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

Abstract

The utility model relates to a long cantilever double rail type gas turbine running guide rail device which 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 and out of a box for assembly is improved.

Description

Technical Field

[0001] The utility model 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 utilizes the space within the gas turbine's inlet duct, coordinates the rail track with the operating tooling, and rotates the two main structures—the gas generator and power turbine—from a horizontal to a vertical orientation, allowing the gas turbine to operate outside the casing. Currently, gas turbine casings utilize a single-track operating rail, with the front and rear support rollers on the same side running within the same rail. This creates a risk of interference between the farthest point of the turbine's outer contour and the chassis. Due to the small casing radius of the core engine area of ​​indirect-cooled gas turbines, the span of the rail support tooling is too long, resulting in poor operational stability. Summary of the Invention

[0003] The utility model 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 support tooling span and improving the stability of the gas turbine in and out of the box body.

[0004] To achieve the above-mentioned purpose, the solution of the utility model is: a long cantilever dual-track gas turbine operating guide rail device, including dual guide rails and guide rail support structures, the dual guide rails are symmetrically installed on both sides of the gas turbine, and the upper and lower guide rails of the dual guide rails are fixedly connected by a connecting assembly and connected to the support column; 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 middle roller of the generator 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 role of the rollers, and rollers are installed on both sides.

[0009] Furthermore, the roller assembly includes three specifications, namely power turbine roller, generator roller, and 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 utility model are:

[0012] The utility model adopts front and rear rollers located in two guide rail grooves respectively, running along different tracks. The dual-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 in and out of the box body.

[0013] Based on the turbine's outer contour, the operating space within the gas turbine housing is smaller than that of a single-track guide rail system. The guide rails also withstand greater local forces under specific operating conditions than single-track systems. This dual-track gas turbine operating guide rail system has been used in an indirect-cooling gas turbine housing project with positive 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 gas generator operating status;

[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 operating trajectory;

[0022] Where: a is the operating trajectory of the gas generator, b is the operating trajectory of the power turbine;

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

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

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

[0026] Figure 11 yes Figure 10 Left sectional view of

[0027] Figure 12 yes Figure 10 Right view;

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

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

[0030] Figure 14 is a schematic diagram of the generator inlet support in the gas turbine guide rail support structure;

[0031] Figure 15 This is the force variation trend diagram of the guide rail at the front and rear rollers;

[0032] Among them: a is state two, b is state three, and c is state four. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] like Figures 1 to 15 As shown, the utility model is a long cantilever double-track gas turbine operating guide rail device, which includes a double-track hoisting track design scheme, a guide rail support structure design scheme, and a special working condition guide rail strength simulation calculation.

[0035] (1) Guide rail hoisting trajectory design

[0036] 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 trajectory of the double guide rail 1 can meet the lifting and reinstallation actions of the generator and power turbine.

[0037] 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 guide 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 middle roller 4 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 horizontal position of the front and rear rollers 7 is raised to 450mm above the axis through the support assembly, and the front and rear rollers 7 run on the upper guide rail. The matching method of the gas turbine support point and the double-layer guide rail 1 is as follows Figures 1 to 5 shown.

[0038] like Figure 6As shown, the gas generator roller operation process includes the following states:

[0039] State one: the front and rear rollers run horizontally along the guide rail respectively;

[0040] State two: the front roller passes through the lower guide rail transition section, and the rear roller keeps horizontal running;

[0041] State three: the front roller runs vertically upward along the guide rail, and the rear roller keeps horizontal running;

[0042] State four: the front roller keeps vertical upward running along the guide rail, and the rear roller enters the upper guide rail transition section;

[0043] State five: the front and rear rollers keep vertical running along the guide rail.

[0044] The power turbine roller operation process includes the following states:

[0045] State one: the front and rear rollers keep horizontal running along the upper guide rail;

[0046] State two: the front roller passes through the upper guide rail transition section, and the rear roller keeps horizontal running;

[0047] State three: the front roller runs vertically upward along the guide rail, and the rear roller keeps horizontal running;

[0048] State four: the front roller keeps vertical upward running along the guide rail, and the rear roller enters the upper guide rail transition section;

[0049] State five: the front and rear rollers keep vertical running along the guide rail.

[0050] The running trajectories of the gas generator and the power turbine are as shown in Figure 7 The gas turbine outer contour trajectory does not interfere with the chassis and the upper surface of the box body, and this scheme is feasible.

[0051] (2) Guide rail support structure design

[0052] As shown in Figures 8 to 14 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.

[0053] The guide rail body and the cavity adopt a C-shaped structure, cooperate with the rollers, and are connected with the support columns. The gas turbine is symmetrically installed on both sides, and the upper and lower guide rails are fixed through the connecting assembly. The generator lifting flange 5 is connected and fixed with the gas turbine inlet, and the front end can be pulled by lifting tools. The power turbine lifting flange 6 is connected and fixed with the power turbine inlet, and also serves as the support of the roller, and the rollers are installed on both sides. The roller assembly includes three specifications, namely, the power turbine roller, the generator roller, and the intercooler roller. The generator support is installed at the front end of the gas generator, and the rollers are installed on both sides.

[0054] (3) Calculation of guide rail forces under special working conditions

[0055] 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: Figure 15 shown.

[0056] The strength of the guide rail was checked for the peak stress points in the three states. According to the calculation results, the stress at each position was far less than the yield limit of the material, and the deformation was extremely small, meeting the use requirements.

Claims

1. A long cantilever dual-track gas turbine operating guide rail device, characterized in that: It includes double guide rails and guide rail support structure. 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 middle roller of the generator 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 dual-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 dual-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 dual-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 dual-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 rollers are installed on both sides.

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

7. The long cantilever dual-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.

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