Smoke exhaust pipe hole plugging structure
By using a combination structure of inclined shielding and fireproof cotton at the holes of the smoke exhaust pipe, the problem of smoke passing through when the smoke exhaust pipe passes through the floor is solved, effective sealing of smoke and fire control are achieved, and safety and Easy to install.
Patent Information
- Application Number
- CN202420947068.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In nuclear power plants, when the smoke exhaust pipe passes through the floor, the fireproof cotton cannot effectively prevent the smoke from passing through, resulting in the spread of fire and the problem of smoke passing through the floor.
The structure includes floor slabs, smoke exhaust pipes, fireproof cotton and shielding members. The bottom surface of the shielding member is a slope, which gradually decreases along the hole, plays a guiding role, reduces the possibility of smoke gathering and passing through the hole, and in A second shield is added if necessary to further reduce flue gas penetration.
Effectively reduces the possibility of smoke passing through holes, reduces the risk of fire spread, and improves the reliability and waterproof performance of fire-resistant cotton, simplifying the installation and maintenance process.
Smart Images
Figure CN222227589U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a smoke exhaust pipe hole blocking structure. Background Art
[0002] In a nuclear power plant, multiple emergency diesel generators are used. In order to ensure the safe operation of the generator, a smoke exhaust pipe is provided to discharge the high-temperature smoke generated when the generator is running out of the plant through the smoke exhaust pipe. Since one end of the smoke exhaust pipe is connected to the diesel engine and the other end is arranged outdoors, the middle of the smoke exhaust pipe needs to pass through the plant floor. When the smoke exhaust pipe passes through the floor, a hole needs to be opened in the floor. Due to the internal disaster protection design requirements of the diesel engine plant, these holes of the smoke exhaust pipe need to meet fire protection requirements to prevent the spread of fire between floors. Therefore, in some embodiments, fireproof cotton is filled in the hole to block the hole. However, when a large amount of smoke gathers in the hole, there is a situation where the smoke passes through the fireproof cotton and passes through the floor. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a smoke exhaust pipe hole blocking structure, which can effectively reduce the accumulation of smoke in the hole, so as to reduce the possibility of smoke passing through the floor.
[0004] The smoke exhaust pipe hole blocking structure according to the embodiment of the utility model includes: a floor slab, a smoke exhaust pipe, fireproof cotton and a first shielding member.
[0005] The floor slab has a first surface and a second surface opposite to each other, and a hole connecting the first surface and the second surface, the smoke exhaust pipe is inserted into the hole, the fireproof cotton is arranged in the hole and surrounds the outer wall of the smoke exhaust pipe, the first shielding member has a first mounting hole, the first shielding member is connected to the first surface and covers the hole, the smoke exhaust pipe is inserted into the first mounting hole, the bottom surface of the first shielding member is a first guide surface, and the vertical distance between the first guide surface and the first surface gradually decreases from the edge of the first mounting hole to the outer edge of the first shielding member.
[0006] The smoke exhaust pipe hole blocking structure according to the embodiment of the utility model has at least the following beneficial effects:
[0007] In this embodiment, the vertical distance between the bottom surface of the first shielding member and the first surface gradually decreases from the edge of the first mounting hole to the outer edge of the first shielding member, that is, the bottom surface of the first shielding member is an inclined surface. Therefore, when a fire occurs in the lower layer, firstly, the first shielding member can effectively reduce the smoke from penetrating into the upper layer space through the hole. Secondly, the inclined surface can play a certain role in guiding the smoke, thereby reducing the accumulation of smoke at the hole of the smoke exhaust pipe, and further reducing the smoke from penetrating into the upper layer space through the hole.
[0008] According to some embodiments of the present invention, the smoke exhaust pipe hole blocking structure further includes a second shielding member, the second shielding member has a second mounting hole, the second shielding member is connected to the second surface and covers the hole, and the smoke exhaust pipe is passed through the second mounting hole;
[0009] The top surface of the second shielding member is parallel to the second surface of the floor; or,
[0010] The top surface of the second shielding member is a second flow-guiding surface, and the vertical distance between the second flow-guiding surface and the second surface gradually decreases along the hole edge of the second mounting hole to the outer edge of the second shielding member.
[0011] According to some embodiments of the present invention, there is a gap between the outer wall of the smoke exhaust pipe and the hole wall of the first mounting hole; and / or,
[0012] There is a gap between the outer wall of the smoke exhaust pipe and the hole wall of the second mounting hole.
[0013] According to some embodiments of the utility model, the smoke exhaust pipe hole blocking structure also includes thermal insulation cotton, and the thermal insulation cotton is wound around the outer wall of the smoke exhaust pipe.
[0014] According to some embodiments of the utility model, the fireproof cotton and the thermal insulation cotton are both aluminum silicate cotton.
[0015] According to some embodiments of the present invention, the first shielding member includes a plurality of split first plates, and the plurality of first plates are connected to define and form the first mounting hole; and / or,
[0016] The second shielding member further includes a plurality of split second plates, and the plurality of second plates are connected to define and form the second mounting hole.
[0017] According to some embodiments of the present invention, the first plate body is detachably connected to the floor slab; and / or,
[0018] The second plate body is detachably connected to the floor slab.
[0019] According to some embodiments of the present invention, the angle between the first guide surface and the first surface ranges from 5° to 15°.
[0020] According to some embodiments of the present invention, the smoke exhaust pipe hole sealing structure further includes a water retaining member, wherein the water retaining member is connected to the second surface and surrounds the outside of the hole.
[0021] According to some embodiments of the present utility model, the floor slab is a concrete structure, and the water retaining member is cast with the floor slab to form an integrated structure.
[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:
[0024] Figure 1 This is a schematic diagram of a smoke exhaust pipe hole blocking structure according to a first embodiment of the utility model;
[0025] Figure 2 This is a schematic diagram of a second smoke exhaust pipe hole blocking structure according to an embodiment of the present utility model;
[0026] Figure 3 This is a schematic diagram of a smoke exhaust pipe hole blocking structure according to a third embodiment of the utility model;
[0027] Figure 4 This is a schematic diagram of a smoke exhaust pipe hole blocking structure according to a fourth embodiment of the utility model;
[0028] Figure 5 This is a schematic diagram of a smoke exhaust pipe hole blocking structure according to a fifth embodiment of the utility model.
[0029] Reference numerals:
[0030] Floor 100, first surface 110, second surface 120, hole 130;
[0031] Smoke exhaust pipe 200, fireproof cotton 300;
[0032] A first shielding member 400, a first mounting hole 410, and a first guide surface 420;
[0033] A second shielding member 500, a second mounting hole 510, and a second guide surface 520;
[0034] Thermal insulation cotton 600, water retaining parts 700. DETAILED DESCRIPTION
[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0037] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0039] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0040] Smoke exhaust ducts are usually used to exhaust indoor smoke to the outside through exhaust machinery. They are widely used in construction projects such as restaurants, guesthouses, hospitals, factories, shopping malls and office buildings.
[0041] For example, a number of emergency diesel generators are used in a nuclear power plant. In order to ensure the safe operation of the generator, a smoke exhaust pipe is provided to discharge the high-temperature smoke generated when the generator is running out of the plant through the smoke exhaust pipe. Since one end of the smoke exhaust pipe is connected to the diesel engine and the other end is arranged outdoors, the middle of the smoke exhaust pipe needs to pass through the plant floor. When the smoke exhaust pipe passes through the floor, a hole needs to be opened in the floor. Due to the internal disaster protection design requirements of the diesel engine plant, these holes of the smoke exhaust pipe need to meet fire protection requirements to prevent the spread of fire between floors. Therefore, in some embodiments, fireproof cotton is filled in the hole to block the hole. However, when a large amount of smoke gathers in the hole, there is a situation where the smoke passes through the fireproof cotton and passes through the floor.
[0042] Based on the above problems, the present invention proposes a smoke exhaust pipe hole blocking structure, which can effectively reduce the smoke from passing through the hole 130. Figure 1 , Figure 1 Schematic diagram of the first smoke exhaust pipe hole blocking structure of the utility model embodiment. The smoke exhaust pipe hole blocking structure of this embodiment includes:
[0043] The smoke exhaust pipe hole blocking structure according to the embodiment of the utility model includes: a floor 100, a smoke exhaust pipe 200, fireproof cotton 300, a second shielding member 500 and a first shielding member 400.
[0044] Among them, the floor 100 is, for example, a concrete floor 100 or a steel structure floor 100, and the floor 100 has a first surface 110 and a second surface 120 opposite to each other, and a hole 130 connecting the first surface 110 and the second surface 120, the second surface 120 is located above the first surface 110, that is, the second surface 120 is the top surface of the floor 100, and the first surface 110 is the bottom surface of the floor 100, and the smoke exhaust pipe 200 is penetrated by the hole 130, and the smoke exhaust pipe 200 is used, for example, to discharge the high-temperature flue gas of the nuclear power plant generator. The fireproof cotton 300 may be, for example, aluminum silicate firewool, ceramic fiber wool, glass fiber wool, and silicon carbide wool. The fireproof cotton 300 is disposed in the hole 130 and surrounds the outer wall of the smoke exhaust pipe 200 to seal the hole, thereby preventing the fire from spreading between floors through the hole. At the same time, it isolates the heat transfer between the smoke exhaust pipe 200 and the floor 100, thereby preventing the high temperature of the smoke exhaust pipe 200 from being transferred to the floor 100, effectively reducing the damage caused by the high temperature to the floor 100 and other structures arranged on the floor 100.
[0045] The first shielding member 400 is, for example, any plate with fireproof function such as steel plate, glass wool plate and cement plate. The first shielding member 400 has a first mounting hole 410. The first shielding member 400 is connected to the first surface 110 of the floor 100 by means of screws, rivets or welding, and is sleeved on the outside of the smoke exhaust pipe 200, that is, the smoke exhaust pipe 200 is passed through the first mounting hole 410 of the first shielding member 400, and the first shielding member 400 covers the hole 310. On the one hand, the first shielding member 400 covers the hole 310, which can effectively prevent smoke from passing through the hole 130, thereby reducing the possibility of smoke penetrating into the upper space through the hole 130 (with the floor as a reference, the space above the floor 100 is the upper space, and the space below the floor 100 is the lower space, unless otherwise specified, the same below). On the other hand, the first shielding member 400 located at the lower edge of the hole 130 can also support the fireproof cotton 300, thereby improving the reliability of the fireproof cotton 300.
[0046] Furthermore, in the present embodiment, the bottom surface of the first shielding member 400 is the first guide surface 420. The vertical distance between the first guide surface 420 and the first surface 110 gradually decreases from the edge of the first mounting hole 410 to the outer edge of the first shielding member 400, which can further reduce the smoke passing through the hole 130. Specifically, when a fire breaks out indoors, the fire source above the fire source and the flowing smoke generated by the combustion are usually referred to as fire plumes. Above the fire source area is the plume area of the combustion product, i.e., the smoke, whose flow is completely controlled by the buoyancy effect. Due to the buoyancy, the smoke flow will form a hot smoke mass, which moves upward under the action of buoyancy. When the smoke contacts the floor 100, the smoke will flow along the surface of the floor 100, i.e., the first surface 110 of the present embodiment. Based on this, in this embodiment, the first guide surface 420 is set as an inclined surface. For example, the outer contour of the first shielding member 400 is circular, and the lower fireproof board is an inverted truncated cone structure as a whole. Therefore, when the fire source is located below the first shielding member 400, in the process of smoke flowing upward, when the smoke contacts the first guide surface 420, since the first guide surface 420 is an inclined surface, the smoke can flow to the first surface 110 under the guiding effect of the inclined surface, thereby preventing the smoke from gathering at the hole of the smoke exhaust pipe, thereby reducing the smoke from penetrating into the upper space through the hole 130. If the fire source is not below the first shielding member 400, the smoke will flow along the first surface 110 to the hole 130. After contacting the first guide surface 420, the guide of the first guide surface 420 will jump over the hole 130, thereby reducing the smoke from gathering at the hole 130, and further reducing the possibility of the smoke passing through the hole 130.
[0047] Furthermore, the exterior of the first shielding member 400 includes fireproof silicon cloth, which can not only improve the high temperature resistance of the first shielding member 400 but also reduce the heat of the smoke exhaust pipe 200 being transferred to the floor 100 via the first shielding member 400 .
[0048] It should be noted that, in the present embodiment, the smoke exhaust pipe 200 is not limited to a round pipe, but may also be a square pipe. Correspondingly, the hole 130 and the first mounting hole 410 may be set as a round hole or a square hole.
[0049] Based on the above embodiment, the angle α between the first guide surface 420 and the first surface 110 is in the range of 5° to 15°. Specifically, it can be understood that if α is too large, when the fire source is located below the first shielding member 400, the smoke will flow too slowly along the first surface 110 after being guided by the lower first guide surface 420, thereby causing the smoke to gather at the hole 130, thereby increasing the risk of the smoke passing through the hole 130. If the fire source deviates from the position of the first shielding member 400, that is, when the smoke flows along the first surface 110 to the hole 130, the first guide surface 420 will form a greater obstruction to the smoke, thereby increasing the risk of the smoke passing through the hole 130. And when α is too large, under the same covering area, the volume of the first shielding member 400 is larger, thereby increasing the weight of the first shielding member 400, which will not only increase the manufacturing cost of the first shielding member 400, but also be inconvenient for workers to install it at high altitude. If α is too small, when the smoke flows upward to the first shielding member 400, the guiding effect of the first guide surface 420 will be low, and the smoke will also gather in large quantities at the hole 130. Based on this, the present embodiment sets α within a suitable range, thereby not only reducing the smoke gathering at the hole 130, but also reducing the manufacturing cost of the first shielding member 400 and making it more convenient for workers to install the first shielding member 400.
[0050] Reference Figure 2 , Figure 2 This is a schematic diagram of the second type of smoke exhaust pipe hole sealing structure of the utility model embodiment. In some embodiments, the smoke exhaust pipe hole sealing structure also includes a second shielding member 500, and the top surface of the second shielding member 500 is parallel to the second surface 120, or the top surface of the second shielding member 500 is a second guide surface 520, and the vertical distance between the second guide surface 520 and the second surface 120 gradually decreases along the hole edge of the second mounting hole 510 to the outer edge of the second shielding member 500. Specifically, like the first shielding member 400, the second shielding member 500 is, for example, any plate with fireproof function such as a steel plate, a glass wool plate and a cement plate. The second shielding member 500 is connected to the second surface 120 of the floor 100 by means of screws, rivets, welding or abutment. The second shielding member 500 has a second mounting hole 510. The second shielding member 500 is connected to the second surface 120 and covers the hole 130. The smoke exhaust pipe 200 is passed through the second mounting hole 510, thereby effectively reducing the smoke from penetrating through the upper space to the lower space. In addition, it is known that since the fireproof cotton 300 is usually a flexible structure, it may cause safety hazards if employees accidentally step on it. In this embodiment, the second shielding member 500 is set on the top of the fireproof cotton 300. Even if the employee accidentally steps on the hole 130, the second shielding member 500 can provide sufficient support force, thereby improving safety.
[0051] It should be noted that when the vertical distance between the second guide surface 520 and the second surface 120 gradually decreases from the hole edge of the second mounting hole 510 to the outer edge of the second shielding member 500, for example, when a fire occurs in the upper space, after the smoke contacts the second guide surface 520, it will be guided by the second guide surface 520, thereby reducing the accumulation of smoke in the cavity, so as to reduce the penetration of smoke in the upper space into the lower space through the hole 130. In addition, when water droplets fall from the upper space to the second guide surface 520, the water flow will flow to the second surface 120 under the guiding effect of the second guide surface 520, so that the water droplets gather on the top surface of the second shielding member 500 and enter the hole 130, thereby improving the waterproof performance of the hole 130.
[0052] In addition, similar to the angle α between the first guide surface 420 and the first surface 110 in the above embodiment, the angle β between the second guide surface 520 and the second surface 120 in this embodiment is in the range of 5° to 15°, which will not be described in detail here.
[0053] Reference Figure 3 , Figure 3 This is a schematic diagram of the third type of smoke exhaust pipe hole blocking structure of the utility model embodiment. In some embodiments, there is a gap between the outer wall of the smoke exhaust pipe 200 and the inner wall of the first mounting hole 410. Specifically, it can be understood that the smoke will form a certain impact on the pipe during the flow in the smoke exhaust pipe 200, causing the smoke exhaust pipe 200 to form a certain movement. If the smoke exhaust pipe 200 is in direct contact with the first shielding member 400, the part where the smoke exhaust pipe 200 and the first shielding member 400 are connected will be fatigue damaged due to the cyclic load. Based on this, this embodiment leaves a gap between the smoke exhaust pipe 200 and the hole wall of the first mounting hole 410, so that the smoke exhaust pipe 200 has a certain movement space, thereby preventing the smoke exhaust pipe 200 from fatigue damage at this place, so as to improve the service life of the smoke exhaust pipe 200. Similarly, in some embodiments, there is a gap between the smoke exhaust pipe 200 and the hole wall of the second mounting hole 510, which will not be repeated here.
[0054] Reference Figure 4 , Figure 4 This is a schematic diagram of the fourth smoke exhaust pipe hole blocking structure of the utility model embodiment. In some embodiments, the smoke exhaust pipe hole blocking structure further includes thermal insulation cotton 600, such as glass fiber wool, rock wool, and aluminum silicate wool, and the thermal insulation cotton 600 is wound around the outer wall of the smoke exhaust pipe 200. On the one hand, the high temperature of the smoke exhaust pipe 200 can be isolated to prevent the high temperature of the smoke exhaust pipe 200 from being transmitted to the external environment, thereby providing a more comfortable environment for the staff. On the other hand, the thermal insulation cotton 600 is wound around the outside of the smoke exhaust pipe 200, which can protect the smoke exhaust pipe 200 to a certain extent, thereby improving the service life of the smoke exhaust pipe 200.
[0055] Based on the above embodiment, the fireproof cotton 300 and the heat-insulating cotton 600 are both aluminum silicate cotton. Therefore, during the installation process, only one kind of cotton material can be used to complete the plugging of the hole 130 and the heat insulation of the smoke exhaust pipe 200. Specifically, aluminum silicate wool has good thermal stability, heat resistance and heat insulation, so aluminum silicate wool can simultaneously meet the fire prevention of the hole 130 and the heat insulation of the smoke exhaust pipe 200. Based on this, during the installation process, workers do not need to replace the cotton material when performing the two steps of plugging the hole 130 and heat insulation of the smoke exhaust pipe 200, thereby making the setting of the smoke exhaust pipe hole plugging structure simpler and more convenient, and the installation process has a higher fault tolerance rate, and there is no need to worry about workers mixing up the cotton materials when performing the two steps.
[0056] In some embodiments, the first shielding member 400 includes a plurality of split first plates, and the plurality of first plates are connected and define a second mounting hole 510. Specifically, it can be known that if the first shielding member 400 is an integrated structure, during the installation process, the first shielding member 400 needs to be installed on the floor 100 first, and then the smoke exhaust pipe 200 needs to be passed through the first mounting hole 410. Since the size of the first mounting hole 410 is similar to that of the smoke exhaust pipe 200, and the smoke exhaust pipe 200 is relatively long, the process of passing the smoke exhaust pipe 200 through the first mounting hole 410 is relatively troublesome. If the smoke exhaust pipe 200 is fixed first, the first shielding member 400 needs to be sleeved on the outside of the smoke exhaust pipe 200 from one end of the smoke exhaust pipe 200, and the first shielding member 400 needs to be moved along the smoke exhaust pipe 200 to the first surface 110, which is also relatively troublesome. Based on this, in order to make the installation of the first shielding member 400 more convenient, the present embodiment arranges the first shielding member 400 into a plurality of split first plates, and the plurality of first plates are connected and define a first installation hole 410. For example, the first shielding member 400 includes two first plates, and the two first plates form a semi-annular structure. During the installation process, the smoke exhaust pipe 200 can be first passed through the hole 130, and then the two first plates are arranged around the smoke exhaust pipe 200 and connected to the floor 100. It can be known that, since the size of the hole 130 is relatively larger than the first mounting hole 410, it is easier to pass the smoke exhaust pipe 200 through the hole 130, and after the smoke exhaust pipe 200 is fixed, the two first plates are respectively connected to the floor 100 and are defined around to form the first mounting hole 410, without having to be set from one end of the smoke exhaust pipe 200, so that the installation of the smoke exhaust pipe hole blocking structure of this embodiment is simpler, and the first shielding member 400 is a split-type multiple first plate body, and the worker needs to lift a first plate body and connect it to the floor 100 one by one each time. Compared with directly lifting a whole piece of the first shielding member 400, the user needs to lift the first plate body. The force required is smaller, so that the worker can install it more easily. Similarly, in some embodiments, the second shielding member 500 also includes multiple split second plates, and the multiple second plates are connected and defined to form the second mounting hole 510, which will not be repeated here.
[0057] In some embodiments, the first plate body is detachably connected to the floor 100, so that during maintenance, the first plate body can be removed first, and then the smoke exhaust pipe 200 can be replaced, so that the smoke exhaust pipe 200 can be disassembled and assembled more simply and conveniently. In addition, there is no need to disassemble multiple first plate bodies. For example, when there are two first plate bodies, only one of the first plate bodies needs to be disassembled, thereby reducing the number of disassembled fasteners and further improving the convenience of maintenance. Similarly, in some embodiments, the second plate body is detachably connected to the floor 100, which will not be described in detail here.
[0058] Reference Figure 5 , Figure 5 This is a schematic diagram of a fifth smoke exhaust pipe hole blocking structure of the utility model embodiment. In some embodiments, the smoke exhaust pipe hole blocking structure further includes a water retaining member 700, which is connected to the second surface 120 and surrounds the outside of the hole 130. Thus, water on the floor 100 can be blocked by the water retaining member 700, thereby preventing the water retaining member 700 on the floor 100 from flowing along the second surface 120 to the hole 130, thereby improving the waterproofness of the hole 130.
[0059] On the basis of the above embodiment, the floor 100 is a concrete structure, and the water retaining member 700 is cast with the floor 100 to form an integrated structure, thereby simplifying the installation steps of the water retaining member 700. Specifically, if the water retaining member 700 and the floor 100 are split structures, it is necessary to set the connection structure between the water retaining member 700 and the floor 100 during the installation process, such as setting a connection hole on the floor 100, and then connecting the water retaining member 700 to the floor 100 by screws, and in order to improve the waterproof effect of the water retaining member 700, it is also necessary to set a sealing structure between the water retaining member 700 and the floor 100. In the present embodiment, the water retaining member 700 and the floor 100 are cast as an integrated structure, without the need for a separate connection, and without the need for a sealing member, thereby making the setting of the water retaining member 700 simpler. In the present embodiment, the water retaining member 700 and the floor 100 are cast as an integrated structure, without the need for a separate connection, and without the need for a sealing member, thereby making the setting of the water retaining member 700 simpler.
[0060] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
Claims
1. The smoke exhaust pipe hole blocking structure is characterized by: include: A floor slab having a first surface and a second surface opposite to each other, and a hole connecting the first surface and the second surface, wherein the second surface is located above the first surface; A smoke exhaust pipe is passed through the hole; Fireproof cotton, arranged in the hole and surrounding the outer wall of the smoke exhaust pipe; The first shielding member has a first mounting hole, the first shielding member is connected to the first surface and covers the hole, the smoke exhaust pipe is passed through the first mounting hole, the bottom surface of the first shielding member is a first guide surface, and the vertical distance between the first guide surface and the first surface gradually decreases along the hole edge of the first mounting hole to the outer edge of the first shielding member.
2. The smoke exhaust pipe hole blocking structure according to claim 1, characterized in that: The smoke exhaust pipe hole blocking structure further includes a second shielding member, the second shielding member has a second mounting hole, the second shielding member is connected to the second surface and covers the hole, and the smoke exhaust pipe is passed through the second mounting hole; The top surface of the second shielding member is parallel to the second surface of the floor; or, The top surface of the second shielding member is a second flow-guiding surface, and the vertical distance between the second flow-guiding surface and the second surface gradually decreases along the hole edge of the second mounting hole to the outer edge of the second shielding member.
3. The smoke exhaust pipe hole blocking structure according to claim 2, characterized in that: There is a gap between the outer wall of the smoke exhaust pipe and the hole wall of the first mounting hole; and / or, There is a gap between the outer wall of the smoke exhaust pipe and the hole wall of the second mounting hole.
4. The smoke exhaust pipe hole blocking structure according to claim 1, characterized in that: The smoke exhaust pipe hole blocking structure also includes thermal insulation cotton, which is wound around the outer wall of the smoke exhaust pipe.
5. The smoke exhaust pipe hole blocking structure according to claim 4, characterized in that: The fireproof cotton and the heat-insulating cotton are both aluminum silicate cotton.
6. The smoke exhaust pipe hole blocking structure according to claim 2, characterized in that: The first shielding member includes a plurality of split first plates, and the plurality of first plates are connected to define and form the first mounting hole; and / or, The second shielding member further includes a plurality of split second plates, and the plurality of second plates are connected to define and form the second mounting hole.
7. The smoke exhaust pipe hole blocking structure according to claim 6, characterized in that: The first plate body is detachably connected to the floor slab; and / or, The second plate body is detachably connected to the floor slab.
8. The smoke exhaust pipe hole blocking structure according to claim 1, characterized in that: The angle between the first guide surface and the first surface ranges from 5° to 15°.
9. The smoke exhaust pipe hole blocking structure according to any one of claims 1 to 8, characterized in that: The smoke exhaust pipe hole blocking structure further includes a water retaining member, which is connected to the second surface and surrounds the outside of the hole.
10. The smoke exhaust pipe hole blocking structure according to claim 9, characterized in that: The floor slab is a concrete structure, and the water retaining member is cast with the floor slab to form an integrated structure.