CN111307466A - Magnetic Metal Chip Annunciators for Gas Turbines - Google Patents

Abstract

Be applied to gas turbine's magnetic force metal fillings signal ware belongs to gas turbine lubricating system technical field. The invention aims to solve the problem that the existing magnetic metal chip annunciator cannot be disassembled on line. The valve comprises a valve, a bracket, a spring, a valve shell and a signal device sensor, wherein four round holes are uniformly formed in the side wall of the valve shell along the circumferential direction; the valve comprises a sliding section and a bottom end face; the valve and the annunciator sensor are disposed within the valve housing; the valve bottom end surface is jointed with the inner end port of the annunciator sensor through a spring at the positions corresponding to the four round holes; the valve is supported by a support arranged at the port of the head end of the valve shell, and the sliding section can slide along the support and the valve shell; when the annunciator sensor is detached from the valve casing, the valve can block four round holes arranged on the side wall of the valve casing under the action of the force of the spring. The invention is used for catching metal chips in lubricating oil discharged from a gas turbine and a transmission case.

Description

Magnetic Metal Chip Annunciators for Gas Turbines

technical field

The invention relates to a magnetic metal chip signal device applied to a gas turbine, and belongs to the technical field of a gas turbine lubrication system.

Background technique

The gas turbine lubrication system needs to ensure that the bearing components and the gear meshing parts of the gas turbine are lubricated and cooled under all operating conditions of the gas turbine.

When the bearing or gear of the gas turbine fails and wears out, a large amount of metal chips will be produced and discharged together with the lubricating oil. In this case, if the gas turbine continues to run, it will cause more serious wear and tear, resulting in greater economic losses. A magnetic metal chip signal device is installed on the oil return pipeline of each bearing cavity of the gas turbine, which can absorb the metal chips in the lubricating oil and send a signal to the gas turbine control system. By analyzing the shape and composition of the metal chips, the degree of wear and wear can be roughly judged. Therefore, the failure of the gas turbine can be detected early and large economic losses can be avoided.

The existing magnetic metal chip annunciator cannot be disassembled online, and the working reliability is poor.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problem that the existing magnetic metal chip signal device cannot be disassembled online, and provides a magnetic metal chip signal device applied to a gas turbine.

The magnetic metal chip annunciator applied to a gas turbine according to the present invention includes a valve 1, a bracket 2, a spring 3, a valve housing 4 and an annunciator sensor 5,

Four circular holes are evenly arranged on the side wall of the valve shell 4 along the circumferential direction;

The valve 1 includes a sliding section and a bottom end surface; the valve 1 and the annunciator sensor 5 are arranged in the valve housing 4; the bottom end surface of the valve 1 and the inner end port of the annunciator sensor 5 pass through a spring at a position corresponding to the four circular holes 3 engaging;

The valve 1 is supported by the bracket 2 provided at the head end port of the valve shell 4, and the sliding section can slide along the bracket 2 and the valve shell 4; The four circular holes provided on the side wall of the valve housing 4 can be blocked under the action of the force.

According to the magnetic metal chip signal device applied to a gas turbine according to the present invention, it further comprises a No. 1 sealing ring 6 and a No. 2 sealing ring 7,

A No. 1 sealing ring 6 is set between the end of the valve shell 4 and the shell of the annunciator sensor 5, and a No. 2 sealing ring is set between the middle section of the valve shell 4 near the four circular holes and the shell of the annunciator sensor 5 7.

According to the magnetic metal chip annunciator applied to a gas turbine according to the present invention, the annunciator sensor 5 includes a No. 1 nut 5A, a No. 2 nut 5B, two plugs 5C, a casing 5D, an insulating material filling 5E and two magnets 5F,

The end of the valve housing 4 and the housing 5D are connected and fixed by the No. 1 nut 5A, the outer thread is provided on the segment where the housing 5D protrudes from the end of the valve housing 4, and the No. 2 nut 5B is connected to the outer surface of the segment, and the second nut 5B is connected to the outer surface of the segment. When the No. 5B nut is tightened, the spring 3 can be compressed;

The magnets 5F are arranged in the casing 5D and are located on the inner port side of the casing 5D. Each magnet 5F is connected to a plug 5C to form a sensing element. The magnet 5F attaches the two plugs 5C by attracting metal chips. The connection forms a closed loop, and the plug 5C corresponds to the outer port side of the housing 5D;

An insulating material filler 5E is filled between the sensing element and the housing 5D.

Advantages of the present invention: The present invention, as an accessory of the gas turbine lubricating system used in the shipbuilding industry, can be used to capture the metal chips in the lubricating oil discharged from the gas turbine and the transmission case, perform real-time fault detection on the gas turbine, and discover the faults of the gas turbine and the transmission case early. The invention can be installed on the oil return pipeline of each bearing cavity of the gas turbine, so that the failure of the gas turbine can be found early, thereby avoiding large economic losses.

When the bearing or gear of the gas turbine is faulty and worn, the generated metal chips are discharged with the lubricating oil to the oil return pipeline of the bearing cavity, and the lubricating oil with metal chips enters the metal chip signal device valve shell screwed in the threaded hole of the pipe wall or the lubricating oil chamber The four round holes in the annunciator sensor can be adsorbed by the magnet of the annunciator sensor, so that the circuit of the annunciator sensor is closed, and a signal is sent to the gas turbine control system that there are metal chips in the lubricating oil.

The magnetic metal chip signal device of the invention can realize online disassembly through the connection of springs, thereby improving equipment reliability, ensuring early detection of gas turbine failure and wear, reducing gas turbine operation risks, and improving gas turbine operation safety.

Description of drawings

1 is a schematic structural diagram of a magnetic metal chip signal device applied to a gas turbine according to the present invention;

Figure 2 is a schematic diagram of the structure of the annunciator sensor.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

Embodiment 1: The present embodiment will be described below with reference to FIG. 1 . The magnetic metal chip annunciator applied to a gas turbine described in this embodiment includes a valve 1 , a bracket 2 , a spring 3 , a valve housing 4 and an annunciator sensor 5 .

Four circular holes are evenly arranged on the side wall of the valve shell 4 along the circumferential direction;

The valve 1 includes a sliding section and a bottom end surface; the valve 1 and the annunciator sensor 5 are arranged in the valve housing 4; the bottom end surface of the valve 1 and the inner end port of the annunciator sensor 5 pass through a spring at a position corresponding to the four circular holes 3 engaging;

The valve 1 is supported by the bracket 2 provided at the head end port of the valve shell 4, and the sliding section can slide along the bracket 2 and the valve shell 4; Under the action of the force, the four round holes set on the side wall of the valve shell 4 can be blocked to ensure that the lubricating oil does not leak.

The structure of spring 3 reset can ensure that the metal chip annunciator can be disassembled online without oil leakage.

The annunciator sensor 5 will send an alarm signal to the gas turbine control system after adsorbing metal chips and connecting into a closed loop. Furthermore, by analyzing the shape and composition of the metal scraps, the degree of wear and the parts of wear can be roughly judged, so that the failure of the gas turbine can be found early and large economic losses can be avoided.

Further, as shown in FIG. 1 , the No. 1 sealing ring 6 and the No. 2 sealing ring 7 are also included,

A No. 1 sealing ring 6 is set between the end of the valve shell 4 and the shell of the annunciator sensor 5, and a No. 2 sealing ring is set between the middle section of the valve shell 4 near the four circular holes and the shell of the annunciator sensor 5 7.

Still further, as shown in FIG. 2 , the annunciator sensor 5 includes a No. 1 nut 5A, a No. 2 nut 5B, two plugs 5C, a housing 5D, an insulating material filler 5E and two magnets 5F,

The end of the valve housing 4 and the housing 5D are connected and fixed by the No. 1 nut 5A, the outer thread is provided on the segment where the housing 5D protrudes from the end of the valve housing 4, and the No. 2 nut 5B is connected to the outer surface of the segment, and the second nut 5B is connected to the outer surface of the segment. When the No. 5B nut is tightened, the spring 3 can be compressed;

The magnets 5F are arranged in the casing 5D and are located on the inner port side of the casing 5D. Each magnet 5F is connected to a plug 5C to form a sensing element. The magnet 5F attaches the two plugs 5C by attracting metal chips. The connection forms a closed loop, and the plug 5C corresponds to the outer port side of the housing 5D;

An insulating material filler 5E is filled between the sensing element and the housing 5D.

The magnet 5F can effectively absorb the metal chips in the working lubricating oil.

In this embodiment, the metal chip signal device is connected to the oil return pipeline of each bearing cavity of the gas turbine. The valve 1 can compress the spring 3 when the second nut 5B of the signal sensor sensor 5 is tightened, so that the lubricating oil enters through the circular hole. In the inner cavity of the annunciator sensor 5, when metal chips in the lubricating oil are attracted by the magnet inside the annunciator sensor 5 and the two plugs 5C are connected into a closed loop, an alarm signal can be issued. Unscrew the No. 2 nut 5B, and the valve 1 blocks the four round holes set on the side wall of the valve shell 4 under the action of the spring 3 to ensure that the lubricating oil in the lubricating oil system of the gas turbine does not leak.

In this embodiment, when the bearing or gear of the gas turbine is faulty and worn, the generated metal chips are discharged with the lubricating oil to the oil return pipeline of the bearing cavity, and the lubricating oil with metal chips enters the metal threaded in the threaded hole of the pipe wall or the lubricating oil chamber. The metal chips in the four round holes of the chip annunciator are adsorbed by the magnet 5F of the annunciator sensor 5. After the magnet 5F absorbs the metal chips, the alarm circuit set inside the annunciator sensor 5 will be closed, and the alarm circuit can be sent to the gas turbine. The control system issues an alarm signal that there are metal chips in the oil. Further, the fault diagnosis of the gas turbine can be performed, and the operation safety of the gas turbine can be improved.

Although the invention has been described herein with reference to specific embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and other arrangements may be devised without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in different ways than are described in the original claims. It will also be appreciated that features described in connection with a single embodiment may be used in other described embodiments.

Claims (3)

1. A magnetic metal filing annunciator applied to a gas turbine is characterized by comprising a valve (1), a bracket (2), a spring (3), a valve shell (4) and an annunciator sensor (5),

four round holes are uniformly formed in the side wall of the valve shell (4) along the circumferential direction;

the valve (1) comprises a sliding section and a bottom end face; the valve (1) and the annunciator sensor (5) are arranged in the valve shell (4); the bottom end face of the valve (1) is jointed with the inner end port of the annunciator sensor (5) at positions corresponding to the four round holes through a spring (3);

the valve (1) is supported by a support (2) arranged at the port of the head end of the valve casing (4), and the sliding section can slide along the support (2) and the valve casing (4); when annunciator sensor (5) is dismantled in by valve casing (4), four round holes that set up on valve casing (4) lateral wall can be blocked in valve (1) under the effect of force of spring (3).

2. The magnetic metal chip annunciator applied to a gas turbine as claimed in claim 1, further comprising a first seal ring (6) and a second seal ring (7),

set up sealing ring (6) between the terminal of valve casing (4) and the casing of annunciator sensor (5), set up No. two sealing rings (7) on valve casing (4) middle section between the casing that is close to four round hole departments and annunciator sensor (5).

3. Magnetic metal filings signaler to be applied to a gas turbine according to claim 1 or 2, characterised in that said signaler sensor (5) comprises a first nut (5A), a second nut (5B), two plugs (5C), a casing (5D), a filling of insulating material (5E) and two magnets (5F),

the tail end of the valve shell (4) is fixedly connected with the shell (5D) through a first nut (5A), an external thread is arranged on a section of the shell (5D) extending out of the tail end of the valve shell (4), a second nut (5B) is connected to the outer surface of the section, and the spring (3) can be compressed when the second nut (5B) is screwed down;

the magnets (5F) are arranged in the shell (5D) and are positioned on the inner end port side of the shell (5D), each magnet (5F) is correspondingly connected with one plug (5C) to form a sensing part, the two plugs (5C) are connected by the magnets (5F) through adsorbing metal scraps to form a closed loop, and the plugs (5C) correspond to the outer end port side of the shell (5D);

an insulating material filler (5E) is filled between the sensing piece and the shell (5D).

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