A flame detector mounting structure for a gas turbine

Abstract

The application relates to the technical field of flame detector installation, in particular to a flame detector installation structure suitable for a gas turbine, which comprises a combustion assembly, a detection mechanism arranged on the combustion device, a flame detector movably connected to one end of the detection mechanism away from the combustion device, a ring-shaped cooling cavity arranged in the combustion device, and the ring-shaped cooling cavity is used for conveying cooling gas for the detection mechanism; a protection assembly is arranged in the detection mechanism and comprises a protection glass arranged in the detection mechanism and a lower sealing gasket and an upper sealing gasket used for sealing the two sides of the protection glass. The application has the beneficial effect that a mature domestic flame detection product can be installed, including a conventional flame detection probe, an explosion-proof flame detector or a camera, which is used for replacing an imported customized ultraviolet flame detector on a serviceable gas turbine, so that the maintenance cycle is shortened and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of flame detector installation technology, and in particular to a flame detector installation structure suitable for gas turbines. Background Technology

[0002] Flame detectors, as a crucial monitoring component in the combustion chamber of heavy-duty gas turbines, are used to determine the presence of a stable flame. If ignition fails or flameout occurs during operation, an alarm must be issued quickly, and the fuel supply immediately cut off to prevent excessive natural gas concentration in the combustion chamber and downstream channels, thus avoiding safety accidents. Heavy-duty gas turbines typically employ customized ultraviolet (UV) flame detectors. These detectors work by detecting the high-energy ultraviolet radiation emitted by the flame at an extremely fast rate (3-4 ms) when fuel is ignited. The UV flame detector senses this ultraviolet light through a UV sensor, converting it into an electrical signal for analysis and processing to determine the presence of a flame. Therefore, UV flame detectors offer advantages such as high sensitivity and fast flame response. However, customized UV flame detectors present challenges, including the inability of power plants to independently replace them, high costs, and long delivery cycles. These issues result in long repair cycles and high maintenance costs when existing gas turbine flame detectors malfunction.

[0003] Currently, there are mature flame detection products in China, including conventional flame detection probes and explosion-proof flame detectors. However, these products cannot be used in the high-temperature and high-pressure environment of gas turbines and cannot directly replace the ultraviolet flame detectors used in heavy-duty gas turbines by gas turbine manufacturers, resulting in high operation and maintenance costs. Summary of the Invention

[0004] In this section, as well as in the abstract and title of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of this application, and such simplifications or omissions shall not be used to limit the scope of the invention.

[0005] The purpose of this invention is to provide a flame detector mounting structure suitable for gas turbines.

[0006] Therefore, its purpose is to solve the problem that conventional flame detection probes and explosion-proof flame detectors cannot be used in the high-temperature and high-pressure environment of gas turbines.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a flame detector installation structure suitable for gas turbines, comprising a combustion assembly, which includes a combustion device, a detection mechanism disposed on the combustion device, a flame detector being movably connected to the end of the detection mechanism away from the combustion device, an annular cooling chamber being provided inside the combustion device, the annular cooling chamber supplying cooling gas to the detection mechanism; a protective assembly located inside the detection mechanism, comprising a protective glass installed inside the detection mechanism, and a lower sealing gasket and an upper sealing gasket sealing the two sides of the protective glass.

[0008] As a preferred embodiment of the flame detector installation structure of the present invention applicable to gas turbines, the combustion device includes a cylinder, a flame tube fixedly connected inside the cylinder, a burner end cap fixed to one end of the flame tube, a nozzle installed on the burner end cap, an annular air intake channel communicating with an annular cooling chamber opened on one side of the cylinder, a mounting base fixed to the outside of the cylinder, and the end of the mounting base away from the cylinder connected to the detection mechanism.

[0009] As a preferred embodiment of the flame detector installation structure of the present invention applicable to gas turbines, the detection mechanism includes a conduit with multiple inclined cooling holes circumferentially opened, a fastening nut sleeved on the outside of the conduit, a pipe body adapter end threadedly connected to the top of the conduit, and a hexagonal adapter sleeved on the outside of the pipe body adapter end; wherein, a positioning step extends from the bottom of the conduit, and a sealing cone surface is fixedly connected to the conduit at the position corresponding to the fastening nut.

[0010] As a preferred embodiment of the flame detector installation structure applicable to gas turbines according to the present invention, a signal conversion module is provided on one side of the flame detector, and the signal conversion module is used to receive the detection information of the flame detector and transmit the information to the control system.

[0011] As a preferred embodiment of the flame detector installation structure of the present invention applicable to gas turbines, wherein: the tube body transition end is provided with a positioning component that positions the upper sealing gasket, which includes a connecting seat connected to the upper sealing gasket, a driving component is provided above the connecting seat for driving the connecting seat to move, the tube body transition end is provided with a self-locking component, the self-locking component is driven by the driving component to lock with the guide tube, and an adjusting sealing bolt is provided on one side of the tube body transition end to unlock the self-locking component.

[0012] As a preferred embodiment of the flame detector installation structure of the present invention applicable to gas turbines, the connecting seat includes a hollow connecting ring, a rotating ring is rotatably connected to the bottom of the hollow connecting ring, and a groove is provided at the bottom of the rotating ring to hold the upper sealing gasket.

[0013] As a preferred embodiment of the flame detector installation structure of the present invention applicable to gas turbines, the driving component includes a slide rod fixedly connected to a hollow connecting ring, a slide seat fixed at the end of the slide rod away from the hollow connecting ring, a slide groove for accommodating the sliding of the slide seat being opened inside the tube body transition end, an upper elastic sealing layer being fixed inside the slide groove, and a compression spring being fixedly connected between the slide seat and the slide groove.

[0014] As a preferred embodiment of the flame detector installation structure of the present invention applicable to gas turbines, the self-locking component includes a self-locking cavity that is opened inside the tube body transition end and communicates with the slide groove. A self-locking ball is movably provided at the end of the self-locking cavity away from the end communicating with the slide groove. A lower elastic sealing layer that pushes the self-locking ball is fixed inside the self-locking cavity. A self-locking groove for accommodating the self-locking ball is opened on the guide tube.

[0015] As a preferred embodiment of the flame detector installation structure of the present invention applicable to gas turbines, wherein: the hollow connecting ring is provided with a deformation sealing component for sealing the pipe body transition end, which includes a rubber deformation layer fixed to the outer periphery of the hollow connecting ring, and a magnetic airbag communicating with the rubber deformation layer is fixed inside the hollow connecting ring.

[0016] As a preferred embodiment of the flame detector installation structure of the present invention applicable to gas turbines, wherein: a magnetic repulsion ring is provided in the middle of the magnetic airbag, the magnetic repulsion ring is slidably connected to the hollow connecting ring, a compression spring is fixedly connected between the magnetic repulsion ring and the hollow connecting ring, a limit rope is fixed to the outside of the magnetic repulsion ring, and one end of the limit rope is movably passed through the hollow connecting ring and the slide rod and fixed to the slide groove.

[0017] The beneficial effects of the flame detector installation structure for gas turbines of the present invention are as follows: This application can install mature domestic flame detection products, including conventional flame detection probes, explosion-proof flame detectors or cameras, to replace the imported customized ultraviolet flame detectors on existing gas turbines, thereby shortening the maintenance cycle and reducing operation and maintenance costs.

[0018] In addition, the system uses compressed air from the gas turbine itself for cooling, eliminating the need for a separate instrument air or cooling water system. The entire system has a simple structure, low failure rate, and is easy to operate and maintain.

[0019] The addition of positioning components solves the problem of potential misalignment of the protective glass during assembly. The protective glass and the upper sealing gasket can be precisely positioned during the assembly process, ensuring the accuracy and reliability of the assembly, reducing equipment failures and replacements caused by improper assembly, and thus saving costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1 This is a schematic diagram of the overall structure of the flame detector installation structure for gas turbines in this invention.

[0022] Figure 2 This is a schematic diagram of the detection mechanism structure of the flame detector installation structure applicable to gas turbines in this invention.

[0023] Figure 3 This is a cross-sectional view of the detection mechanism of the flame detector mounting structure applicable to gas turbines in this invention.

[0024] Figure 4 This is a three-dimensional structural diagram of the positioning component of the flame detector mounting structure for gas turbines in this invention.

[0025] Figure 5 This is a cross-sectional view of the positioning component of the flame detector mounting structure for gas turbines in this invention.

[0026] Figure 6 This is a partially enlarged structural diagram of the deformation sealing component of the flame detector mounting structure for gas turbines in this invention.

[0027] In the picture:

[0028] 100. Combustion assembly; 101. Combustion device; 102. Detection mechanism; 103. Flame detector; 104. Annular cooling chamber;

[0029] 101a, Cylinder block; 101b, Flame tube; 101c, Burner end cap; 101d, Nozzle; 101e, Annular intake passage; 101f, Mounting base;

[0030] 102a, conduit; 102b, cooling hole; 102c, fastening nut; 102d, pipe body adapter; 102e, hexagonal adapter; 102f, positioning step; 102g, sealing cone surface;

[0031] 103a. Signal conversion module;

[0032] 200. Protective components; 201. Protective glass; 202. Lower sealing gasket; 203. Upper sealing gasket;

[0033] 300. Positioning component; 301. Connecting seat; 302. Driving component; 303. Self-locking component; 304. Adjusting sealing bolt;

[0034] 301a, Hollow connecting ring; 301b, Rotating ring;

[0035] 302a, slide bar; 302b, slide block; 302c, slide groove; 302d, upper elastic sealing layer; 302e, compression spring;

[0036] 303a, self-locking cavity; 303b, lower elastic sealing layer; 303c, self-locking ball;

[0037] 400. Deformation sealing assembly; 401. Rubber deformation layer; 402. Magnetic airbag; 403. Magnetic repulsion ring; 404. Limiting rope. Detailed Implementation

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0041] Example 1

[0042] Reference Figures 1-3 This is the first embodiment of the present invention. This embodiment provides a flame detector installation structure suitable for gas turbines, including a combustion assembly 100, which includes a combustion device 101, a detection mechanism 102 disposed on the combustion device 101, a flame detector 103 movably connected to one end of the detection mechanism 102 away from the combustion device 101, an annular cooling chamber 104 provided inside the combustion device 101, the annular cooling chamber 104 supplying cooling gas to the detection mechanism 102; a protective assembly 200 located inside the detection mechanism 102, which includes a protective glass 201 installed inside the detection mechanism 102, and a lower sealing gasket 202 and an upper sealing gasket 203 sealing the two sides of the protective glass 201 to isolate pressure and heat, so as to avoid affecting the normal detection of the flame detector 103.

[0043] The combustion device 101 includes a cylinder 101a, a flame tube 101b fixedly connected inside the cylinder 101a, a burner end cap 101c fixed at one end of the flame tube 101b, a nozzle 101d installed on the burner end cap 101c, an annular cavity air intake channel 101e communicating with an annular cooling cavity 104 is opened on one side of the cylinder 101a, and a mounting seat 101f is fixed on the outside of the cylinder 101a, with the end of the mounting seat 101f away from the cylinder 101a connected to the detection mechanism 102.

[0044] The testing mechanism 102 includes a conduit 102a, which has multiple inclined cooling holes 102b circumferentially opened. A fastening nut 102c is fitted on the outside of the conduit 102a. A pipe body adapter end 102d is threadedly connected to the top of the conduit 102a. A hexagonal adapter 102e is fitted on the outside of the pipe body adapter end 102d. A positioning step 102f extends from the bottom of the conduit 102a. A sealing cone surface 102g is fixedly connected to the conduit 102a at the position corresponding to the fastening nut 102c.

[0045] In this embodiment, one end of the conduit 102a passes through the cylinder 101a and the flame tube 101b. The conduit 102a has a through hole inside, which is suitable for extracting ultraviolet light from the combustion chamber for detection. The sealing cone surface 102g fixed on the outside of the conduit 102a forms a cone sealing structure with the mounting seat 101f on the cylinder 101a. The mounting seat 101f and the fastening nut 102c are threadedly connected to fix the conduit 102a on the cylinder 101a.

[0046] In this embodiment, the positioning step 102f abuts against the cylinder body 101a to quickly determine the installation position, ensuring that the step height matches the thickness of the flame tube 101b; the cooling hole 102b penetrates the guide tube 102a and the through hole, and the cooling hole 102b forms a certain angle with the central axis of the guide tube 102a, which is suitable for guiding cooling air into the through hole of the guide tube 102a and spraying it towards the positioning step 102f; the tube body adapter end 102d is provided with internal and external threads, which are suitable for installing a conventional flame detection probe and an explosion-proof flame detector 103, respectively; the hexagonal adapter 102e is suitable for assembly and positioning;

[0047] A signal conversion module 103a is provided on one side of the flame detector 103. The signal conversion module 103a is used to receive the detection information from the flame detector 103 and transmit the information to the control system. In this embodiment, the signal conversion module 103a is connected to the flame detector 103 through a wire, and sends the processed flame signal to the gas turbine control system.

[0048] Specifically, the conduit 102a is used to penetrate the gas turbine flame tube 101b and cylinder block 101a. The conduit 102a has a through hole, which leads the ultraviolet spectrum of the flame to the flame detector 103. The inner diameter of the through hole is 10-30mm. The tube body adapter 102d is installed at the top of the conduit 102a and is threadedly connected to the conduit 102a through the internal thread of the tube body adapter 102d. The protective glass 201 is sealed by the cooperation of the lower sealing gasket 202 and the upper sealing gasket 203 to ensure that the high temperature and high pressure gas in the combustion chamber will not enter the tube body adapter 102d through the through hole of the conduit 102a. In addition, the tube body adapter 102d also has a through hole to ensure the extraction of ultraviolet light. The protective glass 201 is a high-transparency protective glass with a thickness of 5-10mm, and the sealing gasket is a high-temperature resistant graphite gasket.

[0049] Furthermore, a positioning step 102f is provided at one end of the conduit 102a near the flame tube 101b. The outer diameter of the positioning step 102f is slightly smaller than the flame detection hole reserved on the flame tube 101b, and the height of the step is consistent with the thickness of the flame tube 101b. The positioning step 102f is mainly used to determine the installation position of the conduit 102a. In addition, in order to ensure the high temperature resistance of the flame detector 103 mounting structure, 4-8 cooling holes 102b are evenly spaced along the circumference on the conduit 102a. The cooling holes 102b penetrate the outer wall of the conduit 102a and the through hole of the conduit 102a, and form an angle of 30°-45° with the central axis of the conduit 102a. The hole diameter is 1mm-3mm, which is suitable for guiding cooling air into the through hole of the conduit 102a and spraying it in the direction of the positioning step 102f to suppress the high temperature gas from entering the through hole of the conduit 102a.

[0050] In this embodiment, the pipe body adapter 102d is provided with internal and external threads, and a conventional flame detection probe or an explosion-proof flame detector can be installed according to the usage environment.

[0051] The air inlet of cooling hole 102b is located inside the annular cavity. Most of the compressed air from the gas turbine compressor enters the flame tube 101b through the nozzle and mixes with the fuel for combustion, forming high-temperature gas. The remaining compressed air enters the annular cooling chamber 104 through the annular cavity inlet passage 101e, mainly to cool the flame tube 101b. In this application, air from the annular cooling chamber 104 is introduced into the through hole of duct 102a and injected into the flame tube 101b to suppress the high-temperature gas from entering the through hole of duct 102a, thus preventing the high-temperature gas from burning the duct 102a. a) On the other hand, to prevent high-temperature gas from contaminating the protective glass 201 and causing the ultraviolet signal to weaken; the protective glass 201 installed between the conduit 102a and the pipe body adapter 102d in the flame detector 103 installation structure is used for pressure bearing and sealing to prevent damage to the flame detector 103; the ultraviolet light generated by the flame in the flame tube 101b enters the flame detector 103 through the through hole of the conduit 102a, the protective glass 201 and the inner hole of the pipe body adapter 102d and emits an electrical signal, which is processed by the signal conversion module and sent to the gas turbine control system.

[0052] Example 2

[0053] Reference Figures 3-5 This is the second embodiment of the present invention. Unlike the previous embodiment, it also includes a positioning component 300, which includes a connecting seat 301 connected to the upper sealing gasket 203. A driving member 302 is provided above the connecting seat 301 for driving the connecting seat 301 to move. A self-locking member 303 is provided inside the tube body adapter end 102d. The self-locking member 303 is driven by the driving member 302 to lock with the conduit 102a. An adjusting sealing bolt 304 is provided on one side of the tube body adapter end 102d to unlock the self-locking member 303. The connecting seat 301 includes a hollow connecting ring 301a. A rotating ring 301b is rotatably connected to the bottom of the hollow connecting ring 301a. A groove is provided at the bottom of the rotating ring 301b to clamp the upper sealing gasket 203. The driving component 302 includes a slide rod 302a fixedly connected to a hollow connecting ring 301a. A slide block 302b is fixedly attached to one end of the slide rod 302a away from the hollow connecting ring 301a. A groove 302c is provided inside the tube body transition end 102d to accommodate the sliding of the slide block 302b. An upper elastic sealing layer 302d is fixed inside the groove 302c. A compression spring 302e is fixedly connected between the slide block 302b and the groove 302c. The self-locking component 303 includes a self-locking cavity 303a connected to the groove 302c inside the tube body transition end 102d. A self-locking ball 303c is movably provided at one end of the self-locking cavity 303a away from the end connected to the groove 302c. A lower elastic sealing layer 303b is fixed inside the self-locking cavity 303a to push the self-locking ball 303c to move. A self-locking groove is provided on the guide tube 102a to accommodate the self-locking ball 303c.

[0054] by Figure 3For example, by making the pipe body adapter 102d and the conduit 102a a separate threaded connection, it is convenient to inspect and replace the protective glass 201, the lower sealing gasket 202 and the upper sealing gasket 203 to maintain the accuracy of the flame detector 103. However, when the protective glass 201 is reassembled, it is impossible to position the protective glass 201. The protective glass 201 may be offset, causing the protective glass 201 to contact the inner wall of the thread of the pipe body adapter 102d and cause jamming.

[0055] Reference Figures 4-5 Therefore, the above problem is solved by adding a positioning component 300. Specifically, when the conduit 102a and the tube body adapter 102d are assembled, since the multiple compression springs 302e are not squeezed, they push the hollow connecting ring 301a to move through the slide rod 302a under their own elastic force. The hollow connecting ring 301a drives the clamped upper sealing gasket 203 to move closer to the bottom opening of the tube body adapter 102d. On the one hand, it is convenient to replace and install the upper sealing gasket 203. On the other hand, the hollow connecting ring 301a will apply pressure to the protective glass 201 through the upper sealing gasket 203 to fix the upper sealing gasket 203. This ensures that the vibration generated during the assembly of the tube body adapter 102d and the conduit 102a will not cause the upper sealing gasket 203 to shift, and that there will be no jamming problem when the tube body adapter 102d and the conduit 102a are connected.

[0056] In summary, the addition of positioning component 300 solves the problem of possible misalignment of protective glass 201 during reassembly. Protective glass 201 and upper sealing gasket 203 can be precisely positioned during assembly, ensuring the accuracy and reliability of assembly, reducing equipment failures and replacements caused by improper assembly, and thus saving costs.

[0057] Reference Figure 5 In addition, when the conduit 102a and the tube body adapter 102d are connected in place, the hollow connecting ring 301a will be squeezed until it abuts against the inner wall of the tube body adapter 102d. At the same time, the hollow connecting ring 301a pushes the slide block 302b through the slide rod 302a. The slide block 302b squeezes the upper elastic sealing layer 302d. The self-locking cavity 303a is filled with gas or liquid. When it is pressurized, it will transmit the pressure to the lower elastic sealing layer 303b. The lower elastic sealing layer 303b deforms under pressure, thereby pushing the self-locking ball 303c to move. The self-locking ball 303c slides out of the self-locking cavity 303a and locks with the corresponding self-locking groove on the conduit 102a, ensuring the reliability of the connection between the conduit 102a and the tube body adapter 102d and avoiding the occurrence of safety accidents due to unstable connection.

[0058] The self-locking design ensures that even under special conditions, such as pressure fluctuations or vibrations, the conduit 102a and the tube body adapter 102d will not loosen unexpectedly, greatly improving the safety and reliability of the connection.

[0059] When the conduit 102a and the tube body adapter 102d need to be disassembled and repaired, the adjusting sealing bolt 304 can be loosened first with a tool. The adjusting sealing bolt 304 is connected to the self-locking cavity 303a, thereby increasing the volume of the self-locking cavity 303a and reducing the pressure at the lower elastic sealing layer 303b. This causes the lower elastic sealing layer 303b to pull the interconnected self-locking ball 303c back to its original position, thereby releasing the locking of the conduit 102a.

[0060] Example 3

[0061] Reference Figures 5-6 This is the third embodiment of the present invention, which further provides a flame detector installation structure suitable for gas turbines. It includes a deformation sealing assembly 400, which comprises a rubber deformation layer 401 fixed to the outer periphery of a hollow connecting ring 301a. A magnetic airbag 402 communicating with the rubber deformation layer 401 is fixed inside the hollow connecting ring 301a. A magnetic repulsion ring 403 is provided in the middle of the magnetic airbag 402, and the magnetic repulsion ring 403 is slidably connected to the hollow connecting ring 301a. A compression spring is fixedly connected between the magnetic repulsion ring 403 and the hollow connecting ring 301a. A limiting rope 404 is fixed to the outer side of the magnetic repulsion ring 403. One end of the limiting rope 404 movably passes through the hollow connecting ring 301a and the sliding rod 302a and is fixed to the sliding groove 302c.

[0062] When the protective glass 201 is inspected and replaced, in order to prevent external dust from entering the tube body adapter 102d, a deformation sealing component 400 is added to seal the lower end of the tube body adapter 102d. The tube body adapter 102d is connected to the flame detector 103 to achieve sealing.

[0063] Specifically, when the compression spring 302e pushes out the hollow connecting ring 301a through its elastic force, the magnetic repulsion ring 403 is limited by the length of the restraint rope 404, which will pull the magnetic repulsion ring 403. The magnetic repulsion ring 403 corresponds to the magnetic airbag 402. The magnetic airbag 402 is squeezed by magnetic repulsion, and the magnetic airbag 402 contracts to deliver gas to the rubber deformation layer 401. The rubber deformation layer 401 expands, thus fitting against the inner wall of the tube body adapter end 102d to achieve sealing. Moreover, the rubber deformation layer 401 is relatively soft and can fully fit against the threaded groove, resulting in a good sealing effect.

[0064] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (e.g., variations in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0065] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0066] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A flame detector mounting structure suitable for gas turbines, characterized in that: include, Combustion assembly (100) includes a combustion device (101) and a detection mechanism (102) disposed on the combustion device (101). A flame detector (103) is movably connected to one end of the detection mechanism (102) away from the combustion device (101). An annular cooling chamber (104) is provided inside the combustion device (101), and the annular cooling chamber (104) supplies cooling gas to the detection mechanism (102). The protective component (200) is located inside the detection mechanism (102), and includes a protective glass (201) installed inside the detection mechanism (102), and a lower sealing gasket (202) and an upper sealing gasket (203) that seal the two sides of the protective glass (201). The combustion device (101) includes a cylinder (101a), a flame tube (101b) is fixedly connected inside the cylinder (101a), a burner end cap (101c) is fixed at one end of the flame tube (101b), a nozzle (101d) is installed on the burner end cap (101c), an annular cavity air intake channel (101e) communicating with an annular cooling cavity (104) is opened on one side of the cylinder (101a), and a mounting seat (101f) is fixed on the outside of the cylinder (101a), with the end of the mounting seat (101f) away from the cylinder (101a) connected to the detection mechanism (102); The testing mechanism (102) includes a conduit (102a), which has a plurality of inclined cooling holes (102b) circumferentially opened, a fastening nut (102c) is fitted on the outside of the conduit (102a), and a pipe body adapter end (102d) is threaded to the top of the conduit (102a). A hexagonal adapter end (102e) is fitted on the outside of the pipe body adapter end (102d). The bottom of the conduit (102a) extends with a positioning step (102f), and a sealing cone surface (102g) is fixedly connected to the conduit (102a) at the position corresponding to the fastening nut (102c). The tube body adapter (102d) is provided with a positioning component (300) that positions the upper sealing gasket (203). The component includes a connecting seat (301) connected to the upper sealing gasket (203). A driving component (302) is provided above the connecting seat (301) to drive the connecting seat (301) to move. The tube body adapter (102d) is provided with a self-locking component (303). The self-locking component (303) is driven by the driving component (302) to lock with the conduit (102a). An adjusting sealing bolt (304) is provided on one side of the tube body adapter (102d) to unlock the self-locking component (303).

2. The flame detector mounting structure for gas turbines as described in claim 1, characterized in that: A signal conversion module (103a) is provided on one side of the flame detector (103). The signal conversion module (103a) is used to receive the detection information of the flame detector (103) and transmit the information to the control system.

3. The flame detector mounting structure for gas turbines as described in claim 2, characterized in that: The connecting seat (301) includes a hollow connecting ring (301a), and a rotating ring (301b) is rotatably connected to the bottom of the hollow connecting ring (301a). The bottom of the rotating ring (301b) is provided with a groove for clamping the upper sealing gasket (203).

4. The flame detector mounting structure for gas turbines as described in claim 3, characterized in that: The driving component (302) includes a slide rod (302a) fixedly connected to a hollow connecting ring (301a). A slide block (302b) is fixed at one end of the slide rod (302a) away from the hollow connecting ring (301a). A slide groove (302c) is provided inside the tube body adapter end (102d) to accommodate the sliding of the slide block (302b). An upper elastic sealing layer (302d) is fixed inside the slide groove (302c). A compression spring (302e) is fixedly connected between the slide block (302b) and the slide groove (302c).

5. The flame detector mounting structure for gas turbines as described in claim 4, characterized in that: The self-locking component (303) includes a self-locking cavity (303a) that is connected to the slide groove (302c) inside the tube body adapter end (102d). A self-locking ball (303c) is movably provided at the end of the self-locking cavity (303a) away from the end connected to the slide groove (302c). A lower elastic sealing layer (303b) that pushes the self-locking ball (303c) is fixed inside the self-locking cavity (303a). A self-locking groove for accommodating the self-locking ball (303c) is provided on the conduit (102a).

6. The flame detector mounting structure for gas turbines as described in claim 5, characterized in that: The hollow connecting ring (301a) is provided with a deformation sealing assembly (400) for sealing the tube body transition end (102d), which includes a rubber deformation layer (401) fixed to the outer periphery of the hollow connecting ring (301a), and a magnetic airbag (402) communicating with the rubber deformation layer (401) is fixed inside the hollow connecting ring (301a).

7. The flame detector mounting structure for gas turbines as described in claim 6, characterized in that: The magnetic airbag (402) is provided with a magnetic repulsion ring (403) in the middle. The magnetic repulsion ring (403) is slidably connected to the hollow connecting ring (301a). A compression spring is fixedly connected between the magnetic repulsion ring (403) and the hollow connecting ring (301a). A limiting rope (404) is fixed on the outside of the magnetic repulsion ring (403). One end of the limiting rope (404) is movably passed through the hollow connecting ring (301a) and the slide rod (302a) and fixed to the slide groove (302c).

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