CN212297627U - Gravity pressure relief valve with openable guide vane air door - Google Patents
Gravity pressure relief valve with openable guide vane air door Download PDFInfo
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- CN212297627U CN212297627U CN201921964586.8U CN201921964586U CN212297627U CN 212297627 U CN212297627 U CN 212297627U CN 201921964586 U CN201921964586 U CN 201921964586U CN 212297627 U CN212297627 U CN 212297627U
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- relief valve
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- guide vane
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Abstract
The utility model belongs to the technical field of the nuclear power station operation maintenance, concretely relates to gravity relief valve with openable stator air door. The device comprises a plurality of guide vane air doors and a valve connecting frame; the middle of the valve connecting frame is symmetrically provided with an opening, and the guide vane air doors are fixedly arranged on two sides of the opening of the valve connecting frame through hinges respectively. Has the advantages that: the utility model discloses a gravity relief valve passes through air door, hinge, compresses tightly the stator combination that this three kinds of key structure of hasp made conventional gravity relief valve and has possessed the ability that outwards opens and shuts. This device simple structure can effectively practice thrift the time cost that personnel demolishd the gravity relief valve, avoids maintainer to stretch out the security risk that enters into the inside fire prevention valve that carries on of stator and resets, and the optimization equipment structure improves work efficiency. The valve is suitable for the working environment of most gravity relief valves and has strong popularization.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power station operation maintenance, concretely relates to gravity relief valve with openable stator air door.
Background
The DVH system (emergency ventilation system of the upper charge pump room) of the nuclear power plant plays an important role in the safe operation of the nuclear power plant. When the temperature of the upper pump charging room is high or under the working conditions of fire and accident, the DVH fan is started to ventilate the upper pump charging room, so that the temperature required by the inlet of the upper pump charging oil cooler is ensured, and the safe operation of the upper pump charging is ensured. Wherein the gravity pressure relief valve is arranged at the position of the upper charge pump room, which is about 4 meters away from the ground. CN201620792469.8 discloses a nuclear power station gravity relief valve, and the gravity relief valve is formed by the combination of multi-disc stator and stator frame, and the stator is fixed on rectangle stator frame by the pivot lug, and the stator frame passes through bolted connection to be fixed on the gravity relief valve body. 1 fire prevention valve is respectively installed to these gravity relief valve backs, and the fire prevention valve needs carry out the manual work after accomplishing the function test at every turn and resets, need dismantle gravity relief valve stator frame earlier or operating personnel will stretch into gravity relief valve stator blade interval department with the hand, just can carry out manual reset to the fire prevention valve. At present, a guide vane frame of each gravity relief valve is fixed by 18 common hexagon bolts, and is very inconvenient to disassemble on the inner side of a valve body; and the operation degree of difficulty that resets is stretched into gravity relief valve blade interval department with the hand to operating personnel is big, and has the risk of losing the hand and crushing the hand. Therefore, a new valve structure is needed to be designed, and the valve or the guide vane can be opened rapidly without affecting the function, so that the fire damper can be reset or maintained.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to current gravity relief valve dismantles inconvenient problem, provides a gravity relief valve with open stator air door.
The technical scheme of the utility model as follows:
a gravity pressure relief valve with an openable guide vane air door comprises a plurality of guide vane air doors and a valve connecting frame; the middle of the valve connecting frame is symmetrically provided with an opening, and the guide vane air doors are fixedly arranged on two sides of the opening of the valve connecting frame through hinges respectively.
Furthermore, the valve connecting frame is also provided with a pressing lock catch which is arranged at the opening of the valve connecting frame and used for pressing the edge of the guide vane air door. The pressing lock catch comprises an operating handle, a lock catch hook and a U-shaped lock catch, the lock catch hook is installed on the upper edge and the lower edge of the guide vane air door, and the U-shaped lock catch and the operating handle are installed on the valve connecting frame.
Further, the guide vane air door includes air door frame and guide vane, and the guide vane is fixed on the air door frame through two pivots.
Further, the stator air door is four, including upper left air door, upper right air door, lower left air door and lower right air door. The upper left air door and the lower left air door are connected with the upper right air door and the lower right air door through side butterfly bolts respectively. The middle of the four guide vane air doors is provided with a central butterfly bolt which can connect the four guide vane air doors. The upper left air door and the upper right air door are respectively provided with two guide vanes, and the lower left air door and the lower right air door are respectively provided with 3 guide vanes.
Furthermore, the valve connecting frame is provided with two openings, and an air door supporting strip is arranged between the two openings.
Furthermore, the hinge support is an L-shaped support of the air door hinge and is fixed on two sides of the valve connecting frame.
The beneficial effects of the utility model reside in that:
the guide vane air door openable gravity relief valve of the utility model has the capability of outward opening and closing the fixed guide vane combination of the conventional gravity relief valve through three key structures, namely the air door, the hinge and the pressing lock catch, and an operator only needs to open the butterfly bolt; the 6 groups of the compression lock catches can be opened by pulling the lock catch handles, then the two groups of the air doors can be opened like opening the door by pulling the hoisting ring, and the fire damper behind the air doors is exposed to the outside to operate. If the field space is limited, a barrier blocks the air door from being opened, an operator only needs to unscrew the 3 butterfly bolts to divide the air door into an upper group and a lower group, the required air door is opened and closed according to actual requirements, and the best maintenance effect is achieved. This device simple structure can effectively practice thrift the time cost that personnel demolishd the gravity relief valve, avoids maintainer to stretch out the security risk that enters into the inside fire prevention valve that carries on of stator and resets, and the optimization equipment structure improves work efficiency. The valve is suitable for the working environment of most gravity relief valves and has strong popularization.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the shape of the valve interface cage of FIG. 1;
FIG. 3 is a schematic view of the position of the hinge bracket of FIG. 2;
FIG. 4 is a schematic external view of the vane damper of FIG. 1;
FIG. 5 is a cross-sectional view of FIG. 3;
FIG. 6 is a schematic view of the locking buckle of FIG. 1;
fig. 7 is a cross-sectional view of fig. 5.
In the figure: 1-a valve nameplate, 2-an air door frame, 3-a valve connecting frame, 4-a side butterfly bolt, 5-a hinge, 6-a hinge support, 7-a support angle steel, 8-a rotating shaft, 9-a guide vane, 10-a hoisting ring, 11-a locking press buckle, 12-an upper left air door, 13-an upper right air door, 14-a lower left air door, 15-a lower right air door, 16-an air door support strip, 17-an operating handle, 18-a hook, 19-a U-shaped lock catch and 20-a center butterfly bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The embodiment provides a gravity relief valve with openable guide vane air doors, which is structurally shown in fig. 1 and mainly comprises a plurality of guide vane air doors, a valve connecting frame 3 and a pressing lock catch 11.
The shape of valve link 3 is shown in fig. 2, and the centre symmetry is equipped with two openings, one side of stator air door is installed in two opposite sides of two openings of valve link 3 through hinge 5 respectively for two fan stator air doors can be run from opposite directions. The valve connecting frame 3 is also provided with a valve nameplate 1 for marking the number of the valve.
In order to strengthen the structural strength, a reinforcing rib can be arranged between the two openings of the valve connecting frame; or the valve connecting frame 3 can also be provided with an opening, and the middle of the opening is provided with an air door supporting strip 16 capable of supporting the weight of the guide vane air door, so that the free ends of the four air doors are supported, and the air doors are ensured to be parallel to the flange surface of the air pipe when the air doors are closed. The guide vane air door is installed at two openings of the valve connecting frame 3, and the guide vane air door is at least two, and can also be set to three, four or six. Each guide vane air door is connected to the valve connecting frame 3 of the gravity pressure relief valve through a hinge 5, so that the mode that a guide vane frame of the gravity pressure relief valve in the prior art is fixed with a valve body through a bolt is replaced. Through the hinge 5, the guide vane air door can be opened to both sides like a door, thereby exposing the air pipe and the fire damper behind the gravity relief valve.
As shown in fig. 3, the hinge bracket 6 is an L-shaped bracket of the damper hinge 5, and is welded and fixed at both sides of the valve connecting bracket 3 for mounting the hinge shaft.
As shown in fig. 4 and 5, each guide vane damper has a similar structure, and mainly includes a damper frame 2, a guide vane 9 is fixed on the damper frame 2 through two rotating shafts 8, and the guide vane is turned outwards when air flow blows. The air door frame 2 is a metal frame structure with an L-shaped cross section, and forms a ring structure with a convex middle part.
As shown in fig. 1, the guide vane damper of the present embodiment is four, and includes a left upper damper 12, a right upper damper 13, a left lower damper 14, and a right lower damper 15. The left upper air door 12 and the right upper air door 13 are respectively provided with two guide vanes which are respectively connected with a group of hinges 5; the left lower air door 14 and the right lower air door 15 are respectively provided with 3 guide vanes which are respectively connected with the two groups of hinges 5. Meanwhile, the left upper air door 12 and the left lower air door 14, and the right upper air door 13 and the right lower air door 15 are connected by the left and right side butterfly bolts 4 to form a left air door and a right air door. As long as these two side butterfly bolts 4 are opened, can make upper and lower two sets of air doors break away from: the upper group of air doors or the lower group of air doors can be opened independently according to the use requirements, and the air door structure is suitable for the working environment with limited space. In addition, in order to further avoid the guide vane air door from being blown open when in use, a central butterfly bolt 20 is also arranged, and the valve is used for connecting four air doors when being closed, thereby playing the roles of bolt and locking.
As shown in fig. 1 and 4, the pressing latch 11 is disposed at the opening of the valve connecting frame 3 for pressing the edge of the guide vane damper. The hinges 5 are respectively arranged at the left side and the right side of the opening, and the pressing lock catches 11 are arranged at the upper side and the lower side of the opening. When the guide vane air door is closed, the guide vane air door is locked by pressing the lock catch 11, so that the guide vane air door is prevented from being blown open during operation. The 6 groups of compression latches 11 are structurally shown in fig. 6 and 7, latch hooks 18 are welded on the upper edge and the lower edge of the air door, a U-shaped latch 19 and an operating handle 17 are arranged on the valve connecting bracket 3, and the U-shaped latch can be disengaged from or clamped into the latch hooks 18 by pulling the latch handle 17 up and down, so that the air door is disengaged or locked. The structure belongs to the main fixing measure of the guide vane air door, and the easy operability and the quick switching characteristic of the structure enable the gravity pressure relief valve air duct to be opened completely in half a minute.
Still be provided with two hoisting rings 10 on every stator air door, hoisting ring 10 is used for the transportation of gravity relief valve and opening of stator air door, and the maintainer opens the stator air door through pulling air door hoisting ring 10 after loosening and compressing tightly hasp 11.
2 bottoms of air door frame are equipped with four support angle steel 7, weld the angle steel one side in the valve link bottom, and when the air door was closed, the angle steel another side can play the effect of supporting air door weight, prevents that air door hinge, the ageing pine of hasp from taking off the air door that leads to and drop, increases the life of hinge.
The use method of the gravity relief valve of the embodiment sequentially comprises the following steps:
with but the open gravity relief valve replacement original gravity relief valve of stator air door, the valve is under the normal behavior: 4 fans of air doors are closed simultaneously, 3 butterfly nuts are screwed and fixed, 6 groups of compression lock catches are in a locked state, and at the moment, the function of the gravity pressure relief valve is the same as that of a common gravity pressure relief valve, and the guide vanes are controlled to be opened and closed by air flow in the pipeline.
When the fire damper fails or needs to be reset after the gravity relief valve, an operator only needs to open the central butterfly bolt 20; the lock catch handle 17 is pulled, 6 groups of the compression lock catches are opened, then the hoisting ring 10 is pulled to open two groups of the air doors like opening the door, and the fire damper behind the air doors is exposed to operate.
If the field space is limited, a barrier blocks the air door from being opened, an operator only needs to unscrew the 2 side butterfly bolts 4 to divide the air door into an upper group and a lower group, the required air door is opened and closed according to actual requirements, and the best maintenance effect is achieved.
And (3) closing the air door: firstly, closing four fans of air doors, then screwing 3 butterfly bolts, and then sequentially pulling 6 groups of operating handles for pressing the lock catches: the valve is restored to the initial state by tightly locking and pressing the lock catch.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (10)
1. The utility model provides a gravity relief valve with open formula stator air door which characterized in that: comprises a plurality of guide vane air doors and a valve connecting frame (3); the middle of the valve connecting frame (3) is symmetrically provided with an opening, and the guide vane air doors are fixedly arranged on two sides of the opening of the valve connecting frame (3) through hinges (5) respectively.
2. A gravity pressure relief valve having an openable vane damper, as claimed in claim 1, wherein: the valve connecting frame (3) is further provided with a pressing lock catch (11) which is installed at the opening of the valve connecting frame (3) and used for pressing the edge of the guide vane air door.
3. A gravity pressure relief valve with an openable vane damper as claimed in claim 1 or 2, wherein: the guide vane air door comprises an air door frame (2) and guide vanes (9), and the guide vanes (9) are fixed on the air door frame (2) through two rotating shafts (8).
4. A gravity pressure relief valve with an openable vane damper as claimed in claim 1 or 2, wherein: the guide vane air door is four, including upper left air door (12), upper right air door (13), lower left air door (14) and lower right air door (15).
5. The gravity relief valve with an openable vane damper of claim 4, wherein: the left upper air door (12) is connected with the left lower air door (14), the right upper air door (13) is connected with the right lower air door (15) through side butterfly bolts (4).
6. The gravity pressure relief valve with an openable vane damper of claim 5, wherein: a central butterfly bolt (20) is arranged in the middle of the four guide vane air doors, so that the four guide vane air doors can be connected.
7. The gravity relief valve with an openable vane damper of claim 4, wherein: the upper left air door (12) and the upper right air door (13) are respectively provided with two guide vanes, and the lower left air door (14) and the lower right air door (15) are respectively provided with 3 guide vanes.
8. A gravity pressure relief valve with an openable vane damper as claimed in claim 1 or 2, wherein: the valve connecting frame (3) is provided with two openings, and an air door supporting strip (16) is arranged between the two openings.
9. A gravity pressure relief valve with an openable vane damper as claimed in claim 1 or 2, wherein: hinge supports (6) are fixed on two sides of the valve connecting frame (3), and the hinge supports (6) are L-shaped supports of the air door hinge (5).
10. A gravity pressure relief valve having an openable vane damper, as claimed in claim 2, wherein: the pressing lock catch (11) comprises an operating handle (17), a lock catch hook (18) and a U-shaped lock catch (19), the lock catch hook (18) is installed on the upper edge and the lower edge of the guide vane air door, and the U-shaped lock catch (19) and the operating handle (17) are installed on the valve connecting frame (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964586.8U CN212297627U (en) | 2019-11-14 | 2019-11-14 | Gravity pressure relief valve with openable guide vane air door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964586.8U CN212297627U (en) | 2019-11-14 | 2019-11-14 | Gravity pressure relief valve with openable guide vane air door |
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| Publication Number | Publication Date |
|---|---|
| CN212297627U true CN212297627U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921964586.8U Active CN212297627U (en) | 2019-11-14 | 2019-11-14 | Gravity pressure relief valve with openable guide vane air door |
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| CN (1) | CN212297627U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985685A (en) * | 2019-11-14 | 2020-04-10 | 中核核电运行管理有限公司 | Gravity pressure relief valve with openable guide vane air door and use method thereof |
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2019
- 2019-11-14 CN CN201921964586.8U patent/CN212297627U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985685A (en) * | 2019-11-14 | 2020-04-10 | 中核核电运行管理有限公司 | Gravity pressure relief valve with openable guide vane air door and use method thereof |
| CN110985685B (en) * | 2019-11-14 | 2024-05-10 | 中核核电运行管理有限公司 | Gravity pressure relief valve with openable guide vane damper and method of use thereof |
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