A flow passage mounting structure for a thermal power unit

Abstract

The utility model provides a kind of runner installation structure for heat engine set.The runner installation structure for heat engine set includes: shock absorbing chassis;Quick-release assembly, the quick-release assembly is installed in the top of shock absorbing chassis, the top of quick-release assembly is equipped with two supports, the top of two supports is fixedly connected with lower snap ring, the top of lower snap ring is equipped with docking assembly, flange connecting structure is installed between docking assembly and lower snap ring by buffer ring, corrugated compensator is installed between two flange connecting structures;First runner pipe, the first runner pipe is installed in the other end of one flange connecting structure.The runner installation structure for heat engine set provided by the utility model greatly improves the sealing reliability of runner, the leakage rate at interface is significantly reduced, can be adapted to high temperature and high pressure working condition, installation and maintenance are optimized, single section runner weight is reduced, large hoisting equipment is not needed, local damage can be replaced individually, maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of flow channel technology for thermal power units, and in particular to a flow channel installation structure for thermal power units. Background Technology

[0002] A thermal power unit is a power device that combines power generation and heating functions. It uses coal, natural gas, or other fuels, and the heat energy generated by combustion drives a steam turbine to generate electricity. At the same time, the extracted or exhausted steam after the turbine has done its work is used to transport the heat energy to the heating network to provide steam and hot water for industrial production or residential life. This type of unit realizes the cascade utilization of energy, greatly improves the comprehensive energy utilization efficiency, and is an important piece of equipment in the urban energy supply system.

[0003] The flow channel of a thermal power unit is the core channel for the working fluid to complete energy conversion and transportation. It includes two types: steam flow channel and cooling water flow channel. The high-temperature steam generated by fuel combustion enters the steam turbine through the steam flow channel to do work and drive the generator to generate electricity. After doing work, part of the steam is diverted to the heating network, and the rest enters the condenser. The cooling water flow channel is responsible for transporting cooling water and completing the steam condensation in the condenser to ensure the unit's circulating operation. Its structural design directly affects the unit's power generation efficiency and heating capacity.

[0004] Traditional thermal power unit flow channels are rigidly installed as a whole. When the unit starts up and stops or the load fluctuates, the temperature of the medium in the flow channel changes significantly. The integral flow channel will generate significant axial thermal expansion. The rigid installation cannot release stress, which can easily cause the seal at the interface between the flow channel and the equipment to tear or fatigue cracks to appear in the flow channel body. The integral flow channel is heavy and requires large hoisting equipment for installation. When a part is damaged, the whole channel needs to be replaced, resulting in high maintenance costs.

[0005] Therefore, it is necessary to provide a flow channel mounting structure for thermal power units to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides a flow channel installation structure for thermal power units, which solves the problems of traditional thermal power unit flow channels being easily damaged by axial expansion due to heat, as well as being heavy, difficult to install, and requiring complete replacement for partial damage, resulting in high maintenance costs.

[0007] To solve the above-mentioned technical problems, the flow channel installation structure for thermal power units provided by this utility model includes: a shock-absorbing base frame;

[0008] The quick-release assembly is installed on the top of the shock-absorbing base frame. Two brackets are installed on the top of the quick-release assembly. A lower retaining ring is fixedly connected to the top of each of the two brackets. A docking assembly is installed on the top of each lower retaining ring. A flange connection structure is installed between the docking assembly and the lower retaining ring through a buffer ring. A corrugated compensator is installed between the two flange connection structures.

[0009] A first flow channel pipe is installed at one end of one of the flange connection structures, and a second flow channel pipe is installed at the other end of the other flange connection structure.

[0010] The flange connection structure is divided into two parts: one part is welded to the bellows compensator, and the other part is welded to the flow channel pipe.

[0011] Preferably, a crossbar is installed between the two brackets, and a support assembly is installed on the top of the crossbar;

[0012] The support component is used to contact the outer surface of the corrugated compensator and provides support.

[0013] Preferably, the support assembly includes a stabilizer and a support ring, the stabilizer being used to mount the support ring on top of the crossbar.

[0014] Preferably, the docking assembly includes an upper retaining ring and two fixing structures, the two fixing structures being used to mount the upper retaining ring on top of the lower retaining ring;

[0015] The fixing structure is installed at both ends of the upper retaining ring, and the fixing structure is used to connect the two ends of the lower retaining ring and the two ends of the upper retaining ring together.

[0016] Preferably, the shock-absorbing base includes a base plate and a plurality of shock-absorbing components, the plurality of shock-absorbing components being used to mount quick-release assemblies on top of the base plate.

[0017] Preferably, the quick-release assembly includes a fixing plate, fixing bolts, a mounting bracket, and a docking bracket. The mounting bracket is mounted on the top of the fixing plate, and the fixing bolts pass through one side of the mounting bracket to install the docking bracket inside the mounting bracket.

[0018] The fixing bolts and the connecting bracket are threaded on one side.

[0019] Preferably, the quick-release assembly has a flow port at the top and an interception plate at the bottom.

[0020] The flow port runs through the top and bottom of the fixing plate in the quick-release assembly, and the interceptor plate can act as a filter.

[0021] Preferably, a heat dissipation component is mounted on the top of the quick-release assembly. The heat dissipation component includes a mounting ring and a heat dissipation element. The mounting ring is used to mount the heat dissipation element on the top of the quick-release assembly.

[0022] Compared with related technologies, the flow channel mounting structure for thermal power units provided by this utility model has the following advantages:

[0023] This utility model provides a flow channel installation structure for a thermal power unit. To increase the stability and convenience of flow channel installation, the entire flow channel is divided into a first flow channel pipe and a second flow channel pipe. A corrugated compensator is installed at the adjacent end of the first and second flow channel pipes via a flange connection structure. The corrugated compensator can simultaneously absorb minor radial offsets and facilitate the installation of the flow channel pipes. A buffer ring is fixed to the outer surface of the two flange connection structures using a lower retaining ring and a mating assembly, increasing connection stability. Furthermore, with the aid of a bracket and quick-release assembly, the flange connection can be quickly completed. The structure is installed and fixed, providing stable support. The buffer ring ensures the stability of the connection between the lower retaining ring and the docking component. When the flow channel expands due to heat, the corrugated compensator's waveform structure stretches axially; when it shrinks due to cold, the waveform structure contracts. Throughout the process, the deformation is absorbed by elastic deformation, keeping the stress of the flow channel body within the allowable stress of the material. This design greatly improves the sealing reliability of the flow channel, significantly reduces the leakage rate at the interface, and is suitable for high-temperature and high-pressure conditions. Installation and maintenance are optimized, the weight of a single flow channel section is reduced, large hoisting equipment is not required, and local damage can be replaced individually, reducing maintenance costs. Attached Figure Description

[0024] Figure 1 A schematic diagram of the first embodiment of the flow channel mounting structure for a thermal power unit provided by this utility model;

[0025] Figure 2 A schematic diagram of the base plate is provided for this utility model;

[0026] Figure 3 Provided for this utility model Figure 2 An enlarged view of point A shown;

[0027] Figure 4 Provided for this utility model Figure 2 An enlarged view of point B shown;

[0028] Figure 5 A schematic diagram of the second embodiment of the flow channel mounting structure for a thermal power unit provided by this utility model;

[0029] Figure 6 Provided for this utility model Figure 5 A magnified view of point C shown.

[0030] The diagram is labeled as follows: 1. Vibration damping base frame; 101. Base plate; 102. Vibration damping component; 2. Quick-release assembly; 201. Fixing plate; 202. Fixing bolt; 203. Mounting bracket; 204. Connecting bracket; 3. Support; 4. First flow channel pipe; 5. Connecting assembly; 501. Upper retaining ring; 502. Fixing structure; 6. Flange connection structure; 7. Corrugated compensator; 8. Second flow pipe; 9. Support assembly; 901. Stabilizing frame; 902. Support ring; 10. Lower retaining ring; 11. Buffer ring; 12. Heat dissipation assembly; 121. Mounting ring; 122. Heat dissipation component; 13. Interception plate; 14. Flow port; 15. Crossbar. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] First Embodiment

[0033] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of the first embodiment of the flow channel mounting structure for a thermal power unit provided by this utility model; Figure 2 A schematic diagram of the base plate is provided for this utility model; Figure 3 Provided for this utility model Figure 2 An enlarged view of point A shown; Figure 4 Provided for this utility model Figure 2 The enlarged view at point B is shown. The flow channel mounting structure for the thermal power unit includes: a vibration-damping base frame 1;

[0034] Quick-release assembly 2 is installed on the top of the shock-absorbing base frame 1. Two brackets 3 are installed on the top of the quick-release assembly 2. A lower retaining ring 10 is fixedly connected to the top of each of the two brackets 3. A docking assembly 5 is installed on the top of each lower retaining ring 10. A flange connection structure 6 is installed between the docking assembly 5 and the lower retaining ring 10 through a buffer ring 11. A corrugated compensator 7 is installed between the two flange connection structures 6.

[0035] A first flow channel pipe 4 is installed at the other end of one of the flange connection structures 6, and a second flow channel pipe 8 is installed at the other end of the other flange connection structure 6.

[0036] The flange connection structure 6 is divided into two parts. One part is welded to the bellows compensator 7, and the other part is welded to the flow channel pipe. The buffer ring 11, the lower retaining ring 10, and the docking assembly 5 are fitted on the outer surface of the flange connection structure 6. The shock-absorbing base frame 1 is fixed in the corresponding position by bolts, which can play a shock-absorbing role. The quick-release assembly 2 can realize the quick assembly and disassembly of the bracket 3.

[0037] Please refer to Figure 1 and Figure 2 A crossbar 15 is installed between the two brackets 3, and a support assembly 9 is installed on the top of the crossbar 15;

[0038] The support component 9 is used to contact the outer surface of the corrugated compensator 7 and provides support.

[0039] Please refer to Figure 1 and Figure 2 The support assembly 9 includes a stabilizer 901 and a support ring 902, wherein the stabilizer 901 is used to mount the support ring 902 on the top of the crossbar 15;

[0040] The inner surface of the retainer ring 902 is provided with rubber to allow for some movement at the connection point.

[0041] Please refer to Figure 2 and Figure 3 The docking assembly 5 includes an upper retaining ring 501 and two fixing structures 502, the two fixing structures 502 being used to mount the upper retaining ring 501 on top of the lower retaining ring 10;

[0042] The fixing structure 502 is installed at both ends of the upper retaining ring 501. The fixing structure 502 is used to connect the two ends of the lower retaining ring 10 and the two ends of the upper retaining ring 501 together.

[0043] Please refer to Figure 2 and Figure 4 The shock-absorbing base frame 1 includes a base plate 101 and a plurality of shock-absorbing components 102, wherein the plurality of shock-absorbing components 102 are used to install the quick-release assembly 2 on the top of the base plate 101;

[0044] The damping component 102 has a damper inside, which can play a damping role.

[0045] Please refer to Figure 2 and Figure 4 The quick-release assembly 2 includes a fixing plate 201, fixing bolts 202, mounting bracket 203 and docking bracket 204. The mounting bracket 203 is installed on the top of the fixing plate 201, and the fixing bolts 202 pass through one side of the mounting bracket 203 to install the docking bracket 204 inside the mounting bracket 203.

[0046] The fixing bolt 202 and the docking bracket 204 are threaded on one side.

[0047] The working principle of the flow channel mounting structure for thermal power units provided by this utility model is as follows:

[0048] The entire flow channel is divided into a first flow channel pipe 4 and a second flow channel pipe 8. A corrugated compensator 7 is installed at the adjacent end of the first flow channel pipe 4 and the second flow channel pipe 8 through a flange connection structure 6. The corrugated compensator 7 can absorb the radial slight displacement at the same time and facilitate the installation of the flow channel pipe. The buffer ring 11 is fixed on the outer surface of the two flange connection structures 6 by the lower retaining ring 10 and the docking assembly 5, which can increase the stability of the connection. At the same time, with the support 3 and the quick release assembly 2, the flange connection structure 6 can be quickly installed and fixed, while providing stable support. The buffer ring 11 can ensure the stability of the connection between the lower retaining ring 10 and the docking assembly 5. When the flow channel is heated and elongated, the corrugated structure of the corrugated compensator 7 is axially stretched. When it is cooled and shortened, the corrugated structure contracts. The deformation is absorbed by elastic deformation throughout the process, so that the stress of the flow channel body is controlled within the allowable stress of the material.

[0049] Compared with related technologies, the flow channel mounting structure for thermal power units provided by this utility model has the following advantages:

[0050] To enhance the stability and ease of installation of the flow channel for the thermal power unit, the entire flow channel is divided into a first flow channel pipe 4 and a second flow channel pipe 8. A corrugated compensator 7 is installed at the adjacent end of the first flow channel pipe 4 and the second flow channel pipe 8 via a flange connection structure 6. The corrugated compensator 7 can simultaneously absorb minor radial misalignment and facilitate the installation of the flow channel pipe. A buffer ring 11 is fixed to the outer surface of the two flange connection structures 6 using a lower retaining ring 10 and a mating assembly 5, increasing connection stability. Furthermore, in conjunction with the bracket 3 and quick-release assembly 2, the flange connection structure 6 can be quickly installed. The design provides a fixed and stable support, while the buffer ring 11 ensures the stability of the connection between the lower retaining ring 10 and the docking assembly 5. When the flow channel expands due to heat, the corrugated structure of the corrugated compensator 7 is axially stretched; when it shrinks due to cold, the corrugated structure contracts. Throughout the process, the deformation is absorbed by elastic deformation, keeping the stress of the flow channel body within the allowable stress of the material. This design greatly improves the sealing reliability of the flow channel, significantly reduces the leakage rate at the interface, and is suitable for high-temperature and high-pressure conditions. Installation and maintenance are optimized, the weight of a single flow channel section is reduced, large hoisting equipment is not required, and local damage can be replaced individually, reducing maintenance costs.

[0051] Second Embodiment

[0052] Please refer to the following: Figures 5-6 , Figure 5 A schematic diagram of the second embodiment of the flow channel mounting structure for a thermal power unit provided by this utility model; Figure 6 Provided for this utility model Figure 5The enlarged view at point C shows a flow channel mounting structure for a thermal power unit based on the first embodiment of this application. The second embodiment of this application proposes another flow channel mounting structure for a thermal power unit. The second embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the independent implementation of the first embodiment.

[0053] Specifically, the difference in the flow channel mounting structure for the thermal power unit provided in the second embodiment of this application is that, please refer to... Figure 5 and Figure 6 The quick-release assembly 2 has a flow port 14 at the top and an intercepting plate 13 at the bottom.

[0054] The flow port 14 passes through the top and bottom of the fixing plate 201 in the quick-release assembly 2, and the intercepting plate 13 can play a filtering role.

[0055] Please refer to Figure 5 and Figure 6 The quick-release assembly 2 is equipped with a heat dissipation assembly 12 on its top. The heat dissipation assembly 12 includes a mounting ring 121 and a heat dissipation component 122. The mounting ring 121 is used to install the heat dissipation component 122 on the top of the quick-release assembly 2.

[0056] The heat dissipation component 122 can control the rotation speed as needed.

[0057] Compared with related technologies, the flow channel mounting structure for thermal power units provided by this utility model has the following advantages:

[0058] To facilitate rapid heat dissipation of the corrugated compensator 7 in high-temperature environments, a flow port 14 is opened at the bottom of the quick-release assembly 2. Then, the heat dissipation assembly 12 and the interception plate 13 are installed above and below the flow port 14. When heat dissipation is required, the heat dissipation assembly 12 is activated to increase air flow and blow the cold air below towards the corrugated compensator 7, which can accelerate the cooling of the corrugated compensator 7.

[0059] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A flow channel mounting structure for a thermal power unit, characterized in that, include: Shock-absorbing chassis; The quick-release assembly is installed on the top of the shock-absorbing base frame. Two brackets are installed on the top of the quick-release assembly. A lower retaining ring is fixedly connected to the top of each of the two brackets. A docking assembly is installed on the top of each lower retaining ring. A flange connection structure is installed between the docking assembly and the lower retaining ring through a buffer ring. A corrugated compensator is installed between the two flange connection structures. A first flow channel pipe is installed at one end of one of the flange connection structures, and a second flow channel pipe is installed at the other end of the other flange connection structure.

2. The flow channel mounting structure for a thermal power unit according to claim 1, characterized in that, A crossbar is installed between the two brackets, and a support assembly is installed on the top of the crossbar.

3. The flow channel mounting structure for a thermal power unit according to claim 2, characterized in that, The support assembly includes a stabilizer and a support ring, the stabilizer being used to mount the support ring on top of the crossbar.

4. The flow channel mounting structure for a thermal power unit according to claim 1, characterized in that, The docking assembly includes an upper retaining ring and two fixing structures for mounting the upper retaining ring on top of the lower retaining ring.

5. The flow channel mounting structure for a thermal power unit according to claim 1, characterized in that, The shock-absorbing base includes a base plate and multiple shock-absorbing components, which are used to mount quick-release assemblies on top of the base plate.

6. The flow channel mounting structure for a thermal power unit according to claim 1, characterized in that, The quick-release assembly includes a fixing plate, fixing bolts, a mounting bracket, and a docking bracket. The mounting bracket is mounted on top of the fixing plate, and the fixing bolts pass through one side of the mounting bracket to install the docking bracket inside the mounting bracket.

7. The flow channel mounting structure for a thermal power unit according to claim 1, characterized in that, The quick-release assembly has a flow port at the top and an interception plate at the bottom.

8. The flow channel mounting structure for a thermal power unit according to claim 1, characterized in that, A heat dissipation assembly is mounted on the top of the quick-release assembly. The heat dissipation assembly includes a mounting ring and a heat dissipation component. The mounting ring is used to mount the heat dissipation component on the top of the quick-release assembly.

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