CN110230716A - A kind of direct-firing low speed coal mill mixes furnace cigarette explosion-protection equipment and its working method - Google Patents
A kind of direct-firing low speed coal mill mixes furnace cigarette explosion-protection equipment and its working method Download PDFInfo
- Publication number
- CN110230716A CN110230716A CN201910447550.0A CN201910447550A CN110230716A CN 110230716 A CN110230716 A CN 110230716A CN 201910447550 A CN201910447550 A CN 201910447550A CN 110230716 A CN110230716 A CN 110230716A
- Authority
- CN
- China
- Prior art keywords
- explosion
- plug
- protection equipment
- supporting block
- low speed
- 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.)
- Granted
Links
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 title claims abstract description 22
- 238000010304 firing Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 4
- 125000003003 spiro group Chemical group 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0466—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
-
- 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
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Furnace Details (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a kind of direct-firing low speed coal mills to mix furnace cigarette explosion-protection equipment and its working method, including stove pipe road, explosion-protection equipment and fixed lid；Pass through bolt hole on the wall in stove pipe road, flange and bolt are connected with explosion-protection equipment, and gasket is provided between flange and the outer wall in stove pipe road, and the top of explosion-protection equipment is connect with fixed cover spiro line, the interior welds of explosion-protection equipment have supporting block, and sealing ring is provided on the inside of supporting block, and running through in supporting block has plug, the lower end of plug is located in the link slot of spacing head upper surface, and the upper end of plug is provided with mark post, and mark post is through fixed lid, compressed spring is cased on mark post simultaneously, the side wall of explosion-protection equipment offers air vent, the upper surface of spacing head is welded with branch fastener.The direct-firing low speed coal mill mixes furnace cigarette explosion-protection equipment, when addition furnace smoke is excessive, can carry out pressure release to equipment inside, prevent equipment internal pressure excessive, be conducive to the stable operation of equipment.
Description
Technical field
The present invention relates to power station equipment technical field, specially a kind of direct-firing low speed coal mill mix furnace cigarette explosion-protection equipment and
Its working method.
Background technique
Low speed coal mill is the main equipment of heat power station coal dust preparation system, is widely used in the coal for crushing various hardness
Charcoal, such as application No. is 201510197911.2 Chinese patents, and during heat power station use, use is all hot empty
Gas is easy explosion, and therefore, take mixes flue gas more in hot-air now, to prevent from exploding, but in the process of furnace conveyor cigarette
In, stove pipe road internal pressure may be made excessively high, easily equipment is impacted, influence the normal operation of other equipment, therefore,
It needs that a kind of explosion-protection equipment is arranged on stove pipe road.
Summary of the invention
The purpose of the present invention is to provide a kind of direct-firing low speed coal mills to mix furnace cigarette explosion-protection equipment and its working method, with
It solves existing direct-firing low speed coal mill mentioned above in the background art and mixes furnace cigarette explosion-protection equipment, in the process of furnace conveyor cigarette
In, stove pipe road internal pressure may be made excessively high, influence the problem of other equipment operate normally.
Technical solution used by the present invention solves the above problems is: a kind of direct-firing low speed coal mill mixes the explosion-proof dress of furnace cigarette
It sets, including stove pipe road, explosion-protection equipment and fixed lid；It is characterized in that on the wall in the stove pipe road by bolt hole, flange and
Bolt is connected with explosion-protection equipment, and gasket is provided between flange and the outer wall in stove pipe road, and the top of explosion-protection equipment
End is connect with fixed cover spiro line, and the interior welds of the explosion-protection equipment have supporting block, and sealing ring is provided on the inside of supporting block,
And through there is plug in supporting block, the lower end of the plug is located in the link slot of spacing head upper surface, and the upper end of plug
It is provided with mark post, and mark post is covered through fixed, while compressed spring is cased on mark post, the side wall of the explosion-protection equipment offers
Air vent, the upper surface of the spacing head are welded with branch fastener.
Further, the air vent runs through the side wall of explosion-protection equipment, and air vent is located at the lower section of fixed lid, and puts
Stomata is provided with multiple.
Further, the supporting block is annular structure, and the axis of supporting block and the axis of plug coincide.
Further, the plug is round-like structure, and the diameter of plug lower end is less than the diameter of the upper end, and blocks up
The maximum gauge of head is greater than the maximum gauge of supporting block inner hole.
Further, the upper end equidistant arrangement of the spacing head has several branch fasteners, and under spacing head and supporting block
It installs in parallel each other end face.
Further, the lower end of the mark post and plug are welded to connect, and mark post is located at the intermediate position of plug upper end.
The direct-firing low speed coal mill mixes the working method of furnace cigarette explosion-protection equipment, characterized in that process is as follows: working as furnace
When air pressure inside smoke pipeline is excessively high, air pressure is jacked up plug by spacing head upwards, compresses plug to compressed spring,
And mark post is driven to move up in the fixed through-hole covered, after plug is separated with the sealing ring on the inside of supporting block, gas is just
By being flowed out at the gap between plug and supporting block, and it is discharged by the air vent on explosion-protection equipment side wall, and then in equipment
Portion carries out pressure release processing, reduces the air pressure inside equipment；After air pressure inside stove pipe road reduces, compressed spring is by plug
It is pushed to supporting block, and then plug is made to hold out against the sealing ring on the inside of supporting block, the opening of supporting block can be sealed, limited
Branch fastener on potential head, can make between the lower end surface of supporting block and spacing head that there are certain gaps, facilitate the outflow of gas, make
User can judge the reset case of plug by the graduation mark on mark post.
Compared with prior art, the present invention having the following advantages that and effect: it is explosion-proof that the direct-firing low speed coal mill mixes furnace cigarette
Device can carry out pressure release to equipment inside, prevent equipment internal pressure excessive, be conducive to equipment when addition furnace smoke is excessive
Stable operation；Air vent is offered on the side wall of explosion-protection equipment, and air vent is located at the lower section of fixed lid, is arranged in this way
To the effect that air pressure is discharged, air pressure can be made to be discharged along the side wall in stove pipe road, be internally provided with supporting block in explosion-protection equipment
And plug, play the role of sealing plug to supporting block inner hole by sealing ring, and be provided with mark post above plug, mark post
It is covered through fixed, is provided with the scale situation observed on mark post conducive to user in this way, and then judge on the inside of plug and supporting block
Contact situation between sealing ring.
Detailed description of the invention
Fig. 1 is the explosion-protection equipment schematic diagram of internal structure of the embodiment of the present invention；
Fig. 2 is the plug and supporting block status architecture schematic diagram of the embodiment of the present invention；
Fig. 3 is the air vent side structure schematic view of the embodiment of the present invention；
Fig. 4 is the explosion-protection equipment present invention looks up structural representation of the embodiment of the present invention；
Fig. 5 is the spacing head structural schematic diagram of the embodiment of the present invention；
Fig. 6 is the explosion-protection equipment mounting structure schematic diagram of the embodiment of the present invention.
In figure: 1, stove pipe road；2, explosion-protection equipment；3, fixed lid；4, air vent；5, bolt hole；6, flange；7, bolt；
8, supporting block；9, sealing ring；10, plug；11, spacing head；12, compressed spring；13, mark post；14, gasket；15, link slot；
16, branch fastener.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Fig. 1-6 is please referred to, the direct-firing low speed coal mill in the present embodiment mixes furnace cigarette explosion-protection equipment, including stove pipe road 1,
Explosion-protection equipment 2, fixed lid 3, air vent 4, bolt hole 5, flange 6, bolt 7, supporting block 8, sealing ring 9, plug 10, spacing head
11, compressed spring 12, mark post 13, gasket 14, link slot 15 and branch fastener 16.
It is connected by bolt hole 5, flange 6 and bolt 7 with explosion-protection equipment 2 on the wall in stove pipe road 1, and flange 6 and furnace
Gasket 14 is provided between the outer wall of smoke pipeline 1, and the top of explosion-protection equipment 2 is threadedly coupled with fixed lid 3, explosion-protection equipment
2 interior welds have supporting block 8, and the inside of supporting block 8 is provided with sealing ring 9, and through there is plug 10 in supporting block 8,
The lower end of plug 10 is located in the link slot 15 of 11 upper surface of spacing head, and the upper end of plug 10 is provided with mark post 13, and marks
Bar 13 runs through fixed lid 3, while compressed spring 12 is cased on mark post 13, and the side wall of explosion-protection equipment 2 offers air vent 4, limit
First 11 upper surface is welded with branch fastener 16.
In the present embodiment, air vent 4 runs through the side wall of explosion-protection equipment 2, and air vent 4 is located at the lower section of fixed lid 3, and
Air vent 4 be provided with it is multiple, in this way setting play the role of by air pressure be discharged.
Supporting block 8 is annular structure, and the axis of supporting block 8 and the axis of plug 10 coincide, and setting in this way is advantageous
Being coupled between plug 10 and supporting block 8.
Plug 10 is round-like structure, and the diameter of 10 lower end of plug is less than the diameter of the upper end, and plug 10 is most
Major diameter is greater than the maximum gauge of 8 inner hole of supporting block, and setting in this way avoids plug 10 from passing through from the inside of supporting block 8, is conducive to
Sealing of the plug 10 to 8 inner hole of supporting block.
The upper end equidistant arrangement of spacing head 11 has several branch fasteners 16, and spacing head 11 and the lower end surface of supporting block 8 are mutual
To install in parallel, setting, which is played, in this way avoids spacing head 11 from being conducive to the normal row of gas to the blocking of through-hole in supporting block 8
Out.
The lower end of mark post 13 and plug 10 are welded to connect, and mark post 13 is located at the intermediate position of 10 upper end of plug, sets in this way
The reset case played convenient for users to judging plug 10 by the graduation mark on mark post 13 is set, avoids plug 10 not to support
The sealing ring 9 of 8 inside of block holds out against generation gas leakage.
Working principle: when mixing furnace cigarette explosion-protection equipment using the direct-firing low speed coal mill, as shown in figures 1 to 6, when furnace cigarette
When air pressure inside pipeline 1 is excessively high, air pressure by spacing head 11 by plug 10 upwards jack up, make plug 10 to compressed spring 12 into
Row compression, and mark post 13 is driven to move up in the through-hole on fixed lid 3, when the sealing ring 9 of 8 inside of plug 10 and supporting block
After separation, gas will pass through to flow out at the gap between plug 10 and supporting block 8, and by the air vent 4 on 2 side wall of explosion-protection equipment
Discharge, and then pressure release processing is carried out to equipment inside, reduce the air pressure inside equipment；Air pressure drop inside stove pipe road 1
After low, compressed spring 12 pushes plug 10 to supporting block 8, and then plug 10 is made to hold out against the sealing ring 9 on the inside of supporting block 8, just
The opening of supporting block 8 can be sealed, as shown in Fig. 1,2 and Fig. 5, branch fastener 16 in spacing head 11 can make supporting block 8
Lower end surface and spacing head 11 between there are certain gaps, facilitate the outflow of gas, user can pass through the quarter on mark post 13
Degree line judges the reset case of plug 10, a series of above behaviour for just completing the direct-firing low speed coal mill and mixing furnace cigarette explosion-protection equipment
Make, the content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology should belong to guarantor of the invention in made change without departing from the spirit and scope of the invention
Protect range.
Claims (7)
1. a kind of direct-firing low speed coal mill mixes furnace cigarette explosion-protection equipment, including stove pipe road (1), explosion-protection equipment (2) and fixed lid
(3)；It is characterized in that passing through bolt hole (5), flange (6) and bolt (7) and explosion-protection equipment (2) on the wall of the stove pipe road (1)
It is connected, and is provided with gasket (14) between flange (6) and the outer wall of stove pipe road (1), and the top of explosion-protection equipment (2)
It is threadedly coupled with fixed lid (3), the interior welds of the explosion-protection equipment (2) have supporting block (8), and set on the inside of supporting block (8)
It is equipped with sealing ring (9), and through having plug (10) in supporting block (8), the lower end of the plug (10) is located at spacing head (11)
In the link slot (15) of upper surface, and the upper end of plug (10) is provided with mark post (13), and mark post (13) is through fixed lid
(3), it while on mark post (13) is cased with compressed spring (12), the side wall of the explosion-protection equipment (2) offers air vent (4), described
The upper surface of spacing head (11) is welded with branch fastener (16).
2. direct-firing low speed coal mill according to claim 1 mixes furnace cigarette explosion-protection equipment, characterized in that the air vent
(4) run through the side wall of explosion-protection equipment (2), and air vent (4) is located at the lower section of fixed lid (3), and air vent (4) be provided with it is more
It is a.
3. direct-firing low speed coal mill according to claim 1 mixes furnace cigarette explosion-protection equipment, characterized in that the supporting block
It (8) is annular structure, and the axis of supporting block (8) and the axis of plug (10) coincide.
4. direct-firing low speed coal mill according to claim 1 mixes furnace cigarette explosion-protection equipment, characterized in that the plug (10)
For round-like structure, and the diameter of plug (10) lower end is less than the diameter of the upper end, and the maximum gauge of plug (10) is greater than
The maximum gauge of supporting block (8) inner hole.
5. direct-firing low speed coal mill according to claim 1 mixes furnace cigarette explosion-protection equipment, characterized in that the spacing head
(11) upper end equidistant arrangement has several branch fasteners (16), and spacing head (11) and the lower end surface of supporting block (8) are parallel each other
Installation.
6. direct-firing low speed coal mill according to claim 1 mixes furnace cigarette explosion-protection equipment, characterized in that the mark post (13)
Lower end and plug (10) be welded to connect, and mark post (13) is located at the intermediate position of plug (10) upper end.
7. a kind of work side for mixing furnace cigarette explosion-protection equipment such as direct-firing low speed coal mill of any of claims 1-6
Method, characterized in that process is as follows: when stove pipe road (1) internal air pressure is excessively high, air pressure passes through spacing head (11) for plug
(10) it jacks up upwards, compresses plug (10) to compressed spring (12), and drive mark post (13) logical on fixed lid (3)
Moved up in hole, after plug (10) is separated with the sealing ring (9) on the inside of supporting block (8), gas will pass through plug (10) with
It flows out, and is discharged by the air vent (4) on explosion-protection equipment (2) side wall, and then to equipment inside at gap between supporting block (8)
Pressure release processing is carried out, the air pressure inside equipment is reduced；After stove pipe road (1) internal air pressure reduces, compressed spring (12)
Plug (10) is pushed to supporting block (8), and then plug (10) is made to hold out against the sealing ring (9) on the inside of supporting block (8), just to support
The opening of block (8) is sealed, and the branch fastener (16) in spacing head (11) makes the lower end surface and spacing head (11) of supporting block (8)
Between there are gap, facilitate the outflow of gas, user judges the reset feelings of plug (10) by the graduation mark on mark post (13)
Condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447550.0A CN110230716B (en) | 2019-05-27 | 2019-05-27 | Furnace smoke doping explosion-proof device of direct-blowing type steel ball coal mill and working method of device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447550.0A CN110230716B (en) | 2019-05-27 | 2019-05-27 | Furnace smoke doping explosion-proof device of direct-blowing type steel ball coal mill and working method of device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110230716A true CN110230716A (en) | 2019-09-13 |
| CN110230716B CN110230716B (en) | 2024-02-09 |
Family
ID=67858539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910447550.0A Active CN110230716B (en) | 2019-05-27 | 2019-05-27 | Furnace smoke doping explosion-proof device of direct-blowing type steel ball coal mill and working method of device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110230716B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503429A (en) * | 2020-04-07 | 2020-08-07 | 天津太合节能科技有限公司 | Pipe plug and system of direct-buried heat-insulation pipeline and sealing method of end face of direct-buried heat-insulation pipeline |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202646812U (en) * | 2012-07-04 | 2013-01-02 | 福建东源环保有限公司 | Pressure relief safety valve for dust remover casing |
| CN202955295U (en) * | 2012-11-19 | 2013-05-29 | 扬州正宇锅炉有限公司 | Explosion-proof device |
| CN103343828A (en) * | 2013-07-15 | 2013-10-09 | 抚顺煤矿电机制造有限责任公司 | Mining explosive-proof electromotor anti-explosion reducing valve |
| CN203322408U (en) * | 2013-04-26 | 2013-12-04 | 苏州协昌环保科技股份有限公司 | Depressurization explosion-proof valve |
| CN104390479A (en) * | 2014-10-20 | 2015-03-04 | 何本科 | Explosion protection device of smelting furnace |
| KR20160090157A (en) * | 2015-01-21 | 2016-07-29 | 주식회사 상민이엔지 | Two-stage safety valve for portable gas container |
| CN206874906U (en) * | 2017-05-19 | 2018-01-12 | 大连理工安全装备有限公司 | Magnetic explosionproof doors device |
| CN107588215A (en) * | 2017-10-12 | 2018-01-16 | 苏州宏恒化工有限公司 | A kind of pressure-regulating valve applied to reactor |
| CN210531698U (en) * | 2019-05-27 | 2020-05-15 | 华电电力科学研究院有限公司 | Furnace fume mixing explosion-proof device of direct-blowing steel ball coal mill |
-
2019
- 2019-05-27 CN CN201910447550.0A patent/CN110230716B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202646812U (en) * | 2012-07-04 | 2013-01-02 | 福建东源环保有限公司 | Pressure relief safety valve for dust remover casing |
| CN202955295U (en) * | 2012-11-19 | 2013-05-29 | 扬州正宇锅炉有限公司 | Explosion-proof device |
| CN203322408U (en) * | 2013-04-26 | 2013-12-04 | 苏州协昌环保科技股份有限公司 | Depressurization explosion-proof valve |
| CN103343828A (en) * | 2013-07-15 | 2013-10-09 | 抚顺煤矿电机制造有限责任公司 | Mining explosive-proof electromotor anti-explosion reducing valve |
| CN104390479A (en) * | 2014-10-20 | 2015-03-04 | 何本科 | Explosion protection device of smelting furnace |
| KR20160090157A (en) * | 2015-01-21 | 2016-07-29 | 주식회사 상민이엔지 | Two-stage safety valve for portable gas container |
| CN206874906U (en) * | 2017-05-19 | 2018-01-12 | 大连理工安全装备有限公司 | Magnetic explosionproof doors device |
| CN107588215A (en) * | 2017-10-12 | 2018-01-16 | 苏州宏恒化工有限公司 | A kind of pressure-regulating valve applied to reactor |
| CN210531698U (en) * | 2019-05-27 | 2020-05-15 | 华电电力科学研究院有限公司 | Furnace fume mixing explosion-proof device of direct-blowing steel ball coal mill |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503429A (en) * | 2020-04-07 | 2020-08-07 | 天津太合节能科技有限公司 | Pipe plug and system of direct-buried heat-insulation pipeline and sealing method of end face of direct-buried heat-insulation pipeline |
| CN111503429B (en) * | 2020-04-07 | 2024-04-12 | 天津太合节能科技有限公司 | Pipe plug and system of direct-buried heat-insulating pipeline and end face sealing method of direct-buried heat-insulating pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110230716B (en) | 2024-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204387696U (en) | Pipeline gas leak detecting device | |
| CN204718761U (en) | Flow type pipe flange gas leak detection apparatus | |
| CN110230716A (en) | A kind of direct-firing low speed coal mill mixes furnace cigarette explosion-protection equipment and its working method | |
| CN107962161A (en) | A kind of smoke gas collecting apparatus and its die casting machine system | |
| CN210905327U (en) | Explosion-proof dust remover | |
| CN202327268U (en) | Explosion-proof relief valve | |
| CN111022719A (en) | Pressure self-balancing system of coal-fired boiler | |
| CN204449850U (en) | Urgent and the combination assembly machine of air-leakage test of gas nozzle automation | |
| CN203702224U (en) | Explosion-proof well lid device | |
| CN202562273U (en) | Fireproof door detecting furnace | |
| CN205745347U (en) | A kind of Novel furnace top bleeding valve device | |
| CN202788938U (en) | Inflatable temporary alternative apparatus for mine explosion-proof door | |
| CN210531698U (en) | Furnace fume mixing explosion-proof device of direct-blowing steel ball coal mill | |
| CN211787425U (en) | Smoke detection device for thermal power plant | |
| CN208704460U (en) | The blower device of smelting furnace | |
| CN211112068U (en) | Voltage-sharing diffusing device for blast furnace with bell-type furnace top for vanadium titano-magnetite | |
| CN2883372Y (en) | Sucktion smoke guiding, scattering-free coal loading closing device of ramming coke oven | |
| CN204255579U (en) | A kind of dust leakage detection apparatus of many casings fly-ash separator | |
| CN203484004U (en) | Explosion-proof dust remover | |
| CN204321986U (en) | Impeller spindle provision for disengagement | |
| CN210831914U (en) | Explosion-proof door of waste heat boiler and waste heat boiler | |
| CN208865775U (en) | A kind of safety system of high-efficiency pulverized coal preparation process | |
| CN201884736U (en) | Gas pressure relief device | |
| CN207324327U (en) | One kind dismounts convenient multi-sleeve dust separator | |
| CN206786094U (en) | A kind of side valve cap valve |
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 |