CN207213172U - Double-air-cavity micro-positive-pressure nitrogen sealing device - Google Patents
Double-air-cavity micro-positive-pressure nitrogen sealing device Download PDFInfo
- Publication number
- CN207213172U CN207213172U CN201721117420.3U CN201721117420U CN207213172U CN 207213172 U CN207213172 U CN 207213172U CN 201721117420 U CN201721117420 U CN 201721117420U CN 207213172 U CN207213172 U CN 207213172U
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- China
- Prior art keywords
- nitrogen
- ring
- main shaft
- air cavity
- gas
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- 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.)
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 157
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 68
- 238000007789 sealing Methods 0.000 title abstract description 22
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003034 coal gas Substances 0.000 abstract description 14
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000009304 pastoral farming Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses a two air cavity pressure-fired nitrogen gas sealing device advances to manage at nitrogen gas and installs nitrogen gas control valve, and nitrogen gas advances the end of managing and divides two tunnel to link to each other with the connecting pipe, connecting pipe intercommunication nitrogen gas chamber. A main shaft sealing ring is arranged in a main shaft sealing groove processed on the inner wall of the sealing static ring, and a nitrogen gas cavity is processed on the inner wall of the sealing static ring between two adjacent main shaft sealing grooves to form double gas cavities which are communicated with each other. The top end of the sealed stationary ring is provided with connecting pipe jacks with the same number as the nitrogen gas cavities, the number of the bolt holes which are larger than 1 are processed on the equal ring line of the outer edge of the sealed stationary ring, and a circular sealing ring is arranged in a circular sealing groove which is processed on the combined plane of the sealed stationary ring. The double nitrogen cavities formed by processing form a nitrogen sealing ring combining the axial direction and the radial direction, so that zero leakage of coal gas is realized; the nitrogen pressure is adjusted by the nitrogen adjusting valve on the nitrogen inlet pipe, so that the sealing device can play the best sealing role, and the waste of nitrogen and the influence of excessive nitrogen flowing into the coal gas on the heat value of the coal gas are reduced.
Description
Technical field
A kind of gas-tight sealing is the utility model is related to, more particularly to one kind is matched in gas centrifugal in coking of coal system
Double air cavity pressure-fired nitrogen gas seal equipments on pressuring machine.
Background technology
Before the utility model, the sealing of gas centrifugal pressuring machine is using carbon ring seal device, this sealing device
It is made up of graphite grazing piece and stationary seal ring, wherein the stationary seal ring is circumference monolithic construction, stationary seal ring during work
Fixed installed in unit in ring seat, when graphite grazing pad wear, coal gas can scurry out along the axial direction of gas centrifugal pressuring machine main shaft
Leakage, so as to cause the accident of Pressure Unit gas leak.If graphite grazing piece is changed in maintenance, it is necessary to tears inlet and outlet pipeline open
Under, then complete machine is disintegrated, and take out impeller after rotor handling is gone out to tear graphite grazing piece open, maintenance duration length, difficulty is big,
Greatly influence equipment operation and operating rate.
The content of the invention
The purpose of this utility model is that providing one kind realizes coal gas zero leakage, reduces nitrogen consumption and reduce nitrogen to coal
The influence of gas calorific value and equipment installation, the convenient double air cavity pressure-fired nitrogen gas seal equipments of maintenance.
To achieve the above object, the technical solution adopted in the utility model is：Described double air cavity pressure-fired nitrogen-sealeds
Device includes stationary seal ring, connecting tube, main shaft seal circle, nitrogen adjustment valve, nitrogen inlet, circular seal ring.Nitrogen adjustment valve
On nitrogen inlet, the end of nitrogen inlet divides two-way to be connected with connecting tube, connecting tube connection nitrogen air cavity.It is quiet sealing
On the inwall of ring it is equidistant or be non-equally machined with quantity be 3 main shaft seal groove, in each main shaft seal groove equipped with master
Simmer ring, the nitrogen air cavity that quantity is 2 is machined with the inwall between adjacent two main shaft seals groove in stationary seal ring, is formed
Described dinitrogen gas air cavity, threeway and elbow of each nitrogen air cavity through connecting tube and nitrogen inlet end communicate with each other.Close
The top of envelope stationary ring is machined with the equal connecting tube jack of same nitrogen air cavity quantity, adds in stationary seal ring outer peripheral wait on loop wire
Work has the bolt hole that quantity is more than 1, in being machined with circular seal groove in the combination plane of stationary seal ring, is filled in circular seal groove
There is circular seal ring.
Using as above technical scheme provide double air cavity pressure-fired nitrogen gas seal equipments compared with prior art, technique effect
It is：
1. being machined with two nitrogen air cavitys, referred to as dinitrogen gas air cavity on the internal chamber wall of stationary seal ring, axial direction and footpath are formed
To the nitrogen-sealed compression ring being combined, coal gas zero leakage is realized；
2. being provided with nitrogen adjustment valve on the nitrogen inlet being connected with dinitrogen gas air cavity, adjusted by nitrogen adjustment valve
Nitrogen pressure, described sealing device is played best sealing function, while can also reduce the waste of nitrogen and excessive nitrogen
Scurry into the influence to calorific value of gas in coal gas；
3. the sealing device is used to semi-open type, it is easily installed and overhauls.
Brief description of the drawings
Fig. 1 is the positive schematic diagram for being sealed stationary ring.
Fig. 2 is Fig. 1 schematic top plan view.
Fig. 3 is the line C-C schematic cross-sectional view along Fig. 1.
Fig. 4 is the line A-A schematic cross-sectional view along Fig. 1.
Relation schematic diagrams of the Fig. 5 between stationary seal ring and gas centrifugal pressuring machine main shaft equipped with main shaft seal circle.
Fig. 6 is double air cavity pressure-fired nitrogen gas seal equipment scheme of installations.
Embodiment
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
（As shown in Figure 6）Double air cavity pressure-fired nitrogen gas seal equipments described in the utility model include stationary seal ring 1, connection
Pipe 2, main shaft seal circle 4, nitrogen adjustment valve 5, nitrogen inlet 6, wherein connecting tube 2 can use flexible pipe, and stationary seal ring 1 is using half-and-half
Open type, convenient installation and maintenance.Its end after nitrogen adjustment valve 5 of nitrogen inlet 6 divides two-way to be connected respectively with connecting tube 2,
Connecting tube 2 connects nitrogen air cavity 3.（Such as Fig. 2,3）It is equidistant or non-equally on the internal chamber wall of stationary seal ring 1（Most preferably etc.
Distance）The main shaft seal groove 4a that quantity is 3 is machined with, main shaft seal circle 4 is housed in each main shaft seal groove 4a（As Fig. 5,
6）.The nitrogen air cavity 3 that quantity is 2 is machined between adjacent two main shaft seals groove 4a, forms described dinitrogen gas air cavity.It is each
Threeway and elbow of the nitrogen air cavity 3 through connecting tube 2 and the end of nitrogen inlet 6 communicate with each other.（Such as Fig. 2,4）In stationary seal ring 1
Top（Vertically）It is machined with the same quantity of nitrogen air cavity 3 equal connecting tube jack 2a, connecting tube jack 2a connection nitrogen air cavity
3, a three-way pipe and elbow connected on nitrogen inlet 6 of the connecting tube 2 being inserted into connecting tube jack 2a, other end connection
Nitrogen air cavity 3.（By Fig. 1,3,5）Stationary seal ring 1 it is outer peripheral wait loop wire on be machined with quantity be more than 1 bolt hole 1a, six
Corner bolt is connected stationary seal ring 1 with the fixation ring seat of gas centrifugal pressuring machine through bolt hole 1a, is in contact with fixed ring seat
Stationary seal ring 1 combination plane on be machined with circular seal groove 8a, circular seal ring 8 is housed in circular seal groove 8a.Institute
State the sealing ring that circular seal ring 8 and main shaft seal circle 4 are made using graphite grazing piece or wool felt, their good seal performances,
It is easily changed.
During implementation,（According to shown in Fig. 6）Stationary seal ring 1 is installed on the main shaft 7 of gas centrifugal pressuring machine, stationary seal ring
1 has circular seal ring 8 to seal with the fixation ring seat combination interplanar of gas centrifugal pressuring machine, while stationary seal ring 1 is again
Alignment pin 9 through both sides is connected with gas centrifugal pressuring machine, ensures that position is motionless, ensures during installation main shaft seal circle 4 with main shaft 7
Between good seal.During new installation, the sealing condition of each sealing ring is all preferable, now through nitrogen adjustment valve（Also nitrogen can be claimed
Controlled atmosphere pressure valve）5, when adjusting the pressure of nitrogen inlet 6, only it need to ensure that nitrogen pressure is higher than gas pressure, two nitrogen gas slightly
Chamber 3 forms twice radial direction nitrogen compression ring, can play cut-out coal gas effect, accomplish coal gas zero leakage；But with the increasing of run time
Long, after especially main shaft seal circle 4 slowly wears, coal gas can be scurried into nitrogen, now need by nitrogen inlet 6
Nitrogen adjustment valve 5 adjust the nitrogen pressure in nitrogen inlet 6, between the two nitrogen air cavitys 3 connected each other form pressure-fired
The radial and axial nitrogen compression ring being combined together, now coal gas can not penetrate double air cavity nitrogen compression rings, it is ensured that coal gas zero
Leakage.With the continuous abrasion of main shaft seal circle 4, nitrogen adjustment valve 5 is constantly adjusted, when in nitrogen adjustment valve can not be passed through
When 5 adjustment reaches coal gas zero leakage, maintenance down even more change owner Simmer ring 4 or circular seal ring 8.
Carefulness operation, the nitrogen pressure entered by the regulation of nitrogen adjustment valve 5 in nitrogen air cavity 3, in dinitrogen gas air cavity 3
Form compression ring, it can be ensured that coal gas zero leakage, you can reach purpose described in the utility model.
Claims (1)
1. pair air cavity pressure-fired nitrogen gas seal equipment, including stationary seal ring（1）, connecting tube（2）, main shaft seal circle（4）, nitrogen adjust
Save valve（5）, nitrogen inlet（6）, circular seal ring（8）, it is characterised in that：Nitrogen adjustment valve（5）Installed in nitrogen inlet（6）
On, nitrogen inlet（6）End divide two-way same connecting tube（2）It is connected, connecting tube（2）Connect nitrogen air cavity（3）；In stationary seal ring
（1）Inwall on it is equidistant or be non-equally machined with quantity be 3 main shaft seal groove（4a）, in main shaft seal groove（4a）Middle dress
There is main shaft seal circle（4）；In adjacent two main shaft seals groove（4a）Between in stationary seal ring（1）Inwall on be machined with quantity as 2
Nitrogen air cavity（3）, form dinitrogen gas air cavity, nitrogen air cavity（3）Through connecting tube（2）And nitrogen inlet（6）The threeway of end and
Elbow communicates with each other；In stationary seal ring（1）Top be machined with same nitrogen air cavity（3）Quantity it is equal and with nitrogen air cavity（3）Even
Logical connecting tube jack（2a）, in stationary seal ring（1）Outer peripheral wait is machined with the bolt hole that quantity is more than 1 on loop wire（1a）,
In stationary seal ring（1）Combination plane on be machined with circular seal groove（8a）, in circular seal groove（8a）In circular seal is housed
Circle（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721117420.3U CN207213172U (en) | 2017-09-01 | 2017-09-01 | Double-air-cavity micro-positive-pressure nitrogen sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721117420.3U CN207213172U (en) | 2017-09-01 | 2017-09-01 | Double-air-cavity micro-positive-pressure nitrogen sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207213172U true CN207213172U (en) | 2018-04-10 |
Family
ID=61826671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721117420.3U Active CN207213172U (en) | 2017-09-01 | 2017-09-01 | Double-air-cavity micro-positive-pressure nitrogen sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207213172U (en) |
-
2017
- 2017-09-01 CN CN201721117420.3U patent/CN207213172U/en active Active
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