CN217816140U

CN217816140U - Oil liquid filtering system of steam turbine

Info

Publication number: CN217816140U
Application number: CN202221468187.4U
Authority: CN
Inventors: 崔江涛; 陈久林; 王帮建; 王节林; 刘兴民; 李伟; 周智杨; 覃操
Original assignee: Huadian Fuxin Jiangmen Energy Co ltd
Current assignee: Huadian Fuxin Jiangmen Energy Co ltd
Priority date: 2022-06-11
Filing date: 2022-06-11
Publication date: 2022-11-15
Anticipated expiration: 2032-06-11

Abstract

The utility model discloses a fluid filtration system of steam turbine relates to the lubricated technical field of steam turbine, and this fluid filtration system includes the main filtration section of thick bamboo, is equipped with cartridge filter, filter equipment and blocks up detection mechanism, the main filtration section of thick bamboo with be equipped with two tee bend switching-over valves between the cartridge filter, two the tee bend switching-over valve sets up from top to bottom, and the three connector that is located the tee bend switching-over valve of top installs one respectively and advances oil pipe and two defeated oil pipes, and one play oil pipe and two back flows are installed respectively to the three connector that is located the tee bend switching-over valve of below, the utility model discloses when the main filtration section of thick bamboo with be equipped with the inside pressure of cartridge filter and continuously rise, for avoiding dangerous emergence, make lubricating oil directly enter into the inside of connecting cylinder seat and back flow through the pressure valve, the utility model discloses when the pressure difference value that first pressure difference table or second pressure difference table detected is greater than internal setting value, can be to corresponding alarm signal to remind the staff to switch over the activestandby station.

Description

Oil liquid filtering system of steam turbine

Technical Field

The utility model relates to a lubricated technical field of steam turbine specifically is a fluid filtration system of steam turbine.

Background

The steam turbine set needs to convey lubricating oil in the turning, starting and stopping processes so as to jack up the rotor, avoid dry friction between a motor journal and a bearing bush in the low-rotation-speed process of the steam turbine set and reduce turning moment; in the process of reducing the stop rotating speed of the turbo generator set, the tiles are ground at low speed in order to prevent the occurrence of low-speed tile grinding.

When carrying lubricating oil, need filter lubricating oil, after filtering for a long time, can pile up a large amount of impurity on the filter core, can lead to the filter core to block up, influence lubricated filtration efficiency, and block up the pressure increase that can lead to cartridge filter inside, influence the operation safety of cartridge filter, the not convenient to use person uses.

In view of the above problems, an improved oil filter system for a steam turbine is now devised.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fluid filtration system of steam turbine to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a fluid filtration system of steam turbine, includes the main filtration section of thick bamboo, is equipped with cartridge filter, filtering mechanism and blocks up detection mechanism, the cylinder cap of the switch of being convenient for is all installed to the main filtration section of thick bamboo and the upper end of being equipped with the cartridge filter, the main filtration section of thick bamboo with be equipped with two tee bend switching-over valves between the cartridge filter, two the tee bend switching-over valve sets up from top to bottom, and the three connector that is located the tee bend switching-over valve of top is installed one respectively and is advanced oil pipe and two defeated oil pipes, two defeated oil pipe keeps away from the one end of tee bend switching-over valve and installs respectively on the main filtration section of thick bamboo and the lateral wall of being equipped with the cartridge filter, and one play oil pipe and two back flows are installed respectively to the three connector of tee bend switching-over valve that is located the below the back flow is kept away from the one end of tee bend switching-over valve and installs respectively on the main filtration section of thick bamboo and the lateral wall of being equipped with the cartridge filter.

The filtering mechanism is arranged in the main filter cylinder and the standby filter cylinder and used for filtering lubricating oil, so that the cleanliness of the lubricating oil is improved, and the lubricating effect of the lubricating oil is further improved.

The blockage detection mechanism is arranged between the oil delivery pipe and the return pipe and used for detecting whether the filtering mechanism is blocked by utilizing pressure difference, alarming and facilitating the main-standby switching of working personnel.

As a further aspect of the present invention: the filter mechanism includes two connecting cylinder seats, two connecting cylinder seats are vertical setting respectively in the main filtration section of thick bamboo and the inside of being equipped with the cartridge filter, the one end that the tee bend switching-over valve was kept away from to the back flow is connected in the bottom of connecting cylinder seat, the lateral wall upper end of connecting cylinder seat is the vertical a plurality of connecting rod that is provided with of circumference array, the upper end fixedly connected with of connecting rod is used for making lubricating oil directly enter into the inside pressure valve of connecting cylinder seat when main filtration section of thick bamboo and being equipped with cartridge filter internal pressure great, the cover has the filter core that is used for carrying out filterable to lubricating oil on the lateral wall of connecting rod, the upper end of filter core is hugged closely on the lateral wall of pressure valve, the lower extreme of filter core is hugged closely on the lateral wall of connecting cylinder seat.

As a further aspect of the present invention: the jam detection mechanism includes two connecting pipes, two the connecting pipe is vertical setting in the both sides of tee bend switching-over valve respectively, install on defeated oil pipe the upper end of connecting pipe, the lower extreme of connecting pipe is installed on the back flow, install on the connecting pipe between main cartridge filter and the tee bend switching-over valve and be used for carrying out the first differential pressure table that detects to the pressure differential between defeated oil pipe on the main cartridge filter and the back flow, install on the connecting pipe between cartridge filter and the tee bend switching-over valve and be used for carrying out the second differential pressure table that detects to the pressure differential between defeated oil pipe on the cartridge filter and the back flow, defeated oil pipe upper end directly over first differential pressure table and the second differential pressure table all installs the alarm that is used for the warning.

As a further aspect of the present invention: and a sealing gasket for preventing hydraulic oil from leaking is arranged on the cylinder cover.

As a further aspect of the present invention: and the lower end of the filter element is provided with a magnet used for enabling the filter element to be tightly attached to the connecting cylinder seat.

As the utility model discloses further scheme again: be provided with the flashing light of being convenient for the staff discovery on the alarm.

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

1. the utility model discloses be provided with filtering mechanism, utilize the filter core to filter lubricating oil, improve the cleanliness factor of lubricating oil, and then improve the lubricated effect of lubricating oil, when the filter core produced the jam simultaneously, can lead to lubricating oil to flow not smooth, if the staff can not in time carry out the activestandby switch, can lead to the main filtration section of thick bamboo and the inside pressure of being equipped with the filtration section of thick bamboo portion to last rising, for avoiding dangerous the emergence, make lubricating oil directly enter into the inside of connecting cylinder seat and back flow through the pressure valve.

2. The utility model discloses be provided with and block up detection mechanism, utilize first differential pressure table to detect the pressure differential between defeated oil pipe on the main filtration section of thick bamboo and the back flow, utilize the second differential pressure table to detect the pressure differential between defeated oil pipe on the filter cartridge and the back flow, when the filter core takes place to block up, pressure differential meeting grow between defeated oil pipe and the back flow, when the pressure differential that first differential pressure table or second differential pressure table detected is greater than inside setting value, can be to the alarm signaling that corresponds, thereby remind the staff to carry out the activestandby switch, improve the lubricated efficiency of lubricating oil.

Drawings

Fig. 1 is a front view of the three-dimensional structure of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic diagram of a rear three-dimensional structure of the present invention.

Wherein: 1. a main filter cartridge; 2. a connecting rod; 3. connecting the cylinder seat; 4. a first differential pressure gauge; 5. a return pipe; 6. an oil outlet pipe; 7. a three-way reversing valve; 8. a connecting pipe; 9. a second differential pressure gauge; 10. preparing a filter cartridge; 11. an oil delivery pipe; 12. a filter element; 13. a cylinder cover; 14. an oil inlet pipe; 15. an alarm; 16. a pressure valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

As shown in fig. 1-3, in the embodiment of the present invention, an oil filtering system of a steam turbine includes a main filtering cylinder 1, a backup filtering cylinder 10, a filtering mechanism and a blockage detection mechanism, a cylinder cover 13 convenient for opening and closing is installed on the upper ends of the main filtering cylinder 1 and the backup filtering cylinder 10, a sealing gasket for preventing hydraulic oil leakage is provided on the cylinder cover 13, two three-way directional valves 7 are provided between the main filtering cylinder 1 and the backup filtering cylinder 10, two three-way directional valves 7 are vertically arranged, an oil inlet pipe 14 and two oil delivery pipes 11 are installed on three connectors of the three-way directional valve 7 located above, two ends of the oil delivery pipes 11 far away from the three-way directional valve 7 are installed on the side walls of the main filtering cylinder 1 and the backup filtering cylinder 10, an oil outlet pipe 6 and two return pipes 5 are installed on three connectors of the three-way directional valve 7 located below, and two ends of the return pipes 5 far away from the three-way directional valve 7 are installed on the side walls of the main filtering cylinder 1 and the backup filtering cylinder 10.

The filter mechanism is arranged in the main filter cartridge 1 and the standby filter cartridge 10 and used for filtering lubricating oil, so that the cleanliness of the lubricating oil is improved, and the lubricating effect of the lubricating oil is further improved.

The blockage detection mechanism is arranged between the oil pipeline 11 and the return pipe 5 and used for detecting whether the filtering mechanism is blocked by utilizing pressure difference, giving an alarm and facilitating the switching of the main and standby of workers.

The filtering mechanism comprises two connecting cylinder bases 3 and two connecting cylinder bases 3 are respectively vertically arranged in a main filter cylinder 1 and a standby filter cylinder 10, one end of a backflow pipe 5, away from a three-way reversing valve 7, is connected to the bottom of the connecting cylinder bases 3, the upper end of the side wall of the connecting cylinder bases 3 is provided with a plurality of connecting rods 2 in a circumferential array mode, the upper end of each connecting rod 2 is fixedly connected with a pressure valve 16, when the internal pressure of the main filter cylinder 1 and the standby filter cylinder 10 is large, lubricating oil directly enters the inside of the connecting cylinder bases 3, the side wall of the connecting rod 2 is sleeved with a filter element 12 used for filtering the lubricating oil, the upper end of the filter element 12 is tightly attached to the side wall of the pressure valve 16, the lower end of the filter element 12 is tightly attached to the side wall of the connecting cylinder bases 3, and the lower end of the filter element 12 is provided with a magnet used for enabling the filter element 12 to be tightly attached to the connecting cylinder bases 3.

The effect of filter mechanism utilizes filter core 12 to filter lubricating oil, improves the cleanliness factor of lubricating oil, and then improves the lubricated effect of lubricating oil, when filter core 12 produced the jam simultaneously, can lead to lubricating oil to flow not smooth, if the staff can not in time carry out the activestandby switch, can lead to main cartridge filter 1 and the inside pressure of reserve cartridge filter 10 to continuously rise, for avoiding dangerous the emergence, make lubricating oil directly enter into the inside of connecting cylinder seat 3 and back flow 5 through pressure valve 16, convenient to use person uses.

Jam detection mechanism includes two connecting pipes 8, two connecting pipe 8 is the vertical both sides that set up at three-way reversing valve 7 respectively, install on defeated oil pipe 11 the upper end of connecting pipe 8, the lower extreme of connecting pipe 8 is installed on back flow 5, install on the connecting pipe 8 between main cartridge filter 1 and the three-way reversing valve 7 and be used for carrying out the first differential pressure table 4 that detects to the pressure differential between defeated oil pipe 11 on the main cartridge filter 1 and the back flow 5, install on the connecting pipe 8 between cartridge filter 10 and the three-way reversing valve 7 and be used for carrying out the second differential pressure table 9 that detects to the pressure differential between defeated oil pipe 11 on the cartridge filter 10 and the back flow 5, defeated oil pipe 11 upper end directly over first differential pressure table 4 and the second differential pressure table 9 all installs alarm 15 that is used for the warning, be provided with the flashing lamp that the staff of being convenient for discovers on alarm 15.

The effect of blockking up detection mechanism is that the pressure differential between defeated oil pipe 11 and the back flow 5 on the main filtration section of thick bamboo 1 is detected to utilizing first pressure differential table 4, utilize second pressure differential table 9 to detect the pressure differential between defeated oil pipe 11 and the back flow 5 on the reserve filtration section of thick bamboo 10, when filter core 12 takes place to block up, pressure differential between defeated oil pipe 11 and the back flow 5 can the grow, when the pressure differential that first pressure differential table 4 or second pressure differential table 9 detected is greater than inside set value, can be to the 15 signals of alarm that correspond, thereby remind the staff to carry out the activestandby switch, the lubrication efficiency of lubricating oil is improved, convenient to use person uses.

Above-mentioned utility model discloses a fluid filtration system of steam turbine, when taking place to block up at the inside filter core 12 of main filtration cartridge 1, the pressure difference value between defeated oil pipe 11 on the main filtration cartridge 1 and the back flow 5 can increase, when the pressure difference value that first pressure difference table 4 detected is greater than inside setting value, can be to the 15 signals of alarm directly over, make alarm 15 report to the police, improve the staff and carry out the activestandby switch, the staff rotates two tee bend switching-over valves 7, make lubricating oil flow to be equipped with cartridge filter 10 and from being equipped with cartridge filter 10 outflow.

When the staff can not in time handle, the inside pressure of main cartridge filter 1 lasts and rises, and when pressure was greater than 16 inside set values of pressure valve, pressure valve 16 opened, made lubricating oil directly enter into connecting cylinder base 3 and back flow 5 inside, avoided 1 inside pressure value of main cartridge filter too big, improved lubricated efficiency simultaneously.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention.

Claims

1. An oil filtering system of a steam turbine comprises a main filter cartridge (1), a standby filter cartridge (10), a cartridge cover (13), two three-way reversing valves (7), an oil inlet pipe (14), two oil delivery pipes (11), an oil outlet pipe (6), two return pipes (5), a filtering mechanism and a blockage detection mechanism, wherein the cartridge cover (13) is installed at the upper ends of the main filter cartridge (1) and the standby filter cartridge (10), and is characterized in that the two three-way reversing valves (7) are arranged between the main filter cartridge (1) and the standby filter cartridge (10) one on top of the other, the oil inlet pipe (14) and the two oil delivery pipes (11) are respectively installed on the three-way reversing valves (7) located above, one ends of the two oil delivery pipes (11) far away from the three-way reversing valves (7) are respectively installed on the side walls of the main filter cartridge (1) and the standby filter cartridge (10), the oil outlet pipe (6) and the two return pipes (5) are respectively installed on the three-way reversing valves (7) located below, and one ends of the two return pipes (5) far away from the three-way reversing valves (7) are respectively installed on the side walls of the main filter cartridge (1) and the main filter cartridge (10);

the filtering mechanism is arranged inside the main filtering cylinder (1) and the standby filtering cylinder (10) and is used for filtering lubricating oil;

the blockage detection mechanism is arranged between the oil delivery pipe (11) and the return pipe (5) and used for detecting whether the filtering mechanism is blocked or not by utilizing pressure difference and giving an alarm.

2. The oil filtering system of the steam turbine according to claim 1, wherein the filtering mechanism comprises a plurality of connecting rods (2), a pressure valve (16), a filter element (12) and two connecting cylinder bases (3), the two connecting cylinder bases (3) are respectively and vertically arranged inside the main filtering cylinder (1) and the standby filtering cylinder (10), one end, away from the three-way reversing valve (7), of the return pipe (5) is connected to the bottom of the connecting cylinder base (3), the connecting rods (2) are vertically arranged on the upper end of the side wall of the connecting cylinder base (3) in a circumferential array manner, the pressure valve (16) is installed at the upper end of the connecting rods (2), the filter element (12) is sleeved on the side wall of the connecting rods (2), the upper end of the filter element (12) is tightly attached to the side wall of the pressure valve (16), and the lower end of the filter element (12) is tightly attached to the side wall of the connecting cylinder base (3).

3. The oil filtering system of the steam turbine according to claim 2, wherein the blockage detection mechanism comprises a first pressure difference meter (4), a second pressure difference meter (9) and two connecting pipes (8), wherein the two connecting pipes (8) are respectively vertically arranged on two sides of the three-way reversing valve (7), the upper end of each connecting pipe (8) is arranged on the oil conveying pipe (11), the lower end of each connecting pipe (8) is arranged on the return pipe (5), the first pressure difference meter (4) is arranged on the connecting pipe (8) between the main filter cartridge (1) and the three-way reversing valve (7), the second pressure difference meter (9) is arranged on the connecting pipe (8) between the standby filter cartridge (10) and the three-way reversing valve (7), and the alarm (15) is arranged at the upper end of the oil conveying pipe (11) right above the first pressure difference meter (4) and the second pressure difference meter (9).

4. Oil filter system for steam turbines according to claim 1, characterized in that said cover (13) is provided with a seal for preventing the leakage of hydraulic oil.

5. Oil filter system for steam turbines according to claim 2, characterized in that the lower end of the filter element (12) is fitted with magnets for the abutment of the filter element (12) against the connecting cylinder seat (3).

6. Oil filter system for steam turbines according to claim 3, characterized in that said alarm (15) is provided with flashing lights for the detection of the operator.