Heat exchanger pipeline drying tool and heat exchanger

Abstract

The utility model relates to a heat exchanger pipeline drying tool and a heat exchanger. The heat exchanger pipeline drying tool comprises a first flange, a shell, a partition plate and a drying pipeline. The first flange is arranged at the end part of the heat exchanger shell; a shell is arranged on the side, away from the heat exchanger, of the first flange. An air inlet and an air outlet are respectively formed in the upper and lower ends of the shell; a drying pipeline is arranged at the air inlet of the shell; a hot air passing cavity is formed between the first flange and the shell; a partition plate is transversely arranged in the hot air passing cavity; one end of the partition is connected with the inner wall of the shell; and the other end of the partition plate is arranged on the first cross beam. The device is simple, reasonable and compact in structure, and effectively removes water vapor in the heat exchanger pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of power-saving, disassembly-free, fast-drying heat exchangers, in particular to a heat exchanger pipeline drying tool and a heat exchanger. Background Art

[0002] The heat exchanger plays a cooling and heat dissipation role in the shielded pump. Due to the particularity of the shielded pump, the cooling and heat dissipation medium is the liquid material transported in the shielded pump. Some of the liquid materials transported will become strong acids when they come into contact with water. The strong acid corrodes the metal pipes of the heat exchanger and causes material leakage. The leakage of materials will cause damage to the environment and related personnel.

[0003] There are two reasons why liquid water is generated in the heat exchanger: 1. The product needs to undergo a water pressure test during the production of parts. 2. The shielded pump needs to undergo a pump performance test after the first full assembly. The performance test medium is liquid water, and the heat exchanger also participates in the entire performance test.

[0004] In summary, it is imperative to remove water from the heat exchanger pipes. After the test, the existing heat exchangers will use compressed air to blow out the liquid water in the heat exchanger during the secondary assembly process, but the liquid water cannot be completely blown out during this process, and the pipes are still very wet and contain water vapor. Disassembling the heat exchanger and sending it to the drying furnace for drying delays the construction period and causes a waste of manpower and electricity resources. Utility Model Content

[0005] The utility model mainly solves the technical problems of the prior art that the drying of heat exchanger pipelines wastes manpower and causes waste of resources, and proposes a heat exchanger pipeline drying tool and a heat exchanger, which saves manpower and power resources and ensures that the entire heat exchanger pipeline is dry and liquid-free.

[0006] The utility model provides a heat exchanger pipeline drying tool, comprising: a first flange, a shell, a partition and a drying pipeline;

[0007] The first flange is arranged at the end of the heat exchanger shell or the first flange is arranged at the end of the heat exchanger shell through the second flange; a shell is arranged on the side of the first flange away from the heat exchanger; an air inlet and an air outlet are arranged at the upper and lower ends of the shell respectively; a drying pipeline is arranged at the air inlet of the shell;

[0008] A hot air passage cavity is formed between the first flange and the shell; a partition is transversely arranged in the hot air passage cavity; one end of the partition is connected to the inner wall of the shell; and the other end of the partition is arranged on a first beam that passes through the middle of the first flange.

[0009] Furthermore, when the first flange is arranged at the end of the heat exchanger shell, a protrusion is arranged in the middle of the first flange; and the protrusion is embedded in the heat exchanger end plate at the end of the heat exchanger shell.

[0010] Furthermore, the outer diameter of the first flange protrusion is adapted to the inner diameter of the heat exchanger end plate.

[0011] Furthermore, the length of the first flange protrusion is adapted to the depth of the heat exchanger end plate.

[0012] Further, when the first flange is arranged at the end of the heat exchanger shell through the second flange, the second flange is fixedly matched with the end plate of the heat exchanger.

[0013] Furthermore, a metal sealing strip is arranged inside the second flange.

[0014] Furthermore, a heat exchanger comprises: a heat exchanger shell, a heat exchanger pipeline and the heat exchanger pipeline drying tool as described in any one of the above items;

[0015] Heat exchanger pipelines are laid in the heat exchanger shell; a heat exchanger end plate is arranged at the open end of the heat exchanger shell; and a heat exchanger pipeline drying tool is arranged on the side of the heat exchanger end plate away from the heat exchanger.

[0016] Compared with the prior art, the non-disassembly and quick drying tooling for heat exchanger pipes of multiple specifications provided by the utility model has the following advantages:

[0017] 1. The heat exchanger drying tool of the utility model is arranged on the heat exchanger through the first flange, and at the same time, a partition is added to the heat exchanger drying tool, and the humid hot air exhaust port is changed to a large aperture vertically downward, so that the heat exchanger drying tool is divided into two chambers, namely the dry hot air chamber and the humid hot air chamber, so that the humid hot air cannot be mixed with the dry hot air and enter the pipeline again. The enlarged aperture also facilitates the humid hot air to be discharged as soon as possible, thereby eliminating the reverse cycle, and the heat exchanger does not need to be disassembled and sent to the drying furnace for drying, saving manpower.

[0018] 2. The utility model heat exchanger pipeline drying tooling has a simple, reasonable and compact structure. Compared with the existing technology, it can effectively discharge water vapor in the pipeline, reduce labor intensity and save electricity resources, and eliminate the risk of product operation under certain working conditions without increasing labor intensity and quality risks, and solve the risk of pipeline corrosion under certain working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the tooling structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the utility model tooling with a second flange and a sealing strip structure;

[0021] Figure 3 It is a side view of the tooling structure of the utility model;

[0022] Figure 4This is a schematic diagram of the sealing strip structure of the utility model Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the sealing strip structure of the utility model Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the second flange structure of the utility model Figure 1 ;

[0025] Figure 7 This is a schematic diagram of the second flange structure of the utility model Figure 2 ;

[0026] Figure 8 This is the use status diagram of the utility model tooling

[0027] Figure numerals: 1. first flange; 2. outer shell; 3. partition; 4. drying pipeline; 5. second flange; 6. metal sealing strip; 7. heat exchanger end plate; 8. heat exchanger pipeline; 9. heat exchanger outer shell; 10. shielded pump; 11. first crossbeam. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of the contents.

[0029] Example 1

[0030] like Figure 1-7 As shown, a heat exchanger pipeline drying tool provided by an embodiment of the utility model comprises: a first flange 1, a shell 2, a partition 3 and a drying pipeline 4;

[0031] The first flange 1 is arranged at the end of the heat exchanger housing 9; a housing 2 is arranged on the side of the first flange 1 away from the heat exchanger; the housing 2 is welded to the first flange 1; an end cover is arranged on the top of the housing 2

[0032] ; A hot air passage cavity is formed between the first flange 1 and the shell 2; a partition 3 is horizontally arranged in the hot air passage cavity; one end of the partition 3 is connected to the inner wall of the shell 2; the other end of the partition 3 is arranged on the first crossbeam that passes through the middle of the first flange; the partition 3 separates the hot air drying cavity from the humid cavity to prevent humid hot air from entering the drying cavity.

[0033] The upper and lower ends of the shell 2 are respectively provided with an air inlet and an air outlet; a drying pipeline 4 is provided at the air inlet of the shell 2, and the drying pipeline 4 is used to fix the hot air blower pipeline; the shell 2 is mainly formed by welding pipe materials and round plate materials.

[0034] The first flange 1 is a circular ring, and a protrusion is arranged in the middle of the first flange 1; the protrusion is embedded in the end plate 7 of the heat exchanger.

[0035] The outer diameter of the protrusion of the first flange 1 is adapted to the inner diameter of the heat exchanger end plate 7. The length of the protrusion of the first flange 1 is adapted to the depth of the heat exchanger end plate 7, which has a sealing effect and seals the dry hot air and moist hot air cavities without leakage.

[0036] The first flange 1 is fixed to the second flange 5 by bolts. After the first flange 1 is fixed by bolts, the second flange 5 is fixed to the heat exchanger end plate 7 by bolts so as to be applicable to heat exchangers of different specifications.

[0037] A metal sealing strip 6 is arranged in the second flange 5; the metal sealing strip 6 is fastened to a second cross beam penetrating the middle of the second flange 5 by bolts. The metal sealing strip is rectangular and is used to isolate the air inlet and the air outlet of the heat exchanger.

[0038] During the design process of this embodiment, we must first observe how to fix this tooling to the heat exchanger, then consider how to blow the hot air into each heat exchanger pipe, and then consider how to separate the incoming and outgoing hot air to prevent the humid hot air from entering the heat exchanger pipe again. Finally, we need to consider the entry method of the hot air and whether the dry hot air can enter the closed environment to prevent leakage.

[0039] After the theoretical design was completed, in order to better cover all types of heat exchangers in the product, the versatility of the tooling was included at the beginning of the design, and the design of the second flange of the heat exchanger pipe drying tooling and the design of the extended metal sealing strip of the heat exchanger pipe drying tooling were completed.

[0040] The design process of the heat exchanger pipeline drying tooling described in this embodiment is as follows:

[0041] 1. Design the first flange of the heat exchanger pipeline drying tooling according to the relevant dimensions of the heat exchanger. The positioning stop and stop depth of this tooling are designed according to the dimensions of the heat exchanger end plate. This design can not only seal but also fasten the tooling to the heat exchanger.

[0042] 2. Design the heat exchanger pipeline drying tool pipeline 4 according to the size of the hot air pipeline. The entry mode of the dry hot air is selected from the top-down entry mode. This mode allows each heat exchanger pipeline 8 in the heat exchanger to enter the dry hot air.

[0043] 3. In order to prevent the humid hot air from entering the heat exchanger pipeline again, a heat exchanger pipeline drying tooling partition 3 is set in the tooling. This partition 3 is welded to the cavity formed by the heat exchanger pipeline drying tooling flange and the heat exchanger pipeline drying tooling shell, dividing the cavity into two parts to separate the humid and dry hot air.

[0044] 4. In order to enable this tooling to cover more heat exchanger models, a second flange 5 and an extended metal sealing strip 6 are designed to fully cover all types of heat exchangers.

[0045] The production process of the heat exchanger pipeline drying tooling described in this embodiment is as follows:

[0046] 1. Turn the first flange 1 of the heat exchanger pipeline drying tooling according to the drawing.

[0047] 2. Mill and drill the first flange of the heat exchanger pipeline drying tooling according to the drawing in the machining center.

[0048] 3. Weld the heat exchanger pipe drying fixture partition to the first flange of the heat exchanger pipe drying fixture according to the drawing requirements.

[0049] 4. Weld the pipe material part of the heat exchanger pipeline drying tool shell 2 according to the requirements of the drawing.

[0050] 5. Weld the end cover of the heat exchanger pipe drying tool shell 2 according to the drawing requirements. The heat exchanger pipe drying tool shell 2 consists of two parts: the pipe material and the end cover; the end cover is set on the top of the pipe material.

[0051] 6. Weld the heat exchanger pipe drying tooling partition and the heat exchanger pipe drying tooling shell-end cover part together according to the requirements of the drawing.

[0052] 7. Drill hot air inlet and outlet on the outer shell of the heat exchanger pipeline drying tooling according to the requirements of the drawing.

[0053] 8. Weld the heat exchanger pipeline drying tooling pipeline to the air inlet according to the requirements of the drawing.

[0054] 9. After welding is completed, heat treatment is performed to eliminate welding stress.

[0055] In order to increase the welding position of the tooling partition in the above production process, a first crossbeam is added to the first flange of the heat exchanger pipeline drying tooling; the first crossbeam runs through the middle of the first flange and belongs to the middle part of the first flange. The design increase makes the original machine tool equipment unable to complete the processing. Finally, the vertical machining center is added, and the equipment is used after turning to finally meet the design drawing requirements. Finally, after the entire welding process is completed, a welding stress elimination heat treatment process is added. The importance of this process is discovered after the welding process and during the use of the tooling, because the welding position of this tooling part is a right-angle butt welding of the sheet metal. After welding, the release of the internal profit of the welding will always inadvertently cause the weld cracking, resulting in the inability to orderly discharge the humid air of the heat exchanger and the hot air discharged from the cracks cannot enter the heat exchanger for dehumidification. The post-welding internal stress elimination heat treatment process selects overall high-temperature tempering. The specific operation is as follows: put the weldment as a whole into a heating furnace, heat it to 600--650℃ (carbon steel), keep it warm for 1 hour, and then slowly cool it in the air. 80--90% of the welding stress can be eliminated.

[0056] After the standard heat exchanger is processed, in order to adapt to heat exchangers of different specifications, the second flange of the heat exchanger pipeline drying tooling is processed according to the relevant dimensions of the completed tooling. The processing route of the second flange is: turning - wire cutting - machining center milling and drilling - turning. The processing route of the heat exchanger pipeline drying tooling extended metal sealing strip is: wire cutting - marking - drilling.

[0057] Example 2

[0058] like Figure 8 As shown, a heat exchanger comprises: a heat exchanger shell 9, a heat exchanger pipeline 8 and a heat exchanger pipeline drying tool as described in any one of the above items;

[0059] The heat exchanger pipe 8 is laid in the heat exchanger shell 9; the heat exchanger end plate 7 is arranged at the open end of the heat exchanger shell 9; and the heat exchanger pipe drying tooling is arranged on the side of the heat exchanger end plate 7 away from the heat exchanger.

[0060] The utility model discloses a heat exchanger pipeline drying tool and a heat exchanger use method:

[0061] According to the stopper positioning, fix the heat exchanger pipeline drying tooling on the heat exchanger end cover 7 with studs and nuts, fasten the dry hot air pipeline to the pipeline 4 with a clamp, turn on the hot air blower and adjust it to the corresponding parameters, start the hot air system and the water vapor in the heat exchanger pipeline 8 will be completely discharged after 5 minutes.

[0062] The entire process of exhausting water vapor is achieved through an airflow drying method, the basic principle of which is:

[0063] Dry hot air or hot air flow is used to evaporate the moisture on the surface of the material, so that the moisture in the material is gradually evaporated to achieve the purpose of drying.

[0064] Drying with hot air or hot air flow usually includes two processes: drying process and conveying process. In the drying process, the dry hot air or hot air flow is sent to the surface or inside of the material through the heat exchanger pipeline drying tooling to evaporate the moisture in the material. In the conveying process, the material is continuously conveyed to the place where the dry hot air or hot air flow is received during the drying process to ensure that every part of the material can be fully dried, thereby achieving the effect of overall drying.

[0065] Through the above principle and design of the utility model, the humid water vapor in the heat exchanger pipeline 8 can be effectively discharged so that the entire heat exchanger pipeline 8 can achieve a drying effect.

[0066] After the above principle design is used and approved, the second flange 5 of the heat exchanger pipe drying tooling is fastened to the heat exchanger pipe drying tooling with bolts, and then the expanded metal sealing strip 6 of the heat exchanger pipe drying tooling is fastened to the second flange 5 of the heat exchanger pipe drying tooling with hexagon socket screws, so that the entire tooling design completely covers all heat exchanger models.

[0067] The utility model discloses a heat exchanger pipeline drying tool, which has a simple, reasonable and compact structure. Compared with the prior art, it can effectively discharge water vapor in the heat exchanger pipeline, reduce labor intensity and save electricity resources, and eliminate the risk of product operation under certain working conditions without increasing labor intensity and quality risks, thereby solving the risk of pipeline corrosion under certain working conditions.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that modifying the technical solutions recorded in the aforementioned embodiments, or replacing part or all of the technical features therein by equivalents, does not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A heat exchanger pipeline drying tool, characterized in that: include: A first flange (1), a housing (2), a partition (3) and a drying pipeline (4); The first flange (1) is arranged at the end of the heat exchanger housing (9) or the first flange (1) is arranged at the end of the heat exchanger housing (9) through the second flange (5); a housing (2) is arranged on the side of the first flange (1) away from the heat exchanger; an air inlet and an air outlet are arranged at the upper and lower ends of the housing (2); a drying pipeline (4) is arranged at the air inlet of the housing (2); A hot air passage cavity is formed between the first flange (1) and the outer shell (2); a partition (3) is arranged transversely in the hot air passage cavity; one end of the partition (3) is connected to the inner wall of the outer shell (2); and the other end of the partition (3) is arranged on the first crossbeam (11).

2. The heat exchanger pipe drying tool according to claim 1, characterized in that: When the first flange (1) is arranged at the end of the heat exchanger shell (9), a protrusion is arranged in the middle of the first flange (1); the protrusion is embedded in the heat exchanger end plate (7) at the end of the heat exchanger shell (9).

3. The heat exchanger pipe drying tool according to claim 2, characterized in that: The outer diameter of the protrusion of the first flange (1) is adapted to the inner diameter of the heat exchanger end plate (7).

4. The heat exchanger pipe drying tool according to claim 2, characterized in that: The protruding length of the first flange (1) is adapted to the depth of the heat exchanger end plate (7).

5. The heat exchanger pipe drying tool according to claim 2, characterized in that: When the first flange (1) is arranged at the end of the heat exchanger housing (9) through the second flange (5), the second flange (5) is fixedly matched with the heat exchanger end plate (7).

6. The heat exchanger pipe drying tool according to claim 5, characterized in that: A metal sealing strip (6) is arranged inside the second flange (5).

7. A heat exchanger, characterized in that: include: A heat exchanger shell (9), a heat exchanger pipeline (8), and a heat exchanger pipeline drying tool as claimed in any one of claims 1 to 6; A heat exchanger pipeline (8) is laid inside the heat exchanger shell (9); a heat exchanger end plate (7) is arranged at the open end of the heat exchanger shell (9); and a heat exchanger pipeline drying tool is arranged on the side of the heat exchanger end plate (7) facing away from the heat exchanger.

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