Heat exchanger maintenance structure

Abstract

The utility model relates to the field of heat exchangers, in particular to a heat exchanger maintenance structure which comprises a plurality of groups of heat exchange pipes arranged in parallel, each heat exchange pipe is provided with a condensate water inlet and a steam outlet, the condensate water inlet is communicated with a condensate water collecting pipe, and the steam outlet is communicated with a steam collecting pipe. Each heat exchange pipe is detachably and fixedly connected with the steam collecting pipe through a first flange, and each heat exchange pipe is detachably and fixedly connected with the condensate water collecting pipe through a second flange. Through the arrangement of the first flange and the second flange, each heat exchange pipe can be independently detached from the steam collecting pipe and the condensate water collecting pipe, the overhaul operation of the heat exchanger is simplified, the overhaul range of the heat exchange pipes can be effectively narrowed, the judgment of the leakage positions of the heat exchange pipes is more accurate, and the overhaul efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger equipment technical field, especially a kind of heat exchanger overhauling structure. BACKGROUND

[0002] In current phase-change heat exchanger, leakage often occurs in pipe weld position, checking leakage position and replacing heat exchange tube become indispensable step in the use of phase-change heat exchanger.

[0003] The existing technology usually adopts water pressure test method to overhaul phase-change heat exchanger, that is, by injecting water into heat exchanger pipe and pressurizing, whether pipe has leakage sign is observed, this method needs to drain, pressurize and other steps, there is the problem of complex operation, long time consumption, and large-scale shutdown and a large number of manpower support are needed.

[0004] In the prior art, some adopt gas pressure test method to overhaul heat exchanger, use pressurized gas to detect leakage, whether leakage is judged by pressure change, but gas pressure test is not sensitive enough to slight leakage, especially when the number of pipes is large and the internal structure is complex, full shutdown is needed after leakage is found to overhaul, leading to long shutdown time, time-consuming and labor-consuming, resulting in low overhaul efficiency. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of heat exchanger overhauling structure, so that the overhaul operation of heat exchanger is convenient and fast, and the judgment of heat exchange tube leakage position is more accurate, and the overhaul efficiency is improved.

[0006] To solve the above technical problems, the embodiment of the utility model provides a technical scheme as follows:

[0007] A kind of heat exchanger overhauling structure, including multiple groups of parallelly connected heat exchange tubes, each heat exchange tube is equipped with condensate water inlet and steam outlet, the condensate water inlet is communicated and is equipped with condensate water header, the steam outlet is communicated and is equipped with steam header, each heat exchange tube and steam header are formed by first flange and are detachably connected, each heat exchange tube and condensate water header are formed by second flange and are detachably connected. By the setting of first flange and second flange, each heat exchange tube and steam header and condensate water header can be individually detached, the overhaul operation of heat exchanger is simplified, and the overhaul range of heat exchange tube can be effectively reduced, and the judgment of heat exchange tube leakage position is more accurate.

[0008] Further, including first support pipe, one end of the first support pipe is communicated with steam header, the other end is communicated with steam outlet, the first flange is arranged on the first support pipe.

[0009] Further, the first support pipe is provided with a first maintenance valve corresponding to the first flange, and the first maintenance valve can open or close the connecting channel between the heat exchange pipe and the steam header.

[0010] Further, a second support pipe is provided, one end of the second support pipe is communicated with the condensate pipe, and the other end is communicated with the condensate inlet, and the second flange is arranged on the second support pipe.

[0011] Further, the second support pipe is provided with a second maintenance valve corresponding to the second flange, and the second maintenance valve can open or close the connecting channel between the heat exchange pipe and the condensate header.

[0012] Further, the heat exchange pipe is further provided with a pressure sensor.

[0013] The heat exchanger maintenance structure provided by the utility model, relative to prior art, through the setting of the first flange between the heat exchange pipe and the steam header and the second flange between the heat exchange pipe and the condensate header, each heat exchange pipe can be individually disassembled between the steam header and the condensate header, the maintenance operation of the heat exchanger is simplified, the maintenance range of the heat exchange pipe is effectively reduced, the judgment of the leakage position of the heat exchange pipe is more accurate, and the maintenance efficiency is improved, through the setting of the first maintenance valve and the second maintenance valve, the on-off of each heat exchange pipe can be controlled, the heat exchange pipe can realize independent isolation and partition detection, the vacuum gun can be used to vacuumize the heat exchange pipe more conveniently, the precision and sensitivity of heat exchange pipe leakage positioning are greatly improved, through rapid positioning and local maintenance, downtime and manpower demand are significantly reduced, and the maintenance efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] One or more embodiments are illustrated by way of example in the drawings that are for illustrative purposes only, and thus are not to be construed as limiting the embodiments, and elements of the drawings with the same reference numerals represent similar elements, unless otherwise specified, and the drawings do not constitute a proportional limit.

[0015] Figure 1 is a front view of a heat exchanger maintenance structure in the utility model embodiment,

[0016] Figure 2 is a top view of a heat exchanger maintenance structure in the utility model embodiment,

[0017] Figure 3 is Figure 2 the local A enlarged view in,

[0018] Explanation of reference numerals in the attached drawings: 1. First support pipe; 11. First maintenance valve; 2. Second support pipe; 21. Second maintenance valve; 3. First flange; 4. Second flange; 5. Heat exchanger pipe; 51. Steam outlet; 52. Condensate inlet; 6. Steam manifold; 7. Condensate manifold; 8. Pressure sensor. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0020] like Figures 1-3 As shown, one embodiment of this utility model relates to a heat exchanger maintenance structure, including multiple sets of heat exchange tubes 5 arranged in parallel. Each heat exchange tube 5 is provided with a condensate inlet 52 and a steam outlet 51. The condensate inlet 52 is connected to a condensate manifold 7, and the steam outlet 51 is connected to a steam manifold 6. Each heat exchange tube 5 and the steam manifold 6 are detachably fixedly connected by a first flange 3, and each heat exchange tube 5 and the condensate manifold 7 are detachably fixedly connected by a second flange 4. The arrangement of the first flange 3 and the second flange 4 allows each heat exchange tube 5 to be individually disassembled from both the steam manifold 6 and the condensate manifold 7, effectively reducing the maintenance scope of the heat exchange tubes 5 and simplifying the maintenance operation of the heat exchanger.

[0021] In one embodiment, a heat exchanger maintenance structure is disclosed, which comprises a first support pipe 1, one end of the first support pipe 1 being in communication with a steam header 6, the other end being in communication with a steam outlet 51, a first flange 3 being arranged on the first support pipe 1; and a second support pipe 2, one end of the second support pipe 2 being in communication with a condensate pipe, the other end being in communication with a condensate inlet 52, a second flange 4 being arranged on the second support pipe 2, the connection of the flanges facilitating the maintenance and replacement of the heat exchange pipe 5, and the arrangement of the first support pipe 1 and the second support pipe 2 providing stable support for the flange arrangement, ensuring the sealing of the interface and the long-term use of the heat exchange pipe 5. In one exemplary example, the first support pipe 1 is provided with a first maintenance valve 11 corresponding to the first flange 3, the first maintenance valve 11 being capable of opening or closing the connection channel between the heat exchange pipe 5 and the steam header 6; further, the second support pipe 2 is provided with a second maintenance valve 21 corresponding to the second flange 4, the second maintenance valve 21 being capable of opening or closing the connection channel between the heat exchange pipe 5 and the condensate header 7. Through the arrangement of the first maintenance valve 11 and the second maintenance valve 21, the on-off of each heat exchange pipe 5 can be controlled, so that the heat exchange pipe 5 can be independently isolated and partitioned for detection, and the use of a vacuum gun for vacuumizing the heat exchange pipe 5 can be facilitated, greatly improving the accuracy and sensitivity of heat exchange pipe 5 leakage positioning.

[0022] In one embodiment, a heat exchanger maintenance structure is disclosed, which comprises a first support pipe 1, one end of the first support pipe 1 being in communication with a steam header 6, the other end being in communication with a steam outlet 51, a first flange 3 being arranged on the first support pipe 1; and a second support pipe 2, one end of the second support pipe 2 being in communication with a condensate pipe, the other end being in communication with a condensate inlet 52, a second flange 4 being arranged on the second support pipe 2, the connection of the flanges facilitating the maintenance and replacement of the heat exchange pipe 5, and the arrangement of the first support pipe 1 and the second support pipe 2 providing stable support for the flange arrangement, ensuring the sealing of the interface and the long-term use of the heat exchange pipe 5. In one exemplary example, the first support pipe 1 is provided with a first maintenance valve 11 corresponding to the first flange 3, the first maintenance valve 11 being capable of opening or closing the connection channel between the heat exchange pipe 5 and the steam header 6; further, the second support pipe 2 is provided with a second maintenance valve 21 corresponding to the second flange 4, the second maintenance valve 21 being capable of opening or closing the connection channel between the heat exchange pipe 5 and the condensate header 7. Through the arrangement of the first maintenance valve 11 and the second maintenance valve 21, the on-off of each heat exchange pipe 5 can be controlled, so that the heat exchange pipe 5 can be independently isolated and partitioned for detection, and the use of a vacuum gun for vacuumizing the heat exchange pipe 5 can be facilitated, greatly improving the accuracy and sensitivity of heat exchange pipe 5 leakage positioning.

[0023] In use, when abnormal leakage of the heat exchanger is found, the pipelines of each heat exchange pipe 5 can be first closed through the first maintenance valve 11 and the second maintenance valve 21, the detection range is gradually narrowed, the suspicious area is locked, and the detection efficiency of the heat exchanger is improved through the narrowing of the detection range; then, the heat exchange pipe 5 in the suspicious area is detected one by one using a vacuum gun, and whether the vacuum degree falls back is detected, so as to quickly judge the leakage position, the vacuumizing technology uses the rapid falling back of the vacuum degree to judge the leakage point, and is particularly suitable for the rapid detection of slight leakage, further improving the detection efficiency of the heat exchanger.

[0024] The utility model provides a kind of heat exchanger overhaul structure, by the setting of first flange and second flange, so that each heat exchange tube and steam header and condensate header can be individually detached, simplify the overhaul operation of heat exchanger, can effectively reduce the overhaul range of heat exchange tube, the judgment of heat exchange tube leakage position is more accurate, improve overhaul efficiency;Through the setting of first overhaul valve and second overhaul valve, the on-off of each heat exchange tube can be controlled, so that heat exchange tube can realize independent isolation and partition detection, can be more convenient to use vacuum gun to heat exchange tube is pumped, greatly improve the precision and sensitivity of heat exchange tube leakage positioning, by quick positioning and local overhaul, significantly reduce downtime and manpower demand, improve overhaul efficiency.

[0025] Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for implementing the utility model, and in actual application, various changes can be made to them in form and details without departing from the spirit and scope of the utility model.

Claims

1. A heat exchanger maintenance structure, characterized by, The heat exchange tube (5) is provided with a condensate water inlet (52) and a steam outlet (51), the condensate water inlet (52) is communicated with a condensate water header (7), the steam outlet (51) is communicated with a steam header (6), the heat exchange tube (5) and the steam header (6) are detachably connected through a first flange (3), and the heat exchange tube (5) and the condensate water header (7) are detachably connected through a second flange (4).

2. The heat exchanger repair structure of claim 1, wherein The first support pipe (1) is communicated with the steam header (6) at one end and communicated with the steam outlet (51) at the other end, and the first flange (3) is arranged on the first support pipe (1).

3. The heat exchanger repair structure of claim 2, wherein The first support pipe (1) is provided with a first maintenance valve (11) corresponding to the first flange (3), and the first maintenance valve (11) can open or close the connecting channel between the heat exchange tube (5) and the steam header (6).

4. The heat exchanger repair structure of claim 1, wherein The second support pipe (2) is communicated with the condensate water inlet (52) at one end and communicated with the condensate water outlet at the other end, and the second flange (4) is arranged on the second support pipe (2).

5. The heat exchanger repair structure of claim 4, wherein The second support pipe (2) is provided with a second maintenance valve (21) corresponding to the second flange (4), and the second maintenance valve (21) can open or close the connecting channel between the heat exchange tube (5) and the condensate water header (7).

6. The heat exchanger repair structure according to any one of claims 1 to 5, characterized in that The heat exchange tube (5) is further provided with a pressure sensor (8).

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