CN111795581A - Preheating device for pipe body of nodular cast iron pipe - Google Patents
Preheating device for pipe body of nodular cast iron pipe Download PDFInfo
- Publication number
- CN111795581A CN111795581A CN202010708216.9A CN202010708216A CN111795581A CN 111795581 A CN111795581 A CN 111795581A CN 202010708216 A CN202010708216 A CN 202010708216A CN 111795581 A CN111795581 A CN 111795581A
- Authority
- CN
- China
- Prior art keywords
- pipe
- preheating
- cast iron
- iron pipe
- nodular cast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 18
- 230000008676 import Effects 0.000 claims abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 239000003973 paint Substances 0.000 abstract description 4
- 238000005246 galvanizing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000005192 partition Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0014—Devices for monitoring temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Coating With Molten Metal (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a preheating device for a pipe body of a nodular cast iron pipe, and relates to the technical field of production of nodular cast iron pipes. The steam preheating device comprises a water tank, fixed mounting has the baffle in the middle of the pond is inside, the baffle will two preheating chambers are cut apart into to the pond, every preheating chamber bottom has all laid the steam pipe, and two preheating chamber inside's steam pipe import is linked together with steam inlet pipe, two preheating chamber inside's steam pipe export is linked together with the wet return, baffle top with there is fixed suspender respectively fixed mounting between the pond both sides top, fixed suspender is unsettled fixed, and places on the fixed suspender cast iron pipe. According to the preheating device for the pipe body of the nodular cast iron pipe, the large-sized cast iron pipe is soaked in the water tank, the pipe body is uniformly heated to the process temperature (lower than 70 ℃) by using hot water in the water tank, the preheating effect is good, meanwhile, the device is small in occupied space and can be placed in front of a galvanizing and paint layer spraying station.
Description
Technical Field
The invention relates to the technical field of nodular cast iron pipe production, in particular to a preheating device for a pipe body of a nodular cast iron pipe.
Background
In the production line of the ductile cast iron pipe, in order to achieve the best pipe body anticorrosion effect, preheating treatment is generally carried out before the pipe body anticorrosion treatment; the corrosion prevention is generally performed by performing operations such as galvanizing, paint coating and the like on the outer wall of the pipe body. Compared with the normal temperature, the preheated pipe body has obviously improved adhesive force and is beneficial to carrying out antiseptic treatment.
At present, the pipe body is preheated by a conventional preheating method, namely, the pipe body is heated by gas in a heating furnace and then is dragged by a chain to a position where the zinc coating and the paint coating are coated.
Disclosure of Invention
The invention provides a preheating device for a ductile cast iron pipe body, and aims to solve the problems in the background art.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the preheating device for the pipe body of the nodular cast iron pipe comprises a water tank, wherein a partition plate is fixedly installed in the middle of the inside of the water tank, the partition plate divides the water tank into two preheating cavities, a heating pipe is paved at the bottom of each preheating cavity, the inlet of each heating pipe in each preheating cavity is communicated with a steam inlet pipe, the outlet of each heating pipe in each preheating cavity is communicated with a water return pipe, a fixing sling is fixedly installed between the upper part of the top of the partition plate and the upper parts of the two sides of the water tank respectively, the fixing sling is suspended and fixed, and the cast iron pipe is placed on the fixing sling.
Preferably, a plurality of heating pipes are laid at the bottom of the preheating cavity, and each heating pipe is spirally distributed and arranged.
Preferably, the bottom of the preheating cavity is also fixedly provided with a support pier, and two ends of the cast iron pipe are positioned on the support pier.
Further, the outer wall of the preheating cavity is respectively and fixedly provided with a scale line, and the tail end of the fixing sling is fixedly arranged in the through hole at the scale line.
In the invention, a temperature sensor is also fixedly arranged in the water tank.
Furthermore, a heat insulation floating ball is further arranged inside each preheating cavity and is arranged on the water surface of the water pool.
In the invention, two sides of the bottom of the water pool are also provided with drain pipes.
Compared with the prior art, the invention has the following beneficial effects: according to the preheating device for the pipe body of the nodular cast iron pipe, the large-sized cast iron pipe is soaked in the water tank, the pipe body is uniformly heated to the process temperature (lower than 70 ℃) by using hot water in the water tank, the preheating effect is good, meanwhile, the device is small in occupied space and can be placed in front of a galvanizing and paint layer spraying station.
Drawings
FIG. 1 is a front view of a schematic structural diagram of the present invention;
FIG. 2 is a top view of a schematic of the structure of the present invention;
FIG. 3 is a side view of a schematic structural diagram of the present invention;
fig. 4 is an enlarged view of a portion a in fig. 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The preheating device for the ductile cast iron pipe body comprises a water tank 2, a partition plate 12 is fixedly installed in the middle of the inside of the water tank 2, the water tank 2 is divided into two preheating cavities by the partition plate 12, a heating pipe 1 is laid at the bottom of each preheating cavity, the inlets of the heating pipes 1 in the two preheating cavities are communicated with a steam inlet pipe 9, the outlets of the heating pipes 1 in the two preheating cavities are communicated with a water return pipe 10, fixing straps 3 are respectively and fixedly installed between the upper portion of the top of the partition plate 12 and the upper portions of the two sides of the water tank 2, the fixing straps 3 are suspended and fixed in a hanging mode, and cast iron pipes 6 are placed on the fixing straps 3.
A certain amount of water is put into the water tank 2, then steam is introduced into the steam inlet pipe 9, the steam flows into the heating pipe 1, the water in the water tank 2 is heated through the heat transfer effect of the heating pipe 1, so that the cast iron pipe 6 in the water tank 2 is preheated, the cast iron pipe 6 is completely positioned in hot water, the preheating uniformity can be fully ensured, the preheating effect is improved, the exchanged steam is condensed into water, and the water is collected by the water return pipe 10 to prevent waste.
Wherein, a plurality of heating pipes 1 are laid at the bottom of the preheating cavity, and each heating pipe 1 is distributed and arranged in a spiral shape, so that the uniformity of water heating in the water tank 2 can be effectively ensured, and the uniformity of preheating the cast iron pipes can be ensured.
In the invention, the bottom of the preheating cavity is also fixedly provided with a support pier 11, and two ends of the cast iron pipe 6 are positioned on the support pier 11, namely the cast iron pipe 6 is simultaneously fixed through the support pier 11 and the fixing sling 3, thus being beneficial to the preheating process.
It should be noted that the cast iron pipe 6 is generally placed on the fixed sling 3 by an electric sling, which may be a sling described in the patent name "a sling dedicated for a cast iron pipe preheating furnace" filed by the applicant on the same day, or a common sling, such as a winch, etc., and is not limited herein.
In the invention, scale lines 5 are respectively and fixedly arranged on the outer wall of the preheating cavity, the tail ends of the fixing slings 3 are fixedly arranged in through holes at the scale lines 5, the height of cast iron pipes 6 of different specifications entering the tank is calibrated by using the scale lines 5, and the problem that the sight of workers is difficult to observe is solved.
In the invention, the temperature sensor 7 is fixedly arranged in the water tank 2, the temperature in the tank is detected by the temperature sensor 7 in the tank, the steam inlet quantity at the steam inlet pipe of the electric valve is adjusted by utilizing the PID controller, the temperature in the tank is adjusted, the water in the tank can be controlled to be always stabilized within the process temperature (lower than 70 ℃), and the preheating uniformity is facilitated.
With reference to fig. 3, further, a heat insulation floating ball 4 is further disposed inside each preheating chamber, the heat insulation floating ball 4 floats on the water surface of the water pool, and heat dissipation in the water pool is properly isolated by the heat insulation floating ball 4.
In the invention, two sides of the bottom of the water pool 2 are also provided with drain pipes 8.
The invention utilizes soaking and suspending fixing of the cast iron pipe to achieve the requirement of uniform heating of the pipe body of the cast iron pipe 6, and has good preheating effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a nodular cast-iron pipe body preheating device which characterized in that: the steam preheating device comprises a water tank, fixed mounting has the baffle in the middle of the pond is inside, the baffle will two preheating chambers are cut apart into to the pond, every preheating chamber bottom has all laid the steam pipe, and two preheating chamber inside's steam pipe import is linked together with steam inlet pipe, two preheating chamber inside's steam pipe export is linked together with the wet return, baffle top with there is fixed suspender respectively fixed mounting between the pond both sides top, fixed suspender is unsettled fixed, and places on the fixed suspender cast iron pipe.
2. The preheating device for the pipe body of the nodular cast iron pipe as claimed in claim 1, wherein: a plurality of heating pipes are laid at the bottom of the preheating cavity, and each heating pipe is distributed and arranged in a spiral shape.
3. The preheating device for the pipe body of the nodular cast iron pipe as claimed in claim 1, wherein: and a support pier is fixedly arranged at the bottom of the preheating cavity, and two ends of the cast iron pipe are positioned on the support pier.
4. The preheating device for the pipe body of the nodular cast iron pipe as claimed in claim 1, wherein: the outer wall of the preheating cavity is further respectively and fixedly provided with scale lines, and the tail ends of the fixing hanging strips are fixedly arranged in through holes in the scale lines.
5. The preheating device for the pipe body of the nodular cast iron pipe as claimed in claim 1, wherein: and a temperature sensor is fixedly arranged in the water pool.
6. The preheating device for the pipe body of the nodular cast iron pipe as claimed in claim 1, wherein: and a heat insulation floating ball is also arranged in each preheating cavity and is arranged on the water surface of the water pool.
7. The preheating device for the pipe body of the nodular cast iron pipe as claimed in claim 1, wherein: and drain pipes are arranged on two sides of the bottom of the water pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010708216.9A CN111795581B (en) | 2020-07-22 | 2020-07-22 | Nodular cast iron pipe shaft preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010708216.9A CN111795581B (en) | 2020-07-22 | 2020-07-22 | Nodular cast iron pipe shaft preheating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111795581A true CN111795581A (en) | 2020-10-20 |
| CN111795581B CN111795581B (en) | 2024-07-02 |
Family
ID=72827374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010708216.9A Active CN111795581B (en) | 2020-07-22 | 2020-07-22 | Nodular cast iron pipe shaft preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111795581B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4028099A (en) * | 1975-04-17 | 1977-06-07 | Ford Motor Company | Continuous stream - inclined trough treatment of ductile iron |
| JPH10118405A (en) * | 1996-10-22 | 1998-05-12 | Osaka Gas Co Ltd | Method for concentrating liquid |
| US20020009118A1 (en) * | 1999-07-08 | 2002-01-24 | Nkk Corporation, 1-2, Marunouchi 1-Chome, Chiyoda-Ku, Tokyo, Japan | Apparatus for arc-melting cold iron source and method threof |
| CN1919493A (en) * | 2006-09-25 | 2007-02-28 | 边仁杰 | Gradual curve cast-steel (blank) apparatus continuous casting technology and cloth bag layer use |
| CN207831951U (en) * | 2017-12-27 | 2018-09-07 | 北京蓝天沃土科贸有限公司 | A kind of gas discharging apparatus |
| CN212902682U (en) * | 2020-07-22 | 2021-04-06 | 广东新兴铸管有限公司 | Preheating device for pipe body of nodular cast iron pipe |
-
2020
- 2020-07-22 CN CN202010708216.9A patent/CN111795581B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4028099A (en) * | 1975-04-17 | 1977-06-07 | Ford Motor Company | Continuous stream - inclined trough treatment of ductile iron |
| JPH10118405A (en) * | 1996-10-22 | 1998-05-12 | Osaka Gas Co Ltd | Method for concentrating liquid |
| US20020009118A1 (en) * | 1999-07-08 | 2002-01-24 | Nkk Corporation, 1-2, Marunouchi 1-Chome, Chiyoda-Ku, Tokyo, Japan | Apparatus for arc-melting cold iron source and method threof |
| CN1919493A (en) * | 2006-09-25 | 2007-02-28 | 边仁杰 | Gradual curve cast-steel (blank) apparatus continuous casting technology and cloth bag layer use |
| CN207831951U (en) * | 2017-12-27 | 2018-09-07 | 北京蓝天沃土科贸有限公司 | A kind of gas discharging apparatus |
| CN212902682U (en) * | 2020-07-22 | 2021-04-06 | 广东新兴铸管有限公司 | Preheating device for pipe body of nodular cast iron pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111795581B (en) | 2024-07-02 |
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