Inlet filter purging device

Abstract

The embodiment of the utility model provides an inlet filter purging device. The inlet filter purging device comprises a low-pressure steam generating device, a low-pressure steam inlet pipeline, a condensate conveying pipeline and a waste liquid tank. Wherein the low-pressure steam generating device is used for generating low-pressure steam; one end of the low-pressure steam inlet pipeline is communicated with the low-pressure steam generating device, the other end of the low-pressure steam inlet pipeline is communicated with the inlet filter of the screw compressor, and low-pressure steam blows the inlet filter, so that impurities are prevented from blocking the inlet filter. The inlet filter is communicated with the waste liquid tank through the condensate conveying pipeline, and after the first steam cleans the inlet filter, generated condensate enters the waste liquid tank through the condensate conveying pipeline, so that the condensate is conveniently collected.

Description

Technical Field

[0001] This application relates to the technical field of gas production, and particularly to a purging device for an inlet filter. Background Art

[0002] In the process of gas production, a screw compressor is needed to compress the gas for convenient storage and transportation.

[0003] In the related art, the gas in the pipeline enters the screw compressor through the inlet filter for compression. However, due to the fact that the gas contains more impurities, the inlet filter of the screw compressor is often blocked, affecting the production efficiency. Utility Model Content

[0004] The embodiments of this application provide a purging device for an inlet filter to solve the problem that the inlet filter is often blocked by impurities.

[0005] The embodiments of this application provide a purging device for an inlet filter, including a low-pressure steam generating device, a low-pressure steam inlet pipeline, a condensate conveying pipeline, and a waste liquid tank;

[0006] The low-pressure steam generating device is used to generate low-pressure steam;

[0007] One end of the low-pressure steam inlet pipeline is communicated with the low-pressure steam generating device, and the other end of the low-pressure steam inlet pipeline is communicated with the inlet filter of the screw compressor, and the low-pressure steam purges the inlet filter;

[0008] The inlet filter is communicated with the waste liquid tank through the condensate conveying pipeline.

[0009] In a feasible implementation manner, the inlet filter includes a gas inlet, a gas outlet, a steam inlet, and a condensate outlet;

[0010] The gas inlet is communicated with the gas inlet pipeline, and the gas outlet is communicated with the gas outlet pipeline;

[0011] One end of the low-pressure steam inlet pipeline away from the low-pressure steam generating device is communicated with the steam inlet;

[0012] The condensate outlet is communicated with the waste liquid tank through the condensate conveying pipeline.

[0013] In a feasible implementation manner, the inlet filter includes a first filter, a second filter, a third filter, and a fourth filter;

[0014] The first filter, the second filter, the third filter, and the fourth filter are respectively communicated with the low-pressure steam generating device through corresponding low-pressure steam inlet pipelines.

[0015] In a feasible implementation, the first filter, the second filter, the third filter, and the fourth filter are respectively connected to the waste liquid tank through corresponding condensate delivery pipelines.

[0016] In a feasible implementation, the outer surface of the low-pressure steam inlet pipeline is coated with a heat-insulating layer.

[0017] In a feasible implementation, the outer surface of the condensate delivery pipeline is coated with a heat-insulating layer.

[0018] In a feasible implementation, the pressure of the waste liquid tank is less than or equal to 5 Kpa.

[0019] In a feasible implementation, the pressure inside the low-pressure steam inlet pipeline is greater than or equal to 0.45 Mpa.

[0020] The embodiment of the present application provides an inlet filter purging device, including a low-pressure steam generating device, a low-pressure steam inlet pipeline, a condensate delivery pipeline, and a waste liquid tank. Among them, the low-pressure steam generating device is used to generate low-pressure steam; one end of the low-pressure steam inlet pipeline is connected to the low-pressure steam generating device, and the other end of the low-pressure steam inlet pipeline is connected to the inlet filter of the screw compressor. The low-pressure steam purges the inlet filter to prevent impurities from clogging the inlet filter. The inlet filter is connected to the waste liquid tank through the condensate delivery pipeline. After the first steam sweeps the inlet filter, the generated condensate enters the waste liquid tank through the condensate delivery pipeline, thus facilitating the collection of condensate. Description of the Drawings

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation of the present invention.

[0022] In the drawings:

[0023] Figure 1 is a schematic structural diagram of the inlet filter purging device provided by an embodiment of the present application;

[0024] Description of the Reference Numerals:

[0025] 100 - Low-pressure steam generating device, 200 - Inlet filter; 300 - Condensate delivery pipeline; 400 - Waste liquid tank; 500 - Gas inlet pipeline; 600 - Gas outlet pipeline; 700 - Low-pressure steam inlet pipeline;

[0026] 210 - First filter; 220 - Second filter; 230 - Third filter; 240 - Fourth filter. Detailed Embodiments

[0027] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0028] In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the process of coal gas production, it is necessary to use a screw compressor to compress the coal gas for easy storage and transportation.

[0030] In the related art, the coal gas in the pipeline enters the screw compressor for compression through the inlet filter 200. However, since the coal gas contains a lot of impurities, the inlet filter 200 of the screw compressor is often blocked, affecting the production efficiency.

[0031] In order to solve the problem that the inlet filter 200 of the screw compressor is often blocked, an embodiment of the present application provides an inlet filter purging device. The solution provided by the embodiment of the present application will be described in detail below in conjunction with the drawings in the specification.

[0032] Figure 1 It is a structural schematic diagram of an inlet filter purge device provided in one embodiment of the present application.

[0033] Reference Figure 1As shown in the figure, an embodiment of the present application provides an import filter purging device, which includes a low-pressure steam generating device 100, a low-pressure steam inlet pipeline 700, a condensate conveying pipeline 300, and a waste liquid tank 400. Among them, the low-pressure steam generating device 100 is used to generate low-pressure steam. One end of the low-pressure steam inlet pipeline 700 is connected to the low-pressure steam generating device 100, and the other end of the low-pressure steam inlet pipeline 700 is connected to the inlet filter 200 of the screw compressor. The low-pressure steam purges the inlet filter 200 to prevent impurities from clogging the inlet filter 200. The inlet filter 200 is connected to the waste liquid tank 400 through the condensate conveying pipeline 300. After the first steam sweeps the inlet filter 200, the condensate generated thereby enters the waste liquid tank 400 through the condensate conveying pipeline 300, facilitating the collection of condensate and avoiding the entry of low-pressure steam into the gas pipeline network. It can be understood that this import filter purging device not only solves the current situation of frequent clogging and frequent switching of the inlet filter 200 of the screw compressor but also reduces the safety risk of steam purging entering the gas pipeline network.

[0034] Continue to refer to Figure 1 As shown in the figure, the inlet filter 200 includes a gas inlet, a gas outlet, a steam inlet, and a condensate outlet. Among them, the gas inlet is connected to the gas inlet pipeline 500, the gas outlet is connected to the gas outlet pipeline 600, and the gas passes through the inlet filter 200 to filter out the impurities therein. One end of the low-pressure steam inlet pipeline 700 far from the low-pressure steam generating device 100 is connected to the steam inlet, and the condensate outlet is connected to the waste liquid tank 400 through the condensate conveying pipeline 300. After the low-pressure steam enters the inlet filter 200 through the steam inlet, it can purge the inside thereof, and the condensate formed during the purging process enters the condensate conveying pipeline 300 through the condensate outlet.

[0035] Continue to refer to Figure 1 As described above, control valves are provided on the low-pressure steam inlet pipeline 700, the condensate conveying pipeline 300, the gas inlet pipeline 500, and the gas outlet pipeline 600 to control the opening and closing of the corresponding pipelines.

[0036] Continue to refer to Figure 1 As shown in the figure, in some examples, the inlet filter 200 includes a first filter 210, a second filter 220, a third filter 230, and a fourth filter 240. The first filter 210, the second filter 220, the third filter 230, and the fourth filter 240 are respectively connected to the low-pressure steam generating device 100 through the corresponding low-pressure steam inlet pipelines 700.

[0037] In addition, the first filter 210, the second filter 220, the third filter 230, and the fourth filter 240 are respectively connected to the waste liquid tank 400 through the corresponding condensate conveying pipelines 300.

[0038] In addition, in some examples, the outer surfaces of the low-pressure steam inlet pipeline 700 and the condensate transfer pipeline 300 are both coated with a heat-insulating layer to insulate them.

[0039] When purging the inlet filter 200 with low-pressure steam, it is necessary to strictly control the opening of the steam inlet valve to ensure that the operating pressure of the waste liquid tank 400 during the purging process is less than or equal to 5 Kpa, and the pressure in the low-pressure steam inlet pipeline 700 is greater than or equal to 0.45 Mpa.

[0040] It is easy to understand that those skilled in the art can combine, split, and reorganize the embodiments of the present application based on several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0041] The above specific implementation manners further elaborate on the purpose, technical solutions, and beneficial effects of the embodiments of the present application. It should be understood that the above are only the specific implementation manners of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. An inlet filter purge device, characterized in that: It comprises a low-pressure steam generating device (100), a low-pressure steam intake pipeline (700), a condensate delivery pipeline (300) and a waste liquid tank (400); The low-pressure steam generating device (100) is used to generate low-pressure steam; One end of the low-pressure steam intake pipeline (700) is in communication with a low-pressure steam generating device (100), and the other end of the low-pressure steam intake pipeline (700) is in communication with an inlet filter (200) of a screw compressor, and the low-pressure steam purges the inlet filter (200); The inlet filter (200) is connected to the waste liquid tank (400) via a condensate delivery pipeline (300).

2. The inlet filter purging device according to claim 1, characterized in that: The inlet filter (200) comprises a gas inlet, a gas outlet, a steam inlet and a condensate outlet; The coal gas inlet is connected to a coal gas inlet pipeline (500), and the coal gas outlet is connected to a coal gas outlet pipeline (600); One end of the low-pressure steam inlet pipeline (700) away from the low-pressure steam generating device (100) is in communication with the steam inlet; The condensate outlet is connected to the waste liquid tank (400) through the condensate delivery pipeline (300).

3. The inlet filter purging device according to claim 1, characterized in that: The inlet filter (200) includes a first filter (210), a second filter (220), a third filter (230) and a fourth filter (240); The first filter (210), the second filter (220), the third filter (230) and the fourth filter (240) are respectively connected to the low-pressure steam generating device (100) through the corresponding low-pressure steam intake pipeline (700).

4. The inlet filter purging device according to claim 3, characterized in that: The first filter (210), the second filter (220), the third filter (230) and the fourth filter (240) are respectively connected to the waste liquid tank (400) through the corresponding condensate delivery pipeline (300).

5. The inlet filter purging device according to claim 1, characterized in that: The outer surface of the low-pressure steam intake pipeline (700) is covered with a thermal insulation layer.

6. The inlet filter purging device according to claim 1, characterized in that: The outer surface of the condensate delivery pipeline (300) is covered with a thermal insulation layer.

7. The inlet filter purging device according to claim 1, characterized in that: The pressure of the waste liquid tank (400) is less than or equal to 5Kpa.

8. The inlet filter purging device according to claim 1, characterized in that: The pressure in the low-pressure steam intake pipeline (700) is greater than or equal to 0.45 MPa.

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