Long-cantilever double-rail type gas turbine running guide rail device

Abstract

The long-cantilever double-rail gas turbine running guide rail device comprises double guide rails and a guide rail supporting structure, the double guide rails are symmetrically installed on the two sides of a gas turbine, and the upper-layer guide rail and the lower-layer guide rail of the double guide rails are fixedly connected through a connecting assembly and connected with a supporting column; a front supporting point of the fuel gas generator is located on the axis horizontal plane and located at the front end of the generator; the rear supporting point is located on the intercooler, and the generator intermediate roller runs on the upper-layer guide rail; front and rear supporting points of the power turbine are located on the axis horizontal plane, and the power turbine and the front and rear rollers run on the upper-layer guide rail. The front roller and the rear roller are located in the two guide rail grooves respectively and run along different tracks, the double-rail type running guide rail device can reduce the structure interference risk, the guide rail supporting tool can be fixed to the two sides of an intercooler, the span of the supporting tool is effectively reduced, and the stability of the gas turbine in-out box loading process is improved.

Description

Technical Field

[0001] The invention relates to a marine gas turbine generator set, in particular to a gas turbine operating guide rail device. Background Art

[0002] The gas turbine operating rail device uses the gas turbine inlet space, and through the cooperation of the rail track and the operating tooling, it turns the two main structures of the gas generator and the power turbine from the horizontal direction to the vertical direction, so that the gas turbine can be operated outside the box body. At present, the gas turbine box body uses a single-track operating rail, and the front and rear support rollers on the same side run in the same rail. There is a risk of interference between the farthest point of the outer contour of the gas turbine and the chassis. Due to the small casing radius of the core engine area of ​​the indirect-cooled gas turbine, the span of the rail support tooling is too long and the operating stability is weak. Summary of the invention

[0003] The present invention proposes a long cantilever double-track gas turbine operating guide rail device, which adopts front and rear rollers respectively located in two guide rail grooves and run along different tracks. The double-track operating guide rail device can reduce the risk of structural interference. The guide rail support tooling can be fixed on both sides of the intercooler, effectively reducing the span of the support tooling and improving the stability of the gas turbine entering and exiting the box body.

[0004] To achieve the above-mentioned purpose, the scheme of the present invention is: a long cantilever double-track gas turbine operating guide rail device, including double guide rails and guide rail support structures, the double guide rails are symmetrically installed on both sides of the gas turbine, the upper and lower guide rails of the double guide rails are fixedly connected by connecting components, and are connected to the support columns; the front support point of the gas generator is on the horizontal plane of the axis, located at the front end of the generator, and the generator air intake roller runs on the lower guide rail; the rear support point is located on the intercooler, and the generator intermediate roller runs on the upper guide rail; the front and rear support points of the power turbine are on the horizontal plane of the axis, and the power turbine and the front and rear rollers run on the upper guide rail.

[0005] Furthermore, the guide rail support structure includes a guide rail body, a generator lifting flange, a power turbine lifting flange, a roller assembly, and a support assembly.

[0006] Furthermore, the cavity of the guide rail body is C-shaped and cooperates with the roller.

[0007] Furthermore, the generator lifting flange is connected and fixed to the gas turbine inlet, and the front end is pulled by a lifting tool.

[0008] Furthermore, the power turbine lifting flange is connected and fixed to the power turbine inlet, while taking into account the supporting function of the rollers, rollers are installed on both sides.

[0009] Furthermore, the roller assembly includes three specifications, namely, a power turbine roller, a generator roller, and an intercooler roller.

[0010] Furthermore, the generator support in the support assembly is installed at the front end of the gas generator, and rollers are installed on both sides.

[0011] The beneficial effects of the present invention are:

[0012] The present invention adopts front and rear rollers respectively located in two guide rail grooves and running along different tracks. The double-track operating guide rail device can reduce the risk of structural interference. The guide rail support tooling can be fixed on both sides of the intercooler, effectively reducing the span of the support tooling and improving the stability of the gas turbine entering and exiting the box body.

[0013] According to the running track of the outer contour of the gas turbine, the running space in the gas turbine housing is smaller than that of the single-track guide rail device, and the local stress of the guide rail under special working conditions is better than that of the single-track guide rail device. The dual-track gas turbine running guide rail device has been applied in a certain intercooled gas turbine housing project with good results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the gas generator and gas turbine guide rails;

[0015] Figure 2 yes Figure 1 Left view of

[0016] Figure 3 It is a schematic diagram of the power turbine and gas turbine guide rails;

[0017] Figure 4 yes Figure 3 Left view of

[0018] Figure 5 It is a schematic diagram of the gas turbine guide rail;

[0019] Figure 6 It is a schematic diagram of the operating status of the gas generator;

[0020] Among them: a is state one, b is state two, c is state three,

[0021] Figure 7 It is a schematic diagram of the gas turbine operation trajectory;

[0022] Among them: a is the running trajectory of the gas generator, b is the running trajectory of the power turbine;

[0023] Figure 8 It is a schematic diagram of the generator lifting flange in the gas turbine rail support structure;

[0024] Fig. 9 yes Figure 8 Left sectional view of

[0025] Fig.10It is a schematic diagram of the power turbine lifting flange in the gas turbine rail support structure;

[0026] Fig.11 yes Fig.10 Left sectional view of

[0027] Fig.12 yes Fig.10 Right view of;

[0028] Fig.13 is a schematic diagram of a roller assembly in a gas turbine rail support structure;

[0029] Among them: a is the power turbine roller, b is the generator roller, and c is the intercooler roller;

[0030] Fig.14 is a schematic diagram of a generator air inlet support in a gas turbine rail support structure;

[0031] Fig.15 It is the trend diagram of the force change of the guide rail at the front and rear rollers;

[0032] Among them: a is state 2, b is state 3, c is state 4;

[0033] Fig.16 It is the guide rail strength calculation diagram;

[0034] Among them: a is the constraint state, b is the deformation cloud map, and c is the stress cloud map. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] like Figures 1 to 15 As shown, a long cantilever double-track gas turbine operating guide rail device of the present invention includes a double-track hoisting track design scheme, a guide rail support structure design scheme, special working condition guide rail strength simulation calculation, etc.

[0037] (1) Guide rail hoisting trajectory design

[0038] The main body of a certain indirect-cooled gas turbine consists of a gas generator and a power turbine. The intercooler has a larger outer contour radius and is located in the middle and rear section of the gas generator. The lifting track of the double guide rail 1 can meet the lifting and reinstallation actions of the generator and the power turbine.

[0039] The front support point of the gas generator is on the horizontal plane of the axis, the generator air intake support 3 is located at the front end of the generator, and the generator air intake roller 2 runs on the lower rail; the rear support point is located on the intercooler, the center of the mounting hole is 450mm higher than the axis of the combustion engine, and the generator intermediate roller 4 runs on the upper rail; the front and rear support points of the power turbine are located on the horizontal plane of the axis, and the horizontal position of the front and rear rollers 7 is raised to 450mm on the axis through the support assembly, and the front and rear rollers 7 run on the upper rail. The matching method of the gas turbine support point and the double-layer rail 1 is as follows Figures 1 to 5 shown.

[0040] like Figure 6 As shown in the figure, the operation process of the gas generator roller includes the following states:

[0041] State 1: The front and rear rollers run horizontally along the guide rails;

[0042] State 2: The front roller passes through the transition section of the lower guide rail, and the rear roller keeps running horizontally;

[0043] State 3: The front roller runs vertically upward along the guide rail, and the rear roller keeps running horizontally;

[0044] State 4: The front roller keeps running vertically upward along the guide rail, and the rear roller enters the transition section of the upper guide rail;

[0045] State 5: The front and rear rollers keep running vertically along the guide rails.

[0046] The operation process of the power turbine roller includes the following states:

[0047] State 1: The front and rear rollers run horizontally along the upper guide rail;

[0048] State 2: The front roller passes through the transition section of the upper guide rail, and the rear roller keeps running horizontally;

[0049] State 3: The front roller runs vertically upward along the guide rail, and the rear roller keeps running horizontally;

[0050] State 4: The front roller keeps running vertically upward along the guide rail, and the rear roller enters the transition section of the upper guide rail;

[0051] State 5: The front and rear rollers keep running vertically along the guide rails.

[0052] The operating trajectories of the gas generator and power turbine are as follows: Figure 7 As shown, the trajectory of the gas turbine's outer contour has no interference with the upper surface of the base frame and the box body, so this solution is feasible.

[0053] (2) Guide rail support structure design

[0054] like Figures 8 to 14As shown, the guide rail support structure mainly includes a guide rail body, a generator lifting flange 5, a power turbine lifting flange 6, a roller assembly, and a support assembly.

[0055] The guide rail body and cavity are C-shaped, matched with rollers, and connected to the support column. They are installed symmetrically on both sides of the gas turbine, and the upper and lower guide rails are fixed by a connecting assembly. The generator lifting flange 5 is connected and fixed to the gas turbine inlet, and the front end can be towed by a lifting tool. The power turbine lifting flange 6 is connected and fixed to the power turbine inlet, while taking into account the supporting role of the rollers, and rollers are installed on both sides. The roller assembly includes three specifications, namely power turbine rollers, generator rollers, and intercooler rollers. The generator support is installed at the front end of the gas generator, and rollers are installed on both sides.

[0056] (3) Calculation of guide rail forces under special working conditions

[0057] According to the state 2, state 3 and state 4 of the gas generator, the stress state of the guide rail is analyzed, among which the change trend of the traction force, the front roller support force and the rear roller support force with the curve angle is as follows: Fig.15 shown.

[0058] The strength of the guide rail stress peak points in the three states was checked. According to the calculation results, the stress at each position was far less than the material yield limit, and the deformation was extremely small, meeting the use requirements.

[0059] The ultimate stress calculation of the gas generator in state 3 is shown in the attached figure. Fig.16 As shown, the maximum stress of the guide rail is 38MPa and the maximum deformation is about 0.3mm.

Claims

1. A long cantilever double-track gas turbine running guide rail device, characterized in that: It includes double guide rails and guide rail support structures. The double guide rails are symmetrically installed on both sides of the gas turbine. The upper and lower guide rails of the double guide rails are fixedly connected by connecting components and connected to the support columns. The front support point of the gas generator is on the horizontal plane of the axis, located at the front end of the generator, and the generator air intake roller runs on the lower guide rail; the rear support point is located on the intercooler, and the generator intermediate roller runs on the upper guide rail; the front and rear support points of the power turbine are on the horizontal plane of the axis, and the power turbine and the front and rear rollers run on the upper guide rail.

2. The long cantilever double-track gas turbine operating guide rail device according to claim 1, characterized in that: The guide rail support structure includes a guide rail body, a generator lifting flange, a power turbine lifting flange, a roller assembly, and a support assembly.

3. The long cantilever double-track gas turbine operating guide rail device according to claim 2, characterized in that: The cavity of the guide rail body is C-shaped and cooperates with the roller.

4. The long cantilever double-track gas turbine operating guide rail device according to claim 2, characterized in that: The generator lifting flange is connected and fixed to the gas turbine inlet, and the front end is pulled by the lifting tool.

5. The long cantilever double-track gas turbine operating guide rail device according to claim 2, characterized in that: The power turbine lifting flange is connected and fixed to the power turbine inlet, while taking into account the supporting function of the rollers, and the rollers are installed on both sides.

6. The long cantilever double-track gas turbine operating guide rail device according to claim 2, characterized in that: The roller assembly includes three specifications, namely power turbine roller, generator roller and intercooler roller.

7. The long cantilever double-track gas turbine operating guide rail device according to claim 2, characterized in that: The generator support in the support assembly is installed at the front end of the gas generator, and rollers are installed on both sides.

Images