High-temperature pressure-resistant soot blowing and removing gun barrel

Abstract

A high-temperature pressure-resistant soot blowing and removing gun barrel comprises a soot blowing gun barrel body installed in a boiler and is characterized in that the soot blowing gun barrel body comprises an inner pipe (1) and an outer pipe (2), the outer pipe (2) is installed on the outer wall of the inner pipe (1), an interlayer space (3) is formed between the inner wall of the outer pipe (2) and the outer wall of the inner pipe (1), and a medium is introduced into the interlayer space (3) for cooling or heating; the soot blowing gun barrel has the advantages that a cooling medium or a heating medium is input into the interlayer space, so that the purpose of cooling or heating the soot blowing gun barrel is achieved, and the gun barrel can be used in an environment of more than 500 DEG C for a long time.

Description

Technical Field

[0001] The utility model relates to the field of soot blowers, in particular to a high-temperature and pressure-resistant soot-blowing and dust-removing gun barrel. Background Art

[0002] Currently, because industrial boilers are high-temperature, high-pressure equipment, some auxiliary equipment is constrained by temperature, pressure, and material constraints, increasing design and manufacturing difficulties and making it difficult to meet boiler design requirements. This results in wasted work, time, and materials, which in turn increases user investment costs. This is a long-standing and common phenomenon in the boiler industry. For example, the sootblower lance, due to temperature and pressure limitations, only allows the use of long telescopic sootblower or other less suitable sootblowing equipment in high-temperature zones. Some users have resorted to manual soot removal, forgoing installation. When installing a sootblower, a corresponding mounting and maintenance platform must be added. Failure of a sootblower during operation can result in: 1. The lance can become stuck in the furnace, potentially exploding steam pipes; 2. Excessive temperatures can cause the lance to deform, leading to safety hazards. All of these factors directly increase boiler investment costs, increase the workload for maintenance workers, and create safety risks. Utility Model Content

[0003] The purpose of the present invention is to provide a high temperature and pressure resistant soot blowing and dust removal gun barrel in view of the above-mentioned deficiencies.

[0004] The utility model comprises a sootblowing gun tube installed in a boiler, and is characterized in that the sootblowing gun tube comprises an inner tube and an outer tube, the outer tube is installed on the outer wall of the inner tube, an interlayer space is formed between the inner wall of the outer tube and the outer wall of the inner tube, and a medium is introduced into the interlayer space to cool or heat it.

[0005] A group of soot blowing nozzles are provided on the wall of the inner tube, and the soot blowing nozzles penetrate the outer tube and blow toward the inside of the boiler.

[0006] One end of the inner tube is the inlet of the purge medium, and the other end of the inner tube is provided with an end face sealing plate.

[0007] The outer tube is welded to the outer wall of the inner tube.

[0008] Both ends of the outer tube are respectively provided with a heat exchange medium inlet and a heat exchange medium outlet.

[0009] A group of transition holes are opened on the outer tube, and the soot blowing nozzles extend from the corresponding transition holes.

[0010] The outer wall of the sootblowing nozzle is sealed to the transition hole.

[0011] The utility model has the advantages that a cooling medium or a heating medium is input into the interlayer space, thereby achieving the purpose of cooling or heating the sootblowing gun barrel, and allowing the gun barrel to be used in an environment greater than 500° C. for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the gun barrel of the present utility model.

[0013] Figure 2 It is a structural schematic diagram of a sealing plate on the inner end face of a gun barrel according to the present invention. DETAILED DESCRIPTION

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0017] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "inner," "outer," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. These terms are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limitations on the present invention. In addition, if the terms "first," "second," etc. appear in the description of the present invention, they are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0018] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0019] As shown in the accompanying drawings, the utility model includes a sootblowing lance installed in a boiler, characterized in that the sootblowing lance includes an inner tube 1 and an outer tube 2, the outer tube 2 is installed on the outer wall of the inner tube 1, and an interlayer space 3 is formed between the inner wall of the outer tube 2 and the outer wall of the inner tube 1, and a medium is introduced into the interlayer space 3 to cool or heat it.

[0020] A group of soot blowing nozzles 4 are provided on the wall of the inner tube 1 , and the soot blowing nozzles 4 penetrate the outer tube 2 and blow toward the inside of the boiler.

[0021] One end of the inner tube 1 is the inlet of the purge medium, and the other end of the inner tube 1 is provided with an end face sealing plate 5.

[0022] The outer tube 2 is welded to the outer wall of the inner tube 1 .

[0023] A heat exchange medium inlet 10 and a heat exchange medium outlet 11 are respectively provided at both ends of the outer tube 2 .

[0024] A group of transition holes are opened on the outer tube 2, and the soot blowing nozzles 4 extend from the corresponding transition holes.

[0025] The outer wall of the sootblowing nozzle 4 is sealed to the transition hole.

[0026] Example 1: A cooling medium is introduced into the interlayer space 3 to reduce the temperature of the inner tube 1 and the outer tube 2, so that the sootblower barrel can be used in an environment greater than 500°C for a long time.

[0027] Example 2: The heat exchange medium inlet 10 and heat exchange medium outlet 11 are connected to pipelines, each equipped with a circulating medium valve. When the temperature and pressure of the sootblowing lance exceed set values, the circulating medium valve opens, allowing heat exchange medium to enter the interlayer space 3 through the heat exchange medium inlet 10, cooling or heating the inner tube 1, lowering or raising the sootblowing lance temperature to within the set range. The heated medium can then be recovered into the pressure vessel through the heat exchange medium outlet 11 for use as sootblowing medium or for other purposes. With the cooling medium input, the sootblowing lance temperature is lowered to within the set range, enabling the lance to be used in high-temperature environments for extended periods. The support and mutual tension of the sootblowing nozzle 4 between the inner and outer tubes 1 and 2 increase the lance's pressure-bearing capacity. The wall thickness and material of the inner and outer tubes 1 and 2 can be designed based on temperature and pressure requirements.

[0028] An end face sealing plate 5 is provided in the other end of the inner tube 1 , which blocks the purge medium from flowing out directly and makes it all be sprayed out through the sootblowing nozzle 4 .

Claims

1. A high-temperature and pressure-resistant sootblowing and ash removal gun barrel, comprising a sootblowing gun barrel installed in a boiler, characterized in that: The sootblowing gun tube comprises an inner tube (1) and an outer tube (2). The outer tube (2) is mounted on the outer wall of the inner tube (1). An interlayer space (3) is formed between the inner wall of the outer tube (2) and the outer wall of the inner tube (1). A medium is introduced into the interlayer space (3) to cool or heat the medium.

2. The high temperature and pressure resistant soot blowing and dust removal gun barrel according to claim 1, characterized in that: A group of soot blowing nozzles (4) are arranged on the wall of the inner tube (1), and the soot blowing nozzles (4) penetrate the outer tube (2) and blow toward the inside of the boiler.

3. The high temperature and pressure resistant soot blowing and dust removal gun barrel according to claim 1, characterized in that: One end of the inner tube (1) is a purge medium inlet, and an end face sealing plate (5) is provided in the other end of the inner tube (1).

4. The high temperature and pressure resistant soot blowing and dust removal gun barrel according to claim 1, characterized in that: The outer tube (2) is welded to the outer wall of the inner tube (1).

5. The high temperature and pressure resistant soot blowing and dust removal gun barrel according to claim 1, characterized in that: A heat exchange medium inlet (10) and a heat exchange medium outlet (11) are respectively provided at both ends of the outer tube (2).

6. The high temperature and pressure resistant soot blowing and dust removal gun barrel according to claim 1, characterized in that: A group of transition holes are opened on the outer tube (2), and the soot blowing nozzles (4) extend from the corresponding transition holes.

7. The high temperature and pressure resistant soot blowing and removing gun barrel according to claim 6, characterized in that: The outer wall of the sootblowing nozzle (4) is sealed to the transition hole.

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