CN204756054U - Novel piston back -fire relief breather valve - Google Patents
Novel piston back -fire relief breather valve Download PDFInfo
- Publication number
- CN204756054U CN204756054U CN201520364030.0U CN201520364030U CN204756054U CN 204756054 U CN204756054 U CN 204756054U CN 201520364030 U CN201520364030 U CN 201520364030U CN 204756054 U CN204756054 U CN 204756054U
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- negative pressure
- piston cylinder
- respiratory box
- breather valve
- piston
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- Expired - Fee Related
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Abstract
The utility model discloses a novel piston back -fire relief breather valve belongs to the back -fire relief ventilation safety device of fixed roof tank. Its main part appearance comprises breather valve casing and top cap jointly. The respiratory box is installed inside the breather valve casing. Terminal surface trompil and install the negative pressure piston cylinder and the malleation piston cylinder respectively about the respiratory box. Just, just be equipped with respectively in the negative pressure piston cylinder, negative pressure piston and compression spring. Respiratory box export is installed filter and spark arrester in proper order and is joined in marriage the pull ring outside to by interior. At the rain -proof cover of respiratory box export installation. The utility model discloses with the valve disc of the ordinary breather valve of piston replacement, avoid the valve disc and the rigidity of disk seat to contact, prolonged the life -span of equipment, improved sealing performance, harmful substance's emission in the gas has positive to the environmental protection in having reduced jar, the problem of maintenance, washing, change spark arrester and filter insert troublesome poeration is solved, can prevent birds destruction filter or nest at the breather valve to avoid the emergence of incident.
Description
Technical field
The utility model relates to a kind of piston type fire-retardant breather valve, belongs to the back-fire relief ventilation safety annex of fixed roof tank.
Background technique
Inhalation valve is the indispensable safety attachment of storage tank, its function be reduce volatile liquid in storage tank evaporating loss and tank inner pressure is controlled in safety range.Common inhalation valve generally pushes valve disc open by storage tank inside and outside differential pressure, reaches the object regulating tank internal pressure.But when tank internal pressure the comparison of the growth is slow, valve disc is open exhaust, and tank internal pressure declines, and causes valve disc to fall back to very soon on valve seat, valve cuts out, tank external and internal pressure balances very soon, and valve disc is open again, so repeats, there is a kind of valve disc oscillatory occurences, can not ensure good sealing, particularly the fragile valve member when the Contact of valve disc and valve seat is rigid contact, also easily causes freezeout in cold area.
Flame trap is when burning things which may cause a fire disaster is likely spread in storage tank by inhalation valve entry port, and flame, by the narrow and small hole of back-fire relief sandwich layer in inhalation valve, due to wall effect, makes thermal loss increase suddenly, thus makes flame extinction.The fire-retardant breather valve great majority that current fixed roof tank uses are bottoms flame trap being positioned over inhalation valve, are connected with storage tank.Bring great trouble therefore to the cleaning of flame trap, maintenance and replacing.
Oil product after long-time storage, can volatilize various harmful gas in storage tank, as sulfur dioxide, sulfur trioxide, hydrogen sulfide, mercaptan, nitrous oxide, nitrogen dioxide, ozone, chlorine, hydrogen cloride, organohalogen compounds, hydrocarbon, benzene, formaldehyde etc.If these harmful gases are directly discharged to air, can pollution of atmosphere be caused, be detrimental to health or destroy ecology.
Model utility content
The purpose of this utility model is to provide a kind of piston type fire-retardant breather valve.Its sealability is better, longer service life, easy access, cleaning and replacing flame trap and filter, and can filtering noxious gas.
In order to achieve the above object, the technical solution adopted in the utility model is: a kind of piston type fire-retardant breather valve, comprise inhalation valve housing, respiratory box, top cover, rain cover, flame trap and filter, top cover is installed on inhalation valve case top, connects with bolt; Respiratory box is installed on inhalation valve enclosure interior, and respiratory box outlet communicates with outside atmosphere; In respiratory box outlet, rain cover is installed; Export from the inside to the outside mounting filter, flame trap successively at respiratory box, and assemble draw ring.The perforate install negative pressure piston cylinder and malleation piston cylinder respectively of respiratory box upper and lower end face.In positive and negative pressure piston cylinder, positive and negative pressure piston and Compress Spring are housed respectively.In respiratory box outlet, rain cover is installed.
Further, the perforate respectively of described respiratory box upper and lower end face, spring one end is connected with negative pressure piston cylinder, the other end is connected with negative pressure piston, it is inner that negative pressure piston is placed in negative pressure piston cylinder, and respiratory box upper-end surface through hole welds negative pressure piston cylinder, and negative pressure piston cylinder internal diameter is greater than upper-end surface through hole; Second spring one end is connected with malleation piston cylinder, and the other end is connected with malleation piston, and it is inner that malleation piston is placed in malleation piston cylinder, and lower end surface through hole welds malleation piston cylinder, and malleation piston cylinder internal diameter is greater than lower end surface through hole.
Further, negative pressure piston cylinder sidewall has intakeport, and top has vent and communicates with valve insertion; Malleation piston cylinder sidewall has exhalation vents, and top has vent and communicates with air.
Further, flame trap is connected with filter bolt, is jointly installed on respiratory box outlet port, and filter is in inner side, and flame trap is in outside; At bolt end welding draw ring.
Further, protective net is arranged on the lower end surface of the chamber that flame trap and rain cover surround.
The utility model has following beneficial effect: the utility model piston replaces the valve disc of common inhalation valve, avoids the rigid contact of valve disc and valve seat, extends the life-span of equipment, improves sealability; Reduce the discharge of harmful matter in gas in tank, have positive effect for environmental protection; Solve maintenance, cleaning, change the problem of flame trap and filter element troublesome poeration; Bird damage filter can be stoped or nest at inhalation valve, thus avoiding the generation of security incident.
Accompanying drawing explanation
The structural representation of a kind of piston type fire-retardant breather valve that Fig. 1 provides for the utility model.
In figure: 1. inhalation valve housing, 2. malleation piston, 3. malleation piston cylinder, 4. respiratory box, 5. negative pressure piston, 6. negative pressure piston cylinder, 7. top cover, 8. vent, 9. Compress Spring, 10. intakeport, 11. vents, 12. exhalation vents, 13. rain covers, 14. protective nets, 15. draw rings, 16. flame traps, 17. filters, 18. second springs.
Embodiment
As shown in Figure 1, a kind of piston type fire-retardant breather valve, comprises inhalation valve housing 1, respiratory box 4, top cover 7, rain cover 13, flame trap 16 and filter 17, it is characterized in that: top cover 7 is installed on inhalation valve housing 1 top, connects with bolt; It is inner that respiratory box 4 is installed on inhalation valve housing 1, and respiratory box 4 outlet communicates with outside atmosphere; Export at respiratory box 4 and rain cover 13 is installed; Export from the inside to the outside mounting filter 17, flame trap 16 successively at respiratory box 4, and assemble draw ring 15.
This piston type fire-retardant breather valve is the exhaust malleation and the intake negative-pressure that are controlled oil product storage tank by malleation piston 2 and the weight of negative pressure piston 5, the pressure of spring.When the pressure in storage tank is within the control operation pressure range of inhalation valve, inhalation valve does not work, and keeps the seal of oil product storage tank; When supplementing medium or ambient temperature raises in oil product storage tank, the pressure of the tank internal upper part gas space is raised, when reaching the operation malleation of inhalation valve, malleation piston 2 is by lifting, expose exhalation vents 12, gas exhalation vents 12 is overflowed, and makes tank internal pressure not continue to increase; When extracting oil product out or temperature reduces outside storage tank, the pressure drop of the tank internal upper part gas space, when reaching the operation negative pressure of inhalation valve, negative pressure piston 5 upwards pushes up by the air outside storage tank, expose intakeport 10, make ambient atmos enter in tank by intakeport 10, make the pressure in storage tank no longer continue to decline, allow in tank with the air pressure balance outside tank.When burning things which may cause a fire disaster is likely spread in storage tank by inhalation valve entry port, flame, by the narrow and small hole of flame trap 16, due to wall effect, makes thermal loss increase suddenly, thus makes flame extinction, thus reaches the object of protection oil product storage tank safety.
The utility model malleation piston 2, negative pressure piston 5 replace malleation valve disc and the negative pressure valve disc of common inhalation valve, avoid the rigid contact of valve disc and valve seat, therefore extend the life-span of equipment, improve sealability; In tank, in gas, harmful matter, by being adsorbed by filter core during filter 12, has positive effect for environmental protection; Solve maintenance, cleaning, change the problem of flame trap 16 and filter 17 filter core troublesome poeration; Protective net 14 can stop bird damage filter or nest at inhalation valve, thus avoids the generation of security incident.
Claims (5)
1. a piston type fire-retardant breather valve, comprise inhalation valve housing (1), respiratory box (4), top cover (7), rain cover (13), flame trap (16) and filter (17), it is characterized in that: top cover (7) is installed on inhalation valve housing (1) top, connects with bolt; It is inner that respiratory box (4) is installed on inhalation valve housing (1), and respiratory box (4) outlet communicates with outside atmosphere; In respiratory box (4) outlet, rain cover (13) is installed; Export from the inside to the outside mounting filter (17), flame trap (16) successively at respiratory box (4), and assemble draw ring.
2. a kind of piston type fire-retardant breather valve according to claim 1, it is characterized in that: the perforate respectively of described respiratory box (4) upper and lower end face, spring (9) one end is connected with negative pressure piston cylinder (6), the other end is connected with negative pressure piston (5), it is inner that negative pressure piston (5) is placed in negative pressure piston cylinder (6), respiratory box (4) upper-end surface through hole welds negative pressure piston cylinder (6), and negative pressure piston cylinder (6) internal diameter is greater than upper-end surface through hole; Second spring (18) one end is connected with malleation piston cylinder (3), the other end is connected with malleation piston (2), it is inner that malleation piston (2) is placed in malleation piston cylinder (3), lower end surface through hole welds malleation piston cylinder (3), and malleation piston cylinder (3) internal diameter is greater than lower end surface through hole.
3. a kind of piston type fire-retardant breather valve according to claim 1, it is characterized in that: negative pressure piston cylinder (6) sidewall has intakeport (10), top has vent (8) and communicates with valve insertion; Malleation piston cylinder (3) sidewall has exhalation vents (12), and top has vent (11) and communicates with air.
4. a kind of piston type fire-retardant breather valve according to claim 1, it is characterized in that: flame trap (16) is connected with bolt with filter (17), jointly be installed on respiratory box (4) outlet port, filter (17) is in inner side, and flame trap (16) is in outside; At bolt end welding draw ring (15).
5. a kind of piston type fire-retardant breather valve according to claim 1, is characterized in that: protective net (14) is arranged on the lower end surface of the chamber that flame trap (16) surrounds with rain cover (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520364030.0U CN204756054U (en) | 2015-05-29 | 2015-05-29 | Novel piston back -fire relief breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520364030.0U CN204756054U (en) | 2015-05-29 | 2015-05-29 | Novel piston back -fire relief breather valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204756054U true CN204756054U (en) | 2015-11-11 |
Family
ID=54470761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520364030.0U Expired - Fee Related CN204756054U (en) | 2015-05-29 | 2015-05-29 | Novel piston back -fire relief breather valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204756054U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267629A (en) * | 2016-08-15 | 2017-01-04 | 南通凌凌环保科技有限公司 | A kind of spark arrester |
| CN111156336A (en) * | 2020-02-19 | 2020-05-15 | 朱颜颜 | Safety breather valve of petroleum storage tank |
| CN112013143A (en) * | 2019-05-30 | 2020-12-01 | 中国石油化工股份有限公司 | Fire-retardant type breather valve for stratum water storage tank |
-
2015
- 2015-05-29 CN CN201520364030.0U patent/CN204756054U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267629A (en) * | 2016-08-15 | 2017-01-04 | 南通凌凌环保科技有限公司 | A kind of spark arrester |
| CN112013143A (en) * | 2019-05-30 | 2020-12-01 | 中国石油化工股份有限公司 | Fire-retardant type breather valve for stratum water storage tank |
| 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 |
| CN111156336A (en) * | 2020-02-19 | 2020-05-15 | 朱颜颜 | Safety breather valve of petroleum storage tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20160529 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |