CN-224215358-U - Three-layer pipe modular slag cooler

CN224215358UCN 224215358 UCN224215358 UCN 224215358UCN-224215358-U

Abstract

The utility model relates to a three-layer pipe module type slag cooler, which relates to the technical field of slag coolers and comprises a cylinder. The heat exchange structure sets up the three-layer in the barrel, and every layer all has the rivers passageway that flows through heat exchange structure both ends, and all rivers passageway all communicate with the barrel outside. A first slag conveying channel is arranged between the outermost layer and the middle layer, a second slag conveying channel is arranged between the middle layer and the innermost layer, and a third slag conveying channel is arranged on the inner side of the innermost layer. The water inlets and the water outlets of all the water flow channels are communicated with the outer side of the cylinder body. And the spiral guide structure is respectively arranged in the first slag conveying channel, the second slag conveying channel and the third slag conveying channel and is used for conveying slag from the slag inlet to the slag outlet. The utility model is provided with three layers of heat exchange structures for cooling slag operation based on the water cooling principle, and improves the heat exchange efficiency.

Inventors

WANG ZHENSHAN
ZHAO YINGHE
WANG XIAOLONG
XU CHENGXING

Assignees

青岛嘉能海诺电力设备有限公司

Dates

Publication Date: 20260508
Application Date: 20250423

Claims (10)

1. A three-layer pipe modular slag cooler, comprising: one end of the cylinder body is provided with a slag inlet, the other end is provided with a slag outlet; the driving device is used for driving the cylinder to rotate; The heat exchange structure is arranged in the cylinder, three layers are arranged along the radial direction of the cylinder from outside to inside, each layer is provided with water flow channels flowing through two ends of the heat exchange structure, and all the water flow channels are communicated with the outer side of the cylinder; And the spiral guide structure is respectively arranged in the first slag conveying channel, the second slag conveying channel and the third slag conveying channel and is used for conveying slag from the slag inlet to the slag outlet.
2. The three-layer pipe modular slag cooler of claim 1, wherein the end of the outermost water flow channel of the heat exchange structure near the slag inlet is communicated with the end of the middle water flow channel of the heat exchange structure near the slag inlet, cooling water flows out of the barrel after flowing through the middle water flow channel of the heat exchange structure from the outermost water flow channel of the heat exchange structure, and cooling water flows back to the slag outlet side from the slag inlet side in the innermost water flow channel of the heat exchange structure and finally flows out of the barrel.
3. The three-layer tube modular slag cooler as set forth in claim 2, wherein the innermost layer of the heat exchange structure has a plurality of heat exchange tube groups distributed about the axis of the barrel, the heat exchange tube groups having a plurality of water tubes communicating with each other, and the cooling water flowing from the slag hole side through the slag inlet side and back to the slag hole side in the heat exchange tube groups.
4. A three-layer tube modular slag cooler as defined in claim 3, wherein the innermost layer of the heat exchange structure further comprises a first heat transfer tube, the first heat transfer tube being fixed in position, and all heat exchange tube groups being fixed to the first heat transfer tube.
5. The three-layer pipe module slag cooler of claim 2, wherein the outermost water flow channel of the heat exchange structure and the middle water flow channel of the heat exchange structure are a plurality of water pipes parallel to the axis of the cylinder.
6. The three-layer pipe module type slag cooler according to claim 5, further comprising a connecting structure for connecting the water flow channel of the outermost layer of the heat exchange structure and the water flow channel of the middle layer of the heat exchange structure, and abutting against the end face of the barrel body on one side of the slag inlet.
7. The three-layer tube modular slag cooler of claim 6, wherein the engagement structure comprises: The annular pipes are connected with all water pipes at the outermost layer of the heat exchange structure; The connecting pipes are in one-to-one correspondence with the intermediate layer water pipes of the heat exchange structure and are used for connecting the corresponding intermediate layer water pipes of the heat exchange structure with the annular pipes and propping against the end face of one side of the slag inlet arranged on the cylinder.
8. The three-layer pipe modular slag cooler of claim 7, wherein the connecting pipe is U-shaped.
9. The three-layer tube module type slag cooler of any one of claims 1 to 8, further comprising a first radial support structure connecting an outermost layer and an intermediate layer of the heat exchange structure, and a second radial support structure connecting an innermost layer and an intermediate layer of the heat exchange structure.
10. The three-layer pipe modular slag cooler of claim 9, further comprising a third radial support structure extending through the middle and outer layers of the heat exchange structure and connecting the innermost layer of the heat exchange structure to the barrel.

Description

Three-layer pipe modular slag cooler Technical Field The utility model relates to the technical field of slag coolers, in particular to a three-layer pipe module type slag cooler. Background The slag cooler is used as an auxiliary machine of the boiler and has the function of cooling the ash slag burnt in the boiler. The ash slag is subjected to heat exchange with cooling water through a slag cooler, and most of heat of the ash slag is taken away by the circulating cooling water, so that the cooling of the ash slag is realized. The Chinese patent CN204704828U provides a double-layer film type roller slag cooler, which comprises a barrel and a driving mechanism, wherein the driving mechanism drives the barrel to rotate on a supporting wheel, the barrel rotates to drive slag in the barrel to move from a slag inlet end to a slag outlet end to transfer heat to the barrel, the barrel comprises an outer barrel and an inner barrel, the outer barrel is formed by welding a plurality of film type fin tube groups and comprises a plurality of water inlet tubes and a plurality of water return tubes, the inner barrel comprises a plurality of groups of high-temperature section inner tube rows and a plurality of groups of low-temperature Duan Naguan rows which are fixed on the outer barrel in an annular arrangement through a supporting device, the plurality of groups of high-temperature section inner tube rows and the plurality of water inlet tubes corresponding to the outer barrel form a water loop in series through transition bent tubes, spiral blades and inner fins corresponding to the rotation of the barrel are welded on the inner sides of the high-temperature section inner tube rows and the low-temperature section inner tube rows, slag conveying channels are formed between the outer barrel and the high-temperature section inner tube rows and the low-temperature section inner tube rows, the slag conveying channels and the inner barrel form a slag conveying system together, and the high-temperature section inner tube rows and the low-temperature section inner tube rows are provided with lifting plates. The cooling water sequentially flows through the water inlet pipe in the outer cylinder, the high-temperature section inner pipe row, the water collecting box, the water return pipe in the outer cylinder and the low-temperature section inner pipe row to the water return main pipe. The slag cooler is provided with two ash passages, and compared with a slag cooler with a single-layer tube bank, the slag cooler is larger in heat exchange area and higher in heat exchange efficiency. However, the slag cooler still has room for further improvement in terms of heat exchange efficiency. Disclosure of utility model Aiming at the problem of lower heat exchange efficiency of a double-layer pipe-discharge slag cooler in the prior art, the utility model provides a three-layer pipe module type slag cooler, which is provided with a three-layer heat exchange structure for cooling slag operation based on a water cooling principle, and improves the heat exchange efficiency. The utility model provides a three-layer pipe module type slag cooler, which comprises: one end of the cylinder body is provided with a slag inlet, the other end is provided with a slag outlet. And the driving device is used for driving the cylinder to rotate. The heat exchange structure is arranged in the cylinder body, three layers are arranged from outside to inside along the radial direction of the cylinder body, each layer is provided with water flow channels flowing through two ends of the heat exchange structure, and all the water flow channels are communicated with the outer side of the cylinder body. A first slag conveying channel is arranged between the outermost layer and the middle layer, a second slag conveying channel is arranged between the middle layer and the innermost layer, and a third slag conveying channel is arranged on the inner side of the innermost layer. The water inlets and the water outlets of all the water flow channels are all through the cylinder body is provided with a slag outlet one end is communicated with the outside of the cylinder body. And the spiral guide structure is respectively arranged in the first slag conveying channel, the second slag conveying channel and the third slag conveying channel and is used for conveying slag from the slag inlet to the slag outlet. In some embodiments, the end of the outermost water flow channel of the heat exchange structure, which is close to the slag inlet, is communicated with the end of the middle water flow channel of the heat exchange structure, which is close to the slag inlet, and cooling water flows out of the cylinder body after flowing through the middle water flow channel of the heat exchange structure from the outermost water flow channel of the heat exchange structure. In the water flow channel of the innermost layer of the heat exchange structure, cooling water flows from the slag