Structure for preventing overtemperature of front enclosure wall of once-through boiler

Abstract

The utility model relates to the technical field of boilers, and provides a structure for preventing overtemperature of a front enclosure wall of a once-through boiler, which comprises a front enclosure wall body, a mounting groove is arranged inside the front enclosure wall body, a protective pipe is fixedly connected inside the mounting groove, heat dissipation holes are arranged inside the protective pipe, and the heat dissipation holes are communicated with the mounting groove. According to the front enclosure wall structure, the heat dissipation holes are vertically formed in the protection pipe, heat in the front enclosure wall body can be conveniently dissipated, the protection pipe is made of manganese steel, the strength is good, and the front enclosure wall structure is convenient to use, high in heat dissipation efficiency and good in heat dissipation effect, and the service life of the front enclosure wall structure is prolonged. The heat dissipation holes are vertically formed in the protection pipe, so that the service life of the front enclosure wall structure is prolonged, and the service life of the front enclosure wall structure is prolonged. The front enclosure wall body is not prone to deformation, the mounting groove can be filled, and the situation that due to the fact that the mounting groove is formed in the front enclosure wall body, when the quality of the front enclosure wall body is high and a filter screen needs to be mounted, a connecting block can be embedded into a connecting groove, then the connecting block is rotated to be clamped into a clamping groove, and therefore the filter screen is fixed is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler technical field, concretely relates to a structure of preventing superheat of front package wall of once-through boiler. BACKGROUND

[0002] Under the pressure head of the feedwater pump, the feedwater passes through heating, evaporation and superheating heating surfaces in turn to generate superheated steam with certain pressure and temperature, and the boiler is a once-through boiler. When the once-through boiler operates, impurities in the feedwater are deposited on the heating surfaces except for part of the impurities carried away by the steam; and when the unit is stopped, iron oxide is generated inside due to corrosion. In order to remove the dirt, the circulating cleaning with deaerated water at a certain temperature is required before ignition.

[0003] However, the front package wall of the existing once-through boiler will cause superheat of some front package wall thin-walled pipes due to excessively high temperature during use, and the superheat of the thin-walled pipes cannot be controlled even exploded during operation, which threatens the safe operation of the unit.

[0004] In view of this, the utility model provides a structure of preventing superheat of the front package wall of the once-through boiler. UTILITY MODEL CONTENTS

[0005] The utility model provides a structure of preventing superheat of the front package wall of the once-through boiler, and solves the problem that the front package wall of the existing once-through boiler will cause superheat of some front package wall thin-walled pipes due to excessively high temperature during use, and the superheat of the thin-walled pipes cannot be controlled even exploded during operation, which threatens the safe operation of the unit.

[0006] The technical scheme of the utility model is as follows: a structure of preventing superheat of the front package wall of the once-through boiler, including the front package wall body, the inside of the front package wall body is provided with the mounting groove, the inside of the mounting groove is fixedly connected with the protection pipe, the inside of the protection pipe is provided with the heat dissipation hole, the top of the protection pipe is provided with the clamping groove located in the inside of the front package wall body, the top of the clamping groove is provided with the connecting groove, the inside of the clamping groove is embedded with the connecting block, the side surface of the connecting block is fixedly connected with the filter screen, the surface of the front package wall body is sprayed with the heat preservation layer, the surface of the heat preservation layer is sprayed with the high molecular nanometer compactness fiber spraying layer, the surface of the high molecular nanometer compactness fiber spraying layer is sprayed with the ceramic fiber spraying layer.

[0007] Preferably, the surface of the ceramic fiber spraying layer is fixedly connected with the protection plate, and the surface of the front package wall body is provided with a plurality of groups of through holes.

[0008] Preferably, the protection pipe is made of manganese steel, the protection pipe completely fills the mounting groove, and the heat preservation layer is made of heat preservation roll and felt shaped product to unshaped high molecular compactness fiber spraying material.

[0009] Preferably, the heat dissipation holes are arranged vertically, and the top of the heat dissipation holes is hidden inside the front wall body.

[0010] Preferably, the slot is arranged in a ring about the center of the protective tube, and the connecting groove is interconnected with the slot.

[0011] Preferably, the dimensions of the slot and the connecting groove are adapted to the connecting block, and the filter screen completely covers the top of the protective tube.

[0012] Preferably, the protective plate is arranged in an "X" shape on the surface of the front wall body.

[0013] Preferably, several groups of through holes are arranged vertically, and the through holes penetrate the front wall body and connect with the heat dissipation holes.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] In this invention, by setting heat dissipation holes vertically inside the protective tube, the heat inside the front wall body can be easily dissipated. Since the protective tube is made of manganese steel, it has good strength and will not easily deform. The mounting groove can be filled to avoid affecting the quality of the front wall body due to the mounting groove being opened inside the front wall body. When the filter screen needs to be installed, the connecting block can be embedded into the connecting groove, and then the connecting block can be rotated to make it snap into the groove, thereby fixing the filter screen.

[0016] In this invention, by setting an "X"-shaped protective plate, the impact resistance of the front wall body can be further enhanced. By setting through holes that are interconnected with heat dissipation holes, the heat inside the front wall body can be further dissipated, preventing the front wall body from overheating. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the protective tube structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the connecting block structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the card slot structure of this utility model.

[0022] In the diagram: 1. Front wall covering body; 2. Installation groove; 3. Protective pipe; 4. Heat dissipation hole; 5. Card slot; 6. Connection groove; 7. Filter screen; 8. Connection block; 9. Protective plate; 10. Through hole; 11. Insulation layer; 12. High polymer nano-dense fiber spray coating; 13. Ceramic fiber spray coating. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model. Example 1

[0024] A preferred embodiment of the structure for preventing overheating of the front wall of a DC boiler provided by this utility model is, for example... Figures 1 to 4 As shown: A structure for preventing overheating of the front wall of a DC boiler includes a front wall body 1, an installation groove 2 inside the front wall body 1, a protective pipe 3 fixedly connected inside the installation groove 2, heat dissipation holes 4 inside the protective pipe 3, a slot 5 located inside the front wall body 1 above the protective pipe 3, a connecting groove 6 at the top of the slot 5, a connecting block 8 embedded inside the slot 5, a filter screen 7 fixedly connected to the side of the connecting block 8, an insulation layer 11 sprayed on the surface of the front wall body 1, a polymer nano-dense fiber spray coating 12 sprayed on the surface of the insulation layer 11, and a ceramic fiber spray coating 13 sprayed on the surface of the polymer nano-dense fiber spray coating 12.

[0025] In this embodiment, the protective tube 3 is made of manganese steel. The protective tube 3 completely fills the installation groove 2. The insulation layer 11 is made of insulation rolls and felt shaped products sprayed with a coating material onto irregular high-polymer dense fibers. The protective tube 3 is made of manganese steel, which has good strength and will not easily deform. It can fill the installation groove 2 and avoid the loss of quality of the front wall body 1 due to the installation groove 2 being opened inside the front wall body 1.

[0026] In this embodiment, the heat dissipation hole 4 is arranged vertically, and the top of the heat dissipation hole 4 is hidden inside the front wall body 1. By setting the heat dissipation hole 4, which is arranged vertically inside the protective tube 3, it is easy to dissipate the heat inside the front wall body 1.

[0027] In this embodiment, the slot 5 is arranged in a ring about the center of the protective tube 3, and the connecting slot 6 is interconnected with the slot 5, so that the connecting block 8 can be easily inserted into the slot 5 through the connecting slot 6.

[0028] In this embodiment, the dimensions of the slot 5 and the connecting slot 6 are adapted to the connecting block 8. The filter screen 7 completely covers the top of the protective tube 3. When the filter screen 7 needs to be installed, the connecting block 8 can be embedded into the inside of the connecting slot 6, and then the connecting block 8 can be rotated to make it snap into the inside of the slot 5, thereby fixing the filter screen 7. By setting the filter screen 7, dust can be prevented from falling into the heat dissipation hole 4 and adhering to the inner wall of the heat dissipation hole 4, thus affecting the heat dissipation of the heat dissipation hole 4. Example

[0029] Based on the embodiments, a preferred embodiment of the structure for preventing overheating of the front wall of a DC boiler provided by this utility model is, for example... Figures 1 to 4 As shown: A protective plate 9 is fixedly connected to the surface of the front wall body 1, and several sets of through holes 10 are provided on the surface of the front wall body 1.

[0030] In this embodiment, the protective plate 9 is arranged in an "X" shape on the surface of the front wall body 1. By setting the "X" shaped protective plate 9, the impact resistance of the front wall body 1 can be further enhanced.

[0031] In this embodiment, several sets of through holes 10 are arranged vertically. The through holes 10 penetrate the front wall body 1 and connect with the heat dissipation holes 4. The surface of the front wall body 1 is coated with a ceramic fiber coating 13. By setting the through holes 10, the through holes 10 and the heat dissipation holes 4 are interconnected, which can further facilitate the dissipation of heat inside the front wall body 1 and prevent the front wall body 1 from getting too hot. By setting the ceramic fiber coating 13, the front wall body 1 can have a better high temperature resistance.

[0032] The working principle and usage process of this utility model are as follows: First, by setting heat dissipation holes 4, which are vertically set inside the protective tube 3, the heat inside the front wall body 1 can be easily dissipated. Since the protective tube 3 is made of manganese steel, it has good strength and will not easily deform. The mounting groove 2 can be filled to avoid affecting the weight of the front wall body 1 due to the mounting groove 2 being opened inside the front wall body 1. When it is necessary to install the filter screen 7, the connecting block 8 can be embedded into the connecting groove 6. Then, the connecting block 8 is rotated to make it snap into the insert groove 5, thereby fixing the filter screen 7. By setting the filter screen 7, dust can be prevented from falling into the heat dissipation holes 4 and adhering to the heat dissipation holes. The inner wall 4 affects the heat dissipation of the heat dissipation holes 4. By setting an "X"-shaped protective plate 9, the impact resistance of the front wall body 1 can be further enhanced. By setting a through hole 10, which is interconnected with the heat dissipation holes 4, the heat inside the front wall body 1 can be further dissipated, avoiding the front wall body 1 from overheating. Since the surface of the front wall body 1 is sprayed with a ceramic fiber spray coating 13, the ceramic fiber spray coating 13 has good heat resistance. The high-molecular nano-dense fiber spray material contains a high-molecular adhesive with good bonding performance. Combined with silica sol molding, the adhesion is very good. The insulation layer 11 will not be displaced due to furnace wall vibration during operation.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A structure for preventing overheating of the front wall of a DC boiler, comprising a front wall body (1), characterized in that, The front wall covering body (1) is provided with an installation groove (2) inside. A protective tube (3) is fixedly connected inside the installation groove (2). A heat dissipation hole (4) is provided inside the protective tube (3). A slot (5) located inside the front wall covering body (1) is provided above the protective tube (3). A connecting groove (6) is provided at the top of the slot (5). A connecting block (8) is embedded inside the slot (5). A filter screen (7) is fixedly connected to the side of the connecting block (8). An insulation layer (11) is sprayed on the surface of the front wall covering body (1). A polymer nano-dense fiber spray coating layer (12) is sprayed on the surface of the insulation layer (11). A ceramic fiber spray coating layer (13) is sprayed on the surface of the polymer nano-dense fiber spray coating layer (12).

2. The structure for preventing overheating of the front wall of a DC boiler according to claim 1, characterized in that, A protective plate (9) is fixedly connected to the surface of the ceramic fiber spray coating (13), and a number of through holes (10) are provided on the surface of the front wall body (1).

3. The structure for preventing overheating of the front wall of a DC boiler according to claim 1, characterized in that, The protective tube (3) is made of manganese steel and completely fills the mounting groove (2). The insulation layer (11) is made by spraying a coating onto an unshaped polymer dense fiber from insulation rolls and felt shaped products.

4. The structure for preventing overheating of the front wall of a DC boiler according to claim 1, characterized in that, The heat dissipation holes (4) are arranged vertically, and the top of the heat dissipation holes (4) is hidden inside the front wall body (1).

5. The structure for preventing overheating of the front wall of a DC boiler according to claim 1, characterized in that, The slot (5) is arranged in a ring about the center of the protective tube (3), and the connecting slot (6) is interconnected with the slot (5).

6. The structure for preventing overheating of the front wall of a DC boiler according to claim 1, characterized in that, The dimensions of the slot (5) and the connecting slot (6) are adapted to the connecting block (8), and the filter (7) completely covers the top of the protective tube (3).

7. The structure for preventing overheating of the front wall of a DC boiler according to claim 2, characterized in that, The protective plate (9) is arranged in an "X" shape on the surface of the front wall body (1).

8. The structure for preventing overheating of the front wall of a DC boiler according to claim 2, characterized in that, The through holes (10) are arranged in several groups vertically, and the through holes (10) penetrate the front wall body (1) and connect with the heat dissipation holes (4).

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