Exhaust temperature monitoring device of gas turbine

Abstract

The invention discloses a gas turbine exhaust temperature monitoring device which comprises a temperature probe, a sleeve is arranged on the periphery of the temperature probe in a sleeving mode, a mounting channel for the temperature probe to penetrate through is formed in the sleeve, one end of the sleeve is fixedly connected with a transverse pipe communicated with the mounting channel, and the other end of the sleeve is fixedly connected with the transverse pipe. The tail end of the temperature probe extends into the transverse pipe from the installation channel, the periphery of the temperature probe is sleeved with an armor, the tail end, away from the transverse pipe, of the temperature probe is connected with a cable, and the communication position of the installation channel and the transverse pipe is arranged in a contracting mode and matched with the end of the armor. The end, away from the transverse pipe, of the armor is connected with a stretching assembly, the periphery of the end, away from the temperature probe, of the cable is fixedly sleeved with a cable sleeve, and the periphery of the end of the cable sleeve is connected with an adjusting assembly. According to the invention, the fitting stability between the armor and the opening of the mounting channel can be conveniently maintained during mounting and use, the shaking of the temperature probe in the blowing process is avoided, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of gas turbine exhaust temperature testing technology, specifically a gas turbine exhaust temperature monitoring device. Background Technology

[0002] Exhaust gas temperature is a direct reflection of the heat carried away by the exhaust gas after a gas turbine has performed its work. Under given load and intake conditions, an abnormally high exhaust gas temperature usually indicates a decrease in the internal efficiency of the gas turbine (e.g., fouling or wear of the compressor or turbine blades), resulting in more fuel energy being discharged as waste heat and reduced power generation efficiency.

[0003] For power plants like 9HA.01 that utilize combined cycle power systems, the exhaust gas from the gas turbine directly feeds into a waste heat boiler to generate steam, which then drives the turbine to generate electricity. The exhaust gas temperature and flow rate together determine the steam production capacity of the waste heat boiler and the overall efficiency of the combined cycle. Accurate monitoring of the exhaust gas temperature is fundamental to optimizing the performance of the entire combined cycle system.

[0004] The temperature element is installed inside the casing, while the temperature probe is exposed. This location is inside the equipment, which contains the gas produced by natural gas combustion. During equipment operation, the airflow causes the temperature probe to vibrate at high frequency. As a result, the temperature probe and the casing will collide due to this vibration, frequently leading to breakage over prolonged use. Summary of the Invention

[0005] The purpose of this invention is to provide an exhaust temperature monitoring device for a gas turbine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An exhaust temperature monitoring device for a gas turbine includes a temperature probe, a sleeve surrounding the temperature probe, an installation channel through which the temperature probe passes, a horizontal pipe fixedly connected to one end of the sleeve and communicating with the installation channel, the end of the temperature probe extending from the installation channel into the horizontal pipe, an armor covering the temperature probe, a cable connected to the end of the temperature probe away from the horizontal pipe, a contracted section at the connection between the installation channel and the horizontal pipe that adapts to the end of the armor, a tensioning component connected to the end of the armor away from the horizontal pipe, a cable sleeve fixedly covering the end of the cable away from the temperature probe, and an adjustment component connected to the end of the cable sleeve.

[0007] As a further aspect of the present invention: a tapered section is provided at the connection between the installation channel and the horizontal tube, and the end of the armor is also tapered, with the two correspondingly adapted to each other.

[0008] As a further aspect of the present invention: a mounting gasket is fixedly provided on the outer periphery of the other end of the sleeve, the cable sleeve is fixedly passed through the end of the sleeve and the middle of the mounting gasket, and a fixing bolt sleeve is threadedly connected to the end of the cable sleeve away from the adjustment component.

[0009] As a further embodiment of the present invention: the adjusting component includes a washer and a sleeve fixedly connected to the outer periphery of the cable sleeve, the sleeve being movably fitted on one side of the washer, and a threaded tube that is threadedly connected to the center of the washer and is threadedly engaged with the tensioning component, the threaded tube being fitted around the outer periphery of the cable.

[0010] As a further aspect of the present invention: guide grooves extending along the axial direction of the threaded tube are symmetrically embedded on both sides of the surface of the threaded tube, and a sliding block that is slidably adapted and connected in the guide groove is protruding from the inner side of the opening of the sleeve.

[0011] As a further aspect of the present invention: the outer edge of the washer extends toward the sleeve, and the outer edge of the sleeve is slidably fitted around the edge of the washer.

[0012] As a further aspect of the present invention: a bearing sleeve is rotatably connected to the inner side of the washer ring, and the bearing sleeve is elastically connected to the sleeve via a telescopic rod.

[0013] As a further aspect of the present invention: a positioning rod is rotatably connected to the opposite side of the bearing sleeve and the washer edge, and a flexible pad is provided at the opposite end of the positioning rod and the washer edge. A transmission connecting rod is connected between the sleeve and the positioning rod, and the two ends of the transmission connecting rod are rotatably connected to the sleeve and the positioning rod respectively.

[0014] As a further aspect of the present invention: when the sleeve edge is completely fitted around the edge of the washer and the positioning rod is in a horizontal state, the flexible pad at the end of the positioning rod and the inner edge of the washer are pressed together.

[0015] As a further aspect of the present invention: the tensioning assembly includes a collar fitted to the end of the armor, the surface of the collar being inlaid with a silicone pad, the outer periphery of the end of the threaded tube being threadedly fitted with a threaded ring, and multiple sets of connecting rods being connected between the collar and the threaded ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: When the adjusting component rotates, it drives the stretching component to move relative to the cable sleeve. The distance between the armor and the cable sleeve can be controlled by the adjusting component, facilitating the pushing of the armor to a position where it can maintain a tight fit with the installation channel opening after maintenance of the armor and temperature probe. The lengths of the stretching component, the cable, and the armor can all be adjusted according to actual application needs. The stretching and adjusting components are designed to prevent the armor from failing to fit tightly against the installation channel. This design facilitates the maintenance of stable contact between the armor and the installation channel opening during installation and use, preventing the temperature probe from swaying during airflow and improving its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a partial cross-sectional view of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure for installing the gasket in this invention.

[0020] Figure 4 This is a schematic diagram of the combined structure of the temperature probe, armor, cable sleeve, tensioning assembly, and adjustment assembly in this invention.

[0021] Figure 5 This is a schematic diagram of the temperature probe, armor, and cable sleeve in this invention.

[0022] Figure 6 This is a schematic diagram of the structure of the fixing bolt sleeve in this invention.

[0023] Figure 7 This is a schematic diagram of the adjustment component in this invention.

[0024] Figure 8 This is a cross-sectional view of the washer ring and sleeve in this invention.

[0025] Figure 9 for Figure 8 A magnified structural diagram of region A in the middle.

[0026] Figure 10 This is a schematic diagram of the positioning rod in this invention.

[0027] Figure 11 This is a schematic diagram of the structure of the stretching component in this invention.

[0028] In the diagram: 1-Temperature probe, 11-Cable, 12-Armor, 13-Cable sleeve, 14-Fixing bolt sleeve, 2-Sleeve, 21-Horizontal tube, 22-Mounting gasket, 23-Mounting channel, 3-Tension assembly, 31-Collar, 32-Threaded ring, 33-Connecting rod, 4-Adjusting assembly, 41-Washer ring, 4101-Bearing sleeve, 4102-Telescopic rod, 4103-Positioning rod, 4104-Transmission connecting rod, 42-Sleeve, 4201-Sliding block, 43-Threaded tube, 4301-Guide groove. Detailed Implementation

[0029] Please see Figures 1-3 In this embodiment of the invention, an exhaust temperature monitoring device for a gas turbine includes a temperature probe 1. A sleeve 2 is fitted around the temperature probe 1, and an installation channel 23 is provided in the sleeve 2 for the temperature probe 1 to pass through. One end of the sleeve 2 is fixedly connected to a horizontal pipe 21 communicating with the installation channel 23. The end of the temperature probe 1 extends from the installation channel 23 into the horizontal pipe 21. A mounting gasket 22 is fixedly fitted around the other end of the sleeve 2. An armor 12 is fitted around the temperature probe 1. A cable 11 is connected to the end of the horizontal tube 21. The mounting channel 23 and the horizontal tube 21 are tapered and adapted to the end of the armor 12. Preferably, the mounting channel 23 and the horizontal tube 21 are tapered, and the end of the armor 12 is also tapered. The two are adapted to each other. When the airflow blows towards the temperature probe 1 through the horizontal tube 21, the temperature probe 1 will not shake because of the adaptation between the end of the armor 12 and the mounting channel 23. This improves the safety and stability of the temperature probe 1.

[0030] Furthermore, such as Figures 4-6 As shown, a tensioning component 3 is connected to the end of the armor 12 furthest from the horizontal tube 21. A cable sleeve 13 is fixedly fitted around the end of the cable 11 furthest from the temperature probe 1. An adjusting component 4 is connected to the outer periphery of the end of the cable sleeve 13. When the adjusting component 4 rotates, it drives the tensioning component 3 to move relative to the cable sleeve 13. The distance between the armor 12 and the cable sleeve 13 can be controlled by the adjusting component 4, making it convenient to push the armor 12 to a state that can maintain a tight fit with the opening of the installation channel 23 after maintenance of the armor 12 and the temperature probe 1. The lengths of the tensioning component 3, the cable 11, and the armor 12 can all be adjusted according to actual application needs. The tensioning component 3 and the adjusting component 4 are designed to prevent the armor 12 from failing to fit tightly against the opening of the installation channel 23, thus losing its intended purpose.

[0031] The cable sleeve 13 is fixedly passed through the end of the sleeve 2 and the middle of the mounting gasket 22. The end of the cable sleeve 13 away from the adjusting component 4 is threadedly connected to a fixing bolt sleeve 14. Preferably, one end of the fixing bolt sleeve 14 can be connected to a sheath for protecting the cable 11. This arrangement facilitates the protection of the cable 11.

[0032] like Figures 7-10 As shown, the adjusting component 4 includes a washer 41 and a sleeve 42 fixedly connected to the periphery of the cable sleeve 13. The sleeve 42 is movably sleeved on one side of the washer 41. A threaded tube 43, which is threadedly connected to the tensioning component 3, is rotatably connected at the center of the washer 41. The threaded tube 43 is sleeved on the periphery of the cable 11. Guide grooves 4301 extending axially along the two sides of the surface of the threaded tube 43 are symmetrically embedded. A sliding block 4201, which is slidably adapted to and connected in the guide groove 4301, is protruding from the inner side of the opening of the sleeve 42. When it is necessary to adjust the distance between the tensioning assembly 3 and the cable sleeve 13, the sleeve 42 can be pushed away from the washer 41. At this time, the sliding block 4201 slides on the guide groove 4301. The sleeve 42 can rotate relative to the washer 41, thereby driving the threaded tube 43 to rotate. The tensioning assembly 3 is moved relative to the threaded tube 43, which makes it easy to adjust and control the movement of the armor 12, and ensures that the end of the armor 12 can be pressed against the opening of the installation channel 23 after installation.

[0033] Preferably, the outer edge of the washer 41 extends toward the sleeve 42, and the outer edge of the sleeve 42 is slidably fitted around the edge of the washer 41. A bearing sleeve 4101 is rotatably connected to the inner side of the washer 41, and the bearing sleeve 4101 is elastically connected to the sleeve 42 via a telescopic rod 4102. The sleeve 42 can rotate relative to the washer 41 via the telescopic rod 4102 and the bearing sleeve 4101. Furthermore, when the sleeve 42 is pulled away from the washer 41, the telescopic rod 4102 is stretched; after the external force is removed, the telescopic rod 4102 returns to its original position and causes the sleeve 42 to press tightly against the washer 41. Furthermore, a positioning rod 4103 is rotatably connected to the opposite side of the bearing sleeve 4101 and the washer 41. A flexible pad is provided at the opposite ends of the positioning rod 4103 and the washer 41. A transmission connecting rod 4104 connects the sleeve 42 and the positioning rod 4103, with both ends of the transmission connecting rod 4104 rotatably connected to the sleeve 42 and the positioning rod 4103, respectively. When the sleeve 42 is not moved away from the washer 41 by external force, the edge of the sleeve 42 is completely fitted around the edge of the washer 41, and the positioning rod 4103 is in a horizontal state. The flexible pad at the end of the positioning rod 4103 is pressed and adhered to the inner edge of the washer 41. At this time, due to the friction between the flexible pad at the end of the positioning rod 4103 and the inner wall of the edge of the washer 41, the sleeve 42 is not easy to rotate relative to the washer 41, and the relative state between the two remains relatively stable. When the sleeve 42 is pulled away from the washer 41, the sleeve 42 drives the positioning rod 4103 to rotate through the transmission connecting rod 4104, thereby releasing the restriction of the end of the positioning rod 4103 on the inner side of the edge of the washer 41. At this time, the sleeve 42 can rotate relative to the washer 41, thereby adjusting the relative movement of the tensioning assembly 3. After the movement is completed, the sleeve 42 is restored to the edge of the washer 41, and with the cooperation of the telescopic rod 4102, it can restore a tight fit. At this time, the positioning rod 4103 can also restore a tight fit with the inner side of the edge of the washer 41, thereby restricting the relative rotation between the washer 41 and the sleeve 42.

[0034] Furthermore, such as Figure 11 As shown, the tensioning assembly 3 includes a collar 31 fitted to the end of the armor 12. A silicone pad can be embedded in the surface of the collar 31. The collar 31 and armor 12 are fitted together to achieve a relatively tight fit, and this also provides some cushioning during installation, facilitating a tight fit between the end of the armor 12 and the opening of the installation channel 23. A threaded ring 32 is threaded onto the outer periphery of the end of the threaded tube 43. Multiple sets of connecting rods 33 connect the collar 31 and the threaded ring 32. In use, the relative movement of the collar 31, threaded ring 32, and connecting rods 33 can be controlled by rotating the threaded tube 43 via the sleeve 42. The overall adjustment structure is simple, facilitating replacement and disassembly, and also allows 12 to press against the opening 23, ultimately extending the service life of the temperature probe 1.

Claims

1. A gas turbine exhaust temperature monitoring device, comprising a temperature probe, a sleeve surrounding the temperature probe, an installation channel within the sleeve for the temperature probe to pass through, a horizontal pipe fixedly connected to one end of the sleeve and communicating with the installation channel, and the end of the temperature probe extending from the installation channel into the horizontal pipe, characterized in that, The temperature probe is fitted with an armor, and a cable is connected to the end of the temperature probe away from the horizontal tube. The installation channel and the horizontal tube are connected in a constricted manner and adapted to the end of the armor. A tensioning component is connected to the end of the armor away from the horizontal tube. A cable sleeve is fixedly fitted around the end of the cable away from the temperature probe, and an adjustment component is connected to the end of the cable sleeve.

2. The exhaust temperature monitoring device for a gas turbine according to claim 1, characterized in that, The connection between the installation channel and the horizontal pipe is tapered, and the end of the armor is also tapered, with the two fitting together.

3. The exhaust temperature monitoring device for a gas turbine according to claim 1, characterized in that, A mounting gasket is fixedly provided on the outer periphery of the other end of the sleeve. The cable sleeve passes through the end of the sleeve and the middle of the mounting gasket. A fixing bolt sleeve is threadedly connected to the end of the cable sleeve away from the adjustment component.

4. The exhaust temperature monitoring device for a gas turbine according to claim 1, characterized in that, The adjustment assembly includes a washer and a sleeve fixedly connected to the outer periphery of the cable sleeve. The sleeve is movably fitted on one side of the washer. A threaded tube that is rotatably connected to the center of the washer and threadedly engaged with the tensioning assembly is provided. The threaded tube is fitted around the outer periphery of the cable.

5. The exhaust temperature monitoring device for a gas turbine according to claim 4, characterized in that, The threaded tube has guide grooves symmetrically embedded on both sides of its surface, extending along the axial direction of the threaded tube. The sleeve has a sliding block protruding from the inner side of its opening, which is slidably connected to the guide groove.

6. The exhaust temperature monitoring device for a gas turbine according to claim 5, characterized in that, The outer edge of the washer extends toward the sleeve, and the outer edge of the sleeve is slidably fitted around the edge of the washer.

7. The exhaust temperature monitoring device for a gas turbine according to claim 6, characterized in that, The inner side of the washer is rotatably connected to a bearing sleeve, which is elastically connected to a sleeve via a telescopic rod.

8. The exhaust temperature monitoring device for a gas turbine according to claim 7, characterized in that, A positioning rod is rotatably connected to the opposite side of the bearing sleeve and the washer edge. A flexible pad is provided at the opposite end of the positioning rod and the washer edge. A transmission connecting rod is connected between the sleeve and the positioning rod, and the two ends of the transmission connecting rod are rotatably connected to the sleeve and the positioning rod, respectively.

9. The exhaust temperature monitoring device for a gas turbine according to claim 8, characterized in that, When the sleeve edge is completely fitted around the edge of the washer and the positioning rod is in a horizontal position, the flexible pad at the end of the positioning rod and the inner edge of the washer are pressed together.

10. A gas turbine exhaust temperature monitoring device according to any one of claims 4-9, characterized in that, The tensioning assembly includes a collar fitted to the end of the armor, the surface of which is inlaid with a silicone pad, and a threaded ring threadedly fitted to the outer periphery of the end of the threaded tube. Multiple sets of connecting rods are connected between the collar and the threaded ring.

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