CN112957638B - Fire arrester with changeable structure - Google Patents

Fire arrester with changeable structure Download PDF

Info

Publication number
CN112957638B
CN112957638B CN202110300556.2A CN202110300556A CN112957638B CN 112957638 B CN112957638 B CN 112957638B CN 202110300556 A CN202110300556 A CN 202110300556A CN 112957638 B CN112957638 B CN 112957638B
Authority
CN
China
Prior art keywords
fixedly connected
main part
sealing
work
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110300556.2A
Other languages
Chinese (zh)
Other versions
CN112957638A (en
Inventor
方士豪
龙海涛
郁勇
李绍利
姚相俊
吴翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Fushen Special Valve Co ltd
Original Assignee
Jiangsu Fushen Special Valve Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Fushen Special Valve Co ltd filed Critical Jiangsu Fushen Special Valve Co ltd
Priority to CN202110300556.2A priority Critical patent/CN112957638B/en
Publication of CN112957638A publication Critical patent/CN112957638A/en
Application granted granted Critical
Publication of CN112957638B publication Critical patent/CN112957638B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C4/00Flame traps allowing passage of gas but not of flame or explosion wave
    • A62C4/02Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

The invention discloses a flame arrester with a changeable structure, which comprises a main body working device, wherein the left side of the main body working device is communicated with a primary inlet device, the left side of the primary inlet device is communicated with a common input pipe, the right side of the main body working device is communicated with a common output pipe, one side of the inner wall of the main body working device is fixedly connected with a limiting plate, an outlet pipe penetrates through the right side of the surface of the main body working device, and the surface of the primary inlet device is hinged with a sealing bin cover. This spark arrester of changeable structure, through the setting of elementary entering device, the device can tie up the compression to first order sealing spring through sensitive operation rope, and then in time adjusts the valve switching of first order control processing pipe middle-right-hand member for the device can be in the isolated inside and outside contact of self of very first time, the effectual further expansion of having avoided the conflagration, and relevant structure is comparatively simple reliable, and the stability of operation is stronger.

Description

Fire arrester with changeable structure
Technical Field
The invention relates to the technical field of flame arresters, in particular to a flame arrester with a changeable structure.
Background
Flame arrestors are also commonly used in pipelines for the transport of flammable gases. If flammable gases are ignited, the gas flame will propagate throughout the piping network. To prevent this risk, flame arrestors are also used. Flame arrestors may also be used on pipelines with open fire equipment to prevent backfire accidents. It does not prevent open flame combustion of combustible gases and liquids that are open burning. Flame arrestors have been used in the petroleum industry and are later used extensively in the mining, coal mining, water transportation and chemical industries. In the oil industry, flame arrestors are widely used in storage tanks for oil and petroleum products. When a tank storing light petroleum products is exposed to open fire or a lightning strike, a fire may be caused. In order to prevent such a risk, flame arresters are used.
Along with the development of economy, more and more petrochemical fuel need use the pipeline transportation, in case take place the condition of a fire during pipeline transportation, will seriously influence the safety of whole pipeline, and modern society often adopts the spark arrester to carry out the pipeline back-fire relief, but modern spark arrester often efficiency is lower when using, in case the conflagration takes place, the spark arrester is very easily out of control.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a flame arrester with a changeable structure, which solves the problems that the efficiency of the modern flame arrester is low when the modern flame arrester is used, and the flame arrester is easy to lose control once a fire disaster occurs.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a spark arrester of changeable structure, includes main part equipment, main part equipment's left side intercommunication has elementary entering device, elementary entering device's left side intercommunication has ordinary input tube, main part equipment's right side intercommunication has ordinary output tube, one side fixedly connected with limiting plate of main part equipment inner wall, the right side on main part equipment surface runs through there is the stand-off, elementary entering device's surface articulates there is sealed cang gai, main part equipment includes main part work communicating pipe, the right side on main part work communicating pipe surface is through connecting steady piece fixedly connected with work motor case, motor cabinet fixedly connected with work motor is passed through on the right side of work motor incasement wall, shaft coupling fixedly connected with initiative rotation axis is passed through to the one end of work motor output shaft, the left end of initiative rotation axis runs through work motor case and main part work communicating pipe in proper order and extends to the inside of main part work communicating pipe, the fixed surface of initiative rotation axis is connected with first conical gear, one side meshing on first conical gear surface has second conical gear, the second cone department fixedly connected with straight thread axle of straight thread axle, the surface threaded shaft sliding block of straight thread.
Preferably, the surface of the sliding thread block is rotatably connected with a sealing baffle plate through a connecting shaft, and one side of the surface of the sealing baffle plate is fixedly connected with a clamping contact spring.
Preferably, a sliding block is fixedly connected to one side of the surface of the sliding thread block.
Preferably, the surface sliding connection of sliding block has the guide bar, the both ends of guide bar respectively with the both sides fixed connection of main part work communicating pipe inner wall.
Preferably, elementary entering device includes that the preliminary order control handles the pipe, the vertical sill bar of fixedly connected with work between the both sides of preliminary order control processing pipe inner wall, the middle fixedly connected with preliminary order sealing spring on the vertical sill bar right side of work.
Preferably, the right end of the primary sealing spring is fixedly connected with a cone sealing block, and horizontal moving plates are fixedly connected to the top and the bottom of the cone sealing block.
Preferably, a rolling groove is formed in one side of the surface of the horizontal moving plate, a rolling ball is connected to the surface of the inner wall of the rolling groove in a rolling mode, and a sensitive operation rope is fixedly connected to one side of the surface of the horizontal moving plate.
Preferably, an inflow sealing plate is fixedly connected between two sides of the inner wall of the primary-stage control treatment pipe, and a sealing groove is formed in the surface of the inflow sealing plate.
(III) advantageous effects
The invention provides a flame arrester with a changeable structure. Compared with the prior art, the method has the following beneficial effects:
(1) The flame arrester with the changeable structure comprises a primary control processing pipe through a primary inlet device, a working vertical bottom rod is fixedly connected between two sides of the inner wall of the primary control processing pipe, a primary sealing spring is fixedly connected in the middle of the right side of the working vertical bottom rod, a cone sealing block is fixedly connected to the right end of the primary sealing spring, a horizontal moving plate is fixedly connected to the top of the cone sealing block and the two sides of the bottom of the cone sealing block, a rolling groove is formed in one side of the surface of the horizontal moving plate, a rolling ball is connected to the surface of the inner wall of the rolling groove in a rolling mode, a sensitive operation rope is fixedly connected to one side of the surface of the horizontal moving plate, an inflow sealing plate is fixedly connected between two sides of the inner wall of the primary control processing pipe, a sealing groove is formed in the surface of the inflow sealing plate, the device can tightly tie the primary sealing spring through the sensitive operation rope and compress the valve opening and closing of the right end of the primary control processing pipe in time, the device can isolate the connection between the inner portion and the outer portion in the first time, further expansion of fire disasters is effectively avoided, related structures are simple, and operation stability is high.
(2) This spark arrester with changeable structure, include main part work communicating pipe through main part equipment, the right side on main part work communicating pipe surface is through connecting stable piece fixedly connected with work motor case, the right side of work motor incasement wall is through motor cabinet fixedly connected with work motor, shaft coupling fixedly connected with initiative rotation axis is passed through to the one end of work motor output shaft, the left end of initiative rotation axis runs through work motor case and main part work communicating pipe in proper order and extends to the inside of main part work communicating pipe, the fixed surface of initiative rotation axis is connected with first conical gear, one side meshing on first conical gear surface has second conical gear, the axle center fixedly connected with straight-line threaded shaft of second conical gear department, the surperficial threaded shaft of straight-line threaded shaft has the slip thread piece, the surface of slip thread piece rotates through the connecting axle and is connected with seal baffle, one side fixedly connected with chucking contact spring on seal baffle surface, one side fixedly connected with sliding block on slip thread piece surface, the surface sliding surface of sliding block is connected with the guide pole, both ends of guide pole respectively with the both sides fixed connection of main part work inner wall of main part work communicating pipe, through the setting of main part equipment, the device can pass through the rotation of work motor, it shifts up to drive relevant slip thread piece and seal baffle when promoting the surface of pipe, the surface of the fairlead to pass through effectual operation tongue, make things convenient for the follow-up, the post maintenance person, the output tube, the post is convenient.
(3) This spark arrester with changeable structure, left side intercommunication through main part equipment has elementary access device, elementary access device's left side intercommunication has ordinary input tube, main part equipment's right side intercommunication has ordinary output tube, one side fixedly connected with limiting plate of main part equipment inner wall, the delivery pipe has been run through on the right side on main part equipment surface, elementary access device's surperficial articulated sealed cang gai in surface, through main part equipment, elementary access device, ordinary input tube, ordinary output tube, the limiting plate, the combination setting of delivery pipe and sealed cangai, the device is whole to carry out twice control to the flaming tongue that gets into the pipeline, the effectual flaming tongue that avoids passes outward, and through the setting of sealed cangai, the staff can convenient and fast change sensitive operation rope, through the setting of limiting plate, can effectually avoid the screw block that slides to shift up and exceed standard, and relevant device simple structure, easily the staff maintains fast.
Drawings
FIG. 1 is a cross-sectional view of a structure of the present invention;
FIG. 2 is a schematic structural view of the main body working apparatus of the present invention;
FIG. 3 is a schematic view of the primary entry device of the present invention;
FIG. 4 is an enlarged view of a portion of the structure of FIG. 3;
fig. 5 is a front view of the structure of the present invention.
In the figure, 1, a main body working device; 2. a primary entry device; 3. a common input tube; 4. a common output pipe; 5. a limiting plate; 6. a lead-out pipe; 7. sealing the bin cover; 11. a main body working communicating pipe; 12. a working motor box; 13. a working motor; 14. a driving rotating shaft; 15. a first bevel gear; 16. a second bevel gear; 17. a linear threaded shaft; 18. sliding the threaded block; 19. sealing the baffle plate; 110. a chucking contact spring; 111. a slider; 112. a guide rod; 21. a primary control processing tube; 22. a working vertical bottom bar; 23. a primary seal spring; 24. a cone sealing block; 25. horizontally moving the plate; 26. a rolling groove; 27. a rolling ball; 28. a sensitive operating cord; 29. flowing into a sealing plate; 210. and sealing grooves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention provides a technical solution: the utility model provides a spark arrester of alterable structure, including main part equipment 1, main part equipment 1's left side intercommunication has elementary access device 2, elementary access device 2's left side intercommunication has ordinary input tube 3, main part equipment 1's right side intercommunication has ordinary output tube 4, one side fixedly connected with limiting plate 5 of main part equipment 1 inner wall, main part equipment 1 surperficial right side is run through there is the stand-off pipe 6, elementary access device 2's surface articulates there is sealed cang gai 7, through main part equipment 1, elementary access device 2, ordinary input tube 3, ordinary output tube 4, limiting plate 5, the joint setting of stand-off pipe 6 and sealed cang gai 7, the device is whole can carry out twice control to the flame tongue that gets into the pipeline, the effectual tongue flame spread of avoiding, and through the setting of sealed cang gai 7, the staff can convenient and fast change sensitive operation rope 28, through limiting plate 5's setting, can effectually avoid sliding thread piece 18 to move up and exceed standard, and relevant device simple structure, easily the staff maintains fast.
The main body working device 1 comprises a main body working communicating pipe 11, the right side of the surface of the main body working communicating pipe 11 is fixedly connected with a working motor box 12 through a connecting stabilizing block, the right side of the inner wall of the working motor box 12 is fixedly connected with a working motor 13 through a motor base, one end of an output shaft of the working motor 13 is fixedly connected with a driving rotating shaft 14 through a shaft coupling, the left end of the driving rotating shaft 14 sequentially penetrates through the working motor box 12 and the main body working communicating pipe 11 and extends to the inside of the main body working communicating pipe 11, the surface of the driving rotating shaft 14 is fixedly connected with a first bevel gear 15, one side of the surface of the first bevel gear 15 is meshed with a second bevel gear 16, a linear threaded shaft 17 is fixedly connected at the axis of the second bevel gear 16, and a sliding threaded block 18 is connected on the surface of the linear threaded shaft 17, the surface of slip thread piece 18 rotates through the connecting axle and is connected with seal baffle 19, one side fixedly connected with chucking contact spring 110 on seal baffle 19 surface, one side fixedly connected with sliding block 111 on slip thread piece 18 surface, the sliding surface of sliding block 111 is connected with guide rod 112, guide rod 112's both ends respectively with the both sides fixed connection of main part work communicating pipe 11 inner wall, setting through main part equipment 1, the device can pass through the rotation of work motor 13, it shifts up when promoting to drive relevant slip thread piece 18 and seal baffle 19, with the surface blocking of outlet pipe 6, effectually avoid the flame tongue to pass outward through pipeline outlet pipe 6 and ordinary output tube 4 continuation, and not only convenient operation, and do benefit to the accurate operation of staff, make things convenient for later maintenance.
The primary inlet device 2 comprises a primary control processing tube 21, a working vertical bottom rod 22 is fixedly connected between two sides of the inner wall of the primary control processing tube 21, a primary sealing spring 23 is fixedly connected in the middle of the right side of the working vertical bottom rod 22, a cone sealing block 24 is fixedly connected at the right end of the primary sealing spring 23, a horizontal moving plate 25 is fixedly connected to the top and the bottom of the cone sealing block 24, a rolling groove 26 is formed in one side of the surface of the horizontal moving plate 25, a rolling ball 27 is connected to the surface of the inner wall of the rolling groove 26 in a rolling manner, a sensitive operation rope 28 is fixedly connected to one side of the surface of the horizontal moving plate 25, an inflow sealing plate 29 is fixedly connected between two sides of the inner wall of the primary control processing tube 21, a sealing groove 210 is formed in the surface of the inflow sealing plate 29, the primary inlet device 2 can tightly bind and compress the primary sealing spring 23 through the sensitive operation rope 28, and timely adjust the opening and closing of a valve at the right end of the primary control processing tube 21, so that the device can be in self-isolated from the external connection at the first time, further expansion of a fire disaster is effectively avoided, the related structure is simple and reliable, and the operation stability of the device is strong.
When the external fire disaster generates high temperature, the sensitive operation rope 28 is blown by the high temperature, the primary sealing spring 23 pushes the cone sealing block 24 to block the sealing groove 210 in the sealing plate 29, meanwhile, the rolling balls 27 on two sides of the horizontal moving plate 25 roll on the inner wall of the primary control processing pipe 21, the left end of the surface of the primary inlet device 2 is closed, meanwhile, the working motor 13 in the working motor box 12 is started, the sliding threaded block 18 is driven to move upwards along the guide rod 112 through the sliding block 111 by the rotation of the driving rotating shaft 14, the first conical gear 15, the second conical gear 16 and the linear threaded shaft 17, when the sealing baffle plate 19 contacts the inner surface on the left side of the outlet pipe 6, the clamping contact spring 110 is compressed, the outlet pipe 6 is blocked, the surface of the common outlet pipe 4 is blocked, two sides of the flame arrester are effectively and quickly blocked, when the top of the sliding threaded block 18 contacts the limiting plate 5, the working motor 13 stops rotating, the working motor 13 is reversely started, the device can be restored, the sealing bin cover 7 is opened, the sensitive operation rope 28 can be reinstalled, and the device can be completely restored after the device is completely used.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (2)

1. A spark arrester with a changeable structure comprises a main body working device (1), and is characterized in that: the left side intercommunication of main part equipment (1) has primary access device (2), the left side intercommunication of primary access device (2) has ordinary input tube (3), the right side intercommunication of main part equipment (1) has ordinary output tube (4), one side fixedly connected with limiting plate (5) of main part equipment (1) inner wall, the right side on main part equipment (1) surface is run through and is had stand-off (6), the surface of primary access device (2) articulates there is sealed cang gai (7), main part equipment (1) includes main part work communicating pipe (11), the right side on main part work communicating pipe (11) surface is through connecting stable piece fixedly connected with work motor case (12), the right side of work motor case (12) inner wall is through motor cabinet fixedly connected with work motor (13), the one end of work motor (13) output shaft is through initiative shaft coupling fixedly connected with initiative rotation axis (14), the left end of initiative rotation axis (14) runs through work motor case (12) and main part work communicating pipe (11) in proper order and extends to the inside of main part work communicating pipe (11), the fixed surface of rotation axis (14) is connected with second conical gear (15), conical gear (15) one side meshing, a linear threaded shaft (17) is fixedly connected to the axis of the second conical gear (16), a sliding threaded block (18) is in threaded connection with the surface of the linear threaded shaft (17), a sealing baffle plate (19) is rotatably connected to the surface of the sliding threaded block (18) through a connecting shaft, and a clamping contact spring (110) is fixedly connected to one side of the surface of the sealing baffle plate (19);
sliding thread piece (18) one side fixedly connected with sliding block (111) on surface, the surface sliding connection of sliding block (111) has guide rod (112), the both ends of guide rod (112) respectively with the both sides fixed connection of main part work communicating pipe (11) inner wall, elementary admission gear (2) are including the preliminary order control processing pipe (21), the vertical sill bar of fixedly connected with work (22) between the both sides of preliminary order control processing pipe (21) inner wall, the middle fixedly connected with preliminary order sealing spring (23) on the vertical sill bar of work (22) right side, the right-hand member fixedly connected with cone sealing block (24) of preliminary order sealing spring (23), the equal fixedly connected with horizontal movable plate (25) in both sides of cone sealing block (24) top and bottom, rolling groove (26) have been seted up to one side on horizontal movable plate (25) surface, the inner wall surface roll connection of rolling groove (26) has rolling ball (27), one side fixedly connected with sensitive operation rope (28) on horizontal movable plate (25) surface.
2. A re-configurable flame arrestor as defined in claim 1, wherein: an inflow sealing plate (29) is fixedly connected between two sides of the inner wall of the primary control processing pipe (21), and a sealing groove (210) is formed in the surface of the inflow sealing plate (29).
CN202110300556.2A 2021-03-22 2021-03-22 Fire arrester with changeable structure Active CN112957638B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110300556.2A CN112957638B (en) 2021-03-22 2021-03-22 Fire arrester with changeable structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110300556.2A CN112957638B (en) 2021-03-22 2021-03-22 Fire arrester with changeable structure

Publications (2)

Publication Number Publication Date
CN112957638A CN112957638A (en) 2021-06-15
CN112957638B true CN112957638B (en) 2023-02-21

Family

ID=76277992

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110300556.2A Active CN112957638B (en) 2021-03-22 2021-03-22 Fire arrester with changeable structure

Country Status (1)

Country Link
CN (1) CN112957638B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114963567B (en) * 2022-05-13 2023-11-28 哈尔滨玻璃钢研究院有限公司 Fire-proof cover for fuel oil air heater

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103090071A (en) * 2013-02-06 2013-05-08 吉林省富宁石油装备工程有限公司 Fusing safety valve of oil pipelines and gas pipelines
CN109026531A (en) * 2018-08-21 2018-12-18 石山霞 A kind of vane change device of wind-driven generator
CN208816710U (en) * 2018-08-15 2019-05-03 浙江忠华消防器材有限公司 A kind of novel fire extinguisher valve
CN110575634A (en) * 2019-08-08 2019-12-17 泰兴市光华石油化工机械制造有限公司 flame arrester capable of monitoring flame-retardant condition
CN210623720U (en) * 2019-09-27 2020-05-26 江苏复森特种阀门有限公司 Explosion-proof valve for explosive dust environment
CN210623689U (en) * 2019-01-26 2020-05-26 青岛四维流体设备有限公司 Novel tempering fire stopping device for gas supply system
CN211245282U (en) * 2019-08-16 2020-08-14 泰兴市光华石油化工机械制造有限公司 Novel vertical pipeline flame arrester

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103090071A (en) * 2013-02-06 2013-05-08 吉林省富宁石油装备工程有限公司 Fusing safety valve of oil pipelines and gas pipelines
CN208816710U (en) * 2018-08-15 2019-05-03 浙江忠华消防器材有限公司 A kind of novel fire extinguisher valve
CN109026531A (en) * 2018-08-21 2018-12-18 石山霞 A kind of vane change device of wind-driven generator
CN210623689U (en) * 2019-01-26 2020-05-26 青岛四维流体设备有限公司 Novel tempering fire stopping device for gas supply system
CN110575634A (en) * 2019-08-08 2019-12-17 泰兴市光华石油化工机械制造有限公司 flame arrester capable of monitoring flame-retardant condition
CN211245282U (en) * 2019-08-16 2020-08-14 泰兴市光华石油化工机械制造有限公司 Novel vertical pipeline flame arrester
CN210623720U (en) * 2019-09-27 2020-05-26 江苏复森特种阀门有限公司 Explosion-proof valve for explosive dust environment

Also Published As

Publication number Publication date
CN112957638A (en) 2021-06-15

Similar Documents

Publication Publication Date Title
CN112957638B (en) Fire arrester with changeable structure
CN113915641B (en) Intelligent gas burner ignition system
CN110901872A (en) Methanol fuel double-wall pipe inerting system
CN103407567B (en) The integrated power control unit of liquefied natural gas (LNG) power ship
CN113144472A (en) Detachable flame arrester
CN209294617U (en) A kind of self-closing connector of liquefied gas angle valve
CN210215270U (en) Carbon washing tower synthesis gas inverted blind plate system
CN216715372U (en) Pneumatic ball valve cuts off fast
CN113531593A (en) Safety device of gas stove
CN108869822A (en) The stop valve that timing is closed when less than certain flow
CN101912673B (en) Prevention and collection method for oil and gas fire disasters
DE2751142A1 (en) FLUID LEAK INDICATOR
CN215371223U (en) Security pipeline valve suitable for petrochemical system
CN204034116U (en) Extinguishing device and acoustic-optic alarm thereof between cooking operation
CN107289147B (en) Inclined wedge swelled blank-plate valve
CN208124291U (en) A kind of device for preventing gas backstreaming from causing explosion
CN215831985U (en) Safety device of gas stove
CN210237669U (en) Device for preventing smoke valve from accumulating dust for smelting
CN219432530U (en) Fireproof check valve for flue
CN219517628U (en) Flame arrester for low-concentration gas combustion system
CN213901083U (en) Torch positive pressure nitrogen seal anti-backfire system
CN202302250U (en) Anti-tempering valve set
CN112594674A (en) Detection boiler to water level in pot and boiler pressure
CN207414709U (en) A kind of pipeline mending-leakage with pressure is welded and fixed frame
CN207034299U (en) Gate valve and pipe-line system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant