CN211574733U

CN211574733U - Oiling device for turbine lubricating oil

Info

Publication number: CN211574733U
Application number: CN201921756369.XU
Authority: CN
Inventors: 于建红; 李勇刚; 赵彦昌; 韩多军; 徐鹏翔
Original assignee: Jiayuguan Dayou Jianeng Chemical Co ltd
Current assignee: Jiayuguan Dayou Jianeng Fine Carbon Technology Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-09-25
Anticipated expiration: 2029-10-18

Abstract

The utility model provides an oiling device for steam turbine lubricating oil, install into oil pipe and play oil pipe including oil tank, this oil tank, advance oil pipe and be the U type and be located the oil tank, advance oil pipe's one end and expose the oil tank and meet with the main oil pump export, be equipped with the grease squirt in the oil tank, the grease squirt mainly comprises spray tube, mixing chamber and diffuser pipe, advances oil pipe's other end mouth of pipe and installs the contraction section conduct that the bore reduces the spray tube, the diffuser pipe corresponds locates the spray tube top rather than supporting the use, the top and the play oil pipe bottom rigid coupling of diffuser pipe, and spray tube and diffuser pipe are located the mixing chamber, and the casing equipartition of mixing chamber is poro. The utility model discloses a set up the shrink section to the shower nozzle export, reasonable adjustment shrink mouth diameter has improved the oil flow velocity to from spray tube spun oil stream with higher speed, the negative pressure of formation is bigger, and the oil that drives more oil tanks gets into the diffuser pipe, guarantees that unit oil pressure is in the regulation within range, has solved the steam turbine oil system oil pressure problem on the low side, has guaranteed generating set continuous stable operation.

Description

Oiling device for turbine lubricating oil

Technical Field

The utility model belongs to the field of machinery, a steam turbine is related to, concretely relates to oiling device for steam turbine lubricating oil.

Background

At present, the oil pressure at the inlet and the oil pressure at the outlet of a main oil pump of a steam turbine of a tail gas power station are low, so that the oil pressure of primary and secondary pulses is low, the load fluctuation is large, and the load adding and reducing reaction is slow or even does not act; and meanwhile, the lubricating oil pressure is low and gives an alarm, and the machine is stopped for several times, so that the protection action of the machine set is jumped. The effect of steam turbine lubricating oil system is lubricated bearing and the friction loss who reduces the bearing to take away the heat that produces because of the friction and the heat that passes by the rotor, guarantee its normal work, and low oil pressure just can not play lubricated and refrigerated effect, more probably cause the axle bush to burn out the normal lubricating oil pressure that should guarantee in the steam turbine operation. The insufficient output of the main oil pump causes the oil quantity at the inlet of the main oil pump to be small, the corresponding outlet oil pressure is low, the load is frequently fluctuated, the boiler, the steam turbine and the electricity are difficult to coordinate and control, the system voltage is frequently fluctuated, and the vicious accidents of tripping of electrical equipment, overpressure of the boiler, overspeed of the steam turbine and the like are caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a steam turbine is oiling device for lubricating oil solves the problem that steam turbine oil lubricating oil system main oil pump import oil pressure and export oil pressure are low on the low side, has guaranteed that the unit operation is stable, has improved the sensitivity of unit control, has avoided the emergence of shut down accident.

The utility model adopts the technical scheme as follows: the utility model provides a steam turbine is oiling device for lubricating oil, installs into oil pipe and play oil pipe including oil tank, this oil tank, advances oil pipe and is the U type and is located the oil tank, and the one end that advances oil pipe exposes the oil tank and meets with the main oil pump export, is equipped with the grease squirt in the oil tank, and the grease squirt mainly comprises spray tube, mixing chamber and diffuser pipe, advances oil pipe's the other end mouth of pipe and installs the contraction section conduct that the bore reduces the spray tube, the diffuser pipe corresponds to locate the spray tube top rather than supporting use, the top and play oil pipe bottom rigid coupling of diffuser pipe, and spray tube and diffuser pipe are located the mixing chamber, and the casing equip.

Preferably, the top end of the diffuser pipe penetrates out of the top surface of the mixing chamber and is fixedly connected with the mixing chamber, and the other end of the oil inlet pipe penetrates into the bottom surface of the mixing chamber and is fixedly connected with the mixing chamber.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a set up the contraction section to the shower nozzle export, the reasonable adjustment shrink mouth diameter, the oil velocity of flow has been improved, thereby from spray tube spun oil stream with higher speed, the negative pressure of formation is bigger, thereby the oil that drives more oil tanks gets into the diffuser pipe, it is in the regulation within range to have guaranteed the unit oil pressure, thoroughly solved the problem on the low side of turbine oil system oil pressure, the generating set continuous stable operation has been guaranteed, the accident has been avoided taking place, the sensitivity of unit control has been improved, the steam turbine has been avoided burning tiles, the emergence of accidents such as trip, the unit has been avoided shutting down, the loss of company has been avoided. The utility model discloses the accessible is changed not unidimensional nozzle, realizes the variable adjustment of grease squirt oil pressure, oil mass.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the oil-gas mixing device comprises an oil inlet pipe, an oil outlet pipe, an oil tank, a diffuser pipe, a spray pipe, a contraction section, a mixing chamber, a top opening and a bottom opening, wherein the oil inlet pipe is 2 degrees, the oil outlet pipe is 3 degrees, the diffuser pipe is 4 degrees, the spray pipe is 5 degrees, the contraction section is 6 degrees, the mixing chamber is 7 degrees, and the.

Detailed Description

The invention will be further explained and explained with reference to the drawings;

the utility model provides a steam turbine is oiling device for lubricating oil, includes that oil tank, oil tank are last to install into oil pipe 1 and go out oil pipe 2, advances oil pipe 1 and is asymmetric U type pipe, is located the oil tank, and its one end height one end is low, and the high one end of U type pipe exposes oil tank top surface and main oil pump export looks rigid coupling, and the low one end of U type pipe is located oil tank 3, and the top of low side is the bottom of going out oil pipe 2, goes out oil pipe 2 and wears out from 3 top surfaces of oil tank, and pipe wall and oil tank top surface. The oil ejector mainly comprises a spray pipe 5, a mixing chamber 7 and a diffuser pipe 4, wherein a pipe orifice at one end of the low oil inlet pipe 1 is butted with a contracted section with a reduced diameter in a flange connection mode to serve as the spray pipe 5, the diffuser pipe 4 matched with the spray pipe 5 is arranged above the spray pipe 5, the spray pipe 5 and the diffuser pipe 4 above the spray pipe are positioned in the mixing chamber 7, and holes are uniformly distributed on a shell of the mixing chamber and communicated with an oil tank 3; one end of the U-shaped pipe at the lower part penetrates through a bottom opening 9 at the bottom surface of the mixing chamber 7 to be fixedly connected with the mixing chamber, the upper end of the diffuser pipe 4 penetrates out of a top opening 8 at the top surface of the mixing chamber, and the periphery of the diffuser pipe is fixedly connected with the top surface of the mixing chamber 7, so that the mixing chamber 7 is fixed in the oil tank.

When the oil diffuser is used, pressure oil is accelerated in the spray pipe through the main oil pump, so that negative pressure is formed in a mixing chamber where the spray pipe is located, oil in the mixing chamber in the oil tank is continuously brought into the diffuser pipe under the entrainment action of the negative pressure and the free jet flow, and mixed oil flow is conveyed into the main oil pump or oil for bearing lubrication after being decelerated and boosted in the diffuser pipe. The oil injector mainly comprises a spray pipe, a mixing chamber and a diffuser pipe, and mainly has the function of converting a small amount of high-speed oil into a large amount of low-speed oil; the flow velocity of pressure oil when having increased the blowout from the spray tube through the contraction section that the bore reduces to the oil that drives a large amount of oil tanks gets into the diffuser pipe, has guaranteed that steam turbine main oil pump import oil pressure is sufficient, thereby makes the export oil pressure improve, and corresponding whole speed governing oil system and lubricating oil system oil pressure increase substantially, have guaranteed that the unit oil pressure is in the regulation within range.

Claims

1. The utility model provides a steam turbine is oiling device for lubricating oil, installs into oil pipe and play oil pipe including oil tank, this oil tank, advances oil pipe and is asymmetric U type and is located the oil tank, and the one end that advances oil pipe exposes the oil tank and meets its characterized in that with the main oil pump export: be equipped with the grease squirt in the oil tank, the grease squirt mainly comprises spray tube, mixing chamber and diffuser pipe, and the other end mouth of pipe that advances oil pipe installs the contraction section that the bore reduces and does the spray tube, the diffuser pipe corresponds locates the spray tube top rather than supporting use, the top and the play oil pipe bottom rigid coupling of diffuser pipe, and spray tube and diffuser pipe are located the mixing chamber, and the casing equipartition of mixing chamber is porose.

2. The oiling device for turbine lubricating oil according to claim 1, wherein: the top end of the diffuser pipe penetrates out of the top surface of the mixing chamber and is fixedly connected with the mixing chamber.

3. The oiling device for turbine lubricating oil according to claim 1 or 2, characterized in that: the other end of the oil inlet pipe penetrates through the bottom surface of the mixing chamber and is fixedly connected with the mixing chamber.