CN110283954A - A kind of blast furnace cooling stave pressure testing device and method - Google Patents
A kind of blast furnace cooling stave pressure testing device and method Download PDFInfo
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- CN110283954A CN110283954A CN201910577096.0A CN201910577096A CN110283954A CN 110283954 A CN110283954 A CN 110283954A CN 201910577096 A CN201910577096 A CN 201910577096A CN 110283954 A CN110283954 A CN 110283954A
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- pressing plate
- pressure testing
- link mechanism
- blast furnace
- testing device
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
- C21B7/103—Detection of leakages of the cooling liquid
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of blast furnace cooling stave pressure testing device and methods, including pressing plate and jack machinism, support column and link mechanism that pressing plate both ends are arranged in；Support column is arranged between the end of pressing plate and jack machinism, and link mechanism is arranged in support column and connect with the first end at the driving end of the column articulated jack machinism of support and link mechanism, and the first end to drive linkage arrangement pumps；Second side pressure of link mechanism is set to and pressing plate and is rotatably connected with pressing plate, to apply downward pressure to pressing plate when the first end of link mechanism is moved upwards so that pressing plate while compressing multiple water cooling tubes.The present invention sets pressing plate by pressing at the top of several water cooling tubes, one group of jack machinism and link mechanism is respectively set in the two sides of pressing plate, it is matched by jack machinism and link mechanism to apply pressure to pressing plate from both ends simultaneously, multiple water cooling tubes are compressed simultaneously to carry out work pressure test to realize, substantially increase pressure testing efficiency.
Description
Technical field
The present invention relates to metallurgical equipment mounting technique field, in particular to a kind of blast furnace cooling stave pressure testing device and
Method.
Background technique
Cooling by water wall is provided in the furnace wall of modern blast furnace, cooling wall ontology divides iron cooling wall and copper cooling
Wall, inside be made of curved waterpipe, when cooling, realized by being sent into clean cooling water into water pipe to blast furnace burner hearth
The effect of cooling.So the heavy Testing index wanted of blast furnace cooling stave is exactly that internal cooling water pipe is not permeable under design pressure
Leakage, bubbling.
One blast furnace cooling stave is generally made of 300 muti-pieces, and one piece of cooling wall cold water pipe goes out form, work pressure test for 4 into 4
It measures very big.Current cooling wall hydraulic pressure pressure testing device, mainly takes following two method: 1, with rubber ring block port of steel pipe,
Nozzle is compressed using the downward expansive force of rubber ring and fastening bolt；2, water cooling tube side is held out against using bolt cooperation pivot flange
Wall, water cooling pipe end-cap are connect with pivot flange by screw rod, and end cap is compressed by the tightening of bolt and carries out pressure testing.This pressure testing
Device is high to the required precision of cooling wall water pipe cross dimensions, the dilatancy to rubber ring and the tolerance fit degree requirement with nozzle
Height, otherwise rubber mat is poorly sealed, causes to leak, and needs repeatedly to be adjusted, and handling are bothersome laborious, and working efficiency is low.
There is also following disadvantages during actual pressure testing: (1) 8 water cooling tubes are both needed to individually install pressure testing device, work
Work amount is big, time-consuming；(2) it is buckled into water cooling tube by ball or rubber sealing boot and carries out pressure testing to each water cooling tube and rubber
Glueballs processing dimension requires height, can not form batch machining.The easily leak during pressure testing when generating cooperation deviation；(3) lead to
It crosses tie down screw and end cap carries out the tightening force for needing to adjust each screw rod to water cooling tube pressure testing, it is time-consuming；When a water
Pressure testing process easily leaks when 4 screw rod unbalance stress on cold pipe.
Summary of the invention
In consideration of it, the invention proposes a kind of blast furnace cooling stave pressure testing device and methods, it is intended to it is cooling to solve existing blast furnace
The problem that nozzle leaks and pressure testing efficiency is lower is easy to appear during wall pressure testing.
On one side, the invention proposes a kind of blast furnace cooling stave pressure testing devices, comprising: to be pressed on several water cooling tubes
The pressing plate at top and jack machinism, support column and the link mechanism that the pressing plate both ends are set；The support column is arranged in institute
It states between the end of pressing plate and the jack machinism, the link mechanism is arranged in the support column and cuts with scissors with the support column
It connects；The driving end of the jack machinism is connect with the first end of the link mechanism, to drive the first of the link mechanism
End pumps；Second side pressure of the link mechanism is set to the pressing plate, to the first end in the link mechanism
It when moving upwards, is rotated down using the support column as fulcrum, to apply downward pressure to the pressing plate so that institute
It states pressing plate while compressing multiple water cooling tubes.
Further, in above-mentioned blast furnace cooling stave pressure testing device, the link mechanism includes: the first rod body part, bending section
With the second rod body part；Wherein, first rod body part is connect with the driving end of the jack machinism, and the second rod body part pressure is set
In the pressing plate；The bending section inclination is connected between first rod body part and second rod body part, also, described curved
The centre of pars convoluta offers mounting hole, and the two sides of the bending section offer connecting hole, to the shaft on the support column
Connection.
Further, in above-mentioned blast furnace cooling stave pressure testing device, the two sides of the pressing plate end be respectively arranged with it is described
The connecting plate of shaft connection on support column.
Further, in above-mentioned blast furnace cooling stave pressure testing device, the support column includes: column and is connected to the column
The support of lower part；Wherein, several mounting holes are set on the column, are provided with locking pin on the support, the locking pin with
The mounting hole matches, to adjust the height of the column.
Further, in above-mentioned blast furnace cooling stave pressure testing device, through slot is offered on the pressing plate, to different spacing
Water cooling tube compressed.
Further, in above-mentioned blast furnace cooling stave pressure testing device, each jack machinism is symmetricly set on the pressing plate
Both ends.
Further, in above-mentioned blast furnace cooling stave pressure testing device, each link mechanism is symmetricly set on the pressing plate
Both ends.
Further, in above-mentioned blast furnace cooling stave pressure testing device, the jack machinism is hydraulic jack.
Further, in above-mentioned blast furnace cooling stave pressure testing device, further includes: the pedestal of cooling wall two sides is set；Wherein,
The support column is all arranged on the base with the jack machinism.
In the present invention, pressing plate is set by pressing at the top of several water cooling tubes, one group of crane is respectively set in the two sides of pressing plate
Structure and link mechanism are matched by jack machinism and link mechanism to apply pressure to pressing plate from both ends simultaneously, to realize
Multiple water cooling tubes are compressed simultaneously to carry out work pressure test, substantially increasing pressure testing efficiency and avoiding needs repeatedly in the prior art
Mounting and adjusting pressure test tool and it is poorly sealed caused by seepage problem.
On the other hand, the invention also provides a kind of pressure-measuring methods of blast furnace cooling stave, method includes the following steps: step
Suddenly (1) installs water cooling pipe end-cap according to the nozzle sizes of branch water cooling tube each in blast furnace cooling stave, and rubber is arranged in end cap
Gasket；Step (2), blast furnace cooling stave pressure testing device is installed in the two sides of each group water cooling tube respectively on the cooling wall；Step (3),
Start the jack machinism in the blast furnace cooling stave pressure testing device, makes it that link mechanism be driven to make connecting rod while moving upwards
Structure compresses the end cap of water cooling nozzle with dynamic pressure plate to carry out pressure testing；Step (4), after the completion of the cooling wall pressure testing, to described
After jack machinism carries out pressure release, device is moved integrally to next group of cooling wall and continues pressure testing.
Pressure-measuring method provided by the invention can be with by the way that scattered pressure testing part is fabricated to a set of integral pressure testing apparatus
Pressure testing is carried out simultaneously to the water cooling tube on water-cooling wall, next piece of cooling wall can be quickly moved to after the completion of one piece of cooling wall pressure testing
Work pressure test is carried out, pressure testing quality and efficiency are effectively raised.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the three dimensional structure diagram of blast furnace cooling stave pressure testing device provided in an embodiment of the present invention；
Fig. 2 is the arrangement schematic diagram of blast furnace cooling stave pressure testing provided in an embodiment of the present invention end face.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Installation practice:
Refering to fig. 1, the blast furnace cooling stave pressure testing device of the embodiment of the present invention includes: to be pressed at the top of several water cooling tubes
Pressing plate 1 and the jack machinism 2, support column 6 and link mechanism 3 at the pressing plate both ends are set；The support column 6 is arranged in institute
State between the end of pressing plate 1 and the jack machinism 2, the link mechanism 3 be arranged in the support column 6 and with the support column
6 is hinged；The driving end of the jack machinism 2 is connect with the first end (right end shown in Fig. 1) of the link mechanism 3, to
The first end of the link mechanism 2 is driven to pump；The second end (left end shown in Fig. 1) of the link mechanism 2
Pressure is set to and the pressing plate 1 and is rotatably connected with the pressing plate 1, to when the first end of the link mechanism 2 moves upwards,
It is rotated down with the support column 6 for fulcrum, to apply downward pressure to the pressing plate 1 so that the pressing plate 1 is same
When compress multiple water cooling tubes 4.
Specifically, pressing plate 1 can be the steel plate of channel steel shape formula, the end cap of water cooling tube 4 can be compressed.Due to each water
It is provided with connecting rod 41 on the end cap of cold pipe 4, therefore, in order to guarantee that pressing plate 1 can compress the end cap of water cooling tube, is needed in pressing plate
Card slot is opened up on 1, so that pressing plate is fed through after connecting rod being pressed at the top of end cap of being bonded, to seal the progress of water cooling nozzle
Work pressure test.
Preferably, through slot 11 is offered on the pressing plate 1, is compressed to the water cooling tube to different spacing, through slot 11
Width can match with the outer diameter of the connecting rod in water cooling pipe end-cap, in this way face different spacing water cooling tube when, this
Pressure testing device in embodiment still can carry out pressure testing to it, considerably increase the versatility of pressure testing device.
A jack machinism 2 and one group of link mechanism 3 is respectively set at 1 both ends of pressing plate, with by jack machinism and
Link mechanism is matched to apply pressure to pressing plate from both ends simultaneously.
Preferably, each jack machinism 2 is symmetricly set on the both ends of the pressing plate 1；Each link mechanism 3 is symmetrically set
It sets at the both ends of the pressing plate 1, so that pressing plate uniform force, so that the nozzle uniform force of water cooling tube 4.
More specifically, jack machinism 2 can be hydraulic jack, such as manually hydraulic jack, pass through hydraulic jack
The piston rod drive linkage arrangement 3 on top pumps, so rotate downward or upward in a certain range with dynamic pressure plate 1 from
And compress water cooling pipe end-cap or unclamped from water cooling pipe end-cap, by the artificial locking of jack oil pressure clamping platen substitution or manually
Ball is placed, installation and removal are simpler, and sealing is tighter, not different and artificially by power limit by nozzle sizes, avoid
The bad phenomenon of nozzle leakage.
Link mechanism 3 can be formed together the knot of crank link mechanism for any one energy and jack machinism in the prior art
Structure, the present embodiment are not limited in any way it.Link mechanism 3 can be the connecting rod with certain curvature, connecting rod knot
The middle part and two sides of structure offer mounting hole, in order to be that fulcrum can be rotated relative to support column 6 with support column 6.
The support column 6 includes: column 61 and the support 62 for being connected to the column lower part；Wherein, on the column 61
Several mounting hole (not shown)s are set, locking pin 621, the locking pin 621 and the peace are provided on the support 62
Dress hole matches, to adjust the height of the column.
Specifically, the height of column can be adjusted according to the height of lifting equipment, link mechanism and cooling wall, adjust
After the completion of whole, by tightening locking pin, column can be locked, can then carry out pressure testing test.
The present embodiment can also include: the pedestal 5 that cooling wall two sides are arranged in, and jack machinism 2 can be placed on it, pedestal
5 structure can be determines according to actual conditions.
It is above-mentioned obviously it can be concluded that, the blast furnace cooling stave pressure testing device provided in the present embodiment, by several water cooling tubes
Top pressure sets pressing plate, and one group of jack machinism and link mechanism is respectively set in the two sides of pressing plate, passes through jack machinism and connecting rod knot
Structure is matched to apply pressure to pressing plate from both ends simultaneously, is compressed simultaneously to carry out pressure testing work to realize to multiple water cooling tubes
Make, substantially increase pressure testing efficiency and avoiding need in the prior art multiple mounting and adjusting pressure test tool and it is poorly sealed caused by
Seepage problem.
With continued reference to Fig. 1, in above-described embodiment, the link mechanism 3 includes: the first rod body part 31, bending section 32 and
Bipole body portion 33；Wherein, first rod body part 31 is connect with the driving end of the jack machinism 2, second rod body part 33
Pressure is set to the pressing plate 1；The inclination of bending section 32 is connected between first rod body part 31 and second rod body part 33,
Also, the centre of the bending section 32 offers mounting hole, and the two sides of the bending section offer connecting hole, to the branch
Shaft connection on dagger 32.First rod body part 31 can be the plate being made of one piece by semi arch structure and rectangular configuration
Structure can be fixedly connected with the driving end of jack machinism.The shape of second rod body part 33 and the shape of the first rod body part can
To be consistent.Bending section 32 can enclose mounting hole made of setting by the curved connecting plate and the two of two sides and form, and two curved
The both ends of connecting plate are connected with the first rod body part 31 and the second rod body part 33 respectively.
In the various embodiments described above, the two sides of 1 end of pressing plate are respectively arranged with to be connected with the shaft on the support column 32
The connecting plate 12 connect.Pressing plate can be column articulated with support by the connecting plate of its two sides, with opposite under the drive of link mechanism
Small rotation occurs to compress water cooling tube nozzle in support column.Incorporated by reference to shown in Fig. 1-2, to have two groups of water cooling tubes, every group
For the water-cooling wall that water cooling tube is 4, the course of work of blast furnace cooling stave pressure testing device in the present embodiment are as follows: in water-cooling wall two sides
One group of pressure testing device is set at the position opposite with one group of water cooling tube both ends, by pressing the handle of jack, so that jack
Hydraulic piston move upwards, and then drive connecting rod using support column hinge as support rotating so that connecting rod second end is downward
Pressing plate is pressed, so that each water cooling tube ferrule is good, to carry out work pressure test.
To sum up, blast furnace cooling stave pressure testing device provided by the invention sets pressing plate by pressing at the top of several water cooling tubes, is pressing
One group of jack machinism and link mechanism is respectively set in the two sides of plate, is matched by jack machinism and link mechanism simultaneously from two
End applies pressure to pressing plate, compresses simultaneously to carry out work pressure test to realize to multiple water cooling tubes, substantially increases pressure testing effect
Rate, in addition, present apparatus dress, tearing open simpler, sealing is tighter, not different and artificially by power limit by nozzle sizes, avoids pipe
The problem of mouth leakage.
Embodiment of the method:
The invention also provides a kind of pressure-measuring methods of blast furnace cooling stave, comprising the following steps:
Step S1 installs water cooling pipe end-cap according to the nozzle sizes of branch water cooling tube each in blast furnace cooling stave, and in end cap
Rubber sheet gasket is set.Such as the rubber sheet gasket being arranged in end cap with a thickness of 3mm.
Step S2, blast furnace cooling stave pressure testing device is installed in the two sides of each group water cooling tube respectively on the cooling wall.
Specifically, two lifting equipments and link mechanism are respectively set at the both ends of two groups of water cooling tubes, by two pressing plates
It is pressed on the installation that pressure testing device can be completed in two groups of water cooling pipe end-caps respectively.
Step S3 starts the jack machinism in the blast furnace cooling stave pressure testing device, makes it that link mechanism be driven to transport upwards
Link mechanism is made to compress the end cap of water cooling nozzle with dynamic pressure plate to carry out pressure testing while dynamic.Wherein it is possible to according to water-cooling wall
On water cooling tube group number selection pressure testing device number, such as on one group of water-cooling wall be arranged side by side two groups of water cooling tubes, then can
To select two groups of pressure testing devices to be separately mounted on two groups of water cooling tubes, to carry out pressure testing simultaneously to multiple water cooling tubes.
Step S4 after carrying out pressure release to the jack machinism, is moved integrally to next group after the completion of the cooling wall pressure testing
Cooling wall continues pressure testing.Since pressure testing device installing and dismounting is simple, can quickly the water cooling tube to multiple groups water-cooling wall carry out
Pressure testing substantially increases pressure testing efficiency.
It is above-mentioned obviously it can be concluded that, the blast furnace cooling stave pressure-measuring method provided in the present embodiment, by by scattered pressure testing
Part is fabricated to a set of integral pressure testing apparatus, can carry out pressure testing simultaneously to the water cooling tube on water-cooling wall, try in one piece of cooling wall
It can be quickly moved to next piece of cooling wall after the completion of pressure and carry out work pressure test, effectively raise pressure testing quality and efficiency.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of blast furnace cooling stave pressure testing device characterized by comprising to be pressed on pressing plate at the top of several water cooling tubes and
Jack machinism, support column and the link mechanism at the pressing plate both ends are set；
The support column is arranged between the end of the pressing plate and the jack machinism, and the link mechanism is arranged in the branch
Dagger and with it is described support it is column articulated；
The driving end of the jack machinism is connect with the first end of the link mechanism, to drive the first of the link mechanism
End pumps；Second side pressure of the link mechanism is set to the pressing plate, to the first end in the link mechanism
It when moving upwards, is rotated down using the support column as fulcrum, to apply downward pressure to the pressing plate so that institute
It states pressing plate while compressing multiple water cooling tubes.
2. blast furnace cooling stave pressure testing device according to claim 1, which is characterized in that the link mechanism includes: first
Rod body part, bending section and the second rod body part；Wherein,
First rod body part is connect with the driving end of the jack machinism, and the second rod body part pressure is set to the pressing plate；
The bending section inclination is connected between first rod body part and second rod body part, also, the bending section
Centre offers mounting hole, and the two sides of the bending section offer connecting hole, to connect with the shaft on the support column.
3. blast furnace cooling stave pressure testing device according to claim 1, which is characterized in that distinguish the two sides of the pressing plate end
It is provided with the connecting plate connecting with the shaft on the support column.
4. blast furnace cooling stave pressure testing device according to claim 1, which is characterized in that the support column include: column and
It is connected to the support of the column lower part；Wherein,
Several mounting holes are set on the column, locking pin, the locking pin and the mounting hole phase are provided on the support
Cooperation, to adjust the height of the column.
5. blast furnace cooling stave pressure testing device according to any one of claim 1 to 4, which is characterized in that on the pressing plate
Through slot is offered, is compressed to the water cooling tube to different spacing.
6. blast furnace cooling stave pressure testing device according to any one of claim 1 to 4, which is characterized in that each lifting
Mechanism is symmetricly set on the both ends of the pressing plate.
7. blast furnace cooling stave pressure testing device described in any one of Claims 1-4, which is characterized in that each link mechanism
It is symmetricly set on the both ends of the pressing plate.
8. blast furnace cooling stave pressure testing device according to any one of claim 1 to 4, which is characterized in that the crane
Structure is hydraulic jack.
9. blast furnace cooling stave pressure testing device according to any one of claim 1 to 4, which is characterized in that further include: setting
Pedestal in cooling wall two sides；Wherein,
The support column is all arranged on the base with the jack machinism.
10. a kind of pressure-measuring method of blast furnace cooling stave, which comprises the following steps:
Step (1) installs water cooling pipe end-cap according to the nozzle sizes of branch water cooling tube each in blast furnace cooling stave, and sets in end cap
Set rubber sheet gasket；
Step (2), blast furnace cooling stave pressure testing device is installed in the two sides of each group water cooling tube respectively on the cooling wall；
Step (3) starts the jack machinism in the blast furnace cooling stave pressure testing device, makes it that link mechanism be driven to move upwards
Link mechanism is made to compress the end cap of water cooling nozzle with dynamic pressure plate to carry out pressure testing simultaneously；
After carrying out pressure release to the jack machinism, device is moved integrally under after the completion of the cooling wall pressure testing for step (4)
One group of cooling wall continues pressure testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577096.0A CN110283954B (en) | 2019-06-28 | 2019-06-28 | Pressure testing device and method for cooling wall of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577096.0A CN110283954B (en) | 2019-06-28 | 2019-06-28 | Pressure testing device and method for cooling wall of blast furnace |
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| Publication Number | Publication Date |
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| CN110283954A true CN110283954A (en) | 2019-09-27 |
| CN110283954B CN110283954B (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910577096.0A Active CN110283954B (en) | 2019-06-28 | 2019-06-28 | Pressure testing device and method for cooling wall of blast furnace |
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| JPS58161713A (en) * | 1982-03-18 | 1983-09-26 | Nippon Kokan Kk <Nkk> | Automatic monitoring device of discharging condition of cooling water for furnace body |
| CN201875326U (en) * | 2010-12-10 | 2011-06-22 | 中国二十二冶集团有限公司 | Pressure testing device for single component of water cooled wall of blast furnace |
| CN205670069U (en) * | 2016-05-30 | 2016-11-02 | 中国十九冶集团有限公司 | Blast furnace copper cooling stave hydraulic pressure pressure testing device |
| CN205910053U (en) * | 2016-08-01 | 2017-01-25 | 沭阳新辰公路仪器有限公司 | Disconnected testing arrangement is pressed in energy -conserving test block |
| CN206352149U (en) * | 2017-01-19 | 2017-07-25 | 山西中科正泰机械制造有限公司 | A kind of blast furnace cooling stave pressure testing device |
| CN206843516U (en) * | 2017-06-30 | 2018-01-05 | 马鞍山市润通冶金材料有限公司 | A kind of water pipe pressure testing device of blast furnace cooling stave |
-
2019
- 2019-06-28 CN CN201910577096.0A patent/CN110283954B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58161713A (en) * | 1982-03-18 | 1983-09-26 | Nippon Kokan Kk <Nkk> | Automatic monitoring device of discharging condition of cooling water for furnace body |
| CN201875326U (en) * | 2010-12-10 | 2011-06-22 | 中国二十二冶集团有限公司 | Pressure testing device for single component of water cooled wall of blast furnace |
| CN205670069U (en) * | 2016-05-30 | 2016-11-02 | 中国十九冶集团有限公司 | Blast furnace copper cooling stave hydraulic pressure pressure testing device |
| CN205910053U (en) * | 2016-08-01 | 2017-01-25 | 沭阳新辰公路仪器有限公司 | Disconnected testing arrangement is pressed in energy -conserving test block |
| CN206352149U (en) * | 2017-01-19 | 2017-07-25 | 山西中科正泰机械制造有限公司 | A kind of blast furnace cooling stave pressure testing device |
| CN206843516U (en) * | 2017-06-30 | 2018-01-05 | 马鞍山市润通冶金材料有限公司 | A kind of water pipe pressure testing device of blast furnace cooling stave |
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|---|---|
| CN110283954B (en) | 2021-05-18 |
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