阅读说明：本技术 一种双层双螺旋冷却热风阀阀板及其工作方法 (Double-layer double-helix cooling hot blast valve plate and working method thereof ) 是由 曹怿男 游仁杰 徐斌 李�浩 韦凯励 赵若竹 叶紫铃 胡依佳 张珊珊 苏雅璇 于 2020-05-28 设计创作，主要内容包括：本发明涉及一种双层双螺旋冷却热风阀阀板,包括阀板本体,阀板本体内部经隔层板分隔出相邻的上层水道与下层水道,上层水道与下层水道之间经连通轴相连通,上层水道与下层水道均由外往内依次包括外水圈、内围板、双螺旋冷却水道、连通轴,其中：同层外水圈与内围板之间均形成外环水道,同层外环水道与双螺旋冷却水道的外端均经导流孔连通、双螺旋冷却水道的内端均与连通轴连通；上层水道的外环水道连接进水口,下层水道的外环水道连接出水口,同层进水口与导流孔之间的外环水道上、同层出水口与导流孔之间的外环水道上均设有挡水板。克服了原先冷却水用量大、冷却效率低的缺点,大大提高了热风阀的质量和使用寿命。(The invention relates to a double-layer double-helix cooling hot blast valve plate, which comprises a valve plate body, wherein the inside of the valve plate body is divided into an upper water channel and a lower water channel which are adjacent through a division plate, the upper water channel and the lower water channel are communicated through a communicating shaft, and the upper water channel and the lower water channel respectively comprise an outer water ring, an inner coaming, a double-helix cooling water channel and a communicating shaft from outside to inside, wherein: outer ring water channels are formed between the outer water ring and the inner surrounding plate on the same layer, the outer ends of the outer ring water channels and the double-spiral cooling water channels on the same layer are communicated through the flow guide holes, and the inner ends of the double-spiral cooling water channels are communicated with the communicating shaft; the outer ring water channel of the upper layer water channel is connected with the water inlet, the outer ring water channel of the lower layer water channel is connected with the water outlet, and water baffles are arranged on the outer ring water channel between the water inlet and the diversion hole on the same layer and the outer ring water channel between the water outlet and the diversion hole on the same layer. The defects of large cooling water consumption and low cooling efficiency in the prior art are overcome, and the quality and the service life of the hot blast valve are greatly improved.)

1. The utility model provides a double-deck double helix cooling hot-blast valve plate which characterized in that: including the valve plate body, adjacent upper water course and lower floor's water course are separated to the valve plate body inside through the interlayer board, are linked together through the communicating shaft between upper water course and the lower floor's water course, and upper water course and lower floor's water course are by outer water ring, interior bounding wall, double helix cooling water course, communicating shaft of down including in proper order, wherein: outer ring water channels are formed between the outer water ring and the inner surrounding plate on the same layer, the outer ends of the outer ring water channels and the double-spiral cooling water channels on the same layer are communicated through the flow guide holes, and the inner ends of the double-spiral cooling water channels are communicated with the communicating shaft; the outer ring water channel of the upper layer water channel is connected with the water inlet, the outer ring water channel of the lower layer water channel is connected with the water outlet, and water baffles are arranged on the outer ring water channel between the water inlet and the diversion hole on the same layer and the outer ring water channel between the water outlet and the diversion hole on the same layer.

2. The double-deck double helix cooling hot blast valve plate of claim 1, characterized in that: the end face of the upper-layer water channel seals the end faces of the outer-ring water channel and the double-helix cooling water channel through the upper cover plate, and the end face of the lower-layer water channel seals the end faces of the outer-ring water channel and the double-helix cooling water channel through the lower cover plate.

3. The double-deck double helix cooling hot blast valve plate of claim 1, characterized in that: the double-helix cooling water channels are spirally connected to the communicating shaft from the diversion holes from outside to inside, and the same adjacent side is shared by the double-helix cooling water channels on the same layer.

4. The double-deck double helix cooling hot blast valve plate of claim 1, characterized in that: both ends of the communicating shaft are closed, and the peripheral parts of both ends of the communicating shaft are provided with through holes communicated with the inner ends of the double-helix cooling water channels on the same layer.

5. The double-deck double helix cooling hot blast valve plate of claim 1, characterized in that: the peripheral parts of the water inlet and the water outlet are fixedly provided with rib plates which are connected with the valve plate body into a whole.

6. The double-deck double helix cooling hot blast valve plate of claim 1, characterized in that: the periphery of the valve plate body is fixedly provided with a plurality of lifting lugs and a support.

7. The working method of the double-layer double-helix cooling hot blast valve plate according to any one of claims 1 to 6 is characterized by comprising the following steps: cooling water flows in from the water inlet, flows through the outer ring water channel of the upper layer water channel, cools the outer water ring and the sealing surface of the valve plate, then enters the double-helix cooling water channel of the upper layer water channel through the set flow guide holes, flows to the middle communicating shaft, enters the double-helix cooling water channel of the lower layer water channel, flows through the double-helix cooling water channel and the outer ring water channel of the lower layer water channel from inside to outside, and is finally discharged from the water outlet; the novel water channel circulation structure is applied, important parts of the outer water ring and the sealing surface are cooled in advance, double-layer double helix is adopted in the valve plate body, the double-layer double helix is adopted from outside to inside, from top to bottom and from inside to outside, heat transfer is effectively reduced, the defects of large cooling water consumption and low cooling efficiency in the prior art are overcome, and the quality and the service life of the hot blast valve are greatly improved.

Technical Field

The invention relates to a double-layer double-helix cooling hot blast valve plate and a working method thereof.

Background

The hot blast valve is installed on the hot blast pipe of the blast furnace hot blast stove system and is used for controlling the on-off of the pipeline in the combustion period and the air supply period of the hot blast stove. The hot blast valve plate is a key component for forming the hot blast valve. Because the hot blast valve is washed by high-temperature hot air (900 ℃ -1100 ℃) and acted by alternating heat load for a long time in the working process, the heat stability and the quality of the hot blast valve directly influence the overall quality of the valve. The valve plate of the hot blast valve is the main part for taking away heat, so that the performance, the service life and the like of the valve are directly influenced by the quantity of the taken away heat. At present, a valve plate of a hot blast valve generally comprises a cooling water inlet and outlet pipe arranged on the valve plate in parallel and two valve plate sealing port rings arranged on the valve plate, two panels and a water-stop plate arranged on one side of the panel are opposite to the two valve plate sealing port rings, and fire-resistant heat-insulating layers are arranged on two sides of the water-stop plate. In practical application, because the sealing surface is an integral forging piece and is in a welding structure, the sealing surfaces of the double-sided plate and the spigot ring of the integral valve plate are all leaked outside the fireproof heat-insulating layer, the whole waterproof valve plate is stressed by high-temperature thermal stress, the heat loss is large under high-temperature baking, and the welded junction is easy to fatigue crack.

Disclosure of Invention

In view of the defects of the prior art, the technical problem to be solved by the invention is to provide a double-layer double-helix cooling hot blast valve plate and a working method thereof.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a double-deck double helix cooling hot-blast valve plate, includes the valve plate body, adjacent upper water course and lower floor's water course are separated through the interlayer board to valve plate body inside, are linked together through the intercommunication axle between upper water course and the lower floor's water course, and upper water course and lower floor's water course are by outer water circle, interior bounding wall, double helix cooling water course, the intercommunication axle of down including in proper order, wherein: outer ring water channels are formed between the outer water ring and the inner surrounding plate on the same layer, the outer ends of the outer ring water channels and the double-spiral cooling water channels on the same layer are communicated through the flow guide holes, and the inner ends of the double-spiral cooling water channels are communicated with the communicating shaft; the outer ring water channel of the upper layer water channel is connected with the water inlet, the outer ring water channel of the lower layer water channel is connected with the water outlet, and water baffles are arranged on the outer ring water channel between the water inlet and the diversion hole on the same layer and the outer ring water channel between the water outlet and the diversion hole on the same layer.

Preferably, the end face of the upper-layer water channel seals the end faces of the outer-ring water channel and the double-helix cooling water channel through the upper cover plate, and the end face of the lower-layer water channel seals the end faces of the outer-ring water channel and the double-helix cooling water channel through the lower cover plate.

Preferably, the double-helix cooling water channels are spirally connected to the communication shaft from the diversion holes from outside to inside, and the same adjacent side is shared by the double-helix cooling water channels on the same layer.

Preferably, both ends of the communicating shaft are closed, and the peripheral parts of both ends of the communicating shaft are provided with through holes communicated with the inner ends of the double-helix cooling water channels on the same layer.

Preferably, the peripheral parts of the water inlet and the water outlet are fixedly provided with rib plates which are connected with the valve plate body into a whole.

Preferably, a plurality of lifting lugs and supporting seats are fixedly arranged on the outer peripheral part of the valve plate body.

A working method of a double-layer double-helix cooling hot blast valve plate comprises the following steps: cooling water flows in from the water inlet, flows through the outer ring water channel of the upper layer water channel, cools the outer water ring and the sealing surface of the valve plate, then enters the double-helix cooling water channel of the upper layer water channel through the set flow guide holes, flows to the middle communicating shaft, enters the double-helix cooling water channel of the lower layer water channel, flows through the double-helix cooling water channel and the outer ring water channel of the lower layer water channel from inside to outside, and is finally discharged from the water outlet; the novel water channel circulation structure is applied, important parts of the outer water ring and the sealing surface are cooled in advance, double-layer double helix is adopted in the valve plate body, the double-layer double helix is adopted from outside to inside, from top to bottom and from inside to outside, heat transfer is effectively reduced, the defects of large cooling water consumption and low cooling efficiency in the prior art are overcome, and the quality and the service life of the hot blast valve are greatly improved.

Compared with the prior art, the invention has the following beneficial effects: the novel water channel circulation structure is applied, important parts of the outer water ring and the sealing surface are cooled in advance, double-layer double helix is adopted in the valve plate body, the double-layer double helix is adopted from outside to inside, from top to bottom and from inside to outside, heat transfer is effectively reduced, heat loss is small, a welded junction is not prone to fatigue cracking, the defects that the original cooling water consumption is large and the cooling efficiency is low are overcome, and the quality and the service life of the hot blast valve are greatly improved.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic front view of the present invention.

FIG. 2 is a schematic view of the back side of the embodiment of the present invention.

Fig. 3 is a side cross-sectional view of an embodiment of the present invention.

Detailed Description

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1-3, a double-deck double helix cooling hot blast valve plate, including valve plate body 1, adjacent upper water course 3 and lower floor's water course 4 are separated to valve plate body inside through division board 2, are linked together through communicating shaft 5 between upper water course and the lower floor's water course, and upper water course and lower floor's water course are by outer water circle 6, interior bounding wall 7, double helix cooling water course 8, the communicating shaft of down including in proper order, wherein: outer ring water channels 9 are formed between the outer water ring and the inner surrounding plate on the same layer, the outer ends of the outer ring water channels and the double-helix cooling water channels on the same layer are communicated through the diversion holes 10, and the inner ends of the double-helix cooling water channels are communicated with the communicating shaft; the outer ring water channel of the upper layer water channel is connected with the water inlet 11, the outer ring water channel of the lower layer water channel is connected with the water outlet 12, and the water baffle plates 13 are arranged on the outer ring water channel between the water inlet and the diversion hole on the same layer and the outer ring water channel between the water outlet and the diversion hole on the same layer.

In the embodiment of the invention, the end face of the upper layer water channel seals the end faces of the outer ring water channel and the double helix cooling water channel through the upper cover plate 14, and the end face of the lower layer water channel seals the end faces of the outer ring water channel and the double helix cooling water channel through the lower cover plate 15.

In the embodiment of the invention, the double-spiral cooling water channels are spirally connected to the communication shaft from the diversion holes from outside to inside, and the same adjacent side is shared by the double-spiral cooling water channels on the same layer.

In the embodiment of the invention, both ends of the communicating shaft are closed, and the peripheries of both ends of the communicating shaft are provided with through holes 16 communicated with the inner ends of the double-helix cooling water channels on the same layer.

In the embodiment of the invention, rib plates 17 which are connected with the valve plate body into a whole are fixedly arranged on the outer peripheral parts of the water inlet and the water outlet.

In the embodiment of the present invention, a plurality of lifting lugs 18 and supporting seats 19 are fixedly arranged on the outer periphery of the valve plate body.

A working method of a double-layer double-helix cooling hot blast valve plate comprises the following steps: cooling water flows in from the water inlet, flows through the outer ring water channel of the upper layer water channel, cools the outer water ring and the sealing surface of the valve plate, then enters the double-helix cooling water channel of the upper layer water channel through the set flow guide holes, flows to the middle communicating shaft, enters the double-helix cooling water channel of the lower layer water channel, flows through the double-helix cooling water channel and the outer ring water channel of the lower layer water channel from inside to outside, and is finally discharged from the water outlet; the novel water channel circulation structure is applied, important parts of the outer water ring and the sealing surface are cooled in advance, double-layer double helix is adopted in the valve plate body, the double-layer double helix is adopted from outside to inside, from top to bottom and from inside to outside, heat transfer is effectively reduced, the defects of large cooling water consumption and low cooling efficiency in the prior art are overcome, and the quality and the service life of the hot blast valve are greatly improved.

The invention is not limited to the best embodiment, and other various forms of double-layer double-helix cooling hot blast valve plate and working methods thereof can be obtained by anyone under the teaching of the invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.