CN112945467A - Pressure testing sealing tool and method for welding port of chemical equipment - Google Patents
Pressure testing sealing tool and method for welding port of chemical equipment Download PDFInfo
- Publication number
- CN112945467A CN112945467A CN202110268032.XA CN202110268032A CN112945467A CN 112945467 A CN112945467 A CN 112945467A CN 202110268032 A CN202110268032 A CN 202110268032A CN 112945467 A CN112945467 A CN 112945467A
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- welding
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- 238000007789 sealing Methods 0.000 title claims abstract description 80
- 238000003466 welding Methods 0.000 title claims abstract description 44
- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000126 substance Substances 0.000 title claims abstract description 21
- 210000004907 gland Anatomy 0.000 claims abstract description 49
- 238000004804 winding Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract 1
- 235000015278 beef Nutrition 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 229910001149 41xx steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/022—Test plugs for closing off the end of a pipe
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention relates to the field of pressure test of a welding port of chemical equipment, in particular to a pressure test sealing tool and a pressure test sealing method for the welding port of the chemical equipment; the tool comprises a cylinder body internal support piece, an internal fastening double-end stud, an external fastening nut, an internal sealing gland, an external fastening double-end stud, a flange, a pipe cap, an internal fastening nut, a winding pad, a protection cylinder and a cowhells sealing pad. The method for sealing the welding hole of the chemical equipment in the pressure test of the welding port of the chemical equipment is suitable for sealing the hydraulic test of the welding connection port. Avoid the pressure testing in-process to the damage of welding mouth tip, the in-process adopts the bolt-up, and convenient to use practices thrift welding mouth shutoff time, reduces equipment cost of manufacture, improves the whole preparation quality of equipment.
Description
Technical Field
The invention relates to the field of pressure test of a welding port of chemical equipment, in particular to a pressure test sealing tool and a pressure test sealing method for the welding port of the chemical equipment.
Background
When chemical equipment is designed, a connector which does not need to be disassembled, maintained and overhauled on site is designed to be a welding connector in the operation process, so that the sealing performance of the welding connector in the operation process is ensured, the welding connector is not provided with a flange, a water pressure test allowance is reserved at the end part of a connecting pipe in the equipment manufacturing process, a pressure test pipe cap is welded in the pressure test process, the pressure test pipe cap and the pressure test allowance are cut off after the pressure test is finished, a pipe end slope is processed, if a CrMo steel connecting pipe is adopted, the pressure test pipe cap needs to be preheated before being welded, stress eliminating heat treatment is needed after the pressure test pipe cap is welded, the pipe cap for the pressure test can be used for 1-2 times, resources are wasted, and the working time is wasted.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides the pressure testing sealing tool for the welding port of the chemical equipment, avoids the damage to the end part of the welding port in the pressure testing process of the welding port of the equipment, utilizes components such as a flange, a pipe cap and the like which can be repeatedly utilized to carry out a hydraulic pressure test, adopts bolts for fastening in the process, is convenient to use, saves the sealing time of the welding port, reduces the manufacturing cost of the equipment, and improves the overall manufacturing quality of the equipment.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a sealed frock of chemical industry equipment weld opening pressure testing, includes inside support piece of barrel, inside seal gland, flange and pipe cap, be connected through a plurality of inside fastening stud and inside fastening nut between inside support piece of barrel and the inside seal gland, the flange is connected through outside fastening stud and outside fastening nut with the edge of inside seal gland, the pipe cap welding is in the upper end of flange, one side rigid coupling that inside seal gland is close to inside support piece of barrel has a protection section of thick bamboo, be provided with the cowhells in the protection section of thick bamboo and seal up the pad, the flange is equipped with the winding pad with inside seal gland's junction.
In addition, the invention also provides a pressure test sealing method for the welding port of the chemical equipment, which is carried out by adopting the sealing tool and comprises the following steps:
1) manufacturing a part of a pressure test tool for a welding port of chemical equipment, machining bolt holes on an internal sealing gland and a beef tendon cushion and machining a balance hole in the center, wherein the size of a sealing surface and the distribution of bolt connecting holes, the diameter of a circle and the size of the hole are the same as those of a standard flange, welding a protective cylinder at the lower end of the internal sealing gland, and arranging the same bolt holes at the positions of a supporting piece inside a cylinder body, which correspond to the internal sealing gland;
2) the method comprises the following steps of putting a cylinder internal support piece into an equipment cylinder, penetrating an internal fastening stud into the cylinder internal support piece inside the cylinder, sleeving a cowhells sealing gasket and an internal sealing gland on the end part of a welding port outside the cylinder, adjusting the positions of the internal sealing gland and the cylinder internal support piece in an assembly state without pre-tightening force, and after the position adjustment is finished, uniformly fastening an internal stud fastener to enable the cowhells sealing gasket to be in close contact with the internal sealing gland and the end part of the welding port so as to realize the end part sealing of the welding port;
3) after the end part is sealed, fastening a flange-pipe cap assembly at the outer side of the internal sealing gland, and sealing by using a winding gasket so as to realize the sealing of the internal sealing gland and the flange;
4) and finally, plugging the manhole, performing a hydraulic test according to a design blueprint and process requirements, dismantling one by one and clearly marking after the test is qualified, and facilitating subsequent reutilization.
Further, in the step 1), the flange, the pipe cap, the internal fastening stud, the internal fastening nut, the external fastening stud, the external fastening nut and the winding pad are standard products, and the internal sealing gland and the cowhells sealing pad are processed into 2-4 bolt holes.
Compared with the prior art, the invention has the following beneficial effects:
the invention avoids the damage to the end part of the welding port in the pressure test process, utilizes the reusable components such as the flange and the pipe cap to carry out the hydraulic test, adopts the bolt fastening in the process, is convenient to use, saves the sealing time of the welding port, reduces the manufacturing cost of the equipment and improves the integral manufacturing quality of the equipment.
Drawings
FIG. 1 is a schematic structural view of a sealing tool for pressure test of a welding port of chemical equipment.
The figures are labeled as follows:
1-cylinder internal support, 2-internal fastening stud, 3-external fastening nut, 4-internal sealing gland, 5-external fastening stud, 6-flange, 7-pipe cap, 8-internal fastening nut, 9-winding pad, 10-protection cylinder, 11-tendon sealing pad, 12-equipment welding connection pipe orifice and 13-equipment cylinder.
Detailed Description
The present invention is further illustrated by the following specific examples.
Examples
As shown in fig. 1, a chemical industry equipment welding mouth pressure testing seals frock, including the inside support piece 1 of barrel, inside gland 4, flange 6 and pipe cap 7, be connected through a plurality of inside fastening stud 2 and inside fastening nut 8 between the inside support piece 1 of barrel and the inside gland 4, flange 6 is connected through outside fastening stud 5 and outside fastening nut 3 with the edge of inside gland 4, the pipe cap 7 welds in the upper end of flange 6, one side rigid coupling that inside gland 4 is close to the inside support piece 1 of barrel has a protection section of thick bamboo 10, be provided with the sealed 11 of cowhells in the protection section of thick bamboo 10, flange 6 is equipped with winding pad 9 with the junction of inside gland 4.
The inside of the end part of the welded junction is sealed by adopting a cylinder inner supporting piece 1 and an inner sealing gland 4 to fix an inner fastening stud 2 to compress a cowhells sealing gasket 11, so that the end part of the welded junction is sealed; the inner sealing gland 4 and the flange 5 are sealed by adopting a flange-pipe cap assembly and a supporting disc to compress a winding pad through an external fastening stud, and mainly seal a central balance hole of the inner sealing gland 4 and an inner stud to penetrate through a stud gap of the inner sealing gland 4.
The embodiment specifically operates as a pressure test sealing method for a welding port of chemical equipment, and comprises the following steps:
1) a pressure test tool for manufacturing a welding port of chemical equipment comprises a cylinder body internal supporting piece 1, an internal fastening double-end stud 2, an external fastening nut 3, an internal sealing gland 4, an external fastening double-end stud 5, a flange 6, a pipe cap 7, an internal fastening nut 8, a winding pad 9, a protection cylinder 10 and a cowhells sealing pad 11, wherein the flange 6, the pipe cap 7, the internal fastening stud 2, the internal fastening nut 3, the external fastening stud 5, the external fastening nut 3 and the winding pad 9 adopt standard products, the internal sealing gland 4 and the beef tendon pad are processed with 2-4 bolt holes and a central processing balance hole, the size of a sealing surface and the diameter and the hole size of a bolt connecting hole distribution circle are the same as those of the standard flange, and welding a protection cylinder 10 at the lower end of the internal sealing gland 4, and 2-4 bolt holes with the same relative positions of the cylinder internal support part 1 and the internal sealing gland 4.
2) The method comprises the following steps of putting a cylinder internal support piece 1 into an equipment cylinder 13, penetrating a connecting internal fastening stud 2 into the cylinder internal support piece 1, sleeving a cowhells sealing gasket 11 and an internal sealing gland 4 at the end part of a welding port outside the cylinder, adjusting the positions of the internal sealing gland 4 and the cylinder internal support piece 1 in a loading state without pre-tightening force, and after the position adjustment is finished, uniformly fastening the internal stud 2 fastener to enable the cowhells sealing gasket 11 to be in close contact with the internal sealing gland 4 and the end part of the welding port so as to seal the end part of the welding port;
3) after the end part is sealed, because the size of a sealing surface on the upper surface of the inner sealing gland, the diameter of a peripheral bolt connecting hole distribution circle and the hole size are the same as those of a standard flange, a flange-pipe cap assembly is fastened on the outer side of the sealing gland, and the inner sealing gland 4 and the flange are sealed by using a winding pad 9;
4) and finally, plugging the manhole, performing a hydraulic test according to a design blueprint and process requirements, dismantling one by one and clearly marking after the test is qualified, and facilitating subsequent reutilization.
Claims (3)
1. A sealing tool for pressure test of a welding port of chemical equipment is characterized by comprising a cylinder inner supporting piece (1), an inner sealing gland (4), a flange (6) and a pipe cap (7), the cylinder inner supporting piece (1) is connected with the inner sealing gland (4) through a plurality of inner fastening double-end studs (2) and inner fastening nuts (8), the flange (6) is connected with the edge of the inner sealing gland (4) through an outer fastening stud (5) and an outer fastening nut (3), the pipe cap (7) is welded at the upper end of the flange (6), one side of the internal sealing gland (4) close to the internal support piece (1) of the cylinder body is fixedly connected with a protective cylinder (10), be provided with the sealed pad of cowhells (11) in protection section of thick bamboo (10), flange (6) and inside gland (4) junction are equipped with winding pad (9).
2. A sealing method for a pressure test of a welding port of chemical equipment is carried out by adopting the sealing tool of claim 1, and is characterized by comprising the following steps:
manufacturing a part of a pressure test tool for a welding port of chemical equipment, machining bolt holes and central machining balance holes on an internal sealing gland (4) and a cowhells pad (11), wherein the size of a sealing surface and the distribution of bolt connecting holes, the diameter of a circle and the size of a hole are the same as those of a standard flange, welding a protective cylinder (10) at the lower end of the internal sealing gland (4), and arranging the same bolt holes at the corresponding positions of an internal supporting piece (1) of a cylinder body and the internal sealing gland (4);
the method comprises the following steps of putting a cylinder internal support piece (1) into an equipment cylinder, penetrating an internal fastening stud (2) into the cylinder internal support piece (1) in the cylinder, sleeving a cowhells sealing gasket (11) and an internal sealing gland (4) at the end part of a welding port outside the cylinder, adjusting the positions of the internal sealing gland (4) and the cylinder internal support piece (1) in a loading state without pretightening force, and after the position is adjusted, uniformly fastening the internal stud fastener to enable the cowhells sealing gasket (11) to be in close contact with the internal sealing gland (4) and the end part of the welding port to realize the end part sealing of the welding port;
after the end part is sealed, fastening a flange-pipe cap assembly at the outer side of the inner sealing gland (4), and sealing by using a winding gasket (9) so as to realize the sealing of the inner sealing gland (4) and the flange (6);
and finally, plugging the manhole, performing a hydraulic test according to a design blueprint and process requirements, dismantling one by one and clearly marking after the test is qualified, and facilitating subsequent reutilization.
3. The pressure test sealing method for the welding port of the chemical equipment as claimed in claim 2, wherein in the step 1), the flange (6), the pipe cap (7), the internal fastening stud (2), the internal fastening nut (8), the external fastening stud (5), the external fastening nut (3) and the winding pad (9) are standard products, and the internal sealing gland (4) and the cowhells sealing pad (11) are provided with 2-4 bolt holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110268032.XA CN112945467A (en) | 2021-03-11 | 2021-03-11 | Pressure testing sealing tool and method for welding port of chemical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110268032.XA CN112945467A (en) | 2021-03-11 | 2021-03-11 | Pressure testing sealing tool and method for welding port of chemical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112945467A true CN112945467A (en) | 2021-06-11 |
Family
ID=76228999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110268032.XA Pending CN112945467A (en) | 2021-03-11 | 2021-03-11 | Pressure testing sealing tool and method for welding port of chemical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112945467A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202141632U (en) * | 2011-05-31 | 2012-02-08 | 天津二十冶建设有限公司 | Connecting device for pressuring of middle or low pressure plain-end steel tube |
| CN203718272U (en) * | 2013-12-27 | 2014-07-16 | 天津华能能源设备有限公司 | Barrel connecting pipe pressure test plugging device |
| CN214893860U (en) * | 2021-03-11 | 2021-11-26 | 山西阳煤化工机械（集团）有限公司 | Sealing tool for pressure test of welding port of chemical equipment |
-
2021
- 2021-03-11 CN CN202110268032.XA patent/CN112945467A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202141632U (en) * | 2011-05-31 | 2012-02-08 | 天津二十冶建设有限公司 | Connecting device for pressuring of middle or low pressure plain-end steel tube |
| CN203718272U (en) * | 2013-12-27 | 2014-07-16 | 天津华能能源设备有限公司 | Barrel connecting pipe pressure test plugging device |
| CN214893860U (en) * | 2021-03-11 | 2021-11-26 | 山西阳煤化工机械（集团）有限公司 | Sealing tool for pressure test of welding port of chemical equipment |
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