CN213775882U - Oil pump pipeline structure of oil return tank of hydraulic unit of hydropower station - Google Patents
Oil pump pipeline structure of oil return tank of hydraulic unit of hydropower station Download PDFInfo
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- CN213775882U CN213775882U CN202022770245.6U CN202022770245U CN213775882U CN 213775882 U CN213775882 U CN 213775882U CN 202022770245 U CN202022770245 U CN 202022770245U CN 213775882 U CN213775882 U CN 213775882U
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Abstract
The utility model discloses a power station unit oil pressure device returns oil tank oil pump pipeline structure, including overhead tank, oil tank and locate the big oil pump at oil tank top, big pump connector, valves and the filter that big oil pump export department connected gradually still include first manual ball valve and high-pressure hose, the export of filter is connected in the one end of high-pressure hose, the other end of high-pressure hose is connected in the one end of first manual ball valve, the other end of first manual ball valve is connected on main oil pipe, be equipped with first check valve on the main oil pipe with the link of overhead tank; through the technical scheme, the problem of oil leakage at the joint of the oil pipeline of the oil pressure device is solved.
Description
Technical Field
The utility model relates to a water conservancy water and electricity field especially relates to a power station unit oil pressure device returns oil tank oil pump pipeline structure.
Background
The hydraulic device has the function of providing a pressure oil source for various equipment, is widely applied to a speed regulating system and a unit control system of a hydraulic turbine unit at present, and plays a vital role in starting and stopping, load regulation, accident stopping and the like of the hydraulic turbine unit.
Oil pressure unit includes the disconnect-type, returns oil tank and overhead tank and separately installs promptly, and the unit is in operation, and the seepage condition appears for a long time in unit oil pressure unit oil pump outlet pipeline, through eliminating a lot of and lacking and disassembling the processing comprehensively, still can not thoroughly eliminate, and the analysis reason mainly has following several:
1. the precision error and welding deformation of each branch pipe in the main pipe influence the assembly quality of other branch pipes;
2. the oil pump pipeline has more joints, the positions of the valve group and the filter are not adjustable, and the length precision of each branch pipe is difficult to control;
3. the unit must vibrate during operation, and the long-term operation of the unit can loosen the whole oil pump pipeline of the oil pressure device, thereby causing oil leakage of the pipeline joint of the oil pressure device.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model provides a power station unit oil pressure device returns oil tank oil pump pipeline structure has the advantage that oil pressure device oil pipe way junction does not have the oil leak.
The technical scheme of the utility model is that:
the utility model provides a power station unit oil pressure device returns oil tank oil pump pipeline structure, includes overhead tank, oil tank and locates the big oil pump at oil tank top, big pump connector, valves and the filter that big oil pump export department connected gradually still include first manual ball valve and high-pressure hose, the exit linkage of filter is in the one end of high-pressure hose, the other end of high-pressure hose is connected the one end of first manual ball valve, the other end of first manual ball valve is connected on main oil pipe, main oil pipe with be equipped with first check valve on the link of overhead tank.
The working principle of the technical scheme is as follows:
the pipeline connected on the first manual ball valve of each branch is replaced by a high-pressure hose for adjusting and compensating the connection between each branch and the main oil pipe, and the high-pressure phenomenon in the pipeline caused by processing and welding errors of each branch is eliminated.
In a further technical scheme, one end of the main oil pipe is communicated with a bypass pipeline, a second one-way valve and a second manual ball valve are arranged on the bypass pipeline, and the tail end of the bypass pipeline is communicated with the oil return tank.
In a further technical scheme, a support is arranged at the bottom of the filter and fixed to the top of the oil tank, and a mounting hole for mounting the filter on the support is a waist-shaped hole.
In a further technical scheme, a pipeline supporting frame for supporting a main oil pipe is arranged on the top surface of the oil return tank.
The utility model has the advantages that:
1. the pipeline connected to the first manual ball valve of each branch is replaced by a high-pressure hose for adjusting and compensating the connection between each branch and the main oil pipe, the phenomenon of joint failure caused by machining and welding errors of each branch is eliminated, the size of the manual ball valve is shortened, so that the high-pressure hose is conveniently arranged at the rear end of the first manual ball valve and the main oil pipe connection pipeline and used for adjusting the compensation of final position errors, and in order to prevent large-area oil leakage caused by the breakage of the high-pressure hose of each branch, a first one-way valve is additionally arranged on the pipeline between the outlet of the main oil pipe and the pressure tank;
2. the pipeline connected with each flange is manufactured by changing welding into an integral forming process, so that the phenomenon that the flanges at two ends are not parallel due to welding deformation of the original welding pipeline and a gap defect exists after connection is avoided, and the reliable connection between the pipeline and equipment is improved;
3. the filter bracket is changed into a waist-shaped hole so as to be convenient for adjusting and compensating the field installation distance between the oil filter and the pipeline;
4. after the check valve is added to the main oil pipe, a bypass pipeline is added to the oil pipeline for conveniently discharging oil in the oil tank to the oil return tank in maintenance and daily work, and the manual ball valve is installed in the middle of the oil pipeline.
Drawings
Fig. 1 is the utility model discloses a power station unit oil pressure unit returns oil tank oil pump pipeline structure's schematic structure.
Description of reference numerals:
1. a large pump connector; 2. a valve block; 3. a support; 4. a filter; 5. a high pressure hose; 6. a first manual ball valve; 7. a second one-way valve; 8. a second manual ball valve; 9. a support frame; 10. a first check valve; 11. an outlet oil pipe of the small pump; 12. a small pump connector; 13. a small oil pump; 14. a large oil pump; 15. and an oil return tank.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
Example (b):
as shown in fig. 1, an oil pump pipeline structure of an oil return tank of an oil pressure device of a hydropower station unit comprises an oil return tank 15, a pressure tank, a large oil pump 14, a large pump connector 1, a valve bank 2, a filter 4, a first manual ball valve 6, a high-pressure hose 5 and a small oil pump 13;
three large oil pumps 14 and two small oil pumps 13 are arranged on one side of the top of the oil return tank 15 side by side, and the outlet of each large oil pump 14 is connected with a large pump connector 1, a valve bank 2 and a filter 4 sequentially through a 309S stainless steel pipeline; the outlet of the filter 4 is connected to one end of a high-pressure hose 5, the other end of the high-pressure hose 5 is connected to one end of a first manual ball valve 6, the other end of the first manual ball valve 6 is connected to a main oil pipe, and a first one-way valve 10 is arranged at one end of the main oil pipe, which is connected to the pressure tank;
the outlets of the two small oil pumps 13 are provided with small pump connectors 12, the outlets of the small pump connectors 12 are connected with small pump outlet oil pipes 11, the small pump outlet oil pipes 11 on the two small pump connectors 12 are respectively connected with two end parts of a three-way pipe, the other end part of the three-way pipe is connected with one end of a high-pressure hose 5, the other end of the high-pressure hose 5 is connected with one end of a first manual ball valve 6, and the other end of the first manual ball valve 6 is communicated with a main oil pipe;
through on-site actual investigation, the sizes of the connecting pieces of the pipelines are measured, 309S stainless steel pipelines on each branch are replaced, the 309S stainless steel pipelines are originally connected with flanges on parts at two ends of the 309S stainless steel pipelines, the flanges at the two ends are not parallel due to the adoption of a welding technical means, and gap defects exist after connection;
therefore, the 309S stainless pipe for connecting the two parts and the flanges on the two end parts are manufactured by adopting an integral molding technology, namely: the 309S stainless steel is integrally machined by a machine tool, so that the welding deformation of an original welding pipeline is avoided, and the reliable connection between the pipeline and equipment is improved; the device specifically comprises a connecting pipe fitting between a large pump connector 1 and a valve block 2, and a connecting pipe fitting between the valve block 2 and an oil filter 4;
309S the stainless steel pipeline is integrally processed by a machine tool, welding traces, cracks and flaws do not exist, the pipe diameter, the flange surface, the sealing groove and the like need to meet the requirements of field installation, the first one-way valve 10 is a stainless steel ball valve, the first one-way valve 10 is a brand new product and is provided with a certificate of quality or a quality certification material, the pressure grade of the first one-way valve 10 meets the requirements, the high-pressure hose 5 needs to be a brand new product and is provided with the certificate of quality or the quality certification material, and the pressure grade of the hose meets the requirements;
the high-pressure hose 5 has the advantages of effective shock absorption, vibration conduction avoidance, good wrapping property, effective oil leakage prevention, and capability of avoiding oil leakage caused by looseness due to vibration caused by oil flow passing and interruption during long-time rigid connection and oil pump starting during operation of a unit;
the pipeline that connects on the first manual ball valve 6 of each branch road is changed into high-pressure hose 5, an adjustment compensation that is used for each branch road and main oil pipe to be connected, eliminate each branch pipe and hold back the strength phenomenon because of the connection that processing and welding error caused, manual ball valve, the size shortens, so that be in 6 rear ends of first manual ball valve and main oil pipe connecting tube installation high-pressure hose 5, a compensation that is used for adjusting final position error, for preventing that each branch road high-pressure hose 5 from causing the large tracts of land oil leak after damaged, increase first check valve 10 on the pipeline between main oil pipe export to pressure tank, through this technical scheme, the problem of oil pressure unit oil pipe way junction oil leak has been solved.
In another embodiment:
as shown in fig. 1, a second one-way valve 7 is arranged on the main oil pipe to prevent the oil pump branch pipes from being broken to cause a large amount of pressure oil in the oil tank to leak; meanwhile, a bypass pipeline is arranged on the main oil pipe, one end of the bypass pipeline is communicated with the main oil pipe, the other end of the bypass pipeline is communicated with the oil return tank 15, and the second manual ball valve 8 is arranged in the middle of the bypass pipeline, so that oil in the oil tank can be conveniently discharged into the oil return tank 15 in the process of maintenance and daily work.
In another embodiment:
the bottom of the filter 4 is provided with a support 3, the support 3 is fixed at the top of the oil tank, and a mounting hole for mounting the filter 4 on the support 3 is a waist-shaped hole so as to adjust and compensate the mounting distance between the filter 4 and the pipeline on site.
In another embodiment:
after increasing first check valve 10 on main oil pipe, main oil pipe's height dimension compares former size and increases, need adjust main oil pipe's pipeline support 3 size, the first manual ball valve 6 of connecting on each branch road high pressure hose 5 in addition, only be provided with fixedly in filter 4 one end department, consequently increase to support fixedly below the first manual ball valve 6 of each branch road, avoid appearing the phenomenon of tenesmus, on the other hand, be equipped with pipeline support frame 9 in main oil pipe's downside, pipeline support frame 9 is fixed at the top surface that returns oil tank 15.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (4)
1. The utility model provides a power station unit oil pressure device returns oil tank oil pump pipeline structure, includes overhead tank, oil tank and locates the big oil pump at oil tank top, big pump connector, valves and the filter that big oil pump export department connected gradually, its characterized in that still includes a manual ball valve and high-pressure hose, the exit linkage of filter is in the one end of high-pressure hose, the other end of high-pressure hose is connected the one end of a manual ball valve, the other end of a manual ball valve is connected on main oil pipe, main oil pipe with be equipped with a check valve on the link of overhead tank.
2. The structure of an oil pump pipeline of an oil return tank of an oil pressure device of a hydropower unit according to claim 1, wherein one end of the main oil pipe is communicated with a bypass pipeline, a second one-way valve and a second manual ball valve are arranged on the bypass pipeline, and the tail end of the bypass pipeline is communicated with the oil return tank.
3. The structure of the oil pump pipeline of the oil return tank of the hydraulic unit of the hydropower station as claimed in claim 1, wherein a support is arranged at the bottom of the filter, the support is fixed at the top of the oil tank, and a mounting hole for mounting the filter on the support is a kidney-shaped hole.
4. The structure of an oil pump pipeline of an oil return tank of an oil pressure device of a hydropower unit as defined in claim 2, wherein a pipeline support frame for supporting a main oil pipe is arranged on the top surface of the oil return tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022770245.6U CN213775882U (en) | 2020-11-25 | 2020-11-25 | Oil pump pipeline structure of oil return tank of hydraulic unit of hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022770245.6U CN213775882U (en) | 2020-11-25 | 2020-11-25 | Oil pump pipeline structure of oil return tank of hydraulic unit of hydropower station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213775882U true CN213775882U (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022770245.6U Active CN213775882U (en) | 2020-11-25 | 2020-11-25 | Oil pump pipeline structure of oil return tank of hydraulic unit of hydropower station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213775882U (en) |
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2020
- 2020-11-25 CN CN202022770245.6U patent/CN213775882U/en active Active
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