CN217030104U - Emergency pressure/vacuum relief valve - Google Patents
Emergency pressure/vacuum relief valve Download PDFInfo
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- CN217030104U CN217030104U CN202220551809.3U CN202220551809U CN217030104U CN 217030104 U CN217030104 U CN 217030104U CN 202220551809 U CN202220551809 U CN 202220551809U CN 217030104 U CN217030104 U CN 217030104U
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Abstract
The utility model provides an urgent pressure vacuum relief valve, includes rain-proof cover, pressure end, vacuum end and pressure end disk seat, and vacuum end and rain-proof cover are fixed on the pressure end, and rain-proof cover covers the outside of establishing at the vacuum end, and the lower surface of pressure end can closely laminate/keep away from pressure end disk seat. The utility model forms a combination body by the embedded groove design of the diaphragm and the pressure end valve plate and the counterweight, the counterweight and the combined pressure end provide downward force and the pressure end valve seat is compressed fully to form effective sealing; the vacuum end valve plate internally-wrapped sealing diaphragm is fully compressed with the vacuum valve seat through an embedded groove design to form effective sealing; the pressure end and the vacuum end are taken down by unfastening the limit rope, and the limit rope can be used as a manhole for inspection and maintenance; the unique 90 ° downward skirt design of the pressure end valve plate facilitates the pressure end valve plate opening height to reach 1/4 flow passage diameter, i.e., the maximum opening value, after 10% overpressure.
Description
Technical Field
The utility model relates to the technical field of vacuum relief valves, in particular to an emergency pressure/vacuum relief valve.
Background
At present, the emergency relief valve can only provide steam pressure release generated by boiling of liquid in the storage tank due to fire outside the storage tank, and when rare heavy rain is encountered and the outer surface of the storage tank body is washed for a long time to cause temperature imbalance in the storage tank, the temperature imbalance can form extreme vacuum. The failure of the vacuum relief capability of the breather valve to meet the vacuum release requirement of the storage tank in an extreme case leads to the rupture of the storage tank due to atmospheric extrusion.
The existing sealing structure of the emergency bleeder valve has the defects of scaling down, serious steam escape and incapability of being used as a manhole.
SUMMERY OF THE UTILITY MODEL
The object of the present invention is to solve at least one of the technical drawbacks mentioned.
Therefore, the present invention is directed to an emergency pressure/vacuum relief valve, which solves the above-mentioned problems and overcomes the shortcomings of the prior art.
The utility model provides an urgent pressure vacuum relief valve, includes rain-proof cover, pressure end, vacuum end and pressure end disk seat, the vacuum end rain-proof cover is fixed on the pressure end, rain-proof cover is covered and is established the outside of vacuum end, the lower surface of pressure end can closely laminate/keep away from pressure end disk seat.
Preferably, the pressure end includes pressure end valve plate, diaphragm and counter weight, the upper surface of pressure end valve plate is equipped with the diaphragm, the diaphragm is pressed upward and is equipped with the counter weight, the lower surface of pressure end valve plate with the pressure end valve block closely laminates/keeps away from.
Preferably, in any one of the above schemes, a first groove is formed in the pressure end valve plate, and the diaphragm is embedded in the first groove.
Preferably, in any of the above solutions, the pressure end valve plate is provided with a 90 ° downward skirt.
Preferably by any one of the above schemes, the vacuum end comprises a vacuum valve seat, a vacuum end valve plate, a valve rod and a spring, the vacuum valve seat is fixed with the lower surface of the pressure end valve plate, the vacuum end valve plate is connected with the vacuum valve seat through the valve rod, and the spring is arranged outside the valve rod to realize that the vacuum valve seat is tightly attached to/away from the vacuum end valve plate.
Preferably, in any of the above schemes, a second groove is formed at the bottom of the vacuum valve seat, and the vacuum end valve plate is embedded in the second groove.
Preferably, according to any of the above schemes, the vacuum end valve plate is internally wrapped with a sealing film.
According to any one of the above schemes, preferably, a protective net is further arranged between the vacuum end and the rain cover.
In any of the above schemes, preferably, a limiting rope is connected between the pressure end valve seat and the pressure end.
Preferably, according to any one of the above schemes, the bottom of the pressure end is further provided with a guide rod, and the guide rod is attached to the outer surface of the valve seat of the pressure end.
Compared with the prior art, the utility model has the advantages and beneficial effects that:
through the design of embedded grooves of the diaphragm and the pressure end valve plate and the balance weight, a combined body is formed, and the balance weight and the combined pressure end provide downward force and the pressure end valve seat is compressed fully to form effective sealing;
the vacuum end valve plate internally-wrapped sealing diaphragm is fully compressed with the vacuum valve seat through an embedded groove design to form effective sealing;
the pressure end and the vacuum end are taken down by unfastening the limit rope, and the limit rope can be used as a manhole for inspection and maintenance;
the unique 90-degree downward skirt design of the pressure end valve plate is beneficial to the opening height of the pressure end valve plate reaching 1/4 flow channel diameter after 10% of overpressure, namely the maximum opening value is reached;
the protective net prevents dirt, and avoids birds from entering and influencing and causing the valve plate of the vacuum end to be blocked or invalid.
The utility model can solve the problem of unbalance of pressure accumulation in the tank caused by emergency due to operation errors and other problems or external fire conditions, can also solve the problem of high vacuum caused by full-speed outward discharging of the storage tank due to operation errors or temperature unbalance in the tank due to overlarge rainfall outside the storage tank, and has wide application range and simple structure.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of the structure in the case of embodiment 1;
FIG. 2 is a schematic structural view in the case of embodiment 2;
FIG. 3 is a schematic structural view in the case of embodiment 3;
wherein:
1. a rain cover; 2. a protective net; 3. a limiting rope; 4. a spring; 5. balancing weight; 6. a diaphragm; 7. a pressure end valve plate; 8. a vacuum valve seat; 9. a vacuum port valve plate; 10. a pressure end valve seat; 11. a valve stem; 12. a guide rod.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
As shown in fig. 1, an emergency pressure/vacuum relief valve comprises a rain cover 1, a pressure end, a vacuum end and a pressure end valve seat 10, wherein the vacuum end and the rain cover 1 are fixed on the pressure end, the rain cover 1 covers the outside of the vacuum end, and the lower surface of the pressure end can be tightly attached to/away from the pressure end valve seat 7;
still be equipped with protection network 2 between vacuum end and the rain-proof cover 1, avoid birds to get into the influence and lead to the bite of vacuum end valve plate 9 or inefficacy.
The bottom of the pressure end is also provided with a guide rod 12, the guide rod 12 is arranged by being attached to the outer surface of the pressure end valve seat 7, and when the pressure end moves up and down, the guide rod 12 keeps the pressure end in the direction of moving up and down;
the pressure end valve seat 7 is connected with the pressure end through a limiting rope 3, one end of the limiting rope 3 is connected with the pressure end valve seat 10, and the other end of the limiting rope 3 is connected with the pressure end;
the pressure end is connected with the rain cover 1 through a connecting rod, and the other end of the limiting rope 3 can be connected with the connecting rod;
the pressure end comprises a pressure end valve plate 7, a diaphragm 6 and a counterweight 5, the diaphragm 6 is arranged on the upper surface of the pressure end valve plate 7, the counterweight 5 is arranged on the diaphragm 6 in an upward pressing mode, and the lower surface of the pressure end valve plate 7 is tightly attached to or away from a pressure end valve seat 10.
The pressure end valve plate 7 is provided with a first groove, and the diaphragm 6 is embedded in the first groove.
The pressure end valve plate 7 is provided with a 90-degree downward skirt; the 90 ° downward skirt design helps the pressure end valve plate opening height to 1/4 flow passage diameter after 10% overpressure, i.e. to reach maximum opening value.
The vacuum end includes vacuum disk seat 8, vacuum end valve plate 9, valve rod 11 and spring 4, and vacuum disk seat 8 is fixed mutually with the lower surface of pressure end valve plate 7, and vacuum end valve plate 9 passes through valve rod 11 and links to each other with vacuum disk seat 8, and the outside of valve rod 11 is equipped with spring 4 to realize that vacuum disk seat 8 and vacuum end valve plate 9 closely laminate/keep away from.
The bottom of the vacuum valve seat 8 is provided with a second groove, the vacuum end valve plate 9 is embedded in the second groove, and a sealing film is wrapped in the vacuum end valve plate 9.
Referring to fig. 1, a low pressure tank emergency pressure/vacuum relief valve as an embodiment of the present invention, referring to fig. 1, is formed by a combination of a diaphragm 6 and a pressure end valve plate 7 with a built-in groove design and a weight 5, wherein the weight 5 and the combined pressure end provide a downward force to sufficiently compress a pressure end valve seat 10 to form an effective seal. The protective net 2 and the spring 4 provide upward force, and the embedded groove design of the vacuum end valve plate 9 is lifted by the valve rod 11 and is fully compressed with the vacuum valve seat 8, so that effective sealing is formed.
Example 2
The structure of the present invention in embodiment 2 as shown in fig. 2 is the same as that in embodiment 1.
In example 2, the pressure side is open: that is, imbalance in pressure accumulation in the tank due to an emergency caused by a failure in operation or the like or a problem of external fire or the like.
The opening action of the emergency pressure/vacuum relief valve when the set pressure is reached is as follows: the pressure end is opened and lifted together and comprises a rainproof cover 1, a protective net 2, a limiting rope 3, a spring 4, a balance weight 5, a diaphragm 6 and a pressure end valve plate 7, and when the pressure is reduced to 90% of the set pressure, the pressure end returns to the seat again for sealing. The limiting rope 3 is used for preventing the excessive overpressure pressure end and the vacuum end assembly from separating from the pressure end valve seat. The pressure end and the vacuum end are taken down by unfastening the limiting rope 3, and the utility model can be used as a manhole for inspection and maintenance.
Example 3
The structure of the present invention in embodiment 3 as shown in fig. 3 is the same as that in embodiment 1.
In example 3, the vacuum side is open: namely, when the storage tank is discharged outwards at full speed due to operation errors or the outside of the storage tank is in high vacuum caused by the problems of temperature unbalance and the like in the storage tank due to overlarge rainfall.
The opening action of the emergency pressure/vacuum relief valve when the set vacuum value is reached is as follows: the vacuum side opening action, including the compression of the spring 4 and the downward movement of the vacuum side valve plate 9, begins to break the vacuum. The protective net 2 prevents dirt and birds from entering and influencing and causing the valve plate 9 at the vacuum end to be blocked or invalid. The vacuum end valve plate 9 lifts back to seat and seals when the vacuum pressure rises to 90% of the set vacuum.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It will be appreciated by persons skilled in the art that any combination of the elements of the utility model, including the details and embodiments of the utility model described in the foregoing description and illustrated in the accompanying drawings, is not to be considered as limiting the scope of the utility model and that the utility model is not limited to the details and arrangement of the parts so described and illustrated in the drawings so as not to obscure the utility model in any way. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. An emergency pressure/vacuum relief valve characterized by: including rain-proof cover, pressure end, vacuum end and pressure end valve seat, the vacuum end with rain-proof cover is fixed on the pressure end, rain-proof cover is established the outside of vacuum end, the lower surface of pressure end can closely laminate/keep away from pressure end valve seat.
2. The emergency pressure/vacuum relief valve according to claim 1, wherein: the pressure end comprises a pressure end valve plate, a diaphragm and a balance weight, the diaphragm is arranged on the upper surface of the pressure end valve plate, the balance weight is arranged on the diaphragm in an upward pressing mode, and the lower surface of the pressure end valve plate is tightly attached to/far away from the pressure end valve seat.
3. The emergency pressure/vacuum relief valve according to claim 2, wherein: the pressure end valve plate is provided with a first groove, and the diaphragm is embedded in the first groove.
4. The emergency pressure/vacuum relief valve according to claim 3, wherein: the pressure end valve plate is provided with a 90-degree downward skirt.
5. The emergency pressure/vacuum relief valve according to claim 4, wherein: the vacuum end comprises a vacuum valve seat, a vacuum end valve plate, a valve rod and a spring, the vacuum valve seat is fixed to the lower surface of the pressure end valve plate, the vacuum end valve plate is connected with the vacuum valve seat through the valve rod, and the spring is arranged outside the valve rod to realize that the vacuum valve seat is tightly attached to or away from the vacuum end valve plate.
6. The emergency pressure/vacuum relief valve according to claim 5, wherein: the bottom of the vacuum valve seat is provided with a second groove, and the vacuum end valve plate is embedded in the second groove.
7. The emergency pressure/vacuum relief valve according to claim 6, wherein: and a sealing film is wrapped in the vacuum end valve plate.
8. The emergency pressure/vacuum relief valve according to claim 7, wherein: and a protective net is also arranged between the vacuum end and the rain cover.
9. The emergency pressure/vacuum relief valve according to any one of claims 1 to 8, wherein: and a limiting rope is connected between the pressure end valve seat and the pressure end.
10. The emergency pressure/vacuum relief valve according to claim 9, wherein: the bottom of pressure end still is equipped with the guide bar, the guide bar laminating the surface setting of pressure end disk seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220551809.3U CN217030104U (en) | 2022-03-14 | 2022-03-14 | Emergency pressure/vacuum relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220551809.3U CN217030104U (en) | 2022-03-14 | 2022-03-14 | Emergency pressure/vacuum relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217030104U true CN217030104U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220551809.3U Active CN217030104U (en) | 2022-03-14 | 2022-03-14 | Emergency pressure/vacuum relief valve |
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| Country | Link |
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| CN (1) | CN217030104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059788A (en) * | 2022-08-18 | 2022-09-16 | 吴江天吴特种安全阀有限公司 | High emergency relief valve of security |
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2022
- 2022-03-14 CN CN202220551809.3U patent/CN217030104U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059788A (en) * | 2022-08-18 | 2022-09-16 | 吴江天吴特种安全阀有限公司 | High emergency relief valve of security |
| CN115059788B (en) * | 2022-08-18 | 2023-09-29 | 吴江天吴特种安全阀有限公司 | Emergency relief valve with high safety |
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