CN112696554A - Large-diameter pipeline pressure test plugging blind plate and construction method thereof - Google Patents
Large-diameter pipeline pressure test plugging blind plate and construction method thereof Download PDFInfo
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- CN112696554A CN112696554A CN202011496080.6A CN202011496080A CN112696554A CN 112696554 A CN112696554 A CN 112696554A CN 202011496080 A CN202011496080 A CN 202011496080A CN 112696554 A CN112696554 A CN 112696554A
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 99
- 239000010959 steel Substances 0.000 claims abstract description 99
- 238000003466 welding Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
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- 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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- General Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
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- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a major diameter pipeline pressure testing shutoff blind plate, includes circular steel sheet, the steel sheet of putting more energy into, its characterized in that: the diameter of the circular steel plate is the same as the inner diameter of the pressure test pipeline; the stiffening steel plate is a steel grating plate erected by steel strips, the specification of the steel grating plate is that the longitudinal strip spacing is equal to the transverse strip spacing, the thickness of the steel strips is the same as that of the circular steel plate, the steel grating plate is fixedly welded on the circular steel plate, and the end head of the steel grating plate is welded to the inner side wall of the pressure test pipeline; wherein: the steel grating plate is fully paved on one side of the round steel plate. The large-diameter pipeline pressure test plugging blind plate and the construction method thereof have the advantages of simple structure, convenience in manufacturing, safe and reliable engineering quality, simple construction method, good sealing property, low cost and high effectiveness.
Description
Technical Field
The invention belongs to the field of construction of building pipelines, and particularly relates to a large-diameter pipeline pressure test plugging blind plate and a construction method thereof.
Background
In the construction process of the large-diameter pipeline, a pressure test is an important process, the end of the pipeline needs to be plugged before the pressure test, a flange is welded under general conditions, a finished blind plate is fastened by bolts, and a gasket is added between the flange and the blind plate. The construction in this mode is complicated, because the pipe diameter is great, if the flange is heated and is out of shape in welding process, then can lead to sealed not tight between flange and the blind flange, seriously influence the pressure test.
Therefore, the known large-diameter pipeline pressure test plugging method has various inconveniences and problems.
Disclosure of Invention
The invention aims to provide a safe and reliable large-diameter pipeline pressure test plugging blind plate.
The invention also aims to provide a safe and reliable construction method of the pressure test plugging blind plate of the large-diameter pipeline.
In order to achieve the purpose, the technical solution of the invention is as follows:
the utility model provides a major diameter pipeline pressure testing shutoff blind plate, includes circular steel sheet, the steel sheet of putting more energy into, its characterized in that:
the diameter of the circular steel plate is the same as the inner diameter of the pressure test pipeline;
the stiffening steel plate is a steel grating plate erected by steel strips, the specification of the steel grating plate is that the longitudinal strip spacing is equal to the transverse strip spacing, the thickness of the steel strips is the same as that of the circular steel plate, the steel grating plate is fixedly welded on the circular steel plate, and the end head of the steel grating plate is welded to the inner side wall of the pressure test pipeline;
wherein: the steel grating plate is fully paved on one side of the round steel plate.
The large-diameter pipeline pressure test plugging blind plate can be further realized by adopting the following technical measures.
According to the large-diameter pipeline pressure test plugging blind plate, the wall thickness of the circular steel plate is more than or equal to 1.5 times of that of the pipeline under pressure test.
According to the large-diameter pipeline pressure test plugging blind plate, the distance between the longitudinal bars of the steel grating plate is more than or equal to 250 mm.
According to the large-diameter pipeline pressure test plugging blind plate, the width of the steel plate strip is more than or equal to 50 mm.
A construction method of a large-diameter pipeline pressure test plugging blind plate is characterized by comprising the following steps:
a. the diameter of the pressure test pipeline is 810mm, the wall thickness is 10mm, and the diameter and the thickness of the round steel plate are respectively 800mm and 15mm through calculation;
b. cutting a round steel plate according to the calculated diameter and thickness;
c. setting four stiffening steel plates according to calculation, wherein the steel plate strips are 760mm x 50mm in size and 15mm in thickness and are arranged horizontally and longitudinally at a spacing of 250 mm;
d. welding a circular steel plate to the end part of the pipeline to be pressed, wherein the specific position is a position which is 60mm inward from the edge of the pipe orifice of the pipeline;
e. and then welding the stiffening steel plate to the outer side surface of the circular steel plate in a transverse and longitudinal mode, welding the ends of the stiffened steel plate to the side wall of the pipeline, and arranging the stiffening steel plate and the stiffened steel plate at equal intervals to finish the installation of the pressure test plugging blind plate.
The construction method of the large-diameter pipeline pressure test plugging blind plate can be further realized by adopting the following technical measures.
In the method, the width of the steel plate strip is more than or equal to 50 mm.
After the technical scheme is adopted, the large-diameter pipeline pressure test plugging blind plate and the construction method thereof have the following advantages:
1. the blind plate has simple structure and convenient manufacture;
2. the engineering quality is safe and reliable, the construction method is simple, and the sealing performance is good;
3. low cost and high effect.
Drawings
Fig. 1 is a schematic structural view of a pipeline pressure test plugging blind plate according to an embodiment of the invention.
In the figure: 1 round steel plate and 2 stiffening steel plates.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
The pressure test plugging blind plate for the large-diameter pipeline comprises a circular steel plate and a stiffening steel plate.
Referring to fig. 1, fig. 1 is a schematic structural view of a pipeline pressure test plugging blind plate according to an embodiment of the present invention. As shown in the figure, the diameter of the circular steel plate 1 is the same as the inner diameter of the pressure test pipeline; the stiffening steel plate 2 is a steel grating plate erected by steel strips, the specification of the steel grating plate is that the longitudinal strip spacing is equal to the transverse strip spacing, the thickness of the steel strips is the same as that of the circular steel plate, the steel grating plate is fixedly welded on the circular steel plate, and the end head of the steel grating plate is welded to the inner side wall of the pressure test pipeline; wherein: the steel grating plate is fully paved on one side of the round steel plate. The wall thickness of the circular steel plate is 1.5 times of that of the pressure test pipeline. The distance between the longitudinal strips and the transverse strips of the steel grating plate is 250 mm. The width of the steel plate strip is 50 mm.
Example 2
The invention discloses a method for manufacturing and installing a large-diameter pipeline pressure test plugging blind plate, which comprises the following steps:
2, cutting a circular steel plate according to the calculated diameter and thickness;
step 3, four stiffening steel plates 2 are set according to calculation, the size of the steel plate strip is 760mm x 50mm, the thickness of the steel plate strip is 15mm, the steel plate strip is arranged according to the transverse second and the longitudinal second, and the distance between the steel plate strip and the transverse second and the longitudinal second is 250 mm;
step 4, welding the circular steel plate 1 to the end part of the pipeline to be pressed, wherein the specific position is 60mm inward from the edge of the pipe orifice;
step 5, welding the stiffening steel plates 2 to the blind plate transversely and longitudinally, welding the end heads to the side wall of the pipeline, and arranging the stiffening steel plates at equal intervals;
and 6, completing the installation of the pressure test plugging blind plate.
The large-diameter pipeline pressure test plugging blind plate and the construction method thereof have the advantages of local material utilization, simple and convenient manufacture, flexible installation, good sealing effect, low cost and high effectiveness.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.
Claims (6)
1. The utility model provides a major diameter pipeline pressure testing shutoff blind plate, includes circular steel sheet, the steel sheet of putting more energy into, its characterized in that:
the diameter of the circular steel plate is the same as the inner diameter of the pressure test pipeline;
the stiffening steel plate is a steel grating plate erected by steel strips, the specification of the steel grating plate is that the longitudinal strip spacing is equal to the transverse strip spacing, the thickness of the steel strips is the same as that of the circular steel plate, the steel grating plate is fixedly welded on the circular steel plate, and the end head of the steel grating plate is welded to the inner side wall of the pressure test pipeline;
wherein: the steel grating plate is fully paved on one side of the round steel plate.
2. The plugging blind plate for pressure test of the large-diameter pipeline as claimed in claim 1, wherein the wall thickness of the pipeline of the circular steel plate is more than or equal to 1.5 times of that of the pipeline under pressure test.
3. The plugging blind plate for pressure test of large-diameter pipelines according to claim 1, wherein the distance between the longitudinal bars of the steel grating plate is more than or equal to 250 mm.
4. The blind plate for pressure test and plugging of large-diameter pipelines according to claim 1, wherein the width of the steel plate strip is more than or equal to 50 mm.
5. The construction method of the large-diameter pipeline pressure test plugging blind plate according to claim 1 is characterized by comprising the following steps:
a. the diameter of the pressure test pipeline is 810mm, the wall thickness is 10mm, and the diameter and the thickness of the round steel plate are respectively 800mm and 15mm through calculation;
b. cutting a round steel plate according to the calculated diameter and thickness;
c. setting four stiffening steel plates according to calculation, wherein the steel plate strips are 760mm x 50mm in size and 15mm in thickness and are arranged horizontally and longitudinally at a spacing of 250 mm;
d. welding a circular steel plate to the end part of the pipeline to be pressed, wherein the specific position is a position which is 60mm inward from the edge of the pipe orifice of the pipeline;
e. and then welding the stiffening steel plate to the outer side surface of the circular steel plate in a transverse and longitudinal mode, welding the ends of the stiffened steel plate to the side wall of the pipeline, and arranging the stiffening steel plate and the stiffened steel plate at equal intervals to finish the installation of the pressure test plugging blind plate.
6. The construction method of the large-diameter pipeline pressure test plugging blind plate as claimed in claim 5, wherein the width of the steel plate strip is more than or equal to 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011496080.6A CN112696554A (en) | 2020-12-17 | 2020-12-17 | Large-diameter pipeline pressure test plugging blind plate and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011496080.6A CN112696554A (en) | 2020-12-17 | 2020-12-17 | Large-diameter pipeline pressure test plugging blind plate and construction method thereof |
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| CN112696554A true CN112696554A (en) | 2021-04-23 |
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| CN202011496080.6A Pending CN112696554A (en) | 2020-12-17 | 2020-12-17 | Large-diameter pipeline pressure test plugging blind plate and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215142A (en) * | 2021-12-21 | 2022-03-22 | 深圳市市政工程总公司 | Construction method for plugging large-diameter water pressing pipeline under limited condition |
| CN114352837A (en) * | 2021-12-21 | 2022-04-15 | 深圳市市政工程总公司 | Large-diameter water pressing pipeline plugging structure under limited condition |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2619434A1 (en) * | 1987-08-10 | 1989-02-17 | Stein Industrie | Device for plugging a pipe and method for plugging with the aid of this device |
| CN101344004A (en) * | 2008-08-22 | 2009-01-14 | 陈定平 | Mounting method of deep well high pressure aeration reactor steel drum |
| CN202834564U (en) * | 2012-10-17 | 2013-03-27 | 中建三局第一建设工程有限责任公司 | Self-control reinforced pipeline blind plate |
| CN204127563U (en) * | 2014-10-29 | 2015-01-28 | 中国水利水电第五工程局有限公司 | The dull and stereotyped end cap of seal of tube Dual side reinforced suppressed by PCCP pipeline |
| CN106015824A (en) * | 2016-07-05 | 2016-10-12 | 长江勘测规划设计研究有限责任公司 | Hydrostatic test plugging device and method for prestressed concrete cylinder pipe |
| CN207064956U (en) * | 2017-06-18 | 2018-03-02 | 中国能源建设集团东北电力第一工程有限公司 | A kind of special end socket of power plant's heavy caliber circulating water pipeline water pressure test |
| CN208109596U (en) * | 2018-03-27 | 2018-11-16 | 无锡华毅管道有限公司 | PCCP pipeline pressure test tool pipe |
-
2020
- 2020-12-17 CN CN202011496080.6A patent/CN112696554A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2619434A1 (en) * | 1987-08-10 | 1989-02-17 | Stein Industrie | Device for plugging a pipe and method for plugging with the aid of this device |
| CN101344004A (en) * | 2008-08-22 | 2009-01-14 | 陈定平 | Mounting method of deep well high pressure aeration reactor steel drum |
| CN202834564U (en) * | 2012-10-17 | 2013-03-27 | 中建三局第一建设工程有限责任公司 | Self-control reinforced pipeline blind plate |
| CN204127563U (en) * | 2014-10-29 | 2015-01-28 | 中国水利水电第五工程局有限公司 | The dull and stereotyped end cap of seal of tube Dual side reinforced suppressed by PCCP pipeline |
| CN106015824A (en) * | 2016-07-05 | 2016-10-12 | 长江勘测规划设计研究有限责任公司 | Hydrostatic test plugging device and method for prestressed concrete cylinder pipe |
| CN207064956U (en) * | 2017-06-18 | 2018-03-02 | 中国能源建设集团东北电力第一工程有限公司 | A kind of special end socket of power plant's heavy caliber circulating water pipeline water pressure test |
| CN208109596U (en) * | 2018-03-27 | 2018-11-16 | 无锡华毅管道有限公司 | PCCP pipeline pressure test tool pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215142A (en) * | 2021-12-21 | 2022-03-22 | 深圳市市政工程总公司 | Construction method for plugging large-diameter water pressing pipeline under limited condition |
| CN114352837A (en) * | 2021-12-21 | 2022-04-15 | 深圳市市政工程总公司 | Large-diameter water pressing pipeline plugging structure under limited condition |
| CN114352837B (en) * | 2021-12-21 | 2023-08-18 | 深圳市市政工程总公司 | Large pipe diameter pressurized water pipeline plugging structure under limiting condition |
| CN114215142B (en) * | 2021-12-21 | 2024-04-05 | 深圳市政集团有限公司 | Plugging construction method for large-pipe-diameter pressurized water pipeline under limiting condition |
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Application publication date: 20210423 |
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| RJ01 | Rejection of invention patent application after publication |