CN215258031U - Fireproof breather valve of positive exhaust pressure and negative suction pressure of storage tank - Google Patents
Fireproof breather valve of positive exhaust pressure and negative suction pressure of storage tank Download PDFInfo
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- CN215258031U CN215258031U CN202121122140.8U CN202121122140U CN215258031U CN 215258031 U CN215258031 U CN 215258031U CN 202121122140 U CN202121122140 U CN 202121122140U CN 215258031 U CN215258031 U CN 215258031U
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Abstract
The utility model provides a fireproof breather valve of positive exhaust pressure and negative suction pressure of a storage tank, which comprises a valve body, wherein a U-shaped airflow channel and a ventilation channel are arranged inside the valve body; the lower end of the airflow channel is communicated with the interior of the storage tank, the upper end of the airflow channel is closed, and the two opposite sides of the airflow channel are respectively provided with an exhalation valve and an inhalation valve; one end of the ventilation channel is respectively connected with the exhalation valve and the inhalation valve, and the other end of the ventilation channel is provided with a fire retardant core which is detachably connected with the exhalation valve and the inhalation valve; when the storage tank inhales, the inhalation valve is opened and the exhalation valve is closed, and airflow enters from the ventilation channel. The utility model has the advantages that: install back-fire relief core detachable on the passageway of taking a breath, can realize changing the back washing on line, needn't consider completely to lift by crane the dismouting with the help of large-scale hoisting equipment, and installation and maintenance are maintained conveniently, have solved back-fire relief core and have blockked up and ventilate problem not up to standard.
Description
Technical Field
The utility model relates to a storage tank atmospheric pressure balance technical field especially relates to an exhaust malleation of storage tank and the fire prevention breather valve of the negative pressure of breathing in.
Background
The fire-retardant breather valve is a safe and energy-saving product for maintaining the air pressure balance of the storage tank and reducing medium volatilization, the breather valve fully utilizes the bearing capacity of the storage tank to reduce medium emission, and the principle of the breather valve is to control the positive exhaust pressure and the negative suction pressure of the storage tank by utilizing the weight of a positive-negative pressure valve disc. The safe emptying equipment is adopted to quickly reduce the danger coefficient to the minimum under other conditions caused by liquid entering and exiting the storage tank, weather change (temperature and pressure), fire exposure, equipment failure or misoperation in material storage tanks of petroleum, chemical engineering and the like. The existing fire-retardant breather valve is limited by corrosivity, temperature and viscosity, the sealing, sensitivity and service life of the valve disc and the blockage and crystallization of the fire-retardant core are influenced in an uncertain degree, the valve disc is blocked finally, the jump or the opening is insensitive, and the fire retardant device fails or the ventilation capacity does not reach the standard.
SUMMERY OF THE UTILITY MODEL
In view of this, block up or the not up to standard problem of ventilating in order to solve current back-fire relief breather valve spark arrester, the embodiment of the utility model provides a fire prevention breather valve of the exhaust malleation of storage tank and the negative pressure of breathing in.
The embodiment of the utility model provides a fireproof breather valve of positive exhaust pressure and negative suction pressure of a storage tank, which comprises a valve body, wherein a U-shaped airflow channel and a ventilation channel are arranged inside the valve body;
the lower end of the airflow channel is communicated with the interior of the storage tank, the upper end of the airflow channel is closed, and the two opposite sides of the airflow channel are respectively provided with an exhalation valve and an inhalation valve;
one end of the ventilation channel is respectively connected with the exhalation valve and the inhalation valve, and the other end of the ventilation channel is provided with a fire retardant core which is detachably connected with the exhalation valve and the inhalation valve; when the storage tank inhales, the inhalation valve is opened and the exhalation valve is closed, and airflow enters from the ventilation channel.
Further, the inhalation valve and the exhalation valve are respectively positioned at the upper side and the lower side of the ventilation channel;
the air suction valve comprises an air suction valve body, an air suction valve cover which covers the upper end of the air suction valve body, an air suction valve guide rod fixed on the upper part of the air suction valve cover, and an air suction valve sleeve fixedly arranged in the extending direction of the air suction valve guide rod, wherein the upper end of the air suction valve guide rod is inserted into the air suction valve sleeve and can move up and down;
the expiratory valve comprises an expiratory valve body, an expiratory valve cover which covers the upper end of the expiratory valve body, an expiratory valve sleeve which penetrates through and is fixedly connected with the expiratory valve cover, and an expiratory valve guide rod which is fixedly arranged in the expiratory valve body, wherein the expiratory valve sleeve is sleeved on the expiratory valve guide rod and can move up and down.
Furthermore, an upper port of the inhalation valve body is provided with an inhalation valve seat, the upper port of the inhalation valve seat is arranged to be a sharp corner, an annular pressure groove is arranged on the inhalation valve disk, a membrane is arranged on the lower surface of the inhalation valve disk, the inhalation valve disk covers the inhalation valve seat, the pressure groove is aligned with the sharp corner up and down, the sharp corner is abutted against the membrane, and the same membrane is arranged between the exhalation valve body and the exhalation valve cover.
Furthermore, a support is arranged at one end of the outer side of the air exchange channel, a threaded hole is formed in the middle of the support, and the fire retardant core is filled in the air exchange channel and fixedly connected with the threaded hole through a fastening bolt.
Furthermore, a rainproof cover is arranged on the outer side of the fire retardant core.
Further, the valve body is a vertical cylinder, the upper end and the lower end of the airflow channel are respectively arranged at the two ends of the valve body in the vertical direction, a side cylinder is further arranged on one side of the valve body, and an inner hole of the side cylinder is the ventilation channel.
Furthermore, the lower end of the air flow channel is provided with an equipment flange used for connecting a storage tank, and the upper end of the air flow channel is sealed by a valve cover.
Compared with the prior art, the embodiment of the utility model provides a beneficial effect that technical scheme brought is:
1. the fire retardant core is detachably arranged on the ventilation channel, so that cleaning after online replacement can be realized, hoisting and dismounting by large-scale hoisting equipment are completely not required to be considered, the installation, maintenance and repair are convenient, and the problems that the fire retardant core is blocked and ventilation does not reach the standard are solved;
2. the fire retardant core and the valve body are integrally designed, so that the volume is reduced, the space is saved, and the load of the self weight of the equipment on the tank body is reduced.
3. The valve seat and the flame arrester channel are combined into a whole, so that leakage points can be reduced, the valve body structure is more compact, and materials are saved.
4. The expiratory valve and the inspiratory valve adopt a gravity type valve disc loading structure, can quickly react during debugging, greatly improves the working efficiency, has lower maintenance cost and improved efficiency, and achieves the purposes of environmental protection, energy conservation and emission reduction.
5. The valve disc adopts an embedded diaphragm covering structure, so that overpressure protection can be realized, the defects of low constant pressure of the valve and frequent exhaust of the storage tank are overcome, and energy conservation and emission reduction are realized for the storage tank.
Drawings
FIG. 1 is a front view of the present invention of a positive pressure venting and negative pressure suction fire-proof breather valve for a storage tank;
FIG. 2 is an enlarged view of a portion of FIG. 1 at I;
fig. 3 is a top view of the fire-proof breather valve for positive exhaust pressure and negative suction pressure of the storage tank of the present invention.
In the figure: the device comprises a valve body 1, an expiratory valve guide rod 2, an expiratory valve body 3, an expiratory valve cover 4, an expiratory valve cover 5, an inspiratory valve body 6, an inspiratory valve cover 7, an inspiratory valve guide rod 8, a valve cover 9, an inspiratory valve cover 10, a rain-proof cap 11, a fire-proof core 12, an airflow channel 13, a ventilation channel 14, a side cylinder body 15, a bracket 16, a fastening bolt 17, an equipment flange 18, a sharp corner part 19, a pressure groove 20 and a diaphragm 21.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1 and 3, an embodiment of the present invention provides a fireproof breather valve for positive exhaust pressure and negative suction pressure of a storage tank, which includes a valve body 1, and a U-shaped airflow channel 13 and a ventilation channel 14 are disposed inside the valve body 1.
The lower end of the airflow channel 13 is communicated with the inside of the storage tank, the upper end of the airflow channel is closed, and the two opposite sides of the airflow channel 13 are respectively provided with an exhalation valve and an inhalation valve. Specifically, the method comprises the following steps:
the valve body 1 is a vertical cylinder, and a side cylinder 15 is further arranged on one side of the valve body 1 along the vertical direction of the valve body. The lower end of the valve body 1 is provided with an equipment flange 18 used for connecting a storage tank, a plurality of bolt holes are arranged around the equipment flange 18, and bolts are arranged at the bolt holes and connected with a storage tank manhole. The upper end of the valve body 1 is sealed through a valve cover 9, the upper port of the valve body 1 is provided with a valve seat, and the valve cover 9 covers the valve seat and is connected with the edge of the valve seat through a bolt. This allows relatively independent chambers to be formed in the valve body 1 and the side cylinder 15.
The airflow channel 13 is a substantially horizontal U-shaped cavity, two ports of the airflow channel 13 are arranged vertically and oppositely, and the upper and lower ends of the airflow channel 13 are respectively arranged at two ends of the valve body 1 in the vertical direction. The ventilation channel 14 is approximately a cylindrical cavity, and the ventilation channel 14 is approximately horizontally arranged and is positioned on a middle parting line of the airflow channel 13.
One end of the ventilation channel 14 is respectively connected with the expiratory valve and the inspiratory valve, and the other end is provided with a fire retardant core 12 which is detachably connected. Here, the exhalation valve and the inhalation valve both adopt a gravity type valve disc loading structure, and are located at two opposite sides of the middle of the airflow channel 13, specifically, at the upper and lower sides of the ventilation channel 14, respectively.
The air suction valve comprises an air suction valve body 6, an air suction valve cover 7 covering the upper end of the air suction valve body 6, an air suction valve guide rod 8 fixed to the upper portion of the air suction valve cover 7, and an air suction valve sleeve 10 fixedly arranged in the extending direction of the air suction valve guide rod 8, and the upper end of the air suction valve guide rod 8 is inserted into the air suction valve sleeve 10 and can move up and down. The suction valve body 6 is close to the valve cover 9, is cylindrical and is fixedly connected with the inner wall of the valve body 1, the suction valve cover 7 is arranged above the suction valve body 6, the vertical setting and the lower end fixed connection of the suction valve guide rod 8 are arranged on the suction valve cover 7, the upper end of the suction valve sleeve 10 is fixed on the valve cover 9, and the upper end of the suction valve guide rod 8 is inserted into the lower end of the suction valve sleeve 10.
When the storage tank inhales, the valve disc 7 of the inhalation valve is pushed to move upwards under the action of external atmospheric pressure, the guide rod 8 of the inhalation valve is driven to move upwards along the inner hole of the valve sleeve 10 of the inhalation valve, the valve disc 7 of the inhalation valve is opened, and external airflow enters the airflow channel 13 and the storage tank.
The expiratory valve comprises an expiratory valve body 3, an expiratory valve cover 4 covering the upper end of the expiratory valve body 3, an expiratory valve sleeve 5 penetrating through and fixedly connected with the expiratory valve cover 4, and an expiratory valve guide rod 2 fixedly arranged in the expiratory valve body 3, wherein the expiratory valve sleeve 5 is sleeved on the expiratory valve guide rod 2 and can move up and down. The valve body 3 of the expiratory valve is close to the lower port of the valve body 1, is cylindrical and is fixedly connected with the inner wall of the valve body 1, the valve cover 4 of the expiratory valve is arranged above the valve body 3 of the expiratory valve, the guide rod 2 of the expiratory valve is vertically arranged, the lower end of the guide rod is fixedly connected with the inner wall of the valve body 1, the lower end of the valve sleeve 5 of the expiratory valve penetrates through the valve disc 4 of the expiratory valve, and the upper end of the guide rod 2 of the expiratory valve is directly inserted into the lower end of the valve sleeve 5 of the expiratory valve and can move up and down.
When the storage tank exhales, the valve disc 4 of the expiratory valve is pushed to move upwards under the action of the air pressure in the storage tank, the valve sleeve 5 of the expiratory valve is driven to move upwards along the guide rod 2 of the expiratory valve, the valve disc 4 of the expiratory valve is opened, and the airflow in the storage tank enters the ventilation channel 13 and passes through the fire retardant core 12 to be discharged out of the storage tank.
Referring to fig. 2, an upper port of the inhalation valve body 3 is provided with an inhalation valve seat, the upper port of the inhalation valve seat is provided with a sharp corner 19, the inhalation valve disk 6 is provided with an annular indent 20, the lower surface of the inhalation valve disk is provided with a membrane 21, the inhalation valve disk 6 covers the inhalation valve seat, the indent 20 and the sharp corner 19 are aligned up and down, the sharp corner 19 abuts against the membrane 21, and the same membrane is arranged between the exhalation valve body 3 and the exhalation valve cover 4.
When the fireproof breather valve is used, the equipment flange 18 and a manhole of a storage tank are locked through bolts, when a medium is supplemented in the tank, the pressure in the space in the tank is increased, and when the set pressure of the breather valve is reached, the valve disc 4 of the breather valve is pushed open, gas escapes from the breather valve, and the pressure in the tank is not increased any more; when the medium is pumped out of the tank, the pressure in the space in the tank is reduced, and the set pressure of the air suction valve is reached, the valve disc 7 of the air suction valve is pushed open by the atmosphere outside the tank, so that the external gas enters the tank after being filtered by the fire retardant core, the pressure in the tank is not reduced any more, and the air pressure balance of the storage tank can be achieved by the fire retardant breather valve, so that the safety of the storage tank is protected.
In summary, when the storage tank is exhausted, the exhalation valve is opened and the inhalation valve is closed, and the airflow is exhausted from the ventilation channel; when the storage tank inhales, the inhalation valve is opened and the exhalation valve is closed, and airflow enters from the ventilation channel. Through expiratory valve disk 4 with the separation of beating and spark arrester to the kindling is opened and close of inspiratory valve disk 7, reduces the storage tank and produces risks such as suppressing pressure, deformation, explosion because of pressure variation, effectively improves the waste of medium in the storage tank and to the pollution of environment, and whole journey need not artificial operation, automatic re-setting behind the release pressure, the accurate pressure of opening and close of fine setting valve disk realizes accurate control, discharges rapidly, effective sealed purpose.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. The utility model provides a fire prevention breather valve of exhaust malleation and the negative pressure of breathing in of storage tank which characterized in that: the air-exchange valve comprises a valve body, wherein a U-shaped air flow channel and an air exchange channel are arranged in the valve body;
the lower end of the airflow channel is communicated with the interior of the storage tank, the upper end of the airflow channel is closed, and the two opposite sides of the airflow channel are respectively provided with an exhalation valve and an inhalation valve;
one end of the ventilation channel is respectively connected with the exhalation valve and the inhalation valve, and the other end of the ventilation channel is provided with a fire retardant core which is detachably connected with the exhalation valve and the inhalation valve; when the storage tank inhales, the inhalation valve is opened and the exhalation valve is closed, and airflow enters from the ventilation channel.
2. The fire-proof positive-pressure-exhaust and negative-pressure-intake breather valve for a storage tank of claim 1, wherein: the inhalation valve and the exhalation valve are respectively positioned at the upper side and the lower side of the ventilation channel;
the air suction valve comprises an air suction valve body, an air suction valve cover which covers the upper end of the air suction valve body, an air suction valve guide rod fixed on the upper part of the air suction valve cover, and an air suction valve sleeve fixedly arranged in the extending direction of the air suction valve guide rod, wherein the upper end of the air suction valve guide rod is inserted into the air suction valve sleeve and can move up and down;
the expiratory valve comprises an expiratory valve body, an expiratory valve cover which covers the upper end of the expiratory valve body, an expiratory valve sleeve which penetrates through and is fixedly connected with the expiratory valve cover, and an expiratory valve guide rod which is fixedly arranged in the expiratory valve body, wherein the expiratory valve sleeve is sleeved on the expiratory valve guide rod and can move up and down.
3. The fire-proof breather valve for positive exhaust pressure and negative intake pressure of a storage tank of claim 2, wherein: the upper port of the inhalation valve body is provided with an inhalation valve seat, the upper port of the inhalation valve seat is arranged to be a sharp corner, the inhalation valve disk is provided with an annular pressure groove, the lower surface of the inhalation valve disk is provided with a membrane, the inhalation valve disk covers the inhalation valve seat, the pressure groove is aligned with the sharp corner up and down, the sharp corner is tightly abutted against the membrane, and the same membrane is arranged between the exhalation valve body and the exhalation valve cover.
4. The fire-proof positive-pressure-exhaust and negative-pressure-intake breather valve for a storage tank of claim 1, wherein: the ventilation device is characterized in that a support is arranged at one end of the outer side of the ventilation channel, a threaded hole is formed in the middle of the support, and the fire retardant core is filled in the ventilation channel and is fixedly connected with the threaded hole through a fastening bolt.
5. The fire-proof positive-pressure-exhaust and negative-pressure-intake breather valve for a storage tank of claim 1, wherein: the outside of back-fire relief core still is equipped with rain-proof cover.
6. The fire-proof positive-pressure-exhaust and negative-pressure-intake breather valve for a storage tank of claim 1, wherein: the valve body is a vertical cylinder, the upper end and the lower end of the airflow channel are respectively arranged at the two ends of the valve body in the vertical direction, a side cylinder is further arranged on one side of the valve body, and an inner hole of the side cylinder is the ventilation channel.
7. The fire-proof positive-pressure-exhaust and negative-pressure-intake breather valve for a storage tank of claim 1, wherein: the lower end of the airflow channel is provided with an equipment flange used for connecting a storage tank, and the upper end of the airflow channel is sealed by a valve cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121122140.8U CN215258031U (en) | 2021-05-24 | 2021-05-24 | Fireproof breather valve of positive exhaust pressure and negative suction pressure of storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121122140.8U CN215258031U (en) | 2021-05-24 | 2021-05-24 | Fireproof breather valve of positive exhaust pressure and negative suction pressure of storage tank |
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| Publication Number | Publication Date |
|---|---|
| CN215258031U true CN215258031U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121122140.8U Active CN215258031U (en) | 2021-05-24 | 2021-05-24 | Fireproof breather valve of positive exhaust pressure and negative suction pressure of storage tank |
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| CN (1) | CN215258031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673816A (en) * | 2022-03-11 | 2022-06-28 | 江苏复森特种阀门有限公司 | Integrated fire retardant breather valve capable of adjusting pressure of breather valve |
-
2021
- 2021-05-24 CN CN202121122140.8U patent/CN215258031U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673816A (en) * | 2022-03-11 | 2022-06-28 | 江苏复森特种阀门有限公司 | Integrated fire retardant breather valve capable of adjusting pressure of breather valve |
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