has the beneficial effects that:
[0012] The utility model discloses a closed cavity is equipped between drive shaft and sealing structure, and the closed cavity is equipped with shaft seal steam import, and the sealing structure is equipped with air inlet cavity and water outlet cavity, and the shaft seal steam enters the inside of sealing structure through air inlet cavity, plays the role of shaft seal, and the condensed water is discharged to the water collector in the water outlet cavity, and the water collector is arranged on the water outlet line, and the condensed water is discharged to the water collector, and the liquid level switch is arranged on the water collector, and the liquid level in the water collector is detected, and the pneumatic valve is arranged on the water collector outlet, and the condensed water in the water collector is not completely discharged, and the water seal device is formed to seal the steam from the water outlet line, and the steam for shaft seal is avoided to waste. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the front view of the water seal device of the steam compressor condensate discharge port of the utility model.
[0014] Figure 2 It is the side view of the utility model.
[0015] Figure 3 It is the shaft seal schematic view of the utility model.
[0016] Figure 4 It is Figure 3 The enlarged view of A in the middle.
[0017] 1, water collector 2, liquid level switch 3, pneumatic valve 4, first water outlet line 5, compressor volute 6, compressor impeller 7, rack 8, gas seal body 9, shaft seal steam import 10, air inlet cavity 11, drive shaft 12, sealing structure 1201, sealing part 13, water outlet cavity 14, second water outlet line 15, third water outlet line. DETAILED DESCRIPTION
[0018] Figures 1-4 It is the best embodiment of the utility model, and the following will be combined with the drawings to further explain the utility model. Figures 1-4 The utility model is further explained.
[0019] Refer to Figures 1-4 The water seal device of the steam compressor condensate discharge port includes water collector 1, liquid level switch 2, pneumatic valve 3, water outlet line, rack 7, driving device, compressor volute 5 and compressor impeller 6, and the compressor volute 5 is installed on one side of the rack 7 in cooperation with the compressor impeller 6, and the driving device is arranged on the other side of the rack 7 and connected with the compressor impeller 6.
[0020] The driving device comprises a motor, a driving shaft 11 and a sealing structure 12, the motor drives the driving shaft 11, the sealing structure 12 is arranged between the driving shaft 11 and the compressor impeller 6, the sealing structure 12 is provided with an air inlet cavity 10 and a water outlet cavity 13, a closed space is arranged on the outer side of the sealing structure 12 and the driving shaft 11, the closed space is provided with a shaft seal steam inlet 9, the air inlet cavity 10 is communicated with the closed space, and the shaft seal steam enters the sealing structure 12 through the air inlet cavity 10.
[0021] The sealing structure 12 is provided with a plurality of sealing parts 1201 close to the side of the driving shaft 11, and the sealing parts 1201 are connected with the driving shaft 11, in the embodiment, the sealing parts 1201 are carbon rings, springs are arranged on the sealing structure 12 to press the driving shaft 11, and a pressing cavity is arranged between adjacent sealing parts 1201, one of the pressing cavities is communicated with the air inlet cavity 10, and the other pressing cavity is communicated with the water outlet cavity 13, the shaft seal steam enters the pressing cavity to press the sealing structure 12, and part of the steam is condensed into water and discharged into a drainage pipeline from the water outlet cavity 13, a water collector 1 is arranged on the drainage pipeline, the water collector 1 is communicated with a pneumatic valve 3, and a liquid level switch 2 is arranged on the water collector 1.
[0022] The shaft seal steam system of the steam compressor provides sealing steam to the shaft end of the compressor, is used for sealing the space between the main shaft of the compressor and the sealing structure, prevents the fluid in the compressor from leaking, and also prevents external impurities from entering the compressor, so that the compressor can be safely and efficiently operated.
[0023] The shaft seal steam inlet 9 is communicated with the closed cavity between the shaft seal body 8 and the driving shaft 11, the steam for shaft sealing is input into the closed cavity, and then enters the sealing structure 12 through the air inlet cavity 10, so that the high-pressure steam on the other side of the compressor impeller 6 cannot leak out through the gap between the driving shaft 11 and the sealing structure 12. After part of the steam for shaft sealing is condensed into water, the water flows into the drainage pipeline through the water outlet cavity 13 and then into the water collector 1.
[0024] The condensed water flows out of the steam compressor through the first drainage pipeline 4 and then flows into the water collector 1, the second drainage pipeline 14 is arranged between the water collector 1 and the pneumatic valve 3, in the embodiment, the liquid level switch 2 arranged on the water collector 1 is a magnetic floating ball and a water level sensor arranged in the water collector 1, the magnetic floating ball senses the change of the water level in the water collector 1, transmits a signal to the water level sensor, and the water level sensor transmits the signal to a controller, so as to control the opening and closing of the pneumatic valve 3.
[0025] The low liquid level line and the high liquid level line are arranged in the water collector 1, when the condensate water level in the water collector 1 rises to the high liquid level line, the liquid level switch 2 transmits a signal to the controller, the controller controls the pneumatic valve 3 to open, and the condensate water is discharged from the water collector 1 through the third drain pipeline 15. When the condensate water in the water collector 1 is drained to the low liquid level line, the liquid level switch 2 transmits a signal to the controller, the controller controls the pneumatic valve 3 to close, so that a part of the condensate water is always reserved in the water collector 1, and the condensate water forms a water seal, which seals the shaft seal steam passing through the drain pipe, and prevents waste.
[0026] The working process is as follows: the shaft seal steam enters the sealing structure 12 through the shaft seal steam inlet 9, at this time, the pneumatic valve 3 is in the closed state, the condensate water generated by the steam condensation enters the water collector 1 through the drain pipeline, when the condensate water reaches the high liquid level line, the liquid level switch 2 transmits a signal to the controller, the controller controls the pneumatic valve 3 to open, and the condensate water is discharged from the water collector 1 through the third drain pipeline 15. When the condensate water in the water collector 1 is drained to the low liquid level line, the liquid level switch 2 transmits a signal to the controller, the controller controls the pneumatic valve 3 to close, and the condensate water forms a water seal, so that a part of the condensate water is always reserved in the water collector 1, and the water collector 1 continues to collect the steam condensate water, and the cycle is repeated.
[0027] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to obtain equivalent embodiments. However, any simple modification, equivalent change and modification of the above embodiments without departing from the technical scheme of the present application, and according to the technical essence of the present application, still belong to the protection scope of the present application.
Claims
1. A water seal device for a steam compressor condenser drain, characterized by: It comprises a water collector (1), a liquid level switch (2), a pneumatic valve (3), a drainage pipeline, a driving device, a compressor volute (5) and a compressor impeller (6), the driving device drives the compressor impeller (6) to rotate in the compressor volute (5); The driving device comprises a motor, a driving shaft (11) and a sealing structure (12), the motor drives the driving shaft (11) to rotate, the sealing structure (12) is arranged between the driving shaft (11) and the compressor impeller (6), the driving shaft (11) and the outside of the sealing structure (12) are provided with a closed space, the shaft seal steam inlet (9) is communicated with the closed space, the sealing structure (12) is provided with an air inlet cavity (10) and a water outlet cavity (13), the air inlet cavity (10) is communicated with the closed space, the water outlet cavity (13) is communicated with the drainage pipeline, the water collector (1) is arranged on the drainage pipeline, the water collector (1) is communicated with the pneumatic valve (3), and the liquid level switch (2) is arranged on the water collector (1).
2. A water seal device for a condenser water drain of a vapor compression machine as set forth in claim 1, further comprising: The sealing structure (12) is provided with a plurality of sealing parts (1201) close to one side of the driving shaft (11), the sealing parts (1201) are connected with the driving shaft (11), adjacent sealing parts (1201) are provided with compression cavities, one compression cavity is communicated with the air inlet cavity (10), and the other compression cavity is communicated with the water outlet cavity (13).
3. A water seal device for a condenser water drain of a vapor compression machine as set forth in claim 1, further comprising: The liquid level switch (2) is a magnetic floating ball and a water level sensor arranged in the water collector, and the magnetic floating ball is connected with the water level sensor.
4. A water seal device for a condenser water drain of a vapor compression machine as set forth in claim 1, further comprising: It further comprises a controller, the controller receives signals detected by the liquid level switch (2) and controls the opening and closing of the pneumatic valve (3).
5. A water seal device for a condenser water drain of a vapor compression machine as set forth in claim 1, further comprising: It further comprises a rack (7), the compressor volute (5) and the compressor impeller (6) are arranged on one side of the rack (7), and the driving device is arranged on the other side of the rack (7) to drive the compressor impeller (6).
6. A water seal for a condenser water drain of a vapor compression machine as set forth in claim 1, further comprising: It further comprises a gas seal body (8), the gas seal body (8) is arranged on the outside of the driving shaft (11) and connected with the sealing structure (12) to form the closed space.