CN2871439Y - Breathing manhole - Google Patents
Breathing manhole Download PDFInfo
- Publication number
- CN2871439Y CN2871439Y CN 200620001727 CN200620001727U CN2871439Y CN 2871439 Y CN2871439 Y CN 2871439Y CN 200620001727 CN200620001727 CN 200620001727 CN 200620001727 U CN200620001727 U CN 200620001727U CN 2871439 Y CN2871439 Y CN 2871439Y
- Authority
- CN
- China
- Prior art keywords
- valve disc
- disc body
- pressure release
- ring
- manhole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model discloses a respiration manhole comprising a round valve body with ring-shaped cross-section and a semicircle pressure releasing lid; the valve disc diameter is less than the pressure release diameter; two pins are arranged radically at the inner perimeter side on the upper end of the valve disc body; at the lower end of the releasing lid, a seal ring is arranged along the perimeter side; the sealing ring is opposite to the inner diameter of the valve disc body; more than two single directional air inlet valves are arranged at up end along the release ring; a round seal part is arranged on the perimeter at the low end face of the seal ring opposing to the up end of the round ring of valve disc body; more than two positioning slices opposite to the pins at radial side of inner perimeter of the sealing ring; a movable channel is arranged along the axis of the positioning and the pins are inserted into the channel. The respiration manhole structure is compact with good sealing performance, therefore can serve as a protective apparatus for the storing tanks.
Description
Technical field
The utility model relates to a kind of ventilation safety apparatus, particularly a kind of breathing manhole.
Background technology
According to national standard " code for fire protection design of petrochemical enterprises " regulation (GB50160-92): " fixed tank of first, Class B liquid should be established breathing valve "; As seen breathing valve is the indispensable safety facilities of storage tank.But the breathing valve that existing petrochemical enterprise uses is because pneumostome diameter and valve diameter are less, and respiratory capacity is also less; For the sake of security, just a plurality of breathing valves need be set, increase manufacturing cost, cost of installation and maintenance cost,, will stay potential safety hazard if there are indivedual breathing valves to damage.
The utility model content
At above-mentioned deficiency, the utility model purpose provides a kind of breathing manhole of breathing safety, compact conformation, good seal performance.
For achieving the above object, breathing manhole of the present utility model comprises that cross-sectional plane is the valve disc body and the semicircle pressure release lid of annular arrangement, and described valve disc body diameter covers diameter less than pressure release; All sides radially are provided with plural latch in the described valve disc body upper end; Described pressure release lid lower surface is along being provided with sealed circular ring in all side direction, the sealing internal radius is identical with described valve disc body internal diameter, be provided with plural at least breather cheek valve along described sealed circular ring upper surface, the corresponding circumference in sealing annulus lower surface and this circular ring type of valve disc upper surface is provided with the annular seal part; All side axial are provided with two above positions and the corresponding spacer of described latch in the described sealed circular ring, are provided with active tunnel along the spacer axis, and described latch is inserted this active tunnel.
The breathing manhole structure compactness of said structure, good seal performance; run into accidental cause cause jar in when rapid superpressure or vacuum; can be by the air inlet effect of breather cheek valve; perhaps air pressure backs down active tunnel that the pressure release lid time utilizes spacer and the group of latch greatly and establishes the position-limiting action control pressure release of pressure release lid covered and reset; avoid damaging storage tank and have an accident, can play the effect of safety guard-safeguard storage tank.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail:
Fig. 1 is the inner structure scheme drawing that the utility model is breathed manhole.
The specific embodiment
Manhole is mounted in the device on the tank roof, and diameter is big, thereby respiratory capacity is also big; Breathing manhole of the present utility model is mounted in the emergent breather of safety on the tank roof, usually and the supporting use of fire-retardant breather valve, as shown in Figure 1, it comprises that cross-sectional plane is the valve disc body 1 and the semicircle pressure release lid 2 of annular arrangement, and the diameter of valve disc body 1 is less than the diameter of pressure release lid 2; All sides radially are provided with plural latch 11 in valve disc body 1 upper end; Pressure release is covered 2 lower surfaces along being provided with sealed circular ring 21 in all side direction, sealing annulus 21 internal diameters are corresponding with valve disc body 1 internal diameter, be provided with the breather cheek valve 22 of being convenient to air inlet at least more than two along sealed circular ring 21 upper surfaces, the corresponding circumference in sealing annulus 21 lower surfaces and valve disc body 1 annular arrangement upper surface is provided with annular seal part 23; All side axial are provided with two above positions and described latch 11 corresponding spacers 24 in the sealed circular ring 21, are provided with active tunnel 241 along spacer 24 axis, and described latch 11 inserts this active tunnel 241; Like this; run into accidental cause cause jar in when rapid superpressure or vacuum; can be by the air inlet effect of breather cheek valve 22; perhaps air pressure backs down pressure release greatly and covers the position-limiting action control pressure release lid that the active tunnel 241 of utilizing spacer 24 at 2 o'clock and the group of latch 11 establish pressure release lid 2 and reset; avoid damaging storage tank and have an accident; can play safe back-fire relief effect again, be the safety device of protection storage tank.
During use, in order to increase the weight of pressure release lid 2, be provided with clump weight 25 at the inner top surface of pressure release lid 2.In order to guarantee safety in transit, each spacer 24 lower end is fixed on bolt 12 on interior all sides of valve disc body 1 lower end, remove bolt 12 during installation and both can normally use.In addition, annular seal part 23 materials can be selected oil resistant asbestos or polytetrafluoroethylene for use, have guaranteed excellent sealing performance between valve disc body 1 and the pressure release lid 2.
The breathing manhole of said structure is specially adapted to store the vault normal pressure tank that material binds with nitrogen, Have that level pressure discharging, level pressure suck, open and close flexibly, compact conformation, good seal performance, safe and reliable Advantage.
Claims (3)
1. breathe manhole for one kind, it is characterized in that: this breathing manhole comprises that cross-sectional plane is the valve disc body and the semicircle pressure release lid of annular arrangement, and described valve disc body diameter covers diameter less than pressure release; All sides radially are provided with plural latch in the described valve disc body upper end; Described pressure release lid lower surface is along being provided with sealed circular ring in all side direction, the sealing internal radius is corresponding with described valve disc body internal diameter, be provided with plural at least breather cheek valve along described sealed circular ring upper surface, the corresponding circumference in sealing annulus lower surface and this circular ring type of valve disc upper surface is provided with the annular seal part; All side axial are provided with two above positions and the corresponding spacer of described latch in the described sealed circular ring, are provided with active tunnel along the spacer axis, and described latch is inserted this active tunnel.
2. breathing manhole according to claim 1 is characterized in that: the inner top surface of described pressure release lid is provided with clump weight.
3. breathing manhole according to claim 1 and 2 is characterized in that: described each spacer lower end can be fixed on interior all sides of valve disc body lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620001727 CN2871439Y (en) | 2006-01-24 | 2006-01-24 | Breathing manhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620001727 CN2871439Y (en) | 2006-01-24 | 2006-01-24 | Breathing manhole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2871439Y true CN2871439Y (en) | 2007-02-21 |
Family
ID=37739785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620001727 Expired - Fee Related CN2871439Y (en) | 2006-01-24 | 2006-01-24 | Breathing manhole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2871439Y (en) |
-
2006
- 2006-01-24 CN CN 200620001727 patent/CN2871439Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070221 Termination date: 20150124 |
|
| EXPY | Termination of patent right or utility model |