CN212430401U - High-level oil tank system with regulating valve - Google Patents
High-level oil tank system with regulating valve Download PDFInfo
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- CN212430401U CN212430401U CN202020694216.3U CN202020694216U CN212430401U CN 212430401 U CN212430401 U CN 212430401U CN 202020694216 U CN202020694216 U CN 202020694216U CN 212430401 U CN212430401 U CN 212430401U
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Abstract
The utility model belongs to turbine equipment field discloses a take high-order oil tank system of governing valve. Including high-order oil tank, return oil pipe way and oil feed line, its characterized in that, be provided with the sight glass on the oil feed line way, set gradually No. one stop valve and No. two stop valves on the oil feed line way, No. one stop valve department connects in parallel and is provided with the check valve, No. two stop valves department connects in parallel and is provided with pneumatic control valve. The utility model discloses can high-order oil tank fuel feeding by the fine control regulation, furthest extension equipment prevents to lead to the fact radial and thrust bearing dry grinding to damage because of high-order oil tank fuel cut-off at the fuel feeding time of accident shutdown lazy walking.
Description
Technical Field
The utility model belongs to turbine equipment field, concretely relates to take high-order oil tank system of governing valve.
Background
In the fields of chemical industry, metallurgy, distributed energy and the like, turbine rotating equipment such as compressors, motors, steam turbines and the like are widely used as the core of energy conversion. Most turbine equipment adopts forced lubricating oil for lubrication, so that the rotor can safely and stably rotate. The configuration of the high-level oil tank is to ensure that when the unit encounters an emergency accident, such as a high-low voltage power failure, and the lubricating oil pump stops supplying oil, the high-level oil tank supplies temporary lubricating oil when the rotor idles to a halt process by means of self weight, so that tile burning or axle neck damage and even safety accidents are avoided.
At present, a throttling device is not arranged on an oil supply pipeline of a high-level oil tank, oil of the high-level oil tank can be discharged quickly, and the high-level oil tank cannot be accurately matched with the safety shutdown time of a unit. Or some high-order oil tanks are provided with mechanical current-limiting devices, but the safe oil quantity required by the unit at different rotating speeds is different, and the safety risk of insufficient oil supply exists after current limiting.
Disclosure of Invention
An object of the utility model is to provide a take high-order oil tank system of governing valve for when solving among the prior art equipment shut down the lazy away in the accident, high-order oil tank fuel cut off and cause radial and thrust bearing dry grinding to damage and the problem that current high-order oil tank can not accurate matching device fuel feeding.
In order to realize the task, the utility model discloses a following technical scheme:
the utility model provides a take high-order oil tank system of governing valve, includes high-order oil tank, returns oil pipe way and oil feed line, its characterized in that, it is provided with the sight glass on the oil pipe way to return, last stop valve and No. two stop valves of having set gradually on the oil feed line way, the parallelly connected check valve that is provided with of stop valve department, No. two parallelly connected pneumatic control valves that are provided with of stop valve department.
Furthermore, the installation height of the first stop valve, the second stop valve and the sight glass is 1-1.5 meters higher than the horizontal center line of the main oil supply pipeline of the lubricating oil.
Furthermore, the installation position of the high-level oil tank is 5-7 meters higher than the center line of the axis of the oil supply unit.
Furthermore, a sewage discharge stop valve is arranged below the high-level oil tank.
Furthermore, a breathing cap is arranged above the high-level oil tank.
Furthermore, a filter screen is arranged in the breathing cap.
Compared with the prior art, the utility model has the following technical characteristics:
(1) the utility model discloses can be according to the oil supply under the accurate control high-order oil tank accident condition of rotor speed, oil pipe pressure, axle bush temperature, match with the required minimum demand accuracy of unit safety shut down, accident such as furthest extension oil feed time can effectively avoid burning tiles, axle journal damage practices thrift repair cost and shutdown loss.
(2) The utility model discloses a power comes from uninterrupted power source, guarantees when the unit takes place the outage accident, and the governing valve can normally be adjusted.
(3) The utility model discloses a pneumatic control valve mounted position center flushes with lubricating oil main oil supply pipeline horizontal center line, but real-time supervision governing valve operation conditions and easy access adjustment.
(4) The utility model discloses a pneumatic control valve is equipped with parallelly connected stop valve, can realize the bypass control valve when governing valve trouble and maintenance, does not influence unit normal operating.
(5) The utility model discloses a pneumatic control valve possesses the function of opening soon. As a safety guarantee, when the temperature of the bearing bush rises to be 5 ℃ lower than the limit temperature, the pneumatic regulating valve is opened safely and quickly. Requiring a quick opening within 1S.
Drawings
Fig. 1 shows a device connection diagram of the present invention.
The reference numbers in the figures represent: 1-breathing cap, 2-sight glass, 3-blowdown stop valve, 4-one-way valve, 5-first stop valve, 6-pneumatic regulating valve, 7-second stop valve and 8-high-level oil tank.
Detailed Description
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
In the present invention, unless otherwise specified, the use of directional terms such as "upper" and "lower" generally means that the terms are defined with reference to the drawing plane of the corresponding drawing, and "inner" and "outer" mean that the terms are inner and outer relative to the outline of the corresponding part.
The embodiment discloses a high-order oil tank system of area governing valve, including high-order oil tank 8, return oil pipe way and fuel feeding pipeline, be provided with sight glass 2 on the fuel feeding pipeline, fuel feeding pipeline has set gradually stop valve 5 and No. two stop valves 7 on the road, No. 5 parallelly connected check valves 4 that are provided with of stop valve, No. 7 parallelly connected pneumatic control valves 6 that are provided with of stop valve of No. two. The oil return pipeline is connected with the lubricating oil station box body, and oil overflowing from the high-level oil tank 8 flows back to the lubricating oil tank through the oil return pipeline. The oil supply pipeline is connected with the unit.
The working process of the utility model is as follows:
(1) before the unit is started, oil needs to be supplied to a high-level oil tank at the moment;
(2) after the unit is started, the oil is cut off in case of failure, and the unit is supplied with oil through a high-level oil tank;
(3) after the unit is started, the unit normally operates, and at the moment, oil needs to be supplied to the oil tank and the unit at the same time;
for case (1): and the lubricating oil supply pipeline supplies oil to each bearing of the unit and supplies oil to the high-level oil tank through the high-level oil tank oil supply branch. The lubricating oil supplies oil to a high-level oil tank through a second stop valve 7 and a first stop valve 5 (two stop valves are designed here, the stop valve is used when the oil tank 5 is filled with oil and is closed after being filled with the oil, the stop valve 7 is used when the regulating valve fails or is overhauled), the lubricating oil return tank is observed on the sight glass 2 after the oil tank is filled with the oil (at this time, the sight glass can see that the oil falls, namely the high-level oil tank is filled with the oil), and the stop valves 5 are turned off. The lubricating oil is now slowly supplied to the high-level tank through the orifice in the non-return valve 4, which must be ensured at any time for safety reasons to be full.
For case (2): at the moment, the oil tank is full, the second stop valve 7 is closed, the high-pressure lubricating oil presses the lubricating oil into the high-level oil tank 8 along the oil supply pipe, and when the lubricating oil pump of the unit breaks down due to power failure, oil in the high-level oil tank starts to supply oil to bearings of the unit through the check valve 4 and the pneumatic regulating valve 6 under the action of gravity.
For case (3): after the unit normally operates, the second stop valve 7 is closed, lubricating oil is slowly and continuously supplied to the high-level oil tank through the pneumatic regulating valve 6, and the oil tank supplies oil to the unit through other pipelines under the condition.
Specifically, the installation heights of the first stop valve 5, the second stop valve 7 and the sight glass 2 are 1-1.5 meters higher than the horizontal center line of the main oil supply pipeline of the lubricating oil.
Specifically, the installation position of the high-level oil tank 8 is 5-7 meters higher than the axis center line of the oil supply unit.
Specifically, a blowdown stop valve 3 is further arranged below the high-level oil tank 8 and used for periodically cleaning impurities in the oil tank.
Specifically, the top of high-order oil tank 8 still is provided with breathing cap 1, breathing cap 1 guarantees in the oil tank that the same with atmospheric pressure, forms the negative pressure in the oil tank when preventing the fuel feeding, leads to the fuel feeding not smooth with the oil tank by atmospheric pressure extrusion deformation.
Specifically, be provided with the filter screen in the breathing cap 1, debris such as the dust that prevent in the air enter high-order oil tank body 8.
Specifically, the sight glass 2 on the oil return pipeline is used for observing whether the high-level oil tank body 8 is full.
Specifically, pneumatic control valve 6 pneumatic control valve contains valve body, locator, power source, air source interface, and the power comes from uninterrupted power source, guarantees when the unit takes place the outage accident that the governing valve can normally be adjusted.
Specifically, pneumatic control valve 6 adjusts the valve opening according to the rotational speed of unit and lubricating oil branch pipe oil pressure real time, provides the minimum oil mass of guaranteeing safe operation for the unit, monitors the axle bush temperature simultaneously, as the safety guarantee, and pneumatic control valve 6 is opened fast safely when the axle bush temperature is less than 5 ℃ than the limiting temperature.
Wherein, the corresponding relation of valve opening and rotational speed and oil pressure is:
P＝K×Q0×(K1×N(t)/N0×q1×&×π×B1×D2×n1/1000+q2×n2×B2×V×h)×H×r/P1
k: valve characteristic parameters, Q0 valve, P: valve opening, K1: rotation speed coefficient, n (t): rotational speed at a certain time, N0: rated rotation speed, q 1: support bearing flow coefficient (depending on bearing form, e.g. round pad, tiltable pad), q 2: thrust bearing flow coefficient (different according to bearing forms, such as tilting pad and fixed type), &: bearing clearance, B1: support pad width, B2: width of tilting pad, D: bearing nominal diameter, n 1: number of support pads, n 2: number of tilting pads, V: linear velocity, h: oil film thickness, H: height of high-level oil tank, r: oil density, P1: branch line oil pressure.
Example 1
An electric tractor AV63-14 axial flow compressor unit of a certain steel company, a high-level oil tank 1200L and a position height of 7 m, wherein the oil supply time is 14 minutes under the condition that an adjusting air valve is fully opened. In the unit debugging stage, when an emergency shutdown test is carried out, the lubricating oil pump is manually closed, and high-low voltage power failure accidents are simulated. At the moment, the high-level oil tank starts to supply oil to the unit, 15 minutes are consumed when the unit is reduced from the rated rotation speed of 5000rpm to 0rpm, the unit is finally safely stopped through real-time adjustment of the pneumatic adjusting valve, and the high-level oil tank still has 10% oil after the unit is stopped. Before and after the test adjustment air valve participates in adjustment, the safe oil supply time of the high-level oil tank is prolonged from 14 minutes to 17 minutes, and the using effect is obvious.
The data are as follows:
| time of day | 12：00 | 12：03 | 12：06 | 12：09 | 12：12 | 12：15 |
| Rotational speed rpm | 5000 | 4112 | 2998 | 2015 | 998 | 0 |
| Valve opening degree | 100％ | 91％ | 85％ | 70％ | 66％ | 55％ |
| Branch pressure KPa | 72 | 60 | 51 | 44 | 30 | 18 |
Claims (6)
1. The utility model provides a take high-order oil tank system of governing valve, includes high-order oil tank (8), returns oil pipe way and oil feed line, its characterized in that, it is provided with sight glass (2) on the oil pipe way to return, oil feed line has set gradually stop valve (5) and No. two stop valves (7) on the way, stop valve (5) department connects in parallel and is provided with check valve (4), No. two stop valves (7) department connects in parallel and is provided with pneumatic control valve (6).
2. The high-level oil tank system with the regulating valve according to claim 1, wherein the installation heights of the first stop valve (5), the second stop valve (7) and the sight glass (2) are 1-1.5 meters higher than the horizontal center line of the main oil supply pipeline of lubricating oil.
3. The high-level fuel tank system with the regulating valve as claimed in claim 1, wherein the high-level fuel tank (8) is installed at a position 5-7 m higher than the axial center line of the fuel supply unit.
4. The high-level fuel tank system with the regulating valve according to claim 1, characterized in that a blow-off cut-off valve (3) is further provided below the high-level fuel tank (8).
5. The high-level fuel tank system with the regulating valve according to claim 1, wherein a breathing cap (1) is further provided above the high-level fuel tank (8).
6. High-level fuel tank system with regulating valve according to claim 5, characterized in that a filter screen is provided inside the breathing cap (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020694216.3U CN212430401U (en) | 2020-04-29 | 2020-04-29 | High-level oil tank system with regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020694216.3U CN212430401U (en) | 2020-04-29 | 2020-04-29 | High-level oil tank system with regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212430401U true CN212430401U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020694216.3U Active CN212430401U (en) | 2020-04-29 | 2020-04-29 | High-level oil tank system with regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212430401U (en) |
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2020
- 2020-04-29 CN CN202020694216.3U patent/CN212430401U/en active Active
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