Micro differential pressure detection system

Abstract

The utility model discloses a micro differential pressure detection system, which comprises an annular pressure tapping device, the annular pressure tapping device is communicated with a pressure tapping port on a flue gas duct, through holes are arranged at the connection position of the annular pressure tapping device and the pressure tapping port, and the through holes are connected with pipelines; a back flushing device is arranged at one end of the annular pressure taking device, a plurality of pipelines are arranged below the annular pressure taking device, after water leaks from the flue, accumulated water flows into the pipelines under the action of gravity, and the pipelines are opened through ball valves at the tail ends of the pipelines to drain the accumulated water and prevent scab; the reverse blowing device is used for carrying out nitrogen reverse blowing on the annular pressure tapping device and regularly cleaning and dredging the annular pressure tapping device, so that the fault rate of the micro-differential pressure system is reduced, and the flue gas recovery rate of the converter is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of converter detection, in particular to a micro differential pressure detection system. Background Art

[0002] The converter micro-differential pressure detection system is an important control system for converter flue gas recovery. Whether it works properly or not plays a very important role in improving the recovery efficiency of converter flue gas.

[0003] In the prior art, the detection annular pressure taking device is usually installed in the inner bend of the inclined flue. Due to water leakage in the inclined flue and high temperature and humidity, water accumulates and forms crusts in the annular pressure taking tube, making it impossible for the micro-differential pressure detection system to take pressure, resulting in distortion of instrument data and affecting gas recovery and production.

[0004] Therefore, the utility model provides a micro differential pressure detection system to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A micro differential pressure detection system, comprising an annular pressure taking device,

[0007] The annular pressure taking device is connected with the pressure taking port on the flue gas duct, and a through hole is opened at the connection position of the annular pressure taking device with the pressure taking port, and a pipeline is connected to the through hole; a back-blowing device is provided at one end of the annular pressure taking device.

[0008] A further solution: ball valves are provided on the pipelines.

[0009] A further solution: the backflush device comprises a nitrogen source, and a solenoid valve is provided between the nitrogen source and the annular pressure taker.

[0010] A further solution: the annular pressure taking device is also connected to a differential pressure transmitter.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By setting up multiple pipes under the annular pressure device, when the flue leaks, the accumulated water flows into the pipe under the action of gravity. The ball valve at the end of the pipe is opened to drain the accumulated water to prevent scabbing. The annular pressure device is backflushed with nitrogen through the backflushing device, and the annular pressure device is regularly cleaned and unblocked, which reduces the failure rate of the micro-differential pressure system and improves the converter flue gas recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0014] Figure 1 This is a structural schematic diagram of a micro differential pressure detection system.

[0015] In the figure: 1. Flue gas duct; 2. Annular pressure taking device; 3. Pipeline; 4. Ball valve; 5. Backflush device; 6. Differential pressure transmitter. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1 In an embodiment of the utility model, a micro differential pressure detection system includes an annular pressure taking device 2, which is connected to a pressure taking port on a flue gas duct 1. The annular pressure taking device 2 is provided with a through hole at a position where it is connected to the pressure taking port, and a pipeline 3 is connected to the through hole; a back-blowing device 5 is provided at one end of the annular pressure taking device 2.

[0019] Compared with the prior art, the embodiment of the utility model provides a micro differential pressure detection system, which arranges multiple pipes 3 under the annular pressure taking device 2. When the flue leaks, the accumulated water flows into the pipes 3 under the action of gravity. The ball valve 4 at the end of the pipes 3 is opened to drain the accumulated water and prevent scabbing. The annular pressure taking device 2 is backflushed with nitrogen through the backflushing device 5, and the annular pressure taking device 2 is regularly cleaned and unblocked, thereby reducing the failure rate of the micro differential pressure system and improving the converter flue gas recovery rate.

[0020] Furthermore, a ball valve 4 is provided on each pipeline 3 , the back-blowing device 5 comprises a nitrogen source, an electromagnetic valve is provided between the nitrogen source and the annular pressure taking device 2 , and the annular pressure taking device 2 is also connected to a differential pressure transmitter 6 .

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A micro differential pressure detection system, characterized in that: It includes an annular pressure taking device (2), The annular pressure taking device (2) is connected to a pressure taking port on the flue gas duct (1); a through hole is provided at a position where the annular pressure taking device (2) is connected to the pressure taking port, and a pipeline (3) is connected to each of the through holes; A back-blowing device (5) is provided at one end of the annular pressure take-off device (2).

2. A micro differential pressure detection system according to claim 1, characterized in that: The pipelines (3) are each provided with a ball valve (4).

3. A micro differential pressure detection system according to claim 1, characterized in that: The backflush device (5) comprises a nitrogen source, and a solenoid valve is provided between the nitrogen source and the annular pressure taker (2).

4. A micro differential pressure detection system according to claim 1, characterized in that: The annular pressure taking device (2) is also connected to a differential pressure transmitter (6).

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