Cooling water waste heat recycling device for thermal power plant

Abstract

The invention relates to the technical field of cooling water filtration, in particular to a thermal power plant cooling water waste heat recycling device which comprises a bearing assembly, and the bearing assembly comprises a storage tank and a bearing tank arranged above the storage tank; the filter assembly comprises an impeller frame arranged on the inner side of the bearing tank, the bearing assembly further comprises a drainage pipe arranged below the storage tank, a fixing ring is arranged on the outer side of the storage tank in a sleeving mode, supporting frames are arranged on the outer side of the fixing ring, and the supporting frames are arranged on the outer side of the fixing ring in a circumferential array mode; a top cover is arranged above the bearing tank, a water inlet pipe is arranged on the outer side of the bearing tank, and a water inlet is formed in the inner side of the water inlet pipe. And the cooling water can drive the filtering assembly to filter the cooling water through the falling impact force, so that impurities in the water are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cooling water filtration, in particular to a device for recovering waste heat from cooling water in a thermal power plant. Background Art

[0002] Waste heat recovery and utilization refers to the recycling and reuse of waste heat generated by industrial processes. The main technologies include heat exchange technology, heat-to-work conversion technology, and waste heat cooling and heating technology. At present, my country's energy utilization still has major problems such as low utilization efficiency, poor economic benefits, and great pressure on the ecological environment. Energy conservation and emission reduction, reducing energy consumption, and improving the comprehensive utilization rate of energy are important contents of energy development strategic planning. They are the fundamental way to solve my country's energy problems and are in a position of priority development. The goal of achieving energy conservation and emission reduction and improving energy utilization efficiency mainly depends on the industrial field.

[0003] Power plants use seawater to provide cooling water for turbine condensers and other auxiliary cooling equipment. However, small impurities such as garbage particles in seawater can enter the condenser titanium tubes, causing blockage of the tubes, reducing the condenser's heat exchange efficiency, and affecting the use of the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a thermal power plant cooling water waste heat recovery and utilization device, the purpose of which is to solve

[0005] The above technical problems are solved by the following technical solutions: The present invention proposes the following technical solutions: A thermal power plant cooling water waste heat recovery and utilization device, which includes a bearing assembly, the bearing assembly includes a storage tank, a bearing tank arranged above the storage tank; and,

[0006] The filter assembly includes an impeller frame arranged inside the carrying tank.

[0007] As a preferred embodiment of the thermal power plant cooling water waste heat recovery device of the present invention: the supporting assembly also includes a drain pipe arranged below the storage tank, a fixing ring is provided on the outer side of the storage tank, a support frame is provided on the outer side of the fixing ring, and a circular array of the support frame is arranged on the outer side of the fixing ring.

[0008] As a preferred embodiment of the thermal power plant cooling water waste heat recovery device of the present invention: a top cover is provided above the carrier tank, a water inlet pipe is provided on the outside of the carrier tank, and a water inlet is provided on the inside of the water inlet pipe.

[0009] As a preferred embodiment of the thermal power plant cooling water waste heat recovery and utilization device of the present invention: the filter assembly also includes an impeller arranged on the inner side of the impeller frame, the impeller circumferential array is arranged on the inner side of the impeller frame, the inner side of the impeller frame is provided with a connecting rod, and the outer side of the connecting rod is provided with a scraper.

[0010] In a preferred embodiment of the thermal power plant cooling water waste heat recovery device of the present invention, a filter plate is provided on the inner side of the carrying tank, and the scraper slides on the end surface of the filter plate.

[0011] As a preferred embodiment of the thermal power plant cooling water waste heat recovery and utilization device of the present invention: it also includes: a transmission component, the transmission component includes a transmission rod arranged above the top cover, a first pulley is provided above the transmission rod, and a cover plate is provided above the first pulley.

[0012] As a preferred embodiment of the thermal power plant cooling water waste heat recovery device of the present invention: a second pulley is provided on the inner side of the cover plate, an operating rod is provided below the second pulley, and a belt is provided between the first pulley and the second pulley.

[0013] As a preferred embodiment of the thermal power plant cooling water waste heat recovery device of the present invention: it also includes: a rolling assembly, the rolling assembly includes a bearing plate arranged below the operating rod, a fixed plate is provided below the bearing plate, a connecting tube is provided at one end of the fixed plate, and a filter hole is provided on the outside of the connecting tube.

[0014] As a preferred embodiment of the thermal power plant cooling water waste heat recovery and utilization device of the present invention: a discharge pipe is provided on the inner side of the storage tank, a discharge barrel is provided above the discharge pipe, and a gear ring is provided above the discharge barrel.

[0015] As a preferred embodiment of the device for recovering waste heat from cooling water in a thermal power plant of the present invention: a gear is provided at one end of the filter hole, and the gear is meshedly connected with a gear ring.

[0016] The beneficial effect of the present invention is that by allowing cooling water to enter the storage tank through the water inlet on the water inlet pipe, when the cooling water passes through the water inlet pipe and falls, the cooling water will drive the filter assembly to filter the cooling water through the impact force of its falling, thereby reducing impurities in the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 This is a diagram showing the overall components of the present invention.

[0019] Figure 2 It is a cross-sectional view of the overall components in the present invention.

[0020] Figure 3 For the present invention Figure 2Magnified image of .

[0021] Figure 4 This is a diagram showing the transmission assembly of the present invention.

[0022] Figure 5 For the present invention Figure 4 Magnified image of . DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] Reference Figure 1 This embodiment provides a thermal power plant cooling water waste heat recovery and utilization device, including a carrier assembly 1, the carrier assembly 1 including a storage tank 11 and a carrier tank 13 arranged above the storage tank 11; and the carrier assembly 1 and the filter assembly 2 have a simple structure and a small number of parts, which facilitates processing, manufacturing, installation and maintenance, thereby reducing the initial investment and subsequent operation and maintenance costs of the equipment.

[0026] The filter assembly 2 includes an impeller frame 21 arranged on the inner side of the carrier tank 13. The filter assembly 2 is driven by the impact force of the cooling water falling from the water inlet pipe, and impurity filtration is completed simultaneously during the water flow transportation process, thereby reducing the suspended impurities in the cooling water, providing a clean water source for subsequent waste heat recovery or recycling, and reducing the risk of wear and blockage of equipment by impurities. The power of the filter assembly 2 is completely dependent on the falling impact force of the cooling water itself, and no additional power source such as a motor is required, which significantly reduces energy consumption and meets the energy-saving and consumption-reducing needs of thermal power plants.

[0027] The load-bearing assembly 1 also includes a drain pipe 111 arranged below the storage tank 11. A fixing ring 12 is provided on the outside of the storage tank 11, and a support frame 121 is provided on the outside of the fixing ring 12. The support frames 121 are arranged in a circular array on the outside of the fixing ring 12. Through the circumferential array design of the fixing ring 12 and the support frames 121, uniform support is provided for the storage tank, thereby enhancing the overall structural stability of the device and adapting to the impact load during continuous delivery of cooling water.

[0028] A top cover 131 is provided on the upper portion of the carrying tank 13 . A water inlet pipe 14 is provided on the outer side of the carrying tank 13 . A water inlet 141 is provided on the inner side of the water inlet pipe 14 .

[0029] Usage process: First, the cooling water enters the storage tank 11 through the water inlet 141 on the water inlet pipe 14. When the cooling water passes through the water inlet pipe 14 and falls, the cooling water will drive the filter component 2 to filter the cooling water through the impact force of its falling, thereby reducing impurities in the water.

[0030] Example 2, reference Figures 1 to 4 , which is the second embodiment of the present invention. Different from the previous embodiment, it also includes a filter assembly 2 and an impeller arranged on the inner side of the impeller frame 21. The impeller circumferential array is arranged on the inner side of the impeller frame 21. The inner side of the impeller frame 21 is provided with a connecting rod 24, and the outer side of the connecting rod 24 is provided with a scraper 22. The filter plate 23 serves as the core filtering component, which can intercept impurities with smaller particle sizes and improve the purification accuracy of cooling water. At the same time, the water flow is first filtered by the filter plate, and then the scraper 22 is driven by the impeller to operate, forming a "filtration-anti-blocking" synergistic mechanism to avoid the decrease in filtration efficiency caused by the accumulation of impurities.

[0031] A filter plate 23 is provided on the inner side of the carrying tank 13, and the scraper 22 slides on the end face of the filter plate 23. Large particles of impurities are pushed by the scraper 22 to perform circular motion, forming a concentrated accumulation area at the edge of the filter plate, which is convenient for subsequent targeted cleaning, avoids local excessive blockage caused by disordered distribution of impurities, and improves the controllability of impurity treatment.

[0032] Usage process: When the cooling water enters the storage tank 11 through the water inlet 141 in the water inlet pipe 14, the falling cooling water will pass through the filter plate 23, and the cooling water will be filtered by the filter plate 23. The falling cooling water will also impact the impeller with its strong impact force. At this time, the impacted impeller will rotate, and the rotating impeller will drive the inner connecting rod 24 to rotate. After the connecting rod 24 rotates, the connecting rod 24 will drive the outer scraper 22 to rotate. The rotating scraper 22 will move the larger particles of impurities in the cooling water and push them to perform circular motion, so as to prevent them from clogging the filter plate 23 and affecting the normal use of the device.

[0033] Example 3, reference Figures 1 to 4 , which is the third embodiment of the present invention. Different from the previous embodiment, it further includes a transmission assembly 3. The transmission assembly 3 includes a transmission rod 31 arranged above the top cover 131, a first pulley 32 is provided above the transmission rod 31, and a cover plate 35 is provided above the first pulley 32.

[0034] A second pulley 34 is provided on the inner side of the cover plate 35, and an operating lever is provided below the second pulley 34. A belt 33 is provided between the first pulley 32 and the second pulley 34. The transmission assembly 3 adopts a transmission method of the first pulley 32, the second pulley 34 and the belt 33. The transmission is smooth and low-noise, and the belt 33 transmission has a buffering and vibration-absorbing effect, which can adapt to the power fluctuations caused by the impact of water flow, ensuring the stable operation of the connecting tube 42.

[0035] It also includes a rolling assembly 4, which includes a supporting plate 411 arranged below the operating rod, a fixing plate 4111 is provided below the supporting plate 411, a connecting tube 42 is provided at one end of the fixing plate 4111, and a filtering hole 421 is provided on the outside of the connecting tube 42.

[0036] A discharge pipe 45 is provided on the inside of the storage tank 11, and a discharge barrel 44 is provided above the discharge pipe 45, and a gear ring 441 is provided above the discharge barrel 44. A gear 43 is provided at one end of the filter hole 421, which is meshed with the gear ring 441. In the rolling assembly 4, the connecting barrel 42 realizes a compound motion of "swinging and rotating" through the meshing of the gear 43 and the gear ring 441. The agglomerated drug is repeatedly impacted and decomposed in the connecting barrel 42, forming fine particles that are evenly dispersed through the filter hole 421, ensuring that the drug and the cooling water are fully mixed, avoiding local concentrations that are too high or insufficient due to drug agglomeration, and significantly improving the sterilization and algaecide effect.

[0037] Among them, chemicals need to be added to the cooling water to eliminate bacteria and algae in the cooling water.

[0038] Oxidizing bactericide and algaecide

[0039] Chlorine: Chlorine gas produces strong oxidizing substances, such as hypochlorous acid, which oxidizes enzymes in microorganisms that are closely related to metabolism, thereby killing the microorganisms. However, chlorine gas may chlorinate trace organic compounds during use, resulting in certain toxicity and corrosiveness to equipment.

[0040] Chlorine dioxide: It has strong bactericidal ability and can effectively kill bacteria, algae and other microorganisms. The chlorine and chlorine dioxide composite gas produced can achieve continuous sterilization and algae removal.

[0041] Sodium hypochlorite: Similar to chlorine, it kills bacteria by releasing hypochlorous acid. It is relatively easy to use, but it also has problems such as corrosion of equipment.

[0042] Chlorinated isocyanuric acid: has good bactericidal effect and good stability under certain conditions.

[0043] Non-oxidizing bactericide and algaecide

[0044] Quaternary ammonium salts, such as dodecyldimethylbenzyl ammonium chloride, have broad-spectrum, highly effective bactericidal and algaecidal properties, effectively controlling bacterial and algal growth and slime growth in water, and are excellent at removing slime. However, microorganisms are prone to developing resistance to them, and they produce a lot of foam during use.

[0045] Glutaraldehyde: It is an effective non-oxidizing fungicide that can kill a variety of microorganisms.

[0046] Isothiazolinone: It has good bactericidal effect and is not easy to cause microorganisms to develop drug resistance.

[0047] Quaternary phosphate salts: such as tetrakis (hydroxymethyl) phosphonium sulfate, are new non-oxidizing bactericides and algaecides with good bactericidal properties.

[0048] Composite fungicide and algaecide

[0049] SD-86 bactericide and algaecide: can be used for bactericidal and algaecidal treatment of cooling water systems.

[0050] THIF-229 bactericidal algaecide: It is a cationic surfactant with broad-spectrum and high-efficiency bactericidal and algaecidal capabilities. It can effectively control the reproduction of bacteria and algae and the growth of slime in water, and has good slime stripping effect and certain dispersing and penetrating effects.

[0051] In actual use, it is usually necessary to select appropriate agents based on the specific characteristics of the cooling water system and the growth of bacteria and algae, and adopt the method of alternating the addition of oxidizing and non-oxidizing bactericidal algaecides to achieve better bactericidal and algaecidal effects while avoiding the development of drug resistance in microorganisms.

[0052] Among them, some medicines may cause problems such as clumping when stored for a long time.

[0053] Oxidizing bactericide and algaecide

[0054] Solid active bromine fungicide algaecide: It must be stored to prevent moisture and caking.

[0055] SGR0705 oxidizing bactericidal algaecide: Store in a cool and dry place. Avoid moisture, otherwise it will clump.

[0056] HL-501 oxidizing fungicide: Store in a cool, dry place indoors. The content will decrease with increasing temperature and prolonged storage time, but it is not clearly mentioned whether it will agglomerate.

[0057] Non-oxidizing bactericide and algaecide

[0058] SM-991Y solid active bromine fungicide algaecide: It must be stored in a cool and dry place to prevent moisture and caking.

[0059] Composite fungicide and algaecide

[0060] SGR0707 oxidizing bactericidal algaecide: Store in a cool and dry place. Avoid moisture, otherwise it will clump.

[0061] Usage process: When the medicine stored for a long time is agglomerated, the transmission rod 31 above is driven to rotate by the connecting rod 24, and the transmission rod 31 drives the first pulley 32 above to rotate, and then the belt 33 outside the first pulley 32 drives the second pulley 34 to rotate, and finally the operating shaft below the second pulley 34 rotates. When the operating shaft rotates, the fixed plate 4111 below is driven to rotate by the operating shaft, and the fixed plate 4111 drives the connecting cylinder 42 to swing in a circle. When the connecting cylinder 42 swings, the connecting cylinder 4 2 drives the gear 43 to swing in a circle. At this time, the gear 43 is meshed with the gear ring 441, causing the gear 43 to rotate during the swinging process. The gear 43 drives the connecting cylinder 42 to rotate. During the rotation of the connecting cylinder 42, the connecting cylinder 42 drives the medicine inside to rotate, so that the medicine hits the inner wall of the connecting cylinder 42 during the rotation, so that the agglomerated medicine is decomposed and dispersed into the discharge cylinder 44 and the discharge pipe 45 through the filter hole 421, and flows into the storage tank 11 to mix with the cooling water, thereby sterilizing and removing algae from the cooling water.

[0062] 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.

[0063] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0064] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0065] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for recovering waste heat from cooling water in a thermal power plant, characterized by: include, A carrying assembly (1), the carrying assembly (1) comprising a storage tank (11), a carrying tank (13) disposed above the storage tank (11); and The filter assembly (2) includes an impeller frame (21) arranged inside the carrying tank (13).

2. The thermal power plant cooling water waste heat recovery and utilization device according to claim 1, characterized in that: The bearing assembly (1) further comprises a drainage pipe (111) arranged below the storage tank (11); a fixing ring (12) is sleeved on the outer side of the storage tank (11); a support frame (121) is arranged on the outer side of the fixing ring (12); and the support frames (121) are arranged in a circumferential array on the outer side of the fixing ring (12).

3. The thermal power plant cooling water waste heat recovery and utilization device according to claim 2, characterized in that: A top cover (131) is provided above the carrying tank (13), a water inlet pipe (14) is provided on the outside of the carrying tank (13), and a water inlet (141) is provided on the inside of the water inlet pipe (14).

4. The thermal power plant cooling water waste heat recovery and utilization device according to claim 3, characterized in that: The filter assembly (2) further comprises an impeller arranged on the inner side of the impeller frame (21), the impeller circumferential array being arranged on the inner side of the impeller frame (21), a connecting rod (24) being provided on the inner side of the impeller frame (21), and a scraper (22) being provided on the outer side of the connecting rod (24).

5. The thermal power plant cooling water waste heat recovery and utilization device according to claim 4, characterized in that: A filter plate (23) is provided on the inner side of the carrying tank (13), and the scraper (22) slides on the end surface of the filter plate (23).

6. The thermal power plant cooling water waste heat recovery and utilization device according to claim 5, characterized in that: The invention also includes a transmission assembly (3), wherein the transmission assembly (3) includes a transmission rod (31) arranged above the top cover (131), a first pulley (32) is arranged above the transmission rod (31), and a cover plate (35) is arranged above the first pulley (32).

7. The thermal power plant cooling water waste heat recovery and utilization device according to claim 6, characterized in that: A second pulley (34) is provided on the inner side of the cover plate (35), an operating rod is provided below the second pulley (34), and a belt (33) is provided between the first pulley (32) and the second pulley (34).

8. The thermal power plant cooling water waste heat recovery and utilization device according to claim 7, characterized in that: The invention also includes a rolling assembly (4), wherein the rolling assembly (4) includes a bearing plate (411) provided below the operating rod, a fixing plate (4111) provided below the bearing plate (411), a connecting tube (42) provided at one end of the fixing plate (4111), and a filter hole (421) provided on the outer side of the connecting tube (42).

9. The thermal power plant cooling water waste heat recovery and utilization device according to claim 8, characterized in that: A discharge pipe (45) is provided on the inner side of the storage tank (11), a discharge barrel (44) is provided above the discharge pipe (45), and a gear ring (441) is provided above the discharge barrel (44).

10. The thermal power plant cooling water waste heat recovery and utilization device according to claim 9, characterized in that: A gear (43) is provided at one end of the filter hole (421), and the gear (43) is meshedly connected with a gear ring (441).

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