CN115807470A - Pressure-difference-prevention fireproof floor drain core device and pressure-difference-prevention fireproof floor drain core device testing device - Google Patents
Pressure-difference-prevention fireproof floor drain core device and pressure-difference-prevention fireproof floor drain core device testing device Download PDFInfo
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- CN115807470A CN115807470A CN202211511238.1A CN202211511238A CN115807470A CN 115807470 A CN115807470 A CN 115807470A CN 202211511238 A CN202211511238 A CN 202211511238A CN 115807470 A CN115807470 A CN 115807470A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention discloses an anti-pressure-difference fireproof floor drain core device and an anti-pressure-difference fireproof floor drain core device testing device, wherein the anti-pressure-difference fireproof floor drain core device comprises a main body, a floating body and a sealing assembly; the main body comprises a base and a cavity arranged on the base, the base comprises a top wall, a first tubular part and a second tubular part, the first tubular part and the second tubular part protrude out of the upper end and the lower end of the top wall, the first tubular part and the second tubular part are coaxially arranged, and inner cavities of the first tubular part and the second tubular part are communicated; the floating body is arranged in the inner cavity of the cavity, and the bottom of the floating body is used for sealing the first tubular part; a seal assembly is coupled to the base for sealing the second tubular portion. The device can be directly installed at the installation position of the original fireproof floor drain, the field civil structure does not need to be changed, whether floor drain can be placed in a room with pressure difference or not is sucked or sprayed, the integrity of fireproof subareas can be realized, in addition, the function realization of solving multiple working conditions (without considering the positive and negative pressures of the room) by one floor drain scheme type can also be realized, the application range is wide, and the applicability is strong.
Description
Technical Field
The invention relates to the technical field of power plants, in particular to a pressure difference-preventing fireproof floor drain core device and a pressure difference-preventing fireproof floor drain core device testing device.
Background
As shown in fig. 1, most of the fire-proof floor drains for nuclear power plants currently adopt a conventional floor drain device 10. The floor drain device 10 can comprise a cavity and a pipeline 11 communicated with the cavity, the cavity of the cavity forms an accommodating space 12, and according to the isolation requirement of a fire-proof subarea, a fire-proof floor drain is added into the volume space 12 to form a water seal, so that the integrity of the fire-proof subarea is ensured. Due to the fact that large pressure difference exists between the interior of a room and a drainage pipe and the water seal height is limited, floor drain liquid in partial areas can be sucked away (the positive pressure of the room is strong) or sprayed out of the floor drain (the negative pressure of the room is strong), the floor drain liquid height can not meet design requirements and fire-proof partition management regulations, and fire resistance and odor prevention functions of the floor drain are affected. And meanwhile, the use amount of the floor drain is increased due to frequent addition of the floor drain, the later-stage investment cost is increased, and if a U-shaped water seal needs to be modified, the novel floor drain is various in related types, large in quantity, high in implementation difficulty and high in cost.
At present, the problem that a fire-proof partition is damaged under the condition that a room is under a large positive pressure and a large negative pressure can be solved by a fire-proof floor drain product.
Disclosure of Invention
The invention aims to solve the technical problem of providing an anti-pressure-difference fireproof floor drain core device and a testing device of the anti-pressure-difference fireproof floor drain core device.
The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a pressure difference-preventing fireproof floor drain core device, which comprises a main body, a floating body and a sealing assembly;
the main body comprises a base and a cavity arranged on the base, the base comprises a top wall, a first tubular part and a second tubular part, the first tubular part and the second tubular part protrude out of the upper end and the lower end of the top wall, the first tubular part and the second tubular part are coaxially arranged, and inner cavities of the first tubular part and the second tubular part are communicated;
the floating body is arranged in the inner cavity of the cavity, and the bottom of the floating body is used for sealing the first tubular part;
the seal assembly is coupled to the base for sealing the second tubular portion.
In some embodiments, the bottom of the float is a seal having a sealing surface that is curved.
In some embodiments, the bottom of the floating body is further provided with a ring-shaped portion, the inner diameter of the ring-shaped portion is larger than the outer diameter of the first tubular portion so as to be sleeved on the outer periphery of the first tubular portion, and the inner periphery of the ring-shaped portion and the outer periphery of the first tubular portion form a liquid seal space.
In some embodiments, the upper end inner peripheral edge of the first tubular portion is curved.
In some embodiments, the base further comprises a side wall extending downwardly from the top wall;
the sealing assembly comprises a sealing cover, and the sealing cover is rotatably arranged on the side wall to seal or conduct the second tubular part.
In some embodiments, the side wall has a gap, the first end of the sealing cover is rotatably mounted in the gap through a rotating shaft, and the first end of the sealing cover is provided with a weight block.
In some embodiments, the anti-pressure-difference fireproof floor drain core device further comprises a guide frame, the guide frame is arranged in the inner cavity of the cavity, and the floating body is movably arranged in the guide frame.
In some embodiments, the top wall is provided with a limiting groove for mounting the lower end of the guide frame.
In some embodiments, the anti-differential pressure fireproof floor drain core device further comprises a lap joint part arranged on the upper periphery of the cavity.
The invention also provides a testing device of the pressure difference-preventing fireproof floor drain core device, which is used for testing the pressure difference-preventing fireproof floor drain core device in any embodiment and comprises a bracket, an airflow component and a water flow component;
the bracket is used for mounting the pressure difference preventing fireproof floor drain core device, and the airflow component comprises a first air path, a second air path and a pressure stabilizing container;
the first air passage and the second air passage are both connected with the pressure stabilizing container, and the pressure stabilizing container is connected with the upper end of the bracket;
the first air path comprises a first air pump and an air inlet valve which are connected in sequence, one end of the air inlet valve is connected with the first air pump, the other end of the air inlet valve is connected with the pressure stabilizing container, the second air path comprises a second air pump and an air suction valve which are connected in sequence, one end of the air suction valve is connected with the first air pump, and the other end of the air suction valve is connected with the pressure stabilizing container; the pressure stabilizing container is provided with a first pressure difference meter and an exhaust port;
the water flow assembly comprises a water conveying pipeline connected with the upper end of the support and a water drainage pipeline connected with the lower end of the support.
The implementation of the invention has the following beneficial effects: the pressure difference-preventing fireproof floor drain core device can be directly installed at the installation position of an original fireproof floor drain, the site civil engineering structure is not required to be changed, whether floor drain can be placed in a room with pressure difference or not is sucked or sprayed, the integrity of a fireproof subarea can be realized, besides, the function realization of solving various working conditions (without considering the positive pressure and the negative pressure of the room) by one floor drain scheme type can be realized, the application range is wide, and the applicability is strong.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described with reference to the accompanying drawings and embodiments, it is to be understood that the following drawings only show some embodiments of the present invention and therefore should not be considered as limiting the scope, and that other relevant drawings can be obtained from these drawings by those skilled in the art without inventive effort. In the drawings:
fig. 1 is a schematic structural view of a related art floor drain core;
FIGS. 2-3 are schematic views of the construction of the pressure-drop-resistant fire-proof floor drain core apparatus in some embodiments of the present invention;
FIG. 4 is a cross-sectional view of a pressure differential preventing fire escape core assembly in accordance with certain embodiments of the present invention;
FIG. 5 is a schematic view of the construction of the pressure differential proof fire resistant floor drain core assembly with the cavity omitted in some embodiments of the present invention;
fig. 6-7 are schematic structural views of a base in some embodiments of the invention;
FIG. 8 is a schematic structural view of a float in some embodiments of the invention;
FIG. 9 is a schematic structural view of a seal assembly in some embodiments of the present invention;
FIG. 10 is an exploded view of the seal assembly of FIG. 9;
FIG. 11 is a schematic illustration of the construction of a guide frame in some embodiments of the invention;
figure 12 is a schematic diagram of a pressure differential protection fire escape core apparatus test apparatus in some embodiments of the invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.
It should also be noted that, unless expressly specified or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and encompass, for example, fixed connections as well as removable connections or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
Referring to fig. 2 to 11, the present invention shows a pressure-difference preventing fireproof floor drain core device 20, which includes a main body 21, a floating body 22, and a sealing member 23.
The main body 21 may include a base 211 and a cavity 212 installed on the base 211, the base 211 includes a top wall 2111, and a first tubular portion 2113 and a second tubular portion 2114 protruding from the top and bottom ends of the top wall 2111, the first tubular portion 2113 and the second tubular portion 2114 are coaxially disposed and have their inner cavities communicated;
the seal assembly 23 is coupled to the base 211 for sealing the second tubular portion 2114 and, under force, away from the second tubular portion 2114, allowing liquid to flow into the second tubular portion 2113 and downstream from the first tubular portion 2113.
Understandably, the pressure difference-preventing fireproof floor drain core device 20 can be directly installed at the installation position of the original fireproof floor drain, the field civil construction structure is not required to be changed, whether floor drain can be placed in a room with pressure difference or not is absorbed or sprayed, the integrity of fireproof subareas can be realized, in addition, the function realization of solving various working conditions (without considering the positive and negative pressures of the room) by one floor drain scheme type can be realized, the application range is wide, and the applicability is strong.
In some embodiments, the cavity 212 can be a circular tube structure having a length greater than the length of the float 22, such that the cavity 212 has a large enough interior cavity for the float 22 to move.
In some embodiments, the float 22 is generally a cylindrical structure, such as may include but is not limited to a cylindrical structure, which may be a solid cylindrical structure, or a hollow cylindrical structure, or the float 22 has an interior cavity that may be filled with a foam block or the like. Preferably, the floating body 22 may be made of a metal material, such as stainless steel or aluminum alloy.
The bottom of the float 22 is a seal part 221, and the seal part 221 has a seal surface which is a curved surface.
Preferably, the upper end inner peripheral edge of the first tubular portion 2113 is curved to facilitate engagement with the sealing portion 221.
In some embodiments, the bottom of the floating body 22 is further provided with a ring portion 222, the inner diameter of the ring portion 222 is larger than the outer diameter of the first tubular portion 2113 so as to be sleeved on the outer periphery of the first tubular portion 2113, and the inner periphery of the ring portion 222 and the outer periphery of the first tubular portion 2113 form a liquid-tight space a.
Referring to fig. 9 and 10, in some embodiments, the base 211 further includes a side wall 2112 extending downwardly from the top wall 2111, and the sealing assembly 23 includes a sealing cover 231, wherein the sealing cover 231 is rotatably mounted on the side wall 2112 to seal or communicate with the second tubular portion 2114.
Further, the sidewall 2112 has a notch, a first end of the sealing cover 231 is rotatably mounted at the notch through a rotating shaft 232, and a weight 233 is disposed at the first end of the sealing cover 231. Understandably, the sealing assembly 23 employs a lever structure to rotate the sealing cover 231 and make the sealing cover 231 in an initial state to seal the second tubular portion 2113. The shape and mass of the weight 233 can be selected according to actual requirements, and are not limited herein. Preferably, the sealing cover 231 may be made of a metal material such as aluminum or an aluminum alloy. The shaft 232 and the weight 233 may be made of a metal material such as stainless steel.
Referring to fig. 11, the anti-differential pressure fireproof floor drain core device 20 further includes a guide frame 24, the guide frame 24 is disposed in the inner cavity of the cavity 212, and the floating body 22 is movably installed in the guide frame 24. Preferably, the guide frame 24 is made of a stainless steel material, such as 304 stainless steel.
Preferably, the guide frame 24 may include a first ring 241 and a second ring 242 which are oppositely arranged, and a plurality of connecting bodies 243 which connect the first ring 241 and the second ring 242, and the outer circumference of the first ring 241 and/or the second ring 242 may be further provided with a protrusion 244 to abut against the inner side surface of the cavity 212 or be welded with the inner side surface of the cavity 212.
Preferably, the top wall 2111 is provided with a limiting groove B for the lower end of the guide frame 24 to be mounted. Preferably, the lower end of the guide frame 24 may be welded to the top wall 2111.
Further, the top wall 2111 may also be provided with a step at the upper periphery thereof for positioning and installation of the cavity 212. The step is positioned on the outer ring of the limit groove B.
Preferably, the main body 21 may be a unitary structure, i.e., the base 211 and the cavity 212 may be a unitary structure. Alternatively, the base 211 and the cavity 212 may be separate structures, and the two structures are fixed by a snap-fit manner or a screw-thread manner. Preferably, the body 21 is made of a stainless steel material, such as 304 stainless steel.
In some embodiments, the anti-pressure-difference fireproof floor drain core device 20 further comprises a lap joint part 25 disposed on the upper periphery of the cavity 212 to lap the upper periphery of the pipeline, the lap joint part 25 may be an integral structure with the cavity 212, or may be a separate structure, and the lap joint part 25 may be an integral ring structure, or may be several protruding structures disposed at intervals. Preferably, the bridge portion 25 is made of a stainless steel material, such as 304 stainless steel.
Understandably, the whole pressure difference preventing fireproof floor drain core device 20 can be directly hung on the upper edge of a drainage pipeline on the spot through the lapping part 25, and the pressure difference preventing fireproof floor drain core device 20 and the drainage pipeline form outer sealing by using a flame-retardant sealing gasket or a flame-retardant sealant.
Understandably, the pressure difference preventing fireproof floor drain core device 20 has three layers of sealing mechanisms, wherein the first layer is a water seal formed between the first tubular part 2113 and the annular part 222 from top to bottom, the second layer is a mechanical seal formed by the sealing part 221 and the first tubular part 2113 depending on the gravity of the floating body 22, and the third layer is a mechanical seal formed by the sealing cover 231 and the second annular part 2114 through the lever principle of the balancing weight 233.
In the present embodiment, the working process of the pressure-difference-preventing fireproof floor drain core device 20 is as follows:
according to the characteristics of the field environment, the method can be divided into 3 types: the pressure difference between the upstream and the downstream of the pressure difference prevention fireproof floor drain core device 20 is not generated, (2) the upstream pressure of the pressure difference prevention fireproof floor drain core device 20 is larger than the downstream pressure, namely, the room is in a positive pressure environment, and (3) the upstream pressure of the pressure difference prevention fireproof floor drain core device 20 is smaller than the downstream pressure, namely, the room is in a negative pressure environment.
(1) There is no pressure difference upstream and downstream of the floor drain, i.e. the upstream pressure is approximately equal to the downstream pressure:
under normal conditions, a certain amount of residual water exists in the cavity 212 to form water seal, but due to the action of gravity, the floating body 22 is positioned at the bottommost part of the cavity 212, and at the moment, the bottom of the floating body 22 seals the first tubular part 2113 to realize the upstream sealing of the floor drain; the sealing cover 231 is located at the topmost part under the action of gravity of the balancing weight 233 through the lever, at the moment, the sealing cover 231 seals the second tubular part 2114, downstream sealing of the floor drain is achieved, and water sealing and double mechanical sealing can be achieved under the condition that no water flows in the normal upstream.
Under the circumstances that the upper reaches came water, the elevation of cavity 11 internal water constantly rises, produce buoyancy to floating body 22, when buoyancy can overcome floating body 22 weight, floating body 22 promoted, the bottom that drives floating body 22 is kept away from first tubular portion 2113, first tubular portion 2113 is in the open mode this moment, upstream water can circulate to sealed lid 231 through first tubular portion 2113, because the action of gravity of water, can trigger sealed lid 231 and open, can normally drain this moment, after the water drainage, floating body 22 and sealed lid 231 get back to the closed condition under the normal condition.
(2) The upstream pressure of the floor drain is greater than the downstream pressure
Normally, the floating body 22 is subjected to gravity + positive pressure of the room, and the first tubular portion 2113 is in the closed state. The sealing cover 231 is in a closed state due to the weight of the weight block 233 of the differential pressure preventing fire leakage core device 20.
Under the condition of upstream water supply, when the buoyancy of the floating body 22 by water is greater than the gravity and the positive pressure generated by a room, the floating body 22 is lifted to drive the bottom of the floating body 22 to be away from the first tubular part 2113, at the moment, the first tubular part 2113 is in an open state, the upstream water can flow to the sealing cover 231 through the first tubular part 2113, due to the gravity action of the water, the sealing cover 231 is triggered to open, normal water drainage can be realized at the moment, and after the water is drained, the floating body 22 and the sealing cover 231 return to a closed state under the normal condition.
(3) The upstream pressure of the floor drain is less than the downstream pressure
Normally, the sealing cover 231 is subjected to gravity + positive pressure downstream the floor drain, and the sealing cover 231 and the second tubular portion 2114 are in a closed state. First tubular portion 2113 is in a closed state due to floating body 22 and the weight of floating body 22 itself.
When the buoyancy of the floating body 22 by water is larger than the gravity of the floating body 22, the first tubular part 2113 is triggered to open, when the gravity of the sealing cover 231 by water is larger than the force transmitted to the sealing cover 231 by the counterweight 233 plus the negative pressure generated at the downstream of the floor drain, the sealing cover 231 is opened to drain water, and the water returns to the normal state after draining.
Understandably, in the prior art, the nuclear power fireproof floor drain adopts a method of adding fireproof floor drain to form water seal to realize fireproof subareas, and as a large pressure difference exists between the interior of a room and a drain pipe and the water seal height is limited, the problem that the floor drain liquid in partial areas is sucked away (the positive pressure of the room is strong) or is sprayed out of the floor drain (the negative pressure of the room is strong) can be caused, and the fireproof subareas are damaged.
The pressure difference-preventing fireproof floor drain core device 20 can prevent the floor drain from being frequently sprayed or sucked away, can realize the normal floor drain drainage function of a room, and can ensure the integrity of a fireproof subarea without frequently supplementing the floor drain. The special fireproof floor drain cost is reduced, the labor cost for continuously supplementing the fireproof floor drain is reduced, the reconstruction cost and the risk are reduced, and the risk that the fireproof subareas cannot meet the standard due to the loss of the fireproof floor drain is avoided.
Understandably, the pressure-difference-preventing fireproof floor drain core device 20 has the following advantages: simple structure, few parts and convenient maintenance.
The device can realize the functions of preventing reverse odor and normal drainage of the conventional floor drain, can also realize the functions of fire prevention and flame retardance, and can realize mechanical water-adding seal sealing under different pressure difference environments.
The whole body is made of metal, has stable structure and can play roles in fire prevention and fire insulation.
The size of the floating body 22, the outer diameter of the cavity 212 and the weight of the balancing weight 233 can be adjusted according to actual field environment, the replacement is convenient, and the device can adapt to rooms with different pressure differences and different pipe diameters of floor drains.
The single set of device can simultaneously realize the basic function of the fireproof floor drain in a ventilated room in a positive pressure difference or negative pressure difference environment, and can adapt to occasions with constantly changing field environments.
The step type suspension installation can be carried out by adopting the lapping part 25, and the field installation and the disassembly are convenient.
The device is specially applied to the fireproof floor drain with the fireproof partition requirement in a nuclear power ventilation room, and can also be used in occasions with the requirements of odor prevention, fire prevention or normal drainage under the condition that the room has a pressure difference.
Referring to fig. 12, the present invention further discloses a testing apparatus 30 for testing the anti-pressure-difference fireproof floor drain core apparatus 20, which comprises a support 31, an airflow assembly and a water flow assembly;
the bracket 31 is used for installing the pressure-difference-preventing fireproof floor drain core device 20, and the airflow component comprises a first air path 32, a second air path 33 and a pressure-stabilizing container 34.
The first air passage 32 and the second air passage 33 are both connected with a pressure stabilizing container 34, and the pressure stabilizing container 34 is connected with the upper end of the bracket 31;
the first air passage 32 includes a first air pump 321 and an air inlet valve 322 connected in sequence, and one end of the air inlet valve 322 is connected to the first air pump 321 and the other end is connected to the surge tank 34. The first air pump 321 may be an air pump to pressurize the surge tank 34 so that the upstream pressure of the bracket 31 is increased.
The second air path 33 comprises a second air pump 331 and an air suction valve 332 which are connected in sequence, wherein one end of the air suction valve 332 is connected with the first air pump 321, and the other end is connected with the pressure stabilizing container 34; the second air pump 331 may be an air pump to pump the pressure stabilizing vessel 34 such that the pressure upstream of the bracket 31 is reduced.
The pressure stabilizing container 34 is provided with a first pressure difference meter 341 and an air outlet 342; preferably, a second pressure difference meter 323 is further disposed at an end of the first air path 32 close to the surge tank 34.
The water current assembly includes a water delivery pipe 35 connected to the upper end of the bracket 31 and a water discharge pipe 36 connected to the lower end of the bracket 31.
The water pipe 35 may include a water pipe 351, one end of the water pipe 351 is connected to the upper end of the bracket 31, the other end of the water pipe 351 is connected to a water source, and a water inlet valve 352 is disposed on the water pipe 351.
The drain line 36 may include a drain pipe 361, one end of the drain pipe 361 is connected to the lower end of the bracket 31, the other end of the drain pipe 361 is connected to the water collecting tank, and a drain valve 362 is disposed on the drain pipe 361.
The testing device 30 can simulate the working condition of the upper periphery of the anti-pressure-difference fireproof floor drain core device 20, and verify whether the anti-pressure-difference fireproof floor drain core device 20 meets the requirement or not in an off-line manner.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. The pressure difference preventing fireproof floor drain core device is characterized by comprising a main body (21), a floating body (22) and a sealing assembly (23);
the main body (21) comprises a base (211) and a cavity (212) arranged on the base (211), the base (211) comprises a top wall (2111), a first tubular part (2113) and a second tubular part (2114) protruding out of the upper end and the lower end of the top wall (2111), and the first tubular part (2113) and the second tubular part (2114) are coaxially arranged and communicated with each other through inner cavities;
the floating body (22) is arranged in the inner cavity of the cavity (212), and the bottom of the floating body (22) is used for sealing the first tubular part (2113);
the sealing assembly (23) is connected to the base (211) for sealing the second tubular portion (2114).
2. Pressure-drop proof fire-proof floor drain core device according to claim 1, characterized in that the bottom of the floating body (22) is a sealing part (221), the sealing part (221) having a sealing surface, the sealing surface being a curved surface.
3. The pressure-difference preventing and fire-preventing floor drain core device according to claim 1, wherein a ring portion (222) is further provided at the bottom of the floating body (22), the inner diameter of the ring portion (222) is larger than the outer diameter of the first tubular portion (2113) so as to be sleeved on the outer periphery of the first tubular portion (2113), and the inner periphery of the ring portion (222) and the outer periphery of the first tubular portion (2113) form a liquid-tight space (a).
4. The differential pressure fire-proof floor drain core device according to claim 1, wherein the upper end inner peripheral edge of the first tubular portion (2113) is curved.
5. The pressure differential fire protection floor drain core arrangement according to claim 1, wherein the base (211) further comprises a side wall (2112) extending downwardly from the top wall (2111);
the sealing assembly (23) comprises a sealing cover (231), and the sealing cover (231) is rotatably arranged on the side wall (2112) to seal or conduct the second tubular part (2114).
6. The pressure differential fire prevention floor drain core arrangement according to claim 5, wherein the side wall (2112) has a gap, the first end of the sealing cover (231) is rotatably mounted in the gap by a rotating shaft (232), and the first end of the sealing cover (231) is provided with a weight block (233).
7. The differential pressure protection fire leakage core device according to any of claims 1 to 6, further comprising a guide frame (24), wherein the guide frame (24) is arranged in the inner cavity of the cavity (212), and the floating body (22) is movably mounted in the guide frame (24).
8. The differential pressure preventing and fire preventing floor drain core device according to claim 7, wherein the top wall (2111) is provided with a limiting groove (B) for mounting the lower end of the guide frame (24).
9. The differential pressure protection fire leakage core arrangement according to any of claims 1 to 6, further comprising a lap joint (25) provided at an upper peripheral edge of said cavity (212).
10. A testing device for a pressure-difference preventing fire-proof floor drain core device, which is used for testing the pressure-difference preventing fire-proof floor drain core device according to any one of claims 1 to 9, and is characterized by comprising a bracket (31), an air flow component and a water flow component;
the bracket (31) is used for installing the pressure difference preventing fireproof floor drain core device, and the airflow assembly comprises a first air path (32), a second air path (33) and a pressure stabilizing container (34);
the first air passage (32) and the second air passage (33) are both connected with the pressure stabilizing container (34), and the pressure stabilizing container (34) is connected with the upper end of the bracket (31);
the first air path (32) comprises a first air pump (321) and an air inlet valve (322) which are connected in sequence, one end of the air inlet valve (322) is connected with the first air pump (321), the other end of the air inlet valve is connected with the pressure stabilizing container (34), the second air path (33) comprises a second air pump (331) and an air suction valve (332) which are connected in sequence, one end of the air suction valve (332) is connected with the first air pump (321), and the other end of the air suction valve (332) is connected with the pressure stabilizing container (34); the pressure stabilizing container (34) is provided with a first pressure difference meter (341) and an air outlet (342);
the water flow assembly comprises a water conveying pipeline (35) connected with the upper end of the support (31) and a drainage pipeline (36) connected with the lower end of the support (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211511238.1A CN115807470A (en) | 2022-11-29 | 2022-11-29 | Pressure-difference-prevention fireproof floor drain core device and pressure-difference-prevention fireproof floor drain core device testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211511238.1A CN115807470A (en) | 2022-11-29 | 2022-11-29 | Pressure-difference-prevention fireproof floor drain core device and pressure-difference-prevention fireproof floor drain core device testing device |
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| Publication Number | Publication Date |
|---|---|
| CN115807470A true CN115807470A (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211511238.1A Pending CN115807470A (en) | 2022-11-29 | 2022-11-29 | Pressure-difference-prevention fireproof floor drain core device and pressure-difference-prevention fireproof floor drain core device testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115807470A (en) |
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2022
- 2022-11-29 CN CN202211511238.1A patent/CN115807470A/en active Pending
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