CN107401645A - Sealing device - Google Patents
Sealing device Download PDFInfo
- Publication number
- CN107401645A CN107401645A CN201710230112.XA CN201710230112A CN107401645A CN 107401645 A CN107401645 A CN 107401645A CN 201710230112 A CN201710230112 A CN 201710230112A CN 107401645 A CN107401645 A CN 107401645A
- Authority
- CN
- China
- Prior art keywords
- hole
- cavity
- seal
- sealing device
- axial direction
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 92
- 210000002445 nipple Anatomy 0.000 claims abstract description 24
- 239000007921 spray Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 230000007547 defect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract 3
- 238000005070 sampling Methods 0.000 description 21
- 239000003245 coal Substances 0.000 description 19
- 239000002817 coal dust Substances 0.000 description 13
- 238000001514 detection method Methods 0.000 description 6
- 208000002925 dental caries Diseases 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005514 two-phase flow Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000005619 thermoelectricity 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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/0081—Pipe joints comprising a liquid or fusible seal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1006—Dispersed solids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of sealing device, it includes seal nipple, seal sleeve, sealing inner sleeve, enclosing cover, and they are coaxially disposed on the axle of seal sleeve and in axial direction airtight connection successively；Seal nipple includes axially penetrating through the first through hole of seal nipple；Seal sleeve includes the second through hole for axially penetrating through seal sleeve；Sealing inner sleeve includes the third through-hole for axially penetrating through sealing inner sleeve；First through hole, the second through hole and third through-hole are sequentially communicated and are coaxially disposed on the axle, and first through hole is identical with the internal diameter of third through-hole；The inwall of first through hole and third through-hole is respectively arranged with the multiple trench cells continuously or being discontinuously in axial direction arranged separately on the inwall of first through hole and third through-hole.Sealing device disclosed by the invention has the characteristics of convenient and swift, applied widely, realizes high-seal, zero technique effect to leak, the defects of having prevented mechanical seal mode troublesome in poeration, sealing device cracky.
Description
Technical field
The present invention relates to thermoelectricity technology relevant device field, more particularly to a kind of sealing device.
Background technology
At present, during thermal power plant is to the periodic detection of pulverized-coal fired boiler, when coal dust sampling gun is stretched into, extracted,
The situation of coal dust splash easily occurs, high-temperature pulverized coal particle can not only pollute surrounding environment, influence the safety in thermal power plant
Production, is also easy to that the health of staff is caused greatly to damage.Meanwhile existing sealing device can not still accomplish height
Degree sealing takes into account with easy to operate.
Therefore, need one kind badly and both can guarantee that high-seal effect, and can makes staff easier when operation
Can be applied to sampling detection of pulverized coal sealing device.
The content of the invention
The technical problem to be solved in the present invention is can not to take into account high-seal and easy to operate in the prior art to overcome
A kind of the defects of two kinds of advantages, there is provided sealing device.
The present invention is that solve above-mentioned technical problem by following technical proposals：
A kind of sealing device, it includes a seal nipple；One seal sleeve；One sealing inner sleeve；One enclosing cover；It is described close
Sealing joint, the seal sleeve, the sealing inner sleeve and enclosing cover is coaxially disposed on the axle of the seal sleeve and edge
The axial direction of axle airtight connection successively；The seal nipple includes a first through hole, and the first through hole is along the axial direction
The seal nipple is run through in direction；The seal sleeve includes one second through hole, and second through hole passes through along the axial direction
Wear the seal sleeve；The sealing inner sleeve includes a third through-hole, and the third through-hole runs through institute along the axial direction
State sealing inner sleeve；The first through hole, second through hole and the third through-hole are sequentially communicated and coaxial on the axle
Set, the first through hole is identical with the internal diameter of the third through-hole；The inwall of the first through hole and the third through-hole point
Multiple trench cells are not provided with, and the multiple trench cell continuously or discontinuously arranges respectively along the axial direction
On the inwall of the first through hole and on the inwall of the third through-hole.
It is preferred that second through hole includes one first cavity, one second cavity and one the 3rd cavity；First chamber
Body, second cavity and the 3rd cavity are sequentially communicated along the axial direction；First cavity is logical with described first
Hole connects, and the 3rd cavity connects with the third through-hole.
It is preferred that the internal diameter of first cavity is identical with the internal diameter of the 3rd cavity, and first cavity is interior
The internal diameter of footpath and the 3rd cavity is respectively greater than the internal diameter of second cavity.
It is preferred that the internal diameter of second cavity respectively with the internal diameter of the first through hole and the internal diameter of the third through-hole
It is identical.
It is preferred that the seal nipple also includes a base and a connector, the connector is from the end face of the base
Extend along the axial direction and protrude, and the connector is threadedly coupled with first cavity.
It is preferred that the seal sleeve also includes multiple compressed air interfaces, the multiple compressed air interface is arranged in
On the outer wall of the seal sleeve, and the multiple compressed air interface connects with second cavity.
It is preferred that the enclosing cover includes a base and a ring wall, the ring wall is anti-from the base along the axial direction
To extension, and the ring wall part is stretched into the 3rd cavity.
It is preferred that one end of the sealing inner sleeve is threadedly coupled with the enclosing cover, the other end of the sealing inner sleeve
It is threadedly coupled with second cavity.
It is preferred that the base is provided with a peep-hole, the peep-hole is located on the axle.
It is preferred that all or part of trench cell is formed in the circumferential direction vertical with the axial direction
The structure of circular arc or full-circle spray pattern.
The positive effect of the present invention is：
The sealing device of the present invention is the device that four component combinations form, being capable of taking according to different coal fines sampling apparatus
Sample requires, to set the part of different size, there is the characteristics of convenient and swift, applied widely.And the structure for passing through inner flow passage
Design, the combination that will there is the cavity of a variety of internal diameters for inserting the inner flow passage of coal fines sampling apparatus to be designed to, prevent and control
Sealing device flow field processed is to obtain good sealing effectiveness, it is achieved thereby that high-seal, zero technique effect to leak, moreover it is possible to
Enough fully ensure that the compressed gas for sealing will not be injected in pulverized coal channel, influence the precision of coal dust sampling, while prevent again
The defects of mechanical seal mode is troublesome in poeration, sealing device cracky.
Brief description of the drawings
Fig. 1 is the side structure schematic view of the sealing device of one embodiment of the invention.
Fig. 2 is Fig. 1 A-A diagrammatic cross-sections.
Fig. 3 is the positive structure diagram of the sealing device of one embodiment of the invention.
1- seal nipples, 11- first through hole, 12- bases, 13- connectors；
2- seal sleeves, the through holes of 21- second, the cavitys of 211- first, the cavitys of 212- second, the cavitys of 213- the 3rd, 22- compressions
Air interface；
3- seals inner sleeve, 31- third through-holes；
4- enclosing covers, 41- bases, 411- peep-holes, 42- ring walls；
5- trench cells.
Embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " top ", " bottom " " interior ", " outer " or position relationship are based on orientation shown in the drawings or position
Relation, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must have
There is specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
As shown in figure 1, a kind of sealing device provided by the invention, it includes a seal nipple 1, a seal sleeve 2, one
Seal inner sleeve 3, an enclosing cover 4.Wherein, the seal nipple 1, the seal sleeve 2, the sealing inner sleeve 3 and the enclosing cover 4 are on this
The axle of seal sleeve 2 is coaxially disposed and along the axial direction airtight connection successively of the axle.Sealing device provided by the invention is one
The sealing device that kind is formed by four component combinations, seal nipple 1 connect pulverized coal channel, and seal sleeve 2 is used to store compression sky
Gas forms blanket gas wall, the entrance that sealing inner sleeve 3 inserts as coal fines sampling apparatus, and enclosing cover 4 is used to sample in no coal dust
Device insert when sealing device is sealed, such combining structure compared to the structure integrally formed for, can replace at any time
The seal nipple 1 of various outer diameter specification, seal sleeve 2, sealing inner sleeve 3 to adapt to the sampling requirement of the caliber of all size,
With the characteristics of flexible, applied widely.
Specifically, as shown in Figures 2 and 3, in sealing device of the invention, seal nipple 1 includes a first through hole 11, should
First through hole 11 in axial direction runs through seal nipple 1；Seal sleeve 2 includes one second through hole 21, and second through hole 21 is along axle
Run through seal sleeve 2 to direction；Sealing inner sleeve 3 includes a third through-hole 31, and the third through-hole 31 is in axial direction through close
Seal inner sleeve 3；First through hole 11, the second through hole 21 and third through-hole 31 are sequentially communicated and are coaxially disposed on axle, and first is logical
Hole 11 is identical with the internal diameter of third through-hole 31.First through hole 11, the second through hole 21 and third through-hole 31 are collectively forming an inside
Runner, to allow coal dust sampling equipment to sequentially pass through third through-hole 31, the second through hole 21 and first through hole 11 and insert pulverized coal channel
It is sampled, therefore the size of first through hole 11, the second through hole 21 and third through-hole 31 should also be as being set according to the coal dust sampling of reality
Standby size matched design, a sealing structure is formed, the coal dust spluttering during sampling is prevented and causes work accident
Occur.
In the sealing device of the present invention, first through hole 11 and the third through-hole 31 of sealing inner sleeve 3 of seal nipple 1
Multiple trench cells 5 are respectively arranged with inwall, the plurality of trench cell 5 continuously or is discontinuously in axial direction distinguished
It is arranged on the inwall of first through hole 11 and on the inwall of third through-hole 31.In order to further improve the sealing device of the present invention
Sealing property, seal nipple 1 first through hole 11 and sealing inner sleeve 3 third through-hole 31 inwall on be additionally arranged sealing knot
Structure, by way of continuously or discontinuously in axial direction the arranging of multiple trench cells 5, utilize inner flow passage internal diameter
Change, formed it is multiple be used to store the sealing spaces of seal gas, so as to strengthen sealing effectiveness, prevent seal gas from spraying,
And prevent seal gas is mixed into along inner passage in the passage of coal fines sampling apparatus from influenceing sampling precision and result.Of the invention real
In the sealing device for applying example, multiple continuous arrangements of trench cell 5, multiple sealing spaces of formation can effectively realize efficiently close
Envelope and zero technique effect to leak.
As a more preferred embodiment of the present embodiment, in sealing device of the invention, the of seal sleeve 2
Two through holes 21 are also designed to the structure that there is internal diameter to change.That is, the second through hole 21 includes one first cavity 211, one second
The cavity 213 of cavity 212 and 1 the 3rd；First cavity 211, the cavity 213 of the second cavity 212 and the 3rd in axial direction according to
Secondary connection；First cavity 211 connects with first through hole 11, and the 3rd cavity 213 connects with third through-hole 31.It is designed to internal diameter
The structure of the second through hole 21 of change is to further enhance the sealing effectiveness of the sealing device.Wherein, the work of the first cavity 211
Be before seal nipple 1 formed cross section of fluid channel be mutated so that the two phase flow containing coal dust in this deceleration, deposition, taken in coal dust
The incipient stage of sample detection plays excessive effect, and when sampling detection of pulverized coal is normally carried out, play strengthen sealing effectiveness and
Seal the effect of stable type.The effect of second cavity 212 is passed through for coal fines sampling apparatus.The effect of 3rd cavity 213 is shape
It is mutated into cross section of fluid channel, plays a part of redundancy under special operation condition and set to protect coal dust to leak, and in sampling detection of pulverized coal
When being normally carried out, equally play a part of strengthening sealing effectiveness and seal stable type.
As a more preferred embodiment of the present embodiment, in the sealing device of the present invention, the first cavity 211
Internal diameter it is identical with the internal diameter of the 3rd cavity 213, and the internal diameter of the first cavity 211 and the internal diameter of the 3rd cavity 213 are respectively greater than
The internal diameter of second cavity 212.Wherein, the internal diameter of the second cavity 212 can match the size of coal fines sampling apparatus, can also be bigger
In the size of coal fines sampling apparatus.And by the first cavity 211 and larger the formed redundant space of internal diameter of the 3rd cavity 213
The effect for the two phase flow containing coal dust that slows down can be functioned well as, and the first cavity 211 and the internal diameter identical of the 3rd cavity 213 are set
The pressure of the both sides of the second cavity 212 can be balanced well by putting, avoid inside the second through hole 21 because pressure differential and caused by seal
The unnecessary flowing of air, plays better seal effect.
As a more preferred embodiment of the present embodiment, in the sealing device of the present invention, the second cavity 212
Internal diameter it is identical with the internal diameter of first through hole 11 and the internal diameter of third through-hole 31 respectively, further to prevent the He of the first cavity 211
The flowing of seal gas in 3rd cavity 213, further enhances sealing effectiveness.
As a more preferred embodiment of the present embodiment, in the sealing device of the present invention, seal nipple 1 is also
Including a base 12 and a connector 13, the connector 13 in axial direction extends protrusion, and connector from the end face of base 12
13 are threadedly coupled with the first cavity 211.Now, seal nipple 1 forms a boss structure, is worked in coordination with the first cavity 211,
Prevent the seal gas in the first cavity 211 from leaking, improve sealing effectiveness.
As a more preferred embodiment of the present embodiment, in the sealing device of the present invention, seal sleeve 2 is also
Including multiple compressed air interfaces 22, the plurality of compressed air interface 22 is arranged on the outer wall of seal sleeve 2, in the present embodiment
In, circumferential direction arrangement of these compressed air interfaces 22 along seal sleeve 2, and the cavity of multiple compressed air interfaces 22 and second
212 connections, compressed air is provided out of outside the second through hole 21 to seal sleeve 2, is further enhanced in the second through hole 21
The sealing effectiveness of seal gas.
As a more preferred embodiment of the present embodiment, in the sealing device of the present invention, enclosing cover 4 includes one
The ring wall 42 of base 41 and one, ring wall 42 is in axial direction oppositely extending from base 41, and the 3rd cavity 213 is stretched into the part of ring wall 42
It is interior, it can farthest prevent that the seal gas in the 3rd cavity 213 from leaking or coal dust spluttering, further enhance sealing effect
Fruit.
As a more preferred embodiment of the present embodiment, in the sealing device of the present invention, inner sleeve 3 is sealed
One end be threadedly coupled with enclosing cover 4, sealing inner sleeve 3 the other end be threadedly coupled with the second cavity 212.Now, enclosing cover 4, close
Envelope inner sleeve 3, the 3rd cavity 213 are worked in coordination, and prevent the seal gas in the 3rd cavity 213 from leaking, and improve sealing effectiveness.
As a more preferred embodiment of the present embodiment, in the sealing device of the present invention, set on base 41
There is a peep-hole 411, the peep-hole 411 is located on axle.The peep-hole 411 can check close before sampling detection of pulverized coal is carried out
The pressure size for the compressed air that the sealing effectiveness of seal apparatus and guidance convey in adjusting toward sealing device, is efficiently controlled close
The sealing property of seal apparatus.
As a more preferred embodiment of the present embodiment, in the sealing device of the present invention, whole or portion
The trench cell 5 divided forms circular arc or the structure of full-circle spray pattern in the circumferential direction vertical with axial direction.It is designed to this
The structure of sample is advantageous in that, sealing device can be designed to justify according to actual condition to select to be suitable for particular job condition
Arc or the trench cell of circular structure 5.
The sealing device of the present invention is the device that four component combinations form, being capable of taking according to different coal fines sampling apparatus
Sample requires, to set the part of different size, there is the characteristics of convenient and swift, applied widely.And the structure for passing through inner flow passage
Design, the combination that will there is the cavity of a variety of internal diameters for inserting the inner flow passage of coal fines sampling apparatus to be designed to, prevent and control
Sealing device flow field processed is to obtain good sealing effectiveness, it is achieved thereby that high-seal, zero technique effect to leak, moreover it is possible to
Enough fully ensure that the compressed gas for sealing will not be injected in pulverized coal channel, influence the precision of coal dust sampling, while prevent again
The defects of mechanical seal mode is troublesome in poeration, sealing device cracky.
Although the embodiment of the present invention is the foregoing described, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
On the premise of the principle and essence of the present invention, various changes or modifications can be made to these embodiments, but these changes and
Modification each falls within protection scope of the present invention.
Claims (10)
1. a kind of sealing device, it is characterised in that it includes：
One seal nipple；
One seal sleeve；
One sealing inner sleeve；
One enclosing cover；
The seal nipple, the seal sleeve, the sealing inner sleeve and the enclosing cover are same on the axle of the seal sleeve
Axle sets and along the axial direction airtight connection successively of the axle；
The seal nipple includes a first through hole, and the first through hole runs through the seal nipple along the axial direction；
The seal sleeve includes one second through hole, and second through hole runs through the seal sleeve along the axial direction；
The sealing inner sleeve includes a third through-hole, and the third through-hole runs through the sealing inner sleeve along the axial direction
Cylinder；
The first through hole, second through hole and the third through-hole are sequentially communicated and are coaxially disposed on the axle, described
First through hole is identical with the internal diameter of the third through-hole；
The inwall of the first through hole and the third through-hole is respectively arranged with multiple trench cells, and the multiple trench cell connects
Continuous ground is discontinuously arranged separately on the inwall of the first through hole along the axial direction and the third through-hole
On inwall.
2. sealing device as claimed in claim 1, it is characterised in that second through hole includes one first cavity, one second
Cavity and one the 3rd cavity；
First cavity, second cavity and the 3rd cavity are sequentially communicated along the axial direction；
First cavity connects with the first through hole, and the 3rd cavity connects with the third through-hole.
3. sealing device as claimed in claim 2, it is characterised in that the internal diameter of first cavity and the 3rd cavity
Internal diameter is identical, and the internal diameter of the internal diameter of first cavity and the 3rd cavity is respectively greater than the internal diameter of second cavity.
4. sealing device as claimed in claim 3, it is characterised in that the internal diameter of second cavity is logical with described first respectively
The internal diameter of the internal diameter in hole and the third through-hole is identical.
5. sealing device as claimed in claim 2, it is characterised in that the seal nipple also includes a base and a connection
Head, the connector extends from the end face of the base along the axial direction to be protruded, and the connector and first chamber
Body is threadedly coupled.
6. sealing device as claimed in claim 2, it is characterised in that the seal sleeve also connects including multiple compressed airs
Mouthful, the multiple compressed air interface is arranged on the outer wall of the seal sleeve, and the multiple compressed air interface and institute
State the connection of the second cavity.
7. sealing device as claimed in claim 2, it is characterised in that the enclosing cover includes a base and a ring wall, the ring
Wall is oppositely extending from the base along the axial direction, and the ring wall part is stretched into the 3rd cavity.
8. sealing device as claimed in claim 7, it is characterised in that one end of the sealing inner sleeve and the enclosing cover screw thread
Connection, the other end of the sealing inner sleeve are threadedly coupled with second cavity.
9. sealing device as claimed in claim 7, it is characterised in that the base is provided with a peep-hole, the peep-hole
On the axle.
10. sealing device as claimed in claim 1, it is characterised in that all or part of trench cell with institute
State and circular arc or the structure of full-circle spray pattern are formed in the vertical circumferential direction of axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710230112.XA CN107401645A (en) | 2017-04-10 | 2017-04-10 | Sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710230112.XA CN107401645A (en) | 2017-04-10 | 2017-04-10 | Sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107401645A true CN107401645A (en) | 2017-11-28 |
Family
ID=60404680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710230112.XA Pending CN107401645A (en) | 2017-04-10 | 2017-04-10 | Sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107401645A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1109091A (en) * | 1963-07-26 | 1968-04-10 | Int Combustion Holdings Ltd | Improvements in or relating to access opening assemblies |
| CN2235048Y (en) * | 1995-08-24 | 1996-09-11 | 潘健 | Liquid and gas isolation sealing device |
| CN2373569Y (en) * | 1999-07-13 | 2000-04-12 | 潘建 | Multi-chamber air seal device of steam turbine generator unit |
| CN1384273A (en) * | 2001-05-03 | 2002-12-11 | 关明 | Sealing method and device for bearing box of steam turbine |
| CN202948021U (en) * | 2012-11-28 | 2013-05-22 | 河北省电力公司电力科学研究院 | Guide seal sleeve |
| CN203547636U (en) * | 2013-11-06 | 2014-04-16 | 郑州光力科技股份有限公司 | Drill rod sealing device, mining dust catching device and mining drilling device |
| CN204556318U (en) * | 2015-04-29 | 2015-08-12 | 国家电网公司 | A kind of use compressed-air actuated coal dust sampling sealing socket |
| CN204718842U (en) * | 2015-06-10 | 2015-10-21 | 南京中能瑞华电气有限公司 | The dustless sampler of a kind of direct-blowing type coal mill tube cell |
| CN205067134U (en) * | 2015-08-05 | 2016-03-02 | 大唐南京发电厂 | Buggy pipe sample sealing joint |
| CN206861106U (en) * | 2017-04-10 | 2018-01-09 | 上海电力建设启动调整试验所 | Sealing device |
-
2017
- 2017-04-10 CN CN201710230112.XA patent/CN107401645A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1109091A (en) * | 1963-07-26 | 1968-04-10 | Int Combustion Holdings Ltd | Improvements in or relating to access opening assemblies |
| CN2235048Y (en) * | 1995-08-24 | 1996-09-11 | 潘健 | Liquid and gas isolation sealing device |
| CN2373569Y (en) * | 1999-07-13 | 2000-04-12 | 潘建 | Multi-chamber air seal device of steam turbine generator unit |
| CN1384273A (en) * | 2001-05-03 | 2002-12-11 | 关明 | Sealing method and device for bearing box of steam turbine |
| CN202948021U (en) * | 2012-11-28 | 2013-05-22 | 河北省电力公司电力科学研究院 | Guide seal sleeve |
| CN203547636U (en) * | 2013-11-06 | 2014-04-16 | 郑州光力科技股份有限公司 | Drill rod sealing device, mining dust catching device and mining drilling device |
| CN204556318U (en) * | 2015-04-29 | 2015-08-12 | 国家电网公司 | A kind of use compressed-air actuated coal dust sampling sealing socket |
| CN204718842U (en) * | 2015-06-10 | 2015-10-21 | 南京中能瑞华电气有限公司 | The dustless sampler of a kind of direct-blowing type coal mill tube cell |
| CN205067134U (en) * | 2015-08-05 | 2016-03-02 | 大唐南京发电厂 | Buggy pipe sample sealing joint |
| CN206861106U (en) * | 2017-04-10 | 2018-01-09 | 上海电力建设启动调整试验所 | Sealing device |
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Address after: 200031 No. 68, Gaoyou Road, Shanghai, Xuhui District Applicant after: Shanghai electric power construction start adjustment test Institute Co.,Ltd. Address before: 200031 No. 68, Gaoyou Road, Shanghai, Xuhui District Applicant before: SHANGHAI ELECTRIC POWER CONSTRUCTION STARTING AND ADJUSTMENT TESTING LABORATORY |
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Application publication date: 20171128 |