CN212673280U - Self-control clearance type mortise lock sealing structure of air preheater - Google Patents
Self-control clearance type mortise lock sealing structure of air preheater Download PDFInfo
- Publication number
- CN212673280U CN212673280U CN202021059565.4U CN202021059565U CN212673280U CN 212673280 U CN212673280 U CN 212673280U CN 202021059565 U CN202021059565 U CN 202021059565U CN 212673280 U CN212673280 U CN 212673280U
- Authority
- CN
- China
- Prior art keywords
- mortise lock
- plate
- type
- air preheater
- shaped groove
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Landscapes
- Air Supply (AREA)
Abstract
The air preheater is from the clearance type mortise lock hermetically-sealed construction of the automatic control. Traditional air heater seals piece structure firmly can cause the wearing and tearing of traditional sealed piece firmly along with factors such as unit operation duration and the various complicated operating modes that meet coal fired boiler, and the air heater's that the wearing and tearing volume is big more air heater leaks out rate and also is big more. The utility model discloses the constitution includes: a mortise lock sealing device (29) installed on a rotor main partition plate (27) through bolts and a servo regulator assembly (18) welded on a rotor turning-out side (21) of the sector plate; the mortise lock sealing device comprises a U-shaped groove box (9), a core-wound retainer (2), a hard sealing sheet (1), an unlocking device assembly (14) and a mortise lock device assembly (4). The utility model is used for air heater automatic control clearance formula mortise lock is sealed.
Description
The technical field is as follows:
the utility model relates to an air heater automatic control clearance formula mortise lock seal structure.
Background art:
rotary air preheaters are important devices to improve boiler efficiency. In actual operation, the exhaust gas temperature, the heat exchange efficiency, the air leakage rate and the smoke resistance of the air preheater have direct influence on the efficiency of the coal-fired boiler. Wherein the air leakage rate of the air preheater directly affects the safety and the economical efficiency of the coal-fired boiler. The air leakage rate of the air preheater is well controlled mainly from three aspects of the design structure, the sealing form and the installation quality of the air preheater. Traditional air heater seals piece structure firmly can cause the wearing and tearing of traditional sealed piece firmly along with factors such as unit operation time and the various complicated operating modes that meet coal fired boiler, and the big air heater's of wearing and tearing volume rate of leaking out is also big more, therefore air heater's sealed clearance is directly proportional with the harm degree of sealed piece firmly. The air leakage of the hard sealing sheet is controlled within 6.5 percent within one year of operation, and the air leakage rate is increased to 8 to 10 percent in excess of one year. In order to obtain the energy-saving benefit brought by controlling the air leakage rate of the air preheater, the flexible sealing sheet is the most effective method for controlling the air leakage rate of the air preheater, and the flexible sealing is characterized in that the air preheater can seal the gap between the sector plate and the main partition plate under various thermal working conditions, so that the effect of controlling the air leakage rate of the air preheater is achieved.
The flexible sealing in the current market mainly comprises a brush type flexible sealing sheet, a folding contact type flexible sealing sheet, a box type flexible sealing sheet, a compensation type contact type sealing sheet and the like, and the folding contact type flexible sealing sheet is more applied.
The traditional hard sealing has the defects that:
1. short service life, easy wear, and need to be replaced, restored and adjusted in each maintenance period.
The installation difficulty is high, and the sealing clearance value of the air preheater reserved in the cold state is inconsistent with the clearance value of the air preheater in the actual hot state operation, so that the sealing clearance of the air preheater needs to be adjusted on line.
The effect of the traditional hard sealing fin on controlling the air leakage of the air preheater is increased along with the increase of the service time.
The folding contact type sealing piece has the following defects:
1. when the folding contact type sealing piece is used, the problems that the self-lubricating sealing block at the non-fixed end is blocked and the supporting spring falls off easily occur.
The contact of the folding contact type sealing piece and the sealing plate surface of the sector plate can cause the abrasion of the sector plate surface and directly influence the air leakage index of the air preheater.
For example, in a 300MW coal-fired boiler, the thermal deformation of the rotor of the air preheater at full load produces a seal clearance value that is greater than the effective seal range of the folded contact seal design.
The utility model has the following contents:
the utility model aims at solving the weak point of above-mentioned prior art, provide one kind at air heater cold attitude, not direct contact sector plate during the hot attitude, do not change the clearance value along with the heat altered shape of air heater rotor, can all the time control automatic control clearance formula mortise lock gasket and sector plate's face be in the parallel state to guarantee that both sealing clearance values all the time control is at 3-5 mm's air heater automatic control clearance formula mortise lock seal structure.
The above purpose is realized by the following technical scheme:
an air preheater automatic control clearance type mortise lock sealing structure comprises a mortise lock sealing device and a servo regulator assembly, wherein the mortise lock sealing device is installed on a rotor main partition plate through bolts, and the servo regulator assembly is welded on the rotating-out side of a sector plate rotor; the mortise lock sealing device comprises a U-shaped groove box, a core-wound retainer, a hard sealing sheet, an unlocking device assembly and a mortise lock device assembly; around heart formula fender bracket bottom establish through a set of elastic support subassembly U-shaped groove in, hard gasket inlay around heart formula fender bracket top, around heart formula fender bracket both sides install self-lubricating bearing, U-shaped groove box bottom install be used for with around the mortise lock subassembly of heart formula fender bracket upper and lower position locking, around heart formula fender bracket internally mounted have be used for with around the unlocking ware subassembly of heart formula fender bracket upper and lower position restoration.
The air preheater automatic control clearance type mortise lock sealing structure is characterized in that a mortise lock assembly comprises a saw-type rack, a saw-type ratchet and a mortise lock pin, the saw-type rack is fixed inside a U-shaped groove box, the saw-type ratchet is fixed at the bottom of the U-shaped groove box through a cylindrical pin shaft, the bottom of the U-shaped groove box is in sliding fit with the horizontally arranged mortise lock pin through a mounting frame, a cylindrical spring is sleeved on the mortise lock pin, and the end part of the mortise lock pin is inserted into an arc hole in a tail plate of the saw-type ratchet.
The air heater automatic control clearance type mortise lock sealing structure comprises an unlocking device connecting plate, an unlocking pressing plate and a lifting plate, wherein the unlocking device connecting plate is vertically fixed in the winding type protection frame, the unlocking pressing plate is fixed on the unlocking device connecting plate through a pin shaft, and the lifting plate is fixed at the bottom of the unlocking device connecting plate through a pin shaft.
The air preheater self-control gap type mortise lock sealing structure is characterized in that the elastic support assembly comprises a main support spring shaft and a main support spring, the top of the main support spring shaft is fixed inside the core-winding type retainer, the main support spring shaft is sleeved with the main support spring, and the bottom of the main support spring shaft penetrates through a round hole in the U-shaped groove box and is in sliding fit with the round hole.
The air preheater self-control gap type mortise lock sealing structure is characterized in that the number of the elastic supporting components is two, and the two elastic supporting components are distributed on two sides inside the core-wound type protection frame.
Has the advantages that:
1. the utility model discloses at air heater cold attitude, not direct contact sector plate during the hot attitude, do not change clearance value along with the heat altered shape of air heater rotor, can control the face of automatic control clearance formula mortise lock gasket and sector plate all the time and be in parallel state to guarantee that both sealed clearance values are controlled at 3-5mm all the time.
The utility model discloses convert contact form seal structure into the sealing form that is on a parallel with the planar non-contact of sector plate all the time. The self-control gap type mortise lock sealing piece can reasonably control the radial sealing gap values (including the inner side and the outer side) of the cold end and the hot end of the air preheater in cold state and hot state operation within the range of 3-5mm, thereby controlling the air leakage coefficient value within less than or equal to 4.5% for a long time.
The utility model discloses inlay and have sliding bearing around heart formula holder and transfer the crack board with the direction when getting into the sector plate and only produce rolling friction, not with the direct friction in sector plate surface, can effectively increase the life of sector plate, increase the live time of air leakage control system.
The utility model discloses can match the sealed scope at 30-70 mm's automatic control clearance formula mortise lock gasket according to the air heater's that the unit matches model.
The utility model discloses rational in infrastructure, it is convenient to dismantle, and the vulnerable part price is low, and it is convenient to change, and the cost of overhaul is low.
The utility model discloses a programme-controlled system adopts PLC data transmission control, can be according to the sealed clearance value of unit load, the change automatic adjustment of temperature isoparametric, the effectual economic benefits who brings air heater.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a working schematic diagram of the present invention;
FIG. 4 is an assembly view of the present invention in use;
fig. 5 is an unlocking schematic diagram of the present invention;
in the figure: 1. a hard seal fin; 2. a centered cage; 3. a self-lubricating bearing; 4. a latch assembly; 5. an unlocker connection plate; 6. a main support spring shaft; 7. a saw-type rack; 8. a saw-type ratchet; 9. a U-shaped slot box; 10. a main support spring; 11. unlocking the pressing plate; 12. a lifting plate; 13. a latch pin; 14. an unlocker assembly; 15. pressing a plate; 16. a circular arc hole; 17. a cylindrical spring; 18. a servo adjuster assembly; 19. a servo electric telescopic cylinder; 20. a central connecting rod; 21. the rotating-out side of the sector plate rotor; 22. a gap-adjusting lower pressing plate; 23. pressing a plate; 24. a d-shaped plate; 25. the surface of the sector plate; 26. the rotating side of the sector plate rotor; 27. a rotor main diaphragm; 28. a sector plate; 29. a mortise lock sealing device; 30. rotor angle steel.
The specific implementation mode is as follows:
example 1:
an air preheater self-controlled clearance type mortise lock sealing structure comprises a mortise lock sealing device 29 which is installed on a rotor main partition plate 27 through bolts and a servo regulator assembly 18 which is welded on a rotating-out side 21 of a sector plate rotor;
the mortise lock sealing device comprises a U-shaped groove box 9, a core-wound retainer 2, a hard sealing sheet 1, an unlocking device assembly 14 and a mortise lock device assembly 4;
around heart formula fender bracket bottom establish through a set of elastic support subassembly U-shaped groove in, the hard gasket inlay around heart formula fender bracket top, around heart formula fender bracket both sides install self-lubricating bearing 3, U-shaped groove box bottom install be used for with around the mortise lock subassembly of heart formula fender bracket upper and lower position locking, around heart formula fender bracket internally mounted have be used for with around the unlocking ware subassembly of heart formula fender bracket upper and lower position restoration.
Example 2:
the air preheater self-control gap type mortise lock sealing structure comprises a mortise lock assembly, wherein the mortise lock assembly comprises a saw-type rack 7, a saw-type ratchet 8 and a mortise lock pin 13, the saw-type rack is fixed inside a U-shaped groove box, the saw-type ratchet is fixed at the bottom of the U-shaped groove box through a cylindrical pin shaft, the bottom of the U-shaped groove box is in sliding fit with the horizontally arranged mortise lock pin through a mounting frame, a cylindrical spring 17 is sleeved on the mortise lock pin, and the end part of the mortise lock pin is inserted into an arc hole 16 on a tail plate 15 of the saw-type ratchet.
Example 3:
according to embodiment 1 or 2 air heater automatic control clearance formula mortise lock seal structure, the ware subassembly of unlocking include the ware connecting plate of unlocking 5, unblock clamp plate 11 and lifting plate 12, the ware connecting plate of unlocking vertically fix the heart formula fender bracket of winding in, the ware connecting plate of unlocking on be fixed with the unblock clamp plate through the round pin axle, the ware connecting plate of unlocking bottom be fixed with the lifting plate through the round pin axle.
Example 4:
according to the self-control clearance type mortise lock sealing structure of the air preheater in the embodiment 1, 2 or 3, the elastic support assembly comprises a main support spring shaft 6 and a main support spring 10, the top of the main support spring shaft is fixed inside the winding type retainer, the main support spring shaft is sleeved with the main support spring, and the bottom of the main support spring shaft penetrates through a round hole in the U-shaped groove box and is in sliding fit with the round hole.
Example 5:
according to the self-control gap type mortise lock sealing structure of the air preheater in the embodiment 1, 2, 3 or 4, the number of the elastic supporting assemblies is two, and the two elastic supporting assemblies are distributed on two sides inside the core-around type protection frame.
Example 6:
according to embodiment 1 or 2 or 3 or 4 or 5, the air preheater automatic control clearance type mortise lock seal structure, the servo regulator subassembly include servo electronic telescoping cylinder 19, central connecting rod 20, transfer clearance holding down plate 22 and d shaped plate 24, the push rod of servo electronic telescoping cylinder fixed with central connecting rod, central connecting rod bottom and transfer clearance holding down plate rotatable fit, transfer clearance holding down plate bottom and clamp plate 23 welding, transfer clearance holding down plate and d shaped plate pass through the pivot and be connected, d shaped plate welding the sector plate rotor turn-out side.
The functions of the components are as follows:
u-shaped groove box: the U-shaped groove box is used as an external fixing main body of the self-control gap type mortise lock sealing sheet and mainly has three functions, one of which can effectively prevent parts such as an internal winding retainer assembly, an unlocking device assembly and the like from being directly washed and influenced by boiler smoke, and the service life of each part is prolonged. And secondly, the air leakage between the main partition plate of the rotor of the air preheater and the sector plate is isolated. Thirdly, the U-shaped groove box plays a role in fixing parts such as the unlocking device assembly, the saw-type ratchet and the like.
A centered cage assembly: the core-wound retainer adopts a concentric structural design with symmetrical circular arc edges, and is formed by combining a saw-type rack, a self-lubricating bearing, an embedded hard sealing sheet and a main supporting spring. The centering type retainer assembly is assembled in the U-shaped groove box for use, and the centering type retainer can move up and down in the U-shaped groove box under the supporting force of the main supporting spring. When mushroom-shaped deformation occurs to the air preheater rotor, each self-control gap type mortise lock sealing sheet can automatically adjust the sealing gap, the locking distance of the left side and the right side of the centering type retainer can be changed in the adjusting process, but the sealing gap value of the controlled air preheater can be kept unchanged from 3 mm to 5 mm.
A latch assembly: the latch assembly is composed of a saw-type ratchet, a latch pin, a cylindrical spring and the like. The mortise lock device is fixed on the U-shaped groove box by a cuboid pin shaft, and a mortise lock pin and a cylindrical spring assembly are arranged in the mortise lock device. The acting force of the cylindrical spring can insert the mortise lock pin into the lower arc hole at the tail part of the saw-type ratchet, so that the mortise lock pin can ensure the levelness of the saw-type ratchet and can effectively fix the saw-type ratchet to prevent the saw-type ratchet from reversing. The saw type ratchet is fixed on the U-shaped groove box by a round pin shaft and is mainly matched with the saw type rack and the unlocking device component for use. When the self-control clearance type mortise lock sealing sheet is subjected to acting force brought by the guide clearance adjusting plate at the rotating-in side of the fan-shaped plate, the core-wound retainer inside the self-control clearance type mortise lock sealing sheet moves downwards, in the moving process, the saw-type rack on the core-wound retainer is kept in an engaged state with the saw-type ratchet by the thrust of the horizontal spring, and meanwhile, the lower arc insertion hole at the tail part of the saw-type ratchet is in an inserted state with the mortise lock pin in the mortise lock device.
The unlocking device component: the unlocking device component is formed by combining an unlocking pressing plate, a lifting plate and an unlocking device connecting plate, and is mainly matched with the servo electric adjuster for use. An unlocking device connecting plate of the unlocking device component is fixed on the core-wound retainer, and the unlocking pressing plate and the lifting plate are fixed on the unlocking device connecting plate by pin shafts. When the wound retainer bears the downward pressure of the pressure plate of the servo regulator from the lubricating shaft, the wound retainer moves downward in the U-shaped groove box, when the embedded hard sealing sheet moves to a distance of about 5-0mm from the upper edge of the U-shaped groove box, the unlocking pressure plate in the unlocking device assembly presses the tail part of the saw-type ratchet downward to separate the lower arc hole of the saw-type ratchet from the mortise lock pin, the mortise lock pin is inserted into the upper arc hole of the tail part of the saw-type ratchet again under the action of the cylindrical spring after the separation, and the saw-type ratchet and the saw-type rack are in a separation state at the moment. Under the supporting force of the main supporting spring, the core-wound retainer starts to restore to the original position quickly, at the moment, the lifting plate of the unlocking device assembly moves upwards quickly along with the core-wound retainer, the lifting plate strikes a bottom plate of the saw-type ratchet in the moving process to separate an upper arc hole at the tail of the saw-type ratchet from the mortise lock pin, and the mortise lock pin is inserted into the upper arc hole of the saw-type ratchet again to restore the original position of the saw-type ratchet.
The working principle is as follows:
as shown in figures 3 and 4, the self-controlled gap mortise lock is hermetically fixed on the main rotor partition of the air preheater, and the installation height of the U-shaped groove box is lower than or equal to the upper surface of the rotor angle steel 30 of the air preheater in the assembling process. The distance of the core-around type retainer required to extend out of the U-shaped groove box is determined according to different types of air preheaters, for example, air preheaters equipped with 300mw units, the effective sealing range of the self-control clearance type mortise lock seal can be designed to be 35mm-50mm, and the designed sealing range is called as the effective locking distance, namely the lock distance.
Before the self-control gap type mortise lock sealing piece is transferred into the air preheater sector plate 28, firstly, sliding friction is generated between the self-control gap type mortise lock sealing piece and the guide gap fixing plate, the core-wound type retainer starts to move towards the inside of the U-shaped groove box, and at the moment, the lock distances on two sides of the core-wound type retainer start to change. When the automatic gap type mortise lock sealing piece is rotated to the surface 25 of the sector plate, the mortise lock component fixes the core-wound retainer by using the saw-type ratchet wheel, and the distance between the hard sealing piece embedded on the core-wound retainer and the surface of the sector plate is 3-5mm, so that the non-contact sealing principle of the air preheater is realized.
The d-shaped plate of the servo regulator assembly is welded and fixed on the rotor turning-out side of the sector plate, and the stroke and the speed of the vertical movement of the pressing plate in the servo regulator are controlled by the central connecting rod driven by the servo electric cylinder. The servo regulator is matched with unlocking for use, and the function of restoring the wound retainer to the original position can be realized. For example, a design pitch of 50mm, an unlocking distance of 5-0mm, and an effective sealing range of 45 mm. When the pressure plate of the servo regulator presses the self-lubricating bearing on the core-winding type retainer to 5-0mm of lock distance, the saw-type ratchet in the unlocking device and the saw-type rack on the core-winding type retainer are in a disengaged state, and the core-winding type retainer is automatically restored to the initial position under the action of the main supporting spring. The servo regulator adopts PLC program control, the PLC system can judge the deformation state of the rotor according to the parameters of the load, the temperature and the like of the unit, and the program is utilized to calculate the pressing stroke and the pressing time of the servo regulator, thereby ensuring the long-term stability of the air leakage value.
Claims (6)
1. The utility model provides an air heater automatic control clearance formula mortise lock seal structure which characterized by: the self-control gap type mortise lock sealing structure of the air preheater comprises a mortise lock sealing device which is arranged on a main partition plate of the rotor through bolts and a servo regulator component which is welded on the rotating-out side of the rotor of the sector plate;
the mortise lock sealing device comprises a U-shaped groove box, a core-wound retainer, a hard sealing sheet, an unlocking device assembly and a mortise lock device assembly;
around heart formula holder bottom establish through a set of elastic support subassembly U-shaped groove in, the hard gasket inlay around heart formula holder top, around heart formula holder both sides install self-lubricating bearing, U-shaped groove bottom install be used for with around the mortise lock subassembly of heart formula holder upper and lower position locking, around heart formula holder internally mounted have be used for with around the unlocking ware subassembly of heart formula holder upper and lower position reset.
2. An air preheater self-controlled gap type mortise lock seal structure according to claim 1, characterized in that: the mortise lock assembly comprises a saw-type rack, a saw-type ratchet and a mortise lock pin, the saw-type rack is fixed inside the U-shaped groove box, the saw-type ratchet is fixed at the bottom of the U-shaped groove box through a cylindrical pin shaft, the bottom of the U-shaped groove box is in sliding fit with the horizontally arranged mortise lock pin through an installation frame, a cylindrical spring is sleeved on the mortise lock pin, and the end part of the mortise lock pin is inserted into an arc hole in a tail plate of the saw-type ratchet.
3. An air preheater self-controlled gap type mortise lock seal structure according to claim 2, characterized in that: the unlocking device assembly comprises an unlocking device connecting plate, an unlocking pressing plate and a lifting plate, the unlocking device connecting plate is vertically fixed in the core-winding type retainer, the unlocking pressing plate is fixed on the unlocking device connecting plate through a pin shaft, and the lifting plate is fixed at the bottom of the unlocking device connecting plate through a pin shaft.
4. An air preheater self-controlled gap type mortise lock seal structure according to claim 3, characterized in that: the elastic support assembly comprises a main support spring shaft and a main support spring, the top of the main support spring shaft is fixed inside the centering type retainer, the main support spring shaft is sleeved with the main support spring, and the bottom of the main support spring shaft penetrates through a round hole in the U-shaped groove box and is in sliding fit with the round hole.
5. An air preheater self-controlled gap type mortise lock seal structure according to claim 4, characterized in that: the number of the elastic supporting components is two, and the two elastic supporting components are distributed on two sides in the core-wound retainer.
6. An air preheater self-controlled gap type mortise lock seal structure according to claim 5, characterized in that: the servo adjuster assembly comprises a servo electric telescopic cylinder, a central connecting rod, a gap adjusting lower pressing plate and a d-shaped plate, wherein a push rod of the servo electric telescopic cylinder is fixed with the central connecting rod, the bottom of the central connecting rod is in rotatable fit with the gap adjusting lower pressing plate, the gap adjusting lower pressing plate is connected with the d-shaped plate through a rotating shaft, and the d-shaped plate is welded on a turning-out side of a sector plate rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021059565.4U CN212673280U (en) | 2020-06-10 | 2020-06-10 | Self-control clearance type mortise lock sealing structure of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021059565.4U CN212673280U (en) | 2020-06-10 | 2020-06-10 | Self-control clearance type mortise lock sealing structure of air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212673280U true CN212673280U (en) | 2021-03-09 |
Family
ID=74823005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021059565.4U Expired - Fee Related CN212673280U (en) | 2020-06-10 | 2020-06-10 | Self-control clearance type mortise lock sealing structure of air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212673280U (en) |
-
2020
- 2020-06-10 CN CN202021059565.4U patent/CN212673280U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201954964U (en) | Sealing device for trolley of sintering annular cooler | |
| CN203477307U (en) | Flexible contact sealing device using sealing hinge component | |
| CN102032785B (en) | Sealing device for trolley of sintering circular cooler | |
| CN212673280U (en) | Self-control clearance type mortise lock sealing structure of air preheater | |
| CN105570462A (en) | Elastic contact type sealing device for rotary air preheater | |
| CN206131046U (en) | Self -adaptation trailing type sealing device of rotary type heat exchanger | |
| CN112032758A (en) | Hot end radial sealing device of self-adaptation air preheater rotor thermal deformation | |
| CN107894007B (en) | Hot end radial sealing system of floating air preheater | |
| CN205561623U (en) | Setting is at elastic sealing device in air preheater hot junction | |
| CN201731507U (en) | Elastic clearance self-compensating sealing device for rotary air preheater | |
| CN205027194U (en) | Rotation type air heater contacts from sealing device a little | |
| CN202733937U (en) | Wind film sealing system for rotary air preheater | |
| CN107388277B (en) | Air preheater sealing structure, rotary air preheater and boiler | |
| CN210373526U (en) | Rolling flexible dynamic sealing device of air preheater | |
| CN212618419U (en) | Hot end radial sealing device capable of self-adapting to thermal deformation of air preheater rotor | |
| CN112524631A (en) | Long-life sealing device for rotary air preheater of thermal power boiler | |
| CN203550619U (en) | Afterheat power generation flue gas negative pressure self-compensation sealing device for ring cooling machine | |
| CN2373643Y (en) | High-temperature resistant gas steel plate sluice valve | |
| CN208963947U (en) | A kind of circulating fluidized bed boiler Scraper tail bearing sealing device | |
| CN215893389U (en) | Clamping sleeve type local floating sector plate for sealing air preheater and mounting structure thereof | |
| CN208124354U (en) | Rotary regenerative air heater fixed interval (FI) sealing structure | |
| CN100356128C (en) | Spoke type sealing device for rotary air preheater | |
| CN111442293A (en) | Energy-saving improved sealing system of air preheater | |
| CN201373423Y (en) | Sealing device for air preheater | |
| CN202188844U (en) | Check-type and mechanical sensor device for air preheater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210309 |