CN209041679U - A kind of antifreeze crystallization-preventive breather valve of diaphragm type - Google Patents
A kind of antifreeze crystallization-preventive breather valve of diaphragm type Download PDFInfo
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- CN209041679U CN209041679U CN201821361626.5U CN201821361626U CN209041679U CN 209041679 U CN209041679 U CN 209041679U CN 201821361626 U CN201821361626 U CN 201821361626U CN 209041679 U CN209041679 U CN 209041679U
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- breather valve
- pressure chamber
- lower case
- valve
- upper housing
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Abstract
The utility model discloses a kind of antifreeze crystallization-preventive breather valves of diaphragm type, including breather valve upper housing, breather valve upper housing bottom is provided with breather valve lower case, vacuum chamber is formed between the breather valve upper housing and breather valve lower case, the vacuum chamber is provided with vacuum chamber valve disc, vacuum chamber valve disc bottom is provided with polymer separators, breather valve upper housing two sides are just provided with pressure chamber, pressure chamber liquid injection port back-fire relief disk is provided at the top of the pressure chamber, the pressure chamber side is provided with liquid level window, the pressure chamber side offers pressure chamber liquid injection port, the pressure chamber is internally provided with anti-icing fluid.The utility model is by being equipped with polymer separators, polymer separators are made to play the role of sealing, it solves the icing and crystallisation problems of oil gas or steam between conventional valve disc and valve seat, breather valve is enable to accomplish not freezing substantially and do not crystallize, the valve that ensures respiration ventilation is unimpeded and normally-open.
Description
Technical field
The utility model relates to breather valve equipment technical field, in particular to a kind of antifreeze crystallization-preventive breather valve of diaphragm type.
Background technique
The main application of breather valve be set at storage tube top portion, guarantee basin space within the scope of certain pressure with big air bound
Absolutely, a kind of valve of (breathing) can be communicated with atmosphere when above or below this pressure limit again.Common gravity breather valve one
As be made of pressure chamber and vacuum chamber two parts, pressure chamber and vacuum chamber are separated by valve disc.When gas pressure is greater than in tank body
When external atmospheric pressure, the valve disc of vacuum chamber is compressed by gas in tank at this time, and gas pressure is greater than on the outside of tank on the inside of pressure chamber tank
Gas pressure, then the valve disc of pressure chamber is jacked up by gas pressure in tank, and gas is discharged into outside air.When gas pressure outside tank body
Power is greater than gas pressure in tank body, and the outer atmosphere lateral pressure of pressure chamber vacuum chamber tank is higher than atmospheric side in vacuum chamber tank, then vacuum chamber
Valve disc is jacked up by atmosphere outside tank, and gas enters in tank, so that tank internal and external pressure balance.
Domestic Petrochemical Enterprises are generally all located at the position by inshore or great rivers, therefore tank field is it is also apparent that be to lean on
These nearly moist places.For winter nocturnal temperature is lower than -30 DEG C of extremely frigid zones tank field, winter environment it is not only cold but also
Wet, there is icing phenomenon in winter in the breathing valve surface be easy to causeing on storage tank.Simultaneously as the reduction of environment temperature, material are molten
The saturated concentration of liquid continues to decline, and material crystal also easily generates crystalline polamer in valve surface.
Gas and liquid increase, tank on daytime because of sunlit effect and the raising of ambient air temperature in storage tank
Interior gas volume expands therewith, and breather valve guarantees that excess pressure gas can be discharged in time in tank, tank body is not in exhaled gas on daytime
It is deformed because of hypertonia.Simultaneously in night, environment temperature decline, the contraction of tank body gas volume, breather valve sucking gas, balance
Tank body external and internal pressure.Because the process that gas expands with heat and contract with cold in tank is all occurring daily, then the valve disc of breather valve is needed normally to open
Closing function must be guaranteed, and ventilatory capacity cannot be below design value.The icing of breather valve and crystalline polamer cause valve disc matter
Amount increases, so that perhaps vacuum chamber valve disc cracking pressure increases when gas expansion in tank or contraction pressure chamber, reaches valve disc
When designing cracking pressure, valve disc is not turned on, prevent gas causes tank body swollen from being discharged or the outer gas of tank cannot suck in tank
Swollen or contraction distortion.The icing and crystallization of valve cause valve gas passage to block simultaneously, the decline of breather valve ventilatory capacity, tank body
It will also result in tank body in exhalation or suction process by the speed decline that breather valve exhalation perhaps sucks gas to deform.
In addition, freezing when the injecting material in storage tank and crystallization also easily causing breather valve that cannot open and ventilate in time
Amount decline, therefore tank inside gas pressure increases, and storage tank expands；When fluid removal in storage tank, gas in storage tank
Pressure decline is very fast, and breather valve cannot normally suck outside air, generate larger negative pressure in tank, and tank body is because negative pressure is pressed in tank
Flat, material in tank overflows.
In addition, the dew-point temperature of oil gas and steam is tapped with atmospheric temperature ten at this time when winter outside air temperature is too low
Closely, oil gas or steam are easy to condense in valve inner, when containing acidic materials in the liquid of condensation, then can generate dew point
Corrosion, causes breather valve to damage.
Therefore, it is necessary to solve the above problems to invent a kind of antifreeze crystallization-preventive breather valve of diaphragm type.
Utility model content
The purpose of this utility model is to provide a kind of antifreeze crystallization-preventive breather valve of diaphragm type, by be equipped with macromolecule every
Film makes polymer separators play the role of sealing, solves the icing of oil gas or steam and knot between conventional valve disc and valve seat
Brilliant problem enables breather valve to accomplish not freezing substantially and do not crystallize, and the valve that ensures respiration ventilation is unimpeded and normally-open, in solution
State the problem of proposing in background technique.
To achieve the above object, the utility model provides the following technical solutions: a kind of antifreeze crystallization-preventive breather valve of diaphragm type,
Including breather valve upper housing, breather valve upper housing bottom is provided with breather valve lower case, the breather valve upper housing with exhale
It inhales and forms vacuum chamber between valve lower case, the vacuum chamber is provided with vacuum chamber valve disc, and vacuum chamber valve disc bottom is set
Polymer separators are equipped with, breather valve upper housing two sides are just provided with pressure chamber, are provided with pressure chamber at the top of the pressure chamber
Liquid injection port back-fire relief disk, the pressure chamber side are provided with liquid level window, and the pressure chamber side offers pressure chamber liquid injection port, institute
It states pressure chamber and is internally provided with anti-icing fluid, the anti-icing fluid is internally provided with liquid level float.
Preferably, the breather valve lower case inner wall is provided with vacuum chamber gas inlet and outlet, breather valve lower case bottom
Portion is provided with lower case flange.
Preferably, the breather valve lower case includes lower case internal layer and lower casing volume surrounding, and the lower case internal layer is under
Shell outer top forms pressure chamber gas inlet and outlet.
Preferably, the pressure chamber gas inlet and outlet is internally provided with back-fire relief disk, the breather valve lower case and lower case
Support column is connected between flange.
Preferably, diaphragm perforation, the pressure chamber are offered between the pressure chamber gas inlet and outlet and polymer separators
Discharge outlet is offered between gas inlet and outlet, lower casing volume surrounding and polymer separators.
Preferably, hinged between the breather valve upper housing and breather valve lower case, the breather valve upper housing and breathing
It is bolted between valve lower case, the breather valve upper housing is the double-deck setting.
The technical effect and advantage of the utility model:
1, by being equipped with vacuum chamber valve disc, be conducive to need two panels valve disc and valve disc guide rod by traditional breather valve, to valve
The requirement on machining accuracy of disk and valve disc guide rod is high, and this structure is lower to the requirement on machining accuracy of valve disc, can reduce cost；
2, it is to be bolted by the upper housing of breather valve and lower case, is conducive to after polymer separators aging, it can be with
Directly replace；
3, by being equipped with polymer separators, mechanical structure is effectively reduced, prevents winter from condensing in metal surface, shape
At dew point corrosion；
4, anti-icing fluid volume adjustment is passed through by the engaging pressure of polymer separators.According to tank outlet pipe diameter and open
Pressure is closed, calculates and needs increased anti-icing fluid volume；
5, it by being equipped with anti-icing fluid, is beneficial to prevent and condenses or freeze in membrane surface, guarantee to breathe under winter low temperature
Valve can also work normally.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the overall structure operation schematic diagram of the utility model.
Fig. 3 is the breather valve upper housing structure top view of the utility model.
Fig. 4 is the breather valve lower case structural schematic diagram of the utility model.
In figure: 1 breather valve upper housing, 2 breather valve lower cases, 3 vacuum chambers, 4 vacuum chamber valve discs, 5 polymer separators, 6 pressures
Power chamber, 7 pressure chamber liquid injection port back-fire relief disks, 8 liquid level windows, 9 pressure chamber liquid injection ports, 10 anti-icing fluid, 11 liquid level floats, 12 vacuum chambers
Gas inlet and outlet, 13 lower case flanges, 14 lower case internal layers, 15 lower casing volume surroundings, 16 pressure chamber gas inlet and outlets, 17 back-fire reliefs
Disk, 18 support columns, 19 diaphragm perforations, 20 discharge outlets.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of antifreeze crystallization-preventive breather valve of diaphragm type as shown in Figs 1-4, including on breather valve
Shell 1,1 bottom of breather valve upper housing are provided with breather valve lower case 2, the breather valve upper housing 1 and breather valve lower casing
Vacuum chamber 3 is formed between body 2, the vacuum chamber 3 is internally provided with vacuum chamber valve disc 4, and 4 bottom of vacuum chamber valve disc is provided with
The diameter of polymer separators 5, the breather valve upper housing 1 is slightly larger than 2 diameter of breather valve lower case, the polymer separators 5
Diameter is identical with 1 diameter of breather valve upper housing, i.e., ought be mounted with that the breather valve upper housing 1 of polymer separators 5 is mounted on breather valve
When in lower case 2, polymer separators 5 are that some is stretched out except breather valve lower case 2, and lower case is stretched out in this part
Except polymer separators 5 act as the valve disc of traditional 6 gas vent of breather valve pressure chamber, 1 two sides of breather valve upper housing
It is just provided with pressure chamber 6, pressure chamber liquid injection port back-fire relief disk 7,6 side of the pressure chamber setting are provided at the top of the pressure chamber 6
There is liquid level window 8,6 side of pressure chamber offers pressure chamber liquid injection port 9, and the pressure chamber 6 is internally provided with anti-icing fluid 10,
The main component of the anti-icing fluid 10 is the mixture of ethylene glycol and water, and when the content of ethylene glycol and water ratio is 6:4, this is mixed
The freezing point for closing liquid can be reduced to -48.3 DEG C.In storage tank when gas pressure change, it is mounted on this breather valve on tank body top, is led to
It crosses polymer separators 5 and plays the role of sealing and breathing, the anti-icing fluid 10 is internally provided with liquid level float 11.
Further, in the above-mentioned technical solutions, 2 inner wall of breather valve lower case is provided with vacuum chamber gas inlet and outlet
12,2 bottom of breather valve lower case is provided with lower case flange 13, and the pressure chamber gas inlet and outlet 16 is exhaled by molding
It inhales 2 shell of valve lower case to connect by lower case flange 13 with tank body, the vacuum chamber gas inlet and outlet 12 connects with ambient air
It is logical；
Further, in the above-mentioned technical solutions, the breather valve lower case 2 includes outside lower case internal layer 14 and lower case
Layer 15, the lower case internal layer 14 and formation pressure chamber gas inlet and outlet 16 at the top of lower casing volume surrounding 15；
Further, in the above-mentioned technical solutions, the pressure chamber gas inlet and outlet 16 is internally provided with back-fire relief disk 17, can
To achieve the purpose that obstruct flame, support column 18 is connected between the breather valve lower case 2 and lower case flange 13；
Further, in the above-mentioned technical solutions, it is opened up between the pressure chamber gas inlet and outlet 16 and polymer separators 5
There is diaphragm perforation 19, offers discharge outlet between the pressure chamber gas inlet and outlet 16, lower casing volume surrounding 15 and polymer separators 5
20；
Further, in the above-mentioned technical solutions, hinged between the breather valve upper housing 1 and breather valve lower case 2, institute
It states and is bolted between breather valve upper housing 1 and breather valve lower case 2, the breather valve upper housing 1 is the double-deck setting.
This practical working principle:
So that polymer separators 5 is played the role of sealing by being equipped with polymer separators 5 referring to Figure of description 1-4, solve
It has determined the icing and crystallisation problems of oil gas or steam between conventional valve disc and valve seat, and has reduced the valve disc of traditional breather valve
Valve seat mechanical structure, it is close to play by the gravity by the air-flow and anti-icing fluid 10 that act on 5 surface of polymer separators
The function of sealing valve disc and setting breathing valve opening pressure, with the discharge and sucking of gas in tank body, polymer separators 5 and vacuum
Chamber valve disc 4 is constantly in a kind of state of vibration, so that steam can not condense on valve seat and valve disc, while soft height
5 coefficient of friction of molecule diaphragm is small, anti humility performance is good, and steam is also not easy to condense on its surface, so that breather valve can be accomplished substantially
It does not freeze and does not crystallize, the valve that ensures respiration ventilation is unimpeded and normally-open.
When gas pressure increases in storage tank, vibration occurs for polymer separators 5 as the flowing of gas shakes, and goes automatically
Except the frost of 4 exhalation vents of vacuum chamber valve disc and crystalline solid is condensed in, valve is ensured respiration the case where cold snap and chemicals crystallize
Lower accurate starting, prevents pressure of storage tank too high or too low, and polymer separators 5 are as gas exhalation sucking effect is in a kind of non-quiet
The state of state, anti-icing fluid 10 and polymer separators 5 in pressure chamber 6 play a kind of dynamic equilibrium state, therefore outside valve body
Steam is not easy to condense in membrane surface, and the valve that ensures respiration works normally.
When tank inner pressure is higher than ambient atmosphere, breather valve is in exhalation state, and gas passes through pressure chamber in tank
Gas inlet and outlet 16 enters, and enters vacuum chamber 3 by the diaphragm perforation 19 on polymer separators 5, the pressure of gas makes vacuum
Chamber valve disc 4 and polymer separators 5 compress, so that vacuum chamber 3 is in air-tight state.Simultaneously in pressure chamber 6 anti-icing fluid 10 injection
Amount is calculated according to working condition requirement, so gas pressure can open the high score at pressure chamber 6 when pressure reaches certain value
Sub- diaphragm 5, makes gas in storage tank be discharged out tank body.
When tank inner pressure be lower than ambient atmosphere when, breather valve is in suction condition, the macromolecule under pressure chamber 6 every
Film 5 is because the gravity of anti-icing fluid 10 keeps sealing.The vacuum chamber valve disc 4 under vacuum chamber 3 and polymer separators 5 are pushed up simultaneously
It rises, ambient atmos pressure enters pressure chamber gas inlet and outlet 16 by diaphragm perforation 19, and air is inhaled into, and tank body inner and outer air pressure obtains
To balance.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of antifreeze crystallization-preventive breather valve of diaphragm type, including breather valve upper housing (1), it is characterised in that: on the breather valve
Shell (1) bottom is provided with breather valve lower case (2), is formed between the breather valve upper housing (1) and breather valve lower case (2)
Vacuum chamber (3), the vacuum chamber (3) are internally provided with vacuum chamber valve disc (4), and vacuum chamber valve disc (4) bottom is provided with height
Molecule diaphragm (5), breather valve upper housing (1) two sides are just provided with pressure chamber (6), are provided at the top of the pressure chamber (6)
Pressure chamber liquid injection port back-fire relief disk (7), pressure chamber (6) side are provided with liquid level window (8), and pressure chamber (6) side is opened
Equipped with pressure chamber liquid injection port (9), the pressure chamber (6) is internally provided with anti-icing fluid (10), setting inside the anti-icing fluid (10)
There are liquid level float (11).
2. the antifreeze crystallization-preventive breather valve of a kind of diaphragm type according to claim 1, it is characterised in that: the breather valve lower casing
Body (2) inner wall is provided with vacuum chamber gas inlet and outlet (12), and breather valve lower case (2) bottom is provided with lower case flange
(13).
3. the antifreeze crystallization-preventive breather valve of a kind of diaphragm type according to claim 1, it is characterised in that: the breather valve lower casing
Body (2) includes lower case internal layer (14) and lower casing volume surrounding (15), and the lower case internal layer (14) and lower casing volume surrounding (15) are pushed up
Portion forms pressure chamber gas inlet and outlet (16).
4. the antifreeze crystallization-preventive breather valve of a kind of diaphragm type according to claim 3, it is characterised in that: the pressure chamber gas
Inlet and outlet (16) are internally provided with back-fire relief disk (17), are connected between the breather valve lower case (2) and lower case flange (13)
Support column (18).
5. the antifreeze crystallization-preventive breather valve of a kind of diaphragm type according to claim 3, it is characterised in that: the pressure chamber gas
It is offered diaphragm perforation (19) between inlet and outlet (16) and polymer separators (5), the pressure chamber gas inlet and outlet (16), lower casing
Discharge outlet (20) are offered between volume surrounding (15) and polymer separators (5).
6. the antifreeze crystallization-preventive breather valve of a kind of diaphragm type according to claim 1, it is characterised in that: the breather valve upper casing
It is hinged between body (1) and breather valve lower case (2), pass through spiral shell between the breather valve upper housing (1) and breather valve lower case (2)
It tethers and connects, the breather valve upper housing (1) is the double-deck setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821361626.5U CN209041679U (en) | 2018-08-23 | 2018-08-23 | A kind of antifreeze crystallization-preventive breather valve of diaphragm type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821361626.5U CN209041679U (en) | 2018-08-23 | 2018-08-23 | A kind of antifreeze crystallization-preventive breather valve of diaphragm type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209041679U true CN209041679U (en) | 2019-06-28 |
Family
ID=67031341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821361626.5U Active CN209041679U (en) | 2018-08-23 | 2018-08-23 | A kind of antifreeze crystallization-preventive breather valve of diaphragm type |
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|---|---|
| CN (1) | CN209041679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113154102A (en) * | 2021-03-25 | 2021-07-23 | 江苏复森特种阀门有限公司 | Novel breather valve |
-
2018
- 2018-08-23 CN CN201821361626.5U patent/CN209041679U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113154102A (en) * | 2021-03-25 | 2021-07-23 | 江苏复森特种阀门有限公司 | Novel breather valve |
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