Bypass device for realizing non-stop of boiler during pipe explosion of economizer

Abstract

The utility model discloses a bypass device for realizing non-shutdown of a coal economizer during pipe explosion, which belongs to the technical field of coal economizers and comprises a bypass pipeline structure, the bypass pipeline structure consists of a flow guide pipeline, a second water inlet valve and a second water outlet valve, and the second water inlet valve and the second water outlet valve are respectively mounted at two ends of the flow guide pipeline. The first water inlet valve and the first water outlet valve are respectively provided with a bypass pipeline structure, the second water inlet valve and the second water outlet valve are respectively provided with a connecting pipeline, and the bypass device consisting of the bypass pipeline structure, the connecting pipelines, the first water inlet valve and the first water outlet valve is arranged; the economizer body can be closed through the first water inlet valve and the first water outlet valve, so that water flow flows through the bypass pipeline structure and then bypasses the economizer body, finally the water flow continues to enter a subsequent system of the boiler, normal operation of the boiler is kept, and economic losses and production interruption caused by boiler shutdown are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of economizers, in particular to a bypass device for realizing the non-stopping of the furnace in case of tube burst in an economizer. Background Art

[0002] Economizer is a device installed at the lower part of the flue at the tail of the boiler, mainly used to recover the waste heat of the exhaust gas. Its working principle is to set a series of metal tubes or sheets in the flue to make the flue gas contact with the pipe surface, so as to transfer the heat in the flue gas to the working medium (usually boiler feed water or circulating water) flowing through the pipe. In this process, the heat in the flue gas is absorbed, and the temperature of the working medium rises, thereby realizing the recovery and utilization of waste heat and improving the thermal efficiency of the boiler. During the use of the economizer, if the quality of the boiler feed water does not meet the standards and the oxygen content in the water is high, these oxygen may decompose and corrode the pipe wall when the temperature rises, which may easily lead to pipe bursting. In addition, if the feed water temperature is low and the exhaust gas temperature is lower than the dew point, the outer wall of the economizer tube may produce acid corrosion, which may also cause pipe bursting. The pipe bursting of the economizer may cause the operation of the boiler to be interrupted, which will cause economic losses and production interruption. Therefore, a bypass device that can achieve the non-stopping of the boiler in case of pipe bursting of the economizer is used to avoid the above problems. Utility Model Content

[0003] The main purpose of the utility model is to provide a bypass device that can achieve the purpose of not stopping the furnace when a tube bursts in an economizer, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A bypass device for preventing an economizer from shutting down in the event of a tube burst comprises a bypass pipe structure, wherein the bypass pipe structure consists of a diversion pipe, a second water inlet valve and a second water outlet valve, wherein the second water inlet valve and the second water outlet valve are respectively mounted at both ends of the diversion pipe, and a connecting pipe is respectively mounted on the second water inlet valve and the second water outlet valve, wherein the connecting pipe consists of a water main pipe and a water branch pipe, wherein the water main pipe and the water branch pipe are fixedly connected together, wherein a first water inlet valve is fixedly mounted on one of the connecting pipes, and a first water outlet valve is fixedly mounted on the other connecting pipe, and the first water inlet valve and the first water outlet valve are respectively mounted on the water inlet pipe and the water outlet pipe.

[0006] Preferably, the water inlet pipe and the water outlet pipe are fixedly installed on the economizer body.

[0007] Preferably, the water inlet pipe is fixedly connected to the first water inlet valve, and the water outlet pipe is fixedly connected to the first water outlet valve.

[0008] Preferably, the diversion pipe on the bypass pipe structure is an L-shaped structure, and the diversion pipe is fixedly connected to the second water inlet valve and the second water outlet valve.

[0009] Preferably, the two water flow branches on the two connecting pipes are fixedly connected to the second water inlet valve and the second water outlet valve respectively.

[0010] Preferably, the first water inlet valve and the first water outlet valve are respectively fixedly mounted on two water main pipes on two connecting pipes.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By setting up a bypass device consisting of a bypass pipe structure, a connecting pipe, a first water inlet valve and a first water outlet valve, when a pipe burst occurs in the economizer body, the economizer body can be closed by the first water inlet valve and the first water outlet valve, so that water can flow through the bypass pipe structure and bypass the economizer body, and finally the water can continue to flow into the subsequent system of the boiler, thereby maintaining the normal operation of the boiler and avoiding economic losses and production interruptions caused by shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a schematic diagram of the structure of the bypass pipeline structure, the connecting pipeline, the first water inlet valve and the first water outlet valve of the utility model;

[0015] Figure 3 This is a disassembled diagram of the bypass pipeline structure of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the connecting pipeline of the utility model.

[0017] In the figure: 1. Bypass pipe structure; 2. Connecting pipe; 3. First water inlet valve; 4. First water outlet valve; 5. Economizer body; 6. Water inlet pipe; 7. Water outlet pipe; 8. Water main pipe; 9. Water flow branch; 10. Diversion pipe; 11. Second water inlet valve; 12. Second water outlet valve. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a bypass device for realizing a pipe burst in an economizer without stopping the furnace comprises a bypass pipe structure 1, the bypass pipe structure 1 is composed of a guide pipe 10, a second water inlet valve 11 and a second water outlet valve 12, the second water inlet valve 11 and the second water outlet valve 12 are respectively installed at both ends of the guide pipe 10, the guide pipe 10 on the bypass pipe structure 1 is an L-shaped structure, and the guide pipe 10 and the second water inlet valve 11 and the second water outlet valve 12 are all fixedly connected, a connecting pipe 2 is respectively installed on the second water inlet valve 11 and the second water outlet valve 12, the connecting pipe 2 is composed of a water main pipe 8 and a water branch 9, the water main pipe 8 and the water branch 9 are fixedly connected together, the two water branch 9 on the two connecting pipes 2 are respectively fixedly connected to the second water inlet valve 11 and the second water outlet valve 12, and one of the connecting pipes 2 A first water inlet valve 3 is fixedly installed on the top, and a first water outlet valve 4 is fixedly installed on the other connecting pipe 2, and the first water inlet valve 3 and the first water outlet valve 4 are respectively installed on the water inlet pipe 6 and the water outlet pipe 7, and the first water inlet valve 3 and the first water outlet valve 4 are respectively fixedly installed on the two water main pipes 8 on the two connecting pipes 2. By setting a bypass device composed of a bypass pipe structure 1, a connecting pipe 2, a first water inlet valve 3 and a first water outlet valve 4, when a pipe burst occurs in the economizer body 5, the economizer body 5 can be closed by the first water inlet valve 3 and the first water outlet valve 4, so that water flows through the bypass pipe structure 1, and then bypasses the economizer body 5, and finally allows the water to continue to flow into the subsequent system of the boiler, maintaining the normal operation of the boiler, thereby avoiding economic losses and production interruptions caused by shutdown.

[0020] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the water inlet pipe 6 and the water outlet pipe 7 are fixedly installed on the economizer body 5, the water inlet pipe 6 is fixedly connected to the first water inlet valve 3, and the water outlet pipe 7 is fixedly connected to the first water outlet valve 4.

[0021] It should be noted that the utility model is a bypass device that can achieve the purpose of not stopping the economizer when a tube bursts. During use, water will flow into the water inlet pipe 6 through the water main pipe 8 and the first water inlet valve 3 of the connecting pipe 2, and then flow into the economizer body 5, and then the water will flow out through the water outlet pipe 7 and the first water outlet valve 4; when a tube bursts in the economizer body 5, in order to enable the boiler to continue to operate normally, water can be allowed to flow through the bypass pipe structure 1 into the subsequent system of the boiler, and the method is to first open the second water inlet valve 11 and the second water outlet valve 12 on the bypass pipe structure 1 in sequence, and then the first water inlet valve 3 and the first water outlet valve 4 can be closed in sequence, so as to prevent water from continuing to enter the economizer body 5. At this time, the water will enter the bypass pipe structure 1 through the water main pipe 8 and the water branch 9 on the connecting pipe 2, and finally the water will enter the subsequent system of the boiler through the bypass pipe structure 1.

[0022] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A bypass device to achieve a non-stop operation in case of tube burst in an economizer, characterized in that: The bypass pipe structure (1) comprises a diversion pipe (10), a second water inlet valve (11) and a second water outlet valve (12), wherein the second water inlet valve (11) and the second water outlet valve (12) are respectively mounted at two ends of the diversion pipe (10), and a connecting pipe (2) is respectively mounted on the second water inlet valve (11) and the second water outlet valve (12), wherein the connecting pipe (2) comprises a water main pipe (8) and a water branch pipe (9), wherein the water main pipe (8) and the water branch pipe (9) are fixedly connected together, wherein a first water inlet valve (3) is fixedly mounted on one of the connecting pipes (2), and a first water outlet valve (4) is fixedly mounted on the other of the connecting pipes (2), and the first water inlet valve (3) and the first water outlet valve (4) are respectively mounted on the water inlet pipe (6) and the water outlet pipe (7).

2. A bypass device for realizing a non-stop operation in case of tube burst in an economizer according to claim 1, characterized in that: The water inlet pipe (6) and the water outlet pipe (7) are fixedly installed on the economizer body (5).

3. The bypass device for realizing the economizer tube burst without stopping the furnace according to claim 2, characterized in that: The water inlet pipe (6) is fixedly connected to the first water inlet valve (3), and the water outlet pipe (7) is fixedly connected to the first water outlet valve (4).

4. A bypass device for realizing a non-stop operation in case of tube burst in an economizer according to claim 3, characterized in that: The diversion pipe (10) on the bypass pipe structure (1) is an L-shaped structure, and the diversion pipe (10) is fixedly connected to the second water inlet valve (11) and the second water outlet valve (12).

5. A bypass device for realizing the economizer tube burst without stopping the furnace according to claim 4, characterized in that: The two water flow branches (9) on the two connecting pipes (2) are fixedly connected to the second water inlet valve (11) and the second water outlet valve (12) respectively.

6. A bypass device for realizing a non-stop operation in case of tube burst in an economizer according to claim 5, characterized in that: The first water inlet valve (3) and the first water outlet valve (4) are respectively fixedly mounted on two water flow mains (8) on the two connecting pipes (2).

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