CN214197748U - Restraint support device for high-position arrangement air cooling steam exhaust pipeline - Google Patents

Abstract

The utility model discloses a restraint support device for a high-position arrangement air cooling exhaust pipeline, which comprises a spring bearing structure, a damper structure, a horizontal guide mechanism with a gap and a radial restraint bracket, wherein the spring bearing structure and the damper structure are provided with a plurality of groups under the exhaust pipeline and a turbine interface; the horizontal guide mechanism with the gap is arranged in a group at the center below the steam exhaust pipeline and the steam turbine interface; the radial constraint support is arranged on the steam exhaust pipeline, and the limiting direction of the damper structure and the guiding direction of the horizontal guiding mechanism with the gap are parallel to the axial direction of the steam exhaust pipeline; the expansion of the steam exhaust pipeline to the preset direction is ensured; the vertical force of the steam outlet is adjusted by the spring support structure, so that the steam outlet is uniformly stressed, and the pipeline is linked with the civil engineering structure when the civil engineering structure swings horizontally; the horizontal constraint limiting structure ensures that the steam exhaust pipeline is integrally linked with the steam turbine; the radial constraint and limitation avoid the additional torque of unbalanced stress at the interface of the steam exhaust pipeline.

Description

Restraint support device for high-position arrangement air cooling steam exhaust pipeline

Technical Field

The utility model relates to a thermal power technical field, concretely relates to restraint strutting arrangement who is used for high position to arrange air cooling exhaust pipe among the thermal power system.

Background

With the rapid development of thermal power technology, thermal power generation has become the dominant power industry in China, and accounts for more than 50% of the total power generation amount in China. However, the rapid development of thermal power also faces a series of problems, such as: large carbon dioxide emission, low energy utilization rate, serious environmental pollution and the like.

Therefore, the cleaning and high efficiency of coal and electricity are an important trend. Therefore, researchers at home and abroad propose various routes, such as: IGCC power generation, IGFC power generation, coal cascade utilization power generation (power generation by utilizing semi coke and coke of coal chemical products), high-position arrangement of a steam turbine and the like. However, IGCC, IGFC, cascade utilization are still currently in the demonstration stage due to high construction costs and immaturity of technology. The high-position arrangement of the steam turbine has the advantages of saving the construction cost, reducing the pipeline loss and the like, so that the high-position arrangement of the steam turbine becomes a brand-new efficient utilization direction of coal and electricity. However, the high-position arrangement of the steam turbine also faces a series of engineering problems to be solved urgently, such as the restriction of the steam exhaust pipeline of the high-position arrangement air cooling unit.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art, the utility model provides a brand-new exhaust steam pipe restraint strutting arrangement has not only solved the pipeline and has hung the problem of difficulty, does not have any influence to former arrangement scheme completely moreover, has obviously improved unit security, has important engineering practice and worth.

In order to realize the purpose, the utility model discloses a technical scheme is: the constraint supporting device for the high-position air-cooling steam exhaust pipeline comprises a spring supporting structure, a damper structure, a horizontal guide mechanism with a gap and a radial constraint support, wherein multiple groups of the spring supporting structure and the damper structure are arranged right below the steam exhaust pipeline and a steam turbine interface; the horizontal guide mechanism with the gap is arranged in a group at the center below the steam exhaust pipeline and the steam turbine interface; the radial constraint support is arranged on the steam exhaust pipeline, and the limiting direction of the damper structure and the guiding direction of the horizontal guiding mechanism with the gap are parallel to the axial direction of the steam exhaust pipeline.

The spring supporting structure is symmetrically provided with four groups by the centers of the steam exhaust pipeline and the steam turbine interface.

One end of the damper structure is connected with the foundation, and the other end of the damper structure is connected with the steam exhaust pipeline.

The horizontal guide mechanism with the gap comprises a guide groove connected to the steam exhaust pipeline and a guide block connected to the foundation, and a gap is formed between the guide groove and the guide block.

And a reinforcing rib plate is arranged outside the guide groove.

The radial constraint support comprises two circumferential limiting structures and two axial limiting structures, the circumferential limiting structures are arranged at the top end and the bottom end of the steam exhaust pipeline along the vertical direction, the circumferential limiting structures limit horizontal deviation of the steam exhaust pipeline, the axial limiting structures are arranged on two sides of the steam exhaust pipeline along the horizontal direction, and the axial limiting structures limit axial displacement of the steam exhaust pipeline.

The circumferential limiting structure and the axial limiting structure are arranged on the same cross section of the steam exhaust pipeline.

And a plurality of sets of identical spring supports are arranged in each set of spring support structure.

Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model discloses the restraint supporting scheme is a multilateral restraint scheme that the multiform gallows makes up and uses, has guaranteed that the steam exhaust pipeline can expand to the predetermined direction; a balance spring right below the exhaust port supports and adjusts the vertical force of the exhaust port, so that the exhaust port is uniformly stressed; the horizontal dampers ensure that the pipeline is linked with the civil engineering structure when the civil engineering structure deflects; the horizontal constraint limit with a gap right below the steam outlet ensures that the steam exhaust pipeline is integrally linked with the steam turbine; the radial constraint limit of the combined action of the four sides avoids additional torque caused by unbalanced stress at the interface of the steam exhaust pipeline.

Drawings

FIG. 1 is a schematic illustration of one possible support constraint implementation.

Fig. 2a is a schematic cross-sectional view at the exhaust pipe interface.

Fig. 2b is an enlarged schematic view of the spring support structure at I in fig. 2 a.

Fig. 3 is a schematic view of a damper structure.

Fig. 4 is a schematic view of a horizontal guide mechanism with a gap.

Fig. 5a is a schematic cross-sectional view of a radial restraint limiting structure.

Figure 5b is a side schematic view of a radial restraint limiting structure.

In the drawings: 1-connecting the exhaust pipeline with a steam turbine; 2-a steam exhaust pipeline; 3-a spring support structure; 4-a damper structure; 5-horizontal guide mechanism with gap, 51-guide groove, 52-guide block; 6-radial constraint support, 61-circumferential limit structure and 62-axial limit structure.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 2a, fig. 2b, fig. 5a and fig. 5b, the present invention aims to construct a multi-side multi-form restriction scheme for improving the high-level layout air-cooling steam exhaust pipeline, so as to improve the unit operation safety, and based on this purpose, a high-level layout air-cooling steam exhaust pipeline restriction scheme is designed, which is composed of a steam exhaust pipeline, a steam turbine interface 1, a steam exhaust pipeline 2, a spring support structure 3, a damper structure 4, a horizontal guide mechanism with a gap 5, and radial restriction brackets 6 acting together on four sides; a plurality of groups of spring supporting structures 3 and damper structures 4 are arranged right below the steam exhaust pipeline and the steam turbine interface 1; the horizontal guide mechanisms 5 with gaps are arranged in a group at the center below the steam exhaust pipeline and the steam turbine interface 1; the radial restraint bracket 6 is arranged on the steam exhaust pipeline 2, and the limiting direction of the damper structure 4 and the guiding direction of the horizontal guiding mechanism with the gap 5 are parallel to the axial direction of the steam exhaust pipeline 2.

Referring to fig. 3, the horizontal guide mechanism 5 with a gap includes a guide groove connected to the exhaust pipe 2 and a guide block 52 connected to the base, and a gap is provided between the guide groove 51 and the guide block 52.

A reinforcing rib is provided outside the guide groove 51.

Referring to fig. 1 and 4, a set of damper structures 4 is arranged in the position close to the spring support structures 3, four sets of the spring support structures 3 are symmetrically arranged with the centers of the steam exhaust pipeline and the steam turbine interface 1, one end of each damper structure 4 is connected with the foundation, and the other end of each damper structure 4 is connected with the steam exhaust pipeline 2. As an alternative embodiment, the number of spring support structures 3 and damper structures 4 is the same, but the number of spring support structures 3 and damper structures 4 may also be different.

Referring to fig. 2a and 2b, a plurality of identical sets of spring supports are provided in each set of spring support structures 3.

A restraint support scheme for high level arranges air cooling exhaust steam pipeline has set up simultaneously at the high level respectively the steam extraction pipeline section that direct air cooling unit and steam turbine link to each other: the device comprises a vertical spring supporting structure consisting of four groups of springs, four groups of dampers connected with a steam exhaust pipeline 2 and a civil structure, a guide support with a gap right below the steam exhaust pipeline and 1 group of radial restraining supports 6 commonly restrained by four sides. Compared with the traditional scheme that only a single support hanger is arranged at one pipeline support hanger position, the scheme is a multilateral constraint supporting scheme combining multiple support hangers. On one hand, full restraint is exerted on all directions of the steam exhaust pipeline, and the steam exhaust pipeline can be ensured to expand towards the preset direction, so that the interface force of the steam exhaust pipeline to the steam turbine is reduced; on the other hand, the influence of self deformation of large-caliber thin-wall pipelines such as an exhaust pipeline on the support hanger is effectively overcome, and the running safety of the unit is further improved.

When the steam turbine generator unit normally operates, the spring support structure 3 positioned under the steam exhaust interface can enable the steam exhaust pipeline to normally expand downwards, meanwhile, because the pipe diameter of the steam exhaust pipeline 2 is very large, the steam turbine can be subjected to extra additional force due to self deformation and uneven stress of the pipeline, the spring support structure 3 is formed by four groups of springs together and acts on four supporting points which are symmetrical about the center of 4 lower ends of the steam exhaust pipeline 2 respectively, and the stress uniformity of the steam exhaust pipeline 2 is ensured. Meanwhile, the damper structures 4 are respectively arranged between the civil structure where the spring support structures 3 are located and the pipeline 2, when the steam exhaust pipeline 2 is heated to expand and deform slowly, the damper structures 4 have no constraint effect on the steam exhaust pipeline 2, but when the steam exhaust pipeline 4 is subjected to transient load to generate rapid deformation or the civil structure generates instantaneous displacement swing, the damper structures 4 generate extra additional load on the steam exhaust pipeline 2, so that the steam exhaust pipeline 4 is linked with the civil structure, and the transient load of the steam exhaust pipeline 2 on a steam turbine unit is reduced. In addition, the central position of four groups of spring supporting structures 3, namely the central position of the steam exhaust pipeline and the steam turbine interface 1, is provided with a gap limiting structure 5 along the circumferential direction of the steam exhaust pipeline 2, so that the horizontal section of the steam exhaust pipeline 2 can freely expand along the axial direction in a heated state.

The damper structure 4 and the horizontal guide mechanism 5 with the gap are connected with the foundation through foundation embedded parts.

Finally, a radial restraining bracket 6 with the combined action of four sides as shown in fig. 5a and 5b is arranged at the horizontal section of the exhaust pipeline 2, wherein the upper limit and the lower limit are circumferential limits with gaps to ensure that the horizontal pipeline expands along the axial direction according to a preset direction, and the left side and the right side are axial limits with gaps to avoid the over-limit of the axial displacement of the exhaust pipeline 2 and bring extra thrust to the steam turbine.

Referring to fig. 5a and 5b, as an alternative embodiment, a pipe portion is fixedly arranged on the outer wall of the steam exhaust pipeline 2 where the radial constraint support 6 is arranged, two ends of the pipe portion in the vertical direction diameter are both provided with a slide block, sliding grooves are fixedly arranged on a steel structure/foundation below the steam exhaust pipeline 2 and an upper steel structure, the axis of the sliding groove is parallel to the axis of the steam exhaust pipeline 2, and two ends of the circular ring in the horizontal direction diameter are provided with axial limiting blocks;

or the outer wall that sets up radial restraint support 6 department on exhaust steam pipe 2 is fixed to be set up a ferrule, and the both ends of the vertical direction diameter of ferrule all are provided with a slider, and the fixed spout that sets up on steel construction/the basis of exhaust steam pipe 2 below and the top steel construction, the axis of spout is on a parallel with exhaust steam pipe 2's axis, and the both ends of ring horizontal direction diameter set up the axial stopper.

The radial constraint support 6 comprises two circumferential limiting structures 61 and two axial limiting structures 62, the circumferential limiting structures 61 are arranged at the top end and the bottom end of the steam exhaust pipeline 2 along the vertical direction, the circumferential limiting structures 61 limit the horizontal deviation of the steam exhaust pipeline 2, the axial limiting structures 62 are arranged at two sides of the steam exhaust pipeline 2 along the horizontal direction, and the axial limiting structures 62 limit the axial displacement of the steam exhaust pipeline 2; the circumferential limit structure 61 and the axial limit structure 62 are arranged on the same section of the exhaust steam pipe 2.

Through the above one set of comprehensive multilateral supporting and hanging scheme, the comprehensive multi-directional full constraint of the steam exhaust pipeline 2 is realized, the thrust of the steam exhaust pipeline 2 to the steam turbine is effectively limited, and the safety of unit operation is improved. The present embodiment only describes a typical multilateral restriction scheme of arranging the steam exhaust pipe 2 at a high position, and simply increasing the number of springs or adjusting the restriction position, angle, etc., also belongs to the scope of this patent.

Claims (8)

1. The restraint support device for the high-position air-cooling steam exhaust pipeline is characterized by comprising a spring support structure (3), a damper structure (4), a horizontal guide mechanism (5) with a gap and a radial restraint support (6), wherein multiple groups of the spring support structure (3) and the damper structure (4) are arranged under the steam exhaust pipeline and a steam turbine interface (1); the horizontal guide mechanisms (5) with gaps are arranged in a group at the center below the steam exhaust pipeline and the steam turbine interface (1); the radial restraint support (6) is arranged on the steam exhaust pipeline (2), and the limiting direction of the damper structure (4) and the guiding direction of the horizontal guiding mechanism (5) with the gap are parallel to the axial direction of the steam exhaust pipeline (2).

2. The restraining and supporting device for the high-position air-cooled exhaust duct according to claim 1, wherein the spring bearing structures (3) are arranged in four groups with the exhaust duct being symmetrical with the center of the turbine interface (1).

3. The restraining and supporting device for a high-level layout air-cooled exhaust duct according to claim 1, characterized in that one end of the damper structure (4) is connected with the foundation and the other end is connected with the exhaust duct (2).

4. The restraining and supporting device for a high-level layout air-cooled exhaust duct according to claim 1, characterized in that the horizontal guiding mechanism (5) with gap comprises a guiding groove connected to the exhaust duct (2) and a guiding block (52) connected to the foundation, and a gap is provided between the guiding groove (51) and the guiding block (52).

5. The restraining and supporting device for a high-level layout air-cooled exhaust duct according to claim 4, characterized in that the outside of the guide groove (51) is provided with a reinforcing rib.

6. The restraining and supporting device for the high-position air-cooling exhaust steam pipeline according to claim 1, wherein the radial restraining support (6) comprises two circumferential limiting structures (61) and two axial limiting structures (62), the circumferential limiting structures (61) are arranged at the top end and the bottom end of the exhaust steam pipeline (2) in the vertical direction, the circumferential limiting structures (61) limit horizontal deviation of the exhaust steam pipeline (2), the axial limiting structures (62) are arranged at two sides of the exhaust steam pipeline (2) in the horizontal direction, and the axial limiting structures (62) limit axial displacement of the exhaust steam pipeline (2).

7. The restraining and supporting device for a high-level layout air-cooled exhaust duct according to claim 6, characterized in that the circumferential limiting structure (61) and the axial limiting structure (62) are arranged on the same section of the exhaust duct (2).

8. The restraining and support device for a high-level layout air-cooled exhaust steam duct according to claim 1, characterized in that a plurality of identical sets of spring brackets are provided in each set of spring bearing structures (3).

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