CN213742451U

CN213742451U - Prevent hot wall in station valve room of transformation

Info

Publication number: CN213742451U
Application number: CN202021491779.9U
Authority: CN
Inventors: 唐云; 杨宝山; 陈杰; 唐浩
Original assignee: Zisen Environmental Technology Co ltd
Current assignee: Zisen Environmental Technology Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-07-20
Anticipated expiration: 2030-07-24

Abstract

The invention discloses a firewall for a valve hall of a reconstruction station, which adopts a composite structural plate, does not need to dismantle the existing metal structure rock wool composite fireproof plate, and is additionally provided with a plugging reinforcing structure at the inner side of the valve hall, wherein the plugging reinforcing structure comprises a keel, a heat insulation layer and a fireproof layer. When fire occurs inside the fire-resistant layer, the flame spread and propagation speed is slowed down by the fire-resistant layer, and the flame-retardant protection effect is achieved; the heat preservation can collect unnecessary heat, and in good time steady release plays excessive effect, plays the guard action to current metal construction rock wool composite fire board, finally promotes the limit of fire resistance, can reach limit of fire resistance 4h (hydrocarbon curve). Meanwhile, the stainless steel keel is connected by using bolts, so that the installation and the disassembly of engineering construction are facilitated.

Description

Prevent hot wall in station valve room of transformation

Technical Field

The invention relates to a firewall for a valve hall, in particular to a firewall for a valve hall of a reconstruction station.

Background

The national grid company enterprise standard Q/GDW11408-2015 guide rule for design of extra-high voltage direct current engineering valve hall of +/-800 kV and above stipulates that the combustion performance and the fire resistance limit of the valve hall wall enclosure material accord with corresponding stipulations in the standard, and the fire resistance limit of a firewall among a converter transformer, an oil immersed smoothing reactor and a control building is at least 3.00 h. The hole part of the converter transformer valve side sleeve penetrating through the firewall between the valve hall and the converter transformer is subjected to fireproof plugging by adopting a PAROC structure rock wool composite fireproof plate meeting the requirement of 3.00h fire endurance.

In the prior art, when the converter transformer and the oil immersed smoothing reactor are directly arranged in the valve hall by adopting a sleeve, the corresponding wall body of the valve hall is a firewall, and the fire resistance limit needs to meet 4.0 h. The converter transformer plugging of the existing valve hall is a rock wool composite fire-proof plate (PAROC structure rock wool composite fire-proof plate) with a metal structure of 150mm thickness. The prior art sheet member cannot reach the fire limit of 4 hours. In order to improve the fire resistance of the valve hall plugging system, particularly the fire endurance performance of the existing valve hall, the technical problem to be solved by the technical personnel in the field is urgent.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the rock wool composite fireproof plate with the existing metal structure is not dismantled, and the technical problem that the fire resistance limit effect of the existing valve hall is not ideal is solved.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the utility model provides a reform transform station valve room prevents hot wall, adopts composite structure panel, characterized by: newly adding a plugging reinforcing structure on the inner side of the valve hall, and newly adding a plugging reinforcing structure on the inner side of the valve hall, wherein the plugging reinforcing structure comprises a keel, a heat insulation layer and a fire-resistant layer; the heat-insulating layer and the fire-resistant layer are sequentially arranged on the metal structure rock wool composite fire-proof plate; inorganic binder can be arranged among the metal structure rock wool composite fireproof plate, the heat preservation layer and the fire-resistant layer. The fossil fragments with metal construction rock wool composite fireproof plate uses bolted connection, but not only is limited to bolted connection, also can use other detachable connected mode among the prior art.

Further, the keel is a stainless steel keel.

Further, the heat-insulating layer is filled in a cavity structure formed by the stainless steel keel.

Furthermore, the fire-resistant layer and the stainless steel keel are connected by stainless steel self-tapping nails.

Furthermore, the heat-insulating layer is a non-combustible material and is a material with the heat conductivity coefficient less than or equal to 0.12.

Furthermore, the heat-insulating layer is an aluminum silicate needled blanket which is densely packed in a cavity structure formed by the stainless steel keel.

Further, the fire-resistant layer is a non-combustible plate and comprises a fire-resistant coating arranged on the surface of the non-combustible plate.

Further, the noncombustible board can be selected from a vermiculite fireproof board, a perlite fireproof board, a floating bead sound absorption board and the like.

Further, the fire-resistant layer and the stainless steel keel are combined by stainless steel self-tapping screws.

Furthermore, the reinforcing structure in the technical scheme is not limited to the insulating layer and the fire-resistant layer, and the insulating layer and the multiple fire-resistant layers can be of a composite structure according to the actual fire resistance level requirement.

Has the advantages that:

the invention provides a transformed station valve hall firewall, wherein a plugging reinforcing structure is additionally arranged on an existing rock wool composite fireproof plate with a metal structure without removing the existing rock wool composite fireproof plate. When fire occurs inside the fire-resistant layer, the flame spread and propagation speed is slowed down by the fire-resistant layer, and the flame-retardant protection effect is achieved; the heat preservation can collect unnecessary heat, and in good time steady release plays excessive effect, plays the guard action to current metal construction rock wool composite fire board, finally promotes the limit of fire resistance, can reach limit of fire resistance 4h (hydrocarbon curve). Meanwhile, the stainless steel keel is connected by using bolts, so that the installation and the disassembly of engineering construction are facilitated.

Description of the drawings:

FIG. 1: the invention improves the structural front view schematic diagram of the fire wall of the station valve hall;

FIG. 2: the invention discloses a sectional view of a firewall structure of a valve hall of a reconstruction station.

Wherein, the names corresponding to the reference numbers are:

1-original metal structure rock wool composite fireproof plate, 2-stainless steel keel, 3-silicate needled blanket, 4-floating bead plate and 5-fireproof paint.

Detailed Description

The present invention will be further explained below for better understanding of the objects, technical solutions and technical effects of the present invention, but the scope of the present invention is not limited to the following examples.

Example 1

As shown in fig. 1-2, the firewall for the valve hall of the reforming station of the invention is additionally provided with a plugging reinforcing structure on an original rock wool composite fireproof plate 1 with a metal structure, wherein the plugging reinforcing structure comprises a stainless steel keel 2, an insulating layer 3 and a fireproof layer 4; the heat-insulating layer and the fire-resistant layer are sequentially arranged on the original metal structure rock wool composite fire-proof plate 1; and the two side surfaces of the heat-insulating layer are provided with inorganic binders which are respectively connected with the rock wool composite fire-proof plate 1 with the original metal structure and the fire-proof layer.

Stainless steel fossil fragments 2 with original metal construction rock wool composite fire board 1 uses bolted connection, but not only is limited to bolted connection, also can use other connection methods of dismantling among the prior art.

The heat-insulating layer is filled in a cavity structure formed by the stainless steel keel.

The fire-resistant layer and the stainless steel keel are connected by stainless steel self-tapping nails.

Example 2

The same structure as in example 1, a fireproof coating layer 5 was provided on the surface of the refractory layer.

Example 3

The structure is the same as that of the embodiment 2, and the refractory layer is a multi-layer refractory layer structure.

Example 4

The structure is the same as that of the embodiment 1, the fire-resistant layer is a floating bead sound-absorbing plate 4, and the floating bead sound-absorbing plate 4 is a non-fiber porous sound-absorbing material composed of fire-resistant aggregate and fire-resistant adhesive.

The main raw material adopted by the refractory aggregate is floating beads, and the floating beads form certain particle strength due to surface vitrification, have stable physical and chemical properties, strong aging resistance and weather resistance, and have excellent heat insulation, fire prevention and sound absorption properties.

The fire-resistant binder is a phosphate-based inorganic bonding system, and has excellent fire resistance. The size and arrangement mode of internal pores can be determined by accurately regulating and controlling the particle size, proportion and polymerization mode of the particles, so that the fire resistance of the floating bead sound absorption plate is improved.

The specific physical parameters of the floating bead sound absorption plate are shown in table 1:

TABLE 1 Floating bead acoustical panel physical parameters

Physical parameters	Description of parameters
		Bulk density	0.68g/cm³
Areal density (20mm)	About 13.6kg/m²
		Flexural strength	≥1MPa
Fire resistance	Grade A non-combustible

Example 5

The structure is the same as that of the embodiment 1, the heat-insulating layer is an aluminum silicate needled blanket 3, and the aluminum silicate needled blanket 3 is a heat-insulating refractory material formed by needling special aluminum silicate long fibers by using aluminum silicate as a raw material and adopting a resistance furnace process.

The performance parameters of the aluminum silicate needle-punched carpet are shown in table 2:

TABLE 2 aluminium silicate needled carpet Performance parameters

The above examples are intended to be illustrative of possible embodiments of the invention and are not intended to limit the scope of the invention, which is intended to be covered by the claims unless the invention is modified or practiced in a manner that is equivalent to the practice of the invention or otherwise applied to a fire fighting environment other than that of the converter, but which is also intended to meet the fire fighting requirements.

Claims

1. The utility model provides a reform transform station valve room prevents hot wall, adopts composite structure panel, characterized by: newly adding a plugging reinforcing structure on the inner side of the valve hall, wherein the plugging reinforcing structure comprises a keel, a heat insulation layer and a fire-resistant layer; the heat-insulating layer and the fire-resistant layer are sequentially arranged on the metal structure rock wool composite fire-proof plate; inorganic binder can be arranged among the metal structure rock wool composite fireproof plate, the heat insulation layer and the fire-resistant layer; the keel and the metal structure rock wool composite fireproof plate are detachably connected.

2. The rebuilt station valve hall firewall according to claim 1, wherein: the detachable connection is a bolt connection.

3. The rebuilt station valve hall firewall according to claim 1, wherein: the keel is a stainless steel keel.

4. The rebuilt station valve hall firewall according to claim 1, wherein: the heat-insulating layer is filled in a cavity structure formed by the keel.

5. The rebuilt station valve hall firewall according to claim 1, wherein: the fire-resistant layer and the keel are connected by stainless steel self-tapping nails.

6. The rebuilt station valve hall firewall according to claim 1, wherein: the heat-insulating layer is made of a non-combustible material and is made of a material with a heat conductivity coefficient less than or equal to 0.12.

7. The rebuilt station valve hall firewall according to claim 1, wherein: the heat-insulating layer is an aluminum silicate needled blanket.

8. The rebuilt station valve hall firewall according to claim 1, wherein: the fire-resistant layer is a non-combustible plate.

9. The rebuilt station valve hall firewall according to claim 1, wherein: and the fireproof coating is arranged on the surface of the fireproof layer.

10. The rebuilt station valve hall firewall according to claim 8, wherein: the noncombustible board can be any one or the combination of a vermiculite fireproof board, a perlite fireproof board and a floating bead sound absorption board.