Modular free combination steam turbine test bench

Abstract

The utility model relates to a modularization freely combination steam turbine test bench relates to steam turbine test technical field. To solve the problem of low commonality of existing steam turbine test bench, which is an integral structure and cannot be applied to different models of steam turbine. The front and rear pad box assemblies required for testing are formed by combining multiple pad boxes. The front and rear pad box assemblies are fixedly connected with the guide rails through fixing bolts, so that newly manufactured steam turbines can be tested and detected. If the size of another new steam turbine is larger than that of the previous model, the front extension pad box, the first rear extension pad box and the second rear extension pad box can be used to extend the width or length of the front and rear pad box assemblies, respectively, to meet the testing conditions of the product. The utility model is suitable for testing and detecting different models of new steam turbines.

Description

Technical Field

[0001] This invention relates to the field of steam turbine testing technology, and specifically to a modular, freely combinable steam turbine test bench. Background Technology

[0002] Currently, after the steam turbine products are manufactured, they need to undergo no-load or on-load performance verification tests. Steam turbine products have complex structures and high machining precision; some products require testing together with a reducer after installation. The overall weight of these products can reach hundreds of tons, thus placing high demands on the safety, robustness, and stability of the test bench. Traditional test benches require deep foundations to fix the test chamber. The test chamber is usually a single, integral structure, cast into the foundation. In other words, the entire test bench is a fixed structure from top to bottom, similar to the foundation of a building, with the test chamber acting as the ground level. This ensures that the test bench will not vibrate or deform when the steam turbine is running at high speed.

[0003] Traditional steam turbine test benches cannot arbitrarily adjust the overall width and height of the test chamber or the front-to-back span between the steam turbine and the reducer. However, different models of steam turbine products have different external dimensions and spatial arrangements. Therefore, different models of products have different requirements for the overall width, height, and front-to-back span of the test bench. As a result, traditional steam turbine test benches can only meet the testing needs of one model of product and cannot be used for multiple purposes.

[0004] In recent years, steam turbine products have been continuously updated and upgraded. In order to meet the testing requirements of new products, test benches must be newly built or existing test benches must be extensively modified before testing can be carried out. However, the newly built or modified test benches can only meet the testing needs of one type of steam turbine. If new products need to be tested under no-load or load conditions, test benches must be newly built or modified again. Not only are the construction or modification costs very high, but the construction period is also long. From scheme preparation, bidding and procurement, project construction to acceptance and use, it usually takes about a year, which is time-consuming and labor-intensive.

[0005] In summary, the existing steam turbine test benches are of a single, integrated structure, which makes them unsuitable for different types of steam turbines, resulting in low versatility of the test benches. Summary of the Invention

[0006] This invention addresses the problem that existing steam turbine test benches are integral structures, which cannot be applied to different models of steam turbines, resulting in low versatility. It proposes a modular, freely combinable steam turbine test bench.

[0007] The present invention provides a modular, freely combinable steam turbine test bench, which comprises a front pad assembly 1, a rear pad assembly 2, fixing bolts 10, and n guide rails 14, where n is a positive integer;

[0008] The n guide rails 14 are arranged relatively parallel on the ground, and each guide rail 14 is fixedly connected to the ground through a plurality of anchor bolts. Along the length direction of the guide rail 14, a front cushion box assembly 1 and a rear cushion box assembly 2 are successively provided. Both the front cushion box assembly 1 and the rear cushion box assembly 2 are fixedly connected to the guide rail 14 through fixing bolts 10;

[0009] Furthermore, the front cushion box assembly 1 includes a first front cushion box 3 and a second front cushion box 4; one end face of the first front cushion box 3 is fixedly connected to one end face of the second front cushion box 4;

[0010] Furthermore, between the end faces of the first front cushion box 3 and the second front cushion box 4, they are fixedly connected through a plurality of locking bolts 9;

[0011] Furthermore, the front cushion box assembly 1 further includes a front extension cushion box 11, and the front extension cushion box 11 is arranged between the first front cushion box 3 and the second front cushion box 4;

[0012] Furthermore, one end face of the front extension cushion box 11 is fixedly connected to the end face of the first front cushion box 3 through a locking bolt 9, and the other end face of the front extension cushion box 11 is fixedly connected to the end face of the second front cushion box 4 through a locking bolt 9;

[0013] Furthermore, the rear cushion box assembly 2 includes a first rear cushion box 5, a second rear cushion box 6, a third rear cushion box 7, and a fourth rear cushion box 8;

[0014] The first rear cushion box 5, the second rear cushion box 6, the third rear cushion box 7, and the fourth rear cushion box 8 are arranged in a "return" shape, and between the end faces of the first rear cushion box 5, the second rear cushion box 6, the third rear cushion box 7, and the fourth rear cushion box 8, they are connected through a plurality of locking bolts 9;

[0015] Furthermore, the rear cushion box assembly 2 further includes a first rear extension cushion box 12 and a second rear extension cushion box 13;

[0016] A first rear extension cushion box 12 is provided between the first rear cushion box 5 and the second rear cushion box 6, and a second rear extension cushion box 13 is provided between the third rear cushion box 7 and the fourth rear cushion box 8;

[0017] Furthermore, between the end faces of the first rear cushion box 5, the first rear extension cushion box 12, the second rear cushion box 6, the fourth rear cushion box 8, the second rear extension cushion box 13, and the third rear cushion box 7, they are connected through a plurality of locking bolts 9;

[0018] Furthermore, the number n of the guide rails 14 satisfies 10 ≤ n ≤ 20;

[0019] Furthermore, the installation method of the modular, freely combinable steam turbine test bench of the present invention is as follows:

[0020] Step 1: Design a set of modular, freely combinable mat boxes according to requirements:

[0021] Based on the dimensions of the steam turbine test bench, the pad box is designed as a two-layer structure, with each layer consisting of multiple pad boxes. The multiple pad boxes in each layer and the upper and lower pad boxes are connected by locking bolts 9. The lower pad box is the base pad box; the upper pad box is the adjustment pad box, used to adjust the overall height of the test bench. If the required height of the test bench is relatively low, the upper pad box may not be installed.

[0022] Step 2: Design a set of guide rails required for the installation of the pad box;

[0023] Design and install a set of long strip guide rails according to the maximum size of the test bench required for product testing. The total length and width of the guide rails 14 after installation should be consistent with the total length and width of the test bench.

[0024] Step 3: Arrange multiple guide rails in parallel relative to each other. The span between the parallel guide rails should be consistent, and the distance between the guide rails should be the same as the bolt hole spacing at the bottom of the pad box. This ensures that the pad box can still be fixed to the guide rails after it moves left and right. The front pad box assembly 1 and the rear pad box assembly 2 on the guide rails are connected using screw fixing bolts 10.

[0025] Step 4: Based on the external dimensions of the test specimen, the front pad assembly 1 and the rear pad assembly 2 constitute the test bench. The first front pad 3 and the second front pad 4 are arranged symmetrically, as are the first rear pad 5, the second rear pad 6, the third rear pad 7, and the fourth rear pad 8. These respectively form the front pad assembly 1 and the rear pad assembly 2. If the external dimensions of the test specimen exceed the dimensions of the test bench, the width or length of the front pad assembly 1 and the rear pad assembly 2 are extended using the front extension pad 11, the first rear extension pad 12, and the second rear extension pad 13, respectively, to meet the product's testing conditions and complete the installation of the test bench.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] This invention overcomes the shortcomings of existing technologies by using multiple pad boxes to form the front and rear pad box assemblies required for testing. Both the front and rear pad box assemblies are fixedly connected to the guide rails with fixing bolts, thus enabling the testing and inspection of newly manufactured steam turbines. If the external dimensions of another new type of steam turbine are larger than those of the previous model, the width or length of the front and rear pad box assemblies can be extended using the front extension pad box, the first rear extension pad box, and the second rear extension pad box, respectively, to meet the product's testing conditions. This type of steam turbine test bench can be assembled and spliced ​​according to the external dimensions of different steam turbine models, thereby improving the versatility of the test bench. Attached Figure Description

[0028] Figure 1 This is a main sectional view of the connection between two pad boxes in a modular, freely combinable steam turbine test bench according to the present invention;

[0029] Figure 2 This is a schematic diagram of the connection structure between two pad boxes in a modular, freely combinable steam turbine test bench according to the present invention;

[0030] Figure 3 This is a top view of a modular, freely combinable steam turbine test bench with guide rails removed, as described in this invention.

[0031] Figure 4 This is a schematic diagram of the connection structure between the front pad box assembly, the rear pad box assembly, and the guide rail in a modular free-combination steam turbine test bench according to the present invention.

[0032] Figure 5 This is a schematic diagram showing the connection arrangement between the front pad box assembly, the rear pad box assembly, and the guide rail in a modular free-combination steam turbine test bench according to the present invention.

[0033] Figure 6 This is a top view of a modular, freely combinable steam turbine test bench as described in this invention, in its extended state. Detailed Implementation

[0034] Specific implementation method one: Combining Figures 1 to 5 This embodiment describes a modular, freely combinable steam turbine test bench, which comprises a front gasket assembly 1, a rear gasket assembly 2, fixing bolts 10, and n guide rails 14, where n is a positive integer.

[0035] The n guide rails 14 are arranged parallel to each other on the ground, and each guide rail 14 is fixedly connected to the ground by multiple anchor bolts. A front pad assembly 1 and a rear pad assembly 2 are arranged sequentially along the length direction on the guide rail 14. Both the front pad assembly 1 and the rear pad assembly 2 are fixedly connected to the guide rail 14 by fixing bolts 10.

[0036] Specific Implementation Method Two: Combining Figures 1 to 5 This embodiment further defines the test bench described in Specific Embodiment 1. The modular free-combination steam turbine test bench described in this embodiment includes a front gasket assembly 1 comprising a first front gasket 3 and a second front gasket 4; one end face of the first front gasket 3 is fixedly connected to one end face of the second front gasket 4.

[0037] Specific implementation method three: Combining Figures 1 to 5 This embodiment further defines the test bench described in Specific Embodiment Two. In this embodiment, a modular free-combination steam turbine test bench is provided, wherein the end faces of the No. 1 front pad 3 and the No. 2 front pad 4 are fixedly connected by multiple locking bolts 9.

[0038] Specific implementation method four: Combination Figures 1 to 6 This embodiment further defines the test bench described in Specific Embodiment Two. The modular free-combination steam turbine test bench described in this embodiment includes a front extension pad 11 in the front pad assembly 1, which is disposed between the first front pad 3 and the second front pad 4.

[0039] In this specific embodiment, multiple pad boxes are combined to form the front pad box assembly and the rear pad box assembly required for the test. Both the front pad box assembly and the rear pad box assembly are fixedly connected to the guide rail by fixing bolts, thereby enabling the testing and inspection of newly manufactured steam turbines. If the external dimensions of another new type of steam turbine are larger than those of the previous model, the width or length of the front pad box assembly and the rear pad box assembly can be extended using the front extension pad box, the first rear extension pad box, and the second rear extension pad box, respectively, to meet the product's testing conditions. This type of steam turbine test bench can be assembled and spliced ​​according to the external dimensions of different models of steam turbines, thereby improving the versatility of the test bench.

[0040] Specific Implementation Method Five: Combining Figures 1 to 6Describing this embodiment, this embodiment is a further limitation of the test bench described in the fourth specific embodiment. For a modular and freely combinable steam turbine test bench described in this embodiment, one end face of the front extension cushion box 11 is fixedly connected to the end face of the first front cushion box 3 through a locking bolt 9, and the other end face of the front extension cushion box 11 is fixedly connected to the end face of the second front cushion box 4 through a locking bolt 9.

[0041] Specific embodiment six: Combining Figures 1 to 5 Describing this embodiment, this embodiment is a further limitation of the test bench described in the first specific embodiment. For a modular and freely combinable steam turbine test bench described in this embodiment, the rear cushion box assembly 2 includes a first rear cushion box 5, a second rear cushion box 6, a third rear cushion box 7, and a fourth rear cushion box 8;

[0042] The first rear cushion box 5, the second rear cushion box 6, the third rear cushion box 7, and the fourth rear cushion box 8 are arranged in a "return" shape, and the end faces of the first rear cushion box 5, the second rear cushion box 6, the third rear cushion box 7, and the fourth rear cushion box 8 are connected through a plurality of locking bolts 9;

[0043] In this specific embodiment, the first rear cushion box 5, the second rear cushion box 6, the third rear cushion box 7, and the fourth rear cushion box 8 are arranged in a "return" shape, which is convenient for connecting the oil pipes of the steam turbine to the outside through the central hole of the rear cushion box assembly 2 during the test.

[0044] Specific embodiment seven: Combining Figures 1 to 6 Describing this embodiment, this embodiment is a further limitation of the test bench described in the sixth specific embodiment. For a modular and freely combinable steam turbine test bench described in this embodiment, the rear cushion box assembly 2 further includes a first rear extension cushion box 12 and a second rear extension cushion box 13;

[0045] A first rear extension cushion box 12 is provided between the first rear cushion box 5 and the second rear cushion box 6, and a second rear extension cushion box 13 is provided between the third rear cushion box 7 and the fourth rear cushion box 8.

[0046] Specific embodiment eight: Combining Figures 1 to 6 Describing this embodiment, this embodiment is a further limitation of the test bench described in the seventh specific embodiment. For a modular and freely combinable steam turbine test bench described in this embodiment, the end faces of the first rear cushion box 5, the first rear extension cushion box 12, the second rear cushion box 6, the fourth rear cushion box 8, the second rear extension cushion box 13, and the third rear cushion box 7 are connected through a plurality of locking bolts 9.

[0047] Specific embodiment nine: Combining Figures 1 to 6This embodiment further defines the test bench described in Specific Embodiment 1. In this embodiment, a modular free-combination steam turbine test bench is provided, wherein the number n of the guide rails 14 is 10 ≤ n ≤ 20.

[0048] Specific Implementation Method Ten: Combining Figures 1 to 6 This embodiment describes the installation method of a modular, freely combinable steam turbine test bench as follows:

[0049] Step 1: Design a set of modular, freely combinable mat boxes according to requirements:

[0050] Based on the dimensions of the steam turbine test bench, the pad box is designed as a two-layer structure, with each layer consisting of multiple pad boxes. The multiple pad boxes in each layer and the upper and lower pad boxes are connected by locking bolts 9. The lower pad box is the base pad box; the upper pad box is the adjustment pad box, used to adjust the overall height of the test bench. If the required height of the test bench is relatively low, the upper pad box may not be installed.

[0051] Step 2: Design a set of guide rails required for the installation of the pad box;

[0052] Design and install a set of long strip guide rails according to the maximum size of the test bench required for product testing. The total length and width of the guide rails 14 after installation should be consistent with the total length and width of the test bench.

[0053] Step 3: Arrange multiple guide rails in parallel relative to each other. The span between the parallel guide rails should be consistent, and the distance between the guide rails should be the same as the bolt hole spacing at the bottom of the pad box. This ensures that the pad box can still be fixed to the guide rails after it moves left and right. The front pad box assembly 1 and the rear pad box assembly 2 on the guide rails are connected using screw fixing bolts 10.

[0054] Step 4: Based on the external dimensions of the test specimen, the front pad assembly 1 and the rear pad assembly 2 constitute the test bench. The first front pad 3 and the second front pad 4 are arranged symmetrically, as are the first rear pad 5, the second rear pad 6, the third rear pad 7, and the fourth rear pad 8. These respectively form the front pad assembly 1 and the rear pad assembly 2. If the external dimensions of the test specimen exceed the dimensions of the test bench, the width or length of the front pad assembly 1 and the rear pad assembly 2 are extended using the front extension pad 11, the first rear extension pad 12, and the second rear extension pad 13, respectively, to meet the product's testing conditions and complete the installation of the test bench.

Claims

1. A modular, freely combinable steam turbine test bench, characterized in that: It includes a front cushion box assembly (1), a rear cushion box assembly (2), fixing bolts (10) and n guide rails (14), where n is a positive integer; The n guide rails (14) are arranged relatively parallel on the ground, and each guide rail (14) is fixedly connected to the ground through multiple anchor bolts. Along the length direction of the guide rail (14), a front cushion box assembly (1) and a rear cushion box assembly (2) are successively provided. Both the front cushion box assembly (1) and the rear cushion box assembly (2) are fixedly connected to the guide rail (14) through the fixing bolts (10).

2. The modular, freely combinable steam turbine test bench according to claim 1, characterized in that: The front cushion box assembly (1) includes a first front cushion box (3) and a second front cushion box (4); one end face of the first front cushion box (3) is fixedly connected to one end face of the second front cushion box (4).

3. The modular, freely combinable steam turbine test bench according to claim 2, characterized in that: Between the end faces of the first front cushion box (3) and the second front cushion box (4), they are fixedly connected through multiple locking bolts (9).

4. The modular, freely combinable steam turbine test bench according to claim 2, characterized in that: The front cushion box assembly (1) further includes a front extension cushion box (11), and the front extension cushion box (11) is arranged between the first front cushion box (3) and the second front cushion box (4).

5. A modular, freely combinable steam turbine test bench according to claim 4, characterized in that: One end face of the front extension cushion box (11) is fixedly connected to the end face of the first front cushion box (3) through a locking bolt (9), and the other end face of the front extension cushion box (11) is fixedly connected to the end face of the second front cushion box (4) through a locking bolt (9).

6. The modular, freely combinable steam turbine test bench according to claim 1, characterized in that: The rear cushion box assembly (2) includes a first rear cushion box (5), a second rear cushion box (6), a third rear cushion box (7) and a fourth rear cushion box (8); The first rear cushion box (5), the second rear cushion box (6), the third rear cushion box (7) and the fourth rear cushion box (8) are arranged in a "return" shape, and between the end faces of the first rear cushion box (5), the second rear cushion box (6), the third rear cushion box (7) and the fourth rear cushion box (8), they are connected through multiple locking bolts (9).

7. A modular, freely combinable steam turbine test bench according to claim 6, characterized in that: The rear cushion box assembly (2) further includes a first rear extension cushion box (12) and a second rear extension cushion box (13); A first rear extension cushion box (12) is provided between the first rear cushion box (5) and the second rear cushion box (6), and a second rear extension cushion box (13) is provided between the third rear cushion box (7) and the fourth rear cushion box (8).

8. A modular, freely combinable steam turbine test bench according to claim 7, characterized in that: Between the end faces of the first rear cushion box (5), the first rear extension cushion box (12), the second rear cushion box (6), the fourth rear cushion box (8), the second rear extension cushion box (13) and the third rear cushion box (7), they are connected through multiple locking bolts (9).

9. A modular, freely combinable steam turbine test bench according to claim 1, characterized in that: The number n of the guide rails (14) satisfies 10 ≤ n ≤ 20.

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