Fireproof and anti-explosion integrated plugging structure for valve side sleeve hole of converter transformer in valve hall

Abstract

The utility model discloses a fireproof and anti-explosion integrated plugging structure for a valve side sleeve hole of a converter transformer in a valve hall, and relates to the technical field of converter station design. The frame structure comprises a main body frame module and an assembling plate, the main body frame module comprises a plurality of keels which are spliced into the frame structure, and the assembling plate comprises an ultra-high performance concrete anti-explosion plate assembly, a fiber reinforced calcium silicate fireproof plate assembly and a glass magnesium plate assembly; the keels are located on the inner side of the glass magnesium board assembly, and cavities between the adjacent keels are filled with aluminum silicate fireproof cotton. The construction mode that the modular keels are assembled on site and the plates are compounded in a factory according to needs is adopted, the weight of a single plate can be greatly reduced, the plates can be manually carried and installed, installation can be completed without assistance of hoisting machinery, the construction difficulty is effectively reduced, the construction period is effectively shortened, and economic losses caused by power failure construction of the converter station are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the converter station design technical field more specifically, it is a valve hall converter transformer valve side bushing hole fireproof blastproof integrated plugging structure. BACKGROUND

[0002] With the economic development of our country, the industrial and residential electricity demand is increasing, in order to meet the growing demand for electricity, the voltage level of converter station is rising, and the safety problem of converter transformer is paid more and more attention by people, at present, there are some fireproof blastproof integrated schemes, but there are problems of heavy weight, construction difficulty, complex structure and too many processes, and the plugging problem of converter bushing wall penetration in valve hall of converter station has not been solved well.

[0003] The existing converter transformer valve side bushing wall hole fireproof blastproof integrated plugging adopts the scheme of fireproof blastproof integrated plugging of super high performance concrete as main material, and is assembled by super high performance prefabricated version prefabricated in factory, the ribbed cavity is used in the super high performance concrete prefabricated plate, and the blastproof and fireproof system is formed together, because the self weight of super high performance concrete is large, and the amount is more, so the weight of prefabricated plate is large, and the installation must be assisted by machinery, thereby causing the inconvenience of construction, and the protection difficulty of converter valve side bushing during installation is large.

[0004] Therefore, it is necessary to develop a valve hall converter transformer valve side bushing hole fireproof blastproof integrated plugging structure which is more convenient to construct. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the insufficient of the prior art, and provides a valve hall converter transformer valve side bushing hole fireproof blastproof integrated plugging structure.

[0006] In order to realize the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] Compared with the prior art, the utility model has the following advantages: the valve hall converter transformer valve side bushing hole fireproof blastproof integrated plugging structure is characterized by comprising a main frame module and an assembled plate, the main frame module comprises a plurality of keels spliced into a frame structure, the assembled plate comprises a super high performance concrete blastproof plate assembly, a fiber reinforced calcium silicate fireproof plate assembly located on the inner side of the super high performance concrete blastproof plate assembly and a glass magnesium plate assembly located in the fiber reinforced calcium silicate fireproof plate assembly.

[0008] The plurality of keels are located on the inner side of the glass magnesium plate assembly, and the cavity between adjacent keels is filled with aluminum silicate fireproof cotton.

[0009] The main frame module and the assembled plate are provided with a hole matched with the hole at the valve hall converter transformer valve side bushing hole.

[0010] In the above technical solution, the tail tip of the first self-tapping screw group penetrates through the ultra-high performance concrete blast plate assembly, the fiber reinforced calcium silicate fireproof plate assembly and the glass magnesium plate assembly in sequence and is located in the keel.

[0011] In the above technical solution, the tail tip of the second self-tapping screw group penetrates through the fiber reinforced calcium silicate fireproof plate assembly and the glass magnesium plate assembly in sequence and is located in the keel.

[0012] In the above technical solution, the ultra-high performance concrete blast plate assembly comprises a first ultra-high performance concrete blast plate and a second ultra-high performance concrete blast plate arranged symmetrically; the fiber reinforced calcium silicate fireproof plate assembly comprises a first fiber reinforced calcium silicate fireproof plate and a second fiber reinforced calcium silicate fireproof plate arranged symmetrically; the glass magnesium plate assembly comprises a first glass magnesium plate and a second glass magnesium plate arranged symmetrically, the first ultra-high performance concrete blast plate is attached to the first fiber reinforced calcium silicate fireproof plate, and the second ultra-high performance concrete blast plate is attached to the second fiber reinforced calcium silicate fireproof plate; the first fiber reinforced calcium silicate fireproof plate and the first glass magnesium plate are mutually compounded, and the second fiber reinforced calcium silicate fireproof plate and the second glass magnesium plate are mutually compounded.

[0013] In the above technical solution, the assembled plate further comprises ceramic fiber paper, and the first glass magnesium plate and the second glass magnesium plate are both provided with ceramic fiber paper between the keel and the aluminum silicate fireproof cotton.

[0014] In the above technical solution, the first ultra-high performance concrete blast plate and the second ultra-high performance concrete blast plate are both provided with a stainless steel surface layer on the front and back surfaces.

[0015] In the above technical solution, when the plurality of main frame modules are assembled, the plurality of main frame modules are connected by bolts to form an integral frame, and the joints between the assembled plate and the plate are treated by staggered joints.

[0016] In the above technical solution, the main frame module is connected and fixed with the reinforced concrete firewall of the valve hall by the expansion bolt or the embedded part welding mode.

[0017] 1) More convenient construction: the modular keel is assembled on site, and the plate is compounded in the factory according to demand, which can greatly reduce the weight of the single plate, realize manual carrying and installation of the plate, complete the installation without the aid of lifting machinery, effectively reduce the construction difficulty and construction period, and reduce the economic loss caused by the power station power failure construction.

[0018] 2) better fireproof ability: the material used in the utility model is non-combustible material, the fireproof effect is better than the existing material combination scheme, and after forming a plugging structure, it can resist high temperature of 1100 DEG C and meet the 4-hour fire resistance limit under the standard of HC (hydrocarbon) temperature rise curve.

[0019] 3) better blast resistance: the stainless steel keel of the utility model is used as a stress main frame, the both sides of the main frame adopt perforated stainless steel surface layer super high performance concrete blast plate with energy absorption and shock absorption capacity to directly bear the explosion impact force, and the explosion load is transmitted to the stainless steel keel to resist explosion overpressure; the main frame + blast plate structure of the utility model can bear explosion overpressure of more than 550kPa, and has better blast resistance.

[0020] 4) compared with the traditional plugging scheme, the utility model has better fireproof ability, stronger blast resistance and more convenient construction, and remarkable optimization effect is achieved, which is the innovation and breakthrough of the valve hall converter transformer valve side sleeve hole plugging design scheme. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the elevation layout of the utility model.

[0022] Figure 2 is the layout of the main frame module.

[0023] Figure 3 is the sectional view of the utility model.

[0024] Among them, 100-main frame module, 110-keel, 200-assembled plate, 210-super high performance concrete blast plate assembly, 211-first super high performance concrete blast plate, 212-second super high performance concrete blast plate, 220-fiber reinforced calcium silicate fireproof plate assembly, 221-first fiber reinforced calcium silicate fireproof plate, 222-second fiber reinforced calcium silicate fireproof plate, 230-magadi board assembly, 231-first magadi board, 232-second magadi board, 240-aluminum silicate fireproof cotton, 250-ceramic fiber paper, 310-first self-tapping screw group, 320-second self-tapping screw group. DETAILED DESCRIPTION

[0025] The implementation of the utility model will be described in detail below with reference to the drawings, but they do not constitute a limitation on the utility model, but only serve as an example. At the same time, through the description, the advantages of the utility model will become clearer and easier to understand.

[0026] As shown in the drawings, the valve hall converter transformer valve side bushing hole fireproof explosion-proof integrated plugging structure is characterized by comprising a main frame module 100 and an assembled plate 200, the main frame module 100 comprises a plurality of keels 110 spliced into a frame structure, and the assembled plate 200 comprises an ultra-high performance concrete explosion-proof plate assembly 210, a fiber-reinforced calcium silicate fireproof plate assembly 220 located on the inner side of the ultra-high performance concrete explosion-proof plate assembly 210, and a glass magnesium plate assembly 230 located in the fiber-reinforced calcium silicate fireproof plate assembly 220.

[0027] A plurality of the keels 110 are located on the inner side of the glass magnesium plate assembly 230, and the cavities 111 between adjacent keels 110 are filled with aluminum silicate fireproof cotton 240.

[0028] The main frame module 100 and the assembled plate 200 are provided with holes matched with the valve hall converter transformer valve side bushing hole.

[0029] The tail tips of the first self-tapping screw group 310 sequentially penetrate the ultra-high performance concrete explosion-proof plate assembly 210, the fiber-reinforced calcium silicate fireproof plate assembly 220 and the glass magnesium plate assembly 230 and are located in the keel 110.

[0030] The tail tips of the second self-tapping screw group 320 sequentially penetrate the fiber-reinforced calcium silicate fireproof plate assembly 220 and the glass magnesium plate assembly 230 and are located in the keel 110.

[0031] The ultra-high performance concrete explosion-proof plate assembly 210 comprises symmetrically arranged first and second ultra-high performance concrete explosion-proof plates 211 and 212, the fiber-reinforced calcium silicate fireproof plate assembly 220 comprises symmetrically arranged first and second fiber-reinforced calcium silicate fireproof plates 221 and 222, and the glass magnesium plate assembly 230 comprises symmetrically arranged first and second glass magnesium plates 231 and 232, the first ultra-high performance concrete explosion-proof plate 211 is attached to the first fiber-reinforced calcium silicate fireproof plate 221, the second ultra-high performance concrete explosion-proof plate 212 is attached to the second fiber-reinforced calcium silicate fireproof plate 222, the first fiber-reinforced calcium silicate fireproof plate 221 is compounded with the first glass magnesium plate 231, and the second fiber-reinforced calcium silicate fireproof plate 222 is compounded with the second glass magnesium plate 232.

[0032] The assembled plate 200 further comprises ceramic fiber paper 250, and the ceramic fiber paper 250 is arranged between the first glass magnesium plate 231 and the keel 110 and the aluminum silicate fireproof cotton 240 and between the second glass magnesium plate 232 and the keel 110 and the aluminum silicate fireproof cotton 240.

[0033] The first and second ultra-high performance concrete explosion-proof plates 211 and 212 are provided with stainless steel surface layers on both front and back surfaces.

[0034] When the plurality of main frame modules 100 are assembled, the plurality of main frame modules 100 are connected by bolts to form an overall frame, and the joints between the assembled plate blocks 200 are treated by staggered joints; the joints are blocked by the keels 110 or other materials below the keels 110, and do not form through joints.

[0035] The main frame modules 100 are connected and fixed with the reinforced concrete firewall of the valve hall by means of expansion bolts or embedded welding; the gravity load and explosion load borne by the entire sealing structure are transmitted to the reinforced concrete firewall of the valve hall.

[0036] In actual use, the main frame modules 100 can be freely divided in terms of the number and size of the modules according to needs, the main frame modules 100 are assembled in the factory and then transported to the site for a small amount of assembly, and the assembled plate blocks 200 are assembled on site after the assembly of the main frame modules 100 is completed.

[0037] Each main frame module 100 is welded by a plurality of stainless steel keels 110 in the factory, and the plurality of main frame modules 100 are assembled into an overall frame by stainless steel bolts after being transported to the construction site.

[0038] After the assembly of the main frame modules 100 is completed, the cavities formed between the keels 110 are filled with aluminum silicate fireproof cotton 240, and ceramic fiber paper 250 is used to cover the front and back surfaces of the main frame modules 100 after the filling is completed to seal the aluminum silicate fireproof cotton 240.

[0039] The first fiber-reinforced calcium silicate fireproof plate 221 and the first glass magnesium plate 231, and the second fiber-reinforced calcium silicate fireproof plate 222 and the second glass magnesium plate 232 are mechanically pressed together in the factory, and are assembled according to the positions of the keels 110 on the construction site. The first fiber-reinforced calcium silicate fireproof plate 221 and the first glass magnesium plate 231, and the second fiber-reinforced calcium silicate fireproof plate 222 and the second glass magnesium plate 232 are fixed with the keels 110 by the second self-tapping screw set 320.

[0040] The first ultra-high performance concrete blast-resistant plate 211 and the second ultra-high performance concrete blast-resistant plate 212 are fixed with the keels 110 by the first self-tapping screw set 310 on the construction site, and completely cover the fiber-reinforced calcium silicate fireproof plate assembly 220 and the glass magnesium plate assembly 230.

[0041] The metal components of the ultra-high performance concrete blast-resistant plate assembly 210 and the keels 110 are made of non-magnetic stainless steel, which has excellent electromagnetic shielding effect, and can be connected with the internal metal wall of the valve hall through a conductor to ensure the complete electromagnetic shielding of the valve hall.

[0042] The inner and outer surfaces of the utility model are not protruding from the inner and outer surfaces of the valve hall steel reinforced fireproof wall, the indoor side can ensure to meet the requirement of the live-line distance of the internal equipment of the valve hall, and the outdoor side can avoid the hidden trouble of the obstruction caused by the installation of other equipment pipelines outside the fireproof wall.

[0043] The size of each main frame module 100 can be determined according to the size of the hole on the valve hall fireproof wall and the positioning of the valve side bushing of the converter transformer in the actual project, after the welding and assembly of each main frame module 100 are completed in the factory, the main frame modules 100 are assembled together according to the assembly sequence by using bolts at the construction site, and the overall stress frame is formed.

[0044] The ultra-high performance concrete anti-explosion plate assembly 210 is completed in the factory, and no wet operation is performed after leaving the factory, so that the construction progress of the project is effectively improved.

[0045] Based on the valve side bushing hole of the converter transformer of the high-end valve hall of the actual ±800kV extra-high voltage converter station project, a full-size (5m*5m) model of the utility model is made.

[0046] Then, the full-size model of the utility model is subjected to explosion test and fire resistance test.

[0047] According to the explosion test record, after the utility model is subjected to the impact wave with the peak pressure of 550kPa, the fireproof plate on the blast-facing surface is cracked, the blast-facing surface has no obvious change, and the integrated plugging structure remains complete; after the explosion test is completed, the National Civilian Explosive Material Quality Inspection and Detection Center of the Chemical Material Test Center of Nanjing University of Science and Technology issues an inspection report, according to the report conclusion, the anti-explosion carrying capacity of the valve side bushing hole anti-explosion and fire integrated plugging designed by the utility model is not less than 550kPa.

[0048] In the fire resistance test, the test piece has no smoke leakage and fire jumping phenomenon throughout the 4-hour test, and no obvious visible change occurs on the backfire surface of the plugging system except for slight concave deformation. According to the test result, all indexes meet the provisions of the detection standard, that is, on the fire resistance integrity, no flame appears on the back surface of the test piece, the cotton pad is not ignited, and the test piece does not lose the fire resistance integrity; on the fire resistance and heat insulation, the maximum temperature rise of the backfire surface of the plugging material around the through object is 92.6℃, the maximum temperature rise of the surface of the backfire end of the through object is 282.9℃, and the maximum temperature rise of the surface of the backfire surface frame is 82.5℃. No fire penetration and smoke leakage occurs during the test, the average temperature rise of the backfire surface is 77.6℃, which is less than the specification limit of 140℃, the maximum temperature rise is less than 180℃, and the requirements of integrity and heat insulation are met.

[0049] After the fire resistance test is completed, the national fire and flame-retardant product quality inspection and detection center (Shandong) issues an inspection report, according to the report conclusion, the fire resistance limit of the explosion-proof and fireproof integrated plugging of the valve hall fireproof wall valve side sleeve hole opening designed by the utility model is 4.0h.

[0050] Other unexplained parts belong to the prior art.

Claims

1. A valve hall converter transformer valve side bushing hole fireproof and explosion-proof integrated plugging structure, characterized in that: The main frame module (100) comprises a plurality of keels (110) spliced into a frame structure, and the assembly plate block (200) comprises an ultra-high performance concrete blast-resistant plate assembly (210), a fiber-reinforced calcium silicate fireproof plate assembly (220) located inside the ultra-high performance concrete blast-resistant plate assembly (210), and a glass magnesium plate assembly (230) located inside the fiber-reinforced calcium silicate fireproof plate assembly (220). A plurality of the keels (110) are located inside the glass magnesium plate assembly (230), and the cavities (111) between adjacent keels (110) are filled with aluminum silicate fireproof cotton (240). The main frame module (100) and the assembly plate block (200) are provided with a matching opening at the valve hall converter transformer valve side sleeve hole opening.

2. The valve hall converter transformer valve side bushing hole fireproof explosion-proof integrated plugging structure according to claim 1, characterized in that: The tail tips of the first self-tapping screw group (310) sequentially penetrate the ultra-high performance concrete blast-resistant plate assembly (210), the fiber-reinforced calcium silicate fireproof plate assembly (220), and the glass magnesium plate assembly (230) and are located inside the keel (110).

3. The valve hall converter transformer valve side bushing hole fireproof explosion-proof integrated plugging structure according to claim 2, characterized in that: The tail tips of the second self-tapping screw group (320) sequentially penetrate the fiber-reinforced calcium silicate fireproof plate assembly (220) and the glass magnesium plate assembly (230) and are located inside the keel (110).

4. The valve hall converter transformer valve side bushing hole fireproof explosion-proof integrated plugging structure according to claim 1, characterized in that: The ultra-high performance concrete blast-resistant plate assembly (210) comprises a first ultra-high performance concrete blast-resistant plate (211) and a second ultra-high performance concrete blast-resistant plate (212) arranged symmetrically, the fiber-reinforced calcium silicate fireproof plate assembly (220) comprises a first fiber-reinforced calcium silicate fireproof plate (221) and a second fiber-reinforced calcium silicate fireproof plate (222) arranged symmetrically, and the glass magnesium plate assembly (230) comprises a first glass magnesium plate (231) and a second glass magnesium plate (232) arranged symmetrically, the first ultra-high performance concrete blast-resistant plate (211) is attached to the first fiber-reinforced calcium silicate fireproof plate (221), the second ultra-high performance concrete blast-resistant plate (212) is attached to the second fiber-reinforced calcium silicate fireproof plate (222), the first fiber-reinforced calcium silicate fireproof plate (221) and the first glass magnesium plate (231) are compounded with each other, and the second fiber-reinforced calcium silicate fireproof plate (222) and the second glass magnesium plate (232) are compounded with each other.

5. The valve hall converter transformer valve side bushing hole fireproof explosion-proof integrated plugging structure according to claim 4, characterized in that: The assembly plate block (200) further comprises ceramic fiber paper (250), and the ceramic fiber paper (250) is arranged between the first glass magnesium plate (231) and the keel (110) and the aluminum silicate fireproof cotton (240) and between the second glass magnesium plate (232) and the keel (110) and the aluminum silicate fireproof cotton (240).

6. The valve hall converter transformer valve side bushing hole fireproof explosion-proof integrated plugging structure according to claim 4, characterized in that: The first ultra-high performance concrete blast-resistant plate (211) and the second ultra-high performance concrete blast-resistant plate (212) have stainless steel surface layers on both front and back surfaces.

7. The valve hall converter transformer valve side bushing hole fireproof explosion-proof integrated plugging structure according to claim 1, characterized in that: When a plurality of the main frame modules (100) are assembled, the plurality of main frame modules (100) are connected by bolts to form an overall frame, and the joints between the assembly plate blocks (200) and the plate assembly plate blocks (200) are treated by staggered joints.

8. The valve hall converter transformer valve side bushing hole fireproof explosion-proof integrated plugging structure according to claim 1, characterized in that: The main frame module (100) is connected and fixed with the reinforced concrete firewall of the valve hall by expansion bolts or pre-embedded welding.

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