Gas heater capable of preventing heating tube bundle from being blocked and corroded

Abstract

The utility model relates to the technical field of heaters, in particular to a coal gas heater capable of preventing a heating tube bundle from being blocked and corroded, which comprises a coal gas side header, a gas inlet and a gas outlet, a partition plate is arranged at the bottom of the coal gas side header, and a smoke side header is arranged below the partition plate. The two sides of the smoke side header and the two sides of the coal gas side header are respectively provided with a conical connecting pipe, and a first threaded clamping ring is arranged at the position, located at the right side end of the coal gas side header, of one side of the interior of the conical connecting pipe. Through the arrangement of first galvanized steel channels, second galvanized steel channels, a first threaded clamping ring, a second threaded clamping ring and a threaded clamping seat, the coal gas heater can conveniently enable coal gas to impact a row of first galvanized steel channels and a row of second galvanized steel channels when the coal gas passes through the coal gas heater, so that coal gas impurities are bonded on the galvanized steel channels firstly; and when passing through the heating tube bundle, impurities are greatly reduced, so that the service life of the heating tube bundle is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a gas heater with a heating tube bundle that is resistant to blockage and corrosion. Background Art

[0002] Due to the state's control over corporate energy consumption indicators and the continuous improvement of environmental protection requirements, various companies actively recycle waste heat for power generation and heating to improve economic benefits. Various flue heat exchangers have emerged, such as the MGGH process for de-whitening, which has obvious heat extraction and heat exchange effects;

[0003] In the existing heat pipe heat exchanger, flue gas and coal gas are subjected to countercurrent heat exchange. On the coal gas inlet side of the upper side of the gas heater, due to the high flow rate of coal gas impurities, the heat sink of the heat exchanger tube bundle is seriously blocked, thereby blocking the gas from passing through and affecting the thermal efficiency of the boiler. Secondly, the coal gas impurities contain a large number of chloride ions, which corrode the heat exchange medium tube bundle and fins, causing the heat exchange tube bundle to leak the heating medium and lose the effect of heating the coal gas. Therefore, in view of the above problems, a gas heater with a heating tube bundle that prevents blockage and corrosion is proposed. Utility Model Content

[0004] The utility model aims to provide a gas heater with a heating tube bundle that is resistant to clogging and corrosion, so as to solve the problem that the heat exchanger tube bundle fins are easily clogged and block the gas from passing through when the existing gas heater is proposed in the above background technology.

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

[0006] A gas heater with an anti-clogging and corrosion heating tube bundle comprises a gas side header, an air inlet and an air outlet, a partition is provided at the bottom of the gas side header, and a flue gas side header is provided below the partition, tapered connecting pipes are provided on both sides of the flue gas side header and the gas side header, a first threaded clamping ring is provided on one side of the interior of the tapered connecting pipe at the right end of the gas side header, a second threaded clamping ring is provided on the other side of the interior of the tapered connecting pipe at the right end of the gas side header, threaded clamping seats are provided on the outside of the second threaded clamping ring and the first threaded clamping ring, a first galvanized channel steel is horizontally arranged inside the first threaded clamping ring, a second galvanized channel steel is horizontally arranged inside the second threaded clamping ring, and side buckle plates are fixedly connected to both sides of the back of the second threaded clamping ring and the first threaded clamping ring.

[0007] Preferably, the gas side header and the flue gas side header are connected via a heating tube bundle body, and the heating tube bundle body and the partition are fixedly connected, the upper half of the heating tube bundle body is embedded in the gas side header, and the lower half of the heating tube bundle body is embedded in the flue gas side header.

[0008] Preferably, a first flange is fixedly connected to one side of the conical connecting pipe close to the gas side header, and a second flange is adjacently provided on one side of the first flange, the second flange is fixedly connected to the gas side header, and the second flange is fixedly connected to the first flange by bolts.

[0009] Preferably, the tapered pipe and the threaded holder are integrally formed, and an inner side of the threaded holder is provided with an internal thread line threadably connected to the first threaded retaining ring, and the cross-section of the threaded holder is an obtuse triangle structure.

[0010] Preferably, the second galvanized channel steel and the first galvanized channel steel are cross-arranged front to back, and a group of side clip plates are connected by a connecting rod, and the connecting rod is arranged at the rear of the first threaded clamping ring.

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

[0012] In the utility model, by arranging the first galvanized channel steel, the second galvanized channel steel, the first threaded clamp ring, the second threaded clamp ring and the threaded clamp seat, it is convenient for the gas heater to, when the gas passes through the gas heater, under the installation limitation of the first threaded clamp ring, the second threaded clamp ring and the threaded clamp seat, make the gas first impact on a row of first galvanized channel steels and a row of second galvanized channel steels, and then pass through the gaps beside them, thus avoiding the gas from directly impacting the heating tube bundle, causing impurities in the gas to adhere between the fins of the tube bundle, causing blockage and corrosion of the heat exchange tube bundle, and making the gas impurities adhere to the galvanized channel steel first, and then when passing through the heating tube bundle, the impurities will be reduced a lot, thereby extending the overall service life of the gas heater and laying a foundation for the stable operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cross-arrangement structure of the first threaded clamping ring and the second threaded clamping ring of the utility model;

[0015] Figure 3 It is a schematic diagram of the back structure of the second threaded clamping ring of the utility model.

[0016] In the figure: 1. gas side header; 2. partition; 3. flue gas side header; 4. tapered pipe; 5. first threaded clamp; 6. second threaded clamp; 7. threaded seat; 8. air inlet; 9. first flange; 10. second flange; 11. air outlet; 12. heating tube bundle body; 13. side buckle plate; 14. connecting rod; 15. first galvanized channel steel; 16. second galvanized channel steel. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 , the utility model provides a technical solution:

[0019] A gas heater with an anti-clogging and corrosion heating tube bundle comprises a gas side header 1, an air inlet 8 and an air outlet 11. A partition 2 is provided at the bottom of the gas side header 1, and a flue gas side header 3 is provided below the partition 2. Conical pipes 4 are provided on both sides of the flue gas side header 3 and the gas side header 1, respectively. A first threaded clamping ring 5 is provided on one side of the inside of the conical pipe 4 at the right end of the gas side header 1, and a second threaded clamping ring 6 is provided on the other side of the inside of the conical pipe 4 at the right end of the gas side header 1. Threaded clamping seats 7 are provided on the outside of the second threaded clamping ring 6 and the first threaded clamping ring 5, respectively. A first galvanized channel steel 15 is horizontally arranged inside the first threaded clamping ring 5, and a second galvanized channel steel 16 is horizontally arranged inside the second threaded clamping ring 6. Side buckle plates 13 are fixedly connected to both sides of the back of the second threaded clamping ring 6 and the first threaded clamping ring 5.

[0020] like Figure 1As shown, the gas side header 1 and the flue gas side header 3 are connected through the heating tube bundle body 12, and the heating tube bundle body 12 and the partition 2 are fixedly connected. The upper half of the heating tube bundle body 12 is embedded in the gas side header 1, and the lower half of the heating tube bundle body 12 is embedded in the flue gas side header 3. When the flue gas is transported from left to right, due to the special heating medium filled in the heating tube bundle body 12, under the setting of upper and lower connection, the flue gas passes through the heating tube bundle medium at the lower part and transfers heat to the heating tube bundle on the upper gas side, thereby increasing the gas temperature and saving boiler fuel; a first flange 9 is fixedly connected to a side position of the conical pipe 4 close to the gas side header 1, and a second flange 10 is adjacent to a side position of the first flange 9, and the second flange 10 and the gas side The side headers 1 are fixedly connected, and the second flange 10 and the first flange 9 are fixedly connected by bolts. When assembling the gas heater, after ensuring that the left and right groups are accurately docked, the first flange 9 and the second flange 10 can be connected together by multiple bolts to connect the gas side header 1 and the tapered pipe 4; the tapered pipe 4 and the threaded holder 7 are integrally formed, and an internal thread line threadedly connected to the first threaded retaining ring 5 is provided on one side of the inner side of the threaded holder 7. The cross-section of the threaded holder 7 is an obtuse triangle structure. When the first galvanized channel steel 15 and the second galvanized channel steel 16 are assembled, the threaded connection method adopted by the threaded holder 7 and the first threaded retaining ring 5 and the second threaded retaining ring 6 respectively can reduce the difficulty of installation, and is also convenient for convenient disassembly and cleaning operations at a later time.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, the second galvanized channel steel 16 and the first galvanized channel steel 15 are cross-arranged front to back, and a group of side clips 13 are connected by a connecting rod 14. The connecting rod 14 is arranged at the rear position of the first threaded clamping ring 5. The setting of the connecting rod 14 will play an auxiliary traction role when disassembling and assembling the second threaded clamping ring 6 and the first threaded clamping ring 5 respectively.

[0022] Working process: When using the gas heater, firstly, the device can be connected to the gas inlet and outlet pipelines and the smoke inlet and outlet pipelines through a group of air inlets 8 and a group of air outlets 11, respectively, and then Figure 1As shown, when the flue gas is transported from left to right through the inside of the flue gas side header 3, and the coal gas is transported from right to left through the inside of the gas side header 1, the gas heater will make the coal gas through the alternate arrangement of the first galvanized channel steel 15 and the second galvanized channel steel 16, so that when the coal gas passes through the tapered pipe 4, it can bind most of the dust and impurities in the coal gas, so that the coal gas enters the core component of the gas heater, the heating tube bundle body 12, through the gap between the channel steels. At this time, there are very few impurities in the coal gas and almost no substances that can be bonded, so that the heat exchange tube bundle fins will not be blocked, the coal gas can be heated more fully, and the heat exchange tube bundle will not be corroded, thereby improving the overall service life of the gas heater. At the same time, after the tapered pipe 4 is disassembled from the gas side header 1, the second threaded clamp 6 and the first threaded clamp 5 can be pulled and screwed in turn through the connecting rod 14, so that the two can be quickly disassembled from the tapered pipe 4, so as to clean the substances bonded to a row of first galvanized channel steels 15 and a row of second galvanized channel steels 16.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas heater with a heating tube bundle that is resistant to clogging and corrosion, comprising a gas side header (1), an air inlet (8) and an air outlet (11), characterized in that: A partition (2) is provided at the bottom of the gas side header (1), and a flue gas side header (3) is provided below the partition (2). Conical pipes (4) are provided at both sides of the flue gas side header (3) and the gas side header (1). A first threaded clamping ring (5) is provided at one side of the inside of the conical pipe (4) at the right end of the gas side header (1). A second threaded clamping ring (6) is provided at the other side of the inside of the conical pipe (4) at the right end of the gas side header (1). Threaded clamping seats (7) are provided at the outside of the second threaded clamping ring (6) and the first threaded clamping ring (5). A first galvanized channel steel (15) is horizontally arranged inside the first threaded clamping ring (5), and a second galvanized channel steel (16) is horizontally arranged inside the second threaded clamping ring (6). Side buckle plates (13) are fixedly connected at both sides of the back of the second threaded clamping ring (6) and the first threaded clamping ring (5).

2. The gas heater with anti-clogging and corrosion heating tube bundle according to claim 1, characterized in that: The gas side header (1) and the flue gas side header (3) are connected via a heating tube bundle body (12), and the heating tube bundle body (12) and the partition (2) are fixedly connected. The upper half of the heating tube bundle body (12) is embedded in the gas side header (1), and the lower half of the heating tube bundle body (12) is embedded in the flue gas side header (3).

3. The gas heater with anti-clogging and corrosion heating tube bundle according to claim 1, characterized in that: A first flange (9) is fixedly connected to a side of the conical pipe (4) close to the gas side header (1), and a second flange (10) is provided adjacent to a side of the first flange (9), the second flange (10) and the gas side header (1) are fixedly connected, and the second flange (10) and the first flange (9) are fixedly connected by bolts.

4. The gas heater with a clogging and corrosion-resistant heating tube bundle according to claim 1, characterized in that: The conical pipe (4) and the threaded holder (7) are integrally formed, and an internal thread line threadedly connected to the first threaded clamping ring (5) is provided on one side of the interior of the threaded holder (7), and the cross section of the threaded holder (7) is an obtuse triangle structure.

5. The gas heater with a clogging and corrosion-resistant heating tube bundle according to claim 1, characterized in that: The second galvanized channel steel (16) and the first galvanized channel steel (15) are arranged crosswise in front and back, and a group of side buckle plates (13) are connected by a connecting rod (14), and the connecting rod (14) is arranged at the rear position of the first threaded clamping ring (5).

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