CN115451168A - Breather valve - Google Patents
Breather valve Download PDFInfo
- Publication number
- CN115451168A CN115451168A CN202210970995.9A CN202210970995A CN115451168A CN 115451168 A CN115451168 A CN 115451168A CN 202210970995 A CN202210970995 A CN 202210970995A CN 115451168 A CN115451168 A CN 115451168A
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- China
- Prior art keywords
- negative pressure
- shell
- valve cover
- positive pressure
- pressure valve
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- 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.)
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Classifications
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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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- 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
- F16K17/20—Excess-flow valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
A breather valve comprises a negative pressure valve cover and a positive pressure valve cover, wherein the negative pressure valve cover and the positive pressure valve cover are arranged in a storage tank body. The positive pressure valve cover and the negative pressure valve cover of the breather valve are arranged in the storage tank, so that the working environment of the positive pressure valve cover and the negative pressure valve cover is greatly improved, and the temperature of the top of the storage tank is usually above 0 ℃, so that the problem that the positive pressure valve cover and the negative pressure valve cover are frozen is fundamentally solved, and the breather valve can be fundamentally prevented from freezing.
Description
Technical Field
The invention relates to the field of storage tanks, in particular to a breather valve for a storage tank.
Background
The breather valve is a valve which can ensure that the storage tank space is isolated from the atmosphere within a certain pressure range and can be communicated with the atmosphere (breathe) when the pressure exceeds or is lower than the pressure range. The function of the device is to prevent the storage tank from being damaged due to overpressure or vacuum, and simultaneously, the evaporation loss of the stored liquid can be reduced. The breather valve is arranged, so that gas emission in the tank can be reduced, the pollution to the atmosphere is reduced, the storage tank can be prevented from being damaged due to overpressure or from being unstable due to ultra-vacuum, and certain promotion effect on safety and environmental protection is achieved.
The existing breather valve comprises a valve body, a positive pressure valve disc and a negative pressure valve disc, the whole breather valve is installed at the top of the storage tank, when the breather valve works for a long time in a low-temperature environment, the positive pressure valve cover and the negative pressure valve cover are easy to freeze and lose the mobility so as to cause the failure of the breather valve, and the storage tank has overpressure or is sucked to be shriveled. Therefore, the problem that the breather valve is easy to freeze in a low-temperature environment is fundamentally solved, and the safety operation of the storage tank is guaranteed.
Disclosure of Invention
The invention aims to solve the problem that a breather valve in the prior art cannot work in a low-temperature environment for a long time, and provides the breather valve for the storage tank, so that the breather valve cannot be frozen easily at low temperature and can work normally.
The technical problem of the invention is solved by the following technical scheme:
the utility model provides a breather valve, includes negative pressure valve gap, malleation valve gap, characterized by: the negative pressure valve cover and the positive pressure valve cover are arranged in the storage tank body.
As a priority scheme, the breather valve comprises an outer tank assembly and an inner tank assembly, wherein the outer tank assembly comprises an outer tank shell, a rainproof dustproof cap and a fire retardant plate, an outer breathing channel is formed in a space between the rainproof dustproof cap and the outer tank shell, and the fire retardant plate is arranged in the outer breathing channel and is communicated with an upper breathing channel in the outer tank shell through the fire retardant plate; the in-tank assembly comprises an in-tank shell, a gland, a negative pressure shell, a negative pressure valve cover, a positive pressure shell, a breathing tube and a positive pressure valve cover, wherein the negative pressure shell is arranged in the in-tank shell, the positive pressure shell is arranged in the negative pressure shell, and the bottom of the in-tank shell is connected with the bottom of the negative pressure shell through a sealing element; the negative pressure shell is connected and communicates by the several respiratory tube with the malleation shell, and malleation shell top sets up the through-hole, and the negative pressure valve gap is arranged in on the malleation shell top and is sealed the through-hole, and malleation shell bottom sets up down the through-hole, and the malleation valve gap is arranged in on the malleation shell bottom and seals down the through-hole, jar shell bottom links together and fixes on the respiratory opening of storage tank with jar shell top in.
As an optimization scheme, a detachable fire retardant plate is installed at an upper outlet of the outer tank shell, and the rainproof and dustproof cap is fixed on the outer tank shell through a support rod and the fire retardant plate or the support rod.
As an optimized scheme, the negative pressure shell comprises a negative pressure shell main body and a gland, the communicating hole is formed in the top of the negative pressure shell main body, and the gland is arranged on the top of the negative pressure shell main body and seals the communicating hole through the gland, so that the breathing valve is convenient to manufacture and install.
As an optimized scheme, the shell in the tank, the negative pressure shell and the positive pressure shell are arranged concentrically.
As an optimized scheme, the negative pressure valve cover moves up and down through the negative pressure valve cover guide mechanism, so that the negative pressure valve cover can move up and down stably to ensure that the negative pressure valve cover can reset.
As an optimized scheme, the negative pressure valve cover guiding mechanism comprises a gland sleeve and a negative pressure sleeve, the gland sleeve is arranged in the center of a gland, the lower portion of the gland sleeve is in threaded connection with the gland, the negative pressure sleeve is arranged in the center of the negative pressure valve cover, the lower portion of the negative pressure sleeve is in threaded connection with the negative pressure valve cover, and the upper portion of the negative pressure sleeve is nested in the gland sleeve. Thus, the negative pressure valve cover is guided by the negative pressure sleeve and the gland sleeve to stably move up and down.
As an optimized scheme, the positive pressure valve cover moves up and down through the positive pressure valve cover guide mechanism, so that the positive pressure valve cover can move up and down stably to ensure that the positive pressure valve cover can reset.
As an optimized scheme, the positive pressure valve cover guiding mechanism comprises a negative pressure sleeve and a positive pressure sleeve rod, the negative pressure sleeve is arranged in the center of the negative pressure valve cover, the lower portion of the negative pressure sleeve is in threaded connection with the negative pressure valve cover, the positive pressure sleeve rod is arranged in the center of the positive pressure valve cover, the lower portion of the positive pressure sleeve rod is in threaded connection with the positive pressure valve cover, and the upper portion of the positive pressure sleeve rod is nested in the negative pressure sleeve. Thus, the positive pressure valve cover is guided by the negative pressure sleeve and the positive pressure sleeve rod to stably move up and down.
As an optimization scheme, the edge of the positive pressure valve cover is further provided with a circle of boss A, the boss A is supported by the bottom of the positive pressure shell, so that the contact area between the positive pressure valve cover and the bottom of the positive pressure shell is reduced, the surface tension of a contact surface is reduced, the positive pressure valve cover acts more easily, and the pressure control is more accurate.
As an optimized scheme, a circle of boss B is further arranged on the edge of the negative pressure valve cover and supported by the top of the positive pressure shell, so that the contact area between the negative pressure valve cover and the top of the positive pressure shell is reduced, the surface tension of the contact surface is reduced, the negative pressure valve cover acts more easily, and the pressure control is more accurate.
As an optimization scheme, the outer ring of the outer shell of the tank and the outer ring of the inner shell of the tank are fixed on the breathing port flange on the top of the storage tank together through bolts, and the flanges are arranged on the breathing port flange neck of the storage tank, so that the installation is more convenient.
As an optimized scheme, the gland, the negative pressure valve cover and the positive pressure valve cover are all circular plates and are concentrically arranged, and the negative pressure valve cover is located on the upper part of the positive pressure shell and seals the upper through hole; the positive pressure valve cover is located at the bottom of the positive pressure shell and seals the lower through hole. The negative pressure valve cover and the positive pressure valve cover can only move upwards along the axial direction.
As an optimized scheme, a plurality of tear holes are formed in the annular sealing piece at the bottom of the breather valve, so that liquid accumulation in the lower breather passage is prevented, and the breather valve is more favorable for opening and closing.
The invention has the following effective effects: the positive pressure valve cover and the negative pressure valve cover of the breather valve are arranged in the storage tank, so that the working environment of the positive pressure valve cover and the negative pressure valve cover is greatly improved, and the temperature of the top of the storage tank is usually above 0 ℃, so that the problem that the positive pressure valve cover and the negative pressure valve cover are frozen is fundamentally solved, and the breather valve can be fundamentally prevented from freezing.
Drawings
Fig. 1 is a schematic structural section view of a breather valve according to an embodiment of the invention.
Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1.
Fig. 3 is a top view B-B of fig. 1.
FIG. 4 is a detailed view of the interior of a breather valve of the present invention.
Fig. 5 is an assembly view of the gland, the negative pressure valve cover and the positive pressure valve cover in the embodiment of the invention.
FIG. 6 is a diagram of a firestop plate support ring of the present invention secured within a tank shell.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the embodiment:
as shown in fig. 1-6, a breather valve includes an out-of-can assembly and an in-can assembly.
The outer tank assembly comprises an outer tank shell 20, a fire retardant plate 2 and a support rod 27. The detachable back-fire relief board 2 is equipped with in the export of jar shell 20 upper portion, and rain-proof dustproof cap 1 is connected and is fixed on jar shell 20 through bracing piece 27, specifically is: the lower end of the supporting rod 27 is welded on a fire retardant plate supporting ring 33, the fire retardant plate supporting ring 33 is fixed in an upper outlet of the tank outer shell 20 through a screw 34, the fire retardant plate 2 is arranged on the fire retardant plate supporting ring 33, the fire retardant plate 2 and a fire retardant plate gasket 32 are sleeved on the supporting rod 27 and are fixed through a nut E31, and the rainproof dustproof cap 1 is sleeved on the upper portion of the supporting rod 27 and is fixed through a nut D30.
The space formed between the rainproof and dustproof cap 1 and the outer tank shell 20 is an external breathing passage 28, a fire retardant plate 2 is arranged in the external breathing passage 28, the fire retardant plate 2 is communicated with the upper breathing passage 3 in the outer tank shell 20, and the fire retardant plate 2 can block flames from entering the storage tank. The specific position of the fire retardant plate 2 can be changed, and besides the arrangement in the outlet at the upper part of the outer shell 20 of the tank, the fire retardant plate can also be arranged between the rain-proof and dust-proof cap 1 and the outer shell 20 of the tank, and the like.
Of course, the support rod 27 may also be fixed to the tank outer case 20 and support the rain-proof and dust-proof cap 1 by other prior art means or conventional technical means or the tank outer case 20 directly supports the rain-proof and dust-proof cap 1, and will not be expanded in detail herein.
The in-tank assembly comprises an in-tank shell 9, a gland 4, a negative pressure shell main body 8, a negative pressure valve cover 16, a positive pressure shell 14, a breathing tube 10 and a positive pressure valve cover 12.
The top ends of the gland 4 and the negative pressure shell main body 8 are fixed by 3 evenly distributed bolts B5, the communicating hole 35 on the top end of the negative pressure shell main body 8 is sealed, the gland 4 and the negative pressure shell main body 8 are adopted to form a negative pressure shell so as to facilitate manufacturing and installation, and the gland 4 and the negative pressure shell main body 8 can also be integrated.
Negative pressure shell main part 8 positive pressure shell 14 is communicate and fixed by breathing pipe 10, and the annular space that negative pressure shell main part 8 inner wall and positive pressure shell 14 outer wall formed is negative pressure intake duct 29, and negative pressure intake duct 29 communicates with each other with storage tank inner space.
A gland sleeve 23 is arranged at the center of the gland 4, and the lower part of the gland sleeve 23 penetrates through the center of the gland 4 and is connected to the gland 4 in a threaded manner.
The negative pressure valve cover 16 and the negative pressure sleeve 24 are fixed through screw threads, and the upper part of the negative pressure sleeve 24 is nested in the gland sleeve 23.
The negative pressure valve cover 16 is supported by the top of the positive pressure case 14 and seals the upper through hole 141 of the top of the positive pressure case 14.
The positive pressure valve cover 12 is supported by the bottom of the positive pressure shell 14 and seals the lower through hole 142 in the bottom of the positive pressure shell 14.
The positive pressure valve cover 12 and the positive pressure loop bar 22 are fixed through a bolt C21, and the upper part of the positive pressure loop bar 22 is nested in the negative pressure sleeve 24.
The edge of the positive pressure valve cover 12 is also provided with a circle of boss A11, the boss A11 is supported by the bottom of the positive pressure shell 14, so that the contact area between the positive pressure valve cover 12 and the bottom of the positive pressure shell 14 is reduced, the surface tension of the contact surface is reduced, the positive pressure valve cover 12 acts more easily, and the pressure control is more accurate.
The edge of the negative pressure valve cover 16 is also provided with a circle of boss B15, and the boss B15 is supported by the top of the positive pressure shell 14, so that the contact area between the negative pressure valve cover 16 and the top of the positive pressure shell 14 is reduced, the surface tension of the contact surface is reduced, the negative pressure valve cover 16 acts more easily, and the pressure control is more accurate.
The gland 4, the negative pressure valve cover 16 and the positive pressure valve cover 12 are concentrically arranged along the central axis of the breathing valve, and because the gland 4, the negative pressure valve cover 16 and the positive pressure valve cover 12 are concentrically arranged along the axis of the breathing valve and the upper part of the positive pressure loop bar 22 is nested in the negative pressure sleeve 24 and the upper part of the negative pressure sleeve 24 is nested in the gland sleeve 23, the negative pressure valve cover 16 and the positive pressure valve cover 12 can only move upwards along the axis direction of the breathing valve, the stable movement of the negative pressure valve cover 16 and the positive pressure valve cover 12 is ensured, and the valve can be accurately reset under the normal condition of the breathing valve.
The outer ring of the bottom of the outer tank shell 20 and the outer ring of the top of the inner tank shell 9 are fixed on a breathing port flange 17 on the top of the storage tank together through a bolt A18, and the flange 17 is arranged on a breathing port flange neck 6 of the storage tank.
According to the breather valve, when the pressure in the storage tank is balanced with the atmospheric pressure, the negative pressure valve cover 16 is located on the upper through hole 141 by virtue of the gravity of the negative pressure valve cover, and the sealing is tight; the positive pressure valve cover 12 is seated on the through hole 142 by the self gravity and is tightly sealed; when the pressure of the storage tank exceeds the designed positive pressure, the positive pressure valve cover 12 is jacked upwards by the gas in the storage tank, the gas upwards enters the positive pressure cavity 13 through the lower through hole 142, enters the lower breathing passage 7 through the breathing tube 10, then upwards enters the upper breathing passage 3, and finally is discharged from the outer breathing passage 28 through the fire retardant plate, and the pressure of the storage tank and the atmospheric pressure reach a balanced state; when the pressure of the storage tank exceeds the designed negative pressure, the gas outside the storage tank enters the positive pressure cavity 13 in the positive pressure shell 14 through the outer breathing channel 28, the upper breathing channel 3 and the lower breathing channel 7 through the breathing pipe 10, the negative pressure valve cover 16 is jacked upwards by the gas, enters the negative pressure cavity 19 through the upper through hole 141, then enters the negative pressure channel 29 downwards and then enters the internal space of the storage tank, and the atmospheric pressure and the pressure of the storage tank are balanced.
Because the fire retardant board 2 of breather valve freezes to stifled in winter easily, considers the function of fire retardant board mainly to prevent summer thunderstorm weather, and lightning flame gets into the storage tank, can demolish it winter, later installs the breather valve again with it after winter.
The annular bottom of the breather valve is also provided with a plurality of tear holes 25, the tear holes are 3-5 mm in diameter and can be a plurality of, in this embodiment 4, the tear holes 25 are uniformly distributed on the annular sealing ring 26 at the bottom of the breather valve, so that the accumulated liquid in the breathing passage 7 under the storage tank can drop back to the storage tank through the tear holes 25, the accumulated liquid in the breathing passage 7 is effectively prevented from flowing down, and the storage tank is particularly important for the storage tank with more water vapor in the storage medium.
In this embodiment, the number of the breathing tubes 10 communicating the negative pressure casing main body 8 and the positive pressure casing 14 is 2, or 2 or more.
In this embodiment, the gland 4 and the gland sleeve 23, the negative pressure valve cover 16 and the negative pressure sleeve 24, and the positive pressure valve cover 12 and the positive pressure sleeve rod 22 are all fixed by screw threads, so that the mounting and dismounting are convenient, and the fixing can be realized by a pipe expanding means.
In this embodiment, the supporting rod 27 and the supporting ring 33 of the fire retardant plate are welded and fixed, and other fixing methods can be adopted.
Claims (10)
1. The utility model provides a breather valve, its includes negative pressure valve gap, malleation valve gap, characterized by: the negative pressure valve cover and the positive pressure valve cover are arranged in the storage tank body.
2. The breather valve according to claim 1, wherein: the breather valve comprises an outer tank component and an inner tank component, the outer tank component comprises an outer tank shell, a rainproof dustproof cap and a fire retardant plate, an outer breathing channel is formed in a space between the rainproof dustproof cap and the outer tank shell, and the fire retardant plate is arranged in the outer breathing channel and communicated with an upper breathing channel in the outer tank shell through the fire retardant plate; the in-tank assembly comprises an in-tank shell, a gland, a negative pressure shell, a negative pressure valve cover, a positive pressure shell, a breathing tube and a positive pressure valve cover, wherein the negative pressure shell is arranged in the in-tank shell, the positive pressure shell is arranged in the negative pressure shell, and the bottom of the in-tank shell is connected with the bottom of the negative pressure shell through a sealing element; the negative pressure shell is connected and communicates by the several respiratory tube with the malleation shell, and malleation shell top sets up the through-hole, and the negative pressure valve gap is arranged in on the malleation shell top and is sealed the through-hole, and malleation shell bottom sets up down the through-hole, and the malleation valve gap is arranged in on the malleation shell bottom and seals down the through-hole, jar shell bottom links together and fixes on the respiratory opening of storage tank with jar shell top in.
3. The breather valve according to claim 2, wherein: the detachable fire retardant plate is installed at the outlet of the upper part of the outer shell of the tank, and the rainproof and dustproof cap is fixed on the outer shell of the tank through the supporting rod and the fire retardant plate or the supporting rod.
4. The breather valve according to claim 2, wherein: the negative pressure shell comprises a negative pressure shell main body and a gland, wherein a communication hole is formed in the top of the negative pressure shell main body, and the gland is arranged on the top of the negative pressure shell main body and seals the communication hole through the gland.
5. A breathing valve according to claim 2, characterised in that: the negative pressure valve cover moves up and down through the negative pressure valve cover guide mechanism.
6. The breather valve according to claim 5, wherein: the negative pressure valve cover guiding mechanism comprises a gland sleeve and a negative pressure sleeve, the gland sleeve is arranged at the center of a gland, the lower part of the gland sleeve is in threaded connection with the gland, the negative pressure sleeve is arranged at the center of the negative pressure valve cover, the lower part of the negative pressure sleeve is in threaded connection with the negative pressure valve cover, and the upper part of the negative pressure sleeve is nested in the gland sleeve.
7. The breather valve according to claim 2, wherein: the positive pressure valve cover moves up and down through the positive pressure valve cover guide mechanism.
8. The breather valve according to claim 7, wherein: the positive pressure valve cover guiding mechanism comprises a negative pressure sleeve and a positive pressure loop bar, the negative pressure sleeve is arranged at the center of the negative pressure valve cover, the lower part of the negative pressure sleeve is in threaded connection with the negative pressure valve cover, the positive pressure loop bar is arranged at the center of the positive pressure valve cover, the lower part of the positive pressure loop bar is in threaded connection with the positive pressure valve cover and is fixed, and the upper part of the positive pressure loop bar is nested in the negative pressure loop bar.
9. The breather valve according to claim 2, wherein: the edge of the positive pressure valve cover is further provided with a circle of boss A, the boss A is supported by the bottom of the positive pressure shell, the edge of the negative pressure valve cover is further provided with a circle of boss B, and the boss B is supported by the top of the positive pressure shell.
10. A breathing valve according to claim 2, characterised in that: the annular sealing piece at the bottom of the breather valve is provided with a plurality of tear holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210970995.9A CN115451168A (en) | 2022-08-14 | 2022-08-14 | Breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210970995.9A CN115451168A (en) | 2022-08-14 | 2022-08-14 | Breather valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115451168A true CN115451168A (en) | 2022-12-09 |
Family
ID=84297700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210970995.9A Pending CN115451168A (en) | 2022-08-14 | 2022-08-14 | Breather valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115451168A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951146A (en) * | 2023-09-21 | 2023-10-27 | 陕西皓疆图南能源科技有限公司 | Anti-freezing and breathing resistance integrated breather valve and application thereof |
-
2022
- 2022-08-14 CN CN202210970995.9A patent/CN115451168A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951146A (en) * | 2023-09-21 | 2023-10-27 | 陕西皓疆图南能源科技有限公司 | Anti-freezing and breathing resistance integrated breather valve and application thereof |
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