Generator cooling device

Abstract

The utility model relates to the field of motor cooling, and discloses a generator cooling device which comprises a shell, fins, an engine and a generator are arranged in the shell, an atomizing nozzle is installed on the shell and comprises a base body and a nozzle connected with the base body, a first cavity is formed in the base body and communicated with the outside through a water inlet hole, and a second cavity is formed in the first cavity and communicated with the outside through a water outlet hole. A first column body is movably arranged in the base body, a second cavity is formed in the first column body, the second cavity is communicated with the first cavity through the first hole, and a partition plate is connected to the end, close to the nozzle, of the first column body; a third cavity communicated with the first cavity is formed in the nozzle, a second column is arranged in the third cavity, the second column movably penetrates out of the third cavity and then is installed on the partition plate through an elastic piece, a second hole is formed in the partition plate, the second cavity is communicated with the third cavity through the second hole, and the third cavity is communicated with the outside through a third hole. The size of the water flow channel is changed step by step to trigger the turbulence effect and multiple dispersion of water molecules, and finally efficient atomization of the water molecules is achieved.

Description

Technical Field

[0001] The utility model relates to the field of generator cooling, in particular to a motor cooling device. Background Art

[0002] The emergency diesel generator set of a chemical plant is started in an emergency when a power outage occurs in the entire plant to ensure that the safety facilities and environmental protection facilities of the entire plant do not lose power. It is an important equipment to ensure the production safety and environmental safety of the chemical plant. The voltage, frequency and harmonics of the emergency diesel generator set must meet the standard requirements. If the power supply quality does not meet the standards, the electrical equipment cannot operate at the rated state, which may easily cause the safety and environmental protection facilities to fail.

[0003] The heat dissipation of the generator set is very important to ensure the normal operation of the generator. At present, some generator sets use air cooling, and the heat dissipation device is not efficient enough. The generator overheats during operation, and the heat dissipation rate is lower than the generator heating rate. The temperature exceeds the upper limit of the coil and triggers the protection of the generator set, resulting in the generator being unable to operate at maximum power, the power generation quality is insufficient, and it cannot provide a strong load, posing a hidden danger to safety and environmental protection equipment. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem of insufficient heat dissipation efficiency of the generator in the prior art and provide a generator cooling device. The device is used for cooling the generator. After the water flow enters the atomizing nozzle of the device, the fluid fluctuation is large, and the water flow can be atomized into smaller droplets, thereby effectively improving the cooling effect.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an atomizing nozzle, comprising a shell, in which fins, an engine, and a generator are arranged, wherein the shell is equipped with an atomizing nozzle for cooling the fins, and the atomizing nozzle comprises a base and a nozzle connected to the base, wherein the base has a first cavity, the first cavity is communicated with the outside through a water inlet hole, a first column is movably arranged in the base, a second cavity is arranged inside the first column, the second cavity is communicated with the first cavity through a first hole on the first column, and a partition is connected to one end of the first column close to the nozzle, and the first cavity on both sides of the partition is partitioned;

[0006] The nozzle has a third cavity inside, which is connected to the first cavity. A second column is arranged in the third cavity. The second column is installed on the partition through an elastic member after moving through the third cavity. A second hole is opened on the partition, which connects the second cavity with the third cavity. The third cavity is connected to the outside through the third hole.

[0007] After the cooling water enters the first cavity through the water inlet hole, the first column and the second column are driven to do reciprocating motion by the hydraulic power and the force of the elastic member. The water flows collide with each other in the first cavity, squeeze into the second cavity through the first hole for further collision, enter the third cavity through the second hole and are finally discharged. In this process, the cooling water undergoes continuous impact and extrusion, producing a homogenizing effect, which can continuously and stably break and atomize water molecules, making the droplets formed smaller, and the atomization effect uniform and stable. The smaller the droplets, the more evenly distributed they are on the fins and in the surrounding environment. The smaller the droplets, the larger their surface area, the faster they evaporate, the faster they take away heat, and the better the heat dissipation effect.

[0008] Preferably, the first cavity comprises a first section of the first cavity, a second section of the first cavity and a third section of the first cavity which are connected in sequence;

[0009] The water inlet hole is formed at one end of the base body connected to the water supply pipe, the first section of the first cavity is trumpet-shaped, the small end of which is connected to the water inlet hole, and the large end of which is connected to the second section of the first cavity, and the inner diameter of the connection between the first section of the first cavity and the water inlet hole is smaller than the inner diameter of the water inlet hole;

[0010] The second section of the first cavity and the third section of the first cavity are both cylindrical, the inner diameter of the second section of the first cavity is equal to the maximum inner diameter of the large end of the first section of the first cavity, the inner diameter of the third section of the first cavity is larger than the inner diameter of the second section of the first cavity, and the partition is located in the third section of the first cavity.

[0011] By adopting the above technical solution, after the cooling water enters the first section of the smaller first cavity from the relatively large water inlet hole, the inner diameter of the cavity increases rapidly, and the sudden change in cross-sectional area causes strong turbulence in the cooling water, causing water molecules to collide with each other and initially disperse the water flow.

[0012] Preferably, the length of the second section of the first cavity is greater than the sum of the lengths of the first section of the first cavity and the third section of the first cavity. With this solution, the water flow can generate more collisions in the second section of the longer first cavity.

[0013] Preferably, the second column includes a base and a rod portion connected to each other, wherein the rod portion includes a first rod portion and a second rod portion connected to each other, wherein the first rod portion is connected to the base, and the diameter of the first rod portion is smaller than the diameter of the second rod portion. With this solution, since there are two parts of unequal diameters in the rod portion, the gap between the first rod portion and the second rod portion and the inner wall of the third cavity changes, and this change causes the shear force of the cooling water to be extremely high when it flows through this place. The high shear force can further tear and refine the water flow, thereby enhancing the atomization effect.

[0014] Preferably, the base is located in the third section of the first cavity and is mounted on the partition through the elastic member, and the cross-sectional area of ​​the base is larger than the cross-sectional area of ​​the entrance of the third cavity it faces. With this solution, when the elastic member pushes the base to approach the third cavity, the base has a larger cross-sectional area, so that it is always in the third section of the first cavity, playing a limiting role.

[0015] Preferably, the third cavity includes a first section of the third cavity and a second section of the third cavity which are connected to each other, both of which are cylindrical, wherein the first section of the third cavity is connected to the third section of the first cavity, the second section of the third cavity is connected to the outside through the third hole, the inner diameter of the first section of the third cavity is smaller than the inner diameter of the second section of the third cavity, and a part of the second rod is located in the second section of the third cavity. With this solution, after the water flow enters the second section of the third cavity with a larger diameter from the first section of the third cavity, it will be impacted and dispersed again, thereby improving the atomization effect.

[0016] Preferably, the length of the first section of the third cavity is greater than the length of the second section of the third cavity. With this solution, the first section of the narrow third cavity is longer, and the cooling water will be subjected to high shear force for a longer time.

[0017] Preferably, the elastic member is a spring.

[0018] Preferably, each of the atomizing nozzles is connected to a water supply branch pipe through the water inlet hole, the water supply branch pipe is connected to a water supply main pipe, and the water supply main pipe is connected to a water tank.

[0019] Preferably, a flow control valve is installed on the water supply branch pipe, and a temperature sensor is installed in the shell.

[0020] Through the above technical scheme, a gradual cavity structure and a piston pressure equalization working principle are adopted, and the turbulence effect and multiple dispersion of water molecules are induced by gradually changing the size of the water flow channel, and finally the efficient atomization of water molecules is achieved. The obtained atomized droplets are finer, and the atomization effect is uniform and stable. The finer droplets are more evenly distributed on the fins and in the surrounding environment. The smaller the droplets, the larger their surface area, the faster they evaporate, the faster they take away heat, and the better the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the atomizing nozzle;

[0022] Figure 2 It is a structural schematic diagram of a generator cooling device.

[0023] Description of Reference Numerals

[0024] 1-base; 2-nozzle; 3-water inlet; 4-first cavity; 4a-first section of the first cavity; 4b-second section of the first cavity; 4c-third section of the first cavity; 5-third hole; 6-first column; 7-first hole; 8-second cavity; 9-partition; 10-second hole; 11-elastic member; 12-second column; 12a-second rod; 12b-first rod; 12c-base; 13-third cavity; 13a-second section of the third cavity; 13b-first section of the third cavity; A-water tank; B-water supply main pipe; C-water supply branch pipe; D-flow control valve; E-housing; F-engine; G-generator; H-fin. DETAILED DESCRIPTION

[0025] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the description of the present application, it should be understood that the terms "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0028] like Figure 1 and 2 As shown, a generator cooling device includes a shell E, in which fins H, an engine F, and a generator G are arranged. Atomizing nozzles for cooling the fins are installed on the shell E, each of the atomizing nozzles is respectively connected to a water supply branch pipe C, all the water supply branch pipes C are commonly connected to a water supply main pipe B, and the water supply main pipe B is connected to a water tank A.

[0029] A plurality of atomizing nozzles may be installed on the housing E around the fins H to achieve better heat dissipation and cooling.

[0030] To facilitate the control of water flow, a flow control valve D is installed on the water supply branch pipe C, and a temperature sensor is installed in the shell E. The temperature sensor is close to the fins. The temperature detected by the temperature sensor is transmitted to the PLC, and the flow control valve D is adjusted by the PLC to adjust the flow of cooling water.

[0031] The atomizing nozzle comprises a base body 1 and a nozzle 2 connected to the base body 1, wherein the base body 1 has a first cavity 4, and the first cavity 4 is connected to the outside through a water inlet hole 3, and a first column 6 is movably arranged in the base body 1, and a second cavity 8 is arranged inside the first column 6, and the second cavity 8 is connected to the first cavity 4 through a first hole 7 on the first column 6, and a partition 9 is connected to one end of the first column 6 close to the nozzle 2, and the first cavity 4 on the left and right sides of the partition 9 is separated, and the partition 9 also closes the second cavity 8;

[0032] The nozzle 2 has a third cavity 13 therein, and the third cavity 13 is connected to the first cavity 4, specifically to the first cavity 4 on the left side of the partition 9. A second column 12 is provided in the third cavity 13, and the second column 12 is installed on the partition 9 through an elastic member 11 after moving through the third cavity 13. A second hole 10 is opened on the partition 9, and the second hole 10 connects the second cavity 8 with the third cavity 13. The third cavity 13 is connected to the outside through the third hole 5.

[0033] In this example, during installation, the base 1 can be installed on the shell E, and a threaded connection is adopted between the base 1 and the nozzle 2. The third hole 5 of the nozzle 2 faces the fin H. Specifically, a connecting hole with an internal thread is provided at one end of the nozzle 2 for docking with the base 1, and an end of the base 1 for docking with the nozzle 2 has an external thread. The docking end of the base 1 is threadedly inserted into the connecting hole of the nozzle 2, and its end is tightly pressed against the bottom of the connecting hole of the nozzle 2. To ensure the sealing between the base 1 and the nozzle 2, a seal, such as an O-ring, can be installed between the base 1 and the nozzle 2. The first column 6 and the second column 12 form a piston rod-like structure in the space inside the base 1 and the nozzle 2, and the partition 9 plays a piston-like role. Under the water flow pressure and the force of the spring 11, the first column 6, the partition 9 and the second column 12 are driven to reciprocate.

[0034] The first cavity 4 includes a first section 4a of the first cavity, a second section 4b of the first cavity and a third section 4c of the first cavity which are connected in sequence, and their central axes coincide with each other. The length of the second section 4b of the first cavity is greater than the sum of the lengths of the first section 4a of the first cavity and the third section 4c of the first cavity. The water inlet hole 3 is provided at one end of the base 1 connected to the water supply pipe, and each of the atomizing nozzles is connected to one of the water supply branch pipes C through the water inlet hole 3, wherein the first section 4a of the first cavity is trumpet-shaped, the small end of the first section 4a of the first cavity is connected to the water inlet hole 3, and the large end thereof is connected to the second section 4b of the first cavity, and the inner diameter of the connection between the first section 4a of the first cavity and the water inlet hole 3 is smaller than the inner diameter of the water inlet hole 3.

[0035] The second section 4b of the first cavity and the third section 4c of the first cavity are both cylindrical, the inner diameter of the second section 4b of the first cavity is equal to the maximum inner diameter of the large end of the first section 4a of the first cavity, the inner diameter of the third section 4c of the first cavity is larger than the inner diameter of the second section 4b of the first cavity, the partition 9 is located in the third section 4c of the first cavity, and the edge of the partition 9 is tightly attached to the inner wall of the third section 4c of the first cavity.

[0036] The first column 6 is cylindrical, and its outer diameter is smaller than the diameter of the second section 4 b of the first cavity. A plurality of first holes 7 are distributed in a rectangular array on the column wall of the first column 6 , and the aperture of the second hole 10 is larger than that of the first hole 7 .

[0037] The second column 12 includes a base 12c and a rod portion that are interconnected, wherein the base 12c is located in the third section 4c of the first cavity and is installed on the partition 9 through the elastic member 11. The elastic member 11 can be of any form. In this example, the elastic member 11 is a spring, and the two ends of the spring are respectively fixed on the partition 9 and the base 12c. The cross-sectional area of ​​the base 12c is larger than the cross-sectional area of ​​the entrance of the third cavity 13 it faces. The central axis of the third cavity 13 coincides with the central axes of the first cavity 4 and the second cavity 8. Therefore, when the base 12c reciprocates along the axis of the first cavity under the action of water pressure power and the force of the elastic member, it can always remain in the third section 4c of the first cavity, and the movable extreme positions of the partition 9 and the base 12c limit the left and right movement positions of the first column 6 and the rod portion. The rod portion includes a first rod portion 12b and a second rod portion 12a which are connected to each other in a cylindrical shape, wherein the first rod portion 12b is connected to the base 12c, and a diameter of the first rod portion 12b is smaller than a diameter of the second rod portion 12a.

[0038] The third cavity 13 includes a first section 13b of the third cavity and a second section 13a of the third cavity which are connected to each other, both of which are cylindrical, the length of the first section 13b of the third cavity is greater than the length of the second section 13a of the third cavity, the first section 12b of the third cavity is connected to the third section 4c of the first cavity, the second section 13a of the third cavity is connected to the outside through the third hole 5, the inner diameter of the third hole 5 is smaller than the inner diameter of the water inlet hole 3, the inner diameter of the first section 13b of the third cavity is smaller than the inner diameter of the second section 13a of the third cavity, and a part of the second rod portion 12a is located in the second section 13a of the third cavity.

[0039] from Figure 1 It can also be seen that the gap between the first column 6 and the first cavity 4 is larger than the gap between the second column 12 and the third cavity 13 .

[0040] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. For example, the lifting structure can be changed to other mechanical lifting structures, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A generator cooling device, comprising a housing, in which fins, an engine and a generator are arranged, characterized in that: An atomizing nozzle for cooling the fins is installed on the shell, and the atomizing nozzle includes a base and a nozzle connected to the base, the base has a first cavity, the first cavity is connected to the outside through a water inlet hole, a first column is movably arranged in the base, the first column has a second cavity inside, the second cavity is connected to the first cavity through a first hole on the first column, and a partition is connected to one end of the first column close to the nozzle, and the first cavity on both sides of the partition is partitioned; The nozzle has a third cavity inside, which is connected to the first cavity. A second column is arranged in the third cavity. The second column is installed on the partition through an elastic member after moving through the third cavity. A second hole is opened on the partition, which connects the second cavity with the third cavity. The third cavity is connected to the outside through the third hole.

2. The generator cooling device according to claim 1, characterized in that: The first cavity comprises a first section of the first cavity, a second section of the first cavity and a third section of the first cavity which are connected in sequence; The water inlet hole is formed at one end of the base body connected to the water supply pipe, the first section of the first cavity is trumpet-shaped, the small end of which is connected to the water inlet hole, and the large end of which is connected to the second section of the first cavity, and the inner diameter of the connection between the first section of the first cavity and the water inlet hole is smaller than the inner diameter of the water inlet hole; The second section of the first cavity and the third section of the first cavity are both cylindrical, the inner diameter of the second section of the first cavity is equal to the maximum inner diameter of the large end of the first section of the first cavity, the inner diameter of the third section of the first cavity is larger than the inner diameter of the second section of the first cavity, and the partition is located in the third section of the first cavity.

3. The generator cooling device according to claim 2, characterized in that: The length of the second section of the first cavity is greater than the sum of the lengths of the first section of the first cavity and the third section of the first cavity.

4. The generator cooling device according to claim 2 or 3, characterized in that: The second column includes a base and a rod portion connected to each other, wherein the rod portion includes a first cylindrical rod portion and a second cylindrical rod portion connected to each other, wherein the first rod portion is connected to the base, and the diameter of the first rod portion is smaller than the diameter of the second rod portion.

5. The generator cooling device according to claim 4, characterized in that: The base is located in the third section of the first cavity and is mounted on the partition through the elastic member. The cross-sectional area of ​​the base is larger than the cross-sectional area of ​​the entrance of the third cavity it faces.

6. The generator cooling device according to claim 5, characterized in that: The third cavity includes a first section of the third cavity and a second section of the third cavity which are connected to each other, both of which are cylindrical, wherein the first section of the third cavity is connected to the third section of the first cavity, and the second section of the third cavity is connected to the outside through the third hole, the inner diameter of the first section of the third cavity is smaller than the inner diameter of the second section of the third cavity, and a portion of the second rod portion is located in the second section of the third cavity.

7. The generator cooling device according to claim 6, characterized in that: The length of the first section of the third cavity is greater than the length of the second section of the third cavity.

8. The generator cooling device according to any one of claims 1-3 and 5-7, characterized in that: The elastic member is a spring.

9. The generator cooling device according to claim 4, characterized in that: The elastic member is a spring.

10. The generator cooling device according to claim 8, characterized in that: Each of the atomizing nozzles is connected to a water supply branch pipe through the water inlet hole, the water supply branch pipe is connected to a water supply main pipe, and the water supply main pipe is connected to a water tank.

11. The generator cooling device according to claim 10, characterized in that: A flow control valve is installed on the water supply branch pipe, and a temperature sensor is installed in the shell.

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