CN216952168U

CN216952168U - Interface structure of exhaust device

Info

Publication number: CN216952168U
Application number: CN202220097987.3U
Authority: CN
Inventors: 魏佳明; 徐志明; 卢康; 余沛坰; 李冬青; 白东方; 任其航; 薛彬彬; 薛临风
Original assignee: Hangzhou Steam Turbine Co Ltd
Current assignee: Hangzhou Steam Turbine Power Group Co Ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-07-12
Anticipated expiration: 2032-01-14

Abstract

The utility model discloses an interface structure of an exhaust device, which relates to the technical field of industrial exhaust devices and comprises the following components: the exhaust device is provided with at least one vent hole; the connecting pipe is arranged corresponding to the vent hole; the corrugated expansion joint is sleeved on the connecting pipe. The utility model provides an exhaust apparatus interface structure can be so that a plurality of connecting pipes connect in parallel on exhaust apparatus, when leading to the medium of different temperature and pressure in each connecting pipe, can absorb different deflection through the ripple expansion joint that corresponds, and mutually noninterfere between each connecting pipe to effectively reduce the destructiveness that pipeline power and moment that produce because of the thermal expansion led to the fact connecting pipe and exhaust apparatus, improve the safe handling nature of whole device.

Description

Interface structure of exhaust device

Technical Field

The utility model relates to the technical field of industrial exhaust devices, in particular to an interface structure of an exhaust device.

Background

Generally, when a compressor unit is in test run, air is extracted from different stages of the unit to adjust the flow, and simultaneously residual air is discharged into an exhaust device together. However, because the diameter of each pipeline, the temperature and the pressure of a medium in the pipeline are very different, and parameters such as the temperature, the pressure, the flow rate and the like in the pipeline are high, the variation range is large, and the parameters are generally 0.1-5 MPa, 200-500 ℃ and 50-150 m/s, the pipeline force and the moment are easily generated at the position where each pipeline is connected with the exhaust device, if a certain mode is not adopted for compensation, very high stress can be generated, and damage to the connecting pipe and the exhaust device is generated to different degrees. In order to avoid the above-mentioned damage phenomenon, a corrugated expansion joint is generally arranged between each connecting pipe and the exhaust device, but most of the existing corrugated expansion joints are easily damaged when used in a severe environment, have short service life and are not easy to disassemble and replace; or, the compound corrugated expansion joint is installed on the exhaust device section, but because the thermal expansion amount of each connecting pipe is different, the structure can cause the connecting pipes to be involved when being deformed, and the destructive force caused by thermal expansion cannot be well avoided.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model provides an exhaust device interface structure, which can prolong the service life of a corrugated expansion joint and ensure that a plurality of connecting pipes are not interfered with each other.

2. Technical scheme

In order to solve the problems, the technical scheme provided by the utility model is as follows:

an exhaust interface structure comprising: the exhaust device is provided with at least one vent hole; the connecting pipe is arranged corresponding to the vent hole; the corrugated expansion joint is sleeved on the connecting pipe.

In this application, the connecting pipe passes through the air vent with exhaust apparatus is linked together, when the air vent has a plurality ofly, the connecting pipe has a plurality ofly, a plurality of connecting pipes respectively through corresponding air vent with exhaust apparatus is linked together, and the cover has the ripple expansion joint on every connecting pipe, this setting makes a plurality of connecting pipes connect in parallel on exhaust apparatus, when the medium of different temperatures and pressure of leading to in each connecting pipe, can absorb different deflection through the ripple expansion joint that corresponds, and mutual noninterference between each connecting pipe to effectively reduce the destructiveness because of pipeline and the moment that the thermal expansion produced causes connecting pipe and exhaust apparatus, improve the safety in utilization of whole device. Meanwhile, the corrugated expansion joint is sleeved on the connecting pipe, so that the requirements on the pressure, the temperature and the flow rate of the corrugated expansion joint during the type selection of the corrugated expansion joint can be effectively reduced, the service life of the corrugated expansion joint can be prolonged, and the use safety of the whole device is improved; when the corrugated expansion joint is damaged, only a single corrugated expansion joint needs to be replaced, and further the cost is reduced.

Optionally, when there are a plurality of connecting pipes, the flow area of the exhaust device is larger than the sum of the flow areas of the plurality of connecting pipes.

Optionally, the vent hole diameter is larger than the connecting tube outer diameter.

Optionally, a gap is formed between the vent hole and the connecting pipe, and the size d1 of the gap is 5mm-60 mm.

Optionally, an air inlet panel is arranged on the exhaust device, and the vent hole is formed in the air inlet panel.

Optionally, a first flange and a second flange are respectively arranged at two ends of the corrugated expansion joint, the first flange is welded on the connecting pipe, and the second flange is fixed on the exhaust device through a bolt.

Optionally, a sealing gasket is arranged between the second flange and the exhaust device.

Optionally, a gap is formed between the connecting pipe and the corrugated expansion joint, and the size d2 of the gap is 5mm-60 mm.

Optionally, the inner diameter of the first flange is smaller than the outer diameter of the vent hole.

Optionally, the outer diameter of the connecting pipe is 60-500mm, the pressure of a medium in the connecting pipe is 0.1-5 MPa, and the temperature is 200-500 ℃.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) the embodiment of the application provides an exhaust apparatus interface structure, simple structure, the connecting pipe passes through the air vent with exhaust apparatus is linked together, when the air vent has a plurality ofly, the connecting pipe has a plurality ofly, a plurality of connecting pipes respectively through corresponding air vent with exhaust apparatus is linked together, and the cover has the ripple expansion joint on every connecting pipe, this setting makes a plurality of connecting pipes connect in parallel on exhaust apparatus, when the medium of different temperature and pressure of leading to in each connecting pipe, can absorb different deflection through the ripple expansion joint that corresponds, and mutual noninterference between each connecting pipe to effectively reduce the destructiveness that causes connecting pipe and exhaust apparatus because of the pipeline power and the moment that the thermal expansion produced, improve the safety and usability of whole device. Meanwhile, the corrugated expansion joint is sleeved on the connecting pipe, so that the requirements on the pressure, the temperature and the flow rate of the corrugated expansion joint during the type selection of the corrugated expansion joint can be effectively reduced, the service life of the corrugated expansion joint can be prolonged, and the use safety of the whole device is improved; when the corrugated expansion joint is damaged, only a single corrugated expansion joint needs to be replaced, and further the cost is reduced.

(2) According to the interface structure of the exhaust device provided by the embodiment of the application, through setting, the through-flow area in the exhaust device is larger than the sum of the through-flow areas of the connecting pipes, so that the effect of decelerating and diffusing airflow can be achieved.

(3) The utility model provides an exhaust apparatus interface structure, through setting up the air vent diameter is greater than the connecting pipe external diameter and air vent and clearance size d1 between the connecting pipe is 5mm-60mm, can guarantee that the connecting pipe can freely expand in the air vent that corresponds at the during operation.

(4) The utility model provides an exhaust apparatus interface structure through setting up the panel of admitting air for when cold state, the panel of admitting air can regard as a support of connecting pipe, bears the partial gravity of connecting pipe.

(5) The utility model provides an exhaust apparatus interface structure, through setting up the internal diameter of first flange is less than during the external diameter of air vent can prevent to get into the bellows in the bellows of the quick inflow ripple expansion joint of the gas in the connecting tube, reduces the life-span loss to the bellows, and then improves the life of ripple expansion joint.

Drawings

Fig. 1 is a schematic structural diagram of an interface structure of an exhaust apparatus according to an embodiment of the present invention.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.

Example 1

With reference to fig. 1, the present embodiment provides an interface structure of an exhaust apparatus, including: the exhaust device 1 is provided with at least one vent hole 2; the connecting pipe 3 is arranged corresponding to the vent hole 2; a corrugated expansion joint 4, wherein the corrugated expansion joint 4 is sleeved on the connecting pipe 3.

In this application, connecting pipe 3 passes through air vent 2 with exhaust apparatus 1 is linked together, when air vent 2 has a plurality ofly, connecting pipe 3 has a plurality ofly, a plurality of connecting pipes 3 respectively through corresponding air vent 2 with exhaust apparatus 1 is linked together, and the cover has ripple expansion joint 4 on every connecting pipe 3, this setting makes a plurality of connecting pipes 3 parallelly connected on exhaust apparatus 1, when leading to the medium of different temperature and pressure in each connecting pipe 3, can absorb different deflection through corresponding ripple expansion joint 4, and mutual noninterference between each connecting pipe 3 to effectively reduce the destructiveness that causes connecting pipe 3 and exhaust apparatus 1 because of pipeline and the moment that the thermal expansion produced, improve the safety and usability of whole device. Meanwhile, the corrugated expansion joint 4 is sleeved on the connecting pipe 3, the arrangement can effectively reduce the requirements on the pressure, the temperature and the flow rate of the corrugated expansion joint 4 when the corrugated expansion joint 4 is in a model selection state, and can prolong the service life of the corrugated expansion joint 4, thereby improving the use safety of the whole device; when the corrugated expansion joint 4 is damaged, only a single corrugated expansion joint 4 needs to be replaced, and the cost is further reduced.

Example 2

Compared with the technical scheme of the embodiment 1, the interface structure of the exhaust device of the embodiment can be improved as follows: when the number of the connection pipes 3 is plural, the area through which the gas flows in the exhaust device 1 is larger than the sum of the flow areas of the plural connection pipes 3. This arrangement can achieve the effect of decelerating and diffusing the airflow.

Example 3

Compared with the technical scheme of the embodiment 1 or 2, the interface structure of the exhaust device of the embodiment can be improved as follows: the diameter of the vent hole 2 is larger than the outer diameter of the connecting pipe 3. This arrangement ensures that the connecting tube 3 can expand freely within the corresponding vent 2 during operation.

Example 4

Compared with the technical scheme of the embodiment 3, the interface structure of the exhaust device of the embodiment can be improved as follows: a gap is arranged between the vent hole 2 and the connecting pipe 3, and the size d1 of the gap is 5-60 mm. This arrangement further ensures that the connecting tube 3 is free to expand within the corresponding vent 2 during operation.

Example 5

With reference to fig. 1, compared with the technical solution of embodiment 1, the interface structure of the exhaust apparatus of the present embodiment may be improved as follows: an air inlet panel 7 is arranged on the exhaust device 1, and the vent holes 2 are formed in the air inlet panel 7. By arranging the air inlet panel 7, the air inlet panel 7 can be used as a support of the connecting pipe 3 and bear part of the gravity of the connecting pipe 3 in a cold state.

Example 6

With reference to fig. 1, compared with the technical solution of embodiment 1, the interface structure of the exhaust apparatus of the present embodiment may be improved as follows: the two ends of the corrugated expansion joint 4 are respectively provided with a first flange 5 and a second flange 6, the first flange 5 is welded on the connecting pipe 3, and the second flange 6 is fixed on the exhaust device 1 through a bolt 8. This arrangement ensures the securement of the bellows expansion joint 4 to the connection pipe 3 and the exhaust device 1.

Example 7

Compared with the technical scheme of the embodiment 6, the interface structure of the exhaust device of the embodiment can be improved as follows: a sealing gasket is arranged between the second flange 6 and the exhaust device 1. This arrangement increases the tightness between the second flange 6 and the exhaust device 1.

Example 8

Compared with the technical scheme of the embodiment 6, the interface structure of the exhaust device of the embodiment can be improved as follows: a gap is formed between the connecting pipe 3 and the corrugated expansion joint 4, and the size d2 of the gap is 5-60 mm. This arrangement ensures that there is no interference between the connecting tube 3 and the bellows expansion joint 4 during operation.

Example 9

Compared with the technical scheme of the embodiment 6, the interface structure of the exhaust device of the embodiment can be improved as follows: the inner diameter of the first flange 5 is smaller than the outer diameter of the vent hole 2. This setting can prevent to get into the gas in the connecting pipe 3 and flow into the bellows in the ripple expansion joint 4 fast, reduces the life-span loss to the bellows, and then improves the life of ripple expansion joint 4.

Example 10

Compared with the technical scheme of the embodiment 1, the interface structure of the exhaust device of the embodiment can be improved as follows: the outer diameter of the connecting pipe 3 is 60-500mm, the pressure of a medium in the connecting pipe 3 is 0.1-5 MPa, and the temperature is 200-500 ℃. When the connecting pipes 3 are filled with media with different temperatures and pressures, the connecting pipes 3 can absorb different deformation amounts during working, and the connecting pipes 3 do not interfere with each other.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. An exhaust interface structure, comprising:

the exhaust device is provided with at least one vent hole;

the connecting pipe is arranged corresponding to the vent hole;

the corrugated expansion joint is sleeved on the connecting pipe.

2. The exhaust interface structure of claim 1, wherein when the connection pipe has a plurality of connection pipes, the flow area through the exhaust is larger than the sum of the flow areas of the plurality of connection pipes.

3. The exhaust interface structure of claim 1 or 2, wherein the vent hole diameter is greater than the connecting tube outer diameter.

4. The exhaust interface structure of claim 3 wherein said vent hole has a gap with said connecting tube, said gap having a size d1 of 5mm-60 mm.

5. The exhaust interface structure of claim 1 wherein the exhaust is provided with an intake panel and the vent is provided on the intake panel.

6. An exhaust interface structure according to claim 1, wherein a first flange and a second flange are provided at both ends of the bellows expansion joint, respectively, the first flange is welded to the connection pipe, and the second flange is fixed to the exhaust unit by a bolt.

7. An exhaust interface structure as claimed in claim 6, wherein a sealing gasket is provided between said second flange and said exhaust.

8. The exhaust interface structure of claim 6 wherein said connecting tube and said bellows expansion joint have a gap therebetween, said gap having a size d2 of 5mm to 60 mm.

9. The exhaust interface structure of claim 6, wherein an inner diameter of said first flange is smaller than an outer diameter of said vent hole.

10. The interface structure of an exhaust device according to claim 1, wherein the outer diameter of the connection pipe is 60 to 500mm, the pressure of the medium in the connection pipe is 0.1 to 5MPa, and the temperature is 200 to 500 ℃.