CN-115717847-B - Gas heating system convenient for descaling

CN115717847BCN 115717847 BCN115717847 BCN 115717847BCN-115717847-B

Abstract

The invention provides a fuel gas heating system convenient for descaling, and belongs to the technical field of boilers. The technical scheme includes that the fuel gas heating system convenient for descaling comprises a boiler body, a water collecting tank and a water cooling wall, wherein the water cooling wall comprises a plurality of pipelines communicated with the boiler body and the water collecting tank, and the fuel gas heating system is characterized in that rails are arranged on the inner wall of the boiler body and the inner wall of the water collecting tank, a placing frame is arranged in the rails in a sliding mode, the rails are located on two sides of an opening of the water cooling wall, and the fuel gas heating system further comprises a scale cleaning mechanism capable of being placed on the placing frame and used for cleaning the inner wall of the pipeline. The boiler water cooling wall descaling device has the beneficial effects that the boiler water cooling wall is convenient to scale and the aim of saving energy is fulfilled.

Inventors

ZHANG XUEMIAO
WU YUNCHANG
ZHANG YUGUO
ZHENG XIANGYU
SUN YUNJIE
ZHANG LIN
LIU XIHUA
XU WEIPING
ZHANG QIANG
GAO MENG
ZHANG JILIANG

Assignees

青岛能源设计研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20220523

Claims (3)

1. The utility model provides a convenient dirty gas heating system, includes boiler body, header tank and water-cooling wall, the water-cooling wall includes a plurality of intercommunication boiler body and header tank's pipeline, its characterized in that, be provided with the track on the inner wall of boiler body and the inner wall of header tank, the slip is provided with the rack in the track, the track is located the both sides of water-cooling wall opening part; The scale cleaning mechanism can be placed on the placing frame and used for cleaning the inner wall of the pipeline; The scale cleaning mechanism comprises a circular cylinder and a cylinder body sleeved on the outer side of the circular cylinder, and lug plates are symmetrically arranged on the outer side of the upper end of the cylinder body; The novel V-shaped rod is characterized by further comprising a V-shaped rod with a curved end surface, wherein a scraper is arranged at the other end of the V-shaped rod, the joint of the V-shaped rod is rotatably arranged on the ear plate, openings matched with one end of the V-shaped rod are arranged at two sides of the circular cylinder, an arc-shaped groove matched with the curved surface is formed in the inner wall of the upper end of the opening, an air passage is formed in the middle position of the circular cylinder, the upper end of the air passage is connected with an upper air pipe through a rotary joint, the upper air pipe is connected with an air pump, the lower end of the air passage is connected with an air bag through a lower air pipe, the air bag comprises a large diameter part capable of sealing the pipeline and a small diameter part capable of extending into the cylinder, the lower end of the circular cylinder is provided with a top plate capable of being contacted with the upper end of the small diameter part, the lower air pipe is located between the two top plates, and a one-way valve is arranged between the air bag and the lower air pipe; the air pump is used for inflating the air bag through the upper air pipe, the air passage, the lower air pipe and the one-way valve, the large-diameter part can prop up the top plate and play a role in blocking after the air bag is inflated, the top plate can prop up the circular cylinder, the circular cylinder is driven to move upwards by the top plate, and the arc-shaped groove is matched with the curved surface to enable the scraper at the outer end of the V-shaped rod to prop up the inner wall of the pipeline; The driving mechanism comprises a cylinder-shaped bracket, the cylinder-shaped bracket is rotatably arranged on the cylinder-shaped bracket, an outer gear ring is concentrically and fixedly arranged on the upper end surface of the cylinder-shaped bracket, a driving gear meshed with the outer gear ring is rotatably arranged on the cylinder-shaped bracket, and the driving gear is driven by a motor with a speed reducer; The lower air pipe comprises a vertical section and a horizontal section, the lower end of the horizontal section is connected with the air bag, a plurality of air holes are formed in the lower end of the vertical section, a sealing ring capable of sealing all the air holes is sleeved on the outer side of the vertical section, a supporting plate is fixedly arranged at the upper end of the small-diameter portion, the supporting plate is located below the top plate, the supporting plate is arranged on the cylinder body through a spring, a strip-shaped opening allowing the supporting plate to move up and down is formed in the side wall of the cylinder body, the lower end of the sealing ring is fixedly connected with the supporting plate on the small-diameter portion through a supporting rod, and the air holes can blow air to the inner wall of the pipeline.
2. A fuel gas heating system for facilitating scale removal as set forth in claim 1, wherein said V-shaped rod is rotatably disposed on said ear plate by a shaft having an axis spatially perpendicular to an axis of said cylinder.
3. The gas heating system convenient for descaling according to claim 1, wherein the rail comprises two symmetrically arranged fixing rods, T-shaped grooves are formed in the fixing rods in a penetrating mode, T-shaped sliding blocks are arranged in the two T-shaped grooves in a sliding mode, the placing frame is fixed on the two T-shaped sliding blocks, an arc-shaped supporting plate matched with the barrel is arranged on the placing frame, and the barrel can be placed on the arc-shaped supporting plate after the scale cleaning mechanism is separated from the pipeline.

Description

Gas heating system convenient for descaling The scheme is a divisional application, the name of the original application is an energy-saving gas heating system, the application date of the original application is 2022-05-23, and the application number of the original application is CN202210560359.9. Technical Field The invention belongs to the technical field of boilers, and particularly relates to a fuel gas heating system convenient for descaling. Background The boiler can cause scale formation inside the water wall after long-term operation, and particularly a large amount of scale can be accumulated in the horizontal section of the water wall. The heat exchange of the boiler can be influenced after the water-cooling wall is scaled, so that the steam yield of the steam drum is insufficient, the rated evaporation capacity of the boiler is not reached, the heat absorption capacity of the water-cooling wall is reduced, the efficiency is reduced, and the resource waste is caused. At present, the descaling of the water-cooled wall is generally treated along with the boiler body by adopting chemical cleaning, and the water flow speed is faster and the cleaning effect is poor because the inner diameter of the water-cooled wall is smaller. Disclosure of Invention The invention aims to provide a fuel gas heating system which can conveniently scale the water-cooled wall of a boiler. The invention is realized by the following measures that the fuel gas heating system convenient for descaling comprises a boiler body, a water collecting tank and a water cooling wall, wherein the water cooling wall comprises a plurality of pipelines communicated with the boiler body and the water collecting tank, and is characterized in that rails are arranged on the inner wall of the boiler body and the inner wall of the water collecting tank, a placing rack is arranged in the rails in a sliding manner, and the rails are positioned at two sides of an opening of the water cooling wall; the scale cleaning device also comprises a scale cleaning mechanism which can be placed on the placing frame and is used for cleaning the inner wall of the pipeline. The scale cleaning mechanism comprises a circular cylinder and a cylinder body sleeved on the outer side of the circular cylinder, and lug plates are symmetrically arranged on the outer side of the upper end of the cylinder body; The novel V-shaped rod comprises a V-shaped rod with a curved end face, wherein a scraper is arranged at the other end of the V-shaped rod, the joint of the V-shaped rod is rotatably arranged on the ear plate, openings matched with one end of the V-shaped rod are arranged at two sides of the circular cylinder, arc grooves matched with the curved surface are formed in the inner wall of the upper end of the opening, an air passage is formed in the middle position of the circular cylinder, the upper end of the air passage is connected with an upper air pipe through a rotary joint, the upper air pipe is connected with an air pump, the lower end of the air passage is connected with an air bag through a lower air pipe, the air bag comprises a large diameter part capable of sealing the pipeline and a small diameter part capable of extending into the cylinder, the lower end of the circular cylinder is provided with a top plate capable of being contacted with the upper end of the small diameter part, and a one-way valve is arranged between the two top plates; The air pump is through last trachea, air flue, lower trachea and check valve toward the gasbag is inflated, the gasbag is inflated the back big footpath portion can be pushed up on the inner wall of pipeline and play the shutoff effect, the path portion can with the roof jack-up, the roof drives the cylinder moves up, the arc wall with the curved surface cooperation makes scraper on the V type pole outer end can be pushed up on the inner wall of pipeline. The arc-shaped groove and the opening are matched to form a space for placing one end of the V-shaped rod, so that one end of the V-shaped rod cannot be separated from the arc-shaped groove and the opening in the process of moving and resetting the circular cylinder. The driving mechanism comprises a cylindrical support, the cylindrical support is rotatably arranged on the cylindrical support, an outer gear ring is concentrically and fixedly arranged on the upper end face of the cylindrical support, a driving gear meshed with the outer gear ring is rotatably arranged on the cylindrical support, and the driving gear is driven by a motor with a speed reducer. The motor is fixed on the cylindrical support. The lower trachea includes vertical section and horizontal segment, the lower extreme of horizontal segment with the gasbag is connected, the lower extreme of vertical section is provided with a plurality of bleeder vents, the sealing washer that can shutoff all bleeder vents has been cup jointed in the outside of vertical section, the lower extreme of sealing washer