CN110260033B - A snap valve security inspection ware for on-line measuring on site - Google Patents
A snap valve security inspection ware for on-line measuring on site Download PDFInfo
- Publication number
- CN110260033B CN110260033B CN201910450991.6A CN201910450991A CN110260033B CN 110260033 B CN110260033 B CN 110260033B CN 201910450991 A CN201910450991 A CN 201910450991A CN 110260033 B CN110260033 B CN 110260033B
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- flange
- valve
- outer cylinder
- cylinder body
- snap
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- 238000007689 inspection Methods 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 34
- 230000005291 magnetic effect Effects 0.000 claims description 26
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 18
- 239000001257 hydrogen Substances 0.000 description 17
- 229910052739 hydrogen Inorganic materials 0.000 description 17
- 238000005984 hydrogenation reaction Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
Classifications
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to the technical field of breaking valves, and discloses a breaking valve safety inspection device for on-site on-line detection, which comprises a first flange fixedly connected to one end of a breaking valve, a second flange connected to the outer circle of the other end of the breaking valve in a sliding manner, and an outer cylinder body sleeved on the periphery of the breaking valve in an empty manner, wherein one end of the outer cylinder body is integrally connected with the first flange, the other end of the outer cylinder body is detachably connected with the second flange, a closed cavity is formed between the first flange, the second flange and the outer cylinder body and the outer circle of the breaking valve after the first flange, the second flange and the outer cylinder body are connected, a third flange is fixedly arranged on the outer circle of the breaking valve, which is close to the second flange, in the closed cavity, a corrugated pipe is connected between the third flange and the second flange, and a pressure gauge for detecting the internal pressure of the closed cavity is arranged on the outer cylinder body. The invention realizes the on-site on-line detection of the snap-off valve and improves the use safety and reliability of the snap-off valve.
Description
Technical Field
The invention relates to the technical field of snap-off valves, in particular to a snap-off valve security detector for on-site on-line detection.
Background
The snap-off valve is an emergency release device arranged on the fluid pipeline, when the fluid pipeline is subjected to the total use of overload pulling force, the snap-off valve can be automatically separated into two parts, and the two ends of the separation part can be automatically closed to prevent the leakage of fluid, so that the safety of equipment is ensured. The two parts of the snap-off valve can be connected again after being separated so as to ensure the continuous normal use of the fluid pipeline.
The snap-off valve is used as a safety component and is mainly used for a pipeline for conveying dangerous fluid. For example, in a hydrogenation machine for providing compressed hydrogen fuel or natural gas hydrogen-mixed fuel filling service for an automobile, according to the specification of the compressed hydrogen filling machine for the automobile in the national standard GB/T31138-2014, a stretch-break valve should be arranged on a hydrogenation hose of the hydrogenation machine so as to prevent safety accidents caused by leakage of hydrogen after the hydrogenation hose is accidentally pulled.
Although the prior art snap-off valve itself has a self-closing structure after overload separation, in consideration of hydrogen gas being a highly dangerous explosive gas, once the self-closing structure of the snap-off valve fails, serious safety accidents of hydrogen leakage may still occur. For this reason, it is often important for a hydrogenation machine to be used in the field to ensure the safety and reliability of the snap-off valve. If it can be detected in advance in a safer manner whether the self-closing structure of the snap-off valve is normal or not in the field use process of the snap-off valve, the occurrence of such dangerous situations can be avoided.
Therefore, it is necessary to develop a snap valve safety inspection device for on-site on-line detection to improve the safety and reliability of the on-site use of the hydrogenation machine.
Disclosure of Invention
In order to solve the problems, the invention provides a safety detector for a snap-off valve for on-site on-line detection, which aims to realize on-site on-line detection of the snap-off valve and improve the use safety and reliability of the snap-off valve. The specific technical scheme is as follows:
A snap valve security inspection device for on-site on-line detection comprises a first flange fixedly connected with one end of a snap valve, a second flange which is in sliding connection with the outer circle of the other end of the snap valve, and an outer cylinder body which is hollow and sleeved on the outer circle of the snap valve, wherein one end of the outer cylinder body is integrally connected with the first flange, the other end of the outer cylinder body is detachably connected with the second flange, a closed cavity is formed between the first flange, the second flange and the outer cylinder body after being connected with the outer circle of the snap valve, a third flange is fixedly arranged on the outer circle of the snap valve, which is close to the second flange, in the closed cavity, a corrugated pipe is connected between the third flange and the second flange, and a pressure gauge for detecting the internal pressure of the closed cavity is arranged on the outer cylinder body.
When the snap-off valve is in normal use, the connection between the outer cylinder body and the second flange is in a separable state (no connecting piece is arranged at the connection part); when the real-time security inspection is needed to be carried out on the stretch-break valve in a use state, the outer cylinder body and the second flange are fixed together by using the connecting piece, then the stretch-break valve is separated by using external force, and as the separation part of the stretch-break valve is positioned in the closed cavity, even if the stretch-break valve fails and hydrogen leaks, the hydrogen cannot leak, and meanwhile, whether the stretch-break valve is normal can be judged by observing the pressure change of the pressure gauge. After the security inspection is finished, the connecting piece between the outer cylinder body and the second flange is removed, and the two halves of the breaking valve are connected together again, so that the valve can be put into normal use.
According to the safety inspection device for the stretch-breaking valve, the stretch-breaking valve safety inspection device is arranged on the stretch-breaking valve, so that the periodic real-time safety inspection of the stretch-breaking valve in the use process is realized, the leakage of hydrogen caused by failure of the stretch-breaking valve can be prevented, and the safety and reliability of the stretch-breaking valve are improved.
Preferably, a sealing ring is arranged between the third flange and the second flange, and the sealing ring is positioned at the periphery of the corrugated pipe.
As one of the arrangement modes of the sealing ring between the third flange and the second flange, the sealing ring is connected to the end face of the third flange.
As a second mode of arrangement of the sealing ring between the third flange and the second flange, the sealing ring is connected to the end face of the second flange.
The sealing ring between the third flange and the second flange can be arranged, so that when the safety check is performed on the stretch-break valve, the stretch-break valve is pulled open, and then the sealing ring is contacted with the third flange and the second flange, and when hydrogen leakage occurs, high-pressure hydrogen can further push the third flange to push against the second flange, thereby forming more reliable sealing, protecting the corrugated pipe, and further improving the reliability of the safety check device of the stretch-break valve.
Preferably, a limit screw for limiting the relative distance between the second flange and the third flange is further arranged between the second flange and the third flange.
Preferably, the second flange is provided with a screw connection hole, the third flange is provided with a screw passing hole, and the threaded head of the limit screw passes through the screw passing hole and then is connected in the screw connection hole.
Through set up stop screw between second flange and third flange, on the one hand can prevent that the second flange from sliding out and breaking the valve, on the other hand also can ensure that the flexible of bellows is in reasonable scope, prevents that the bellows from exceeding flexible stroke and damaging.
In the invention, sealing rings are respectively arranged between the connecting surfaces of the snap-off valve and the first flange and between the connecting surfaces of the outer cylinder body and the second flange.
As a further improvement of the invention, a magnetic ring is arranged between the connecting surface of the outer cylinder body and the second flange.
Preferably, the specific arrangement mode of the magnetic ring in the invention is as follows: and a magnetic ring mounting groove is formed in the end face of the connecting surface position of one part of the outer cylinder body and the second flange, wherein the connecting surface position of the outer cylinder body and the second flange is contacted with the outer cylinder body, and the magnetic ring is fixedly connected in the magnetic ring mounting groove.
Preferably, the magnetic ring is glued in the magnetic ring mounting groove.
The magnetic connection of the end face of the outer cylinder body and the second flange is realized through the magnetic ring, so that when the snap-off valve is used normally (the connecting part of the outer cylinder body and the second flange is not provided with a connecting piece), the outer cylinder body and the second flange can still be connected together through the magnetic effect, and therefore the parts in the closed cavity can be protected from being influenced by external dust, and the adaptability and the reliability of the snap-off valve security inspection device are further improved.
In the invention, the detachable connection of the outer cylinder body and the second flange is a bolt connection.
The beneficial effects of the invention are as follows:
Firstly, the safety detector for the breaking valve for on-site on-line detection provided by the invention realizes regular real-time safety detection of the breaking valve in the use process by arranging the safety detector for the breaking valve on the breaking valve, so that hydrogen leakage caused by failure of the breaking valve can be prevented, and the safety and reliability of the breaking valve are improved.
Secondly, according to the safety inspection device for the stretch-break valve for on-site on-line detection, due to the arrangement of the sealing ring between the third flange and the second flange, the sealing ring is simultaneously contacted with the third flange and the second flange after the stretch-break valve is pulled open during safety inspection, and high-pressure hydrogen can further push the third flange to push against the second flange when hydrogen leakage occurs, so that more reliable sealing is formed, a corrugated pipe is protected, and the reliability of the safety inspection device for the stretch-break valve is further improved.
Thirdly, according to the safety inspection device for the break valve for on-site on-line detection, the limiting screw is arranged between the second flange and the third flange, so that the second flange can be prevented from sliding out of the break valve, and the bellows can be ensured to stretch within a reasonable range and prevented from being damaged due to exceeding a stretch stroke.
Fourth, the magnetic connection between the end face of the outer cylinder and the second flange is realized by arranging the magnetic ring, so that the outer cylinder and the second flange can still be connected together under the action of magnetism when the stretch-break valve is normally used (a connecting piece is not arranged at the connecting part of the outer cylinder and the second flange), parts in the closed cavity can be protected from being influenced by external dust, and the adaptability and the reliability of the stretch-break valve security inspection device are further improved.
Drawings
FIG. 1 is a schematic diagram of a snap valve security check device for in-situ on-line detection of the present invention;
Fig. 2 is a schematic structural view of a safety inspection device with a breaking valve provided on the breaking valve of the hydrogenation machine.
In the figure: 1. the safety inspection device for the breaking valve comprises a breaking valve, a breaking valve safety inspection device 2, a first flange, a third flange, a first flange, a second flange, a third flange, an outer cylinder body, a sealed cavity, a pressure gauge, a bellows, a sealing ring, a second flange, a sealing ring and a sealing ring, 11, a hydrogenation hose, 12, a hydrogenation gun, 13, a hydrogenation machine host, 14, a connecting piece (bolt), 15, a sealing ring, 16, a sealing ring, 17, a limit screw, 18, a magnetic ring, 19 and a disengaging part of a snap-off valve.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
The embodiment of the safety inspection device for the breaking valve for on-site on-line detection comprises a first flange 3 fixedly connected to one end of the breaking valve 1, a second flange 9 slidingly connected to the outer circle of the other end of the breaking valve 1, and an outer cylinder 5 sleeved on the periphery of the breaking valve 1, wherein one end of the outer cylinder 5 is integrally connected with the first flange 3, the other end of the outer cylinder 5 is detachably connected with the second flange 9, a closed cavity 6 is formed between the first flange 3, the second flange 9 and the outer cylinder 5 after being connected with the outer circle of the breaking valve 1, a third flange 4 is fixedly arranged on the outer circle of the breaking valve 1, which is close to the second flange 9, in the closed cavity 6, a corrugated pipe 8 is connected between the third flange 4 and the second flange 9, and a pressure gauge 7 for detecting the internal pressure of the closed cavity 6 is arranged on the outer cylinder 5.
When the snap-off valve 1 is in normal use, the connection between the outer cylinder 5 and the second flange 9 is in a separable state (no connecting piece is arranged at the connection part); when the real-time security check is needed to be performed on the stretch-break valve 1 in a use state, the connecting piece 14 is used for fixing the outer cylinder 5 and the second flange 9 together, then the stretch-break valve 1 is detached by using external force, and as the detaching part of the stretch-break valve 1 is positioned in the closed cavity 6, even if the stretch-break valve 1 fails and hydrogen leaks, the hydrogen cannot leak, and meanwhile, whether the stretch-break valve 1 is normal can be judged by observing the pressure change of the pressure gauge 7. After the security inspection is finished, the connecting piece 14 between the outer cylinder 5 and the second flange 9 is removed, and the two halves of the snap-off valve 1 are connected together again, so that the normal use can be realized.
According to the safety inspection device for the stretch-breaking valve 1, the stretch-breaking valve safety inspection device 2 is arranged on the stretch-breaking valve 1, so that the periodic real-time safety inspection of the stretch-breaking valve 1 in the use process is realized, the leakage of hydrogen caused by faults of the stretch-breaking valve 1 can be prevented, and the safety and reliability of the stretch-breaking valve 1 are improved.
Preferably, a sealing ring 10 is disposed between the third flange 4 and the second flange 9, and the sealing ring 10 is located at the periphery of the bellows 8.
As one of the arrangements of the sealing ring 10 between the third flange 4 and the second flange 9, the sealing ring 10 is connected to the end face of the third flange 4.
As a second mode of arrangement of the sealing ring 10 between the third flange 4 and the second flange 9, the sealing ring 10 is connected to the end face of the second flange 9.
The arrangement of the sealing ring 10 between the third flange 4 and the second flange 9 can realize that the sealing ring 10 is simultaneously contacted with the third flange 4 and the second flange 9 after the stretch-break valve 1 is pulled open during security inspection of the stretch-break valve 1, and high-pressure hydrogen can further push the third flange 4 to push against the second flange 9 when hydrogen leakage occurs, so that more reliable sealing is formed, the corrugated pipe 8 is protected, and the reliability of the stretch-break valve security inspection device 2 is further improved.
Preferably, a limit screw 17 for limiting the relative distance between the second flange 9 and the third flange 4 is further disposed between the second flange 9 and the third flange 4.
Preferably, a screw connection hole is formed in the second flange 9, a screw passing hole is formed in the third flange 4, and a threaded head of the limit screw 17 passes through the screw passing hole and is then connected to the screw connection hole.
By arranging the limit screw 17 between the second flange 9 and the third flange 4, on the one hand, the second flange 9 can be prevented from sliding out of the stretch-break valve 1, and on the other hand, the expansion and contraction of the corrugated pipe 8 can be ensured to be within a reasonable range, and the corrugated pipe 8 is prevented from being damaged due to exceeding the expansion and contraction stroke.
In this embodiment, sealing rings 16 and 15 are provided between the connection surfaces of the snap valve 1 and the first flange 3 and between the connection surfaces of the outer cylinder 5 and the second flange 3, respectively.
As a further development of this embodiment, a magnetic ring 18 is also arranged between the connection surfaces of the outer cylinder 5 and the second flange 9.
Preferably, the specific arrangement manner of the magnetic ring in this embodiment is as follows: a magnetic ring mounting groove is formed in the end face of the connecting surface position of one part of the outer cylinder body 5 and the second flange 9, where the outer cylinder body 5 contacts with the second flange 9, and the magnetic ring 18 is fixedly connected in the magnetic ring mounting groove.
Preferably, the magnetic ring 18 is glued in the magnetic ring mounting groove.
The magnetic connection between the end face of the outer cylinder 5 and the second flange 9 is realized by the magnetic ring 18, so that the outer cylinder 5 and the second flange 9 can still be connected together under the action of magnetism when the snap valve 1 is normally used (the connecting part of the outer cylinder 5 and the second flange 9 is not provided with the connecting piece 14), and parts in the closed cavity 6 can be protected from external dust, and the adaptability and the reliability of the snap valve security inspection device 2 are further improved.
In this embodiment, the detachable connection between the outer cylinder 5 and the second flange 9 is a bolt 14 connection.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (9)
1. The safety detector for the breaking valve for on-site on-line detection is characterized by comprising a first flange fixedly connected to one end of the breaking valve, a second flange slidingly connected to the outer circle of the other end of the breaking valve, and an outer cylinder body sleeved on the periphery of the breaking valve, wherein one end of the outer cylinder body is integrally connected with the first flange, the other end of the outer cylinder body is detachably connected with the second flange, a closed cavity is formed between the first flange, the second flange and the outer cylinder body after being connected with the outer circle of the breaking valve, a third flange is fixedly arranged on the outer circle of the breaking valve, which is close to the second flange, in the closed cavity, a corrugated pipe is connected between the third flange and the second flange, a bulge part positioned on the periphery of the corrugated pipe is arranged on the end face of the third flange, which is close to one side of the second flange, a space is arranged between the bulge part on the third flange and the second flange, and a pressure gauge for detecting the pressure in the closed cavity is arranged on the outer cylinder body; a sealing ring is arranged between the protruding part of the third flange and the second flange, and the sealing ring is positioned at the periphery of the corrugated pipe; and after the breaking valve is pulled open, the sealing ring is simultaneously contacted with the third flange and the second flange.
2. A snap valve safety inspection device for in-situ on-line inspection according to claim 1, wherein the sealing ring is attached to an end face of the boss of the third flange.
3. A snap valve security inspection device for in situ on-line inspection according to claim 1, wherein the sealing ring is attached to an end face of the second flange.
4. The safety inspection device for the on-site online detection of the breaking valve according to claim 1, wherein a limit screw for limiting the relative distance between the second flange and the third flange is further arranged between the second flange and the third flange.
5. The safety inspection device for the on-site online detection of the breaking valve according to claim 4, wherein a screw connecting hole is formed in the second flange, a screw penetrating hole is formed in the third flange, and a thread head of the limiting screw penetrates through the screw penetrating hole and then is connected in the screw connecting hole.
6. The safety inspection device for on-site on-line inspection of a snap valve according to claim 1, wherein sealing rings are respectively provided between the connection surfaces of the snap valve and the first flange and between the connection surfaces of the outer cylinder and the second flange.
7. The safety inspection device for the on-site online detection of the snap-off valve according to claim 1, wherein a magnetic ring is further arranged between the connecting surface of the outer cylinder body, which is in contact with the second flange.
8. The safety inspection device for the on-site online detection of the breaking valve according to claim 7, wherein a magnetic ring mounting groove is formed in the end face of the connecting face position of the outer cylinder body of one of the outer cylinder body and the second flange, wherein the connecting face position of the outer cylinder body and the second flange is contacted with each other, and the magnetic ring is fixedly connected in the magnetic ring mounting groove.
9. The snap valve security inspection device for in-situ on-line inspection of claim 1, wherein the detachable connection of the outer cartridge to the second flange is a bolted connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910450991.6A CN110260033B (en) | 2019-05-28 | 2019-05-28 | A snap valve security inspection ware for on-line measuring on site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910450991.6A CN110260033B (en) | 2019-05-28 | 2019-05-28 | A snap valve security inspection ware for on-line measuring on site |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110260033A CN110260033A (en) | 2019-09-20 |
| CN110260033B true CN110260033B (en) | 2024-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910450991.6A Active CN110260033B (en) | 2019-05-28 | 2019-05-28 | A snap valve security inspection ware for on-line measuring on site |
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| Country | Link |
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| CN (1) | CN110260033B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840944A (en) * | 2016-04-29 | 2016-08-10 | 合肥安科威尔环境科技有限公司 | Pipeline joint leakage protecting device |
| CN210566617U (en) * | 2019-05-28 | 2020-05-19 | 江阴市富仁高科股份有限公司 | A breaking valve security check ware for on-spot on-line measuring |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6550314B2 (en) * | 2001-03-19 | 2003-04-22 | Sis-Tech Applications, L.L.P. | Apparatus and method for on-line detection of leaky valves |
| CN202108995U (en) * | 2011-06-07 | 2012-01-11 | 上海东富龙科技股份有限公司 | Hermetic sealing device |
| CN204314032U (en) * | 2014-11-28 | 2015-05-06 | 武汉工程大学 | High-temperature pipe flange compactedness test macro |
| CN106932147A (en) * | 2015-12-30 | 2017-07-07 | 核动力运行研究所 | A kind of hoop type flange leakage monitor |
| CN107559510A (en) * | 2016-06-30 | 2018-01-09 | 天津市富宇精细化工有限公司 | A kind of ether conveyance conduit |
| CN106764458A (en) * | 2016-12-28 | 2017-05-31 | 核动力运行研究所 | Flange leakage monitoring device and high energy pipe network flange leakage monitoring regulator control system |
-
2019
- 2019-05-28 CN CN201910450991.6A patent/CN110260033B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840944A (en) * | 2016-04-29 | 2016-08-10 | 合肥安科威尔环境科技有限公司 | Pipeline joint leakage protecting device |
| CN210566617U (en) * | 2019-05-28 | 2020-05-19 | 江阴市富仁高科股份有限公司 | A breaking valve security check ware for on-spot on-line measuring |
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|---|---|
| CN110260033A (en) | 2019-09-20 |
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