Wireless anti-corrosion detector device for steel chimney

Abstract

The utility model provides a wireless anti-corrosion detector device for a steel chimney, which is applied to the technical field of steel chimneys, and adopts the technical scheme that the wireless anti-corrosion detector device comprises an outer cylinder and an inner cylinder fixed in the outer cylinder, and a smoke inlet and a smoke outlet which are communicated with the inner cylinder are formed in the outer cylinder; a wireless anti-corrosion detector is mounted on the outer wall of the inner cylinder; a signal transmission hole structure is arranged on the side wall of the outer cylinder on the opposite side of the wireless anti-corrosion detector; compared with the prior art, the wireless anti-corrosion detector has the technical effects that the wireless anti-corrosion detector not only can remotely monitor the corrosion state of the steel chimney and receive alarm information in time, but also can continuously track the whole corrosion process, quantify the metal corrosion rate and expect the service life of a pipeline, so that corresponding decisions can be made more quickly and intelligently, safe operation of equipment is guaranteed, non-planned shutdown is avoided, and the safety of the equipment is improved. The operation and maintenance time and cost are reduced; and in addition, scientific data can be provided for corresponding anti-corrosion design, the defects of anti-corrosion thickness design are overcome, and waste caused by too large anti-corrosion thickness is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of steel chimneys, in particular to a wireless anti-corrosion detector device for steel chimneys. Background Art

[0002] With the improvement of the national economic strength and comprehensive national strength, the gradual improvement of international environmental protection standards and the enhancement of the public's environmental protection awareness, the form of the chimney in thermal power plants has developed from a single-tube type to a multi-tube type. The suspended steel inner tube chimney, due to its economical steel consumption and the increasingly mature construction technology, is a chimney form that has been widely used in domestic and foreign projects in recent years, especially in the power system such as thermal power plants.

[0003] The Chinese utility model with the publication number CN206016408U discloses a corrosion-resistant and leakage-proof flue gas detection hole, including a corrosion-resistant seamless alloy tube extending into the chimney steel inner tube wall and welded and fixed to the chimney steel inner tube wall, and a lining anti-corrosion system provided on the chimney steel inner tube wall. A corrosion-resistant alloy flange is provided at the end of the corrosion-resistant seamless alloy tube exposed outside the chimney steel inner tube wall.

[0004] At present, most self-standing steel chimneys adopt anti-corrosion of the metal itself and fiberglass as the inner tube anti-corrosion; generally, a steel chimney is required to have a long service life and needs to operate continuously for a long time; during operation, the corrosion state and corrosion rate of the anti-corrosion metal or fiberglass cannot be predicted, so it is impossible to detect the equipment more accurately and perform planned operation and maintenance on the equipment. Content of the Utility Model

[0005] The purpose of the utility model is to provide a wireless anti-corrosion detector device for steel chimneys, and its advantage is to monitor the corrosion state of the inner tube in real time, ensure the safe operation of the equipment, and perform planned operation and maintenance.

[0006] To achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0007] A wireless anti-corrosion detector device for steel chimneys includes an outer cylinder and an inner cylinder fixed inside the outer cylinder. An inlet and an outlet for flue gas communicating with the inner cylinder are provided on the outer cylinder; a wireless anti-corrosion detector is installed on the outer wall of the inner cylinder; a signal transmission hole structure is provided on the side wall of the outer cylinder opposite to the wireless anti-corrosion detector.

[0008] Through the above technical solutions, the wireless anti-corrosion detector can perform typical health monitoring on the corrosion situation of the steel chimney; the detection signal is transmitted to the outside through the signal transmission hole structure, and the data is transmitted to the remote monitoring platform through the wireless sensor network, or can be checked through direct connection with the mobile phone Bluetooth; furthermore, the corrosion state of the inner cylinder can be monitored in real time, ensuring the safe operation of the equipment and performing planned operation and maintenance.

[0009] In an embodiment of the present utility model, a support frame is fixed on the outer wall of the inner cylinder, and the wireless anti-corrosion detector is fixed on the support frame; the detection end of the wireless anti-corrosion detector is adhered to the outer wall of the inner cylinder.

[0010] In an embodiment of the present utility model, the support frame includes a support plate horizontally fixed on the outer wall of the inner cylinder and a reinforcing plate fixed at the bottom of the support plate, and the reinforcing plate is fixed on the outer wall of the inner cylinder.

[0011] Through the above technical solution, the support frame is used to support the wireless anti-corrosion detector.

[0012] In an embodiment of the present utility model, the signal transmission hole structure includes an opening formed on the outer cylinder, a steel pipe fixed on the outer wall of the outer cylinder and communicated with the opening, a flange fixed on the steel pipe, and a blind flange fixed on the flange.

[0013] Through the above technical solution, the blind flange and the flange structure are convenient for installing and maintaining the wireless anti-corrosion detector; and the blind flange is made of a non-shielding material, so that it is convenient for the detection signal to be transmitted to the outside through the signal transmission hole structure and the data to be transmitted to the remote monitoring platform through the wireless sensor network, or to be queried through the direct connection of the mobile phone Bluetooth; furthermore, the corrosion state of the inner cylinder can be monitored in real time, ensuring the safe operation of the equipment and carrying out planned operation and maintenance.

[0014] In an embodiment of the present utility model, the outer wall of the inner cylinder is wrapped with heat-insulating cotton.

[0015] Through the above technical solution, the heat-insulating cotton plays a role in heat preservation and heat insulation.

[0016] In an embodiment of the present utility model, the wireless anti-corrosion detector is installed on the outer wall of the inner cylinder near the smoke inlet.

[0017] In an embodiment of the present utility model, the wireless anti-corrosion detector is installed on the outer wall of the inner cylinder near the smoke outlet.

[0018] Through the above technical solution, since the most serious corrosion of the chimney occurs at the inner cylinder at the smoke inlet and the smoke outlet, therefore, installing the wireless anti-corrosion detector on the outer wall of the inner cylinder at the smoke inlet and the smoke outlet to detect the corrosion of the inner cylinder is more representative.

[0019] As described above, a wireless anti-corrosion detector device for a steel chimney of the present utility model has the following beneficial effects:

[0020] 1. An experiment on numerically simulating the airflow movement inside a chimney based on CFD technology; it is found that at the smoke inlet, the concentration of corrosive flue gas accumulates to a relatively high level and is easily affected by the flue gas velocity, which can cause erosion to the chimney wall at the smoke inlet. Therefore, this is a region with relatively severe corrosion. Additionally, at the smoke outlet, as the height increases, the flue gas contacts the atmosphere at the top, the flue gas temperature decreases, forming a plume, resulting in a relatively high flue gas concentration at the outlet and being prone to dew point corrosion. Therefore, the smoke outlet is also a region with relatively severe corrosion. At the same time, tracking and detecting a large number of operating chimney devices also verifies that the corrosion at the smoke inlet and outlet is relatively severe. Therefore, by installing a wireless anti-corrosion detector at the smoke inlet and outlet where the chimney corrosion is relatively severe, typical health monitoring of the chimney corrosion situation can be carried out, and the corrosion state of the inner cylinder can be monitored in real time to ensure the safe operation of the equipment and carry out planned operation and maintenance.

[0021] 2. The wireless anti-corrosion detector can not only remotely monitor the corrosion state of the steel chimney, receive alarm information in a timely manner, but also continuously track the entire process of corrosion occurrence, quantify the metal corrosion rate and the expected pipeline life, so as to make corresponding decisions more quickly and intelligently, ensure the safe operation of the equipment, avoid unplanned shutdowns, and reduce the time and cost of operation and maintenance. Moreover, it can also provide scientific data for the corresponding anti-corrosion design, avoiding both the deficiency in the anti-corrosion thickness design and the waste caused by excessive anti-corrosion thickness. Brief Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the embodiment of the present utility model;

[0023] Figure 2 is Figure 1 the enlarged schematic diagram of part A in

[0024] Reference Numerals: 1, outer cylinder; 2, inner cylinder; 3, smoke inlet; 4, wireless anti-corrosion detector; 5, signal transmission hole structure; 6, support frame; 61, support plate; 62, reinforcement plate; 51, opening; 52, steel pipe; 53, flange; 54, blind flange; 13, thermal insulation cotton. Detailed Embodiment

[0025] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0026] Please refer to Figures 1 to 2It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of this utility model. Therefore, they do not have any technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the efficacy that this utility model can produce and the purpose that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope for the implementation of this utility model. The change or adjustment of their relative relationship, without substantial change of the technical content, should also be regarded as the scope that this utility model can implement.

[0027] Please refer to Figure 1 and Figure 2 , this utility model provides a wireless anti-corrosion detector device for a steel chimney, which includes an outer cylinder 1 and an inner cylinder 2 fixed inside the outer cylinder 1. An inlet 3 and an outlet for smoke are arranged on the outer cylinder 1 and are communicated with the inner cylinder 2. The inlet 3 is arranged at the bottom of the outer cylinder 1, and the outlet for smoke is arranged at the top of the outer cylinder 1.

[0028] An experiment on numerical simulation research of the airflow movement inside the chimney based on CFD technology; it is found that the concentration of corrosive flue gas is relatively high at the inlet 3 and is easily eroded by the flue gas velocity, which is likely to cause erosion to the cylinder wall at the inlet 3. Therefore, this area is a more severely corroded area; in addition, at the outlet for smoke, as the height increases, the flue gas contacts the atmosphere at the top, the temperature of the flue gas decreases, forming a plume, resulting in a relatively high concentration of flue gas at the outlet and being prone to dew point corrosion. Therefore, the outlet for smoke is also a more severely corroded area. At the same time, tracking and detecting a large number of already operating chimney devices also verifies that the corrosion at the inlet 3 and the outlet for smoke is relatively serious; therefore, a wireless anti-corrosion detector 4 is installed on the outer wall of the inner cylinder 2 at the inlet 3 or on the outer wall of the inner cylinder 2 at the outlet for smoke. The role of the wireless corrosion detector is to measure the thickness of the cylinder wall through ultrasonic reflection technology; thus, typical health monitoring of the corrosion situation of the steel chimney can be carried out. The wireless anti-corrosion detector 4 is more representative for detecting the more severely corrosive places.

[0029] In this embodiment, the wireless anti-corrosion detector 4 is installed on the outer wall of the inner cylinder 2 at the inlet 3; a support frame 6 is welded on the outer wall of the inner cylinder 2, the wireless anti-corrosion detector 4 is bolted to the support frame 6, and the detection end of the wireless anti-corrosion detector 4 is bonded to the outer wall of the inner cylinder 2; the support frame 6 includes a support plate 61 horizontally welded and fixed on the outer wall of the inner cylinder 2 and a reinforcing plate 62 welded and fixed at the bottom of the support plate 61, and the reinforcing plate 62 is fixed on the outer wall of the inner cylinder 2.

[0030] On the side wall of the outer cylinder 1 opposite to the wireless anti-corrosion detector 4, a signal transmission hole structure 5 is provided; the signal transmission hole structure 5 includes an opening 51 formed on the outer cylinder 1, a steel pipe 52 welded and fixed on the outer wall of the outer cylinder 1 and communicating with the opening 51, a flange 53 welded and fixed on the steel pipe 52, and a blind flange 54 bolted and fixed on the flange 53; among them, the blind flange 54 needs to be made of a non-shielding material, generally made of fiberglass or acrylic material with a thickness less than 10 mm; the structure of the flange 53 and the flange 53 facilitates the installation and maintenance of the wireless anti-corrosion detector 4; and the blind flange 54 is made of a non-shielding material, so that the detection signal can be transmitted to the outside through the signal transmission hole structure 5, and the data can be transmitted to the remote monitoring platform through the wireless sensor network, or viewed through the direct connection of the mobile phone Bluetooth; furthermore, the corrosion state of the inner cylinder 2 can be monitored in real time, ensuring the safe operation of the equipment and carrying out planned operation and maintenance;

[0031] The outer wall of the inner cylinder 2 is wrapped with heat-insulating cotton 13, and the heat-insulating cotton 13 plays a role in heat preservation and heat insulation.

[0032] Brief description of the use process: The wireless anti-corrosion detector 4 is adhered to the outer side wall of the inner cylinder 2. The support frame 6 is used to support the wireless anti-corrosion detector 4. The wireless anti-corrosion detector 4 measures the thickness of the cylinder wall through ultrasonic reflection technology, and the detection signal is transmitted to the outside through the signal transmission hole; and the data is transmitted to the remote monitoring platform through the wireless sensor network, or viewed through the direct connection of the mobile phone Bluetooth.

[0033] In summary, in the present utility model, the corrosion state of the equipment can be monitored in real time, and the whole process of corrosion occurrence can be continuously tracked, accurately judging the operation and maintenance of the equipment, and improving the safety and economy of the equipment operation. Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0034] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A wireless anti-corrosion detector device for a steel chimney, comprising an outer cylinder (1) and an inner cylinder (2) fixed inside the outer cylinder (1), wherein a smoke inlet (3) and a smoke outlet which are communicated with the inner cylinder (2) are arranged on the outer cylinder (1); characterized in that: A wireless anti-corrosion detector (4) is installed on the outer wall of the inner cylinder (2); a signal transmission hole structure (5) is provided on the side wall of the outer cylinder (1) opposite to the wireless anti-corrosion detector (4).

2. The wireless anti-corrosion detector device for a steel chimney according to claim 1, characterized in that: A support frame (6) is fixed on the outer wall of the inner cylinder (2), and the wireless anti-corrosion detector (4) is fixed on the support frame (6); the detection end of the wireless anti-corrosion detector (4) is bonded to the outer wall of the inner cylinder (2).

3. The wireless anti-corrosion detector device for a steel chimney according to claim 2, characterized in that: The support frame (6) includes a support plate (61) horizontally fixed on the outer wall of the inner cylinder (2) and a reinforcing plate (62) fixed to the bottom of the support plate (61), and the reinforcing plate (62) is fixed on the outer wall of the inner cylinder (2).

4. A wireless anti-corrosion detector device for a steel chimney according to claim 1, characterized in that: The signal transmission hole structure (5) includes an opening (51) formed in the outer cylinder (1), a steel pipe (52) fixed on the outer wall of the outer cylinder (1) and communicating with the opening (51), a flange (53) fixed on the steel pipe (52), and a blind flange (54) fixed on the flange (53).

5. The wireless anti-corrosion detector device for a steel chimney according to claim 1, characterized in that: The outer wall of the inner cylinder (2) is wrapped with heat-insulating cotton (13).

6. The wireless anti-corrosion detector device for steel chimneys according to claim 1, wherein: The wireless anti-corrosion detector (4) is installed on the outer wall of the inner cylinder (2) near the smoke inlet (3).

7. The wireless anti-corrosion detector device for steel chimneys according to claim 1, characterized in that: The wireless anti-corrosion detector (4) is installed on the outer wall of the inner cylinder (2) near the smoke outlet.

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