A gas turbine rotor with telemetry

Abstract

The application discloses a gas turbine rotor with a telemetry function, and relates to the field of gas turbines, in particular to a gas turbine rotor with a telemetry function. The gas turbine rotor comprises a turbine rotor, lead wires, lead wire rings and a telemetry system. The turbine rotor comprises multiple turbine disks. Multiple lead wire rings are arranged at the central holes of the turbine disks, and the axes of the lead wire rings coincide with the axis of the gas turbine. The tail lead wire ring is connected with the telemetry system. The lead wires pass through the lead wire rings and are connected with the telemetry system. The gas turbine rotor has the advantages that the lead wires of the telemetry measuring points can be protected by the assembled lead wire rings and lead wire pipes, and the lead wire holes do not need to be directly opened on the rotor disks, and the processing and installation are convenient.

Description

Technical Field

[0001] This invention relates to the field of gas turbines, and more specifically to a gas turbine rotor with telemetry capabilities. Background Technology

[0002] When developing new types of gas turbines, in order to ensure the safety of the experiment and obtain important test data on the gas turbine rotor, it is necessary to measure the temperature, vibration and pressure parameters at key locations on the rotor blades and disk.

[0003] Gas turbine rotors are rotating components, making them unsuitable for conventional measurement methods. Telemetry is a technique that transmits short-range measurements of an object's parameters to a distant measurement station, enabling long-distance measurement. The results are then transmitted to a receiving location for recording, display, and processing. Telemetry is a highly integrated technology with excellent tracking and remote control capabilities, and its applications are widespread. It is a comprehensive technology that utilizes sensing, communication, and data processing technologies to transmit short-range measurements of an object's parameters to a distant measurement station for long-distance measurement.

[0004] However, in gas turbine rod-coupled rotors, the leads for telemetry points are often made by drilling holes in the rotor disc. Since the lead holes are very small, on the one hand, the stress concentration is significant, and the stress in the hole is large, which often reduces the service life of the disc; on the other hand, if the lead holes are very long, it is difficult or impossible to drill them.

[0005] In summary, there is an urgent need for a telemetry system that can stably and accurately measure information from various parts of the gas turbine without damaging its structure. Summary of the Invention

[0006] The purpose of this invention is to provide a gas turbine rotor with telemetry function to address the problems mentioned above.

[0007] The technical solution adopted in this invention is as follows:

[0008] A gas turbine rotor with telemetry function includes: a turbine rotor, lead wires, lead wire rings and a telemetry system. The turbine rotor includes a multi-stage turbine disk, and multiple lead wire rings are arranged at the central hole of the turbine disk, with the axis of the lead wire rings coinciding with the axis of the gas turbine. The lead wire ring at the tail end is connected to the telemetry system, and the lead wires pass through the lead wire rings and are connected to the telemetry system.

[0009] Furthermore, the lead ring includes an inner ring and a cover plate, with the cover plate fitted onto the inner ring, and the inner ring and the cover plate connected by bolts.

[0010] Furthermore, lead grooves are arranged in a circumferential array within the lead ring.

[0011] Furthermore, half of the lead groove is located in the inner ring and half in the cover plate. The cover plate is fitted onto the inner ring to form a complete lead groove.

[0012] Furthermore, the lead rings between the multi-stage turbine discs are equipped with lead tubes, which are used to connect the lead grooves in two adjacent lead rings and allow the lead wires to pass through.

[0013] Furthermore, the lead ring is provided with a side hole for installing the lead tube.

[0014] Furthermore, it includes a lead reel, and the tail lead ring is connected to a telemetry system via the lead reel. The lead reel is used to centrally connect the leads inside the lead ring to the telemetry device.

[0015] Furthermore, the telemetry system includes: a telemetry transmitter, a telemetry receiver, and a sealing cylinder. The sealing cylinder is sleeved on the rear end shaft of the turbine rotor and is detachably connected to the gas turbine cylinder. The telemetry transmitter is located inside the sealing cylinder, and the telemetry receiver is located inside the cylinder wall of the sealing cylinder.

[0016] Furthermore, a sealing ring is provided between the sealing cylinder and the rear shaft of the turbine rotor.

[0017] Furthermore, the sealing cylinder is equipped with a cooling air inlet pipe.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] (1) The leads of the telemetry points can be protected by assembled lead rings and lead tubes. It has the advantages of not needing to directly open lead holes on the rotor disc and being easy to process and install.

[0020] (2) Lead rings are used to route the leads, which is flexible and the installation and testing results are stable and reliable.

[0021] (3) A sealed cylinder structure is adopted to seal the telemetry system and prevent external factors from affecting the transmission of its measurement signals. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a partial view of the lead ring of the present invention;

[0024] Figure 3 This is a side view of the lead loop of the present invention;

[0025] Figure 4 This is a partial view of the tail lead ring of the present invention;

[0026] Figure 5 This is a side view of the tail lead ring of the present invention.

[0027] The markings in the diagram are: 1 - turbine rotor, 2 - lead wire, 3 - lead wire ring, 4 - telemetry system, 5 - turbine disc, 6 - inner ring, 7 - cover plate, 8 - lead wire groove, 9 - lead wire tube, 10 - side hole, 11 - lead wire disc, 12 - telemetry transmitter, 13 - telemetry receiver, 14 - sealing cylinder, 15 - gas turbine cylinder, 17 - sealing ring, 16 - cooling gas inlet pipe, 18 - mounting plate.

[0028] Specific examples

[0029] The present invention will now be described in detail with reference to the accompanying drawings.

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] Example 1

[0032] In this embodiment, as Figure 1 As shown, a gas turbine rotor with telemetry function includes: a turbine rotor, lead wires, lead wire rings and a telemetry system. The turbine rotor includes multiple turbine discs, and each disc is spaced apart.

[0033] Multiple lead rings are arranged at the center hole of the turbine disk, and the axis of the lead rings coincides with the axis of the gas turbine. Each stage of the disk corresponds to one lead ring. The lead rings are cylindrical and arranged along the axis of the gas turbine.

[0034] The tail end of the turbine disk is connected to a telemetry system, and the lead wire passes through the lead wire and is connected to the telemetry system. Each stage of the turbine disk is equipped with a lead wire ring, and the lead wire ring of the last stage is connected to the telemetry system. The telemetry measurement points on the blades and the disk are connected to the telemetry system through the lead wire ring, so that the signals from the blades or the disk are transmitted to the telemetry system. This eliminates the need to directly drill lead wire holes on the rotor disk, prevents stress concentration, ensures stable operation of the gas turbine unit, and facilitates processing and installation.

[0035] Furthermore, the lead ring includes an inner ring and a cover plate. The cover plate is fitted onto the inner ring, and the inner ring and the cover plate are connected by bolts. By setting the inner ring and the cover plate, the lead wire can be effectively fixed on the inner ring. The cover plate is fitted onto the inner ring by fitting. Bolt holes are set at corresponding positions on the cover plate and the inner ring, and the inner ring and the cover plate are connected by bolts. The advantage of bolt connection is that the cover plate and the inner ring can be detached, and bolt connection can effectively tighten the connection between the inner ring and the cover plate, improving the stability of the telemetry system.

[0036] Furthermore, the inner circumferential array of the lead ring has lead grooves. Since the lead wires are divided into multiple groups, in order to prevent the weight from being concentrated on one side and affecting the normal operation of the gas turbine, lead grooves are arranged in the inner circumferential array of the lead ring. The lead wires pass through the lead grooves to the telemetry system to transmit telemetry signals from the blades or the turbine disk, thereby improving the operational stability of the gas turbine.

[0037] Specifically, the lead wire groove adopts a U-shaped structure design, with the opening of the lead wire groove facing away from the axis of the lead wire ring. In this way, when inserting the lead wire, it can be directly put into the lead wire groove from the opening, and then the cover plate is put on, which can effectively prevent the lead wire from falling off, making the transmission and operation of the gas turbine telemetry signal more stable.

[0038] Furthermore, the lead rings between the multi-stage turbine disks are equipped with lead tubes. The lead tubes are used to connect the lead slots in two adjacent lead rings and allow the lead wires to pass through. In order to prevent the lead wires between the multi-stage turbine disks from being exposed and affecting the signal transmission of the lead wires, lead tubes are added. The lead tubes are used to connect the lead slots in two adjacent lead rings. The lead wires pass through the lead tubes to another lead ring. The lead tubes are set between the lead slots of two adjacent lead rings, which can make the signal transmission of the lead wires more stable and prevent the lead wires from being exposed and interfering with the quality of telemetry signals.

[0039] Furthermore, the lead tube is provided with side holes for introducing the lead wire; this facilitates the installation of the lead tube and the introduction of the lead wire.

[0040] The lead pipe is also equipped with side holes. Since the lead wires need to extend from various parts of the gas turbine to collect signals, the positions where they enter the lead ring are not the same. Therefore, side holes are opened on the side of the lead pipe so that the lead wires at the corresponding positions can enter the lead pipe through the side holes and finally converge into the telemetry system. The advantage of this setting is that it allows the lead wires at different positions to enter the lead ring through the shortest path, which greatly reduces the exposed length of the lead wires and improves the stability of the telemetry system data transmission.

[0041] Furthermore, it includes a lead reel, and the tail lead ring is connected to a telemetry system via the lead reel. The lead reel is used to concentrate the leads inside the lead ring and connect them to the telemetry device. The lead reel is set with a conical structure and is provided with lead grooves to gather the leads arranged along the circumference of the lead ring towards the axis. While gathering the leads, it can also further protect the leads and make the telemetry signals transmitted by the leads more stable.

[0042] Furthermore, the telemetry system includes: a telemetry transmitter, a telemetry receiver, and a sealing cylinder. The sealing cylinder is fitted onto the rear end shaft of the turbine rotor and is detachably connected to the gas turbine cylinder. The telemetry transmitter is located inside the sealing cylinder, and the telemetry receiver is located inside the cylinder wall. The sealing cylinder, fitted onto the rear end shaft of the turbine rotor, covers the entire telemetry system, isolating it from the outside world and ensuring stable telemetry signal transmission. The telemetry receiver, located inside the cylinder wall, prevents the sealing cylinder from blocking the telemetry receiver from receiving external signals.

[0043] Specifically, the telemetry transmitter is mounted on a mounting plate, which is bolted to the tail end turbine disc.

[0044] Furthermore, a sealing ring is provided between the sealing cylinder and the rear shaft of the turbine rotor. The sealing ring can effectively keep the telemetry system sealed from the outside world, block the interference of the external environment on the telemetry system, and make the telemetry signal transmission more stable.

[0045] Furthermore, the sealing cylinder is equipped with a cooling gas inlet pipe, which is arranged along the axis of the gas turbine. Since the internal operating temperature of the gas turbine is high, which may cause the telemetry system to fail, cooling gas is introduced into the telemetry system to maintain the optimal operating temperature of the telemetry system and ensure accurate transmission of telemetry signals.

[0046] Example 2

[0047] Half of the lead wire groove is located in the inner ring and half is located in the cover plate. The cover plate is fitted onto the inner ring to form a complete lead wire groove. This arrangement can more effectively fix the lead wire and make the telemetry signal transmission more stable.

[0048] The above description is merely a preferred embodiment of the invention and is not intended to limit the invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A gas turbine rotor with telemetry function, characterized in that: include: The turbine rotor includes a turbine rotor, lead wires, lead wire rings, and a telemetry system. The turbine rotor includes a multi-stage turbine disk, and multiple lead wire rings are arranged at the center hole of the turbine disk. Each stage of the disk corresponds to one lead wire ring, and the axis of the lead wire ring coincides with the axis of the gas turbine. The lead wire ring at the tail end is connected to the telemetry system, and the lead wire passes through the lead wire ring and is connected to the telemetry system. The lead ring includes an inner ring and a cover plate, the cover plate being sleeved on the inner ring, and the inner ring and the cover plate being connected by bolts; The lead ring has lead grooves arranged in a circumferential array inside the lead ring; The lead groove is located half in the inner ring and half in the cover plate. The cover plate is fitted onto the inner ring to form a complete lead groove. The lead rings between the multi-stage turbine disks are provided with lead tubes, which are used to connect the lead grooves in two adjacent lead rings and allow the lead wires to pass through.

2. A gas turbine rotor with telemetry function according to claim 1, characterized in that: The lead ring is provided with a side hole for installing the lead tube.

3. A gas turbine rotor with telemetry function according to claim 1, characterized in that: It includes a lead reel, and the tail lead ring is connected to a telemetry system via the lead reel. The lead reel is used to centrally connect the leads inside the lead ring to the telemetry device.

4. A gas turbine rotor with telemetry function according to claim 1, characterized in that: The telemetry system includes a telemetry transmitter, a telemetry receiver, and a sealing cylinder. The sealing cylinder is sleeved on the rear end shaft of the turbine rotor and is detachably connected to the gas turbine cylinder. The telemetry transmitter is located inside the sealing cylinder, and the telemetry receiver is located inside the cylinder wall of the sealing cylinder.

5. A gas turbine rotor with telemetry function according to claim 4, characterized in that: A sealing ring is provided between the sealing cylinder and the rear shaft of the turbine rotor.

6. A gas turbine rotor with telemetry function according to claim 4, characterized in that: The sealing cylinder is equipped with a cooling air inlet pipe.

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