CN217107533U - Water system for lubricating axial flow pump - Google Patents
Water system for lubricating axial flow pump Download PDFInfo
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- CN217107533U CN217107533U CN202221086694.1U CN202221086694U CN217107533U CN 217107533 U CN217107533 U CN 217107533U CN 202221086694 U CN202221086694 U CN 202221086694U CN 217107533 U CN217107533 U CN 217107533U
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Abstract
An axial-flow pump lubrication water system. Relates to the field of water conservancy pumps. The axial flow pump comprises a pump body, a vertical pump shaft is arranged in the pump body, and a water guide bearing is arranged at the bottom of the pump shaft; the water system comprises a deep well pump room, a water collecting tank, a water supply main pipe, a water supply pump, a lubricating water main pipe and a branch pipe; the deep well pump in the deep well pump room is used for pumping well water to a water collecting tank, one end of the water supply main pipe is connected with the water collecting tank, the other end of the water supply main pipe is connected with the water supply pump, the water supply pump is connected with the lubricating water main pipe, one end of the branch pipe is communicated with the lubricating water main pipe, and the other end of the branch pipe faces the water guide bearing; and an automatic exhaust valve is arranged on the water supply main pipe. The utility model discloses an it is lubricated to introduce the clear water, has improved the stability and the reliability of unit operation.
Description
Technical Field
The utility model relates to a water conservancy pump field especially relates to an axial-flow pump lubrication water system.
Background
The third pumping station of the river (called three stations of river city for short) and other three pumping stations and related supporting projects together form a water conservancy project of the river city, which is located at the intersection of the Jinghang Dayu canal, the Xintong Yangyuan canal and the Huaihe river entering the river tail to ensure that the river is a wonderful rice river and has the comprehensive functions of irrigation, drainage, flood discharge, navigation, power generation, ecological environment improvement and the like.
The three stations of the Jiangdu adopt a post-dam workshop, the station body consists of a main workshop, an auxiliary workshop and a highway bridge, and the main workshop is respectively a bottom plate layer, a water inlet flow channel, a water pump layer, an overhaul layer, a motor layer and a station house from bottom to top.
After the three stations in Jiangdu are updated and transformed, a 2000ZLQ 13.5-8 type hydraulic fully-regulated vertical axial-flow pump is adopted as a water pump, the diameter of an impeller of the water pump is 2000mm, the designed lift is 7.8m, and the single-machine flow is 13.5m 3 The speed is 214.3r/min per second, and the total installed capacity is 16000kW when the synchronous motor is matched with a TL1600-28/2600 type. The power generation function is kept, and the frequency conversion generator set is matched: a4000 kW generator and a 4300kW half-speed motor can generate 3000kW when the water head is 4 m.
At present, a direct river water supply mode is adopted for cooling a main machine and lubricating a water guide bearing of a main water pump, however, the tile surface of the water guide bearing of the main water pump is made of polyurethane, when the pumped river water is directly utilized, due to the fact that the sand content in the river water is large, sundries are large, the abrasion of the bearing and a shaft neck is serious, and the follow-up maintenance time and cost are increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to above problem, provide a convenient processing improves lubricated reliability's lubricated water system of axial-flow pump.
The technical scheme of the utility model is that: the axial flow pump comprises a pump body, a vertical pump shaft is arranged in the pump body, and a water guide bearing is arranged at the bottom of the pump shaft;
the water system comprises a deep well pump room, a water collecting tank, a water supply main pipe, a water supply pump, a lubricating water main pipe and a branch pipe;
the deep well pump in the deep well pump room is used for pumping well water to the collecting tank, one end of the water supply main pipe is connected with the collecting tank, the other end of the water supply main pipe is connected with the water supply pump, the water supply pump is connected with the lubricating water main pipe,
one end of the branch pipe is communicated with the lubricating water main pipe, and the other end of the branch pipe faces the water guide bearing;
and an automatic exhaust valve is arranged on the water supply main pipe.
Also comprises a three-way valve and a bypass pipeline,
the two ends of the three-way valve are respectively connected with a water supply main pipe and an automatic exhaust valve, the three-way valve is externally connected with a bypass pipeline, and the bypass pipeline is provided with an electromagnetic valve;
the pipe diameter of the bypass pipeline is larger than the caliber of the automatic exhaust valve;
and a pressure gauge is arranged at the outlet of the water supply pump and connected with the electromagnetic valve.
The pressure gauge is an electric contact pressure gauge.
The pipe diameter of the pipeline between the deep well pump room and the water collecting tank and the pipe diameter of the water supply main pipe are DN150, the pipe diameter of the lubricating water main pipe is DN100, and the pipe diameter of the branch pipe is DN 25.
The branch pipe comprises at least two.
The utility model discloses at work, cause the lubricated water of unit water supply guide bearing through the clear water in the deep well. The deep well pump pumps well water to the collecting tank by utilizing the collecting tank between the deep well pump room and the unit, and the water in the collecting tank passes through the main water supply pipe, the water supply pump, the main lubricating water pipe and the branch pipe and is controlled by the on-site gate valve to ensure the stable supply of the lubricating water.
The automatic exhaust valve is arranged on the water supply main pipe, so that air in the water supply main pipe can be conveniently and timely discharged, and the phenomenon of idling caused by excessive air accumulation at the inlet of the water supply pump is prevented.
The utility model discloses an it is lubricated to introduce the clear water, has improved the stability and the reliability of unit operation.
Drawings
Figure 1 is a schematic structural view of the present invention,
FIG. 2 is a partial schematic view of FIG. 1;
in the figure, 1 is a pump body, 2 is a pump shaft, 3 is a water guide bearing, 4 is a deep well pump, 5 is a water collecting tank, 6 is a water supply main pipe, 7 is a water supply pump, 8 is a lubricating water main pipe, 9 is a branch pipe, 10 is an automatic exhaust valve, 11 is a three-way valve, 12 is a bypass pipeline, 13 is an electromagnetic valve, 14 is a pressure gauge, and 15 is a gate valve.
Detailed Description
As shown in fig. 1-2, the axial flow pump of the present invention comprises a pump body 1, a vertical pump shaft 2 is arranged in the pump body, and a water guide bearing 3 is arranged at the bottom of the pump shaft;
the water system comprises a deep well pump room, a water collecting tank 5, a water supply main pipe 6, a water supply pump 7, a lubricating water main pipe 8 and a branch pipe 9;
the deep well pump 4 in the deep well pump room is used for pumping well water to the collecting tank 5, one end of the water supply main pipe 6 is connected with the collecting tank 5, the other end is connected with the water supply pump 7, the water supply pump is connected with the lubricating water main pipe 8,
one end of the branch pipe 9 is communicated with the lubricating water main pipe 8, and the other end of the branch pipe faces the water guide bearing 3;
an automatic exhaust valve 10 is arranged on the water supply main pipe 6.
The utility model discloses at work, cause the lubricated water of unit water supply guide bearing through the clear water in the deep well. The deep well pump is used for pumping well water to the collecting tank between the deep well pump room and the unit, and the water in the collecting tank passes through the water supply main pipe, the water supply pump, the lubricating water main pipe and the branch pipe and is controlled by the field gate valve 15, so that the stable supply of the lubricating water is ensured.
The automatic exhaust valve is arranged on the water supply main pipe, so that air in the water supply main pipe can be conveniently and timely discharged, and the phenomenon of idling caused by excessive air accumulation at the inlet of the water supply pump is prevented.
Also included are a three-way valve 11 and a bypass line 12,
the two ends of the three-way valve 11 are respectively connected with the water supply main pipe 6 and the automatic exhaust valve 10, the three-way valve is externally connected with a bypass pipeline 12, and the bypass pipeline is provided with an electromagnetic valve 13;
the pipe diameter of the bypass pipeline 12 is larger than the caliber of the automatic exhaust valve 10;
and a pressure gauge 14 is arranged at the outlet of the water supply pump and is connected with an electromagnetic valve.
The pressure gauge 14 is an electric contact pressure gauge.
By providing the bypass pipe, the opening or closing of the bypass pipe is controlled by the outlet pressure of the water supply pump. When the pressure of the electric contact pressure gauge is lower than 0.05MP, the electromagnetic valve is automatically opened to exhaust, a large amount of gas is discharged from the bypass pipeline, water flow enters the water supply pump, the value of the electric contact pressure gauge at the outlet of the water supply pump gradually rises, when the pressure of the electric contact pressure gauge gradually rises to 0.1MP, the electromagnetic valve is closed, and the residual gas is automatically discharged by the automatic exhaust valve.
Like this, when water system normal operating, when having a small amount of entrained gas in aqueous, automatic exhaust valve can be automatic in time discharge, when having a large amount of gases in aqueous, also can discharge gas rapidly, guarantees the water-service pump steady operation.
The pipe diameter of the pipeline from the deep well pump room to the water collecting tank and the pipe diameter of the water supply main pipe 6 are DN150, the pipe diameter of the lubricating water main pipe 8 is DN100, and the pipe diameter of the branch pipe 9 is DN 25.
Different pipe diameters are arranged, and the reliability of water supply is guaranteed.
The branch pipes 9 comprise at least two. Therefore, the axial flow pumps corresponding to different units can work conveniently.
In application, the deep-well pump is arranged on site, so that the deep-well pump can be fully utilized. The pipe length from the deep well pump to the sump is about 50m and the pipe length from the sump to the feed pump is about 100 m.
Like this, among the long pipeline water supply system, if have a large amount of air to get into pipe-line system, discharge in untimely time, harm to the system is very big, can cause pressure pulsation in the pipeline big on the one hand, influence system stability, and on the other hand, a large amount of air can cause the working pump idle running phenomenon to appear, and the long-time empty transport line can cause the pump to seal burning out, and it is big to change sealed work load, and influences the continuity of system operation.
The utility model discloses increase air outlet to the pipeline diameter of solenoid valve pipeline, recycle reducing pipe connection automatic exhaust valve, realize that large-traffic exhaust effect can be better, faster.
The disclosure of the present application also includes the following points:
(1) the drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;
(2) in case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;
the above embodiments are only embodiments disclosed in the present disclosure, but the scope of the disclosure is not limited thereto, and the scope of the disclosure should be determined by the scope of the claims.
Claims (5)
1. The axial flow pump lubrication water system comprises a pump body, wherein a vertical pump shaft is arranged in the pump body, and a water guide bearing is arranged at the bottom of the pump shaft;
the system is characterized in that the water system comprises a deep well pump room, a water collecting tank, a water supply main pipe, a water supply pump, a lubricating water main pipe and a branch pipe;
the deep well pump in the deep well pump room is used for pumping well water to the collecting tank, one end of the water supply main pipe is connected with the collecting tank, the other end of the water supply main pipe is connected with the water supply pump, the water supply pump is connected with the lubricating water main pipe,
one end of the branch pipe is communicated with the lubricating water main pipe, and the other end of the branch pipe faces the water guide bearing;
and an automatic exhaust valve is arranged on the water supply main pipe.
2. The axial flow pump lubricating water system of claim 1, further comprising a three-way valve and a bypass conduit,
the two ends of the three-way valve are respectively connected with a water supply main pipe and an automatic exhaust valve, the three-way valve is externally connected with a bypass pipeline, and the bypass pipeline is provided with an electromagnetic valve;
the pipe diameter of the bypass pipeline is larger than the caliber of the automatic exhaust valve;
and a pressure gauge is arranged at the outlet of the water supply pump and connected with the electromagnetic valve.
3. The axial flow pump lubrication water system according to claim 2, wherein said pressure gauge is an electro-contact pressure gauge.
4. The axial-flow pump lubricating water system according to claim 1, wherein the pipe diameters of the pipeline from the deep well pump room to the water collecting tank and the water supply main pipe are DN150, the pipe diameter of the lubricating water main pipe is DN100, and the pipe diameters of the branch pipes are DN 25.
5. The axial flow pump lubricating water system of claim 1, wherein the manifold comprises at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221086694.1U CN217107533U (en) | 2022-05-09 | 2022-05-09 | Water system for lubricating axial flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221086694.1U CN217107533U (en) | 2022-05-09 | 2022-05-09 | Water system for lubricating axial flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217107533U true CN217107533U (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221086694.1U Active CN217107533U (en) | 2022-05-09 | 2022-05-09 | Water system for lubricating axial flow pump |
Country Status (1)
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| CN (1) | CN217107533U (en) |
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2022
- 2022-05-09 CN CN202221086694.1U patent/CN217107533U/en active Active
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