CN201121743Y - Hydraulic safety valve - Google Patents
Hydraulic safety valve Download PDFInfo
- Publication number
- CN201121743Y CN201121743Y CNU2007200455248U CN200720045524U CN201121743Y CN 201121743 Y CN201121743 Y CN 201121743Y CN U2007200455248 U CNU2007200455248 U CN U2007200455248U CN 200720045524 U CN200720045524 U CN 200720045524U CN 201121743 Y CN201121743 Y CN 201121743Y
- Authority
- CN
- China
- Prior art keywords
- clapboard
- shell
- oil tank
- sealing liquid
- housing
- 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
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model discloses a hydraulic valve belonging to the field of an oil tank safety protection device, the hydraulic valve comprises a flange, the upper end of which is connected with a vent pipe, the vent pipe upwards extends into a shell, the bottom part of which is sealed, the vent pipe is welded with the bottom part of the shell, the upper part of the shell is provided with a cover cap, an airflow passage communicated with the atmosphere is left between the edge of the cover cap and the upper part of the shell, the middle of the shell is provided with a clapboard, on which a balance pipe used for communicating the space at the upper side of the clapboard with the space at the lower side is arranged, and the lower port of the balance pipe is positioned at the outer side of the vent pipe, and is arranged lower than the upper port of the vent pipe. During the operation, the hydraulic valve is connected with an oil tank through the flange, the shell at the lower part of the clapboard is internally provided with sealing liquid of a certain amount, so as to form the pressure in a hydraulic balancing oil tank, when the oil-air pressure in the oil tank is sharply increased, the oil-air upwards pushes the sealing liquid to the upper part of the clapboard, thereby preventing the oil tank from deforming or exploding due to too high pressure, and when the pressure in the oil tank is normal, the sealing liquid at the upper part of the clapboard flows back to the lower part of the clapboard. The hydraulic valve has the advantages that the sealing liquid can stand for a long time without refilling, and the management is convenient.
Description
Technical field
The utility model relates to a kind of oil storage tank safety protection device, the particularly a kind of and matching used deadweight safety valve of oil storage tank.
Background technique
In the prior art, have a kind of and the matching used deadweight safety valve of oil storage tank, mainly include flange, the flange upper end is connected with breathing pipe, breathing pipe upwards stretches in the housing of a bottom lock, breathing pipe welds mutually with housing bottom, housing top is provided with cover cap, be provided with a sleeve pipe in the cover cap, sleeve pipe is nested with downwards in the breathing pipe periphery and also and between the breathing pipe leaves the gap, also leave the gap between breathing pipe and periphery and the inner walls, the cover cap edge extends downward the housing upper periphery, leaves the air-flow path of connecting atmosphere between the edge of cover cap and the housing top.During work, by flange this device is connected with the oil storage tank gas-phase space, sealing liquid is housed in the housing, under the situation of oil storage tank inside and outside air pressure balance, the liquid level of this sealing liquid is not higher than open height on the breathing pipe, simultaneously, is not less than open height under the sleeve pipe; When the oil storage tank internal air pressure rises, the liquid level that promotes between breathing pipe and the sleeve pipe through breathing pipe descends, and the liquid level between housing and the sleeve pipe rises simultaneously, and oil-air pressure forms transient equiliblium in pressure that the water level rising forms and the oil storage tank, can avoid oil gas excessive, guarantee safety.Its deficiency is: when pressure in the oil storage tank sharply increases, in the housing the sealing liquid of adorning can from air-flow path, blow out with oil gas in the oil storage tank, air pressure recovers just often in oil storage tank, needs artificially to replenish in housing sealing liquid, its management is cumbersome, and operational safety is poor.
The model utility content
The purpose of this utility model provides a kind of deadweight safety valve, makes it under the prerequisite that keeps original performance, does not need for a long time to replenish sealing liquid, and reliability improves in the use.
The purpose of this utility model is achieved in that deadweight safety valve, comprise flange, the flange upper end is connected with breathing pipe, breathing pipe upwards stretches in the housing of a bottom lock, breathing pipe welds mutually with housing bottom, housing top is provided with cover cap, leave the air-flow path of connecting atmosphere between the edge of cover cap and the housing top, described housing middle part level is provided with dividing plate, dividing plate is provided with at least one and connects the dividing plate balance tube in space, both sides up and down, and the balance tube end opening is positioned at the breathing pipe outside and is lower than the breathing pipe position of upper.
During the utility model work, it is linked to each other with the oil storage tank gas-phase space by flange, the sealing liquid of in the housing of the lower partition, packing into, when the oil storage tank inside and outside air pressure balance, the liquid level of sealing liquid is not higher than open height on the breathing pipe, simultaneously, is not less than open height under the balance tube; Pressure rises in oil storage tank, the liquid level of the lower partition descends, liquid level in the balance tube rises, form pressure in the hydro-cushion oil storage tank, oil-air pressure increases severely in oil storage tank, and over balance Guan Suoneng form pressure maximum the time, oil gas promotes sealing liquid and rises in the housing on dividing plate top, oil gas overflows, to atmosphere, can avoid oil storage tank to be out of shape because of overpressure or quick-fried jar through air-flow path row, pressure recovery just often in oil storage tank, the sealing liquid on dividing plate top can be back in the housing of the lower partition from balance tube, again the less loss of sealing liquid in the enclosed balance pipe, housing can not need to replenish sealing liquid, its operational safety improves, and can reduce administration cost.Compared with prior art, the utility model can not need to replenish sealing liquid for a long time, manages convenient.
For preventing that sealing liquid from spraying from air-flow path, be positioned at suitable for reading and close air-flow path one side of balance tube on the described dividing plate and be provided with the blowout prevention plate.When the oil storage tank internal pressure sharply raise, being provided with of blowout prevention plate can be blocked the sealing liquid that is sprayed onto the dividing plate top from balance tube, avoids sealing liquid to spray from air-flow path.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is that the A-A of Fig. 1 is to view.
Wherein, 1 cover cap, 2 dividing plates, 3 air-flow paths, 4 housings, 5 balance tubes, 6 breathing pipes, 7 flanges, 8 blowout prevention plates.
Embodiment
As Fig. 1 and 2, be deadweight safety valve, comprise flange 7, flange 7 upper ends are connected with breathing pipe 6, breathing pipe 6 upwards stretches in the housing 4 of a bottom lock, breathing pipe 6 welds mutually with housing 4 bottoms, housing 4 tops are provided with cover cap 1, leave the air-flow path 3 of connecting atmosphere between the edge of cover cap 1 and housing 4 tops, described housing 4 middle part levels are provided with dividing plate 2, dividing plate 2 is provided with three balance tubes 5 of connecting dividing plate space, both sides about in the of 2, and balance tube 5 end openings are distributed in breathing pipe 6 outsides and are lower than breathing pipe 6 position of upper; Be positioned at balance tube 5 suitable for reading and close air-flow path 3 one sides on the described dividing plate 2 and be provided with blowout prevention plate 8.
Claims (2)
1, deadweight safety valve, comprise flange, the flange upper end is connected with breathing pipe, breathing pipe upwards stretches in the housing of a bottom lock, and breathing pipe welds mutually with housing bottom, and housing top is provided with cover cap, leave the air-flow path of connecting atmosphere between the edge of cover cap and the housing top, it is characterized in that: described housing middle part level is provided with dividing plate, and dividing plate is provided with at least one and connects the dividing plate balance tube in space, both sides up and down, and the balance tube end opening is positioned at the breathing pipe outside and is lower than the breathing pipe position of upper.
2, deadweight safety valve according to claim 1 is characterized in that: be positioned at suitable for reading and close air-flow path one side of balance tube on the described dividing plate and be provided with the blowout prevention plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200455248U CN201121743Y (en) | 2007-08-24 | 2007-08-24 | Hydraulic safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200455248U CN201121743Y (en) | 2007-08-24 | 2007-08-24 | Hydraulic safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201121743Y true CN201121743Y (en) | 2008-09-24 |
Family
ID=40008970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200455248U Expired - Fee Related CN201121743Y (en) | 2007-08-24 | 2007-08-24 | Hydraulic safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201121743Y (en) |
-
2007
- 2007-08-24 CN CNU2007200455248U patent/CN201121743Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20110824 |