CN211486805U

CN211486805U - Pit filter for nuclear power station

Info

Publication number: CN211486805U
Application number: CN201922111393.4U
Authority: CN
Inventors: 王文梅; 张振刚
Original assignee: Xinxiang Lixia Filtration Technology Co ltd
Current assignee: Xinxiang Lixia Filtration Technology Co ltd
Priority date: 2019-11-30
Filing date: 2019-11-30
Publication date: 2020-09-15
Anticipated expiration: 2029-11-30

Abstract

The utility model discloses a pit filter for nuclear power station, including filtering the module, filter the module and include the runner, filter screen and stabilizer blade, the runner below is located to the stabilizer blade, be equipped with a plurality of fixed orificess one on the stabilizer blade, the stabilizer blade passes fixed orifices one through set screw and links to each other with ground, be equipped with the passageway that converges on the runner, be equipped with fixed orifices two on the runner lateral wall, the runner passes two end to end links of fixed orifices through set screw, the roof is equipped with rivers entry and fixed orifices three on the runner, rivers entry periphery is located to fixed orifices three, be equipped with the filter screen on the rivers entry, filter the filter screen and locate on the runner through fixed orifices three and correspond and locate on the rivers entry. The utility model belongs to the technical field of the nuclear power station fluid filters, specifically indicate a simple structure, area is little, multistage high-efficient filtration disintegrating slag, and can concentrate the nuclear power station pit filter of being convenient for to handle with the disintegrating slag.

Description

Pit filter for nuclear power station

Technical Field

The utility model belongs to the technical field of the nuclear power station fluid filters, specifically indicate a pit filter for nuclear power station.

Background

In a pressurized water reactor nuclear power station, when a loss of coolant accident (LOCA) or a main steam pipeline rupture accident occurs, high-temperature and high-pressure media at a breach can be sprayed, and thermal insulation materials, paint, concrete and the like nearby the breach can be impacted into slag, the slag can flow into a pit of a containment along with the media sprayed by the breach and spray water, water accumulated in the containment pit is a long-term water source for a safety vessel water injection system (safety injection system for short) and a safety vessel spraying system (safety injection system for short) to perform a safety function, and if the water source contains a large amount of slag, adverse effects can be brought when the safety injection system and the safety injection system perform the safety function. The pit filter can filter water to be flowed into the pit, then the filtered water can be fed into the safety spraying and safety injection system to implement the functions of spraying and cooling.

Due to the limitation of the space in the nuclear power station, the filters need to be reasonably arranged in the limited space, the stable placement of the filters is ensured, and the effective multistage filtration is realized while the crushed slag is concentrated and is convenient to treat.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a simple structure, area is little, multistage high-efficient filtration disintegrating slag, and can concentrate the pit filter for nuclear power station of being convenient for to handle with the disintegrating slag.

In order to realize the above functions, the utility model discloses the technical scheme who takes as follows: the utility model provides a nuclear power station is with hole filter, is including filtering the module, it includes the runner, filters filter screen and stabilizer blade to filter the module, the runner below is located to the stabilizer blade, be equipped with a plurality of fixed orificess one on the stabilizer blade, the stabilizer blade passes fixed orifices one through set screw and links to each other with ground, can select the fixed orifices one that corresponds according to stabilizer blade and ground contact condition, be equipped with the passageway that converges on the runner, rivers after the process is strained circulate through the passageway that converges, be equipped with fixed orifices two on the runner lateral wall, the runner passes two end to end of fixed orifices through set screw, forms the intercommunication passageway, the roof is equipped with rivers entry and fixed orifices three on the runner, rivers entry periphery is located to fixed orifices three, be equipped with the filter screen on the rivers entry, filter screen locates on the runner through fixed orifices three and correspond and locate.

Further, it includes outer filtration filter screen and inlayer filtration filter screen to filter the filter screen, inlayer filtration filter screen nestification is in outer filtration filter screen, inlayer filtration filter screen mesh diameter is less than outer filtration filter screen diameter, and inlayer filtration filter screen and outer filtration filter screen filter the not disintegrating slag of equidimension respectively, are convenient for collect the not disintegrating slag of equidimension.

Further, the rivers entry is the triangle-shaped structure setting, it is the triangular prism structure setting to filter the filter screen, filter the filter screen and set up with rivers entry one-to-one, filter screen cross section size, shape and rivers entry unanimity.

Furthermore, a plurality of groups are uniformly arranged on the upper top wall of the water flow inlet along the flow channel, and two adjacent groups of top angles of the triangular structures of the water flow inlets are arranged in a staggered mode in opposite directions so as to ensure that the water flow inlets and the corresponding filter screens are arranged on the same channel area as much as possible, and therefore the number of the filter screens in unit area is increased.

Further, the diameter of the mesh of the water flow inlet filter screen is equal to that of the mesh of the inner layer filter screen.

Furthermore, the filtering modules are connected end to form a plurality of groups, and the corresponding number of the filtering modules is selected according to the requirement of the pit.

The utility model adopts the above structure to gain beneficial effect as follows: the utility model provides a pair of pit filter for nuclear power station, through the filter screen of apex angle dislocation set in opposite directions, the rivers entry that cooperates special triangle-shaped structure to set up simultaneously and rather than the filter screen of the triangular prism structure that corresponds has increased the number of filter screen on the unit area, has reduced effective area's waste, adopts double-deck filter screen to realize the categorised concentrated filtration of multistage filterable technological effect and different granule disintegrating slag.

Drawings

FIG. 1 is an overall structure diagram of a pit filter module for a nuclear power plant according to the present invention;

FIG. 2 is a schematic structural view of a flow passage of a pit filter for a nuclear power plant according to the present invention;

fig. 3 is the utility model relates to a nuclear power station is with earth hole filter screen's schematic structure.

The filter comprises a flow channel 1, a flow channel 2, a filter screen 3, support legs 4, fixing holes I and 5, a confluence channel 6, fixing holes II and 7, a water flow inlet 8, fixing holes III and 9, a filter screen 10, an outer layer filter screen 11 and an inner layer filter screen.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the following embodiments, and the technical features or the connection relations of the present invention, which are not described in detail, are the prior art adopted.

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figures 1-3, the utility model relates to a pit filter for nuclear power station, which comprises a filtering module, the filtering module comprises a flow passage 1, a filtering screen 2 and a support leg 3, the support leg 3 is arranged below the flow passage 1, a plurality of groups of fixing holes I4 are arranged on the support leg 3, the support leg 3 passes through the fixing holes I4 by a fixing screw to be connected with the ground, the corresponding fixing holes I4 can be selected according to the contact condition of the support leg 3 and the ground, a confluence channel 5 is arranged on the flow passage 1, the filtered water flows through the confluence channel 5, a fixing hole II 6 is arranged on the side wall of the flow passage 1, the flow passage 1 passes through the fixing hole II 6 by a fixing screw to be connected end to form a communication channel, a water flow inlet 7 and a fixing hole III 8 are arranged on the top wall of the flow passage 1, the fixing hole III 8 is arranged at the periphery of, the filter screen 2 is arranged on the flow channel 1 through the three fixing holes 8 and is correspondingly arranged on the water inlet 7.

Wherein, filter screen 2 includes outer filter screen 10 and inlayer filter screen 11, inlayer filter screen 11 nestification is in

outer filter screen

10, 11 mesh diameters of inlayer filter screen are less than outer filter screen 10 diameter, and inlayer filter screen 11 and outer filter screen 10 filter the disintegrating slag of equidimension not respectively, are convenient for collect the disintegrating slag of equidimension not. Rivers entry 7 is the triangle-shaped structure setting, filter screen 2 is the triangular prism structure setting, filter screen 2 sets up with rivers entry 7 one-to-one, 2 cross section sizes of filter screen, shape and rivers entry 7 are unanimous. Rivers entry 7 evenly is equipped with a plurality of groups, adjacent two sets of along the top wall on the runner 1 the apex angle of the triangle-shaped structure of rivers entry 7 sets up dislocation in opposite directions to guarantee that can be as many as possible on same area of passage set up rivers entry 7 and correspond the filter screen 2 that sets up, thereby increase the filter screen 2 number on the unit area. The diameter of the meshes of the filter screen 9 of the water inlet 7 is equal to that of the meshes of the inner-layer filter screen 11. The filtering modules are connected end to form a plurality of groups, and the filtering modules select corresponding numbers according to pit requirements.

When the combined flow passage is used specifically, the flow passage 1 is connected end to end through the second fixing hole 6 by the aid of the fixing screws to form a communicated passage, the first fixing hole 4 is penetrated through the fixing screws to be connected with the ground, water flow with crushed slag sequentially passes through the outer-layer filtering filter screen 10 and the inner-layer filtering filter screen 11 to filter the crushed slag with different sizes, and the water flow enters the combined flow passage 5 through the water flow inlet 7 to achieve a filtering effect.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a pit filter for nuclear power station, includes filtering module, its characterized in that: the utility model discloses a filter module, including the runner, filter screen and stabilizer blade, the runner below is located to the stabilizer blade, be equipped with a plurality of fixed orifices of group one on the stabilizer blade, the stabilizer blade passes fixed orifices one through set screw and links to each other with ground, be equipped with the passageway that converges on the runner, be equipped with fixed orifices two on the runner lateral wall, the runner passes two end to end of fixed orifices through set screw, the roof is equipped with rivers entry and fixed orifices three on the runner, rivers entry periphery is located to fixed orifices three, be equipped with the filter screen on the rivers entry, filter screen locates on the runner and correspond through fixed orifices three and locate on the rivers entry.

2. The pit filter for nuclear power plant according to claim 1, wherein: the filter screen includes outer filter screen and inlayer filter screen, inlayer filter screen nestification is in outer filter screen, inlayer filter screen mesh diameter is less than outer filter screen diameter.

3. The pit filter for nuclear power plant according to claim 2, wherein: the rivers entry is the triangle-shaped structure setting, it is the triangular prism structure setting to filter the filter screen, filter the filter screen and set up with rivers entry one-to-one, it is unanimous with rivers entry to filter screen cross section size, shape.

4. The pit filter for nuclear power plant according to claim 3, wherein: the top wall of the water flow inlet along the flow channel is uniformly provided with a plurality of groups, and the vertex angles of the triangular structures of the adjacent two groups of water flow inlets are oppositely staggered.

5. The pit filter for nuclear power plant according to claim 4, wherein: the diameter of the meshes of the water flow inlet filter screen is equal to that of the meshes of the inner layer filter screen.

6. The pit filter for nuclear power plant according to claim 1, wherein: the filtering modules are connected end to end and provided with a plurality of groups.