CN210347105U - Pipe end joint for water pressure test of coiled pipe heat exchange module - Google Patents
Pipe end joint for water pressure test of coiled pipe heat exchange module Download PDFInfo
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- CN210347105U CN210347105U CN201921346553.7U CN201921346553U CN210347105U CN 210347105 U CN210347105 U CN 210347105U CN 201921346553 U CN201921346553 U CN 201921346553U CN 210347105 U CN210347105 U CN 210347105U
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 30
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 9
- 238000012423 maintenance Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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Abstract
The utility model discloses a pipe end joint for a hydrostatic test of a coiled pipe heat exchange module, which comprises a hollow central pipe, a pressure gauge is arranged on one side of the central tube, two locking nuts are connected on the central tube in a threaded manner, a flexible sleeve and two pushing and pressing shaft sleeves are sequentially and movably sleeved on the central tube between the two locking nuts, the locking positioning ring is characterized in that a locking positioning ring composed of a plurality of independent arc-shaped shaft tiles is arranged between the two pushing and pressing shaft sleeves, the outer wall of each arc-shaped shaft tile is provided with an expansion groove, each arc-shaped shaft tile is in a shape with thin two ends and thick middle, two ends of the locking positioning ring form a tapered channel which is convenient for pushing and pressing the shaft sleeves to push, when the locking nut is tightened, the two pushing and pressing shaft sleeves can be pushed into the locking positioning ring along the tapered channel on the same side, two ends of each arc-shaped shaft tile of the locking positioning ring are respectively outwards opened and tightly expanded with the inner wall of the pipe end, and the flexible sleeve is enabled to radially expand and. The utility model has the advantages of fixed effectual and the leakproofness is high.
Description
Technical Field
The utility model relates to an energy saving and emission reduction heat transfer device's hydrostatic test equipment technical field, concretely relates to pipe end connects for coiled pipe heat transfer module hydrostatic test.
Background
Energy is used as a material basis for survival and development of human society, is highly valued by all countries in the world, and is not exceptional in China, and particularly in the current new historical development period, energy conservation and emission reduction are inevitable choices for establishing a resource-saving and environment-friendly society for accelerating the pace of ecological civilization construction in China. Energy conservation and emission reduction are long-term strategic guidelines for economic and social development in China and are extremely urgent tasks. The waste heat recovery and energy consumption reduction have important practical significance for realizing energy conservation, emission reduction and environmental protection development strategy in China. Meanwhile, the utilization of waste heat plays an increasingly important role in the aspects of improving labor conditions, saving energy, increasing production, improving product quality, reducing production cost and the like, and some of the waste heat become an integral part in industrial production.
The boiler exhaust heat loss of the power station is one of the main heat losses in the thermal power plant, and the exhaust waste heat utilization system is adopted to reduce the exhaust temperature, so that the economy of the power plant can be greatly improved, and the boiler exhaust heat loss is one of the important ways for improving the heat efficiency of a unit. At present, a plurality of domestic power plants adopt a low-temperature economizer technology to reduce the exhaust gas temperature and improve the economy of the power plants. The heat exchange device assembled by a plurality of coiled pipe heat exchange modules is one of necessary devices of the low-temperature economizer technology, and the advantages and disadvantages of the performance of the coiled pipe heat exchange modules directly influence the electric dust removal efficiency and the effective service life of system equipment. The serpentine heat exchange module used at present generally comprises: the heat exchanger comprises two headers and a plurality of rows of snakelike heat exchange tubes positioned between the two headers, wherein one header is provided with a water inlet pipe and a water outlet pipe, and the other header is provided with an exhaust pipe and a water inlet pipe and a water outlet pipe.
The hydrostatic test is one of the most important processes in the manufacturing process of the coiled tube heat exchange module and is used for detecting whether the coiled tube heat exchange module has leakage, can bear pressure after operation, and has obvious defects of welding penetration, welding leakage, cracks and the like of welding seams.
When in a hydraulic test, a high-pressure hydraulic test pump is connected to an exhaust pipe of a header through a pipe end connector, a water inlet pipe of one header is connected with the high-pressure water pump through a water source connecting pipe with a check valve, then the check valve is opened and the high-pressure water pump is started, the high-pressure water pump injects a high-pressure water source into each header and each serpentine heat exchange pipe of the serpentine heat exchange module through the water source connecting pipe, after the serpentine heat exchange module is filled with water, the check valve is closed and the high-pressure water pump is stopped, a water inlet pipe and a water outlet pipe of the other header are sealed and blocked through a pipe end sealing head, then the water source connecting pipe is pulled out of the header and the water inlet pipe and the water outlet pipe of the header are sealed and blocked through the pipe end sealing head, then the high-pressure hydraulic test pump is used for pressurizing the serpentine heat exchange module.
However, the pipe end fittings currently used have the following disadvantages: (1) the fixing effect with the pipe end is poor, the pipe end is easy to fall off, and the use stability is poor; (2) the sealing property between the pipe end and the pipe is poor, so that the pressure maintaining effect is influenced; (3) the disassembly, the assembly and the maintenance are inconvenient; (4) the function is single, can't make operating personnel in time accurately know the inside real-time pressure of coiled pipe heat exchange module.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a coil pipe heat transfer module hydrostatic test with the fixed effectual and high leakproofness of pipe end connects with the pipe end.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the pipe end joint for the water pressure test of the coiled pipe heat exchange module comprises a hollow central pipe, one end of the central pipe is provided with a pressure gauge, the central pipe is in threaded connection with two locking nuts, a flexible sleeve and two pushing and pressing shaft sleeves are sequentially and movably sleeved on the central pipe between the two locking nuts, a locking and positioning ring is arranged between the two pushing and pressing shaft sleeves and consists of a plurality of independent arc-shaped shaft tiles, an expansion groove convenient for the two ends of each arc-shaped shaft tile to outwards open is arranged on the outer wall of each arc-shaped shaft tile along the circumferential direction, each arc-shaped shaft tile is arranged in a shape that the two ends are thin along the axial direction and the middle is thick, two ends of the locking and positioning ring form a conical channel convenient for the pushing and pressing shaft sleeves to push into the same side, when the locking nuts are tightened, the locking nuts can push the two pushing and pressing shaft sleeves into the locking and positioning ring along the conical channel, so that the two, and continuously tightening the locking nut to extrude the flexible sleeve, so that the flexible sleeve expands along the radial direction to seal the gap between the central tube and the inner wall of the tube end.
Further, the pipe end joint for the water pressure test of the coiled pipe heat exchange module comprises: the outer surface of the arc-shaped shaft tile is provided with a sawtooth groove.
Further, the pipe end joint for the water pressure test of the coiled pipe heat exchange module comprises: the center tube between the flexible sleeve and the corresponding side locking nut is sleeved with a support sleeve, and the center tube between the pushing shaft sleeve and the corresponding side locking nut is sleeved with a support sleeve and a tube sleeve.
Further, the pipe end joint for the water pressure test of the coiled pipe heat exchange module comprises: the pressure gauge is connected with the central tube through a bypass tube with a check valve.
Through the implementation of above-mentioned technical scheme, the utility model has the advantages that: (1) the fixing effect with the pipe end is good, and the use stability is high; (2) the sealing effect between the water pressure test tube and the tube end is good, and effective guarantee is provided for normal operation of a hydraulic test; (3) the locking positioning ring has the advantages of simple structure, convenience in operation, low use cost and convenience in disassembly and maintenance, and particularly, when the locking positioning ring is maintained, the locking positioning ring can be disassembled for replacement and maintenance without withdrawing parts such as a locking nut on the central tube, so that the maintenance process is simplified, and the maintenance efficiency is improved; (4) the function is various, accurately knows the inside real-time pressure of coiled pipe heat exchange module in real time through manometer 2.
Drawings
Fig. 1 is the structure schematic diagram of the pipe end joint for the water pressure test of the coiled pipe heat exchange module.
Fig. 2 is a schematic view of the usage state of fig. 1.
Fig. 3 is a schematic structural view of the center tube shown in fig. 1.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
As shown in fig. 1, 2 and 3, the tube end connector for the water pressure test of the serpentine tube heat exchange module comprises a hollow central tube 1, a pressure gauge 2 is arranged at one side of the central tube 1 and at a position close to the tube opening, the pressure gauge 2 is connected with the central tube 1 through a bypass tube 4 with a check valve 3, two locking nuts, namely a first locking nut 5 and a second locking nut 6, are in threaded connection with the central tube 1, two pushing and pressing shaft sleeves 7 and a flexible sleeve 8 made of rubber or other flexible materials are sequentially and movably sleeved on the central tube 1 between the first locking nut 5 and the second locking nut 6, a locking and positioning ring is arranged between the two pushing and pressing shaft sleeves 7 and composed of a plurality of independent arc-shaped shaft tiles 9, a contracting and expanding groove 10 convenient for two ends of each arc-shaped shaft tile to outwards open is arranged on the outer wall of each arc-shaped shaft tile 9 along the circumferential direction, each arc-shaped shaft tile 9 is arranged in a shape that two ends are thin along the axial direction and the middle is thick, so that a tapered channel which is convenient for pushing the pushing shaft sleeve 7 to push is formed at two ends of the locking positioning ring, when the first locking nut 5 or the second locking nut 6 is tightened, the two pushing shaft sleeves 7 can be pushed into the locking positioning ring along the tapered channel at the same side, two ends of each arc-shaped shaft tile 9 of the locking positioning ring are respectively outwards opened to be tightly expanded with the inner wall of the pipe end 15, the first locking nut 5 or the second locking nut 6 is continuously tightened to extrude the flexible sleeve 8, and the flexible sleeve 8 is enabled to expand along the radial direction to seal a gap between the central pipe 1 and the; in the embodiment, the outer surface of the arc-shaped shaft tile is provided with the sawtooth groove 11, and the friction force between the arc-shaped shaft tile 9 and the inner wall of the pipe end can be improved through the sawtooth groove 11, so that the arc-shaped shaft tile is more firmly expanded and fixed with the inner wall of the pipe end, and the use stability and the safety of the equipment are greatly improved; in the embodiment, a first support sleeve 12 is sleeved on the central tube 1 between the flexible sleeve 8 and the first locking nut 5 on the corresponding side, and a second support sleeve 13 and a tube sleeve 14 are sleeved on the central tube 1 between the pushing and pressing shaft sleeve 7 and the second locking nut 6 on the corresponding side, so that the position of the locking and positioning ring at the tube end can be conveniently adjusted, and the operation is more convenient;
when the flexible pipe heat exchange module is used, the first locking nut 5, the first support sleeve 12, the flexible sleeve 8, the locking positioning ring, the pushing and pressing shaft sleeve 7 and the second support sleeve 13 on the central pipe 1 extend into the pipe end 15 of the exhaust pipe together until the pressure gauge 2 is positioned at a position close to the pipe orifice of the exhaust pipe, the second locking nut 6 is tightened, the second locking nut 6 can push the two pushing and pressing shaft sleeves 7 into the locking and positioning ring along a same-side conical channel in the tightening process and simultaneously press the flexible sleeve 8, so that two ends of each arc-shaped shaft tile 9 of the locking and positioning ring are respectively outwards expanded to be tightly expanded with the inner wall of the pipe end 15, then the second locking nut 6 is continuously tightened to press the flexible sleeve 8, the flexible sleeve 8 is pressed to expand and seal a gap between the central pipe 1 and the inner wall of the pipe end 15 in the radial direction, then the pipe end of the central pipe 1 is connected with a high-pressure water pressure test pump, when, can accurately know the inside real-time pressure of coiled pipe heat exchange module in real time through manometer 2 to in time adjustment pressure provides effective guarantee for hydrostatic test's normal clear.
The utility model has the advantages that: (1) the fixing effect with the pipe end is good, and the use stability is high; (2) the sealing effect between the water pressure test tube and the tube end is good, and effective guarantee is provided for normal operation of a hydraulic test; (3) the locking positioning ring has the advantages of simple structure, convenience in operation, low use cost and convenience in disassembly and maintenance, and particularly, when the locking positioning ring is maintained, the locking positioning ring can be disassembled for replacement and maintenance without withdrawing parts such as a locking nut on the central tube, so that the maintenance process is simplified, and the maintenance efficiency is improved; (4) the function is various, accurately knows the inside real-time pressure of coiled pipe heat exchange module in real time through manometer 2.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications or equivalent changes made in accordance with the technical spirit of the present invention are also within the scope of the present invention.
Claims (4)
1. Pipe end connector for water pressure test of coiled pipe heat exchange module, its characterized in that: the pipe fitting comprises a hollow central pipe, a pressure gauge is arranged at one end of the central pipe, two locking nuts are in threaded connection with the central pipe, a flexible sleeve and two pushing and pressing shaft sleeves are sequentially and movably sleeved on the central pipe between the two locking nuts, a locking and positioning ring is arranged between the two pushing and pressing shaft sleeves and consists of a plurality of independent arc-shaped shaft tiles, an expansion groove convenient for the two ends of each arc-shaped shaft tile to outwards open is arranged on the outer wall of each arc-shaped shaft tile along the circumferential direction, each arc-shaped shaft tile is arranged in a shape that the two ends are thin along the axial direction and the middle is thick, a conical channel convenient for the pushing and pressing shaft sleeves to push in is formed at the two ends of the locking and positioning ring, when the locking nuts are tightened, the two pushing and positioning shaft sleeves can be pushed into the locking and positioning ring along the same-side conical channel, the two ends, and continuously tightening the locking nut to extrude the flexible sleeve, so that the flexible sleeve expands along the radial direction to seal the gap between the central tube and the inner wall of the tube end.
2. The tube end fitting for the hydrostatic test of the serpentine tube heat exchange module according to claim 1, wherein: the outer surface of the arc-shaped shaft tile is provided with a sawtooth groove.
3. The tube end fitting for the hydrostatic test of the serpentine tube heat exchange module according to claim 1, wherein: the center tube between the flexible sleeve and the corresponding side locking nut is sleeved with a support sleeve, and the center tube between the pushing shaft sleeve and the corresponding side locking nut is sleeved with a support sleeve and a tube sleeve.
4. The tube end fitting for the hydrostatic test of the serpentine tube heat exchange module according to claim 1, 2 or 3, wherein: the pressure gauge is connected with the central tube through a bypass tube with a check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921346553.7U CN210347105U (en) | 2019-08-19 | 2019-08-19 | Pipe end joint for water pressure test of coiled pipe heat exchange module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921346553.7U CN210347105U (en) | 2019-08-19 | 2019-08-19 | Pipe end joint for water pressure test of coiled pipe heat exchange module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210347105U true CN210347105U (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921346553.7U Expired - Fee Related CN210347105U (en) | 2019-08-19 | 2019-08-19 | Pipe end joint for water pressure test of coiled pipe heat exchange module |
Country Status (1)
| Country | Link |
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| CN (1) | CN210347105U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411731A (en) * | 2019-08-19 | 2019-11-05 | 江苏龙净节能科技有限公司 | A kind of coiled pipe heat exchange module water pressure test pipe end joint |
| CN116448324A (en) * | 2023-06-16 | 2023-07-18 | 艾瑞(成都)排放控制技术有限公司 | Pipe orifice plugging device for detecting air tightness of muffler |
-
2019
- 2019-08-19 CN CN201921346553.7U patent/CN210347105U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411731A (en) * | 2019-08-19 | 2019-11-05 | 江苏龙净节能科技有限公司 | A kind of coiled pipe heat exchange module water pressure test pipe end joint |
| CN116448324A (en) * | 2023-06-16 | 2023-07-18 | 艾瑞(成都)排放控制技术有限公司 | Pipe orifice plugging device for detecting air tightness of muffler |
| CN116448324B (en) * | 2023-06-16 | 2023-09-19 | 艾瑞(成都)排放控制技术有限公司 | Pipe orifice plugging device for detecting air tightness of muffler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Xiaolei Inventor after: Zhong Zhiliang Inventor after: Wei Shulin Inventor after: Wu Changsen Inventor after: Peng Wenxi Inventor after: Gu Jianqing Inventor before: Chen Xiaolei Inventor before: Zhong Zhiliang Inventor before: Wei Shulin Inventor before: Wu Changsen Inventor before: Peng Wenxi Inventor before: Gu Jianqing |
|
| 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: 20200417 |