CN212534804U - High-temperature-resistant reinforced concrete combined column for fire laboratory of electrical equipment - Google Patents
High-temperature-resistant reinforced concrete combined column for fire laboratory of electrical equipment Download PDFInfo
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- CN212534804U CN212534804U CN202020662422.6U CN202020662422U CN212534804U CN 212534804 U CN212534804 U CN 212534804U CN 202020662422 U CN202020662422 U CN 202020662422U CN 212534804 U CN212534804 U CN 212534804U
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Abstract
The utility model relates to a high temperature resistance electrical equipment conflagration laboratory reinforced concrete combination post, including reinforced concrete combination post main part and basalt fiber cloth. The reinforced concrete combined column main body comprises a cross-shaped reinforced concrete column and plain concrete protection layers arranged on the side walls of the end parts of the cross-shaped reinforced concrete column, which extend outwards. And a cooling channel is arranged in the plain concrete protective layer. And a cooling water pipe assembly is arranged between two adjacent plain concrete protective layers. The cooling water pipe assembly comprises a longitudinal water pipe arranged on one side of the cross-shaped reinforced concrete column cross connection part and two horizontal water distribution pipes which are respectively arranged on two sides of the longitudinal water pipe and are communicated with the longitudinal water pipe. One end of the horizontal water distribution pipe is connected to the longitudinal water pipe, and the other end of the horizontal water distribution pipe is provided with a spray head used for spraying water into the cooling channel. The utility model discloses a to the design of electrical equipment conflagration laboratory characteristics, have good high temperature resistance, effectively improved the structural security of the interior fire prevention cylinder of electrical equipment conflagration laboratory.
Description
Technical Field
The utility model relates to a high temperature resistant post technical field in electrical equipment conflagration laboratory, concretely relates to high temperature resistant electrical equipment conflagration laboratory reinforced concrete combination post.
Background
The electrical equipment conflagration laboratory is the place of test electrical equipment performance under the conflagration, need carry out the burning test to equipment, therefore the laboratory internal temperature is higher, needs to set up the structure post that has high temperature resistant performance. This puts demands on the shock resistance of the laboratory cylinders, since the gas cylinders used for storing the fuel in the laboratory run the risk of explosion. Conventional reinforced concrete cylinder exposes can reduce the durability under high temperature environment, and concrete self can take place to burst under the uniform temperature, and intensity reduces by a wide margin, and the inside reinforcing bar of cylinder intensity also can reduce by a wide margin under the high temperature, has seriously influenced the structural performance of cylinder, has great potential safety hazard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high temperature resistance electrical equipment conflagration laboratory reinforced concrete combination post, this reinforced concrete combination post are designed to electrical equipment conflagration laboratory characteristics, have good high temperature resistance and shock resistance, have effectively improved the structural security of the interior high temperature resistant cylinder of electrical equipment conflagration laboratory.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-temperature-resistant reinforced concrete combined column for an electrical equipment fire laboratory comprises a reinforced concrete combined column main body and basalt fiber cloth wrapped on the outer side of the reinforced concrete combined column main body.
The reinforced concrete combined column main body comprises a cross-shaped reinforced concrete column and plain concrete protection layers arranged on the side walls of the end parts of the cross-shaped reinforced concrete column, which extend outwards; a cooling channel is formed in the plain concrete protective layer; a cooling water pipe assembly is arranged between two adjacent plain concrete protective layers; the cooling water pipe assembly comprises a longitudinal water pipe arranged on one side of the cross joint of the cross reinforced concrete column and two horizontal water distribution pipes which are respectively arranged on two sides of the longitudinal water pipe and are communicated with the longitudinal water pipe; one end of the horizontal water distribution pipe is connected to the longitudinal water pipe, and the other end of the horizontal water distribution pipe is provided with a spray head used for spraying water into the cooling channel.
Furthermore, the cross-shaped reinforced concrete column comprises a first reinforced concrete column and a second reinforced concrete column which are arranged in a cross manner; the side walls of the front end and the rear end of the first reinforced concrete column are respectively connected with a plain concrete protective layer; and the side walls of the left end and the right end of the reinforced concrete column II are respectively connected with a plain concrete protective layer.
Furthermore, a temperature sensor is arranged in the cooling channel.
Furthermore, a basalt fiber grid is arranged in the plain concrete protective layer; the plain concrete protective layer is connected with the cross-shaped reinforced concrete column through an anchor bolt; one end of the anchor bolt is positioned in the plain concrete protective layer, and the other end of the anchor bolt penetrates through the basalt fiber grating and then is fixed in the cross-shaped reinforced concrete column.
Furthermore, the cooling water pipe assembly is located on the inner side of the basalt fiber cloth.
Further, the basalt fiber cloth is connected with the plain concrete protective layer through high-temperature-resistant inorganic glue. The basalt fiber cloth is distributed in an octagonal shape along the periphery of the reinforced concrete combined column main body, and four sides of the basalt fiber cloth are connected with the plain concrete protective layer through high-temperature-resistant inorganic glue. The plain concrete protective layer is a cuboid, one surface of the plain concrete protective layer is in contact with the cross-shaped reinforced concrete column, and the other opposite surface of the plain concrete protective layer is in contact with the basalt fiber cloth.
Furthermore, the cooling channels comprise a plurality of cooling channels which are uniformly distributed along the longitudinal direction of the plain concrete protective layer, and the left end and the right end of each cooling channel are provided with openings; the horizontal water distribution pipes comprise a plurality of horizontal water distribution pipes which are uniformly distributed along the length direction of the longitudinal water pipes, and the number of the horizontal water distribution pipes on the same side of the longitudinal water pipes is equal to that of the cooling channels arranged on the same plain concrete protective layer; and the spray heads on the horizontal water distribution pipes at two sides of the longitudinal water pipe respectively extend into the cooling channels on the two adjacent plain concrete protective layers.
Furthermore, the longitudinal water pipe and the horizontal water distribution pipe are connected with the cross-shaped reinforced concrete column through connecting pieces; the connecting piece includes the gasket of fixing on cross reinforced concrete column through the bolt and the lantern ring that links to each other with the gasket through the dead lever. The longitudinal water pipe and the horizontal water distribution pipe are connected with the cross-shaped reinforced concrete column body through connecting pieces. The connecting pieces are arranged on the cross-shaped reinforced concrete column body at intervals along the vertical direction. The lantern ring, the fixing rod and the gasket are connected into a whole, the gasket is provided with a round hole, and the bolt penetrates through the round hole to be anchored in the cross-shaped reinforced concrete column body, so that the connecting piece is fixed on the column body. The lantern ring is used for fixing the longitudinal water pipe or the horizontal water distribution pipe. The water pipe is fixed by the connecting piece, so that the structural stability of the longitudinal water pipe and the horizontal water distribution pipe is improved, and the water pipe is prevented from being bent.
Further, the inlet of the longitudinal water pipe is connected with a water supply pipeline. The water supply in the water supply pipeline is controlled by a remote control valve, and the valve is opened to supply water when the water supply is needed.
Furthermore, the plain concrete protective layer is provided with drainage channels distributed along the longitudinal direction, and each drainage channel comprises a plurality of drainage pipelines I for communicating two adjacent cooling channels and a drainage pipeline II for communicating the lowermost cooling channel with an underground drainage pipe; the middle of the bottom surface of the cooling channel is low, the two sides of the bottom surface of the cooling channel are high, the slope is 5% from the two ends to the middle of the bottom surface of the cooling channel, and a through hole is formed in the middle of the bottom of the cooling channel. The drainage channels are connected with the cooling channels in the vertical direction, are arranged to the bottom of the plain concrete protective layer and are connected with an underground drainage pipe on the ground; the bottom of the cooling channel is sloped 5% from two ends to the middle, so that water can flow into the drainage channel and is drained away by the drainage pipe.
Compared with the prior art, the utility model has the advantages that:
(1) through adopting the structure cylinder as electrical equipment conflagration laboratory by the combination column that comprises cross reinforced concrete column, plain concrete protective layer and basalt fiber cloth to set up cooling water pipe assembly between adjacent plain concrete protective layer, set up the cooling passageway on plain concrete protective layer, can utilize cooling water pipe spun water to cool down plain concrete protective layer, improve the high temperature resistance and the structural safety of electrical equipment conflagration laboratory cylinder.
(2) The plain concrete protection layer is arranged on the outer side of the reinforced concrete column, so that the thickness of four outwards extending end parts of the whole combined column can be increased, and the rigidity of the whole combined column is increased; and the basalt fiber grating is arranged in the plain concrete protective layer, so that the bonding force of concrete can be increased, and the strength of the whole combined column can be increased. The rigidity and strength of the whole composite column are improved, and the impact resistance is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the present invention without basalt fiber cloth, in which only one cooling water pipe assembly is shown;
FIG. 3 is a schematic structural diagram of the present invention without the basalt fiber cloth and cooling water pipe assembly;
FIG. 4 is a sectional view taken along line A-A of FIG. 1;
FIG. 5 is a sectional view taken along line B-B of FIG. 1;
FIG. 6 is a front view of a plain concrete protective layer;
FIG. 7 is a side view of a plain concrete protective layer;
FIG. 8 is a schematic view of the structure of the connector;
FIG. 9 is a schematic view showing an assembled structure of the connecting member and the cross-shaped reinforced concrete column;
FIG. 10 is a schematic view of the assembly structure of the cooling water pipe assembly and the cross-shaped reinforced concrete column;
FIG. 11 is a schematic view of the connection of the longitudinal water pipes to the water supply lines.
Wherein:
1. cross reinforced concrete column, 2, plain concrete protective layer, 3, basalt fiber cloth, 4, vertical water pipe, 5, horizontal distributive pipe, 6, shower nozzle, 7, connecting piece, 8, high temperature resistant inorganic glue, 9, bolt, 10, gasket, 11, dead lever, 12, the lantern ring, 13, temperature sensor, 14, cooling channel, 15, drainage channel, 16, drain pipe, 17, water supply pipe, 18, control valve, 19, water supply pipe distal end, 20, crab-bolt, 21, basalt fiber grating.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
the reinforced concrete composite column for the fire laboratory of the high-temperature-resistant electrical equipment, as shown in fig. 1 to 11, comprises a reinforced concrete composite column main body and basalt fiber cloth 3 wrapped outside the reinforced concrete composite column main body.
The reinforced concrete composite column main body comprises a cross reinforced concrete column 1 and plain concrete protection layers 2 arranged on the side walls of the end parts of the cross reinforced concrete column 1, which extend outwards. The cross-shaped reinforced concrete column 1 comprises a first reinforced concrete column and a second reinforced concrete column which are arranged in a cross manner. A plain concrete protective layer 2 is respectively connected to the front side wall and the rear side wall of the reinforced concrete column I; and a plain concrete protective layer 2 is respectively connected to the left side wall and the right side wall of the reinforced concrete column II. The front-back, left-right, and left-right in the present invention are explained according to the front-back, left-right, and left-right shown in fig. 1.
A cooling channel 14 is formed in the plain concrete protective layer 2, and the cooling channel 14 is cylindrical. And a cooling water pipe assembly is arranged between two adjacent plain concrete protective layers 2. The cooling water pipe assembly comprises a longitudinal water pipe 4 arranged on one side of a cross-shaped cross joint of the cross-shaped reinforced concrete column 1 and two horizontal water distribution pipes 5 which are respectively arranged on two sides of the longitudinal water pipe 4 and are communicated with the longitudinal water pipe 4; one end of the horizontal water distribution pipe 5 is connected to the longitudinal water pipe 4, and the other end of the horizontal water distribution pipe is provided with a spray head 6 used for spraying water into the cooling channel 14. The spray head 6 is positioned at the opening of the cooling channel 14 correspondingly arranged or extends into the cooling channel 14 from the opening of the cooling channel 14.
Further, a temperature sensor 13 is arranged in the cooling channel 14. And a temperature sensor 13 for detecting the temperature in the temperature-decreasing channel 14.
Further, a basalt fiber grid 21 is arranged in the plain concrete protective layer 2; the plain concrete protection layer 2 is connected with the cross-shaped reinforced concrete column 1 through an anchor bolt 20; one end of the anchor bolt 20 is positioned in the plain concrete protective layer 2, and the other end of the anchor bolt passes through the basalt fiber grating 21 and then is fixed in the cross-shaped reinforced concrete column 1. The basalt fiber grating 21 can increase the compactness of the plain concrete protective layer 2, prevent the plain concrete protective layer 2 from cracking, increase the firm connection degree with the cross-shaped reinforced concrete column body through the anchor bolt 20 and increase the integrity.
Further, the cooling water pipe assembly is positioned on the inner side of the basalt fiber cloth 3.
Further, the basalt fiber cloth 3 is connected with the plain concrete protective layer 2 through high-temperature-resistant inorganic glue 8. Basalt fiber cloth 3 plays thermal-insulated effect, improves the utility model discloses a fire behavior and high temperature resistance. The basalt fiber cloth 3 is distributed in an octagonal shape along the periphery of the reinforced concrete composite column main body, wherein four edges are respectively connected with the outer side walls of the four plain concrete protective layers 2 through high-temperature-resistant inorganic glue 8. The plain concrete protective layer 2 is a cuboid, one surface of the plain concrete protective layer is in contact with the cross-shaped reinforced concrete column 1, and the other opposite surface of the plain concrete protective layer is in contact with the basalt fiber cloth 3.
Further, cooling channel 14 includes along the vertical evenly distributed's of plain concrete protective layer 2 a plurality of, can ensure like this that each position of plain concrete protective layer 2 can both utilize the water-cooling to cool down, improves cooling efficiency, ensures the homogeneity of plain concrete protective layer 2 temperature, prolongs plain concrete protective layer 2's life. Both ends all are equipped with the opening about every cooling passageway 14 for the shower nozzle 6 of the left and right sides of cooling passageway 14 sprays water in cooling passageway 14, improves and sprays efficiency. The horizontal water distribution pipe 5 comprises a plurality of water distribution pipes which are uniformly distributed along the length direction of the longitudinal water pipe 4. The number of the horizontal water distribution pipes 5 on the same side of the longitudinal water pipes 4 is equal to that of the cooling channels 14 arranged on the same plain concrete protective layer 2, and the horizontal water distribution pipes are arranged in a one-to-one correspondence manner. And the spray heads 6 on the horizontal water distribution pipes 5 on the two sides of the longitudinal water pipe 4 respectively extend into the cooling channels 14 on the two adjacent plain concrete protective layers 2. For each cooling channel 14, two ends of the cooling channel are respectively provided with a spray head 6 for spraying water to the interior of the cooling channel, so that the water spraying efficiency is high, and the cooling can be quickly realized.
Further, the longitudinal water pipe 4 and the horizontal water distribution pipe 5 are connected with the cross-shaped reinforced concrete column 1 through a connecting piece 7; the connecting piece 7 comprises a gasket 10 fixed on the cross-shaped reinforced concrete column 1 through a bolt 9 and a lantern ring 12 connected with the gasket 10 through a fixing rod 11. The longitudinal water pipe 4 and the horizontal water distribution pipe 5 are connected with the cross-shaped reinforced concrete column 1 through a connecting piece 7. The connecting pieces 7 are arranged on the cross-shaped reinforced concrete column 1 at intervals in the vertical direction. The lantern ring 12, the fixing rod 11 and the gasket 10 are connected into a whole, a round hole is formed in the gasket 10, and the bolt 9 penetrates through the round hole to be anchored in the cross-shaped reinforced concrete column 1, so that the connecting piece 7 is fixed on the cross-shaped reinforced concrete column 1. The collar 12 is used to secure a longitudinal water pipe or horizontal water distribution pipe. Since the longitudinal water tubes 4 run in the vertical direction, the collars 12 for fixing the longitudinal water tubes 4 also have their central axes in the vertical direction. Since the horizontal manifold 5 runs horizontally, the collar 12 for securing the horizontal manifold 5 also runs horizontally. The water pipe is fixed by arranging the connecting piece 7, the structural stability of the longitudinal water pipe 4 and the horizontal water distribution pipe 5 is improved, and the water pipe is prevented from being bent.
Further, the inlet of the longitudinal water pipe 4 is connected to a water supply pipe 17. The supply of water in the supply pipe 17 is controlled by a control valve 18 at the distal end 19 of the supply pipe, and the valve of the control valve 18 is opened to supply water when necessary.
Furthermore, the plain concrete protection layer 2 is provided with a drainage channel 15 which is longitudinally distributed, and the drainage channel 15 comprises a plurality of drainage pipelines I which are communicated with two adjacent cooling channels 14 and a drainage pipeline II which is communicated with the lowermost cooling channel and an underground drainage pipe 16. The drain pipe 16 is located below the plain concrete protective layer 2. The bottom surface of the cooling channel 14 is low in the middle and high at two sides, and the slope is found from two ends to the middle by 5%. The middle of the bottom of the cooling channel 14 is provided with a via hole for enabling water collected at the bottom of the cooling channel to flow into the drainage channel 15. The drainage channels 15 vertically connect the cooling channels 14, and the drainage channels 15 are arranged to the bottom of the plain concrete protective layer 2 and connected with an underground drainage pipe 16 on the ground; the bottom of the cooling channel 14 is sloped 5% from two ends to the middle, so that water can flow into the drainage channel 15 and be drained away by the drainage pipe 16.
The utility model discloses a working process does:
when using as the high temperature resistant structure post in electrical equipment conflagration laboratory, work as the utility model provides a during plain concrete protective layer 2's temperature risees, the heat can be followed plain concrete protective layer 2 and is transmitted to the interface department of cooling channel 14. When the temperature in the cooling channel 14 rises, the control valve 18 is opened, water is introduced into the longitudinal water pipe 4 from the inlet of the longitudinal water pipe 4, so that the water flows upwards through the longitudinal water pipe 4, and when flowing to each horizontal water distribution pipe 5, the water enters each horizontal water distribution pipe 5 and is sprayed into the corresponding cooling channel 14 through the spray head 6 at the tail end of each horizontal water distribution pipe 5. The fine water beads sprayed out of the spray head 6 are sprayed to each interface of the cooling channel 14, so that a part of heat of the plain concrete protective layer 2 can be taken away, and the temperature of the plain concrete protective layer 2 is reduced. Finally, the water entering each cooling channel 14 is collected to the via hole at the middle position of the bottom of the cooling channel 14, enters the drainage channel 15 below the via hole, and finally flows into the underground drainage pipe 16 from the lowest drainage channel. The utility model discloses have good fire prevention and high temperature resistance.
Compare in traditional square reinforced concrete column, the utility model provides a cross reinforced concrete column outwards extends the cylinder at four side length directions, has increased the cross sectional area of reinforced concrete column, and then has increased the bearing capacity. And simultaneously, the utility model discloses a during the cylinder of basalt fiber cloth restraint cross reinforced concrete column, can form the triangle-shaped space between the cylinder of basalt fiber cloth and cross reinforced concrete column, be convenient for arrange members such as cooling water pipe subassembly. The basalt fiber cloth has good high temperature resistance, can block external flame, and protects components such as cooling water pipe components. The plain concrete protective layer mainly plays a role in heat insulation, and adverse effects of high temperature on the reinforced concrete cylinder are avoided. Through set up circular entrance to a cave and drainage channel in plain concrete protective layer, take away the heat with the rivers, can avoid heat conduction to reinforced concrete cylinder, play the guard action to the cross reinforced concrete cylinder.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (10)
1. The utility model provides a high temperature resistance electrical equipment conflagration laboratory reinforced concrete combination column which characterized in that: the basalt fiber reinforced concrete composite column comprises a reinforced concrete composite column main body and basalt fiber cloth wrapped outside the reinforced concrete composite column main body;
the reinforced concrete combined column main body comprises a cross-shaped reinforced concrete column and plain concrete protection layers arranged on the side walls of the end parts of the cross-shaped reinforced concrete column, which extend outwards; a cooling channel is formed in the plain concrete protective layer; a cooling water pipe assembly is arranged between two adjacent plain concrete protective layers; the cooling water pipe assembly comprises a longitudinal water pipe arranged on one side of the cross joint of the cross reinforced concrete column and two horizontal water distribution pipes which are respectively arranged on two sides of the longitudinal water pipe and are communicated with the longitudinal water pipe; one end of the horizontal water distribution pipe is connected to the longitudinal water pipe, and the other end of the horizontal water distribution pipe is provided with a spray head used for spraying water into the cooling channel.
2. The high-temperature-resistant reinforced concrete combined column for the electrical equipment fire laboratory, which is characterized in that: the cross-shaped reinforced concrete column comprises a first reinforced concrete column and a second reinforced concrete column which are arranged in a cross manner; the side walls of the front end and the rear end of the first reinforced concrete column are respectively connected with a plain concrete protective layer; and the side walls of the left end and the right end of the reinforced concrete column II are respectively connected with a plain concrete protective layer.
3. The high-temperature-resistant reinforced concrete combined column for the electrical equipment fire laboratory, which is characterized in that: and a temperature sensor is arranged in the cooling channel.
4. The high-temperature-resistant reinforced concrete combined column for the electrical equipment fire laboratory, which is characterized in that: a basalt fiber grid is arranged in the plain concrete protective layer; the plain concrete protective layer is connected with the cross-shaped reinforced concrete column through an anchor bolt; one end of the anchor bolt is positioned in the plain concrete protective layer, and the other end of the anchor bolt penetrates through the basalt fiber grating and then is fixed in the cross-shaped reinforced concrete column.
5. The high-temperature-resistant reinforced concrete combined column for the electrical equipment fire laboratory, which is characterized in that: the cooling water pipe assembly is located on the inner side of the basalt fiber cloth.
6. The high-temperature-resistant reinforced concrete combined column for the electrical equipment fire laboratory, which is characterized in that: the basalt fiber cloth is connected with the plain concrete protective layer through high-temperature-resistant inorganic glue.
7. The high-temperature-resistant reinforced concrete combined column for the electrical equipment fire laboratory, which is characterized in that: the cooling channels comprise a plurality of cooling channels which are uniformly distributed along the longitudinal direction of the plain concrete protective layer, and the left end and the right end of each cooling channel are provided with openings; the horizontal water distribution pipes comprise a plurality of horizontal water distribution pipes which are uniformly distributed along the length direction of the longitudinal water pipes, and the number of the horizontal water distribution pipes on the same side of the longitudinal water pipes is equal to that of the cooling channels arranged on the same plain concrete protective layer; and the spray heads on the horizontal water distribution pipes at two sides of the longitudinal water pipe respectively extend into the cooling channels on the two adjacent plain concrete protective layers.
8. The high-temperature-resistant reinforced concrete combined column for the electrical equipment fire laboratory, which is characterized in that: the longitudinal water pipe and the horizontal water distribution pipe are connected with the cross-shaped reinforced concrete column through connecting pieces; the connecting piece includes the gasket of fixing on cross reinforced concrete column through the bolt and the lantern ring that links to each other with the gasket through the dead lever.
9. The high-temperature-resistant reinforced concrete combined column for the electrical equipment fire laboratory, which is characterized in that: the inlet of the longitudinal water pipe is connected with a water supply pipeline.
10. The high-temperature-resistant reinforced concrete combined column for the electrical equipment fire laboratory, which is characterized in that: the plain concrete protective layer is provided with drainage channels which are distributed along the longitudinal direction, and each drainage channel comprises a plurality of drainage pipelines I for communicating two adjacent cooling channels and a drainage pipeline II for communicating the lowermost cooling channel with an underground drainage pipe; the middle of the bottom surface of the cooling channel is low, the two sides of the bottom surface of the cooling channel are high, the slope is 5% from the two ends to the middle of the bottom surface of the cooling channel, and a through hole is formed in the middle of the bottom of the cooling channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020662422.6U CN212534804U (en) | 2020-04-27 | 2020-04-27 | High-temperature-resistant reinforced concrete combined column for fire laboratory of electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020662422.6U CN212534804U (en) | 2020-04-27 | 2020-04-27 | High-temperature-resistant reinforced concrete combined column for fire laboratory of electrical equipment |
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| Publication Number | Publication Date |
|---|---|
| CN212534804U true CN212534804U (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020662422.6U Active CN212534804U (en) | 2020-04-27 | 2020-04-27 | High-temperature-resistant reinforced concrete combined column for fire laboratory of electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212534804U (en) |
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2020
- 2020-04-27 CN CN202020662422.6U patent/CN212534804U/en active Active
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