阅读说明：本技术 一种水冷风帽 (Water-cooling wind cap ) 是由 施剑 于 2021-07-28 设计创作，主要内容包括：本发明提供一种水冷风帽,包括：风帽本体设有第一中空腔室和若干流化风道,第一中空腔室用作冷却风帽本体的冷却介质流道,若干流化风道沿周向均匀分布,风帽本体外壁上设有与流化风道相连通的径向通孔；冷却介质管路一端与第一中空腔室轴向相连,冷却介质管路内部与冷却介质流道相连通构成轴向通道,轴向通道内沿轴向设有隔层,冷却介质流道间隔为倒U形流道,使冷却介质管路间隔为与进水侧和回水侧；风管一端与风帽本体外壁轴向相连,风管的内壁与冷却介质管路的内部之间形成第二中空腔室,第二中空腔室与若干流化风道的敞口端相连通。本发明能延长风帽的使用寿命,同时,防止风帽本体在被堵塞时受高温发生材料性质变化,避免产生热变形。(The invention provides a water-cooling blast cap, comprising: the blast cap body is provided with a first hollow chamber and a plurality of fluidization air channels, the first hollow chamber is used as a cooling medium flow channel for cooling the blast cap body, the plurality of fluidization air channels are uniformly distributed along the circumferential direction, and the outer wall of the blast cap body is provided with a radial through hole communicated with the fluidization air channels; one end of the cooling medium pipeline is axially connected with the first hollow cavity, the interior of the cooling medium pipeline is communicated with the cooling medium flow passage to form an axial passage, an interlayer is axially arranged in the axial passage, and the cooling medium flow passage is separated into inverted U-shaped flow passages, so that the cooling medium pipeline is separated into a water inlet side and a water return side; one end of the air pipe is axially connected with the outer wall of the air cap body, a second hollow cavity is formed between the inner wall of the air pipe and the inside of the cooling medium pipeline, and the second hollow cavity is communicated with the open ends of the plurality of fluidization air channels. The invention can prolong the service life of the hood, and simultaneously prevent the hood body from being subjected to high temperature to generate material property change when being blocked, thereby avoiding thermal deformation.)

1. A water-cooled cowl, comprising:

the funnel cap comprises a funnel cap body, wherein the funnel cap body is provided with a first hollow chamber and a plurality of fluidization air channels, one end of the first hollow chamber is an open end, the first hollow chamber is used as a cooling medium flow channel for cooling the funnel cap body, the fluidization air channels are uniformly distributed along the periphery of the first hollow chamber along the circumferential direction, the fluidization air channels and the cooling medium flow channel are concentrically arranged, one end of each fluidization air channel is an open end, and a radial through hole communicated with the other end of each fluidization air channel is formed in the outer wall of the funnel cap body;

one end of the cooling medium pipeline is axially connected with the first hollow cavity, the inside of the cooling medium pipeline is communicated with the cooling medium flow channel to form an axial channel, an interlayer is axially arranged in the axial channel to enable the cooling medium flow channel to be separated into inverted U-shaped flow channels, meanwhile, the cooling medium pipeline is separated into a water inlet side communicated with the inlet of the inverted U-shaped flow channel and a water return side communicated with the outlet of the inverted U-shaped flow channel, cooling medium flows into the inverted U-shaped flow channel from the water inlet side to cool the air cap body, and flows out from the water return side;

the tuber pipe, the one end of tuber pipe with the outer wall axial of hood body links to each other, just the tuber pipe set up in the periphery of coolant pipeline, the inner wall of tuber pipe with form the cavity chamber in the second between the outer wall of coolant pipeline, the cavity chamber in the second with the opening end of a plurality of fluidization wind channels is linked together.

2. The water-cooled hood according to claim 1, wherein the partition is disposed at a central position of the axial passage, and the axial passage is divided into two passages symmetrically distributed by the partition.

3. The water-cooled hood according to claim 2, wherein a gap for flowing a cooling medium is provided between the top end of the partition and the top of the cooling medium flow passage.

4. The water-cooled hood as claimed in claim 2, wherein the inner wall of the cooling medium channel is provided with two symmetrical guide grooves for positioning and installing the partition.

5. The water-cooling blast cap according to claim 1, wherein the other end of the cooling medium pipeline is provided with a seal head for connecting with the end of the interlayer.

6. The water-cooling hood according to claim 5, wherein a water inlet and a water outlet are arranged on the outer wall of the cooling medium pipeline close to the sealing head, wherein the water inlet is communicated with the water inlet side, the water inlet is used for introducing cooling medium to the water inlet side, the water outlet is communicated with the water outlet side, and the water outlet is used for discharging the cooling medium in the water outlet side.

7. The water-cooled hood according to claim 1, wherein the plurality of fluidization air ducts are arranged vertically; the radial through holes are arranged at an included angle with the horizontal direction, and outlets of the radial through holes are positioned below the inlets.

8. The water-cooled wind cap according to claim 7, wherein the included angle between the radial through hole and the horizontal direction is 15-25 °.

9. The water-cooling blast cap according to any one of claims 1 to 8, wherein a sealing member is provided at a connection position of one end of the cooling medium pipeline and the other end of the first hollow chamber, so that the cooling medium pipeline and the first hollow chamber are in sealing fit.

10. The water-cooled hood according to any one of claims 1 to 8, wherein the hood body has a cylindrical structure with one end having a tapered shape.

Technical Field

The invention relates to the field of sludge treatment, in particular to a water-cooling air cap.

Background

In the existing bubbling fluidized bed sludge incineration process, the hood is in a high-temperature and bed material fluidized state environment for a long time, the hood is cooled only by fluidized air, the service life of the hood is short due to factors such as high-temperature oxidation corrosion and bed material abrasion, the hood needs to be replaced regularly, particularly, a runner of the hood is blocked, heat on the hood cannot be taken away by the fluidized air, local high temperature is generated, the hood is more easily damaged under the action of expansion with heat and contraction with cold, even the material property of the hood is changed at high temperature, and after the runner of the hood is recovered to be unblocked, compared with the original hood, the hood is not wear-resistant and corrosion-resistant. For the traditional treatment mode, the blast cap can be replaced only by blowing out the furnace and destroying hard refractory materials near the blast cap after the temperature of the hearth is reduced. The time for replacing the blast cap is long, and more indirect economic losses are generated.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a water-cooling blast cap, which prolongs the service life of the blast cap, and simultaneously avoids the thermal deformation caused by the material property change of the blast cap due to high temperature when the blast cap is blocked.

The invention provides a water-cooling blast cap, comprising:

the funnel cap comprises a funnel cap body, wherein the funnel cap body is provided with a first hollow chamber and a plurality of fluidization air channels, one end of the first hollow chamber is an open end, the first hollow chamber is used as a cooling medium flow channel for cooling the funnel cap body, the fluidization air channels are uniformly distributed along the periphery of the first hollow chamber along the circumferential direction, the fluidization air channels and the cooling medium flow channel are concentrically arranged, one end of each fluidization air channel is an open end, and a radial through hole communicated with the other end of each fluidization air channel is formed in the outer wall of the funnel cap body;

one end of the cooling medium pipeline is axially connected with the first hollow cavity, the inside of the cooling medium pipeline is communicated with the cooling medium flow channel to form an axial channel, an interlayer is axially arranged in the axial channel to enable the cooling medium flow channel to be separated into inverted U-shaped flow channels, meanwhile, the cooling medium pipeline is separated into a water inlet side communicated with the inlet of the inverted U-shaped flow channel and a water return side communicated with the outlet of the inverted U-shaped flow channel, cooling medium flows into the inverted U-shaped flow channel from the water inlet side to cool the air cap body, and flows out from the water return side;

the tuber pipe, the one end of tuber pipe with the outer wall axial of hood body links to each other, just the tuber pipe set up in the periphery of coolant pipeline, the inner wall of tuber pipe with form the cavity chamber in the second between the outer wall of coolant pipeline, the cavity chamber in the second with the opening end of a plurality of fluidization wind channels is linked together.

Preferably, the interlayer is arranged at the center of the axial channel, and the axial channel is divided into two symmetrically distributed channels by the interlayer.

Preferably, a gap for flowing of the cooling medium is arranged between the top end of the partition and the top of the cooling medium flow channel.

Preferably, two symmetrical guide grooves for positioning and installing the partition layers are formed in the inner wall of the cooling medium flow passage.

Preferably, the other end of the cooling medium pipeline is provided with a seal head used for being connected with the end of the interlayer.

Preferably, a water inlet and a water outlet are arranged on the outer wall of the cooling medium pipeline, close to the end enclosure, wherein the water inlet is communicated with the water inlet side, the water inlet is used for introducing cooling medium to the water inlet side, the water outlet is communicated with the water outlet side, and the water outlet is used for discharging the cooling medium in the water outlet side.

Preferably, the plurality of fluidization air ducts are arranged vertically; the radial through holes are arranged at an included angle with the horizontal direction, and outlets of the radial through holes are positioned below the inlets.

Preferably, the included angle between the radial through hole and the horizontal direction is 15-25 degrees.

Preferably, a sealing element is arranged at a connecting position of one end of the cooling medium pipeline and the other end of the first hollow chamber, so that the cooling medium pipeline is in sealing fit with the first hollow chamber.

Preferably, the hood body is a cylindrical structure with one end in a conical shape.

Compared with the prior art, the invention has at least one of the following beneficial effects:

according to the structure, the fluidized air channel and the cooling medium flow channel are arranged in the cold cap body, and the interlayer and the cooling medium flow channel are arranged to form the water cooling jacket structure, so that the problems in the following two aspects can be solved; on the other hand, when the material is more above the hood body, and when the fluidized air can not well penetrate through the material layer to block, the cooling medium can still normally enter and exit the hood body through the water-cooling jacket structure to cool the hood body, so that the damage of the hood body caused by the change of material properties due to local high temperature is avoided, the thermal deformation is generated, the service life of the hood is prolonged, and the replacement frequency of the hood is reduced.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a water-cooled hood according to a preferred embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view taken along line B-B of FIG. 1;

the scores in the figure are indicated as: the device comprises a water inlet 1, a water outlet 2, an air distribution plate 3, a refractory pouring material layer 4, an air pipe 5, a cooling medium pipeline 6, a water inlet side 7, a water return side 8, an interlayer 9, a second hollow chamber 10, an air cap body 11, a fluidized air duct 1101 and a cooling medium flow channel 1102.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

Referring to fig. 1, which is a schematic structural diagram of a water-cooled hood according to a preferred embodiment of the present invention, the water-cooled hood is used in a sludge incineration bubbling fluidized bed, and includes a hood body 11, a cooling medium pipeline 6 and an air pipe 5.

The blast cap body 11 is provided with a first hollow chamber and a plurality of fluidization air ducts 1101, wherein one end of the first hollow chamber is an open end, the first hollow chamber is used as a cooling medium flow passage 1102 for cooling the blast cap body 11, the plurality of fluidization air ducts 1101 are arranged on the outer wall of the first hollow chamber, the plurality of fluidization air ducts 1101 are circumferentially distributed around the first hollow chamber at even intervals, the plurality of fluidization air ducts 1101 are concentrically arranged with the cooling medium flow passage 1102, and the fluidization air ducts 1101 extend along the axial direction of the cooling medium flow passage 1102. One end of the fluidization air duct 1101 is an open end used for being communicated with the air pipe 5, a radial through hole communicated with the other end of the fluidization air duct 1101 is arranged on the outer wall of the air cap body 11, and the radial through hole is used as an outlet of the fluidization air duct 1101. The number of radial through holes matches the number of fluidization air ducts 1101.

As a preferred mode, the hood body is a columnar structure with one end in a conical shape, the first hollow chamber is a columnar space, and the plurality of fluidization air ducts are vertical passages extending along the axial direction of the columnar space. The optimal number of the plurality of fluidization air ducts is 8-10.

Referring to fig. 2, one end of the cooling medium pipeline 6 is axially connected to the first hollow chamber, the inside of the cooling medium pipeline 6 is communicated with the cooling medium flow passage 1102 to form an axial passage, the axial passage is internally provided with a partition layer 9 along the axial direction, the partition layer 9 and the cooling medium flow passage 1102 form a water cooling jacket, namely, one side of the partition layer 9 and the inner wall of the first hollow chamber form a first chamber, the other side of the partition layer 9 and the inner wall of the first hollow chamber form a second chamber, the second chamber is communicated with the first chamber to form an inverted U-shaped flow passage, the inverted U-shaped flow passage provides a circulation passage for the cooling medium, and at the same time, the cooling medium pipeline 6 is partitioned into a water inlet side 7 communicated with the inlet of the inverted U-shaped flow passage and a water return side 8 communicated with the outlet of the inverted U-shaped flow passage, the cooling medium enters from the water inlet side 7, the inverted U-shaped flow channel flows through to cool the hood body 11, flows to the backwater side 8 under the action of the interlayer 9, flows out from the outlet of the backwater side 8, then flows into the next serially connected hood or flows out of the bubbling fluidized bed, and the cooling of the hood is completed. Through adopting water-cooling jacket structure, can be under furnace high temperature environment, effectual cooling hood body 11 reduces hood body 11 temperature, reduces the hood damage frequency, prolongs the life of hood greatly.

As a preferred mode, referring to fig. 2, the partition 9 is a partition. The partition plate is arranged at the central position of the axial channel, and the axial channel is divided into two symmetrically distributed channels through the partition plate, so that the cooling medium can be uniformly distributed; further, a gap for flowing the cooling medium is formed between the top end of the partition plate and the top of the cooling medium flow passage 1102, so that the cooling medium flows through the inner wall of the whole first hollow chamber from top to bottom along the inverted U-shaped channel, and the arrangement mode improves the cooling effect.

Referring to fig. 1 and 3, an air pipe 5 is disposed in a refractory pouring material layer 4 on an air distribution plate 3, one end of the air pipe 5 is axially connected with one end of an air cap body 11, the other end of the air pipe 5 is mounted on the air distribution plate 3, and fluidized air enters a fluidized air channel 1101 through the air pipe 5 and enters a fluidized bed hearth at the lower part of the air distribution plate 3; the air pipe 5 is arranged at the periphery of the cooling medium pipeline 6, a second hollow chamber 10 is formed between the inner wall of the air pipe 5 and the outer wall of the cooling medium pipeline 6, the second hollow chamber 10 is communicated with the open ends of the plurality of fluidized air channels 1101, and air in the air chamber below the air distribution plate 3 flows through the air pipe 5 to the plurality of fluidized air channels 1101 and then flows out of the outlets of the fluidized air channels 1101 to enter the fluidized bed boiler.

Above-mentioned water-cooling hood, when normal operating, the part of hood body 11 exposure in furnace, ambient temperature is high, under the dual cooling effect of fluidization wind and cooling water, the heat that the cooling hood was absorbed from the furnace, and hood body 11 can be by fine cooling, and hood body 11 temperature rise is little, can effectively reduce high temperature oxidation corrosion and bed material wearing and tearing. When 11 tops materials of hood body are more, lead to the fluidization wind can not be fine pierce through the bed of material and when taking place to block up, through setting up water-cooling jacket structure, make the cooling water still can normally pass in and out the hood, cool off the hood, prevent the damage that local high temperature produced, reach the practical life who increases the hood, reduce the hood and change the frequency.

In other preferred embodiments, two symmetrical guide grooves for positioning and mounting the partition are formed on the inner wall of the cooling medium flow passage, and the upper part of the partition is fixed through the guide grooves.

In other preferred embodiments, the other end of the cooling medium pipeline is provided with a sealing head for connecting with the end of the barrier, the other end of the cooling medium pipeline is closed by the sealing head, and the other end of the barrier is fixed by the sealing head.

In other partially preferred embodiments, referring to fig. 1, the cooling medium pipeline 6 is provided with a water inlet 1 and a water outlet 2 on its outer wall, wherein the water inlet is connected to a pipeline for introducing the cooling medium, and the water inlet is communicated with the water inlet side 7 for introducing the cooling medium to the water inlet side 7. The water outlet 2 is connected with a pipeline for discharging cooling media, the water outlet 2 is communicated with the water outlet side for discharging the cooling media, and the water inlet and the water outlet 2 are arranged close to the seal head.

In other partially preferred embodiments, and with reference to FIG. 1, the radial through holes are angled at 15 to 25 from horizontal, such that the radial through holes are disposed at an acute angle to the fluidization air channel 1101. The inlet of the radial through hole communicates with the fluidization air duct 1101, and the outlet of the radial through hole communicates with the outside. The outlet of the radial through hole is lower than the inlet, so that the outlet of the radial through hole is arranged downwards.

In some other preferred embodiments, a sealing member is disposed at a connection position between one end of the cooling medium pipeline and the other end of the first hollow chamber, so that the cooling medium pipeline and the first hollow chamber are in sealing fit. As a preferable mode, one end of the cooling medium pipeline is inserted into the first hollow chamber, and an annular sealing member is arranged between the outer wall of the cooling medium pipeline and the inner wall of the first hollow chamber, so that the outer wall of the cooling medium pipeline is in sealing fit with the inner wall of the first hollow chamber.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.