Dual lens endoscope for gas engine premix burner and method of use

Abstract

The application discloses a double-lens endoscope for a gas engine premix burner and a use method thereof, and comprises the following steps: installing the endoscope, connecting a mobile terminal, adjusting the position of the endoscope, adjusting the position of the endoscope module outside the premix burner body by using a push-pull handle, reducing the operation difficulty of checking the gas holes, and not needing professional operation; and checking operation. The double-lens endoscope for the gas engine premix burner and the use method thereof are characterized in that the push-pull handle is connected with the endoscope module by using a connecting block, sliding balls are uniformly embedded on the surface of the endoscope module, reset springs are fixedly installed on the bottom surface of the sliding balls, the top end of the sliding ball is always in contact with the annular chamber, the smoothness of the movement of the endoscope module in the annular chamber is improved, the endoscope module in the annular chamber is moved in a ring shape by the movement of the push-pull handle, the gas holes are checked one by one, omission or repeated checking is avoided, and the checking efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of premix burner of gas turbine, in particular to a double-lens endoscope for premix burner of gas turbine and a using method thereof. BACKGROUND

[0002] The burner is a device that mixes and burns fuel and air in a certain way. Burners are divided into industrial burners, combustion machines, civil burners, and special burners according to types and application fields. They are made of corrosion-resistant and high-temperature-resistant materials such as stainless steel or titanium. The burner is one of the core hot components of the gas turbine, which ignites natural gas and air to quickly convert the chemical energy in natural gas into heat energy.

[0003] The HR3 burner of Siemens SGT4000F heavy-duty gas turbine is composed of a duty burner and a premix burner. The former directly sprays a large amount of fuel to stabilize the flame; the latter mixes air and fuel in advance through an internal chamber and a swirl plate structure to improve combustion efficiency.

[0004] The existing endoscope for premix burner of gas turbine uses a general endoscope. Due to the complex structure of the premix burner, the inspection is difficult, the general endoscope is difficult to operate, and the skilled workers take a very long time to inspect, with an average of 60 minutes, a total of 24, and are prone to damage, resulting in high maintenance costs. The existing general endoscope cable has a certain elasticity and has no fixed fulcrum inside the burner. To operate the endoscope (4mm in diameter) to insert into the gas hole (6mm in diameter) for inspection, the lens operation is difficult, the operator needs to have certain experience, and at the same time, the endoscope has a certain bending after being inserted into the burner, which makes it difficult to directly determine the approximate position. Only by checking the position of the lens through the light transmission of the gas hole can the repeated work be avoided. Moreover, the space inside the burner is small, and the repeated operation of the endoscope inspection causes great loss of the tungsten wire inside the endoscope. According to experience, the endoscope needs to be replaced after 120-240 times of burner inspection, and the replacement cost is 100,000 yuan each time, which reduces the inspection efficiency and increases the inspection cost.

[0005] Therefore, we propose a double-lens endoscope for premix burner of gas turbine and a using method thereof to solve the above problems. SUMMARY

[0006] The present application aims to provide a double-lens endoscope for premix burner of gas turbine and a using method thereof to solve the above problems in the background art, such as the difficulty in operating the general endoscope, the difficulty in checking the gas hole, and the damage caused by the general endoscope, which reduces the inspection efficiency and increases the inspection cost.

[0007] To achieve the above object, the application provides the following technical scheme: a double-lens endoscope for a gas turbine premix combustor, comprising a premix combustor body and a gas passage;

[0008] The premix combustor body is a circular truncated cone structure, the left side surface area of the premix combustor body is smaller than the right side surface area, and the gas passage is arranged above the right side of the premix combustor body, and the central axis of the gas passage is perpendicular to the right side surface of the premix combustor body;

[0009] An annular chamber is arranged inside the premix combustor body, and the annular chamber is in communication with the gas passage;

[0010] An endoscope module is arranged inside the annular chamber, and the left and right sides of the endoscope module are arc-shaped structures, and the endoscope module is in a sliding structure.

[0011] Preferably, the annular chamber is distributed with gas holes, the gas holes are elliptical structures, the gas holes are uniformly distributed in twenty groups inside the annular chamber, the gas holes have small diameters, and the gas holes are used for in-depth inspection by the lenses.

[0012] The above technical scheme is adopted, the gas holes are elliptical structures, and the gas holes are uniformly distributed in twenty groups inside the annular chamber, so as to improve the use effect of the gas turbine premix combustor.

[0013] Preferably, the gas holes are arranged corresponding to the endoscope module, the endoscope module is provided with double lenses on the surface, the double lenses are lens one and lens two respectively, the lens one and the lens two are symmetrically arranged on the surface of the endoscope module, and the lens one and the lens two are respectively provided with a fixed angle according to the position of the gas hole.

[0014] The above technical scheme is adopted, the gas holes are arranged corresponding to the endoscope module, the endoscope module is provided with double lenses on the surface, the lens one and the lens two are respectively provided with a fixed angle according to the position of the gas hole, so as to check the gas holes by the lens one and the lens two, and improve the inspection efficiency.

[0015] Preferably, the left and right sides of the lens one and the lens two are provided with LED light sources, the LED light sources are protruded from the endoscope module, the endoscope module is connected with a cable at the back, the cable is arranged opposite to the lens one and the lens two, the end of the cable is connected with a mobile terminal penetrating through the premix combustor body, and the LED light sources are turned on and off by the mobile terminal.

[0016] The technical scheme is adopted, the LED light source is arranged on both sides of the lens one and the lens two, the end of the cable is connected with the mobile terminal, the LED light source is started and stopped by connecting the mobile terminal, the clarity is improved by using the LED light source in the inspection of the gas hole, and the practicability is good.

[0017] Preferably, the endoscope module is embedded in the inner side of the annular chamber, and the surface of the endoscope module is embedded with sliding balls, the bottom end of the sliding ball is in contact with the inner wall of the annular chamber, the bottom surface of the sliding ball is fixedly installed with a reset spring, the reset spring is arranged in the endoscope module, and the top end of the sliding ball is in contact with the inner wall of the annular chamber by the reset spring.

[0018] The technical scheme is adopted, the LED light source is arranged on both sides of the lens one and the lens two, the end of the cable is connected with the mobile terminal, the LED light source is started and stopped by connecting the mobile terminal, the clarity is improved by using the LED light source in the inspection of the gas hole, and the practicability is good.

[0019] Preferably, the endoscope module is embedded in the inner side of the annular chamber, and the surface of the endoscope module is embedded with sliding balls, the bottom end of the sliding ball is in contact with the inner wall of the annular chamber, the bottom surface of the sliding ball is fixedly installed with a reset spring, the reset spring is arranged in the endoscope module, and the top end of the sliding ball is in contact with the inner wall of the annular chamber by the reset spring.

[0020] The technical scheme is adopted, the LED light source is arranged on both sides of the lens one and the lens two, the end of the cable is connected with the mobile terminal, the LED light source is started and stopped by connecting the mobile terminal, the clarity is improved by using the LED light source in the inspection of the gas hole, and the practicability is good.

[0021] Preferably, the endoscope module is embedded in the inner side of the annular chamber, and the surface of the endoscope module is embedded with sliding balls, the bottom end of the sliding ball is in contact with the inner wall of the annular chamber, the bottom surface of the sliding ball is fixedly installed with a reset spring, the reset spring is arranged in the endoscope module, and the top end of the sliding ball is in contact with the inner wall of the annular chamber by the reset spring.

[0022] The technical scheme is adopted, the LED light source is arranged on both sides of the lens one and the lens two, the end of the cable is connected with the mobile terminal, the LED light source is started and stopped by connecting the mobile terminal, the clarity is improved by using the LED light source in the inspection of the gas hole, and the practicability is good.

[0023] A use method of a double-lens endoscope for a gas turbine premix combustor, comprising the following steps:

[0024] S1, install the endoscope: install the endoscope module in the premix burner body, wherein the endoscope module surface is embedded with lens one and lens two, and the angle of lens one and lens two is adjusted according to the position of the gas hole;

[0025] S2, connect the mobile terminal: the top end of the cable arranged at the back of the endoscope module is connected with the mobile terminal, the gas hole is checked by using lens one and lens two arranged in the endoscope module, and LED light sources are arranged on both sides of lens one and lens two, thereby improving the clarity of the mobile terminal inspection result display;

[0026] S3, adjust the position of the endoscope: the position of the endoscope module is adjusted outside the premix burner body by using the push-pull handle, thereby reducing the operation difficulty of checking the gas hole, improving the efficiency of checking the gas hole, and avoiding repeated work.

[0027] S4, check the operation: the endoscope module is moved by using the movement of the push-pull handle, and twenty groups of gas holes are checked one by one, thereby shortening the checking time, avoiding repeated work, and improving the checking efficiency.

[0028] Preferably, the length of the cable is greater than the circumference of the annular chamber, so that each gas hole can be checked when the mobile terminal is connected, and the checking efficiency is improved.

[0029] Compared with the prior art, the beneficial effects of the present application are:

[0030] 1. The endoscope module is arranged in the annular chamber inside the premix burner body, the endoscope module surface is provided with double lenses, namely lens one and lens two, lens one and lens two are arranged corresponding to the gas hole, lens one and lens two are provided with a fixed angle according to the position of the gas hole, the gas hole can be checked in a targeted manner, LED light sources are arranged on both sides of lens one and lens two, the cable arranged at the back of the endoscope module is connected with the mobile terminal, the LED light source is turned on when the endoscope module is connected with the mobile terminal, the clarity of the endoscope module in checking the gas hole is improved, and the endoscope module has good practicability.

[0031] 2. The push-pull handle is arranged on the upper surface of the push-pull handle, the push-pull handle is connected with the endoscope module by using the connecting block, the sliding ball is uniformly embedded on the surface of the endoscope module, the reset spring is fixedly installed on the bottom surface of the sliding ball, the top end of the sliding ball is always in contact with the annular chamber, the flow of the endoscope module in the annular chamber is improved, the sliding groove of the connecting block is arranged outside the annular chamber, when the push-pull handle moves, the endoscope module in the annular chamber moves in a circular manner, the gas hole can be checked one by one, the checking efficiency is improved, and the checking cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 For the use method flow structure schematic diagram of the application;

[0033] Figure 2 For the main view structure schematic diagram of the application;

[0034] Figure 3 For the main view structure schematic diagram of the application;

[0035] Figure 4 For the main view structure schematic diagram of the application;

[0036] Figure 5 For the main view structure schematic diagram of the application; Figure 4 A-A structure schematic diagram in the application;

[0037] Figure 6 For the main view structure schematic diagram of the application; Figure 4 A-A structure schematic diagram in the application;

[0038] Figure 7 For the main view structure schematic diagram of the application; Figure 5 A-A structure schematic diagram in the application;

[0039] Figure 8 For the main view structure schematic diagram of the application;

[0040] In the figure: 1, premix burner body; 2, gas channel; 3, annular chamber; 4, endoscope module; 5, gas hole; 6, lens one; 7, lens two; 8, LED light source; 9, cable; 10, sliding ball; 11, reset spring; 12, connecting block; 13, sliding groove; 14, push-pull handle; 15, anti-skid bar. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0042] Please refer to Figures 1-8The application provides a double-lens endoscope for a premix combustor of a gas turbine, which comprises a premix combustor body 1 and a gas passage 2, the premix combustor body 1 is in a circular truncated cone structure, the left side surface area of the premix combustor body 1 is smaller than the right side surface area, the gas passage 2 is arranged above the right side of the premix combustor body 1, the central axis of the gas passage 2 is perpendicular to the right side surface of the premix combustor body 1, an annular chamber 3 is arranged in the inner side of the premix combustor body 1, the annular chamber 3 is communicated with the gas passage 2, an endoscope module 4 is arranged in the inner side of the annular chamber 3, the left and right sides of the endoscope module 4 are in arc structures, and the endoscope module 4 is in a sliding structure.

[0043] As shown in the combination Figures 2-5 The gas holes 5 are in an elliptical structure, the gas holes 5 are uniformly distributed in twenty groups in the annular chamber 3, the gas holes 5 are small in diameter, and the gas holes 5 are in-depth inspected by using the lenses. The gas holes 5 are in an elliptical structure and are uniformly distributed in twenty groups in the annular chamber 3, so that the use effect of the premix combustor of the gas turbine is improved. The gas holes 5 are arranged in correspondence with the endoscope module 4, the endoscope module 4 is provided with double lenses on the surface, the double lenses are a lens one 6 and a lens two 7 respectively, the lens one 6 and the lens two 7 are symmetrically arranged on the surface of the endoscope module 4, and the lens one 6 and the lens two 7 are respectively provided with a fixed angle according to the position of the gas hole 5. The gas holes 5 are arranged in correspondence with the endoscope module 4, the endoscope module 4 is provided with double lenses on the surface, the lens one 6 and the lens two 7 are respectively provided with a fixed angle according to the position of the gas hole 5, so that the lens one 6 and the lens two 7 can be used to check the gas hole 5 in a targeted manner, and the checking efficiency is improved. The LED light sources 8 are arranged on the two sides of the lens one 6 and the lens two 7, the LED light sources 8 protrude from the endoscope module 4, the endoscope module 4 is connected with a cable 9 at the back, the cable 9 is arranged opposite to the lens one 6 and the lens two 7, the end of the cable 9 penetrates through the premix combustor body 1 and is connected with a mobile terminal, and the LED light sources 8 are turned on and off by connecting the mobile terminal. The LED light sources 8 are arranged on the two sides of the lens one 6 and the lens two 7, the endoscope module 4 is connected with the cable 9 at the back, the end of the cable 9 penetrates through the premix combustor body 1 and is connected with the mobile terminal, and the LED light sources 8 are turned on and off by connecting the mobile terminal, so that the LED light sources 8 can be used to improve the definition when checking the gas hole 5, and the application has good practicability.

[0044] As shown in the combination Figures 5-8As shown, the endoscope module 4 is embedded in the inside of the annular chamber 3, and the surface of the endoscope module 4 is embedded with sliding balls 10, and the bottom end of the sliding ball 10 is in contact with the inner wall of the annular chamber 3, and the bottom surface of the sliding ball 10 is fixedly installed with a return spring 11, and the return spring 11 is arranged inside the endoscope module 4, and the top end of the sliding ball 10 is in contact with the inner wall of the annular chamber 3 by the return spring 11. By embedding the surface of the endoscope module 4 with sliding balls 10, the bottom surface of the sliding ball 10 is fixedly installed with a return spring 11, and the top end of the sliding ball 10 is in contact with the inner wall of the annular chamber 3 by the return spring 11, which facilitates the smoothness of the endoscope module 4 moving inside the annular chamber 3, and is beneficial to improve the inspection efficiency. The side surface of the endoscope module 4 is provided with a connecting block 12, and the upper end of the connecting block 12 penetrates the surface of the premix burner body 1, and the connecting block 12 constitutes an annular motion structure in the sliding groove 13 arranged on the surface of the premix burner body 1, and the sliding groove 13 is arranged on the periphery of the annular chamber 3. By arranging the connecting block 12 on the side surface of the endoscope module 4, the upper end of the connecting block 12 penetrates the surface of the premix burner body 1, and the connecting block 12 constitutes an annular motion structure in the sliding groove 13 arranged on the surface of the premix burner body 1, which facilitates the movement of the endoscope module 4 inside the annular chamber 3 by the connecting block 12. The top end of the connecting block 12 is provided with a push-pull handle 14, and the connecting block 12 is perpendicular to the bottom surface of the push-pull handle 14, and the push-pull handle 14 is arranged on the surface of the premix burner body 1, and the surface of the push-pull handle 14 is provided with anti-skid strips 15, and the push-pull handle 14 makes the endoscope module 4 constitute an annular moving structure. The top end of the connecting block 12 is provided with a push-pull handle 14, the push-pull handle 14 is arranged on the surface of the premix burner body 1, and the surface of the push-pull handle 14 is provided with anti-skid strips 15, which facilitates the adjustment of the position of the endoscope module 4 inside the premix burner body 1 by the push-pull handle 14 on the outside, and has good practicability.

[0045] In combination Figure 1 As shown, a kind of using method of dual-lens endoscope for gas turbine premix burner, comprising the following steps:

[0046] S1, install endoscope: install endoscope module 4 in premix burner body 1, wherein the surface of endoscope module 4 is embedded with lens one 6 and lens two 7, and the angle of lens one 6 and lens two 7 is fixedly adjusted according to the position of gas hole 5;

[0047] S2, connect mobile terminal: the top end of cable 9 arranged on the back of endoscope module 4 is connected with mobile terminal, and gas hole 5 is checked by lens one 6 and lens two 7 arranged in endoscope module 4, and LED light source 8 is arranged on the two sides of lens one 6 and lens two 7, which improves the clarity of mobile terminal inspection result display;

[0048] S3, adjust the endoscope position: adjust the position of the endoscope module 4 outside the premixed burner body 1 by using the push-pull handle 14, which reduces the difficulty of checking the gas holes 5, is easy to operate, and does not require professional operation;

[0049] S4, check operation: move the endoscope module 4 by using the push-pull handle 14 to check the twenty groups of gas holes 5 one by one, which shortens the checking time, avoids repeated work, and improves the checking efficiency.

[0050] The length of the cable 9 is greater than the circumference of the annular chamber 3, which facilitates checking each gas hole 5 when connecting the mobile terminal, and is beneficial to improve the checking efficiency.

[0051] In the use of the dual-lens endoscope for gas turbine premixed combustor and the use method, the endoscope module 4 is arranged inside the annular chamber 3 arranged inside the premixed burner body 1, the endoscope module 4 is provided with dual lenses on the surface, which are lens one 6 and lens two 7, the lens one 6 and the lens two 7 are arranged corresponding to the gas holes 5, the lens one 6 and the lens two 7 are provided with a fixed angle according to the position of the gas holes 5, which is beneficial to check the gas holes 5, and the LED light source 8 is arranged on both sides of the lens one 6 and the lens two 7, the cable 9 arranged on the back of the endoscope module 4 is connected with the mobile terminal, when the endoscope module 4 is connected with the mobile terminal, the LED light source 8 is turned on, which is beneficial to improve the clarity of checking the gas holes 5 by the endoscope module 4, and has good practicability; the push-pull handle 14 is arranged, the anti-slip strip 15 is arranged on the upper surface of the push-pull handle 14, the push-pull handle 14 is connected with the endoscope module 4 by using the connecting block 12, the sliding ball 10 is embedded in the surface of the endoscope module 4, the reset spring 11 is fixedly installed on the bottom surface of the sliding ball 10, the top end of the sliding ball 10 is always in contact with the annular chamber 3, which is beneficial to improve the smoothness of the endoscope module 4 moving inside the annular chamber 3, and the sliding groove 13 where the connecting block 12 is arranged is arranged outside the annular chamber 3, when the push-pull handle 14 moves, the endoscope module 4 inside the annular chamber 3 moves in a circular manner, which is beneficial to check the gas holes 5 one by one, avoids missing or repeated checking, improves the checking efficiency, and reduces the checking cost.

[0052] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dual-lens endoscope for a premixing burner of a gas turbine, comprising a premixing burner body (1) and a gas channel (2), characterized in that: The premix burner body (1) is a truncated cone structure, and the surface area of ​​the left side of the premix burner body (1) is smaller than the surface area of ​​the right side, and a gas channel (2) is provided above the right side of the premix burner body (1), and the central axis of the gas channel (2) is provided perpendicular to the right side surface of the premix burner body (1); An annular chamber (3) is provided inside the premix burner body (1), and the annular chamber (3) is communicated with the gas channel (2); An endoscope module (4) is provided inside the annular chamber (3), and both left and right sides of the endoscope module (4) are arc-shaped structures. Gas holes (5) are distributed inside the annular chamber (3), and the gas holes (5) are provided corresponding to the endoscope module (4). A double lens is provided on the surface of the endoscope module (4), and the double lens are lens one (6) and lens two (7), and lens one (6) and lens two (7) are symmetrically provided on the surface of the endoscope module (4), and lens one (6) and lens two (7) are respectively provided with a fixed angle according to the position of the gas hole (5). LED light sources (8) are provided on both sides of lens one (6) and lens two (7), and the LED light source (8) protrudes from the endoscope module (4), and a cable (9) is connected to the back of the endoscope module (4), and the cable (9) is provided opposite to the lens one (6) and the lens two (7), and the end of the cable (9) passes through the premix burner body (1) and is connected to the mobile terminal, and the LED The light source (8) is turned on and off by connecting to a mobile terminal; the endoscope module (4) is embedded in the inner side of the annular chamber (3), and a sliding ball (10) is embedded in the surface of the endoscope module (4), and the top and bottom ends of the sliding ball (10) are in contact with the inner wall of the annular chamber (3), and a return spring (11) is fixedly installed on the bottom surface of the sliding ball (10), and the return spring (11) is arranged inside the endoscope module (4), and the top end of the sliding ball (10) is in contact with the inner wall of the annular chamber (3) by means of the return spring (11).

2. The dual-lens endoscope for use in a premix combustor of a gas turbine according to claim 1, characterized in that: The gas holes (5) are of elliptical structure, and the gas holes (5) are evenly distributed in twenty groups inside the annular chamber (3), and the gas holes (5) have a small aperture, and the gas holes (5) are lens-mounted. Conduct an in-depth inspection.

3. The dual-lens endoscope for use in a premix combustor of a gas turbine according to claim 1, characterized in that: A connecting block (12) is provided on the side of the endoscope module (4), and the upper end of the connecting block (12) is provided through the surface of the premixing burner body (1), and the connecting block (12) forms an annular motion structure in a slide groove (13) provided on the surface of the premixing burner body (1), and the slide groove (13) is provided on the periphery of the annular chamber (3).

4. The dual-lens endoscope for use in a premix combustor of a gas turbine according to claim 3, characterized in that: The connecting block (12) is provided with a push-pull handle (14) at the top end, and the connecting block (12) is perpendicular to the bottom surface of the push-pull handle (14), and the push-pull handle (14) is arranged on the surface of the premix burner body (1), and the surface of the push-pull handle (14) is provided with anti-skid strips (15), and the push-pull handle (14) forms a ring-shaped moving structure with the endoscope module (4).

5. The method of using a dual lens endoscope for a premix combustor of a gas turbine engine according to any one of claims 1-4, characterized in that: The method comprises the following steps: S1, installing an endoscope: installing the endoscope module (4) inside the premix burner body (1), wherein the surface of the endoscope module (4) is embedded with a lens one (6) and a lens two (7), and the angles of the lens one (6) and the lens two (7) are adjusted according to the position of the gas hole (5); S2, connecting a mobile terminal: connecting the top end of the cable (9) arranged at the back of the endoscope module (4) with the mobile terminal, checking the gas hole (5) by using the lens one (6) and the lens two (7) arranged on the endoscope module (4), and the left and right sides of the lens one (6) and the lens two (7) are respectively provided with LED light sources (8), which improves the clarity of the display of the inspection results of the mobile terminal; S3, adjusting the position of the endoscope: adjusting the position of the endoscope module (4) outside the premix burner body (1) by using the push-pull handle (14), which reduces the operation difficulty of checking the gas hole (5) and makes it easy to operate without the need for professional operation; S4, checking operation: moving the endoscope module (4) by using the movement of the push-pull handle (14), and checking each of the twenty groups of gas holes (5), which shortens the inspection time, avoids repeated work, and improves the inspection efficiency.

6. The method of using a dual lens endoscope for a premix combustor of a combustion engine according to claim 5, characterized in that: The length of the cable (9) is greater than the circumference of the annular chamber (3), which facilitates the inspection of each gas hole (5) when connecting the mobile terminal, and is conducive to improving the inspection efficiency.

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