CN114745924B

CN114745924B - Auxiliary sprayer for external air cooling of direct-current converter station

Info

Publication number: CN114745924B
Application number: CN202210424610.9A
Authority: CN
Inventors: 李涛; 黄巨; 兰泳文; 程术; 王利琴; 林益茂; 彭浩; 郭帅; 陈豪
Original assignee: Dc Co Of State Grid Hubei Electric Power Co ltd
Current assignee: Dc Co Of State Grid Hubei Electric Power Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2023-06-23
Anticipated expiration: 2042-04-21
Also published as: CN114745924A

Abstract

The invention discloses an auxiliary sprayer for air cooling outside a direct current converter station, which comprises a converter valve shell, an air cooler, a pumping device, a water cooling device, an air cooling device and a driving device, wherein the converter valve shell is internally provided with the converter valve, and the driving device is used for providing power for the pumping device and a fan blade group.

Description

Auxiliary sprayer for external air cooling of direct-current converter station

Technical Field

The invention relates to the technical field of cooling of a converter valve for a direct-current converter station, in particular to an auxiliary sprayer for air cooling outside the direct-current converter station.

Background

The converter valve is core equipment of direct current transmission engineering, and when the converter valve works, three-phase alternating voltage is sequentially connected to a direct current end so as to obtain expected direct current voltage and control power, and a great amount of heat generated in the working process of the converter valve is generated.

The cooling system of the converter valve generally comprises internal circulating cold water and external air cooling, and the patent application number is: the Chinese patent of CN201020227197.X discloses an auxiliary spraying device for external air cooling of a direct-current converter station, which overcomes the defect of insufficient cooling capacity of an external air cooling system of the direct-current converter station in extreme high-temperature weather in summer, ensures normal operation of a valve cooling system and ensures safety and reliability of the converter station.

Above-mentioned patent cools down outside forced air cooling water pipe through spraying the effect, but it has some drawbacks when using, cools down outside forced air cooling water pipe through the mode that the cooling water sprayed, and the means of cooling is more single, and the effect of cooling is not good, after the cooling, the cooling water outflow can lead to the waste of cooling water.

Disclosure of Invention

In order to solve the problems, the invention provides an auxiliary sprayer for air cooling outside a direct current converter station, which is realized by the following technical scheme.

The auxiliary sprayer comprises a converter valve housing, wherein the converter valve housing is internally provided with a converter valve, and the auxiliary sprayer also comprises an air-cooled cabinet, a pumping device, a water cooling device, an air cooling device and a driving device;

the air cooling cabinet is positioned on the right side of the converter valve shell, the bottom of the air cooling cabinet is fixedly connected with liquid storage tanks in a bilateral symmetry manner, cooling oil liquid and cooling water are respectively contained in the liquid storage tanks on the left side and the right side, a partition plate is fixedly connected in the liquid storage tanks, the liquid storage tanks are divided into a liquid storage cavity above and a pumping cavity below by the partition plate, and pumping pipes are longitudinally and uniformly fixedly connected at positions, corresponding to the pumping cavities, on side plates, away from each other, of the liquid storage tanks;

the pumping devices are arranged in the pumping cavities, and the pumping devices on the left side and the right side respectively convey cooling oil liquid and cooling water into the corresponding pumping pipes;

the water cooling device comprises a heat absorption pipe and a cooling pipe; the heat absorption pipes and the cooling pipes are fixedly connected in the converter valve shell and the air cooling cabinet respectively, the heat absorption pipes and the cooling pipes are correspondingly arranged with pumping pipes on the left side, the tops of the corresponding heat absorption pipes and the cooling pipes are in butt joint through communicating pipes, the bottoms of the heat absorption pipes are connected with the heads of the pumping pipes on the left side, and the heads of the cooling pipes are connected with the top plate of the liquid storage tank on the left side through return pipes;

the air cooling device comprises a water distribution frame and an air drum; the water distribution frame is fixedly connected in the air cooling cabinet, the head of each pumping pipe on the right side is connected with the top of the water distribution frame, the air duct is fixedly connected in the right side plate of the air cooling cabinet, a rotating shaft is rotationally connected to the position of the water distribution frame corresponding to the air duct, a fan blade group is fixedly connected to one end of the shaft rod extending into the air duct, and the liquid storage tank on the right side is communicated with the air cooling cabinet through a backflow hole;

the driving device is used for providing power for the pumping device and is also used for driving the rotating shaft to rotate.

Further, the pumping device comprises a reciprocating screw rod and a piston; the reciprocating screw rod is rotationally connected with the inside of the pumping cavity through a connecting shaft which is bilaterally symmetrical, a first driven bevel gear is fixedly connected with the head part of the connecting shaft which is close to the center of the air cooling cabinet, the driving device is used for driving the first driven bevel gear to rotate, a guide rod is fixedly connected in the pumping cavity, the piston is in sealing sliding connection with the pumping cavity, the piston is meshed with the reciprocating screw rod and is in sliding connection with the guide rod, a liquid suction pipe is longitudinally and uniformly fixedly connected at the position, close to the pumping pipe, on the partition plate, a communicating hole is longitudinally and uniformly arranged at the position, far away from the pumping pipe, of the partition plate, a liquid spraying pipe is fixedly connected at the position, corresponding to the pumping pipe, of the liquid storage tank, the liquid spraying pipe is in butt joint with the pumping pipe, a first one-way valve and a second one-way valve are respectively arranged in the liquid suction pipe and the liquid spraying pipe, the direction of allowing fluid to pass is the direction pointing to the pumping cavity, and the direction of the second one-way valve allowing fluid to pass is the direction deviating from the pumping cavity.

Further, the inside rigid coupling of water distribution frame has the connecting rod of crisscross rigid coupling, and the connecting rod separates the inside of water distribution frame into a plurality of spraying spaces, and the rigid coupling has the grid net in each spraying space, and the intersection position rigid coupling of connecting rod has the swivel mount, the pivot rotates to be connected in the swivel mount, the one end rigid coupling that the fan blade group was kept away from to the pivot has the second driven bevel gear, drive arrangement is used for driving the rotation of second driven bevel gear, has seted up the transfer chamber in the roof of water distribution frame, the downpipe hole has been seted up to the bottom of transfer chamber, and the head and the transfer chamber intercommunication of each pumping pipe in right side.

Further, three groups of the air cylinders and the rotating shafts are longitudinally and uniformly arranged, and the driving device comprises a shaft lever and a motor; the shaft rod is rotationally connected between a top plate and a bottom plate of the air cooling cabinet, the shaft rod is correspondingly arranged with each group of rotating shafts, a second driving bevel gear meshed with a second driven bevel gear is fixedly connected on the shaft rod, two first driving wheels are fixedly connected on the shaft rod in the middle, second driving wheels are fixedly connected on the shaft rods on the front side and the rear side, the corresponding first driving wheels and the second driving wheels are linked through belts, a first driving bevel gear is fixedly connected at the bottom of the shaft rod in the middle, the two first driven bevel gears are meshed with the first driving bevel gears on the two sides of the first driving bevel gears, an organic cover is fixedly connected at the top of the air cooling cabinet, a motor is fixedly connected in the organic cover, and the motor is used for driving the middle shaft rod to rotate.

Further, the first driving wheel and the second driving wheel are toothed wheels, and the belt is a toothed belt matched with the toothed wheels.

Further, the heat absorption pipe, the cooling pipe and the pumping pipe are all made of red copper.

Further, a liquid adding pipe is arranged on the upper portion of the front side plate of the liquid storage tank, and a cover body is connected with the head of the liquid adding pipe in a threaded mode.

Further, the liquid storage tank is made of transparent materials.

The invention has the beneficial effects that the driving device provides power for the pumping device and the fan blade group, the pumping device on the left side drives the cooling oil to flow in the water cooling device when working, the cooling oil absorbs heat in the converter valve shell at the position of the heat absorption pipe, the pumping device on the right side extracts cooling water to the position of the water distribution frame when working, cold air is blown to the water distribution frame through the rotation of the fan blade group, the cold air and water on the water distribution frame are mixed into an atomized state and act on the cooling pipe, so that the cooling oil can be well cooled at the position of the cooling pipe, and the cooling oil entering the heat absorption pipe has lower temperature, thereby having good heat absorption effect.

Drawings

In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description of the specific embodiments will be briefly described below, it being obvious that the drawings in the following description are only some examples of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1: the invention discloses an axonometric diagram for removing a converter valve shell of an auxiliary sprayer for air cooling outside a direct-current converter station;

fig. 2: the invention discloses a cross-sectional view of an auxiliary sprayer for air cooling outside a direct current converter station;

fig. 3: an enlarged view of a portion of the portion a shown in fig. 2;

fig. 4: the invention discloses a perspective schematic diagram of one angle of an internal structure of an air cooling cabinet;

fig. 5: the invention discloses a three-dimensional schematic diagram of another angle of the internal structure of an air cooling cabinet;

fig. 6: the structure of the water distribution frame is schematically shown;

fig. 7: the structure of the pumping device is schematically shown;

fig. 8: the structure of the partition board is schematically shown.

The reference numerals are as follows:

the device comprises a 1-converter valve shell, a 2-wind-cooling cabinet, a 21-liquid storage tank, a 22-baffle plate, a 23-liquid storage cavity, a 24-pumping cavity, a 25-pumping pipe, a 26-liquid adding pipe, a 31-reciprocating screw rod, a 32-piston, a 33-rotating shaft, a 34-first driven bevel gear, a 35-guide rod, a 36-liquid pumping pipe, a 37-communication hole, a 38-liquid spraying pipe, a 39-first one-way valve, a 310-second one-way valve, a 41-heat absorbing pipe, a 42-cooling pipe, a 43-communication pipe, a 44-return pipe, a 51-water distribution frame, a 511-connecting rod, a 512-grid mesh, a 513-rotating seat, a 514-second driven bevel gear, a 515-transit cavity, a 516-hole, a 52-wind cylinder, a 53-rotating shaft, a 54-fan blade group, a 55-return hole, a 61-shaft lever, a 62-motor, a 63-second driving bevel gear, a 64-first driving wheel, a 65-second driving bevel gear, a 65-second driving wheel, a 66-belt, a 67-first driving bevel gear and a 68-hood.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1-7, the present invention has the following four specific embodiments.

Example 1

The auxiliary sprayer for air cooling outside the direct-current converter station comprises a converter valve housing 1, a refrigerator 2, a pumping device, a water cooling device, an air cooling device and a driving device, wherein a converter valve is arranged in the converter valve housing 1;

the air cooler 2 is positioned on the right side of the converter valve shell 1, the bottom of the air cooler 2 is symmetrically and fixedly connected with a liquid storage tank 21, cooling oil liquid and cooling water are respectively contained in the liquid storage tanks 21 on the left side and the right side, a baffle plate 22 is fixedly connected in the liquid storage tank 21, the liquid storage tank 21 is divided into a liquid storage cavity 23 above and a pumping cavity 24 below by the baffle plate 22, and pumping pipes 25 are longitudinally and uniformly fixedly connected on the side plates, away from each other, of the liquid storage tank 21 corresponding to the pumping cavities 24;

the pumping devices are arranged in the pumping cavity 24, and the pumping devices on the left side and the right side respectively convey cooling oil liquid and cooling water into the corresponding pumping pipes 25;

the water cooling device comprises a heat absorption pipe 41 and a cooling pipe 42; the heat absorption pipes 41 and the cooling pipes 42 are fixedly connected in the converter valve shell 1 and the air cooling cabinet 2 respectively, the heat absorption pipes 41 and the cooling pipes 42 are correspondingly arranged with the pumping pipes 25 on the left side, the tops of the corresponding heat absorption pipes 41 and the cooling pipes 42 are in butt joint through the communicating pipes 43, the bottoms of the heat absorption pipes 41 are connected with the heads of the pumping pipes 25 on the left side, and the heads of the cooling pipes 42 are connected with the top plate of the liquid storage tank 21 on the left side through the return pipes 44;

the air cooling device comprises a water distribution frame 51 and an air duct 52; the water distribution frame 51 is fixedly connected in the air cooling cabinet 2, the head parts of the pumping pipes 25 on the right side are connected with the top parts of the water distribution frame 51, the air cylinders 52 are fixedly connected in the right side plate of the air cooling cabinet 2, the positions, corresponding to the air cylinders 52, on the water distribution frame 51 are rotationally connected with rotating shafts 53, one ends, extending into the air cylinders 52, of the shaft rods are fixedly connected with fan blade groups 54, and the liquid storage tanks 21 on the right side are communicated with the air cooling cabinet 2 through reflow holes 55;

the driving device is used for providing power for the pumping device, and the driving device is also used for driving the rotating shaft 53 to rotate.

Preferably, the heat absorbing pipe 41, the cooling pipe 42 and the pumping pipe 25 are all made of red copper.

Preferably, the upper part of the front side plate of the liquid storage tank 21 is provided with a liquid adding pipe, and the head part of the liquid adding pipe is connected with a cover body in a threaded manner.

Preferably, the liquid storage tank 21 is made of transparent material.

In this embodiment:

cooling oil and cooling water are respectively added into the liquid storage tanks 21 on the left and right sides through liquid adding pipes.

The driving device drives the pumping devices on the left side and the right side to work when working, the pumping devices on the left side convey cooling oil to the pumping pipe 25 on the left side, the cooling oil sequentially enters the heat absorption pipe 41, the communicating pipe 43 and the cooling pipe 42 and flows back to the liquid storage tank 21 on the left side through the return pipe 44, and the cooling oil in the heat absorption pipe 41 is used for absorbing heat in the converter valve shell 1, and the cooling oil after absorbing the heat is cooled at the position of the cooling pipe 42.

When the pumping device on the right side works, cooling liquid is pumped to the water distribution frame 51, and cooling water after the cooling function is performed flows back to the liquid storage tank 21 on the right side through the backflow hole 55.

The driving device also synchronously drives the fan blade group 54 to rotate, and sets the inclination direction of the fan blades, so that when the fan blade group rotates, air in the air duct 52 flows from right to left, namely, cold air can be blown onto the water distribution frame 51 when the fan blade group 54 rotates, the cold air and water on the water distribution frame 51 are mixed into an atomized state, and atomized cooling water is sprayed on the cooling pipe 42, so that heat in cooling oil is taken away.

Example 2

On the basis of the embodiment 1, the specific technical characteristics of the pumping device are disclosed in the embodiment.

The pumping device comprises a reciprocating screw 31 and a piston 32; the reciprocating screw rod 31 is rotationally connected with the pumping cavity 24 through a connecting shaft 33 which is bilaterally symmetrical, a first driven bevel gear 34 is fixedly connected with the head of the connecting shaft 33 which is close to the center of the refrigerator 2, a driving device is used for driving the first driven bevel gear 34 to rotate, a guide rod 35 is fixedly connected with the pumping cavity 24, a piston 32 is in sealing sliding connection with the pumping cavity 24, the piston 32 is meshed with the reciprocating screw rod 31 and is in sliding connection with the guide rod 35, a liquid suction pipe 36 is longitudinally and uniformly fixedly connected with a position, close to the pumping pipe 25, on the baffle 22, a communication hole 37 is longitudinally and uniformly arranged at a position, far away from the pumping pipe 25, on the baffle 22, a liquid spraying pipe 38 is fixedly connected with the position, corresponding to the pumping pipe 25, of the liquid storage tank 21, the liquid spraying pipe 38 is in butt joint with the pumping pipe 25, a first one-way valve 39 and a second one-way valve 310 are respectively arranged in the liquid suction pipe 36 and the liquid spraying pipe 38, the direction of allowing the fluid to pass is in the direction pointing to the pumping cavity 24, and the direction of allowing the fluid to pass is the direction of deviating from the pumping cavity 24.

In this embodiment:

the first driven bevel gear 34 is driven to rotate by the driving device, and as the piston 32 is meshed with the reciprocating screw rod 31 and guided by the guide rod 35, when the reciprocating screw rod 31 rotates, the piston 32 reciprocates left and right in the pumping cavity 24, and the cooling oil liquid or cooling water can be conveyed into the corresponding pumping pipe 25 by matching the first one-way valve 39 and the second one-way valve 310.

Example 3

On the basis of the embodiment 2, the embodiment discloses specific technical characteristics of the water distribution frame 51,

the inside rigid coupling of water distribution frame 51 has vertically and horizontally staggered rigid coupling to have connecting rod 511, connecting rod 511 separates the inside of water distribution frame 51 into a plurality of shower spaces, rigid coupling has grid net 512 in each shower space, the intersection position rigid coupling of connecting rod 511 has swivel mount 513, pivot 53 swivelling joint is in swivel mount 513, the one end rigid coupling that pivot 53 kept away from flabellum group 54 has second driven bevel gear 514, drive arrangement is used for driving second driven bevel gear 514 rotation, transfer chamber 515 has been seted up in the roof of water distribution frame 51, downpipe 516 has been seted up to the bottom of transfer chamber 515, the head and the transfer chamber 515 intercommunication of each pumping pipe 25 in the right side.

In this embodiment:

the pumping pipe 25 on the right side conveys the cooling water to the transfer cavity 515, and the cooling water in the transfer cavity 515 falls down tightly to the water falling hole 516, so that a water curtain is formed on the grid mesh 512, and when the fan blade group 54 rotates, the cooling air is blown on the water curtain to form water mist.

Example 4

On the basis of embodiment 3, this embodiment discloses specific technical features of the driving device.

Three groups of air cylinders 52 and rotating shafts 53 are longitudinally and uniformly arranged, and the driving device comprises a shaft lever and a motor; the axostylus axostyle rotates to be connected between roof and the bottom plate of forced air cooling cabinet 2, the axostylus axostyle corresponds the setting with each group pivot 53, the rigid coupling has the second initiative bevel gear with second driven bevel gear 514 meshing on the axostylus axostyle, rigid coupling has two first drive wheels on the axostylus axostyle in the centre, rigid coupling has the second drive wheel on the axostylus axostyle of both sides around, corresponding first drive wheel and second drive wheel pass through the belt linkage, the axostylus axostyle bottom in the centre still rigid coupling has first initiative bevel gear, two first driven bevel gears 34 mesh with it in the both sides of first initiative bevel gear, the top rigid coupling organic cover of forced air cooling cabinet 2, the motor rigid coupling is in the aircraft bonnet, the motor is used for driving the axostylus axostyle in the centre and rotates.

Preferably, the first driving wheel and the second driving wheel are toothed wheels, and the belt is a toothed belt matched with the toothed wheels.

In this embodiment:

the motor is operated to rotate the intermediate shaft and thus the first drive bevel gear and the meshed first driven bevel gear 34.

When the middle shaft lever rotates, the first driving wheel fixedly connected with the middle shaft lever rotates, under the action of the belt, the shaft levers at the front side and the rear side rotate, namely, each shaft lever synchronously rotates, the second driving bevel gear fixedly connected with the middle shaft lever rotates, and then each second driven bevel gear 514 rotates, so that the rotating shaft 53 and the fan blade group 54 rotate.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides an auxiliary sprinkler for external forced air cooling of direct current converter station, includes the converter valve casing, is used for installing the converter valve in the converter valve casing, its characterized in that: the device also comprises a refrigerator, a pumping device, a water cooling device, an air cooling device and a driving device;

the driving device is used for providing power for the pumping device and is also used for driving the rotating shaft to rotate;

the pumping device on the left side drives cooling oil to flow in the water cooling device when working, the cooling oil absorbs heat in the converter valve shell at the position of the heat absorbing pipe, and the pumping device on the right side extracts cooling water to the position of the water distribution frame when working; the driving device also synchronously drives the fan blade group to rotate, and the inclined direction of the fan blade is set, so that when the fan blade group rotates, air in the air duct flows from right to left, namely, cold air can be blown onto the water distribution frame when the fan blade group rotates, the cold air and water on the water distribution frame are mixed into an atomized state, and atomized cooling water is sprayed on the cooling pipe, so that heat in cooling oil liquid is taken away.

2. An auxiliary spray for off-site air cooling of a direct current converter according to claim 1, wherein: the pumping device comprises a reciprocating screw rod and a piston; the reciprocating screw rod is rotationally connected with the inside of the pumping cavity through a connecting shaft which is bilaterally symmetrical, a first driven bevel gear is fixedly connected with the head part of the connecting shaft which is close to the center of the air cooling cabinet, the driving device is used for driving the first driven bevel gear to rotate, a guide rod is fixedly connected in the pumping cavity, the piston is in sealing sliding connection with the pumping cavity, the piston is meshed with the reciprocating screw rod and is in sliding connection with the guide rod, a liquid suction pipe is longitudinally and uniformly fixedly connected at the position, close to the pumping pipe, on the partition plate, a communicating hole is longitudinally and uniformly arranged at the position, far away from the pumping pipe, of the partition plate, a liquid spraying pipe is fixedly connected at the position, corresponding to the pumping pipe, of the liquid storage tank, the liquid spraying pipe is in butt joint with the pumping pipe, a first one-way valve and a second one-way valve are respectively arranged in the liquid suction pipe and the liquid spraying pipe, the direction of allowing fluid to pass is the direction pointing to the pumping cavity, and the direction of the second one-way valve allowing fluid to pass is the direction deviating from the pumping cavity.

3. An auxiliary spray for off-site air cooling of a direct current converter according to claim 2, wherein: the inside rigid coupling of water distribution frame has vertically and horizontally staggered rigid coupling to have the connecting rod, and the connecting rod separates the inside of water distribution frame into a plurality of shower spaces, and the rigid coupling has the grid net in each shower space, and the intersection position rigid coupling of connecting rod has the swivel mount, the pivot rotates to be connected in the swivel mount, the one end rigid coupling that the fan blade group was kept away from to the pivot has the second driven bevel gear, drive arrangement is used for driving the rotation of second driven bevel gear, has seted up the transfer chamber in the roof of water distribution frame, the downpipe hole has been seted up to the bottom in transfer chamber, and the head and the transfer chamber intercommunication of each pumping pipe in right side.

4. An auxiliary spray for off-site air cooling of a direct current converter according to claim 3, wherein: three groups of the air cylinders and the rotating shafts are longitudinally and uniformly arranged, and the driving device comprises a shaft lever and a motor; the shaft rod is rotationally connected between a top plate and a bottom plate of the air cooling cabinet, the shaft rod is correspondingly arranged with each group of rotating shafts, a second driving bevel gear meshed with a second driven bevel gear is fixedly connected on the shaft rod, two first driving wheels are fixedly connected on the shaft rod in the middle, second driving wheels are fixedly connected on the shaft rods on the front side and the rear side, the corresponding first driving wheels and the second driving wheels are linked through belts, a first driving bevel gear is fixedly connected at the bottom of the shaft rod in the middle, the two first driven bevel gears are meshed with the first driving bevel gears on the two sides of the first driving bevel gears, an organic cover is fixedly connected at the top of the air cooling cabinet, a motor is fixedly connected in the organic cover, and the motor is used for driving the middle shaft rod to rotate.

5. An auxiliary spray for off-site air cooling of a direct current converter according to claim 4, wherein: the first driving wheel and the second driving wheel are toothed wheels, and the belt is a toothed belt matched with the toothed wheels.

6. An auxiliary spray for off-site air cooling of a direct current converter according to claim 1, wherein: the heat absorption pipe, the cooling pipe and the pumping pipe are all made of red copper.

7. An auxiliary spray for off-site air cooling of a direct current converter according to claim 1, wherein: the upper part of the front side plate of the liquid storage tank is provided with a liquid adding pipe, and the head of the liquid adding pipe is connected with a cover body in a threaded manner.

8. An auxiliary spray for off-site air cooling of a direct current converter according to claim 1, wherein: the liquid storage tank is made of transparent materials.