CN110542611A - Equipment pressure test adapter tube and pressure test method - Google Patents
Equipment pressure test adapter tube and pressure test method Download PDFInfo
- Publication number
- CN110542611A CN110542611A CN201810527444.9A CN201810527444A CN110542611A CN 110542611 A CN110542611 A CN 110542611A CN 201810527444 A CN201810527444 A CN 201810527444A CN 110542611 A CN110542611 A CN 110542611A
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- China
- Prior art keywords
- pressure test
- pressure
- end socket
- pressure testing
- equipment
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- 238000012360 testing method Methods 0.000 title claims abstract description 107
- 238000010998 test method Methods 0.000 title claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000003754 machining Methods 0.000 claims abstract 3
- 238000000034 method Methods 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
a pressure test connecting pipe and a pressure test method for equipment belong to the field of pressure test for manufacturing large pressure vessels and heat exchanger equipment and overcome the defects that pressure test allowance needs to be considered for ordering pressure test connecting pipes, seal head pressure test materials are thick, waste is large, and welding workload is large in the prior art. The pressure test connecting pipe is provided with the pressure test end socket connecting port which is smaller than the pressure test connecting pipe body in outer diameter and thickness in forming and machining, and is formed in one step. The pressure test method using the pressure test adapter tube comprises the following steps: the pressure test end socket is selected or manufactured, and the outer diameter and the thickness of the pressure test end socket are suitable for the connecting port of the pressure test end socket; performing heat treatment on the joint pipe body which is welded with the equipment shell and qualified in flaw detection; the pressure testing end socket is connected with the port and is welded with the pressure testing end socket; gas cutting pressure testing end sockets after the hydrostatic test is qualified; the boring machine is used for machining and removing the connecting port of the pressure testing seal head, so that the design size is met. The invention is suitable for pressure test of large pressure vessels, saves the material cost and welding cost of connecting pipes and end sockets, ensures the quality, and has simple and convenient operation, safety and reliability.
Description
Technical Field
the invention belongs to the field of large-scale pressure vessel and heat exchanger equipment manufacturing, and relates to equipment pressure testing.
background
the heat exchanger is one of the core devices except the reactor in oil refining, chemical engineering and new energy devices. In recent years, the investment of China in the construction of projects such as large-scale oil refining, large-scale coal chemical industry, large ethylene and the like is increased, and the scale of the projects is also increased. The pressure test is an indispensable important process in the manufacturing process thereof. In pressure testing, the operation of the prior art generally leaves 10-20 mm pressure testing allowance in the length direction of a pressure testing connecting pipe, and when equipment is subjected to pressure testing, a pressure testing end socket with the same diameter and thickness is selected according to the thickness of the connecting pipe and the thickness of an external pipeline connecting port. Therefore, the configured pressure test end sockets are thicker, and the cost of process materials is relatively increased; the welding workload is large, and the consumption of welding materials is large; therefore, the workload must be increased, and the labor cost is correspondingly increased; it is not economical.
Disclosure of Invention
The purpose of the invention is as follows: the defects that in the prior art, pressure test allowance needs to be considered for ordering the pressure test connecting pipe, the sealing head pressure test material is thick, waste is large, and welding workload is large are overcome.
The invention provides a pressure test connecting pipe of equipment, wherein a pressure test end socket connecting port 2 is arranged in the pressure test connecting pipe forming process, and a connecting pipe body 1, an outer pipeline connecting groove and the pressure test end socket connecting port 2 of the connecting pipe body are formed at one time and are integrated into a whole no matter forging or turning; the outer diameter and the thickness of the pressure test end socket connecting port 2 are smaller than those of the pressure test connecting pipe body 1, and the smaller the pressure test connecting pipe body is, the better the pressure test connecting pipe body is, on the premise of meeting the pressure test requirement.
the pressure test method using the pressure test adapter tube comprises the following steps:
Selecting or manufacturing a pressure test end enclosure 3, comprehensively considering the three aspects of the blank material of the equipment connecting pipe, the actual size of the pressure test end enclosure connecting port 2 and the hydraulic test pressure of the equipment to determine the size, the span and the thickness of the pressure test end enclosure, wherein the outer diameter and the thickness of the pressure test end enclosure are adaptive to the pressure test end enclosure connecting port 2;
connecting the connecting pipe body 1 with the equipment shell, welding and detecting the flaw to be qualified, and carrying out heat treatment on the whole equipment;
the pressure test end socket connecting port 2 is connected with the pressure test end socket 3 in a welding mode;
Carrying out hydrostatic test on the whole equipment after the flaw detection is qualified;
After the hydrostatic test is qualified, drawing a gas cutting line of the pressure test seal head from the side of the pressure test seal head 3, cutting off and cleaning slag according to the line, and paying attention to protect the adapter tube body from being damaged;
the boring machine processes and removes the pressure test end socket connecting port 2, so that the connecting pipe body 1 meets the design size; flaw detection is carried out on the machined and removed part, the requirements of equipment technical conditions are met, and the pressure test procedure is completed.
The invention abandons the method of the prior art that the pressure test allowance is considered for the material ordering of the pressure test connecting pipe, skillfully applies a new idea and a new structure, and has the advantages that:
1. the method can ensure that the groove at the opening of the connecting pipe is intact and the damage to the equipment body is small in the pressure test process of the equipment;
2. The structure reduces the wall thickness of the end socket and saves the material consumption of the end socket process;
3. The pressure test end socket is connected by using the material outside the connecting pipe body, so that the allowance in the height direction of the connecting pipe is not required, and the material cost of the connecting pipe is saved;
4. the corresponding welding workload is reduced, the welding materials are reduced, the time cost is shortened, and the time, the labor and the materials are saved.
5. the operation is simple, safe and reliable, and potential defects of the connecting pipe body caused by welding are avoided.
Drawings
FIG. 1 is a schematic view of a connection structure of a thick-wall large connecting pipe and a pressure test end socket;
the figure includes: 1 connecting pipe, 2 pressure test seal head connecting ports and 3 pressure test seal heads.
detailed description of the preferred embodiments
The invention is further described with reference to the accompanying drawings.
As shown in the figure, the pressure test adapter tube is provided, the pressure test end socket connecting port 2 is arranged in the pressure test adapter tube forming process, and the adapter tube body 1, the outer pipeline connecting groove and the pressure test end socket connecting port 2 are formed in one step no matter forging or turning, and the two are integrated; the outer diameter and the thickness of the pressure test end socket connecting port 2 are smaller than those of the pressure test connecting pipe body 1, and the smaller the pressure test connecting pipe body is, the better the pressure test connecting pipe body is, on the premise of meeting the pressure test requirement.
the pressure test method using the pressure test adapter tube comprises the following steps:
Selecting or manufacturing a pressure test end enclosure 3, comprehensively considering the three aspects of the blank material of the equipment connecting pipe, the actual size of the pressure test end enclosure connecting port 2 and the hydraulic test pressure of the equipment to determine the size, the span and the thickness of the pressure test end enclosure, wherein the outer diameter and the thickness of the pressure test end enclosure are adaptive to the pressure test end enclosure connecting port 2;
Connecting the connecting pipe body 1 with the equipment shell, welding and detecting the flaw to be qualified, and carrying out heat treatment on the whole equipment;
The pressure test end socket connecting port 2 is connected with the pressure test end socket 3 in a welding mode;
carrying out hydrostatic test on the whole equipment after the flaw detection is qualified;
After the hydrostatic test is qualified, drawing a gas cutting line of the pressure test seal head from the side of the pressure test seal head 3, cutting off and cleaning slag according to the line, and paying attention to protect the adapter tube body from being damaged;
the boring machine processes and removes the pressure test end socket connecting port 2, so that the connecting pipe body 1 meets the design size; flaw detection is carried out on the machined and removed part, the requirements of equipment technical conditions are met, and the pressure test procedure is completed.
The invention is suitable for pressure test of large pressure vessels, does not need to leave allowance in the height direction of the connecting pipe, saves the material cost and welding cost of the connecting pipe and the end socket, ensures the quality, and has simple and convenient operation, safety and reliability.
Claims (2)
1. The utility model provides an equipment pressure testing takeover, characterized by: the pressure test end socket connecting port is arranged in the pressure test connecting pipe forming process, and the connecting pipe body, the outer pipeline connecting groove and the pressure test end socket connecting port are formed in one step and are integrated in a forging and turning process; the pressure testing head connecting port has the advantages that the outer diameter and the thickness of the connecting port are smaller than those of the pressure testing connecting pipe body, and the smaller the connecting port is, the better the connecting port is, on the premise of meeting the pressure testing pressure requirement.
2. The pressure testing method for the equipment pressure testing adapter tube according to claim 1, which is characterized in that:
The pressure testing end socket is selected or manufactured, the size, the span and the thickness of the port of the pressure testing end socket are determined according to the blank of the equipment connecting pipe, the connecting port of the pressure testing end socket and the actual size and the hydraulic test pressure of the equipment in a comprehensive consideration mode, and the outer diameter and the thickness of the pressure testing end socket are suitable for the connecting port of the pressure testing end socket;
secondly, connecting and welding the joint pipe body with the equipment shell and performing flaw detection to be qualified, and performing heat treatment on the whole equipment;
The pressure testing end socket connecting port is connected with the pressure testing end socket through welding;
fourthly, performing hydraulic test on the whole equipment after flaw detection is qualified;
after the hydrostatic test is qualified, drawing a gas cutting line of the pressure testing end socket from the side of the pressure testing end socket, cutting off and cleaning slag according to the line, and paying attention to protect the adapter tube body from being damaged;
the boring machine is used for machining and removing a connecting port of the pressure test sealing head, so that the connecting pipe body conforms to the design size; flaw detection is carried out on the machined and removed part, the requirements of equipment technical conditions are met, and the pressure test procedure is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810527444.9A CN110542611A (en) | 2018-05-29 | 2018-05-29 | Equipment pressure test adapter tube and pressure test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810527444.9A CN110542611A (en) | 2018-05-29 | 2018-05-29 | Equipment pressure test adapter tube and pressure test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110542611A true CN110542611A (en) | 2019-12-06 |
Family
ID=68700826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810527444.9A Withdrawn CN110542611A (en) | 2018-05-29 | 2018-05-29 | Equipment pressure test adapter tube and pressure test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110542611A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230427A (en) * | 2020-03-24 | 2020-06-05 | 哈尔滨锅炉厂有限责任公司 | Method for manufacturing water pressure sealing cover of large-diameter connecting pipe ball gap of pressure-bearing equipment |
| CN114993846A (en) * | 2022-08-05 | 2022-09-02 | 山西阳煤化工机械（集团）有限公司 | Device for testing pressure of heat exchanger and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63298023A (en) * | 1987-05-29 | 1988-12-05 | Hitachi Ltd | Pressure testing method for pressure container |
| CN102155538A (en) * | 2011-03-14 | 2011-08-17 | 哈尔滨锅炉厂有限责任公司 | Reusable welded hydraulic cover of boiler and pressure vessel and manufacturing method of reusable welded hydraulic cover |
| CN102338684A (en) * | 2011-09-26 | 2012-02-01 | 张家港化工机械股份有限公司 | Connecting structure for pressure test of pressure test sealing head and nozzle of surfacing reinforcing pipe |
| CN208270337U (en) * | 2018-05-29 | 2018-12-21 | 兰州兰石重型装备股份有限公司 | A kind of equipment pressure testing adapter tube |
-
2018
- 2018-05-29 CN CN201810527444.9A patent/CN110542611A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63298023A (en) * | 1987-05-29 | 1988-12-05 | Hitachi Ltd | Pressure testing method for pressure container |
| CN102155538A (en) * | 2011-03-14 | 2011-08-17 | 哈尔滨锅炉厂有限责任公司 | Reusable welded hydraulic cover of boiler and pressure vessel and manufacturing method of reusable welded hydraulic cover |
| CN102338684A (en) * | 2011-09-26 | 2012-02-01 | 张家港化工机械股份有限公司 | Connecting structure for pressure test of pressure test sealing head and nozzle of surfacing reinforcing pipe |
| CN208270337U (en) * | 2018-05-29 | 2018-12-21 | 兰州兰石重型装备股份有限公司 | A kind of equipment pressure testing adapter tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230427A (en) * | 2020-03-24 | 2020-06-05 | 哈尔滨锅炉厂有限责任公司 | Method for manufacturing water pressure sealing cover of large-diameter connecting pipe ball gap of pressure-bearing equipment |
| CN114993846A (en) * | 2022-08-05 | 2022-09-02 | 山西阳煤化工机械（集团）有限公司 | Device for testing pressure of heat exchanger and using method thereof |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191206 |
|
| WW01 | Invention patent application withdrawn after publication |