Heat exchange pipeline connecting structure for coal-fired boiler

Abstract

A heat exchange pipeline connecting structure for a coal-fired boiler comprises a distribution header pipe, and a plurality of connecting pipe bundles are arranged on the distribution header pipe. An access pipeline is arranged on one side of the distribution header pipe, and the access pipeline is connected with an external pipeline; and a clamping fixing ring is arranged on the outer side of the access pipeline and is fixedly connected with the external pipeline. The connecting pipeline and the external pipeline are connected through the clamping fixing ring, and assembling convenience and structural reliability can be guaranteed.

Description

Technical Field

[0001] The present application relates to a heat exchange pipe connection structure for a coal-fired boiler. Background Art

[0002] Coal-fired boilers use coal as fuel, heating water within pipes to produce high-temperature steam. Since the primary source of this high-temperature steam is the tube bundle, numerous distributors are required to connect these bundles. Current distributor assembly efficiency is low, typically requiring only welding. Therefore, structural improvements are needed to maximize assembly efficiency while ensuring structural safety. Utility Model Content

[0003] To address the aforementioned issues, this application proposes a heat exchange pipe connection structure for a coal-fired boiler, comprising a distribution main pipe with a plurality of connecting pipe bundles disposed thereon; an access pipe disposed on one side of the distribution main pipe, the access pipe being connected to an external pipe; and a clamping fixing ring disposed on the outer side of the access pipe, the clamping fixing ring being fixedly connected to the external pipe. This application utilizes a clamping fixing ring to connect the access pipe and the external pipe, ensuring ease of assembly and structural reliability.

[0004] Preferably, a snap-fit ​​groove is provided on the access pipe, and the snap-fit ​​fixing ring includes a threaded connection section that is threadedly sleeved on the outside of the external pipe. The external pipe is provided with an external threaded section corresponding to the threaded connection section, and an external abutment ring is provided at the end of the threaded connection section. The external abutment ring is provided to abut the end of the external threaded section, and a positioning ring is provided on the inner side of the external abutment ring. The present application forms a control unit by providing the external abutment ring and the positioning ring, which can play a positioning role during installation and a protective role after assembly is completed.

[0005] Preferably, a first sealing ring is provided on the inner side of the positioning ring, and a positioning gasket is provided on the outer side of the first sealing ring, wherein the positioning gasket is clamped and disposed in the clamping groove; a second sealing ring is provided at the outermost end of the access pipe and the inner side of the external threaded section. In this application, the first sealing ring and the second sealing ring cooperate to form two positions, ultimately achieving an effective seal between the access pipe and the external threaded section, while the positioning gasket plays a positioning role to prevent the sealing ring from failing due to excessive force.

[0006] Preferably, a snap-fit ​​installation groove is formed between the positioning ring, the external abutment ring and the threaded connection section, and the external threaded section is inserted into the snap-fit ​​installation groove.

[0007] Preferably, the positioning gasket comprises an annular plate, and a plurality of evenly distributed oblique abutment plates are provided on the side of the annular plate facing the external pipe.

[0008] Preferably, an outer positioning ring abutting against the clamping fixing ring is provided on the outer side of the connection position between the external thread section and the external pipe, and an inner positioning platform abutting against the second sealing ring is provided on the inner side.

[0009] This application can bring the following beneficial effects:

[0010] 1. This application uses a clamping fixing ring to connect the incoming pipe and the external pipe, which can ensure the convenience of assembly and structural reliability.

[0011] 2. The present application forms a control entity by providing an outer abutment ring and a positioning ring, which can play a positioning role during installation and a protective role after assembly is completed.

[0012] 3. This application forms two positions by cooperating with the first sealing ring and the second sealing ring, ultimately achieving effective sealing between the access pipe and the external threaded section, while the positioning gasket plays a positioning role to avoid failure of the sealing ring due to excessive force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this application.

[0015] Figure 2 This is an explosion diagram of this application.

[0016] Figure 3 This is a schematic diagram of the internal structure of this application. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this application is described in detail below through specific implementation methods and in conjunction with its accompanying drawings.

[0018] In the first embodiment, if Figure 1 As shown, a heat exchange pipe connection structure for a coal-fired boiler includes a distribution main pipe 1, on which a plurality of connecting pipe bundles 2 are provided; an access pipe 3 is provided on one side of the distribution main pipe 1, and the access pipe 3 is connected to an external pipe 4; a clamping fixing ring 5 is provided on the outside of the access pipe 3, and the clamping fixing ring 5 is fixedly connected to the external pipe 4.

[0019] When in use, the incoming pipe 3 and the external pipe 4 are plugged together and fixed with a clamping fixing ring 5 on the outside to complete the structural assembly.

[0020] In the second embodiment, if Figure 1-3 As shown, a heat exchange pipe connection structure for a coal-fired boiler includes a distribution main pipe 1, on which a plurality of connecting pipe bundles 2 are provided; an access pipe 3 is provided on one side of the distribution main pipe 1, and the access pipe 3 is connected to an external pipe 4; a clamping fixing ring 5 is provided on the outside of the access pipe 3, and the clamping fixing ring 5 is fixedly connected to the external pipe 4.

[0021] A snap-fit ​​groove 6 is provided on the access pipe 3. The snap-fit ​​fixing ring 5 includes a threaded connection section 7 that is threadedly sleeved on the outside of the external pipe 4. The external pipe 4 is provided with an external threaded section 8 corresponding to the threaded connection section 7. An external abutting ring 9 is provided at the end of the threaded connection section 7. The external abutting ring 9 is abutted against the end of the external threaded section 8. A positioning ring 10 is provided on the inner side of the external abutting ring 9. A first sealing ring 11 is provided on the inner side of the positioning ring 10. The material should be selected according to the operating conditions. A positioning gasket 12 is provided on the outer side of the first sealing ring 11. The positioning gasket 12 is snap-fitted into the snap-fit ​​groove 6. A second sealing ring 13 is provided between the outermost end of the access pipe 3 and the inner side of the external threaded section 8. The material should be selected according to the operating conditions. A snap-fit ​​installation groove 14 is formed between the positioning ring 10, the external abutting ring 9, and the threaded connection section 7. The external threaded section 8 is inserted into the snap-fit ​​installation groove 14. The positioning gasket 12 includes an annular plate 15 , and a plurality of evenly distributed oblique abutment plates 16 are provided on a side of the annular plate 15 facing the external pipe 4 .

[0022] An outer positioning ring 17 abutting against the clamping fixing ring 5 is provided on the outer side of the connection position between the external thread section 8 and the external pipe 4 , and an inner positioning platform 18 abutting against the second sealing ring 13 is provided on the inner side.

[0023] When in use, a second sealing ring 13 is set at the end of the access pipe 3, and then abutted against the inner positioning platform. For the outer abutment ring 9, the first sealing ring 11 and the positioning gasket 12 are squeezed into the clamping groove 6, and at the same time, the threaded connection between the internal thread section and the external thread section 8 is completed, that is, the structural assembly is completed.

[0024] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A heat exchange pipe connection structure for a coal-fired boiler, characterized in that: It includes a distribution main pipe, on which are arranged a plurality of connecting pipe bundles; an access pipe is arranged on one side of the distribution main pipe, and the access pipe is connected to an external pipe; a clamping fixing ring is arranged on the outside of the access pipe, and the clamping fixing ring is fixedly connected to the external pipe.

2. A heat exchange pipe connection structure for a coal-fired boiler according to claim 1, characterized in that: A clamping groove is provided on the access pipe, and the clamping fixing ring includes a threaded connection section that is threadedly sleeved on the outside of the external pipe. The external pipe is provided with an external threaded section corresponding to the threaded connection section, and an external abutment ring is provided at the end of the threaded connection section. The external abutment ring is abutted against the end of the external threaded section, and a positioning ring is provided on the inward side of the external abutment ring.

3. A heat exchange pipe connection structure for a coal-fired boiler according to claim 2, characterized in that: A first sealing ring is provided on the inner side of the positioning ring, and a positioning gasket is provided on the outer side of the first sealing ring. The positioning gasket is clamped in the clamping groove; a second sealing ring is provided at the outermost end of the access pipe and the inner side of the external threaded section.

4. A heat exchange pipe connection structure for a coal-fired boiler according to claim 3, characterized in that: A clamping installation groove is formed between the positioning ring, the outer abutting ring and the threaded connection section, and the outer threaded section is inserted into the clamping installation groove.

5. The heat exchange pipe connection structure for a coal-fired boiler according to claim 3, characterized in that: The positioning gasket comprises an annular plate, and a plurality of evenly distributed oblique abutment plates are arranged on one side of the annular plate facing the external pipe.

6. The heat exchange pipe connection structure for a coal-fired boiler according to claim 3, characterized in that: An outer positioning ring abutting against the clamping fixing ring is provided on the outer side of the connection position between the external thread section and the external pipe, and an inner positioning platform abutting against the second sealing ring is provided on the inner side.

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