CN103573125B - Rectangular equipment gate - Google Patents

Abstract

The invention relates to a rectangular equipment gate, which belongs to the technical field of nuclear facilities. Its structure includes a door frame fixed at the door opening of the building. The door frame is provided with a door panel that can be opened and closed up and down. During the operation of nuclear facilities, the equipment gate is in a closed state. The gate structure fastens the gate panel and the door frame through the peripheral bolts to compress the sealing strip, which acts as a seal between the door panel and the door frame. The evacuation door structure passes through the locking mechanism. The sealing strip is compressed to play a sealing role. During the installation, refueling and maintenance of nuclear facilities, the equipment gate can provide double independent channels for the entry and exit of large equipment and personnel through two different opening and closing methods. Compared with the existing equipment gate, the rectangular equipment gate of the present invention has enhanced functionality while simplifying the structure, enriches the products of special gates for nuclear facilities, and can be widely used in the field of nuclear facilities.

Description

Rectangular equipment gate

technical field

The invention belongs to nuclear engineering special facilities, in particular to a rectangular equipment gate for large equipment and personnel to enter and exit.

Background technique

During the installation, refueling, maintenance and operation of nuclear facilities, relevant equipment and staff need to enter, and the equipment gate is required to be a part of the pressure boundary of the plant, which can withstand the loads (temperature, pressure, etc.) of various design basis accidents and maintain The airtightness and safety of the plant. The equipment gate is located at the boundary of the plant, which not only has the airtightness and safety required by nuclear facilities, but also provides independent dual channels for the entry and exit of large equipment and personnel.

It is difficult for the existing equipment gates in the nuclear power field to meet the design requirements of other nuclear facilities in terms of product selection and structural design, so it is necessary to improve the structure of the equipment gates.

Contents of the invention

The object of the present invention is to provide a rectangular equipment gate which meets the actual needs of nuclear facilities at the same time with pressure-bearing sealing performance, shock resistance and safety.

The technical scheme of the present invention is as follows: a rectangular equipment gate, including a rectangular gate frame fixed at the door opening of a building, a gate panel that can be opened and closed up and down is provided on the gate frame, a stop device is installed on the upper part of the gate frame, and a stop device is installed on the lower part of the gate frame. A centering device and a centering device are provided, and a number of guide blocks are arranged longitudinally on the wall columns on both sides of the gate frame respectively, wherein a first double sealing strip is provided between the circumference of the gate frame and the gate panel, It is fastened by fasteners on the circumference of the gate panel; there is an evacuation door in the middle of the gate panel for personnel to enter and exit, and a second double sealing strip is provided between the evacuation door circumference and the gate panel to facilitate evacuation. The door is connected with the hinge mechanism arranged on the door panel of the gate to realize rotation opening and closing, and a locking mechanism is provided on the evacuation door.

Further, the above-mentioned rectangular equipment gate, wherein, the gate panel is provided with steel platforms at different heights required by the staff for operation, and the steel platforms of different heights are connected by ladders.

Further, the above-mentioned rectangular equipment gate, wherein the centering device includes a first plug assembly located at the bottom of the gate frame, and several first rollers are symmetrically arranged above the first plug assembly, A positioning space is formed between the first rollers, and the first rollers are fixed by the first sliding bushing and the first pin.

Further, the above-mentioned rectangular equipment gate, wherein the centering device includes a second plug assembly located at the bottom of the door frame, and a second roller is arranged above the second plug assembly, and the The second roller is fixed by a horizontally arranged second sliding bushing and a second pin.

Further, the above-mentioned rectangular equipment gate, wherein the hinge mechanism includes a hinge shaft vertically arranged on the door panel of the gate through a hinge bracket, and the two ends of the hinge shaft are connected to the sides of the evacuation door through hinges.

Further, the above-mentioned rectangular equipment gate, wherein the locking mechanism includes locking bolts respectively arranged on the four corners of the evacuation door, each locking bolt is respectively connected with a ball screw pair through a connecting rod, and the ball screw pair It is connected with the hand wheel through the reducer.

Further, the above-mentioned rectangular equipment gate, wherein, a door leak detection hole is provided on the door plate of the gate corresponding to the first double-seal; Leak.

The beneficial effects of the present invention are as follows: the present invention designs a rectangular equipment gate with an evacuation door and pressure-tightness, anti-seismic Class I, and safety level SC through the targeted improvement of the prior art, which can reach the nuclear quality assurance QA2 level. Safety level requirements, can be widely used in the construction of special doors for nuclear facilities in my country.

Description of drawings

Fig. 1 is the schematic diagram of the equipment gate structure provided by the present invention;

Figure 2 is a top view of the equipment gate;

Fig. 3 is a side view of the equipment gate;

Fig. 4 is a structural schematic diagram of the centering device;

Fig. 5 is a structural schematic diagram of a centering device;

Fig. 6 is a schematic diagram of the hinge mechanism of the evacuation door;

Fig. 7 is a schematic diagram of the locking mechanism of the evacuation door.

In the figure, 1. The door frame of the gate; 2. The first double seal; 3. The door panel of the gate; 4. The ladder; 5. The guide block; 6. The stop device; ;9. Hinge mechanism; 10. Leak detection hole of the gate; 11. Locking mechanism; 12. Top screw; 13. Centering device; 14. Evacuation door; 15. Centering device; 16. Steel platform; A plug assembly; 18. The first roller; 19. The first pin; 20. The first sliding sleeve; 21. The second plug assembly; 22. The second pin; 23. The second roller; 24. The first Two sliding sleeves; 25. hinge bracket; 26. hinge shaft; 27. locking bolt; 28. connecting rod; 29. ball screw pair; 30. hand wheel; 31. reducer.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 and 2, the gate part of the equipment gate is mainly composed of a gate frame 1, a gate panel 3, a guide block 5, a stop device 6, a centering device 13, a centering device 15 and other components. The gate frame 1 is provided with the first double seal 2, and the fastening of the gate frame and the door plate is carried out by the fasteners 7 (bolts) evenly arranged on the 3 circles of the gate plate to ensure the sealing of the gate. The gate door panel 3 is designed with the steel platform 16 required for the staff to operate when performing maintenance and pre-tightening/releasing the fasteners, and the steel platforms at different heights are connected by climbing ladders 4 .

The stop device 6 is installed on the door frame 1, and mainly includes two parts, the chute and the stop block, which are used for the support after the equipment gate is opened and put in place. During the up and down movement of the gate, the stop block remains in the chute and does not interfere with the opening and closing movement of the gate.

When the gate needs to be opened, the lifting mechanism lifts the gate panel of the gate to a height slightly higher than the stop device at the bottom, then pulls out the stopper, and the gate panel falls onto the stopper at a low speed, and remains at this position to complete the opening of the gate. Open; when closing the gate, first lift the gate panel a certain distance, then push back the stopper, and then the gate panel descends to the closed position.

There is an evacuation door 14 in the middle of the gate door panel 3 for people to enter and exit. A second double-track sealing strip is provided between the circumference of the evacuation door 14 and the gate panel. The connection realizes rotary opening and closing, and a locking mechanism 11 is provided on the evacuation door 14 .

As shown in Figure 1, a door leak detection hole 10 is provided at the position corresponding to the first double seal strip on the gate door panel 3; an evacuation door leak detection hole 8 is provided at the position corresponding to the second double seal strip on the evacuation door 14 . After the gate is installed, the airtightness test should be carried out. Compressed air is added to the leakage test hole 8 of the evacuation door and the leak test hole 10 of the gate to carry out the air pressure test, and the air tightness of the gate is ensured by detecting the leakage. Adjust the amount of compression according to the actual situation to further enhance the sealing.

As shown in Figure 1 and Figure 3, during the lifting and lowering process of the gate panel, the guide blocks 5 installed on the wall columns on both sides of the gate frame adjust the gap with the gate panel 3, and the centering device 13 and the centering device 15 work together to ensure the smooth opening and closing of the gate of the equipment gate. When opening, loosen the fastening bolts on the 3rd circle of the gate panel, screw the top bolt 12 to the gate frame, and the top bolt 12 will push the gate frame open, and the The door panel is separated from the door frame to avoid wear on the sealing strip during lifting.

As shown in Figures 1, 4 and 5, the centering device 13 includes a first plug assembly 17, a first roller 18, a first pin shaft 19, and a first sliding bushing 20. A plurality of first rollers 18 are arranged symmetrically above a plug assembly 17 , positioning spaces are formed between the first rollers 18 , and the first rollers 18 are fixed by the first sliding sleeve 20 and the first pin 19 . The centering device 15 includes a second plug assembly 21, a second pin shaft 22, a second roller 23, and a second sliding bushing 24, and the second roller 23 passes through the second sliding bushing 24 arranged horizontally and the second Bearing pin 22 is fixed. The centering device 15 and the centering device 13 ensure the centering of the gate panel 3 and the gate frame 1 when the equipment gate is closed.

As shown in Fig. 1, Fig. 6 and Fig. 7, the evacuation door 14 is connected with the door panel 3 through the hinge mechanism 9, and the airtightness of the door is guaranteed by two sealing strips, and the compression of the sealing strips can be adjusted according to the actual situation Quantity, give full play to the performance of the sealing strip. The side of evacuation door is connected with hinge shaft 26 two ends by hinge, and hinge shaft 26 is vertically arranged on the gate door panel 3 by hinge bracket 25, and evacuation door rotates and opens with hinge shaft 26 as the center. The locking mechanism 11 of the evacuation door is mainly composed of a locking bolt 27, a connecting rod 28, a ball screw pair 29, a hand wheel 30, a speed reducer 31 and other components, and the hand wheel 30 drives the speed reducer 31 to drive the screw 29 to rotate , drive the locking bolt 27 to move in translation through the connecting rod 28, so as to realize the sealing and closing of the door;

The gate and evacuation door of the equipment gate provided by the present invention are designed with two different forms of sealing methods according to actual needs. The gate structure tightens and compresses the sealing strip through the fastening bolts around the door panel and the door frame to realize the airtightness of the gate; the evacuation door passes through The locking mechanism compresses the sealing strip to realize the tightness of the evacuation door. During the installation, refueling and maintenance of nuclear facilities, the equipment gate can provide double independent channels for the entry and exit of large equipment and personnel through two different opening and closing methods. Compared with the existing equipment gate, the rectangular equipment gate of the present invention has enhanced functionality while simplifying the structure, enriches the products of special gates for nuclear facilities, and can be widely used in the field of nuclear facilities.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (5)

1. a rectangular equipment gate, comprise the rectangle gate doorframe (1) being fixed on building door opening place, gate doorframe (1) is provided with the large door board (3) that can open and close up and down, stop device (6) is equipped with on gate doorframe (1) top, gate doorframe (1) bottom is provided with centralising device (15) and centering device (13), gate doorframe (1) both sides wall column is longitudinally provided with several guide pads (5) respectively successively, it is characterized in that: between described gate doorframe (1) border and large door board, be provided with the first double sealing bar (2), fastening by the securing member (7) on large door board (3) border, the egress door (14) for personnel's turnover is had in the middle of described large door board (3), the second double sealing bar is provided with between described egress door (14) border and large door board (3), egress door (14) is connected with the linkage (9) be arranged on large door board (3) and realizes rotary opening and closing, and egress door (14) is provided with retaining mechanism (11), described centering device (13) comprises the first plug component (17) be positioned at bottom gate doorframe, several first rollers (18) are arranged with in the top of described the first plug component (17), first roller forms located space between (18), and described the first roller (18) is fixed by the first sliding shaft sleeve (20) and the first bearing pin (19), described centralising device (15) comprises the second plug component (21) being positioned at gate doorframe (1) bottom, be provided with the second roller (23) in the top of described the second plug component (21), described the second roller (23) is fixed by horizontally disposed second sliding shaft sleeve (24) and the second bearing pin (22).

2. rectangular equipment gate as claimed in claim 1, it is characterized in that: described large door board (3) is provided with for the steel platform (16) being positioned at differing heights needed for operated by personnel, is connected between the steel platform (16) of differing heights by cat ladder.

3. rectangular equipment gate as claimed in claim 1 or 2, it is characterized in that: described linkage (9) comprises the hinge axis (26) be vertically arranged on by hinge bracket (25) on large door board, and hinge axis (26) two ends are connected by the side of hinge with egress door (14).

4. rectangular equipment gate as claimed in claim 1 or 2, it is characterized in that: described retaining mechanism (11) comprises the lock plunger (27) be separately positioned on egress door (14) corner, each lock plunger (27) is connected with ball screw assembly, (29) respectively by connecting rod (28), and ball screw assembly, (29) is connected with handwheel (30) by reducer (31).

5. rectangular equipment gate as claimed in claim 1 or 2, is characterized in that: on large door board, the position of corresponding first double sealing bar (2) is provided with gate and leaks hunting hole (10); Be provided with egress door to leak hunting hole (8) in the position of the upper corresponding second double sealing bar of egress door (14).