CN109538854B - Automatic alarming equipotential bridging device for flange leakage - Google Patents
Automatic alarming equipotential bridging device for flange leakage Download PDFInfo
- Publication number
- CN109538854B CN109538854B CN201910042280.5A CN201910042280A CN109538854B CN 109538854 B CN109538854 B CN 109538854B CN 201910042280 A CN201910042280 A CN 201910042280A CN 109538854 B CN109538854 B CN 109538854B
- Authority
- CN
- China
- Prior art keywords
- semi
- annular
- flange
- annular connecting
- alarm
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 239000002341 toxic gas Substances 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 description 10
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/006—Attachments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2201/00—Special arrangements for pipe couplings
- F16L2201/30—Detecting leaks
Abstract
The invention discloses an automatic flange leakage alarm equipotential bridging device which has a simple structure, can effectively avoid electrostatic effect, can provide power for a leakage alarm device, and can effectively alarm and monitor pipeline leakage in real time. The flange leakage automatic alarm equipotential bridging device comprises two semi-annular connecting sleeves; the two semi-annular connecting sleeves are provided with combustible toxic gas detection alarm devices; a leakage detection groove is arranged in the semi-annular connecting sleeve; the semi-annular connecting sleeve is provided with a conductive wire, and two ends of the conductive wire extend into the semi-annular flange clamping groove; the solar cell panel is arranged on the outer circumferential surface of the semi-annular connecting sleeve; and a wireless communication module is arranged on the combustible toxic gas detection alarm. By adopting the flange leakage automatic alarm equipotential bridging device, the leakage can be monitored in real time, the electrostatic effect can be avoided, and the alarm monitoring energy can be naturally provided.
Description
Technical Field
The invention relates to an automatic alarming equipotential bridging device for eliminating electrostatic hazard in pipeline transportation, in particular to a flange leakage automatic alarming equipotential bridging device.
Background
It is well known that: in the petrochemical industry, it is necessary to eliminate potential differences that may exist between adjacent 2 flanges on a pipeline. In petrochemical equipment, inflammable, explosive and toxic medium is transported in pipeline, static electricity may be generated or stray current may occur in the pipeline, and there is great potential difference in the flange joint between two pipelines due to poor conductivity of the bolts, and spark may be generated easily to cause serious fire explosion accident. Therefore, the flanged connection of the pipe is usually bridged by a metal conductor.
The current flange equipotential bridging mode comprises the following modes:
1. The invention discloses a flange equipotential jumper with the application number 201820378765.2, which belongs to a device for eliminating static hazard and comprises a conductor connecting piece and a fixing piece, wherein two ends of the conductor connecting piece are respectively positioned on the outer surfaces of an upper flange and a lower flange and are attached to the outer surfaces of the upper flange and the lower flange, the fixing piece is in an inverted U shape, a lower side arm of the fixing piece is tightly attached to one end of the conductor connecting piece on the lower flange, an upper side arm of the fixing piece is positioned on the upper part of the upper flange, and a jackscrew screw penetrates through the upper side arm and presses the other end of the conductor connecting piece. The flange equipotential jumper of the invention adopts flexible conductor and unique jackscrew design, and the equipotential jumper of each model can be used on flanges with large range of specifications, thereby having strong universality; an operator can complete the installation of the equipotential jumper by only one adjustable spanner, and the installation is quick and safe without firing; operators can conveniently and rapidly detach and repair or replace the equipotential jumper at any time without risk in safety and shutdown loss, and the maintenance is convenient.
Although the flange equipotential jumper can be conveniently connected and installed at any time, the flange equipotential jumper is complex in structure and high in manufacturing cost.
2. As an example of a flange electrostatic conductor according to chinese patent application number 201520629104.9, the present invention provides a flange electrostatic conductor, which is disposed between two adjacent flanges, the flange electrostatic conductor comprising: the base is matched with one flange of the two adjacent flanges; the adjusting rod is telescopically arranged on the base and is matched with the other flange of the two adjacent flanges. The technical scheme of the invention can effectively solve the problems of complicated working procedures and large workload of flange bridging in the prior art.
Although, the flange electrostatic conductor can effectively solve the problems of complicated flange bridging procedures and large workload in the prior art. But it is prone to fall between the flanges, making the mounting less stable.
3. As in chinese patent application No. 201521074552.3, the present invention provides an anti-static flange bridging device, comprising: the clamping piece, the conductive element, be located the last bolt of clamping piece up end and be located the lower bolt of clamping piece lower terminal surface, the up end of clamping piece and the internal thread hole of symmetry have been seted up to the lower terminal surface of clamping piece, go up bolt and lower bolt and wear to establish respectively in the internal thread hole that corresponds, go up the bolt and be used for fixed conductive element and last flange, lower bolt is used for fixed conductive element and lower flange.
Although, the anti-static flange bridging device is simple in structure, convenient and safe to install and detach, and good in anti-static effect, and meanwhile, the sealing performance of the flange is not affected. However, the conductive element of the anti-static flange bridging device is arranged on the inner side of the clamping piece clamping groove, so that the anti-static flange bridging device is easy to damage and inconvenient to check.
The bridging connection device can not detect whether leakage occurs at the connection part of the pipeline; and the leakage cannot be timely alarmed.
Disclosure of Invention
The invention aims to solve the technical problem of providing the flange leakage automatic alarm equipotential bridging device which has a simple structure, can effectively avoid the electrostatic effect, can provide a power supply for a leakage alarm device, and can effectively alarm and monitor the leakage of a pipeline in real time.
The technical scheme adopted for solving the technical problems is as follows: the flange leakage automatic alarm equipotential bridging device comprises two semi-annular connecting sleeves; connecting structures are arranged at two ends of the semi-annular connecting sleeve; the two semi-annular connecting sleeves are connected through connecting structures at two ends of the semi-annular connecting sleeve to form an annular jacket;
The inner side of the semi-annular connecting sleeve is provided with a semi-annular flange clamping groove; a leakage detection groove is formed in the bottom of the semicircular flange clamping groove;
A conductive wire is arranged in the semi-annular connecting sleeve; two ends of the conductive wire extend to two side walls of the semi-annular flange clamping groove respectively and extend into the semi-annular flange clamping groove through the conductive column; the outer side of the semi-annular connecting sleeve is provided with a combustible toxic gas detection alarm; the detection probe of the combustible toxic gas detection alarm extends into the leakage detection groove;
the outer surfaces of the semi-annular connecting sleeves are respectively provided with an annular mounting groove; a solar panel is arranged in the annular mounting groove; a storage battery for storing electric energy generated by the solar cell panel is arranged on the semi-annular connecting sleeve; the solar panel is electrically connected with a storage battery, and the storage battery is electrically connected with a combustible toxic gas detection alarm; and a wireless communication module is arranged on the combustible toxic gas detection alarm.
Further, a U-shaped clamping groove is formed in the semi-annular connecting sleeve; the bottom of the U-shaped clamping groove is provided with a conductive wire; and a U-shaped clamping piece is arranged in the U-shaped clamping groove to cover the conductive wire.
Further, flanges are arranged on two sides of the semi-annular connecting sleeve.
Further, the connecting structure comprises connecting plates arranged at two ends of the semi-annular connecting sleeve, and the connecting plates between the two semi-annular connecting sleeves are connected through bolts.
Preferably, the semi-annular connecting sleeve and the U-shaped clamping piece are made of rubber.
Preferably, the conductive wire and the conductive post are both made of copper.
The beneficial effects of the invention are as follows: according to the flange leakage automatic alarm equipotential bridging device, as the two semi-annular connecting sleeves are adopted, the whole flange connection position of the pipeline is covered by the two semi-annular connecting sleeves, so that the whole flange connection is sealed to a certain extent, and the two semi-annular connecting sleeves are provided with the combustible toxic gas detection alarm; the leakage detection groove is formed in the semi-annular connecting sleeve, so that when leakage occurs at the flange, leaked gas in the pipeline can enter the leakage detection groove, and then can be monitored in real time through the combustible toxic gas detection alarm, and the leakage is alarmed.
Secondly, be provided with the electric wire on the semi-annular adapter sleeve, the both ends of electric wire extend to semi-annular flange clamp inslot, consequently the electric connection between two adjacent flanges can be realized to the electric wire to avoid the influence that the static effect brought to conveying pipeline.
Finally, the solar cell panel is arranged on the outer circumferential surface of the semi-annular connecting sleeve, electric energy generated by the solar cell panel is stored in the storage battery, and the storage battery provides power for the combustible toxic gas detector, so that natural energy supply can be realized, and real-time monitoring and alarming can be realized. Meanwhile, by arranging the wireless communication module on the combustible toxic gas detection alarm, the information about whether the flange joint is leaked or not can be timely transmitted to the central control center, and whether the flange joint is leaked or not can be monitored in real time.
Drawings
FIG. 1 is an exploded schematic view of an automatic flange leakage warning equipotential bridging device in an embodiment of the present invention;
FIG. 2 is a perspective view of a flange leakage auto-alarm equipotential bonding apparatus in accordance with an embodiment of the present invention;
FIG. 3 is a front view of a flange leakage automatic alarm equipotential bonding apparatus according to an embodiment of the present invention;
FIG. 4 is a top view of a flange leakage automatic alarm equipotential bridging device in an embodiment of the present invention;
FIG. 5 is a side view of a flange leakage auto-alarm equipotential bonding set according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view A-A of FIG. 3;
FIG. 7 is a cross-sectional view B-B in FIG. 4;
The figures indicate: the device comprises a 1-semi-annular connecting sleeve, a 2-U-shaped clamping piece, a 3-flange, a 4-connecting plate, a 5-combustible toxic gas detection alarm, a 6-semi-annular flange clamping groove, a 7-leakage detection groove, an 8-conductive wire, a 9-conductive column, a 10-solar panel and an 11-wireless communication module.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in fig. 1 to 7, the automatic flange leakage alarming equipotential bridging device comprises two semi-annular connecting sleeves 1; connecting structures are arranged at two ends of the semi-annular connecting sleeve 1; the two semi-annular connecting sleeves 1 are connected through connecting structures at two ends of the semi-annular connecting sleeves 1 to form an annular jacket;
The inner side of the semi-annular connecting sleeve 1 is provided with a semi-annular flange clamping groove 6; a leakage detection groove 7 is formed in the bottom of the semi-annular flange clamping groove 6;
A conductive wire 8 is arranged in the semi-annular connecting sleeve 1; two ends of the conductive wire 8 extend to two side walls of the semi-annular flange clamping groove 6 respectively and extend into the semi-annular flange clamping groove 6 through the conductive column 9; the outer side of the semi-annular connecting sleeve 1 is provided with a combustible toxic gas detection alarm instrument 5; the detection probe of the combustible toxic gas detection alarm 5 extends into the leakage detection groove 7;
The outer surfaces of the semi-annular connecting sleeves 1 are respectively provided with an annular mounting groove 12; the solar panel 10 is installed in the annular installation groove 12; a storage battery for storing electric energy generated by the solar panel 10 is arranged on the semi-annular connecting sleeve 1; the solar panel 10 is electrically connected with a storage battery, and the storage battery is electrically connected with a combustible toxic gas detection alarm 5; the combustible toxic gas detection alarm 5 is provided with a wireless communication module 11.
In the using process, the two semi-annular connecting sleeves 1 are arranged at the flange connection part of the pipeline, so that the two semi-annular connecting sleeves 1 clamp the flange and wrap the flange connection part. The two semi-annular connecting sleeves 1 are adopted, and the positions of the whole flange connection of the pipeline are covered by the two semi-annular connecting sleeves 1, so that the whole flange connection is sealed to a certain extent, and the two semi-annular connecting sleeves 1 are provided with the combustible toxic gas detection alarm instrument 5; a leakage detection groove 7 is arranged in the semi-annular connecting sleeve 1, so that if leakage occurs at the flange, the leaked gas firstly enters the leakage detection groove 7, and then the detection and the alarm are realized through the combustible toxic gas detection alarm instrument 5.
Secondly, the semi-annular connecting sleeve 1 is provided with a conductive wire 8, two ends of the conductive wire 8 extend into the side wall of the semi-annular flange clamping groove 6 and extend into the semi-annular flange clamping groove 6 through the conductive column 9, so that the conductive wire 8 can realize electric connection between two adjacent flanges, and the influence of electrostatic effect on a conveying pipeline is avoided.
Finally, the solar cell panel is arranged on the outer circumferential surface of the semi-annular connecting sleeve, electric energy generated by the solar cell panel is stored in the storage battery, and the storage battery provides power for the combustible toxic gas detector, so that natural energy supply can be realized, and real-time monitoring and alarming can be realized. Meanwhile, by arranging the wireless communication module on the combustible toxic gas detection alarm, the information about whether the flange joint is leaked or not can be timely transmitted to the central control center, and whether the flange joint is leaked or not can be monitored in real time.
In order to facilitate the arrangement of the conductive wire 8 in the semi-annular connecting sleeve 1 and to realize the detection and maintenance of the conductive wire 8, further, a U-shaped clamping groove 13 is arranged on the semi-annular connecting sleeve 1; the bottom of the U-shaped clamping groove 13 is provided with a conductive wire 8; the U-shaped clamping piece 2 is arranged in the U-shaped clamping groove 13 to cover the conductive wire 8.
In order to facilitate forming a certain seal between the semi-annular connecting sleeve 1 and the pipeline and avoiding the pipeline from leaking and diffusing, further, flanges 3 are arranged on two sides of the semi-annular connecting sleeve 1.
In order to facilitate the connection of the two semi-annular connecting sleeves 1, preferably, the connecting structure comprises connecting plates 4 arranged at two ends of the semi-annular connecting sleeves 1, and the connecting plates 4 between the two semi-annular connecting sleeves 1 are connected through bolts. The connecting structure can also adopt the same connecting structure as the anchor ear.
In order to reduce the cost, the semi-annular connecting sleeve 1 and the U-shaped clamping piece 2 are preferably made of rubber.
In order to improve the conductivity, the conductive wire 8 and the conductive post 9 are preferably made of copper.
Claims (5)
1. Automatic alarm equipotential bridging device is revealed to flange, its characterized in that: comprises two semi-annular connecting sleeves (1); connecting structures are arranged at two ends of the semi-annular connecting sleeve (1); the two semi-annular connecting sleeves (1) are connected through connecting structures at two ends of the semi-annular connecting sleeves (1) to form an annular jacket;
the inner side of the semi-annular connecting sleeve (1) is provided with a semi-annular flange clamping groove (6); a leakage detection groove (7) is formed in the bottom of the semi-annular flange clamping groove (6);
A conductive wire (8) is arranged in the semi-annular connecting sleeve (1); two ends of the conductive wire (8) extend to two side walls of the semi-annular flange clamping groove (6) respectively and extend into the semi-annular flange clamping groove (6) through the conductive column (9); the outer side of the semi-annular connecting sleeve (1) is provided with a combustible toxic gas detection alarm instrument (5); the detection probe of the combustible toxic gas detection alarm (5) extends into the leakage detection groove (7);
The outer surfaces of the semi-annular connecting sleeves (1) are respectively provided with an annular mounting groove (12); a solar panel (10) is arranged in the annular mounting groove (12); a storage battery for storing electric energy generated by the solar panel (10) is arranged on the semi-annular connecting sleeve (1); the solar panel (10) is electrically connected with a storage battery, and the storage battery is electrically connected with a combustible toxic gas detection alarm (5); the combustible toxic gas detection alarm (5) is provided with a wireless communication module (11);
a U-shaped clamping groove (13) is formed in the semi-annular connecting sleeve (1); the bottom of the U-shaped clamping groove (13) is provided with a conductive wire (8); the U-shaped clamping piece (2) is arranged in the U-shaped clamping groove (13) to cover the conductive wire (8).
2. The flange leakage automatic alarm equipotential bridging device of claim 1 wherein: flanges (3) are arranged on two sides of the semi-annular connecting sleeve (1).
3. The flange leakage automatic alarm equipotential bridging device of claim 2 wherein: the connecting structure comprises connecting plates (4) arranged at two ends of the semi-annular connecting sleeves (1), and the connecting plates (4) between the two semi-annular connecting sleeves (1) are connected through bolts.
4. The flange leakage automatic alarm equipotential bridging device of claim 1 wherein: the semi-annular connecting sleeve (1) and the U-shaped clamping piece (2) are made of rubber.
5. The flange leakage automatic alarm equipotential bridging device of claim 4 wherein: the conducting wires (8) and the conducting columns (9) are made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042280.5A CN109538854B (en) | 2019-01-17 | 2019-01-17 | Automatic alarming equipotential bridging device for flange leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042280.5A CN109538854B (en) | 2019-01-17 | 2019-01-17 | Automatic alarming equipotential bridging device for flange leakage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109538854A CN109538854A (en) | 2019-03-29 |
| CN109538854B true CN109538854B (en) | 2024-04-19 |
Family
ID=65837862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910042280.5A Active CN109538854B (en) | 2019-01-17 | 2019-01-17 | Automatic alarming equipotential bridging device for flange leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109538854B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630362B (en) * | 2019-09-21 | 2021-01-19 | 合肥神舟催化净化器股份有限公司 | Automobile exhaust purification catalyst |
| CN113309913A (en) * | 2021-05-20 | 2021-08-27 | 禹州市洁通塑胶有限公司 | Assembled clamp for drainage pipe fitting |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330720A (en) * | 1993-02-23 | 1994-07-19 | Hughes Aircraft Company | System for detecting fugitive emissions |
| CN202118407U (en) * | 2011-06-08 | 2012-01-18 | 天津市众合气体有限公司 | Anti-static flange connection disc |
| CN104595726A (en) * | 2015-01-19 | 2015-05-06 | 傅永财 | Natural gas pipeline system having leakage warming function |
| CN105114820A (en) * | 2015-10-08 | 2015-12-02 | 苏州市海神达机械科技有限公司 | Pipeline flange |
| CN105673966A (en) * | 2016-04-22 | 2016-06-15 | 武汉工程大学 | Leakage protection and monitoring system for high-temperature flange |
| CN208331498U (en) * | 2018-06-08 | 2019-01-04 | 山西伟能新型建材有限公司 | A kind of sealing and connecting device of utilidor |
| CN209569434U (en) * | 2019-01-17 | 2019-11-01 | 四川省安科技术咨询有限公司 | Flange reveals automatic alarm equipotential crossover assembly |
-
2019
- 2019-01-17 CN CN201910042280.5A patent/CN109538854B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330720A (en) * | 1993-02-23 | 1994-07-19 | Hughes Aircraft Company | System for detecting fugitive emissions |
| CN202118407U (en) * | 2011-06-08 | 2012-01-18 | 天津市众合气体有限公司 | Anti-static flange connection disc |
| CN104595726A (en) * | 2015-01-19 | 2015-05-06 | 傅永财 | Natural gas pipeline system having leakage warming function |
| CN105114820A (en) * | 2015-10-08 | 2015-12-02 | 苏州市海神达机械科技有限公司 | Pipeline flange |
| CN105673966A (en) * | 2016-04-22 | 2016-06-15 | 武汉工程大学 | Leakage protection and monitoring system for high-temperature flange |
| CN208331498U (en) * | 2018-06-08 | 2019-01-04 | 山西伟能新型建材有限公司 | A kind of sealing and connecting device of utilidor |
| CN209569434U (en) * | 2019-01-17 | 2019-11-01 | 四川省安科技术咨询有限公司 | Flange reveals automatic alarm equipotential crossover assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109538854A (en) | 2019-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109538854B (en) | Automatic alarming equipotential bridging device for flange leakage | |
| CN102540034A (en) | High-voltage transformer bushing tap grounding on-line monitoring device | |
| CN105826748A (en) | Vacuum high-voltage insulation structure for vacuum environment simulator power supply or cable transferring test | |
| CN211203235U (en) | Pipeline flange insulation assembly with protection structure | |
| CN202221661U (en) | Penetration reactor containment device for armored thermocouples | |
| CN105627024A (en) | Pipe repair device assembly | |
| CN209569434U (en) | Flange reveals automatic alarm equipotential crossover assembly | |
| CN209196699U (en) | A kind of mining intelligent control type LED anti-explosion lamp | |
| CN215674795U (en) | Natural gas transmission pipeline gas leakage detection device | |
| CN209569433U (en) | Flange equipotential bridging set | |
| CN212646952U (en) | Current transformer disconnection warning detection device | |
| CN102568781B (en) | Transformer low-voltage side outgoing line-leading device | |
| CN211627798U (en) | Fixing device for sulfur hexafluoride density relay detection conversion interface | |
| CN203927994U (en) | A kind of flame detection device that ensures sealing property that is beneficial to | |
| CN210865857U (en) | Sleeve pipe end screen earthing device | |
| CN215956018U (en) | Improved touchable front connector | |
| CN204461703U (en) | A kind of device detecting low low temp. electric fly-ash separator heat-exchanger rig refrigerant leakage | |
| CN220171222U (en) | Long oil and gas pipeline insulating joint on-line monitoring device | |
| CN210953754U (en) | Modularization cathodic protection testing arrangement | |
| CN216056280U (en) | Cable joint of integrated RFID temperature measurement | |
| CN205319000U (en) | Electric reactor | |
| CN218917593U (en) | Automatic reminding device for power-off of uncovering machine | |
| CN211348367U (en) | Overhead fault indicator | |
| CN216562743U (en) | SF6 current transformer detects mouth and moves down device | |
| CN212537037U (en) | Electrostatic explosion bridging device is prevented to flange |
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 |