CN204373853U - For air cooling coal unit vacuum leakage detection segmentation closure plate - Google Patents
For air cooling coal unit vacuum leakage detection segmentation closure plate Download PDFInfo
- Publication number
- CN204373853U CN204373853U CN201420859401.8U CN201420859401U CN204373853U CN 204373853 U CN204373853 U CN 204373853U CN 201420859401 U CN201420859401 U CN 201420859401U CN 204373853 U CN204373853 U CN 204373853U
- Authority
- CN
- China
- Prior art keywords
- leakage detection
- air
- closure plate
- welded
- air cooling
- 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.)
- Active
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses for air cooling coal unit vacuum leakage detection segmentation closure plate, it comprises six block plates, and six blocks of described steel plates piece together circular steel plate, is welded to connect between adjacent described steel plate, and the side of the described circular steel plate be welded into is provided with reinforcement.Air-cooled Unit steam exhaust device adds the method for segmentation closure plate leakage detection, successfully solves this difficult problem.Bottom steam exhaust device and coagulation hydroenergy backwater pipeline in install additional respectively the utility model segmentation closure plate, steam exhaust device and Air-Cooling Island platform are divided into two independently space carry out leakage detection.Adopt traditional douche to carry out leakage detection for steam exhaust device part, and adopt air pressure leakage detection to Air-Cooling Island platform, according to GEA company air cooling tubes condenser steam tight test code, air cooling tubes condenser is suppressed pressure and is decided to be 0.035MPa.The leakage inspection method traditional compared with Air-cooled Unit, the method has safe, reliable, efficient advantage, effectively solves the difficult problem that pressure in traditional leakage detection process is difficult to maintain.
Description
Technical field:
The utility model relates to a kind of segmentation closure plate, particularly relates to a kind of for air cooling coal unit vacuum leakage detection segmentation closure plate.
Background technology:
China is the country of a lack of water, and freshwater resources occupancy volume is only 1/4th of the world per capita.In the northern area of China, limit by water resource, Thermal Power Plant Construction is favored more to Air-cooled Unit, and the successful exploitation of large-scale air cooling unit is of great significance " transferring electricity from the west to the east " tool.As everyone knows, Vacuum System Tightness of Steam Turbines is one of principal economic indicators of examination genset, and it directly affects the economical operation of genset.Vacuum tightness declines, and can cause adverse effect to operating unit, one is affect the Air-cooled Unit coefficient of heat transfer, and generatine set heat efficiency declines; Two is that oxygen content of condensate raises, and corrosion steam turbine, boiler plant, affect the safe operation of unit; Three is that winter low temperature environment condensate water is easily frozen, and damages heat radiator.
At present, the vacuum Technology of Leak-checking by Gas of domestic wet type cooling unit is comparatively ripe, and the steam exhaust device complicated and huge for Air-cooled Unit, does not also have effective leakage inspection method in industry.Some Domestic Air-cooled Unit adopts and passes into compressed-air actuated method to steam exhaust device, checks vacuum tightness.Low pressure (LP) cylinder blow-out disc operating pressure is 0.034-0.048MPa, if pass into pressurized air directly to steam exhaust device to suppress leakage detection, there is certain security risk.Meanwhile, in system, pressure is difficult to maintain (rotor shaft seal place cannot seal), also greatly reduces the feasibility of the method.On this basis, derive another kind of leakage inspection method, by operation blow-off line gateway door, to blow-off line independence air pressure leakage detection, because admission butterfly valve volume is comparatively large, butterfly valve seal performance is difficult to ensure, therefore leakage detection effect is unsatisfactory.In order to solve this difficult problem, part homotype unit adopts steam exhaust device douche leakage detection, pours water to condenser throat, utilizes water Air-Cooling Island system and low pressure (LP) cylinder effectively to be isolated, carry out leakage detection respectively.In unit running process, blow-off line only plays steam guide functions, not load-bearing, pours water to condenser throat, and huge hydraulic pressure likely causes irreversible damage to blow-off line, expansion joint etc.
Utility model content:
The purpose of this utility model is to provide a kind of for air cooling coal unit vacuum leakage detection segmentation closure plate.
The utility model is implemented by following technical scheme, for air cooling coal unit vacuum leakage detection segmentation closure plate, it comprises six block plates, and six blocks of described steel plates piece together circular steel plate, be welded to connect between adjacent described steel plate, the side of the described circular steel plate be welded into is provided with reinforcement.As calculated, segmentation closure plate weight is about 2.2 tons, considers on-site actual situations, is divided into by segmentation closure plate 6 pieces to carry out assembled, welding respectively.Consider that segmentation closure plate splicing rear center position intensity declines, we adopt the two-sided mode adding reinforcement of segmentation closure plate to improve segmentation closure plate intensity.
Radial direction along described circular steel plate is uniformly distributed and is welded with the horizontally disposed described reinforcement of the six roots of sensation, be arranged in middle four horizontally disposed described reinforcements, often all be welded with four described reinforcements vertically welded between adjacent two described reinforcements, the horizontally disposed described reinforcement that the two ends of the described reinforcement that every root vertically welds are adjacent respectively is welded to connect.
The door-plate that described circular steel plate is provided with manhole door and matches with described manhole door.When segmentation closure plate is installed, after inner side has been welded by construction worker, outside manhole door to segmentation closure plate, then door-plate is welded on manhole door, manhole door is sealed.
The thickness of described circular steel plate is 10mm-16mm.
Described reinforcement is 14cm channel-section steel, and often adjacent two horizontally disposed described reinforcement spacing are 700mm.
Advantage of the present utility model: Air-cooled Unit steam exhaust device adds the method for segmentation closure plate leakage detection, successfully solves this difficult problem.Bottom steam exhaust device and coagulation hydroenergy backwater pipeline in install additional respectively the utility model segmentation closure plate, steam exhaust device and Air-Cooling Island platform are divided into two independently space carry out leakage detection.Adopt traditional douche to carry out leakage detection for steam exhaust device part, and adopt air pressure leakage detection to Air-Cooling Island platform, according to GEA company air cooling tubes condenser steam tight test code, air cooling tubes condenser is suppressed pressure and is decided to be 0.035MPa.The leakage inspection method traditional compared with Air-cooled Unit, the method has safe, reliable, efficient advantage, effectively solves the difficult problem that pressure in traditional leakage detection process is difficult to maintain.
Accompanying drawing illustrates:
Fig. 1 is for air cooling coal unit vacuum leakage detection segmentation blind structure schematic diagram.
Steel plate 1, circular steel plate 2, reinforcement 3, manhole door 4.
Embodiment:
For air cooling coal unit vacuum leakage detection segmentation closure plate, it comprises six block plates 1, six block plates 1 piece together circular steel plate 2, be welded to connect between adjacent steel plate 1, the thickness being arranged on the circular steel plate 2 bottom steam exhaust device is 10mm, and the thickness being arranged on circular steel plate 2 in coagulation hydroenergy backwater pipeline is 16mm.The side of the circular steel plate 2 be welded into is provided with reinforcement 3.As calculated, segmentation closure plate weight is about 2.2 tons, considers on-site actual situations, is divided into by segmentation closure plate 6 pieces to carry out assembled, welding respectively.Consider that segmentation closure plate splicing rear center position intensity declines, we adopt the two-sided mode adding reinforcement of segmentation closure plate to improve segmentation closure plate intensity.Radial direction along circular steel plate 2 is uniformly distributed and is welded with the horizontally disposed reinforcement 3 of the six roots of sensation, be arranged in middle four horizontally disposed reinforcements 3, often all be welded with four reinforcements 3 vertically welded between adjacent two reinforcements 3, the horizontally disposed reinforcement 3 that the two ends of the reinforcement 3 that every root vertically welds are adjacent respectively is welded to connect.Reinforcement 3 is 14cm channel-section steel, and often adjacent two horizontally disposed reinforcement 3 spacing are 700mm.The door-plate that circular steel plate 2 is provided with manhole door 4 and matches with manhole door 4.When segmentation closure plate is installed, after inner side has been welded by construction worker, outside manhole door 4 to segmentation closure plate, then door-plate is welded on manhole door 4, manhole door 4 is sealed.
Claims (5)
1., for air cooling coal unit vacuum leakage detection segmentation closure plate, it is characterized in that, it comprises six block plates, and six blocks of described steel plates piece together circular steel plate, is welded to connect between adjacent described steel plate, and the side of the described circular steel plate be welded into is provided with reinforcement.
2. according to claim 1 for air cooling coal unit vacuum leakage detection segmentation closure plate, it is characterized in that, radial direction along described circular steel plate is uniformly distributed and is welded with the horizontally disposed described reinforcement of the six roots of sensation, be arranged in middle four horizontally disposed described reinforcements, often all be welded with four described reinforcements vertically welded between adjacent two described reinforcements, the horizontally disposed described reinforcement that the two ends of the described reinforcement that every root vertically welds are adjacent respectively is welded to connect.
3. according to claim 2 for air cooling coal unit vacuum leakage detection segmentation closure plate, it is characterized in that, the door-plate that described circular steel plate is provided with manhole door and matches with described manhole door.
4. according to claim 1-3 any one for air cooling coal unit vacuum leakage detection segmentation closure plate, it is characterized in that, the thickness of described circular steel plate is 10mm-16mm.
5. according to claim 1-3 any one for air cooling coal unit vacuum leakage detection segmentation closure plate, it is characterized in that, described reinforcement is 14cm channel-section steel, and often adjacent two horizontally disposed described reinforcement spacing are 700mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859401.8U CN204373853U (en) | 2014-12-30 | 2014-12-30 | For air cooling coal unit vacuum leakage detection segmentation closure plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859401.8U CN204373853U (en) | 2014-12-30 | 2014-12-30 | For air cooling coal unit vacuum leakage detection segmentation closure plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204373853U true CN204373853U (en) | 2015-06-03 |
Family
ID=53330063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420859401.8U Active CN204373853U (en) | 2014-12-30 | 2014-12-30 | For air cooling coal unit vacuum leakage detection segmentation closure plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204373853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677420A (en) * | 2016-08-02 | 2018-02-09 | 新特能源股份有限公司 | A kind of spliced leakage detection closure plate |
-
2014
- 2014-12-30 CN CN201420859401.8U patent/CN204373853U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677420A (en) * | 2016-08-02 | 2018-02-09 | 新特能源股份有限公司 | A kind of spliced leakage detection closure plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104568325A (en) | Method for vacuum leak detection of air-cooled coal-fired unit | |
| CN203323218U (en) | Boiler flue gas waste heat heating system | |
| CN204373853U (en) | For air cooling coal unit vacuum leakage detection segmentation closure plate | |
| CN202770284U (en) | Steam waste heat recovering device | |
| CN202520521U (en) | Heat-exchangeable air compressor | |
| CN103017569A (en) | Flue gas heating device | |
| CN204126853U (en) | Residual heat of air compressor reclaims unit waterway structure | |
| CN216845739U (en) | Indirect air cooling system anti-freezing device in winter participating in waste heat recovery | |
| CN213513854U (en) | Low-temperature economizer quick water discharge and online leakage detection isolation system | |
| CN204853538U (en) | Gyration air heater with adjustable bleed | |
| CN210979896U (en) | Boiler flue gas waste heat conversion system | |
| CN203869074U (en) | Device for recovering waste heat of gas boiler | |
| CN204438069U (en) | The low-lying level of exhaust heat stepped utilization is drawn gas indirect steam air heater system | |
| CN102588944A (en) | Low-temperature flue-gas heat recycling and utilization system | |
| CN105180202B (en) | One kind pumping controllable type rotary air preheater and its adjusting method | |
| CN207455155U (en) | drain pipe device | |
| CN202470027U (en) | Low-temperature flue gas heat recovery and utilization system | |
| CN204535449U (en) | A kind of thermal power plant Air-cooled Unit, water chiller cold junction intermodal system | |
| CN107191778A (en) | drain pipe device | |
| CN219953462U (en) | Optimize combined cycle unit vacuum system | |
| CN205152256U (en) | Converter end section flue high reliability vaporization cooling tedge | |
| CN204902617U (en) | Steam turbine condensing plant | |
| CN205048415U (en) | Novel ventilation roof beam cooling system | |
| CN210772276U (en) | Zero leakage system of flue butterfly valve | |
| CN218117866U (en) | 600 MW-level non-wet-cooling steam turbine generator unit backpressure reduction energy-saving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |