CN106271151B - The water supply line construction forming method for suppressing plug - Google Patents
The water supply line construction forming method for suppressing plug Download PDFInfo
- Publication number
- CN106271151B CN106271151B CN201610735623.2A CN201610735623A CN106271151B CN 106271151 B CN106271151 B CN 106271151B CN 201610735623 A CN201610735623 A CN 201610735623A CN 106271151 B CN106271151 B CN 106271151B
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- end plate
- pipe fitting
- welding
- plug
- forming method
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000003466 welding Methods 0.000 claims abstract description 57
- 230000000903 blocking effect Effects 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 229910001141 Ductile iron Inorganic materials 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims abstract description 10
- 239000003566 sealing material Substances 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 239000004568 cement Substances 0.000 claims abstract description 7
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000007494 plate polishing Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 10
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 239000004848 polyfunctional curative Substances 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Revetment (AREA)
- Pipe Accessories (AREA)
Abstract
Water supply line construction is suppressed plug and mainly by closure pipe fitting and forms sealed connected discoid end plate with the one end for blocking pipe fitting and constitute, the molding construction step for suppressing plug is with the forming method of plug is suppressed：S1 selections are simultaneously pre-processed in advance：Blocking pipe fitting uses ductile iron pipe, length to be more than 80cm；End plate uses mild steel steel plate, thickness to take 3cm~4cm；The welding ends for blocking pipe fitting is polished into double V-groove, and groove length is 2cm~3cm, is cleaned out around groove, and the cement layer polishing that closure pipe fitting is located at welding ends chisels out 5cm~8cm, and it is bright to polish；End plate polishing is clean；S2 is welded to blocking pipe fitting with end plate；S3 coats waterproof and sealing material to the welding position for blocking pipe fitting and end plate, and hardening forms waterproof sealing layer.There is simple in structure, at low cost, preferable leakproofness by the plug of suppressing that this forming method makes, therefore ensure that pipeline is suppressed and be smoothed out.
Description
Technical field
The invention belongs to water supply line technical field of construction, more particularly to the water supply line construction molding side for suppressing plug
Method.
Background technology
During water pipeline laying construction, it is a necessary working procedure to pipeline suppress, for pipeline compared with
Long and more valve chamber water pipeline construction work can significantly drop if carrying out when suppressing of section one by one in usual way
The construction progress of low water pipeline.Progress is suppressed to ensure, it is contemplated that while multiple line sections are suppressed, while can conserve water,
It improves and beats the utilization rate of hydraulic water, completion suppresses pipeline storage and pipe string is descended to suppress with water, compares conventional tube in this way, need to just be equipped with
Line construction more suppresses plug.And in outlying construction environment, especially some poor areas, it will usually need
Suppress the case where plug cannot meet the needs, to ensure the smooth construction of water pipeline, using existing or be easy to buy
Plug is suppressed in piping material, steel plate materials and tube material self-control, it is homemade suppress plug requirement it is simple in structure, it is at low cost and
In pipeline suppresses work progress, when hydraulic pressure, which reaches, suppresses upper limit of pressure value, good leakproofness should be had by suppressing plug.
Invention content
The present invention provides a kind of construction of water supply line with suppressing plug to solve technical problem present in known technology
Forming method, suppress simple, at low cost, the online feelings suppressed pressure and reach the upper limit of stopper structure by what the forming method made
Under condition, and there is preferable leakproofness, is smoothed out with ensureing that pipeline is suppressed.
The present invention is adopted the technical scheme that solve technical problem present in known technology：
Water supply line construction is with suppressing the forming method of plug, which is characterized in that suppress plug mainly by with pipeline energy shape
The sealed discoid end plate composition being fixedly connected is formed at the closure pipe fitting of inserting cooperation and with the one end for blocking pipe fitting, is beaten
Pressure plug molding construction step be：
S1 selections are simultaneously pre-processed in advance：
Pipe fitting is blocked using ductile iron pipe with water pipeline material identical, ductile iron pipe by outer layer spheroidal graphite cast-iron layer and
Internal layer cement layer is constituted, and the length for blocking pipe fitting is more than 80cm；End plate uses mild steel steel plate, the thickness of end plate take 3cm~
4cm is processed into the discoid tip plate configurations of setting by low carbon steel plate, and processes construction in the setting top position of end plate and use
Lifting hole(eyelet) structure；The welding ends for blocking pipe fitting is polished into double V-groove, and groove length is 2cm~3cm, is cleaned out around groove,
The cement layer polishing that closure pipe fitting is located at welding ends chisels out 5cm~8cm, and it is bright to polish；End plate polishing is clean；
S2 is welded to blocking pipe fitting with end plate：
Using cold welding method, it is not added with heat-sealing plugging part, heats welding rod, welding rod uses common low carbon steel electrode；First closure is managed
The outer wall of part setting groove along the circumferential direction carries out spot welding with end plate, and after spot welding is solid, the unified weldering of multilayer is carried out using high current
It connects, every layer has been welded and need to have been cleaned out, then each to be laminated last layer welding, and weld crack is made successively to reduce；Then envelope
The inner wall of plugging part setting groove is welded with end plate, the outer wall and end plate of welding manner and above-mentioned closure pipe fitting setting groove
Welding manner it is identical, be first spot welding, then carry out that multilayer is unified to weld again；
S3 coats waterproof and sealing material to the welding position for blocking pipe fitting and end plate, and hardening forms waterproof sealing layer.
Preferably：When carrying out spot weld operation twice in step 2, spot welded joint length is every section of 1cm, adjacent two sections of spot welding weldering
The distance between seam is 10cm~15cm.
Preferably：The outer wall and end plate for blocking pipe fitting setting groove carry out five layers of welding altogether；Block pipe fitting setting groove
Inner wall carries out four layers of welding altogether with end plate.
Preferably：Waterproof and sealing material select concrete surface waterproof epoxy paint, wherein the agent of epoxy resin basis with
Epoxy resin hardener amount ratio is 1:2.
Preferably：The plug of suppressing further includes the water injecting pipeline being fixed on end plate, the note on water injecting pipeline
Water control valve, gas exhaust piping and the gas exhausting valve on gas exhaust piping, the molding construction step for suppressing plug is also
Including：
S4 beats water injecting pipeline mounting hole on end plate close to the position of bottom, and exhaust is played in the position close to top on end plate
Pipeline mounting hole welds water injecting pipeline in water injecting pipeline position of mounting hole, and water injecting pipeline is selected PN16 or more seamless steel pipes, arranged
Air pipe position of mounting hole weld gas exhaust piping, gas exhaust piping select PN16 or more seamless steel pipes, and water injecting pipeline it is separate with
Water filling control valve is installed in one end of end plate welding, in the separate one end installation exhaust control with end plate welding of gas exhaust piping
Valve.
Preferably：The diameter of water injecting pipeline mounting hole takes 3 inches, and water injecting pipeline selects 3 inches of seamless steel pipe；Exhaust pipe
The diameter of road mounting hole takes 1 inch, and gas exhaust piping selects 1 inch of seamless steel pipe.
The invention has the advantages and positive effects that：
This forming method, by being welded with matching part inside and outside end plate to blocking pipe fitting, then in inner and outer welding portion
Position re-coating waterproof and sealing material, forms waterproof sealing layer, in this way, plug is suppressed made of making has higher anti-pressure ability,
In the case of suppressing pressure online and reaching the upper limit, the leakproofness for suppressing plug ensure that.It is made by this forming method to make
Suppress plug, material source is convenient and cost is relatively low, and manufacturing process is simple, therefore make to suppress plug cost relatively low, separately
Outside, structure is also fairly simple.
Description of the drawings
Fig. 1 is the structural schematic diagram that the present invention suppresses plug；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is partial enlarged view at the A of Fig. 1.
In figure：1, pipe fitting is blocked；2, end plate；2-1, lifting hole(eyelet) structure；3, water injecting pipeline；4, Fill control valves；5, exhaust pipe
Road；6, gas exhausting valve.
Specific implementation mode
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and coordinate attached drawing
Detailed description are as follows：
Please refer to Fig.1-3, the water supply line construction forming method for suppressing plug, suppress plug mainly by with pipeline energy shape
The sealed discoid composition of end plate 2 being fixedly connected is formed at the closure pipe fitting 1 of inserting cooperation and with the one end for blocking pipe fitting,
The molding construction step for suppressing plug is：
S1 selections are simultaneously pre-processed in advance：
Pipe fitting is blocked using ductile iron pipe with water pipeline material identical, ductile iron pipe by outer layer spheroidal graphite cast-iron layer and
Internal layer cement layer is constituted, specifically, the diameter of selected nodular cast iron pipe needs the reality according to water pipe pipeline to be suppressed
Diameter determines that the length for blocking pipe fitting is more than 80cm, can guarantee deflection when subsequently welding in allowed limits in this way.
End plate uses mild steel steel plate, the thickness of end plate to take 3cm~4cm, and the specific thickness of end plate can be according to the practical application feelings of plug
Condition determines, the discoid tip plate configurations of setting is processed by low carbon steel plate, and process in the setting top position of end plate
Working lifting hole(eyelet) structure 2-1.The welding ends for blocking pipe fitting is polished into double V-groove, and groove length is 2cm~3cm, around groove
It cleans out, the cement layer polishing that closure pipe fitting is located at welding ends chisels out 5cm~8cm, and it is bright to polish.End plate polishing is clean,
Spy is than being the one side with closure pipe fitting welding.
S2 is welded to blocking pipe fitting with end plate：
Using cold welding method, it is not added with heat-sealing plugging part, heats welding rod, welding rod uses common low carbon steel electrode.First closure is managed
The outer wall of part setting groove along the circumferential direction carries out spot welding with end plate, and after spot welding is solid, the unified weldering of multilayer is carried out using high current
It connects, every layer has been welded and need to have been cleaned out, then each to be laminated last layer welding, and weld crack is made successively to reduce；Then envelope
The inner wall of plugging part setting groove is welded with end plate, the outer wall and end plate of welding manner and above-mentioned closure pipe fitting setting groove
Welding manner it is identical, be first spot welding, then carry out that multilayer is unified to weld again.
S3 coats waterproof and sealing material to the welding position for blocking pipe fitting and end plate, and hardening forms waterproof sealing layer.Due to
After the completion of welding, although weld strength can reach requirement, microcrack is inevitable, to avoid suppressing in water pipe pipeline
In the process, it blocks pipe fitting to seep water with end plate welding position, is provided with above-mentioned waterproof sealing layer, has reached preferable sealing
Effect also ensures that water pipe pipeline suppressed is normally carried out.
When carrying out spot weld operation twice in above-mentioned forming method, in step 2, spot welded joint length is both preferably every section of 1cm,
The distance between two adjacent two sections of spot welded joints are both preferably 10cm~15cm.
In above-mentioned forming method, the outer wall and end plate that block pipe fitting setting groove preferably carry out five layers of welding altogether；Block pipe
The inner wall of groove is arranged in part and end plate preferably carries out four layers of welding altogether.
In above-mentioned forming method：Waterproof and sealing material selects concrete surface waterproof epoxy paint (NITOMORTAR
FC), for example, the concrete surface waterproof epoxy paint of FOSROC companies production, this material is by the agent of epoxy resin basis
(NITOMORTAR FC BASE) is used in mixed way, epoxy resin with epoxy resin hardener (NITOMORTAR FC HARDENER)
The amount ratio of bodying agent and epoxy resin hardener is 1:2.Using above-mentioned consumption proportion, the firm time of material is shorter, leads to
Hardening often can be realized after 1 day half, and hardening strength can reach requirement, that is, meet water pipe pipeline suppresses intensity need
It wants.
In above-mentioned construction method, the plug of suppressing further includes the water injecting pipeline 3 being fixed on end plate, is mounted on water injection pipe
Fill control valves 4, gas exhaust piping 5 and the gas exhausting valve 6 on gas exhaust piping of road, the wherein effect of water injecting pipeline
It is：When suppressing, is injected into water-supply-pipe and beat hydraulic water；The effect of gas exhaust piping is：In the water filling into water-supply-pipe, discharge pipe
Gas in road connects with the pipe of pressure pump when suppressing in addition after the completion of water filling and gives pipeline water filling, make pipeline
Pressure, which progressivelyes reach, checks and accepts pressure 16.5bar；The molding construction step for suppressing plug further includes：
S4 beats water injecting pipeline mounting hole on end plate close to the position of bottom, and exhaust is played in the position close to top on end plate
Pipeline mounting hole welds water injecting pipeline in water injecting pipeline position of mounting hole, and water injecting pipeline is selected PN16 or more seamless steel pipes, that is, held
Pressure energy power welds gas exhaust piping, gas exhaust piping selects PN16 in the seamless steel pipe of 16bar or more in gas exhaust piping position of mounting hole
The above seamless steel pipe, and water filling control valve is installed in water injecting pipeline separate one end with end plate welding, in exhaust pipe great distance
Exhaust control valve is installed from the one end welded with end plate.
In above-mentioned construction method：The diameter of water injecting pipeline mounting hole preferably takes 3 inches, and water injecting pipeline selects 3 inches of nothing
Stitch steel pipe；The diameter of gas exhaust piping mounting hole preferably takes 1 inch, and gas exhaust piping selects 1 inch of seamless steel pipe.
Example preferably is applied the foregoing is merely the present invention, practical range not for the purpose of limiting the invention.That is Fan Yibenfa
The equivalent changes and modifications that the content of bright claim is done, for example, waterproof and sealing material is using in Other Engineering construction
Frequently with the material etc. that can reach waterproof sealing effect, each fall within the present invention technical scope.
Claims (6)
1. the water supply line construction forming method for suppressing plug, which is characterized in that suppress plug mainly by that can be formed with pipeline
It inserts the closure pipe fitting of cooperation and forms the sealed discoid end plate being fixedly connected with the one end for blocking pipe fitting and constitute, suppress
The molding construction step of plug is：
S1 selections are simultaneously pre-processed in advance：
Pipe fitting is blocked using the ductile iron pipe with water pipeline material identical, ductile iron pipe is by outer layer spheroidal graphite cast-iron layer and internal layer
Cement layer is constituted, and the length for blocking pipe fitting is more than 80cm；End plate uses mild steel steel plate, the thickness of end plate to take 3cm~4cm, by
Low carbon steel plate is processed into the discoid tip plate configurations of setting, and processes working lifting hole(eyelet) in the setting top position of end plate
Structure；The welding ends for blocking pipe fitting is polished into double V-groove, and groove length is 2cm~3cm, is cleaned out around groove, blocks pipe
The cement layer polishing that part is located at welding ends chisels out 5cm~8cm, and it is bright to polish；End plate polishing is clean；
S2 is welded to blocking pipe fitting with end plate：
Using cold welding method, it is not added with heat-sealing plugging part, heats welding rod, welding rod uses common low carbon steel electrode；First closure pipe fitting is set
The outer wall and end plate for setting groove along the circumferential direction carry out spot welding, after spot welding is solid, carry out the unified welding of multilayer using high current, often
Layer has been welded and need to have been cleaned out, then each to be laminated last layer welding, and weld crack is made successively to reduce；Then closure pipe fitting
The inner wall and end plate that groove is arranged are welded, the welding of welding manner and the outer wall and end plate of above-mentioned closure pipe fitting setting groove
Mode is identical, is first spot welding, then carries out the unified welding of multilayer again；
S3 coats waterproof and sealing material to the welding position for blocking pipe fitting and end plate, and hardening forms waterproof sealing layer.
2. the water supply line construction forming method for suppressing plug according to claim 1, it is characterised in that：In step 2
Carry out twice spot weld operation when, spot welded joint length be every section of 1cm, the distance between adjacent two sections of spot welded joints be 10cm~
15cm。
3. the water supply line construction forming method for suppressing plug according to claim 1, it is characterised in that：Block pipe fitting
The outer wall of groove is set and end plate carries out five layers of welding altogether；The inner wall and end plate for blocking pipe fitting setting groove carry out four layers of weldering altogether
It connects.
4. the water supply line construction forming method for suppressing plug according to claim 1, it is characterised in that：Waterproof sealing
Material selection concrete surface waterproof epoxy paint, the wherein agent of epoxy resin basis are 1 with epoxy resin hardener amount ratio:
2。
5. the water supply line construction forming method for suppressing plug according to claim 1, it is characterised in that：It is described to suppress
Plug further includes the water injecting pipeline being fixed on end plate, the Fill control valves on water injecting pipeline, gas exhaust piping and installation
Gas exhausting valve on gas exhaust piping, the molding construction step for suppressing plug further include：
S4 beats water injecting pipeline mounting hole on end plate close to the position of bottom, and gas exhaust piping is beaten in the position close to top on end plate
Mounting hole welds water injecting pipeline in water injecting pipeline position of mounting hole, and water injecting pipeline selects PN16 or more seamless steel pipes, in exhaust pipe
Road position of mounting hole welds gas exhaust piping, and gas exhaust piping selects PN16 or more seamless steel pipes, and water injecting pipeline is separate and end plate
Water filling control valve is installed in one end of welding, and exhaust control valve is installed in the separate one end with end plate welding of gas exhaust piping
Door.
6. the water supply line construction forming method for suppressing plug according to claim 5, it is characterised in that：Water injecting pipeline
The diameter of mounting hole takes 3 inches, and water injecting pipeline selects 3 inches of seamless steel pipe；The diameter of gas exhaust piping mounting hole takes 1 inch,
Gas exhaust piping selects 1 inch of seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610735623.2A CN106271151B (en) | 2016-08-26 | 2016-08-26 | The water supply line construction forming method for suppressing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610735623.2A CN106271151B (en) | 2016-08-26 | 2016-08-26 | The water supply line construction forming method for suppressing plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106271151A CN106271151A (en) | 2017-01-04 |
| CN106271151B true CN106271151B (en) | 2018-08-17 |
Family
ID=57677086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610735623.2A Active CN106271151B (en) | 2016-08-26 | 2016-08-26 | The water supply line construction forming method for suppressing plug |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001194263A (en) * | 2000-01-13 | 2001-07-19 | Ishikawajima Harima Heavy Ind Co Ltd | Water pressure test equipment |
| SE0003460L (en) * | 2000-09-27 | 2002-03-28 | Sts Norrservice Ab | Device and method of sealing test of pipes |
| CN201302524Y (en) * | 2008-10-10 | 2009-09-02 | 安徽海螺川崎节能设备制造有限公司 | Water-pressure test unit for large-diameter thick-wall pipe joint of boiler-steam dome |
| CN201740703U (en) * | 2010-05-12 | 2011-02-09 | 浙江博凡动力装备有限公司 | Pipeline pressure testing device |
| CN103231161A (en) * | 2013-04-03 | 2013-08-07 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Guide rail device and all-position welding technique for hydraulic test sealing head adopting same |
| CN203490036U (en) * | 2013-09-17 | 2014-03-19 | 安徽海螺川崎节能设备制造有限公司 | A hydrostatic test apparatus for a heat recovery boiler evaporator |
| 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 |
| CN204330227U (en) * | 2014-12-22 | 2015-05-13 | 南宁八菱科技股份有限公司 | Anti-detachment performing leak test plug |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6675634B2 (en) * | 2002-03-08 | 2004-01-13 | Est Group, Inc. | Branch pipe/tank nozzle test plug and method of use |
-
2016
- 2016-08-26 CN CN201610735623.2A patent/CN106271151B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001194263A (en) * | 2000-01-13 | 2001-07-19 | Ishikawajima Harima Heavy Ind Co Ltd | Water pressure test equipment |
| SE0003460L (en) * | 2000-09-27 | 2002-03-28 | Sts Norrservice Ab | Device and method of sealing test of pipes |
| CN201302524Y (en) * | 2008-10-10 | 2009-09-02 | 安徽海螺川崎节能设备制造有限公司 | Water-pressure test unit for large-diameter thick-wall pipe joint of boiler-steam dome |
| CN201740703U (en) * | 2010-05-12 | 2011-02-09 | 浙江博凡动力装备有限公司 | Pipeline pressure testing device |
| CN103231161A (en) * | 2013-04-03 | 2013-08-07 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Guide rail device and all-position welding technique for hydraulic test sealing head adopting same |
| CN203490036U (en) * | 2013-09-17 | 2014-03-19 | 安徽海螺川崎节能设备制造有限公司 | A hydrostatic test apparatus for a heat recovery boiler evaporator |
| 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 |
| CN204330227U (en) * | 2014-12-22 | 2015-05-13 | 南宁八菱科技股份有限公司 | Anti-detachment performing leak test plug |
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| Publication number | Publication date |
|---|---|
| CN106271151A (en) | 2017-01-04 |
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Address after: 300384 Tianjin Binhai New Area High-tech Zone Huayuan Industrial Area No. 2, 4-2101 Patentee after: China Construction Municipal Construction Group Co., Ltd. Address before: 300384 No. 2, 4-2101 Rongyuan Road, Huayuan Industrial Area, Binhai New Area, Tianjin Patentee before: Sinohydro Tianjin Engineering Co.,Ltd. |
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