CN110013629B - Flame arrester with function of monitoring flame retardant failure - Google Patents
Flame arrester with function of monitoring flame retardant failure Download PDFInfo
- Publication number
- CN110013629B CN110013629B CN201810019323.3A CN201810019323A CN110013629B CN 110013629 B CN110013629 B CN 110013629B CN 201810019323 A CN201810019323 A CN 201810019323A CN 110013629 B CN110013629 B CN 110013629B
- Authority
- CN
- China
- Prior art keywords
- fire
- flame
- net
- downstream
- upstream
- 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
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 13
- 239000003063 flame retardant Substances 0.000 title description 22
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title description 2
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 54
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 230000000979 retarding effect Effects 0.000 claims description 35
- 239000000523 sample Substances 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910000601 superalloy Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Public Health (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fire Alarms (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The invention relates to a flame arrester with a function of monitoring flame arrester failure, which mainly solves the problems that whether the flame arrester successfully catches flame or not cannot be known in the prior art, and the effectiveness of the flame arrester cannot be mastered in time. The invention adopts a flame arrester with the function of monitoring the failure of flame arrester, which comprises a flame arrester shell, a flame arrester element, an upstream detection net, a downstream detection net, a signal processing unit, a common electrode, an upstream detection net electrode, a downstream detection net electrode and an insulating medium, wherein the flame arrester is respectively provided with one detection net on the flame arrester element and the downstream, the common electrode, the upstream detection net electrode and the downstream detection net electrode are respectively added on the flame arrester element, the upstream detection net and the downstream detection net and are respectively connected with the signal processing unit, and the insulating medium is positioned between the flame arrester element, the detection net and the flame arrester shell.
Description
Technical Field
The invention relates to a flame arrester with a function of monitoring flame-retarding failure.
Background
Flame arresters are devices for preventing the propagation of flames of flammable gases and flammable liquids, typically mounted on ports or ducts of the device, which function to allow the passage of a medium, but must be able to extinguish the flames. The key point of the flame arrester is a flame arrester element, the principle of extinguishing flame is that the flame temperature is rapidly reduced mainly through a heat transfer effect, and meanwhile, the concentration of active free radicals in the flame is reduced through a wall effect, so that chemical reaction in the flame is slowed down until stopping, and the flame is prevented from spreading.
The existing flame arresters are made of stainless steel and have porous structures, and when flame passes through the stainless steel holes, the flame temperature is reduced.
The current flame arresters have the following problems in the use process: whether the flame arrester is successful or not cannot be known, and the effectiveness of the flame arrester cannot be mastered in time.
A pipeline fire arrestor of CN204469063 application adopts the fire-blocking core structure, does not have the monitoring fire-blocking failure function. If the fire-retarding core fails due to the problems of processing quality, material deposition, high detonation power and the like, whether the functional effect of the fire-retarding device is normal cannot be mastered and known in time.
Disclosure of Invention
The invention aims to solve the technical problems that whether the flame arrester is successful in flame retarding cannot be known in the prior art, and the effectiveness of the flame arrester cannot be mastered in time.
In order to solve the problems, the invention adopts the following technical scheme: the utility model provides a flame arrester with monitor fire-retardant inefficacy function, includes flame arrester shell, fire-retardant component, upstream detection net, downstream detection net, signal processing unit, common electrode, upstream detection net electrode, downstream detection net electrode, insulating medium, the flame arrester respectively is equipped with one at the fire-retardant component upper and lower reaches and surveys the net, common electrode, upstream detection net electrode, downstream detection net electrode respectively add on fire-retardant component, upstream detection net, downstream detection net, and link to each other with signal processing unit respectively, insulating medium is located between fire-retardant component, detection net and the flame arrester shell.
In the above technical solution, preferably, the signal processing unit is a signal processing module for monitoring whether a weak current passes through the whole loop.
In the above solution, preferably, the flame arrester housing is a metal housing providing mechanical support and connection of the flame arrester element.
In the above technical solution, preferably, the spacing between the upstream detecting net, the downstream detecting net and the fire retarding element is between 0.3cm and 1.0cm.
In the above technical solution, preferably, the fire-retardant element has a porous structure, which plays a role in extinguishing a flame.
In the above technical solution, preferably, the material of the fire retardant element is selected from stainless steel, superalloy, aluminum.
In the above technical solution, preferably, the porosity of the porous structure of the fire-retardant element is 5% to 80%.
In the above technical solution, preferably, the common electrode is an electrode applied to the fire-retardant element, to which a voltage is applied; the upstream detection net electrode and the downstream detection net electrode are electrodes added on the detection net, and the polarity of the electrodes is opposite to that of the common electrode; the voltage applied between the common electrode and the upstream and downstream detection net electrodes is 12v-36v.
In the above technical solution, preferably, the insulating medium is an insulating medium for avoiding conduction between the fire retarding element and the detecting net and the fire retarding device casing.
In the above technical solution, preferably, the upstream detecting net is a layer of stainless steel wire net located on a side of the flame arrester where flame may exist, and the downstream detecting net is a layer of stainless steel wire net located on a side of the flame arrester where flame transmission needs to be prevented, where the side is protected.
According to the invention, the detection nets are added before and after the fire retarding element, and whether the fire retarding unit successfully prevents the propagation of the flame or not can be monitored by utilizing the conductivity of the flame, so that a reliable means is provided for the effectiveness monitoring of the fire retarding device; the detection net can also play a role in rough filtering impurities in the pipeline and reducing the blocking of the fire-retardant element, and a better technical effect is achieved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a cross-sectional view of a firestop element, a detection net.
In fig. 1 and 2, 1 flame arrester housing, 2 flame arrester element, 3 upstream detecting net, 4 downstream detecting net, 5 signal processing unit, 6 common electrode, 7 upstream detecting net electrode, 8 downstream detecting net electrode, 9 insulating medium.
The present invention is further illustrated by, but not limited to, the following examples.
Detailed Description
[ example 1 ]
The invention is further described below with reference to the drawings and examples. The novel flame arrester shown in fig. 1 and 2 comprises a flame arrester shell 1, a flame arrester element 2, an upstream detection net 3, a downstream detection net 4, a signal processing unit 5, a common electrode 6, an upstream detection net electrode 7, a downstream detection net electrode 8 and an insulating medium 9. The fire arrestor is characterized in that a detection net is arranged on the upper and the lower stream of the fire-retarding element respectively, a common electrode, an upstream detection net electrode and a downstream detection net electrode are respectively arranged on the fire-retarding element, the upstream detection net and the downstream detection net and are respectively connected with the signal processing unit, and an insulating medium is positioned among the fire-retarding element, the detection net and the fire arrestor shell.
The spacing between the upstream detecting net 3, the downstream detecting net 4 and the fire retarding element 2 is 0.3cm.
The voltage applied between the common electrode 6 and the upstream probe mesh electrode 7 and the downstream probe mesh electrode 8 was 36v.
The fire-retardant element has a porous structure and plays a role in extinguishing flame. The material of the fire-retardant element is selected from stainless steel, and the porosity of the porous structure of the fire-retardant element is 5%.
When a flame is transferred between the upstream detecting net 3 and the fire retarding element 2 from upstream, a loop is formed between the upstream detecting net 3 and the fire retarding element 2 due to unidirectional conductivity of the flame, and a current is generated in the whole loop due to voltage between the upstream detecting net 3 and the fire retarding element 2, and the signal processing unit 5 detects the current and can send out a signal indicating that the flame is transferred to the fire retarding device.
When the flame penetrates the fire-retarding element 2 and reaches the downstream detecting net 4, a loop is formed between the fire-retarding element 2 and the downstream detecting net 4, and as a voltage exists between the fire-retarding element 2 and the downstream detecting net 4, a current is generated in the whole loop, and the signal processing unit 5 detects the current, so that the flame can be judged to reach the position between the fire-retarding element 2 and the downstream detecting net 4, and the flame penetration of the fire-retarding element is determined, and the fire retarding process is invalid.
In practice, since flames may be transferred to the fire-retarding unit from upstream or downstream, the following logic structure may be set: when the flame is measured on one side and not on the other side, the flame can be considered to be transmitted to the flame arrester from the side with the signal and the flame arrester is successful in flame arrester, when the flame is measured on both sides, the flame can be considered to break through the flame arrester, and according to the front and back of the alarm signals on both sides, the flame can be judged to be transmitted to the flame arrester from which side.
[ example 2 ]
The spacing between the upstream and downstream probe nets 3, 4 and the firestop element 2 was 1.0cm according to the conditions described in example 1.
The voltage applied between the common electrode 6 and the upstream probe mesh electrode 7 and the downstream probe mesh electrode 8 was 12v.
The fire-retardant element has a porous structure and plays a role in extinguishing flame. The material of the fire-retardant element is selected from high-temperature alloy. The porosity of the porous structure of the firestop element was 80%.
When a flame is transferred between the upstream detecting net 3 and the fire retarding element 2 from upstream, a loop is formed between the upstream detecting net 3 and the fire retarding element 2 due to unidirectional conductivity of the flame, and a current is generated in the whole loop due to voltage between the upstream detecting net 3 and the fire retarding element 2, and the signal processing unit 5 detects the current and can send out a signal indicating that the flame is transferred to the fire retarding device.
When the flame penetrates the fire-retarding element 2 and reaches the downstream detecting net 4, a loop is formed between the fire-retarding element 2 and the downstream detecting net 4, and as a voltage exists between the fire-retarding element 2 and the downstream detecting net 4, a current is generated in the whole loop, and the signal processing unit 5 detects the current, so that the flame can be judged to reach the position between the fire-retarding element 2 and the downstream detecting net 4, and the flame penetration of the fire-retarding element is determined, and the fire retarding process is invalid.
In practice, since flames may be transferred to the fire-retarding unit from upstream or downstream, the following logic structure may be set: when the flame is measured on one side and not on the other side, the flame can be considered to be transmitted to the flame arrester from the side with the signal and the flame arrester is successful in flame arrester, when the flame is measured on both sides, the flame can be considered to break through the flame arrester, and according to the front and back of the alarm signals on both sides, the flame can be judged to be transmitted to the flame arrester from which side.
[ example 3 ]
The spacing between the upstream and downstream probe nets 3, 4 and the firestop element 2 was 0.6cm according to the conditions described in example 1.
The voltage applied between the common electrode 6 and the upstream probe mesh electrode 7 and the downstream probe mesh electrode 8 was 12v.
The fire-retardant element has a porous structure and plays a role in extinguishing flame. The material of the fire-retardant element is selected from aluminum. The porosity of the porous structure of the firestop element was 55%.
When a flame is transferred between the upstream detecting net 3 and the fire retarding element 2 from upstream, a loop is formed between the upstream detecting net 3 and the fire retarding element 2 due to unidirectional conductivity of the flame, and a current is generated in the whole loop due to voltage between the upstream detecting net 3 and the fire retarding element 2, and the signal processing unit 5 detects the current and can send out a signal indicating that the flame is transferred to the fire retarding device.
When the flame penetrates the fire-retarding element 2 and reaches the downstream detecting net 4, a loop is formed between the fire-retarding element 2 and the downstream detecting net 4, and as a voltage exists between the fire-retarding element 2 and the downstream detecting net 4, a current is generated in the whole loop, and the signal processing unit 5 detects the current, so that the flame can be judged to reach the position between the fire-retarding element 2 and the downstream detecting net 4, and the flame penetration of the fire-retarding element is determined, and the fire retarding process is invalid.
In practice, since flames may be transferred to the fire-retarding unit from upstream or downstream, the following logic structure may be set: when the flame is measured on one side and not on the other side, the flame can be considered to be transmitted to the flame arrester from the side with the signal and the flame arrester is successful in flame arrester, when the flame is measured on both sides, the flame can be considered to break through the flame arrester, and according to the front and back of the alarm signals on both sides, the flame can be judged to be transmitted to the flame arrester from which side.
[ example 4 ]
The spacing between the upstream and downstream probe nets 3, 4 and the firestop element 2 was 0.8cm according to the conditions described in example 1.
The voltage applied between the common electrode 6 and the upstream probe mesh electrode 7 and the downstream probe mesh electrode 8 was 36v.
The fire-retardant element has a porous structure and plays a role in extinguishing flame. The material of the fire-retardant element is selected from high-temperature alloy. The porosity of the porous structure of the firestop element was 55%.
When a flame is transferred between the upstream detecting net 3 and the fire retarding element 2 from upstream, a loop is formed between the upstream detecting net 3 and the fire retarding element 2 due to unidirectional conductivity of the flame, and a current is generated in the whole loop due to voltage between the upstream detecting net 3 and the fire retarding element 2, and the signal processing unit 5 detects the current and can send out a signal indicating that the flame is transferred to the fire retarding device.
When the flame penetrates the fire-retarding element 2 and reaches the downstream detecting net 4, a loop is formed between the fire-retarding element 2 and the downstream detecting net 4, and as a voltage exists between the fire-retarding element 2 and the downstream detecting net 4, a current is generated in the whole loop, and the signal processing unit 5 detects the current, so that the flame can be judged to reach the position between the fire-retarding element 2 and the downstream detecting net 4, and the flame penetration of the fire-retarding element is determined, and the fire retarding process is invalid.
In practice, since the flame may be transferred to the firestop unit from upstream or downstream, the following logical structure may be set: when the flame is measured on one side and not on the other side, the flame can be considered to be transmitted to the flame arrester from the side with the signal and the flame arrester is successful in flame arrester, when the flame is measured on both sides, the flame can be considered to break through the flame arrester, and according to the front and back of the alarm signals on both sides, the flame can be judged to be transmitted to the flame arrester from which side.
According to the invention, the detection nets are added before and after the fire retarding element, and whether the fire retarding unit successfully prevents the propagation of the flame or not can be monitored by utilizing the conductivity of the flame, so that a reliable means is provided for the effectiveness monitoring of the fire retarding device; the detection net can also play a role in rough filtering impurities in the pipeline and reducing the blocking of the fire-retardant element, and a better technical effect is achieved.
Claims (4)
1. The fire arrestor with the function of monitoring fire-retarding failure comprises a fire arrestor shell, a fire-retarding element, an upstream detecting net, a downstream detecting net, a signal processing unit, a common electrode, an upstream detecting net electrode, a downstream detecting net electrode and an insulating medium, wherein the fire arrestor is respectively provided with one detecting net at the upper part and the lower part of the fire-retarding element, the common electrode, the upstream detecting net electrode and the downstream detecting net electrode are respectively added on the fire-retarding element, the upstream detecting net and the downstream detecting net and are respectively connected with the signal processing unit, the insulating medium is positioned between the fire-retarding element, the detecting net and the fire arrestor shell,
the common electrode is an electrode applied to the fire retarding element, and voltage is applied to the common electrode; the upstream detection net electrode and the downstream detection net electrode are electrodes added on the detection net, and the polarity of the electrodes is opposite to that of the common electrode; the voltage applied between the common electrode and the upstream and downstream probe mesh electrodes is 12v-36v,
the flame arrester housing is a metal housing that provides mechanical support and attachment of the flame arrester element,
the insulating medium is used for preventing the fire retarding element, the detecting net and the fire retarding device shell from conducting,
the spacing between the upstream detection net, the downstream detection net and the fire retarding element is between 0.3cm and 1.0cm,
the fire-retarding element has a porous structure, plays a role in extinguishing flame, and has a porosity of 5% -80%.
2. The fire arrestor with a function of monitoring fire-arrestor failure as defined in claim 1, wherein the signal processing unit is a signal processing module for monitoring whether weak current passes through the whole loop.
3. The flame arrester with a function of monitoring fire-retarding failure as claimed in claim 1, wherein the material of the fire-retarding element is selected from stainless steel, superalloy, aluminum.
4. The flame arrester of claim 1, wherein the upstream detecting mesh is a stainless steel mesh on a side of the flame arrester where flames may occur, and the downstream detecting mesh is a stainless steel mesh on a side of the flame arrester where flame transmission is to be prevented, which is a protected end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019323.3A CN110013629B (en) | 2018-01-09 | 2018-01-09 | Flame arrester with function of monitoring flame retardant failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019323.3A CN110013629B (en) | 2018-01-09 | 2018-01-09 | Flame arrester with function of monitoring flame retardant failure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110013629A CN110013629A (en) | 2019-07-16 |
| CN110013629B true CN110013629B (en) | 2024-03-05 |
Family
ID=67187739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810019323.3A Active CN110013629B (en) | 2018-01-09 | 2018-01-09 | Flame arrester with function of monitoring flame retardant failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110013629B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660227B (en) * | 2020-12-22 | 2024-08-13 | 中国石油化工股份有限公司 | Flame retardant performance evaluation method and system for flame retardant device and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688573A (en) * | 2011-03-23 | 2012-09-26 | 王兴章 | Oil gas pipeline flame arrester |
| CN203147811U (en) * | 2013-03-14 | 2013-08-21 | 华油天然气广安有限公司 | Regenerative gas heating furnace flame detection device of LNG production device |
| CN106975183A (en) * | 2017-05-18 | 2017-07-25 | 盐城欧润石化设备制造有限公司 | A kind of alarm type flame arrester for pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2016134902A (en) * | 2014-01-28 | 2018-03-02 | Элмак Текнолоджиз Лимитед | Flame arresters |
-
2018
- 2018-01-09 CN CN201810019323.3A patent/CN110013629B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688573A (en) * | 2011-03-23 | 2012-09-26 | 王兴章 | Oil gas pipeline flame arrester |
| CN203147811U (en) * | 2013-03-14 | 2013-08-21 | 华油天然气广安有限公司 | Regenerative gas heating furnace flame detection device of LNG production device |
| CN106975183A (en) * | 2017-05-18 | 2017-07-25 | 盐城欧润石化设备制造有限公司 | A kind of alarm type flame arrester for pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110013629A (en) | 2019-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110013629B (en) | Flame arrester with function of monitoring flame retardant failure | |
| CN105160794B (en) | Low-voltage distribution cabinet fire alarm protective device and temperature checking method | |
| CN110013631B (en) | Flame arrester capable of monitoring flame retarding condition | |
| CN212342018U (en) | Building engineering regulator cubicle monitoring management system | |
| CN212135613U (en) | Building fire alarm device | |
| CN212235718U (en) | Fire control unit who has fire alarm function based on thing networking | |
| CN206239942U (en) | Fire trace tube formula temperature-sensitive self-starting control system | |
| CN202855013U (en) | Fire alarm device | |
| CN207838070U (en) | The spark arrester of back-fire relief failure can be monitored | |
| CN105303749A (en) | Fire monitoring device | |
| CN212809400U (en) | Fire intelligent alarm system for fire engineering | |
| CN202802585U (en) | Wind generating set cable fire protection device | |
| CN212586994U (en) | Anti-error alarm spraying equipment with smoke temperature sensing device | |
| CN205942979U (en) | Marine fire alarm device | |
| CN102247683B (en) | Electroless self-starting fire-extinguishing device | |
| CN221327159U (en) | Alarm device for fire control detection | |
| CN211836020U (en) | Automatic fire extinguishing system for residential district control | |
| CN211068886U (en) | Electrical fire monitoring detector | |
| CN207867664U (en) | Warning device | |
| CN213276892U (en) | Wireless combined type electrical fire detector with moisture-proof function | |
| CN111905301A (en) | Intelligent monitoring fire extinguishing system for locomotive | |
| CN203673613U (en) | Smoke detecting and automatic fire-extinguishing system for clothing warehouse | |
| CN204406595U (en) | A kind of prior-warning device of Novel intelligent inside fire | |
| CN216083887U (en) | Smoke induction alarm based on NB-IoT | |
| CN217366963U (en) | Flame arrester for combustion furnace |
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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240307 Address after: No. 22, Chaoyangmen street, Chaoyang District, Beijing 100020 Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Country or region after: China Patentee after: Sinopec Safety Engineering Research Institute Co.,Ltd. Address before: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Country or region before: China Patentee before: SINOPEC Research Institute OF SAFETY ENGINEERING |