Thermal power plant generator stator cooling water dosing and mixing device

Abstract

The invention discloses a thermal power plant generator stator cooling water dosing and mixing device, which comprises a box body, a guide rail arranged at the bottom of the box body, slide racks capable of moving along the guide rail and slide boxes, transmission parts are arranged between the slide racks and the slide boxes, and the slide boxes are driven to unfold one by one by rotating a rotating shaft of the slide racks, so that slides are convenient to find. The inner space of the box body is divided into a searching area and a storage area, the storage area is used for placing slides for a long time, and the searching area is used for moving a slide rack to the area for examination.

Description

Technical Field

[0001] The invention relates to the technical field of dosing and mixing, in particular to a dosing and mixing device for cooling water of a generator stator in a thermal power plant. Background Art

[0002] During the operation of a thermal power plant, the generator stator coil generates heat due to losses. This heat needs to be removed through the cooling water system to ensure the normal operation of the generator and extend its service life. The traditional generator stator cooling water system mainly adopts a bypass small mixed bed treatment process. The pH value of the stator cooling water is between 6.5 and 7.5 for a long time, which leads to a more prominent corrosion problem of the copper wire rods of the generator. To solve this problem, water replacement and ion exchange are usually used to reduce the copper content. However, these methods do not fundamentally inhibit the occurrence of copper wire rod corrosion. In addition, the daily operation workload is heavy and the copper content frequently exceeds the standard. In the generator stator cooling water system, increasing the pH value is one of the effective means to inhibit copper wire rod corrosion.

[0003] The existing dosing mixing device does not have an ideal mixing effect. The liquid medicine and the treated water leave the mixing zone if they are not fully mixed, which affects the stability and reliability of the dosing effect. Furthermore, the existing mixing equipment will be corroded after long-term use, which will affect the mixing of the medicines. At the same time, the entire pipeline needs to be removed when replacing it, which greatly increases the time spent on replacement and greatly reduces work efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the mixing effect of the dosing mixing device is not ideal, and the mixing equipment will be corroded after long-term use, which will affect the mixing of the reagents. At the same time, the entire pipeline needs to be removed when replacing it, which greatly increases the time consumed during replacement and greatly reduces work efficiency.

[0005] The above technical problems are solved by the following technical solutions: The present invention proposes a dosing and mixing device for the stator cooling water of a thermal power plant generator, which includes a mixing element, which includes a connecting plate and extension plates arranged on both sides of the connecting plate. Drain holes are provided on one side of the connecting plate and the extension plate, and the drainage holes are staggered. Limiting bins are provided on both sides of the connecting plate, and a group of mounting grooves are provided on the inner walls of the limiting bins.

[0006] In a preferred embodiment of the stator cooling water dosing and mixing device for a thermal power plant generator of the present invention: a reset member is arranged inside the mixing member, and the reset member includes a fixed rod arranged inside the mounting groove, a reset spring sleeved with the fixed rod, one end of the reset spring is fixedly mounted on the inner wall of the mounting groove, and the other end of the reset spring is fixedly mounted on one side of the extension plate.

[0007] In a preferred embodiment of the stator cooling water dosing and mixing device for a thermal power plant generator of the present invention: a sealing member is fixedly installed on the top of the mixing member, and the sealing member includes a connecting block arranged on the top of the connecting plate, a sealing block fixedly connected to the top of the connecting block, and a sealing ring arranged at the bottom of the sealing block.

[0008] In a preferred embodiment of the stator cooling water dosing and mixing device for a thermal power plant generator of the present invention, a connecting member is fixed on the top of the sealing member, and the connecting member includes a fixing plate arranged on the top of the sealing block and a connecting rod arranged on one side of the fixing plate.

[0009] In a preferred embodiment of the stator cooling water dosing and mixing device for a thermal power plant generator of the present invention: a pipeline component is arranged on the outside of the mixing component, the pipeline component includes a delivery pipe arranged on the outside of the connecting plate, a group of limiting holes are opened on the outside of the delivery pipe, flanges are provided at both ends of the delivery pipe, a dosing pipe is fixedly connected to the outside of the delivery pipe, and one end of the dosing pipe passes through the delivery pipe and extends into the interior of the delivery pipe.

[0010] In a preferred embodiment of the stator cooling water dosing and mixing device for a thermal power plant generator of the present invention: the top and bottom of the connecting plate are both arc-shaped, the limit bin is adapted to the extension plate, and one side of the extension plate is set to be arc-shaped.

[0011] In a preferred embodiment of the device for adding and mixing chemicals for stator cooling water of a thermal power plant generator of the present invention: the drainage holes are all rectangular and pass through the connecting plate.

[0012] In a preferred embodiment of the device for adding chemicals and mixing cooling water for a generator stator in a thermal power plant according to the present invention, the sealing block is adapted to the limiting hole.

[0013] In a preferred embodiment of the device for adding chemicals and mixing chemicals to the stator cooling water of a thermal power plant generator of the present invention, a group of mixing elements are provided, and the mixing elements are arranged opposite to each other.

[0014] In a preferred embodiment of the device for adding chemicals and mixing cooling water for a generator stator in a thermal power plant according to the present invention, the limiting hole is arc-shaped.

[0015] The beneficial effects of the present invention are: the medicine and condensed water can be mixed by setting the mixing element, which can effectively improve the mixing effect of the medicine and condensed water. At the same time, the setting of the sealing element can increase the sealing performance, avoiding leakage of condensed water and medicine during the mixing process. At the same time, it can be effectively transported in conjunction with the delivery pipe. The limiting holes opened on the delivery pipe facilitate the installation and disassembly of the mixing element, which can facilitate the replacement of the mixing element at a later time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0017] Figure 1 The overall structure diagram of the stator cooling water dosing and mixing device of the generator in the thermal power plant is shown;

[0018] Figure 2 The schematic diagram of the piping structure of the stator cooling water dosing and mixing device of the thermal power plant generator is shown;

[0019] Figure 3 A cross-sectional view of the piping components of a chemical dosing and mixing device for the stator cooling water of a thermal power plant generator is shown;

[0020] Figure 4 A front view of the piping components of a chemical dosing and mixing device for the stator cooling water of a thermal power plant generator is shown;

[0021] Figure 5 A cross-sectional view of a mixing element of a stator cooling water dosing and mixing device for a thermal power plant generator is shown;

[0022] Figure 6 The figure shows the structural diagram of the connectors of the stator cooling water dosing and mixing device of the thermal power plant generator;

[0023] Figure 7 A schematic diagram showing the water flow direction of a stator cooling water dosing and mixing device for a thermal power plant generator is shown. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0025] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0026] Reference Figures 1 to 3The present embodiment provides a dosing and mixing device for the stator cooling water of a thermal power plant generator, comprising a mixing element 1, wherein the mixing element 1 comprises a connecting plate 11, and extension plates 12 arranged on both sides of the connecting plate 11. Drain holes 13 are provided on one side of the connecting plate 11 and the extension plate 12, and the drainage holes 13 are staggered. Limiting bins 14 are provided on both sides of the connecting plate 11, and a group of mounting grooves 15 are provided on the inner walls of the limiting bins 14, wherein the connecting plate 11 and the extension plate 12 are slidably connected, and the thickness of the connecting plate 11 is greater than the thickness of the extension plate 12.

[0027] Furthermore, a reset member 2 is provided inside the mixing element 1, and the reset member 2 includes a fixing rod 21 provided inside the mounting groove 15, a reset spring 22 sleeved with the fixing rod 21, one end of the reset spring 22 is fixedly mounted on the inner wall of the mounting groove 15, and the other end of the reset spring 22 is fixedly mounted on one side of the extension plate 12.

[0028] Furthermore, a seal 3 is fixedly installed on the top of the mixing element 1. The seal 3 includes a connecting block 31 arranged on the top of the connecting plate 11, a sealing block 32 fixedly connected to the top of the connecting block 31, and a sealing ring 33 arranged at the bottom of the sealing block 32.

[0029] Preferably, the limit bins 14 provided on both sides of the connecting plate 11 facilitate the installation and storage of the extension plate 12, and can be retracted when installed inside the water inlet pipe, making it easier to install the mixing element 1. At the same time, the setting of the reset spring 22 in the reset element 2 enables the extension plate 12 to be quickly reset, and can be quickly reset after being installed into the water pipe, thereby enhancing the mixing effect of the mixing element 1 inside the water pipe. Further, the setting of the sealing element 3 can enhance the sealing effect. At the same time, the setting of the connecting block 31 can connect the mixing element 1 and the sealing element 3. At the same time, the setting of the sealing ring 33 can enhance the sealing between the sealing element 3 and the pipe member 5, thereby avoiding leakage during use.

[0030] When in use, first squeeze the extension plate 12 in the direction close to the connecting plate 11, so that the extension plate 12 is completely retracted into the limiting chamber 14. At the same time, the extension plate 12 squeezes the return spring 22 during the process of moving toward the limiting chamber 14. The return spring 22 is elastically deformed under pressure and retracts into the installation groove 15. Further, the connecting plate 11 is inserted into the conveying pipe 51 through the limiting hole 52. When the return spring 22 is not subjected to force, the return spring 22 is reset. Further, the return spring 22 pushes the extension plate 12 outward during the resetting process, and the extension plate 12 is reset under the action of the return spring 22.

[0031] Reference Figures 4-5 As an optional embodiment, the sealing member 3 includes a top fixing connector 4, the connector 4 includes a fixing plate 41 arranged on the top of the sealing block 32, and a connecting rod 42 arranged on one side of the fixing plate 41.

[0032] Furthermore, a pipe component 5 is provided on the outside of the mixing element 1, and the pipe component 5 includes a delivery pipe 51 provided on the outside of the connecting plate 11. A group of limiting holes 52 are opened on the outside of the delivery pipe 51, and flanges 53 are provided at both ends of the delivery pipe 51. A dosing pipe 54 is fixedly connected to the outside of the delivery pipe 51, and one end of the dosing pipe 54 passes through the delivery pipe 51 and extends into the interior of the delivery pipe 51.

[0033] Furthermore, the top and bottom of the connecting plate 11 are both arc-shaped, the limiting compartment 14 is adapted to the extension plate 12, and one side of the extension plate 12 is set to be arc-shaped.

[0034] Preferably, the setting of the connecting piece 4 facilitates the connection of multiple mixing pieces 1. The setting of multiple mixing pieces 1 can mix the medicine and condensed water more efficiently. At the same time, the delivery pipe 51 is mainly used for the delivery of condensed water. The further setting of the dosing pipe 54 facilitates the dosing of the condensed water inside the delivery pipe 51 to ensure that the pH value of the condensed water is at an appropriate value. Furthermore, the top and bottom of the connecting plate 11 are both set to arc shape in order to better fit the pipeline. At the same time, the connecting plate 11 and the extension plate 12 cooperate to form a circle. The connecting plate 11 and the extension plate 12 include but are not limited to being circular.

[0035] Furthermore, the drainage holes 13 are all rectangular and pass through the connecting plate 11 .

[0036] Furthermore, the sealing block 32 is adapted to the limiting hole 52 .

[0037] Furthermore, a group of mixing elements 1 are provided, and the mixing elements 1 are arranged relative to each other.

[0038] Furthermore, the limiting hole 52 is arc-shaped.

[0039] When in use, first squeeze the extension plate 12 in the direction close to the connecting plate 11, so that the extension plate 12 is completely retracted into the limiting chamber 14. At the same time, the extension plate 12 squeezes the return spring 22 during the process of moving toward the limiting chamber 14. The return spring 22 is elastically deformed by the pressure and retracts into the installation groove 15. The connecting plate 11 is further inserted into the conveying pipe 51 through the limiting hole 52. The return spring 22 is reset when there is no force. The return spring 22 further pushes the extension plate 12 outward during the resetting process. The extension plate 12 is reset under the action of the return spring 22, and the sealing block 32 is further passed through The bolt is fixed at the limiting hole 52, which has a sealing effect on the limiting hole 52. The further delivery pipe 51 delivers condensed water, and the further dosing pipe 54 delivers the medicine. The condensed water and the medicine flow to the other end of the delivery pipe 51 through the drainage hole 13 opened on the connecting plate 11. When the liquid flows in the pipeline and suddenly encounters a narrow area, the flow rate will increase and the pressure will be lost due to the constant flow rate. According to Bernoulli's principle, the increase in flow rate leads to a decrease in pressure, forming turbulence in the narrow area. Turbulent flow is characterized by chaotic motion and contains vortex areas. The medicine and condensed water are further mixed under the action of turbulence and vortex, thereby improving the mixing efficiency and mixing effect.

[0040] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A device for adding chemicals and mixing cooling water for a generator stator in a thermal power plant, characterized by: include, A mixing element (1) comprising a connecting plate (11), and extension plates (12) arranged on both sides of the connecting plate (11); drainage holes (13) are provided on one side of the connecting plate (11) and the extension plate (12); the drainage holes (13) are provided in a staggered manner; and limiting bins (14) are provided on both sides of the connecting plate (11); and a group of mounting grooves (15) are provided on the inner walls of the limiting bins (14).

2. The device for adding chemicals and mixing cooling water for a generator stator in a thermal power plant according to claim 1, characterized in that: A reset member (2) is provided inside the mixing member (1), and the reset member (2) comprises a fixing rod (21) provided inside the mounting groove (15), a reset spring (22) sleeved with the fixing rod (21), one end of the reset spring (22) being fixedly mounted on the inner wall of the mounting groove (15), and the other end of the reset spring (22) being fixedly mounted on one side of the extension plate (12).

3. The device for adding chemicals and mixing cooling water for a generator stator in a thermal power plant according to claim 2, characterized in that: A sealing member (3) is fixedly installed on the top of the mixing member (1), and the sealing member (3) comprises a connecting block (31) arranged on the top of the connecting plate (11), a sealing block (32) fixedly connected to the top of the connecting block (31), and a sealing ring (33) arranged at the bottom of the sealing block (32).

4. The device for adding chemicals and mixing cooling water for a generator stator in a thermal power plant according to claim 3, characterized in that: A connecting member (4) is fixed on the top of the sealing member (3), and the connecting member (4) comprises a fixing plate (41) arranged on the top of the sealing block (32), and a connecting rod (42) arranged on one side of the fixing plate (41).

5. The device for adding chemicals and mixing cooling water for a generator stator in a thermal power plant according to claim 3, characterized in that: A pipe member (5) is provided on the outside of the mixing member (1), and the pipe member (5) includes a delivery pipe (51) provided on the outside of the connecting plate (11). A group of limiting holes (52) are provided on the outside of the delivery pipe (51), and flanges (53) are provided at both ends of the delivery pipe (51). A dosing pipe (54) is fixedly connected to the outside of the delivery pipe (51), and one end of the dosing pipe (54) passes through the delivery pipe (51) and extends into the interior of the delivery pipe (51).

6. The device for adding chemicals and mixing cooling water for a generator stator in a thermal power plant according to claim 1, characterized in that: The top and bottom of the connecting plate (11) are both arc-shaped, the limiting bin (14) is adapted to the extension plate (12), and one side of the extension plate (12) is configured to be arc-shaped.

7. The device for adding chemicals and mixing cooling water for a generator stator in a thermal power plant according to claim 6, characterized in that: The drainage holes (13) are all rectangular, and the drainage holes (13) pass through the connecting plate (11).

8. The device for adding chemicals and mixing chemicals to the stator cooling water of a thermal power plant generator according to any one of claims 4 to 5, characterized in that: The sealing block (32) is adapted to the limiting hole (52).

9. The device for adding chemicals and mixing chemicals to the stator cooling water of a thermal power plant generator according to claim 8, characterized in that: The mixing elements (1) are provided in a group, and the mixing elements (1) are arranged relative to each other.

10. The device for adding chemicals and mixing chemicals to the stator cooling water of a thermal power plant generator according to claim 5, characterized in that: The limiting hole (52) is arc-shaped.

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