Energy-saving transformation structure of boiler feed pump

Abstract

The utility model discloses a boiler feed pump energy-saving transformation structure which comprises a booster pump, an inlet pipeline and an outlet pipeline, nuts are welded and fixed to the opposite faces of two flanges of an inlet and an outlet of the booster pump, the positions of the nuts correspond to the positions of flange holes, an inlet valve is installed in the inlet pipeline, and an outlet valve is installed in the outlet pipeline. An outlet valve is installed in the outlet pipeline, flange plates are fixedly welded to the opposite faces of the inlet pipeline and the outlet pipeline, and positioning screw pipes are fixedly welded to the inner walls of flange holes of the flange plates. Through the arrangement of the flange plate, the sealing pipe, the positioning screw pipe, the nut and the bolt, when the booster pump is disassembled, disassembly and assembly are convenient, and the operation efficiency is improved; through the arrangement of the first connecting lug, the first hanging buckle, the rotating block, the second connecting lug, the second hanging buckle, the chain and the rotating groove, the bolt is prevented from being lost during disassembly, when the bolt rotates, the rotating block rotates in the rotating groove, and the situation that normal rotation of the bolt is hindered by chain distortion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler feed pumps, and particularly relates to an energy-saving transformation structure for a boiler feed pump. Background Art

[0002] Boiler feed pumps are generally applicable to boiler feed water, factories, and high-lift water conveyance in cities; in salt factories, boiler feed pumps are not only important auxiliary equipment but also major power-consuming equipment. Due to reasons such as improper selection and poor use management, a large amount of energy loss is often caused, affecting the economic operation of salt factories. Under the market competition conditions of independent accounting and self-profit and loss in power plants, the energy-saving transformation of feed pumps is particularly important.

[0003] In related technologies, such as the Chinese patent with the application number: "201620847400.0" and the name: "Energy-saving transformation structure for a boiler feed pump", it includes: a boiler feed pump, with a boiler feed pump outlet valve and a boiler feed pump inlet valve respectively installed at the output end and the input end of the boiler feed pump, and an inlet main pipe valve is arranged on the inlet main pipe of the boiler feed pump; a booster pump, which is arranged on a bypass pipeline parallel to the inlet main pipe of the boiler feed pump, and a booster pump outlet valve and a booster pump inlet valve are respectively installed at the output end and the input end of the booster pump; an inverter and a control cabinet unit, which are connected to the booster pump, and a PID regulator is arranged inside the inverter and the control cabinet unit; a pressure sensor connected to the outlet main pipe of the boiler feed pump, and its signal output end is connected to the inverter and the control cabinet unit. The utility model can minimize the energy consumption of throttling loss, and enables the generator set to have good economy whether it is operating at full load or peak shaving. The cost of the entire structural transformation is low and the power-saving potential is high.

[0004] Although the above patent can save energy, when the booster pump needs to be repaired or replaced and disassembled, the steps are relatively cumbersome, affecting the operation efficiency, and during the disassembly and assembly process, bolts and nuts are extremely easy to lose, affecting normal installation and use. Content of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, one of the purposes of the present utility model is to provide an energy-saving transformation structure for a boiler feed pump. By setting a flange plate, a sealing pipe, a positioning screw pipe, a nut, and a bolt, when disassembling the front pump, since the nut is welded and fixed to the flange of the front pump, only by rotating the bolt to disengage it from the nut and the positioning screw pipe can the limit on the front pump be released, and the front pump can be disassembled. When installing, inserting the positioning screw pipe into the flange hole of the front pump can achieve quick positioning. At this time, the positioning screw pipe is associated with the internal thread of the nut, and only by using the bolt to thread-connect the positioning screw pipe and the nut through threading can the installation of the front pump be completed, which is convenient for disassembly and assembly and improves the operation efficiency; by setting a connecting ear 1, a hanging buckle 1, a rotating block, a connecting ear 2, a hanging buckle 2, a chain, and a rotating groove, the hanging buckle 1 and the hanging buckle 2 at both ends of the chain are respectively hung on the connecting ear 1 and the connecting ear 2, and the bolt is connected to the flange plate, avoiding the loss of the bolt during disassembly. When the bolt rotates, the rotating block rotates in the rotating groove, avoiding the chain from twisting and hindering the normal rotation of the bolt.

[0006] One of the purposes of the present utility model is realized by adopting the following technical solution: An energy-saving transformation structure for a boiler feed pump, comprising: a front pump, an inlet pipeline, and an outlet pipeline. The opposite surfaces of the two flanges at the inlet and outlet of the front pump are both welded and fixed with nuts, and the positions of the nuts correspond to the positions of the flange holes. An inlet valve is installed in the inlet pipeline, and an outlet valve is installed in the outlet pipeline. Flange plates are welded and fixed to the opposite surfaces of the inlet pipeline and the outlet pipeline, and positioning screw pipes are welded and fixed to the inner walls of the flange holes of the flange plates. Connecting ear 1 corresponding to the position of the flange hole is welded and fixed to the side wall of the flange plate, and a hanging buckle 1 is hung on the connecting ear 1. Bolts are thread-connected to the inner walls of the positioning screw pipes, a rotating groove is opened on the surface of the bolt handle of the bolt, a rotating block is rotatably connected to the inner wall of the rotating groove, a connecting ear 2 is fixedly connected to the rear wall of the rotating block, a hanging buckle 2 is hung on the connecting ear 2, and a chain is connected between the hanging buckle 1 and the hanging buckle 2.

[0007] According to the energy-saving transformation structure of a boiler feed pump described above, a frequency converter and a control cabinet unit are provided on the front pump, and a PID regulator is provided inside the frequency converter and the control cabinet unit.

[0008] According to the energy-saving transformation structure of a boiler feed pump described above, the frequency converter and the control cabinet unit are connected to the output end of a pressure sensor on the water outlet main pipe of the boiler feed pump.

[0009] For the energy-saving transformation structure of a boiler feed pump described above, the outer side walls of the positioning screw pipes are all slidably connected to the inner walls of the flange holes of the front pump.

[0010] According to the energy-saving transformation structure of a boiler feed pump described above, sealing pipes are fixedly connected to the inner walls of the ports of the outlet pipeline and the inlet pipeline.

[0011] According to the energy-saving transformation structure of a boiler feed pump described above, the internal threads of the nut and the positioning screw tube are both adapted to the external thread of the bolt.

[0012] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0014] Figure 1 is a three-dimensional view of an energy-saving transformation structure of a boiler feed pump of the present utility model;

[0015] Figure 2 is a three-dimensional view of the inlet pipeline of an energy-saving transformation structure of a boiler feed pump of the present utility model;

[0016] Figure 3 is a three-dimensional view of the booster pump of an energy-saving transformation structure of a boiler feed pump of the present utility model;

[0017] Figure 4 is a bolt structure diagram of an energy-saving transformation structure of a boiler feed pump of the present utility model;

[0018] Figure 5 is an enlarged view of part A of an energy-saving transformation structure of a boiler feed pump of the present utility model.

[0019] Legend Explanation:

[0020] 1. Booster pump; 2. Inlet pipeline; 3. Inlet valve; 4. Outlet pipeline; 5. Outlet valve; 6. Flange; 7. Connecting ear one; 8. Hanging buckle one; 9. Sealing pipe; 10. Positioning screw tube; 11. Nut; 12. Bolt; 13. Rotating block; 14. Connecting ear two; 15. Hanging buckle two; 16. Chain; 1201. Rotating groove. Detailed Embodiment

[0021] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0022] Refer to Figures 1-5The utility model embodiment is a boiler feed pump energy-saving transformation structure, which includes: a pre-pump 1, an inlet pipeline 2, and an outlet pipeline 4. The pre-pump 1 is provided with a frequency converter and a control cabinet unit, and a PID regulator is arranged in the frequency converter and the control cabinet unit. The frequency converter and the control cabinet unit are connected to the output end of the pressure sensor of the outlet main pipe of the boiler feed pump. The two flange opposite surfaces of the inlet and outlet of the pre-pump 1 are welded and fixed with nuts 11, and the positions of the nuts 11 correspond to the positions of the flange holes. The inner walls of the ports of the outlet pipeline 4 and the inlet pipeline 2 are fixed with sealing tubes 9, the inlet pipeline 2 is installed with an inlet valve 3, the outlet pipeline 4 is installed with an outlet valve 5, and the opposite surfaces of the inlet pipeline 2 and the outlet pipeline 4 are welded and fixed with flanges. 6. The inner wall of the flange hole of the flange 6 is welded and fixed with a positioning screw 10, and the outer wall of the positioning screw 10 is slidably connected with the inner wall of the flange hole of the front pump 1. The side wall of the flange 6 is welded and fixed with a connecting ear 7 corresponding to the position of the flange hole, and a hook 8 is hung on the connecting ear 7. The inner wall of the positioning screw 10 is threadedly connected with a bolt 12, and the internal threads of the nut 11 and the positioning screw 10 are adapted to the external threads of the bolt 12. A rotating groove 1201 is provided on the surface of the bolt handle of the bolt 12, and a rotating block 13 is rotatably connected to the inner wall of the rotating groove 1201. A connecting ear 2 14 is fixed to the rear wall of the rotating block 13, and a hook 2 15 is hung on the connecting ear 2 14. A chain 16 is connected between the hook 8 and the hook 2 15. Through the provided flange 6, sealing tube 9, positioning screw tube 10, nut 11, and bolt 12, when the pre-pump 1 is disassembled, since the nut 11 is welded and fixed to the flange of the pre-pump 1, it is only necessary to rotate the bolt 12 to disengage the nut 11 and the positioning screw tube 10 to release the limit of the pre-pump 1. When the pre-pump 1 is disassembled and installed, the positioning screw tube 10 can be inserted into the flange hole of the pre-pump 1 for quick positioning. At this time, the positioning screw tube 10 is associated with the internal thread of the nut 11, and it is only necessary to use the bolt 12 to penetrate the positioning screw tube 10 and the nut 11 through the screw. The pre-pump 1 can be installed by simply connecting the threads, which is convenient for assembly and disassembly and improves the operating efficiency. Through the arranged connecting ear 1 7, hook 1 8, rotating block 13, connecting ear 2 14, hook 2 15, chain 16, and rotating groove 1201, the hook 1 8 and the hook 2 15 at both ends of the chain 16 are respectively hung on the connecting ear 1 7 and the connecting ear 2 14, connecting the bolt 12 with the flange 6, avoiding the loss of the bolt 12 during disassembly. When the bolt 12 rotates, the rotating block 13 rotates in the rotating groove 1201, avoiding the distortion of the chain 16 to hinder the normal rotation of the bolt 12.

[0023] Working principle: During use, the frequency converter adjusts its operating frequency through pressure. When the generator set is operating at maximum load, the pressure sensor feeds back the pressure data required for use, and the frequency converter adjusts to the appropriate frequency for operation; when the generator set is operating for peak shaving, the pressure sensor feeds back the pressure data required for use, and the frequency converter adjusts to the current appropriate frequency for operation, so as to maintain the economic operation of the main pump of the boiler feed pump and the pre-pump 1.

[0024] When disassembling the pre-pump 1, since the nut 11 is welded and fixed to the flange of the pre-pump 1, only by rotating the bolt 12 to disengage it from the nut 11 and the positioning screw tube 10 can the limit on the pre-pump 1 be released, and the pre-pump 1 can be disassembled. When installing, the positioning screw tube 10 can be inserted into the flange hole of the pre-pump 1 for quick positioning. At this time, the positioning screw tube 10 is associated with the internal thread of the nut 11. Only by using the bolt 12 to threadedly connect the positioning screw tube 10 and the nut 11 through threading can the installation of the pre-pump 1 be completed. The disassembly and assembly are convenient, improving the operation efficiency. The hanging hooks one 8 and the hanging hooks two 15 at both ends of the chain 16 are respectively hung on the connecting ears one 7 and the connecting ears two 14, and the bolt 12 is connected to the flange plate 6, avoiding the loss of the bolt 12 during disassembly. When the bolt 12 rotates, the rotating block 13 rotates in the rotating groove 1201, preventing the chain 16 from twisting and hindering the normal rotation of the bolt 12.

[0025] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which the present invention pertains, various changes can be made without departing from the gist of the present invention.

Claims

1. A boiler feed pump energy-saving transformation structure, characterized in that: include: A front pump (1), an inlet pipeline (2), and an outlet pipeline (4); the two opposing flange surfaces of the inlet and outlet of the front pump (1) are welded and fixed with nuts (11); the positions of the nuts (11) correspond to the positions of the flange holes; an inlet valve (3) is installed in the inlet pipeline (2); an outlet valve (5) is installed in the outlet pipeline (4); the opposing surfaces of the inlet pipeline (2) and the outlet pipeline (4) are welded and fixed with flanges (6); the inner walls of the flange holes of the flanges (6) are welded and fixed with positioning screws (10); the side walls of the flanges (6) are welded and fixed with positioning screws (10); A connecting ear (7) corresponding to the position of the flange hole is fixedly connected, and a hook (8) is hung on the connecting ear (7). The inner wall of the positioning screw tube (10) is threadedly connected with a bolt (12). The surface of the bolt handle of the bolt (12) is provided with a rotation groove (1201). The inner wall of the rotation groove (1201) is rotatably connected with a rotation block (13). The rear wall of the rotation block (13) is fixedly connected with a connecting ear (14). A hook (15) is hung on the connecting ear (14). A chain (16) is connected between the hook (8) and the hook (15).

2. A boiler feed water pump energy-saving transformation structure according to claim 1, characterized in that: The front pump (1) is provided with a frequency converter and a control cabinet unit, and a PID regulator is arranged inside the frequency converter and the control cabinet unit.

3. A boiler feed water pump energy-saving transformation structure according to claim 2, characterized in that: The frequency converter and control cabinet unit are connected to the output end of the pressure sensor of the water outlet main pipe of the boiler feed water pump.

4. The energy-saving transformation structure of a boiler feed water pump according to claim 1 is characterized in that: The outer side walls of the positioning spiral tube (10) are slidably connected to the inner wall of the flange hole of the front pump (1).

5. The energy-saving transformation structure of a boiler feed water pump according to claim 1 is characterized in that: The inner walls of the ports of the outlet pipeline (4) and the inlet pipeline (2) are both fixedly connected with sealing tubes (9).

6. The energy-saving transformation structure of a boiler feed water pump according to claim 1 is characterized in that: The internal threads of the nut (11) and the positioning screw tube (10) are both adapted to the external threads of the bolt (12).

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