CN108167489B - Anti-freezing and anti-sticking breather valve - Google Patents
Anti-freezing and anti-sticking breather valve Download PDFInfo
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- CN108167489B CN108167489B CN201711279394.9A CN201711279394A CN108167489B CN 108167489 B CN108167489 B CN 108167489B CN 201711279394 A CN201711279394 A CN 201711279394A CN 108167489 B CN108167489 B CN 108167489B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
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Abstract
The invention relates to an anti-freezing and anti-sticking breather valve, which mainly solves the problem that the traditional breather valve cannot work in a low-temperature environment for a long time and comprises an exhalation valve arranged at the outer end of an exhalation channel and an inhalation valve arranged in the inhalation channel, wherein the exhalation valve comprises a first valve disc, a first valve cover, a first guide rod mechanism and a first sealing seat; the suction valve comprises a second valve disc, a guide rod mechanism and a second sealing seat, wherein the second guide rod mechanism comprises a second guide rod chassis and a second guide rod column, and one end of the second guide rod column is vertically and fixedly connected to the second guide rod chassis. The breather valve has good sealing performance, can be used in a low-temperature environment for a long time, effectively solves the problems that the breather valve is easy to freeze and adhere in the low-temperature environment, and has important significance for the safe operation of an oil tank.
Description
Technical Field
The invention relates to the technical field of petroleum equipment, in particular to an anti-freezing and anti-sticking breather valve.
Background
The oil tank breather valve utilizes the pressure bearing capacity of the storage tank to reduce medium discharge, and the principle of the breather valve is to utilize the weight of a positive-negative pressure valve disc to control the positive exhaust pressure and the negative suction pressure of the storage tank. When the breather valve works in a low-temperature environment for a long time, the breather valve is easy to freeze and adhere after being used for a long time, and when the breather valve is serious, the breather valve is frozen and fails, so that the oil tank is in danger of being deflated after being sucked. Therefore, the problem that the breather valve is easy to freeze and is easy to be bonded is fundamentally solved, and the breather valve has important significance for normal work of the breather valve and safe operation of the oil tank.
Patent specification No. 200910095574.0 entitled "a breather valve" discloses a breather valve which is only suitable for use in a normal temperature environment and cannot operate in a low temperature environment for a long time.
Disclosure of Invention
The invention mainly solves the problem that a breather valve in the prior art cannot work in a low-temperature environment for a long time, and provides an anti-freezing and anti-sticking breather valve.
The technical problem of the invention is mainly solved by the following technical scheme: an anti-freezing and anti-sticking breather valve comprises an exhalation valve arranged at the outer end of an exhalation passage and an inhalation valve arranged in an inhalation passage, wherein the exhalation valve comprises a first valve disc, a first valve cover arranged above the first valve disc, a first guide rod mechanism arranged in the first valve disc and a first sealing seat arranged at the periphery of the bottom of the first valve disc, the first guide rod mechanism comprises a first guide rod chassis arranged in the first valve disc and a first guide rod column, one end of the first guide rod column is vertically and fixedly connected to the first guide rod chassis, and the other end of the first guide rod column is fixed on the valve cover; the suction valve comprises a second valve disc, a second guide rod mechanism arranged in the second valve disc and a second sealing seat arranged on the periphery of the bottom of the second valve disc, the second guide rod mechanism comprises a second guide rod base disc arranged in the second valve disc and a second guide rod column, one end of the second guide rod column is vertically and fixedly connected to the second guide rod base disc, and the other end of the second guide rod column is fixed on the suction channel.
According to the anti-freezing and anti-sticking breather valve, when the pressure in the storage tank is balanced with the atmospheric pressure, the two valve discs are tightly matched with the sawtooth-shaped sealing seats. When the pressure of the storage tank exceeds the atmospheric pressure value (namely, excessive positive pressure is generated), the high pressure in the tank directly acts on the lower part of the breathing valve disc, overcomes the gravity of the valve disc and the external air pressure acting on the valve disc, and the inner part of the valve disc stably rises through the contact of the guide rod chassis, so that the breathing valve disc is opened to discharge the excessive air pressure in the tank through the expiration channel, and the pressure in the tank is kept balanced with the atmospheric pressure. When the pressure in the storage tank is lower than the atmospheric pressure value (i.e. generating too low negative pressure), the atmospheric pressure enters through the air suction channel and directly acts on the lower part of the valve disc of the suction inlet, overcomes the gravity of the valve disc and the tank pressure acting on the upper part of the valve disc, the inner part of the valve disc is contacted and stabilized through the guide rod chassis, so that the valve disc of the suction inlet is opened to supplement the pressure in the storage tank, and the tank pressure and the atmospheric pressure are kept balanced.
Preferably, the first valve disc and the second valve disc are hollow discs.
As a preferred scheme, four first guide rod holes protruding outwards are uniformly arranged in the circumferential direction of the top surface of the first valve disc, four second guide rod holes protruding outwards are uniformly arranged in the circumferential direction of the top surface of the second valve disc, the diameter of each first guide rod hole is larger than that of each first guide rod column, the diameter of each second guide rod hole is larger than that of each second guide rod column, and when the valve disc slides up and down, the guide rod holes of the valve disc are not in contact with the guide rod columns, so that the valve disc is prevented from being frozen due to freezing of water vapor on the wall of each guide rod column and the wall of each guide rod column in a low-temperature environment, and a bonding fault valve disc is guaranteed not to occur.
Preferably, the first valve disc and the second valve disc are filled with 0W type lubricating oil, and the lubricating oil can maintain good fluidity even at low temperature.
As a preferable scheme, the injection amount of the 0W-shaped lubricating oil is that the oil level just exceeds the positions of the first guide rod chassis and the first guide rod chassis, so that the water on the inner wall of the valve disc and the outer edge of the guide rod chassis is completely eradicated, and the low-temperature icing between the valve disc and the guide rod chassis can be avoided.
As a preferable scheme, the circle center connecting line of the disks on the bottom surfaces of the first valve disk and the second valve disk and the disk on the top surface of the valve disk is perpendicular to the bottom surface of the valve disk, the diameter of the disk on the bottom surface of the valve disk is smaller than that of the disk on the top surface of the valve disk, and the right angle is formed at the connecting part of the disk on the bottom surface of the valve disk and the disk on the top surface of the valve disk, so that the connecting. Compare conventional breather valve, the valve disc pastes with the seal receptacle plane mutually, and its leakproofness can more be guaranteed to this type of laminating mode.
As a preferable scheme, the outer diameter of the first guide rod chassis is smaller than the inner diameter of the first valve disc by 2 cm, the outer diameter of the second guide rod chassis is smaller than the inner diameter of the second valve disc by 2 cm, and rubber rings with the thickness of 1 cm are wrapped on the outer edges of the first guide rod chassis and the second guide rod chassis, so that the whole guide rod chassis is matched with the inner wall of the valve disc.
As a preferred scheme, a plurality of round holes are formed in the first guide rod base plate and the second guide rod base plate, so that the resistance of liquid to the guide rod base is reduced, and the whole valve disc can move up and down along the outer wall of the base plate under the action of the air pressure in the storage tank.
As a preferred scheme, the first sealing seat and the second sealing seat are annular, and a plurality of sawteeth are arranged on the inner side and the upper side of the annular, so that the contact area between the sealing seats and the valve disc is reduced, and the inner side and the upper side of the sealing seats are simultaneously contacted with the valve disc, so that the closure of the breather valve is further ensured; meanwhile, when water drops appear on the upper side and the inner side of the sealing seat, the water drops on the upper side can directly flow into the groove, and the water drops on the lower side can also flow down along the sawtooth-shaped groove. The sealing seat is designed to be serrated, so that the contact area between the sealing seat and the valve disc is reduced, and the freezing and bonding faults can be effectively avoided.
Preferably, the exhalation valve is fixed on the exhalation passage through a fastening bolt penetrating through the outer end of the first valve cover, so that the whole exhalation valve is fixed on the exhalation passage.
Therefore, the invention has the advantages that: the breather valve has good sealing performance, can be used in a low-temperature environment for a long time, effectively solves the problems that the breather valve is easy to freeze and adhere in the low-temperature environment, and has important significance for the safe operation of an oil tank.
Drawings
FIG. 1 is a cross-sectional view of an overall construction of the present invention;
FIG. 2 is a top view of the first valve disc of the present invention;
fig. 3 is a top view of the first guide bar mechanism of the present invention.
1-first valve cover 2-first guide rod column 3-first guide rod chassis 4-rubber ring 5-first guide rod hole 6-first valve disc 7-fastening bolt 8-first seal seat 9-expiration channel 10-inspiration channel 11-second guide rod column 12-second guide rod chassis 13-second seal seat 14-second valve disc 15-second guide rod hole 16-round hole 17-0W type lubricating oil.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b):
the anti-freezing and anti-sticking breather valve comprises an exhalation valve arranged at the outer end of an exhalation passage 9 and an inhalation valve arranged in an inhalation passage 10, as shown in fig. 1, fig. 2 and fig. 3, wherein the exhalation valve comprises a first valve disc 6, a first valve cover 1 arranged above the first valve disc, a first guide rod mechanism arranged in the first valve disc and a first sealing seat 8 arranged at the periphery of the bottom of the first valve disc, the first guide rod mechanism comprises a first guide rod chassis 3 arranged in the first valve disc and a first guide rod column 2 with one end vertically and fixedly connected to the first guide rod chassis, and the other end of the first guide rod column is fixed on the valve cover; the suction valve comprises a second valve disc, a second guide rod mechanism arranged in the second valve disc and a second sealing seat 13 arranged on the periphery of the bottom of the second valve disc, the second guide rod mechanism comprises a second guide rod base plate arranged in a second valve disc 14 and a second guide rod column 11, one end of the second guide rod column is vertically and fixedly connected to the second guide rod base plate 12, and the other end of the second guide rod column is fixed on a suction channel.
According to the anti-freezing and anti-sticking breather valve, when the pressure in the storage tank is balanced with the atmospheric pressure, the two valve discs are tightly matched with the sawtooth-shaped sealing seats. When the pressure of the storage tank exceeds the atmospheric pressure value (namely, excessive positive pressure is generated), the high pressure in the tank directly acts on the lower part of the breathing valve disc, overcomes the gravity of the valve disc and the external air pressure acting on the valve disc, and the inner part of the valve disc stably rises through the contact of the guide rod chassis, so that the breathing valve disc is opened to discharge the excessive air pressure in the tank through the expiration channel, and the pressure in the tank is kept balanced with the atmospheric pressure. When the pressure in the storage tank is lower than the atmospheric pressure value (i.e. generating too low negative pressure), the atmospheric pressure enters through the air suction channel and directly acts on the lower part of the valve disc of the suction inlet, overcomes the gravity of the valve disc and the tank pressure acting on the upper part of the valve disc, the inner part of the valve disc is contacted and stabilized through the guide rod chassis, so that the valve disc of the suction inlet is opened to supplement the pressure in the storage tank, and the tank pressure and the atmospheric pressure are kept balanced.
Specifically, the top view of the second valve disc is similar to the top view of the first valve disc, and the top view of the second guide rod mechanism is similar to the top view of the first guide rod mechanism, so only the top view of the first valve disc and the top view of the second guide rod mechanism will be described in detail.
The first valve disc and the second valve disc are hollow discs, four first guide rod holes 5 protruding outwards are evenly formed in the circumferential direction of the top surface of the first valve disc, four second guide rod holes 15 protruding outwards are evenly formed in the circumferential direction of the top surface of the second valve disc, the diameter of each first guide rod hole is larger than that of each first guide rod column, the diameter of each second guide rod hole is larger than that of each second guide rod column, when the valve disc slides up and down, the guide rod holes of the valve disc do not contact with the guide rod columns, the purpose of preventing the wall of each guide rod hole and the wall of each guide rod column in a low-temperature environment from being frozen due to freezing of water vapor, and the adhesion failure is avoided.
0W-shaped lubricating oil 17 is injected into the first valve disc and the second valve disc, the lubricating oil can keep good fluidity under the condition of low temperature, the injection amount of the 0W-shaped lubricating oil is that the oil level just exceeds the positions of the first guide rod chassis and the first guide rod chassis, the moisture on the inner wall of the valve disc and the outer edge of the guide rod chassis is avoided, and the low-temperature icing condition between the valve disc and the guide rod chassis can be avoided.
The circle center connecting line of the bottom disc of the first valve disc and the bottom disc of the second valve disc and the top disc of the valve disc is perpendicular to the bottom surface of the valve disc, the diameter of the bottom disc of the valve disc is smaller than that of the top disc of the valve disc, and the right angle is formed at the connecting part of the bottom disc of the valve disc and the top disc, so that the bottom disc of the valve disc and the sealing seat below the bottom disc of the valve disc. Compare conventional breather valve, the valve disc pastes with the seal receptacle plane mutually, and its leakproofness can more be guaranteed to this type of laminating mode.
The outer diameter of the first guide rod chassis is smaller than the inner diameter of the first valve disc by 2 cm, the outer diameter of the second guide rod chassis is smaller than the inner diameter of the second valve disc by 2 cm, and rubber rings 4 with the thickness of 1 cm are wrapped on the outer edges of the first guide rod chassis and the second guide rod chassis, so that the whole guide rod chassis is matched with the inner wall of the valve disc.
The first guide rod base plate and the second guide rod base plate are respectively provided with a plurality of round holes 16, so that the resistance of liquid to the guide rod base is reduced, and the whole valve disc can move up and down along the outer wall of the base plate under the action of the air pressure in the storage tank.
The first sealing seat and the second sealing seat are annular, and a plurality of sawteeth are arranged on the inner side and the upper side of the annular, so that the contact area between the sealing seat and the valve disc is reduced, and the inner side and the upper side of the sealing seat are simultaneously contacted with the valve disc, so that the sealing property of the breather valve is further ensured; meanwhile, when water drops appear on the upper side and the inner side of the sealing seat, the water drops on the upper side can directly flow into the groove, and the water drops on the lower side can also flow down along the sawtooth-shaped groove. The sealing seat is designed to be serrated, so that the contact area between the sealing seat and the valve disc is reduced, and the freezing and bonding faults can be effectively avoided.
The exhalation valve is fixed on the exhalation channel through a fastening bolt 7 penetrating through the outer end of the first valve cover, so that the whole exhalation valve is fixed on the exhalation channel.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms rotor, valve disc, exhalation passages, sealing rings, rubber rings are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. An anti-freezing and anti-sticking breather valve comprises an exhalation valve arranged at the outer end of an exhalation passage and an inhalation valve arranged in an inhalation passage, and is characterized in that the exhalation valve comprises a first valve disc, a first valve cover arranged above the first valve disc, a first guide rod mechanism arranged in the first valve disc and a first sealing seat arranged at the periphery of the bottom of the first valve disc, the first guide rod mechanism comprises a first guide rod chassis arranged in the first valve disc and a first guide rod column, one end of the first guide rod column is vertically and fixedly connected to the first guide rod chassis, and the other end of the first guide rod column is fixed on the valve cover; the suction valve comprises a second valve disc, a second guide rod mechanism arranged in the second valve disc and a second sealing seat arranged on the periphery of the bottom of the second valve disc, the second guide rod mechanism comprises a second guide rod base disc arranged in the second valve disc and a second guide rod column, one end of the second guide rod column is vertically and fixedly connected to the second guide rod base disc, and the other end of the second guide rod column is fixed on the suction channel.
2. The anti-freeze anti-sticking breather valve of claim 1 wherein said first and second valve disks are hollow disks.
3. The anti-freezing and anti-sticking breather valve as claimed in claim 1, wherein the first valve disk top surface is uniformly provided with four first guide rod holes protruding outwards in the circumferential direction, the second valve disk top surface is uniformly provided with four second guide rod holes protruding outwards in the circumferential direction, the diameter of the first guide rod hole is larger than that of the first guide rod column, and the diameter of the second guide rod hole is larger than that of the second guide rod column.
4. The anti-freezing and anti-sticking breather valve according to claim 1, wherein the first valve disc and the second valve disc are filled with 0W type lubricating oil.
5. The anti-freezing and anti-sticking breather valve according to claim 4, wherein the injection amount of the 0W type lubricating oil is the position of the oil level just exceeding the bottom plate of the first guide rod.
6. The anti-freezing and anti-sticking breather valve as claimed in claim 2, wherein a circle center connecting line of the disk on the bottom surface of the valve disk and the disk on the top surface of the valve disk of the first valve disk and the second valve disk is perpendicular to the bottom surface of the valve disk, the diameter of the disk on the bottom surface of the valve disk is smaller than that of the disk on the top surface of the valve disk, and a joint of the disk on the bottom surface of the valve disk and the disk.
7. The anti-freezing and anti-sticking breather valve as claimed in claim 1, wherein the outer diameter of the first guide rod base plate is less than 2 cm of the inner diameter of the first valve disk, the outer diameter of the second guide rod base plate is less than 2 cm of the inner diameter of the second valve disk, and the outer edges of the first guide rod base plate and the second guide rod base plate are wrapped with a rubber ring with the thickness of 1 cm.
8. The anti-freezing and anti-sticking breather valve as recited in claim 7, wherein the first guide rod base plate and the second guide rod base plate are provided with a plurality of circular holes.
9. The anti-freezing and anti-sticking breather valve according to claim 1, wherein the first sealing seat and the second sealing seat are circular rings, and a plurality of saw teeth are arranged on the inner side and the upper side of the circular rings.
10. The anti-freezing and anti-sticking breather valve according to claim 1, wherein the exhalation valve is fixed to the exhalation passage by a fastening bolt passing through an outer end of the first valve cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711279394.9A CN108167489B (en) | 2017-12-06 | 2017-12-06 | Anti-freezing and anti-sticking breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711279394.9A CN108167489B (en) | 2017-12-06 | 2017-12-06 | Anti-freezing and anti-sticking breather valve |
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| Publication Number | Publication Date |
|---|---|
| CN108167489A CN108167489A (en) | 2018-06-15 |
| CN108167489B true CN108167489B (en) | 2020-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711279394.9A Active CN108167489B (en) | 2017-12-06 | 2017-12-06 | Anti-freezing and anti-sticking breather valve |
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| Country | Link |
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| CN (1) | CN108167489B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112013143B (en) * | 2019-05-30 | 2022-05-24 | 中国石油化工股份有限公司 | Fire-retardant type breather valve for stratum water storage tank |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2150413Y (en) * | 1993-03-23 | 1993-12-22 | 中国石化北京设计院 | Fire-retardant breather valve for oil tank |
| KR101380829B1 (en) * | 2012-10-25 | 2014-04-04 | 주식회사 탑세이프 | Vacuum relief valve |
| CN104930231A (en) * | 2015-06-02 | 2015-09-23 | 精凯(天津)阀门制造有限公司 | Pressure vacuum relief valve |
| CN204942668U (en) * | 2015-09-17 | 2016-01-06 | 罗浮阀门集团有限公司 | A kind of fire-retardant breather valve |
-
2017
- 2017-12-06 CN CN201711279394.9A patent/CN108167489B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2150413Y (en) * | 1993-03-23 | 1993-12-22 | 中国石化北京设计院 | Fire-retardant breather valve for oil tank |
| KR101380829B1 (en) * | 2012-10-25 | 2014-04-04 | 주식회사 탑세이프 | Vacuum relief valve |
| CN104930231A (en) * | 2015-06-02 | 2015-09-23 | 精凯(天津)阀门制造有限公司 | Pressure vacuum relief valve |
| CN204942668U (en) * | 2015-09-17 | 2016-01-06 | 罗浮阀门集团有限公司 | A kind of fire-retardant breather valve |
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| CN108167489A (en) | 2018-06-15 |
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