CN218991914U

CN218991914U - Nuclear level fan antidetonation formula vibration isolation structure

Info

Publication number: CN218991914U
Application number: CN202222221659.2U
Authority: CN
Inventors: 阳松
Original assignee: Ma'anshan Chenyuda Fan Industry Co ltd
Current assignee: Ma'anshan Chenyuda Fan Industry Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-05-09
Anticipated expiration: 2032-08-23

Abstract

The utility model provides a nuclear-grade fan anti-vibration type vibration isolation structure which comprises a base, a nuclear-grade fan body and a pair of installation frames, wherein the pair of installation frames are respectively and fixedly installed on two sides of the top end of the base, four sides inside the installation frames are respectively and fixedly provided with a first damping spring shock absorber, one end of each first damping spring shock absorber is provided with a connecting plate, the four groups of first damping spring shock absorbers are connected with the nuclear-grade fan body through the connecting plates, one opposite side of each pair of installation frames is provided with a pair of sliding grooves, movable rods are respectively connected between the pair of installation frames through the pair of sliding grooves, an installation seat is arranged between the pair of movable rods, and the center position of the top end of the installation seat is fixedly provided with a second damping spring shock absorber. The nuclear-grade fan anti-vibration type vibration isolation structure is simple and reasonable in structure, novel in design, simple to operate, high in practicality and convenient to widely popularize and use.

Description

Nuclear level fan antidetonation formula vibration isolation structure

Technical Field

The utility model relates to the technical field of nuclear electric fans and ventilation system engineering, in particular to a nuclear-grade fan anti-seismic vibration isolation structure.

Background

The nuclear-grade fan is mainly applied to a nuclear safety-related ventilation system of a nuclear power station. The nuclear fans have anti-seismic requirements, namely, the nuclear fans can still reliably operate during a Safe Shutdown Earthquake (SSE), an operation reference earthquake (OBE) and after the earthquake. Therefore, the vibration isolation structure of the nuclear-grade fan bears the load of the nuclear-grade fan, and also bears two horizontal orthogonal seismic loads and vertical seismic loads. The vibration isolator is arranged at the bottom of the fan, the adopted vibration isolator mainly bears vertical load, the horizontal load which can be borne is small, under the earthquake condition, the deformation of the fan in two horizontal orthogonal directions can exceed the design allowable range, and the earthquake-proof requirement of the nuclear-grade fan can not be met.

The patent application number is CN201220583121.X discloses a nuclear-grade fan anti-vibration type vibration isolation structure, which comprises a plurality of upper-row vibration isolators and a plurality of lower-row vibration isolators which are arranged on the outer wall of the nuclear-grade fan; all the upper vibration isolators are arranged at equal intervals and are circumferentially arranged along the outer wall of the nuclear-grade fan, and all the upper vibration isolators are positioned above the center of gravity of the nuclear-grade fan; all lower row vibration isolators are arranged at equal intervals and circumferentially along the outer wall of the nuclear-grade fan, and all lower row vibration isolators are positioned below the gravity center of the nuclear-grade fan. The utility model can bear vertical load and horizontal load in two orthogonal directions, thereby meeting the anti-seismic requirement of the nuclear-grade fan. However, the above technical scheme only provides anti-demand for the nuclear-grade fan through the upper and lower vibration isolators, the shock resistance is limited, and the installation of the nuclear-grade fan and the vibration isolators is complicated, so that the maintenance and replacement of the fan are inconvenient.

Therefore, the nuclear-grade fan vibration-resistant vibration isolation structure is improved.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model relates to a nuclear-grade fan vibration-resistant vibration isolation structure which comprises a base, a nuclear-grade fan body and a pair of mounting frames, wherein the mounting frames are respectively and fixedly mounted on two sides of the top end of the base, four sides inside the mounting frames are respectively and fixedly provided with a first damping spring shock absorber, one end of each first damping spring shock absorber is provided with a connecting plate, four groups of first damping spring shock absorbers are connected with the nuclear-grade fan body through the connecting plates, one pair of opposite sides of each mounting frame are respectively provided with a pair of sliding grooves, movable rods are respectively connected between the mounting frames through the pair of sliding grooves, a mounting seat is arranged between the pair of movable rods, the center position of the top end of each mounting seat is fixedly provided with a second damping spring shock absorber, the top end of each second damping spring shock absorber is fixedly connected with an arc-shaped bracket, and the arc-shaped ends of the arc-shaped brackets are mutually clamped with the bottom end of the nuclear-grade fan body.

As a preferable technical scheme of the utility model, mounting plates are arranged on four sides of the outer wall of the nuclear-grade fan body, mounting bolts are arranged on one side of the mounting plates, and the mounting plates are fixedly connected with the connecting plates through the mounting bolts.

As a preferable technical scheme of the utility model, the two sides of the movable rod are provided with the sliding blocks which are in sliding connection with the sliding grooves.

As a preferable technical scheme of the utility model, one side of the sliding block is provided with a threaded hole, one side of the installation frame far away from the sliding groove is provided with a connecting screw rod, and one end of the connecting screw rod penetrates one side of the installation frame and is meshed with the threaded hole.

As a preferable technical scheme of the utility model, a handle is arranged on one side of the movable rod, and the surface of the handle is provided with anti-skid textures.

As a preferable technical scheme of the utility model, four corners of the base are provided with mounting holes, and fixing bolts are arranged in the mounting holes.

The beneficial effects of the utility model are as follows:

this kind of nuclear level fan antidetonation type vibration isolation structure, through the setting of the inboard four first damping spring shock absorbers of group of installing frame and connecting plate, not only be convenient for install fast and dismantle the nuclear level fan body through the mounting bolt, still satisfied the antidetonation demand of the vertical and horizontal direction of nuclear level fan body, cooperation through movable rod, mounting panel, second damping spring shock absorber and arc bracket is used simultaneously, is convenient for provide support and shock attenuation for the mid portion of nuclear level fan body, has improved nuclear level fan body's shock resistance greatly.

Drawings

The foregoing and other objects, features and advantages of the disclosure will be apparent from the following more particular descriptions of exemplary embodiments of the disclosure as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout exemplary embodiments of the disclosure.

FIG. 1 is a schematic perspective view of a nuclear-grade fan vibration isolation structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure A of FIG. 1 showing an anti-vibration isolation structure of a nuclear-grade fan according to the present utility model;

FIG. 3 is an enlarged schematic view of the B structure of FIG. 1 showing an anti-vibration isolation structure of a nuclear-grade fan according to the present utility model;

fig. 4 is a front plan sectional view of a part of the structure of an anti-vibration type vibration isolation structure of a nuclear-grade fan.

In the figure: 1. a base; 101. a fixing bolt; 2. a nuclear grade fan body; 201. a mounting plate; 202. installing a bolt; 3. a mounting frame; 301. a chute; 302. a connecting screw; 4. a first damping spring shock absorber; 401. a connecting plate; 5. a movable rod; 501. a slide block; 502. a threaded hole; 503. a mounting base; 504. a second damping spring shock absorber; 505. an arc bracket.

Detailed Description

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Examples: as shown in fig. 1-4, the anti-vibration isolation structure of a nuclear-grade fan comprises a base 1, a nuclear-grade fan body 2 and a pair of installation frames 3, wherein the pair of installation frames 3 are respectively and fixedly installed on two sides of the top end of the base 1, four sides inside the installation frames 3 are fixedly provided with first damping spring shock absorbers 4, one ends of the first damping spring shock absorbers 4 are provided with connecting plates 401, four groups of first damping spring shock absorbers 4 are connected with the nuclear-grade fan body 2 through the connecting plates 401, one opposite sides of the pair of installation frames 3 are provided with a pair of sliding grooves 301, movable rods 5 are respectively connected between the pair of installation frames 3 through the pair of sliding grooves 301, an installation seat 503 is arranged between the pair of movable rods 5, the center position of the top end of the installation seat 503 is fixedly provided with a second damping spring shock absorber 504, the top end of the second damping spring shock absorber 504 is fixedly connected with an arc bracket 505, and the arc end of the arc bracket 505 is mutually clamped with the bottom end of the nuclear-grade fan body 2.

Wherein, four sides of nuclear level fan body 2 outer wall all are equipped with mounting panel 201, and one side of mounting panel 201 is equipped with mounting bolt 202, and mounting panel 201 passes through mounting bolt 202 and connecting plate 401 fixed connection, through the setting of mounting bolt 202, is convenient for realize the quick connect and the dismantlement of mounting panel 201 and connecting plate 401.

Wherein, both sides of the movable rod 5 are provided with a sliding block 501, and the sliding block 501 is slidably connected with the sliding groove 301, and the movable rod 5 can move up and down conveniently through the cooperation of the sliding block 501 and the sliding groove 301.

Wherein, screw hole 502 has been seted up to one side of slider 501, and mounting frame 3 is equipped with connecting screw 302 in the one side of keeping away from spout 301, and one end of connecting screw 302 runs through one side of mounting frame 3 to interlock each other with screw hole 502, through the cooperation use of connecting screw 302 and screw hole 502, be convenient for realize movable rod 5's fixed.

Wherein, the handle is installed to one side of movable rod 5, and the handle surface is equipped with anti-skidding texture, through the setting of handle, the personnel of being convenient for control the removal of movable rod 5.

Wherein, the four corners of base 1 all are equipped with the mounting hole, and are equipped with fixing bolt 101 in the mounting hole.

Working principle: when the nuclear-grade fan vibration-resistant vibration isolation structure is used, the base 1 is fixed at the installation position through the fixing bolts 101, the nuclear-grade fan body 2 passes through the middle of the pair of installation frames 3, four groups of installation plates 201 on the outer side of the nuclear-grade fan body 2 are respectively attached to the connection plates 401 at one ends of the four groups of first damping spring shock absorbers 4, the installation plates 201 and the connection plates 401 are fixedly connected through the installation bolts 202, rapid installation and disassembly of the nuclear-grade fan body 2 are facilitated, the vibration-resistant requirements of the nuclear-grade fan body 2 in the vertical direction and the horizontal direction are met, the movable rod 5 is pulled through the handle, the sliding block 501 moves upwards in the sliding groove 301 until the arc-shaped bracket 505 of the second damping spring shock absorber 504 is clamped with the bottom end of the nuclear-grade fan body 2, the movable rod 5 is fixed through the engagement of the connecting screws 302 with the threaded holes 502, support and shock absorption are conveniently provided for the middle part of the nuclear-grade fan body 2, and the vibration resistance of the nuclear-grade fan body 2 is greatly improved.

In order to facilitate understanding of the solution and the effects of the embodiments of the present utility model, a specific application example is given below. It will be understood by those of ordinary skill in the art that the examples are for ease of understanding only and that any particular details thereof are not intended to limit the present utility model in any way.

It will be appreciated by persons skilled in the art that the above description of embodiments of the utility model has been given for the purpose of illustrating the benefits of embodiments of the utility model only and is not intended to limit embodiments of the utility model to any examples given.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.

Claims

1. The utility model provides a nuclear level fan antidetonation type vibration isolation structure, includes base (1), nuclear level fan body (2) and a pair of installing frame (3), a pair of installing frame (3) respectively fixed mounting is in the both sides on base (1) top, the equal fixed mounting in four sides of installing frame (3) inside has first damping spring bumper shock absorber (4), the one end of first damping spring bumper shock absorber (4) is equipped with connecting plate (401), and four sets of first damping spring bumper shock absorber (4) all are connected with nuclear level fan body (2) through connecting plate (401), a pair of opposite one side of installing frame (3) all is equipped with a pair of spout (301), and a pair of be connected with movable rod (5) through a pair of spout (301) respectively between installing frame (3), a pair of be equipped with mount pad (503) between movable rod (5), the central point in mount pad (503) top puts fixed mounting and has second damping spring bumper shock absorber (504), the top fixedly connected with nuclear level fan body (505) and arc-shaped carrier (505) bottom that the arc-shaped carrier (505) closes each other.

2. The nuclear grade fan anti-vibration type vibration isolation structure of claim 1, wherein: four sides of the outer wall of the nuclear-grade fan body (2) are respectively provided with a mounting plate (201), one side of each mounting plate (201) is provided with a mounting bolt (202), and each mounting plate (201) is fixedly connected with the corresponding connecting plate (401) through the corresponding mounting bolt (202).

3. The nuclear grade fan anti-vibration type vibration isolation structure of claim 1, wherein: both sides of the movable rod (5) are provided with sliding blocks (501), and the sliding blocks (501) are in sliding connection with the sliding grooves (301).

4. The nuclear level fan vibration-resistant vibration isolation structure of claim 3, wherein: screw holes (502) are formed in one side of the sliding block (501), a connecting screw rod (302) is arranged on one side, far away from the sliding groove (301), of the mounting frame (3), and one end of the connecting screw rod (302) penetrates through one side of the mounting frame (3) and is meshed with the screw holes (502).

5. The nuclear grade fan anti-vibration type vibration isolation structure of claim 1, wherein: a handle is arranged on one side of the movable rod (5), and anti-slip textures are arranged on the surface of the handle.

6. The nuclear grade fan anti-vibration type vibration isolation structure of claim 1, wherein: four corners of the base (1) are provided with mounting holes, and fixing bolts (101) are arranged in the mounting holes.