Internal exhaust device of hydrogen cooler and hydrogen cooler

Abstract

The utility model discloses an internal exhaust device of a hydrogen cooler and the hydrogen cooler, the internal exhaust device of the hydrogen cooler comprises a fixing piece, an exhaust joint and an exhaust pipe, the fixing piece is fixedly connected to the inner top of the hydrogen cooler; the exhaust joint is arranged at the bottom of the hydrogen cooler in a penetrating manner and is provided with an exhaust hole penetrating through the whole length of the exhaust joint; the upper end of the exhaust pipe is fixedly connected with the fixing piece, an end opening of the upper end extends upwards, a gap is reserved between the end opening of the upper end and the top wall of the hydrogen cooler, and the lower end of the exhaust pipe is fixedly connected with the exhaust connector and communicated with the exhaust hole. Air in the hydrogen cooler is led out and exhausted into the workshop floor drain through the exhaust pipe and the exhaust connector, high-point exhaust can be conveniently achieved at a low point, climbing operation is not needed, and potential safety hazards caused by climbing operation can be avoided. The internal exhaust device of the hydrogen cooler is simple in structure and good in exhaust effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power plant generator hydrogen cooling technical field especially, relates to a hydrogen cooler internal exhaust device and hydrogen cooler. BACKGROUND

[0002] The steam turbine generator unit of a certain nuclear power plant is reformed to improve power during overhaul. The hydrogen cooler needs to be improved for capacity expansion. Each generator has four hydrogen coolers, which are installed vertically in the shaft of the generator. The air in the water chamber of the hydrogen cooler needs to be removed before the hydrogen cooler is filled with water to ensure normal circulation of the cooling water.

[0003] The traditional exhaust method is to set an exhaust valve above the water chamber of the hydrogen cooler. The hydrogen cooler needs to be set up a scaffold every time it is filled with water and exhaust. The operator climbs to the top of the generator (4m high) to operate, which is not safe and easy to wet the generator shell. UTILITY MODEL CONTENT

[0004] The utility model provides a hydrogen cooler internal exhaust device and hydrogen cooler.

[0005] The utility model adopts the technical scheme in the technical problem is solved: a hydrogen cooler internal exhaust device, comprising:

[0006] A fixing member is fixedly connected to the inner top of the hydrogen cooler.

[0007] An exhaust connector is provided through the bottom of the hydrogen cooler and is provided with an exhaust hole through the entire length of the exhaust connector.

[0008] An exhaust pipe is fixedly connected to the upper end of the fixing member, and the upper end port extends upward and leaves a gap with the top wall of the hydrogen cooler. The lower end is fixedly connected to the exhaust connector and communicates with the exhaust hole.

[0009] In some embodiments, the exhaust connector includes a sleeve joint and a pipe seat provided through the bottom of the hydrogen cooler. The two ends of the sleeve joint are connected to the exhaust pipe and the pipe seat, respectively.

[0010] In some embodiments, the exhaust hole includes a through hole provided in the interior of the sleeve joint and a screw hole provided in the interior of the pipe seat. The exhaust pipe, the through hole and the screw hole are sequentially communicated.

[0011] In some embodiments, the fixing member is a hollow structure.

[0012] In some embodiments, the fixing member is a U-shaped structure, and the fixing member bottom is provided with a limiting hole for the exhaust pipe to pass through.

[0013] In some embodiments, the ferrule joint and the pipe seat are respectively made of stainless steel material, the pipe seat is made of stainless steel material, and the exhaust pipe is made of polytetrafluoroethylene material.

[0014] In some embodiments, a temporary plug is further included, which is arranged outside the hydrogen cooler and plugs one end of the exhaust joint away from the exhaust pipe.

[0015] The utility model discloses still constructed a kind of hydrogen cooler, including hydrogen cooler main body, upper water chamber, lower water chamber and the hydrogen cooler internal exhaust device of any one described above, the upper end of the hydrogen cooler main body is connected with the upper water chamber, the lower end of the hydrogen cooler main body is connected with the lower water chamber;

[0016] The fixing member is welded and fixed with the top wall of the upper water chamber, the exhaust joint is arranged through the bottom wall of the lower water chamber, and the exhaust pipe penetrates the hydrogen cooler main body, and the two ends of the exhaust pipe are arranged in the upper water chamber and the lower water chamber respectively.

[0017] In some embodiments, the exhaust joint includes a ferrule joint and a pipe seat, and the two ends of the ferrule joint are connected with the exhaust pipe and the pipe seat respectively.

[0018] The bottom wall of the lower water chamber is provided with a mounting hole communicating the inside and outside of the lower water chamber, and the pipe seat is connected with the mounting hole.

[0019] In some embodiments, the pipe seat is welded and fixed with the mounting hole.

[0020] By implementing the utility model, the following beneficial effects are achieved:

[0021] The hydrogen cooler internal exhaust device includes a fixing member, an exhaust joint and an exhaust pipe. The fixing member is fixedly connected to the inner top of the hydrogen cooler. The exhaust joint is arranged through the bottom of the hydrogen cooler and is provided with an exhaust hole penetrating the entire length of the exhaust joint. The upper end of the exhaust pipe is fixedly connected with the fixing member. The upper end port extends upward and leaves a gap with the top wall of the hydrogen cooler. The lower end of the exhaust pipe is fixedly connected with the exhaust joint and communicates with the exhaust hole. The air in the hydrogen cooler is led out and discharged to the outside of the hydrogen cooler through the exhaust pipe and the exhaust joint, which facilitates high-point exhaust at low point. The hydrogen cooler internal exhaust device does not require climbing operation, which can avoid the safety hazards caused by climbing operation. The structure is simple, and the exhaust effect is good.

[0022] This utility model discloses a hydrogen cooler comprising a hydrogen cooler body, an upper water chamber, a lower water chamber, and an internal exhaust device as described above. The upper end of the hydrogen cooler body is connected to the upper water chamber, and the lower end of the hydrogen cooler body is connected to the lower water chamber. A fixing member is welded and fixed to the top wall of the upper water chamber. An exhaust connector is disposed through the bottom wall of the lower water chamber. An exhaust pipe penetrates the hydrogen cooler body, with its two ends respectively located in the upper and lower water chambers. By connecting the exhaust pipe to the upper water chamber, air inside the upper water chamber can be drawn out. The exhaust pipe is connected to the exhaust connector, allowing air to be discharged to the outside. This facilitates exhaust from the upper water chamber at a low point, reducing the need for high-altitude work and avoiding safety hazards associated with working at heights. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a hydrogen cooler according to an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A schematic diagram of the internal exhaust device of the hydrogen cooler in the diagram;

[0026] Figure 3 yes Figure 2 An enlarged schematic diagram of the I structure in the image;

[0027] Figure 4 yes Figure 2 An enlarged schematic diagram of the II structure. Detailed Implementation

[0028] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0030] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0031] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be chemically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] Referring to Figures 1 to 4 An embodiment of the utility model discloses a hydrogen cooler, which is widely applicable to vertical cooler. The hydrogen cooler comprises a hydrogen cooler body 1, an upper water chamber 2, a lower water chamber 3 and a hydrogen cooler internal exhaust device, the upper end of the hydrogen cooler body 1 is connected with the upper water chamber 2, and the lower end of the hydrogen cooler body 1 is connected with the lower water chamber 3. Wherein, the hydrogen cooler body 1 comprises a cylinder body and a heat transfer tube bundle, and the lower water chamber 3 is also connected with a water inlet flange and a water outlet flange respectively.

[0033] When the equipment is filled with water, the cooling water enters the lower water chamber 3 through the water inlet flange, flows into the hydrogen cooler body 1, then enters the upper water chamber 2, and the cooling water flows out through the water outlet flange after heat exchange through the heat transfer tube bundle. In this process, the air in the water chamber of the hydrogen cooler body 1 is gradually concentrated upwards into the upper water chamber 2 and is discharged through the hydrogen cooler internal exhaust device. In order to avoid setting the exhaust valve 9 at the high point, avoid climbing operation, eliminate the safety hazard, the hydrogen cooler internal exhaust device is set.

[0034] As Figure 2As shown, the internal exhaust device of the hydrogen cooler includes a fixing member 5, an exhaust connector 6, and an exhaust pipe 8. The fixing member 5 is fixedly connected to the inner top of the hydrogen cooler to limit the exhaust pipe 8 and prevent it from moving laterally. Specifically, the fixing member 5 is welded to the top wall of the upper water chamber 2. The exhaust connector 6 is located through the bottom of the hydrogen cooler to fix and connect the exhaust pipe 8, thereby venting air. Specifically, the exhaust connector 6 is located through the bottom wall of the lower water chamber 3. The exhaust connector 6 has an exhaust hole 7 that extends through the entire length of the exhaust connector 6, meaning that the exhaust hole 7 can connect to the external spaces at opposite ends of the exhaust connector 6. The upper part of the exhaust pipe 8 is fixedly connected to the fixing member 5, and the fixing member 5 and the exhaust pipe 8 are detachably connected to facilitate replacement of the exhaust pipe 8 when necessary. The upper end of the exhaust pipe 8 extends upward and leaves a gap with the top wall of the hydrogen cooler, while the lower end of the exhaust pipe 8 is fixedly connected to the exhaust connector 6 and communicates with the exhaust hole 7. Specifically, the exhaust pipe 8 penetrates the main body 1 of the hydrogen cooler, with its two ends located in the upper water chamber 2 and the lower water chamber 3, respectively. The upper port of the exhaust pipe 8 is inclined to prevent the entire upper port from abutting against the top of the upper water chamber 2, thus restricting air from entering the exhaust pipe 8. Furthermore, the upper port is positioned as close as possible to the top wall of the upper water chamber 2 to maximize air exhaust.

[0035] The position of the exhaust pipe 8 is defined by the fastener 5 and the exhaust connector 6, so that the upper end of the exhaust pipe 8 is located in the water chamber 2. When the equipment is filled with water, the air gradually rises and concentrates into the water chamber 2 and is discharged through the exhaust pipe 8 and the exhaust connector 6.

[0036] like Figure 3 The diagram illustrates the specific structure of the exhaust connector 6. In some embodiments, the exhaust connector 6 includes a compression fitting 61 and a tube seat 62 extending through the bottom of the hydrogen cooler. The two ends of the compression fitting 61 are connected to the exhaust pipe 8 and the tube seat 62, respectively. The compression fitting 61 is used to fix and connect the exhaust pipe 8, and the tube seat 62 provides a mounting base. The tube seat 62 extends through the bottom of the hydrogen cooler and is slightly higher than the wall thickness of the bottom of the hydrogen cooler to facilitate installation and fixation. In some embodiments, the compression fitting 61 and the tube seat 62 are made of stainless steel, and the exhaust pipe 8 is made of polytetrafluoroethylene (PTFE). The tube seat 62 is welded to the bottom of the hydrogen cooler, and both the tube seat 62 and the compression fitting 61 are threaded to prevent leakage.

[0037] In some embodiments, the bottom wall of the drain chamber 3 is provided with a mounting hole 4 that connects the interior and exterior of the drain chamber 3, and the pipe seat 62 is connected to the mounting hole 4. It can be understood that the mounting hole 4 is opened in the bottom wall of the drain chamber 3, and correspondingly, the pipe seat 62 is set in the same position as the mounting hole 4, and the exhaust pipe 8 is arranged in the same way.

[0038] The outer diameter of the pipe seat 62 is equal to or slightly smaller than the diameter of the mounting hole 4, the inner diameter of the pipe seat 62 is slightly larger than or equal to the outer diameter of the exhaust joint 6, and the inner diameter of the exhaust joint 6 is equal to or slightly larger than the outer diameter of the exhaust pipe 8.

[0039] In some embodiments, the pipe seat 62 is welded and fixed with the mounting hole 4. Specifically, the outer periphery of the pipe seat 62 is welded and fixed with the bottom wall of the downcomer 3, for example, the outer periphery of the pipe seat 62 is welded and fixed with the inner bottom wall of the downcomer 3, and the welding range covers the gap between the pipe seat 62 and the mounting hole 4, which can realize sealing while strengthening the fixation of the pipe seat 62. It can be understood that in other embodiments, the outer periphery of the pipe seat 62 is also welded and fixed with the outer bottom wall of the downcomer 3, and the welding range covers the gap between the pipe seat 62 and the mounting hole 4, which can double-fix the pipe seat 62 while realizing double-sealing.

[0040] In some embodiments, the exhaust hole 7 includes a through hole 71 opened in the inner part of the sleeve joint 61 and a threaded hole 72 opened in the inner part of the pipe seat 62, and the exhaust pipe 8, the through hole 71 and the threaded hole 72 are sequentially communicated. The hole diameter of the exhaust pipe 8 is smaller than the diameter of the through hole 71, and the diameter of the through hole 71 is smaller than the diameter of the threaded hole 72.

[0041] In some embodiments, the fixing part 5 is a hollow structure. While limiting the exhaust pipe 8, it allows air to circulate. For example, as shown in Figure 4 The fixing part 5 is a U-shaped structure, and the fixing part 5 is provided with a limiting hole 51 at the bottom for the exhaust pipe 8 to pass through. During installation, the exhaust pipe 8 is inserted into the limiting hole 51 from the bottom to limit the exhaust pipe 8 and prevent it from moving horizontally.

[0042] In some embodiments, the internal exhaust device of the hydrogen cooler further comprises a temporary plug 9 arranged outside the hydrogen cooler, and the temporary plug 9 is plugged with the end of the exhaust joint 6 away from the exhaust pipe 8. It can prevent foreign matter from entering during manufacturing and transportation. After the temporary plug 9 is removed during on-site installation, the exhaust pipe 8 can be connected to the pipeline and the control valve.

[0043] The assembly method of the utility model is to open the mounting hole 4, weld the pipe seat 62, connect the pipe seat 62 and the sleeve joint 61, and weld and fix the fixing part 5 with the upper water chamber 2 during the manufacturing of the hydrogen cooler, to complete the preliminary assembly.

[0044] The exhaust method of the utility model is that when the equipment is filled with water, the cooling water enters the hydrogen cooler through the inlet flange, the air in the hydrogen cooler is extruded to the top of the upper water chamber 2, and the air at the top of the upper water chamber 2 is concentrated and discharged from the hydrogen cooler through the exhaust pipe 8, the sleeve joint 61 and the pipe seat 62 of the downcomer 3, so as to realize the internal exhaust of the hydrogen cooler.

[0045] By implementing the utility model, the following beneficial effects are achieved:

[0046] The hydrogen cooler internal exhaust device of the utility model, through exhaust pipe 8 and exhaust joint 6, air in the hydrogen cooler is led out and is arranged to the outside of the hydrogen cooler, and high point exhaust is realized conveniently at low point. The hydrogen cooler internal exhaust device does not need to climb and operate, and can avoid the security risks brought by climbing operation. The structure is simple, and the exhaust effect is good.

[0047] The hydrogen cooler of the utility model, through exhaust pipe 8 connecting upper water chamber 2, air in upper water chamber 2 can be led out, exhaust pipe 8 is communicated with exhaust joint 6, and air is further led out outside through exhaust joint 6. Upper water chamber 2 exhaust is realized conveniently at low point, high altitude operation is reduced, and the security risks brought by climbing operation are avoided.

[0048] It can be understood that the above embodiments only express the preferred embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled person in the art, the above-mentioned embodiments or technical features can be freely combined without departing from the concept of the utility model, and several modifications and improvements can be made, which belong to the protection scope of the utility model, that is, the embodiments described in " in some embodiments " can be freely combined with any embodiment above and below; therefore, all equivalent transformations and modifications with the utility model claim scope should belong to the coverage of the utility model claim.

Claims

1. A hydrogen cooler internal exhaust device characterized by, The utility model relates to a hydrogen cooler internal exhaust device, including: A fixing part (5) is fixedly connected to the inner top of the hydrogen cooler; An exhaust joint (6) is arranged through the bottom of the hydrogen cooler and is provided with an exhaust hole (7) penetrating through the whole length of the exhaust joint (6); An exhaust pipe (8) is fixedly connected to the upper end of the fixing part (5), the upper end port of the exhaust pipe (8) extends upward and leaves a gap with the top wall of the hydrogen cooler, and the lower end of the exhaust pipe (8) is fixedly connected to the exhaust joint (6) and communicates with the exhaust hole (7).

2. The hydrogen cooler internal exhaust apparatus according to claim 1, wherein, The exhaust joint (6) includes a sleeve joint (61) and a pipe base (62) arranged through the bottom of the hydrogen cooler, and the two ends of the sleeve joint (61) are connected to the exhaust pipe (8) and the pipe base (62) respectively.

3. The hydrogen gas cooler internal exhaust apparatus according to claim 2, characterized by, The exhaust hole (7) includes a through hole (71) arranged in the sleeve joint (61) and a threaded hole (72) arranged in the pipe base (62), and the exhaust pipe (8), the through hole (71) and the threaded hole (72) communicate in sequence.

4. The hydrogen gas cooler internal exhaust apparatus according to claim 1, characterized by, The fixing part (5) is a hollow structure.

5. The hydrogen gas cooler internal exhaust apparatus according to claim 4, characterized by, The fixing part (5) is a U-shaped structure, and a limiting hole (51) for the exhaust pipe (8) to pass through is arranged in the bottom of the fixing part (5).

6. The hydrogen-cooler internal exhaust apparatus according to claim 2 or 3, characterized by The sleeve joint (61) and the pipe base (62) are made of stainless steel, the pipe base (62) is made of stainless steel, and the exhaust pipe (8) is made of polytetrafluoroethylene.

7. The hydrogen-cooled internal exhaust apparatus according to any one of claims 1 to 5, characterized by Further comprising: A temporary plug (9) is arranged outside the hydrogen cooler and is plugged into the end of the exhaust joint (6) away from the exhaust pipe (8).

8. A hydrogen cooler characterized by, The utility model relates to a hydrogen cooler internal exhaust device, including: A fixing part (5) is fixedly connected to the inner top of the hydrogen cooler; 9. The hydrogen gas cooler according to claim 8, characterized by An exhaust joint (6) is arranged through the bottom of the hydrogen cooler and is provided with an exhaust hole (7) penetrating through the whole length of the exhaust joint (6); An exhaust pipe (8) is fixedly connected to the upper end of the fixing part (5), the upper end port of the exhaust pipe (8) extends upward and leaves a gap with the top wall of the hydrogen cooler, and the lower end of the exhaust pipe (8) is fixedly connected to the exhaust joint (6) and communicates with the exhaust hole (7).

10. The hydrogen gas cooler according to claim 9, characterized by The exhaust joint (6) includes a sleeve joint (61) and a pipe base (62) arranged through the bottom of the hydrogen cooler, and the two ends of the sleeve joint (61) are connected to the exhaust pipe (8) and the pipe base (62) respectively. The exhaust hole (7) includes a through hole (71) arranged in the sleeve joint (61) and a threaded hole (72) arranged in the pipe base (62), and the exhaust pipe (8), the through hole (71) and the threaded hole (72) communicate in sequence. The fixing part (5) is a hollow structure. The fixing part (5) is a U-shaped structure, and a limiting hole (51) for the exhaust pipe (8) to pass through is arranged in the bottom of the fixing part (5). The sleeve joint (61) and the pipe base (62) are made of stainless steel, the pipe base (62) is made of stainless steel, and the exhaust pipe (8) is made of polytetrafluoroethylene. Further comprising: A temporary plug (9) is arranged outside the hydrogen cooler and is plugged into the end of the exhaust joint (6) away from the exhaust pipe (8). The utility model relates to a hydrogen cooler internal exhaust device, including: A fixing part (5) is fixedly connected to the inner top of the hydrogen cooler; An exhaust joint (6) is arranged through the bottom of the hydrogen cooler and is provided with an exhaust hole (7) penetrating through the whole length of the exhaust joint (6); An exhaust pipe (8) is fixedly connected to the upper end of the fixing part (5), the upper end port of the exhaust pipe (8) extends upward and leaves a gap with the top wall of the hydrogen cooler, and the lower end of the exhaust pipe (8) is fixedly connected to the exhaust joint (6) and communicates with the exhaust hole (7). The exhaust joint (6) includes a sleeve joint (61) and a pipe base (62) arranged through the bottom of the hydrogen cooler, and the two ends of the sleeve joint (61) are connected to the exhaust pipe (8) and the pipe base (62) respectively. The bottom wall of the lower water chamber (3) is provided with a mounting hole (4) communicating the inside and outside of the lower water chamber (3), and the pipe base (62) is connected to the mounting hole (4). The pipe base (62) and the mounting hole (4) are welded and fixed.

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