Emptying pipeline of axial flow compressor

Abstract

The utility model relates to an emptying pipeline of an axial flow compressor, which mainly solves the problems that foreign matters are easy to fall into the emptying pipeline of the existing axial flow compressor; and when the pipeline is led out, the complexity of leading and distributing the pipeline is high. The lower ends of the first pipelines are mounted on the end face of the exhaust side of an axial flow compressor shell; the lower ends of the multiple first pipelines communicate with the interior of the axial flow compressor. The second pipeline is horizontally arranged; a plurality of mounting holes matched with the upper ends of the first pipelines are formed in the side wall of the second pipeline; the upper ends of the first pipelines penetrate through the corresponding mounting holes to be arranged in the second pipeline and are fixedly connected with the second pipeline.

Description

Technical Field

[0001] The utility model relates to a venting pipeline, in particular to a venting pipeline of an axial flow compressor. Background Art

[0002] The vent pipe is a pipe that discharges the leaked gas from the balance plate seal on the exhaust side of the axial flow compressor and the leaked gas between the casing and the blade bearing cylinder to the atmosphere. Axial flow compressors with air as the medium are equipped with vent pipes regardless of whether the casing is cast or welded.

[0003] refer to Figure 1 and Figure 2 The casing 02 of the existing axial compressor is provided with two vent pipes 01 on the exhaust side end face, and the two vent pipes 01 are respectively discharged upward. This structure has the following defects: the vent pipe is discharged vertically upward, and foreign matter is easy to fall into the pipe; due to the limited space at the installation of the vent pipe, two vent pipes are set separately, the flow area is limited, and the on-site venting noise is large; when the vent pipe is led outside the factory building, the complexity of the pipe routing will be increased. Utility Model Content

[0004] The utility model aims to solve the technical problems that foreign objects are easily dropped into the existing axial flow compressor venting pipeline and the pipe layout is relatively complicated when the pipeline is led out, and to provide a venting pipeline for an axial flow compressor.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A vent pipe of an axial flow compressor comprises a plurality of first pipes whose lower ends are mounted on the exhaust side end surface of a casing of the axial flow compressor; the lower ends of the plurality of first pipes are all connected to the interior of the axial flow compressor;

[0007] Its special features are:

[0008] Also included is a second pipe disposed horizontally;

[0009] The side wall of the second pipe is provided with a plurality of mounting holes respectively matched with the upper ends of the plurality of first pipes; the upper ends of the plurality of first pipes are respectively placed in the second pipe through the corresponding mounting holes and are all fixedly connected to the second pipe;

[0010] Both ends of the second pipeline serve as vents for discharging leaked gas inside the axial flow compressor during on-site venting; or one end serves as a vent for discharging leaked gas inside the axial flow compressor during venting.

[0011] Furthermore, the inner diameter of the second pipe is greater than the inner diameter of the first pipe, thereby increasing the flow area, reducing the flow velocity, and reducing noise.

[0012] Furthermore, a first flange is installed at one end of the second pipe for connecting to an external lead-out pipe to lead the leakage gas inside the axial compressor to a target location for discharge, thereby reducing the complexity of pipe laying and facilitating the leakage gas to be led out to a target location for discharge; a flange cover is installed at the other end.

[0013] Furthermore, the lower end of the first pipe is mounted on the exhaust side end surface of the casing through a second flange, and the middle part thereof is connected to the exhaust side end surface of the casing through a pressing plate.

[0014] Furthermore, the number of the first pipelines is two.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model provides a horizontal second pipeline, merges and connects the first pipeline into the second pipeline, and then uses the two ends of the second pipeline as two vents for the leakage gas inside the axial flow compressor to be discharged, thereby preventing external debris from falling into the pipeline and causing pipeline blockage.

[0017] 2. The utility model increases the flow area by setting the inner diameter of the second pipe to be larger than the inner diameter of the first pipe, thereby reducing the flow velocity and further reducing noise.

[0018] 3. The utility model uses the second pipeline as a venting pipeline, which is convenient for leading the pipeline outside the factory and reducing the difficulty of pipe laying; the first pipeline is used as a delivery pipeline, so that the pipe laying direction of the first pipeline can be flexibly adjusted according to actual conditions, thereby reducing the difficulty of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an existing axial flow compressor venting pipeline;

[0020] Figure 2 yes Figure 1 Left view (partial section view);

[0021] Figure 3 This is a structural schematic diagram of the venting pipeline of the axial flow compressor of the utility model;

[0022] Figure 4 yes Figure 3 Left view (partial section view).

[0023] In the figure:

[0024] 01-first pipe, 02-casing;

[0025] 1-second pipeline, 2-first flange, 3-second flange, 4-pressure plate, 5-flange cover. DETAILED DESCRIPTION

[0026] In order to make the purpose, advantages and features of the utility model clearer, the following is a further detailed description of a vent pipe of an axial flow compressor proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following specific implementation methods, the advantages and features of the utility model will be clearer.

[0027] In the description of the present invention, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] This embodiment provides a venting pipeline for an axial flow compressor, including a plurality of first pipelines 01 whose lower ends are installed on the exhaust side end surface of the axial flow compressor casing 02; Figure 3 and Figure 4 In this embodiment, two first pipes 01 are used as an example for illustration; the lower ends of the two first pipes 01 are both connected to the interior of the axial flow compressor; specifically, the lower end of the first pipe 01 is installed on the exhaust side end face of the casing 02 through the second flange 3, and the middle part is connected to the exhaust side end face of the casing 02 through the pressure plate 4, thereby further enhancing the connection stability of the first pipe 01 and preventing it from shaking and generating noise.

[0029] In order to solve the problem that the upper end of the first pipeline 01 is set vertically upward, which makes it easy for foreign objects from the outside to fall into the pipeline, the venting pipeline of this embodiment also includes a horizontally arranged second pipeline 1; two mounting holes respectively matched with the upper ends of the two first pipelines 01 are provided on the side wall of the second pipeline 1; the upper ends of the two first pipelines 01 are respectively connected to the second pipeline 1 through the corresponding mounting holes, and the connection method of the first pipeline 01 and the second pipeline 1 is preferably welding in this embodiment. In other embodiments of the utility model, bolts, flange connections and the like can also be selected to ensure sufficient sealing; when venting on site, the two ends of the second pipeline 1 are used as venting ports, so that the leakage gas inside the axial flow compressor can first enter the first pipeline 01, then enter the second pipeline 1, and finally be discharged through the two ends of the second pipeline 1.

[0030] When venting on site is selected, if the inner diameter of the second pipe 1 is small, the flow velocity of the leaked gas in the second pipe 1 will be high, thereby generating greater noise; in order to solve this problem, considering the flow characteristics of the fluid, the inner diameter of the second pipe 1 is set larger, so that the inner diameter of the second pipe 1 is larger than the inner diameter of the first pipe 01. In this way, when the leaked gas enters the second pipe 1, due to the larger flow area, its flow velocity will decrease, and the noise generated will also decrease accordingly. Accordingly, the pipe diameter of the first pipe 01 can be set to a small-diameter pipe, so that it can be easily installed in the narrow installation space of the welded casing 02. At the same time, the first pipe 01 can also be set in different pipe layout directions according to the installation needs outside the axial compressor casing 02, so that the installation is more flexible.

[0031] A first flange 2 is installed at one end of the second pipe 1, and a flange cover 5 is installed at the other end. One end of the second pipe 1 is used as a vent. When the leaked gas needs to be led to a target location for discharge, the first flange 2 set at one end of the first pipe can be connected to an external lead-out pipe, so that the leaked gas inside the axial flow compressor can be led to the target location and then discharged. The target location can be any location that the user believes can be discharged, such as outside the factory.

Claims

1. A vent pipe for an axial flow compressor, comprising a plurality of first pipes (01) whose lower ends are mounted on the exhaust side end surface of an axial flow compressor casing (02); the lower ends of the plurality of first pipes (01) are all connected to the interior of the axial flow compressor; Features: It also includes a second pipeline (1) arranged horizontally; A plurality of mounting holes respectively matched with the upper ends of the plurality of first pipes (01) are arranged on the side wall of the second pipe (1); the upper ends of the plurality of first pipes (01) respectively pass through the corresponding mounting holes and are fixedly connected to the second pipes (1); The two ends of the second pipeline (1) serve as vents for discharging leaked gas inside the axial flow compressor during on-site venting; or one end serves as a vent for discharging leaked gas inside the axial flow compressor during venting.

2. The venting pipe of an axial flow compressor according to claim 1, characterized in that: The inner diameter of the second pipe (1) is greater than the inner diameter of the first pipe (01).

3. The venting pipe of an axial flow compressor according to claim 2, characterized in that: A first flange (2) is installed at one end of the second pipe (1) for connecting to an external outlet pipe to guide the leaked gas inside the axial compressor to a target location for discharge; A flange cover (5) is installed at the other end.

4. A venting pipe for an axial flow compressor according to any one of claims 1 to 3, characterized in that: The lower end of the first pipe (01) is mounted on the exhaust side end surface of the casing (02) via a second flange (3), and the middle portion thereof is connected to the exhaust side end surface of the casing (02) via a pressure plate (4).

5. The venting pipe of an axial flow compressor according to claim 4, characterized in that: The number of the first pipes (01) is two.

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