CN202145114U - Axial isolation sealed cabin for no-leakage sealing system of rotary type gas/gas heat exchanger - Google Patents
Axial isolation sealed cabin for no-leakage sealing system of rotary type gas/gas heat exchanger Download PDFInfo
- Publication number
- CN202145114U CN202145114U CN201120240484U CN201120240484U CN202145114U CN 202145114 U CN202145114 U CN 202145114U CN 201120240484 U CN201120240484 U CN 201120240484U CN 201120240484 U CN201120240484 U CN 201120240484U CN 202145114 U CN202145114 U CN 202145114U
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- rotor
- heat exchanger
- gas
- fan
- sealing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
An axial isolation sealed cabin for a no-leakage sealing system of a rotary type gas/gas heat exchanger particularly relates to an improved sealing device for a rotary type gas/gas heat exchanger, and comprises a rotor (1), a casing (2), a sealing system and a transmission device, wherein labyrinth isolation sealing segments (5) are respectively arranged on a ring-shaped chamber surrounded by the casing (2) and the rotor (1) and close to two sides of a fan-shaped seal plate (3); and an isolation air pipeline is arranged at the part of the casing (2) positioned between the two adjacent isolation sealing segments (5) and connected with a low-leakage blower. The axial isolation sealed cabin provided by the utility model has the advantages of good sealing effect and low air leakage rate.
Description
Technical field
The utility model relates to heat exchanger, is specifically related to a kind of improvement of swinging gas-gas heat exchanger sealing device.
Background technology
Swinging flue gas heat exchange device (GGH) be present wet method FGD device use flue gas heat exchange device the most widely; Its operation principle is identical with the rotary air preheater of power plant's major project, is the cold flue gas after purifying through the heat transferred level and smooth or sheet metal of band ripple or the high-temperature flue gas that thermophore will not purify.The flue gas that does not purify is through a side of rotor, and flue gas after being purified is through the opposite side of rotor.Rotor rotates lentamente, like this heat transfer element flue gas after the not flue through heat and the cold purification in turn.When flue was not through heat transfer element, the part heat had not been passed to heat transfer element in the flue.When heat transfer element forwarded purification back fume side to, its entrained heat had been passed to again and has been purified the back flue gas, and therefore with the raising of flue gas after being purified temperature, itself is cooled heat transfer element.Two parts that these two strands of flue gases separate from rotor along diameter respectively flow through, and these two parts are separated by sealing plate, and the flow direction of two strands of air-flows is opposite.
GGH is made up of several parts of cylindrical rotor, cylindrical housing, transmission device, sealing device and soot blower system.Rotor is divided into many fan-shaped storehouses lattice, has filled the heat transfer element of being made up of corrugated sheet in each fanlight.Rotor cross-section is separated into former flue gas and clean two Circulation Areas of flue gas, is separated by transition region between two Circulation Areas.Former flue gas district links to each other with the import and export flue respectively with clean flue gas district.On the rotor circumference, annular rack is housed, motor drives the rotor rotation through transmission device.Heating surface is alternately through former flue gas district and clean flue gas district, and former flue gas is from bottom to top with the heat transferred heating surface, and when this part heating surface forwarded clean flue gas district to, the heat that will accumulate was again passed to the clean flue gas that flows from top to bottom.Rotor whenever circles, and promptly accomplishes a diabatic process.Transition region is the seal area that former flue gas district and clean flue gas district are separated, because the clean flue gas pressures of pressure ratio of former flue gas is big, goes into clean flue gas district in order to prevent former flue gas through the clearance leakage between rotor and the shell, the GGH device radially, hoop and axial seal.
The swinging GGH majority that present domestic desulphurization system is used all is to introduce external technology (U.S., Germany, France), exists all in the various rotary GGH that introduces that sealing effectiveness is good inadequately, the higher defective of air leak rate of air curtain.The air leak rate of air curtain guarantee value is 0.5-1%, and air leak rate of air curtain often can't reach guarantee value during practical application, and statistical test result GGH air leak rate of air curtain preferably can reach 0.8%; On average reach 1.5%; Minimum reaches 0.6%, and the most serious 10% (the magnificent electric Laiwu) that surpass seriously rings the total efficient of desulphurization system.
Summary of the invention
The utility model technical problem to be solved is: the swinging gas-gas heat exchanger inclusion seal system axial isolating seal cabin that a kind of good sealing effect is provided.
The technical solution of the utility model is: it comprises rotor, shell, sealing system and transmission device; It is characterized in that; The ring casing that said shell and rotor surround is respectively equipped with labyrinth type isolating seal section near the place of fan-shaped sealing plate both sides, and the part of shell between adjacent two seal sections is provided with the isolation air pipe line and is connected with low leakage fan.
The technique effect of the utility model is: it has good sealing effect, the advantage that air leak rate of air curtain is low.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the A-A structural representation of Fig. 1;
Fig. 3 is the B-B structural representation of Fig. 1;
Fig. 4 is the C-C structural representation of Fig. 1;
Fig. 5 is the structural representation of embodiment two seal sections;
Fig. 6 is the structural representation of embodiment three seal sections.
The specific embodiment
Shown in Fig. 1 to 4, it comprises rotor 1, shell 2, sealing system and transmission device, and shell 2 is respectively equipped with two pairs of fan-shaped sealing plates 3 in the two ends of rotor, has slotted hole 4 on the said fan-shaped sealing plate 3 and be provided with the isolation air pipe line to be connected with low leakage fan.
The ring casing that said shell 2 and rotor 1 surround is respectively equipped with labyrinth type isolating seal section 5 near the place of fan-shaped sealing plate 3 both sides, and shell 2 is provided with in the part of 5 of adjacent two isolating seal sections isolates air pipe line and be connected with low leakage fan.
Be respectively equipped with pressure sensor on pipeline that said and low leakage fan output is connected and the former fume side pipeline; Be connected with differential pressure transmitter 6 between two pressure sensors, differential pressure transmitter 6 is connected with the aperture that can control low leakage fan export pipeline valve or the low controller that leaks electric machine frequency.
Matching air box (perhaps pipeline) isolating low leakage wind is gone up the setting pressure measuring point; On corresponding with it former fume side pipeline, install pressure-measuring-point additional; Differential pressure transmitter 6 is installed between pressure-measuring-point; Differential pressure signal is delivered to the special-purpose PLC or the DCS of central station of floating dock, utilize the variation of differential pressure signal accurately to adjust the aperture of the low leakage fan export pipeline valve of control or hang down the frequency of leaking motor, reach the accurately effect of adjustment, energy-saving run of sealing.
Adjustment rationally purges wind flow, requires to reach 1.5-2 and doubly turns round and carry leak volume.
Adopt this series technique can swinging GGH air leak rate of air curtain be reduced to 0.1-0.4%, surpass the present leading level in the world.The every month cost-saved hundreds of thousands of every 600MW unit unit.
Embodiment one:
As shown in Figure 4, run slotted hole 4 and install sealing air pipe distance additional in fan-shaped sealing plate 3 axis of symmetry places up and down at drive end and anti-drive end, feed and isolate the low wind that leaks.Feed the low formation effective isolation air curtain between two pairs of fan-shaped sealing plates 3 and the rotor 1 that leaks behind the wind up and down.Setting pressure measuring point on matching air box that purges wind or pipeline; On corresponding with it former fume side pipeline, install pressure-measuring-point additional; Differential pressure transmitter 6 is installed between pressure-measuring-point; Differential pressure signal is delivered to the special-purpose PLC or the DCS of central station of floating dock, utilize the variation of differential pressure signal accurately to adjust the aperture of the low leakage fan export pipeline valve of control or hang down the frequency of leaking motor, reach the accurately effect of adjustment, energy-saving run of sealing.
Embodiment two:
As shown in Figure 5, said labyrinth type isolating seal section is made up of sealing plate 7 and rotor 1 periphery, and sealing plate 7 its inwalls are the arcwall face that adapts with rotor 1 periphery, and sealing plate 7 is fixed on shell 2 inwalls.This kind structure is suitable for being fixed with on rotor 1 periphery situation of axial seal sheet 8; Place (drive end and anti-drive end) near fan-shaped sealing plate 3 in the ring casing that is surrounded by rotor 1 and shell 2 respectively installs two arc sealing plates 7 additional; Totally four sealing plates 7 respectively form an axial isolation sealed compartment 9 at drive end and anti-drive end.The seal section of each axial isolation sealed compartment 9 both sides forms multi-stage sealed little space by GGH rotor 1 axial seal sheet 8 with arc sealing plate 7, constitutes labyrinth seal structure, the enhanced leaktightness effect.The low wind that leaks is isolated in axial isolation sealed compartment 9 accesses at drive end and anti-drive end, isolates indoor former flue gas of shroud driving ring and clean flue gas, forms the indoor isolating seal of shroud driving ring, stops and leaks.
Embodiment three:
As shown in Figure 6, said labyrinth type isolating seal section is made up of the some axial seal sheets and rotor 1 periphery that are fixed on shell 2 inwalls.It is smooth periphery that this kind structure is suitable for rotor 1 periphery.
Claims (2)
1. swinging gas-gas heat exchanger inclusion seal system axial isolating seal cabin; Comprise rotor (1), shell (2), sealing system and transmission device; It is characterized in that; The ring casing that said shell (2) and rotor (1) surround is respectively equipped with labyrinth type isolating seal section (5) near the place of fan-shaped sealing plate (3) both sides, and the part of shell (2) between adjacent two isolating seal sections (5) is provided with the isolation air pipe line and is connected with low leakage fan.
2. swinging gas-gas heat exchanger inclusion seal system axial isolating seal as claimed in claim 1 cabin; It is characterized in that; Be respectively equipped with pressure sensor on pipeline that said and low leakage fan output is connected and the former fume side pipeline; Be connected with differential pressure transmitter (6) between two pressure sensors, differential pressure transmitter (6) is connected with the aperture that can control low leakage fan export pipeline valve or the low controller that leaks electric machine frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120240484U CN202145114U (en) | 2011-07-09 | 2011-07-09 | Axial isolation sealed cabin for no-leakage sealing system of rotary type gas/gas heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120240484U CN202145114U (en) | 2011-07-09 | 2011-07-09 | Axial isolation sealed cabin for no-leakage sealing system of rotary type gas/gas heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202145114U true CN202145114U (en) | 2012-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120240484U Expired - Lifetime CN202145114U (en) | 2011-07-09 | 2011-07-09 | Axial isolation sealed cabin for no-leakage sealing system of rotary type gas/gas heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202145114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200407A (en) * | 2011-07-09 | 2011-09-28 | 程爱平 | Axial isolating sealed cabin of leak-free sealing system of rotary gas-gas heater |
-
2011
- 2011-07-09 CN CN201120240484U patent/CN202145114U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200407A (en) * | 2011-07-09 | 2011-09-28 | 程爱平 | Axial isolating sealed cabin of leak-free sealing system of rotary gas-gas heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120215 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |