CN213969634U

CN213969634U - Cooling device of high-performance medium-frequency welding power supply

Info

Publication number: CN213969634U
Application number: CN202022831128.6U
Authority: CN
Inventors: 芦洪波; 代新中; 陈俊; 夏思明; 徐剑
Original assignee: WUHAN KAIQI SPECIAL WELDING EQUIPMENT CO Ltd
Current assignee: WUHAN KAIQI SPECIAL WELDING EQUIPMENT CO Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-08-17
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a cooling device of high performance intermediate frequency welding power, the outlet pipe connection water cooling distribution piece (3) of cooling device's first cold water machine holds of intaking, and the return water pipe of transformer and rectifier is connected to the return water end of water cooling distribution piece (3), and each group install water flow sensor (5) and flowmeter (7) on the return water pipe, and water flow sensor (5) and flowmeter (7) are installed in water cooling distribution piece (6) both sides, and the return water end of water cooling distribution piece (6) is connected the end of intaking of third water cooling distribution piece (8), and the return water end of water cooling distribution piece (8) is connected the wet return of first cold water machine. And a second water cooler of the cooling device provides cooling water for the controller and the welding wheel. After the flow meter, the flow sensor and the water cooling distribution block are added to each cooling loop, the flow of cooling water distributed to each branch can be accurately adjusted according to requirements, and whether the flow of water of each cooling pipeline is in a normal state or not can be monitored at any time.

Description

Cooling device of high-performance medium-frequency welding power supply

Technical Field

The application relates to a cooling device of an intermediate frequency welding power supply.

Background

The welding power supply of the welding machine on the strip steel production line adopts a medium-frequency welding power supply, and has the advantages of high control precision, stable output current, small inductive reactance influence, light weight of a welding transformer, less splashing in the welding process, energy conservation, small impact on a power grid and the like. In order to meet the requirement of the intermediate frequency welding power supply on temperature control, a suitable cooling device is needed.

SUMMERY OF THE UTILITY MODEL

The application provides a cooling device of an intermediate frequency welding power supply, which can be used for cooling the intermediate frequency welding power supply of a strip steel on-line resistance seam welding machine. The cooling device can make the performance of the welding power supply of resistance welding more stable, meet the requirements of the medium-frequency welding power supply on cooling water temperature and flow control, help the welding machine to output current stably for a long time in the welding process, ensure the welding quality of a welding seam, and make the welding seam completely meet the use requirements of a plate and strip unit production line.

In one aspect of the embodiment of the application, a cooling device of an intermediate frequency welding power supply is provided, which comprises a cooling water tank, a first water cooling distribution block, a second water cooling distribution block and a third water cooling distribution block, wherein the cooling water tank is provided with a first water chiller for providing cooling water for a transformer and a rectifier and a second water chiller for providing cooling water for a controller and a welding wheel, a water outlet pipe of the first water chiller is connected with a water inlet end of the first water cooling distribution block, a water return end of the first water cooling distribution block is connected with a water inlet pipeline of the transformer and the rectifier, the second water cooling distribution block is installed on a water return pipeline of the transformer and the rectifier, a water flow sensor and a flow meter are installed on each set of water return pipelines of the transformer and the rectifier, wherein the water flow sensor is installed at the water inlet end of the second water cooling distribution block, the flowmeter is installed at the water return end of the second water cooling distribution block, the transformer and the tail end of the water return pipeline of the rectifier are connected with the water inlet end of the third water cooling distribution block, and the water return end of the third water cooling distribution block is connected with the water return pipe of the first water cooler.

In some examples, a switch stop valve is arranged between the first water cooling distribution block and a water outlet pipe of the first water chiller and between the third water cooling distribution block and a water return pipe of the first water chiller.

In some examples, the water flow sensor, the second water cooling distribution block, and the flow meter are secured to a water cooling control box.

In some examples, the water-cooled control box is fixed on the side of the transformer.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly described below.

Fig. 1 shows a schematic diagram of a cooling arrangement of a medium frequency welding power supply according to an embodiment of the application.

Fig. 2 shows a layout of a cooling device of a medium frequency welding power supply according to an embodiment of the application.

Fig. 3 shows a schematic diagram of a rectifier inlet and a transformer inlet according to an embodiment of the present application.

Description of reference numerals:

1-cooling water tank (dual system);

2-a stop valve;

3-a first water-cooled distribution block;

4-water cooling control box;

5-a water flow sensor;

6-a second water-cooled distribution block;

7. 10-a flow meter;

8-a third water-cooled distribution block;

9-straight-through stop valve;

11-a welding machine;

12-a transformer;

13-a rectifier return water end;

14-transformer return end;

15-a conductive bus;

16-the water inlet end of the rectifier;

17-the transformer water inlet end;

18-switch stop valve.

Detailed Description

As shown in fig. 1-3, a cooling device for an intermediate frequency welding power supply includes a cooling water tank 1, a stop valve 2, a first water cooling distribution block 3, a water cooling control box 4, a water flow sensor 5, a second water cooling distribution block 6, a flow meter 7, and a third water cooling distribution block 8.

The cooling water tank 1 is of a dual system, and has a first water chiller for supplying cooling water to a rectifier composed of a transformer 12 and diodes, and a second water chiller for supplying cooling water to a controller and a welding wheel. And the water outlet pipes and the water return pipes of the first water chiller and the second water chiller are provided with switch stop valves 18.

The water cooling distribution blocks 3, 6 and 8 are made of antirust and anticorrosive alloy materials, and a plurality of pore passages are formed in the water cooling distribution blocks and connected with pipelines of an external cooling unit to reasonably distribute cooling water to all pipelines of the cooling unit. And a straight-through stop valve 9 and a flowmeter 10 are arranged on a pipeline connecting the second water chiller and the controller.

The water outlet pipe of the first water cooler is connected with the water inlet end of the first water cooling distribution block 3, and the water return end of the first water cooling distribution block 3 is connected with the transformer 12 of the intermediate frequency welding power supply and the water inlet pipeline of the rectifier. The second water cooling distribution block 6 is installed on the water return pipelines of the transformer 12 and the rectifier, and each group of water return pipelines of the transformer 12 and the rectifier is provided with a water flow sensor 5 and a flow meter 7, wherein the water flow sensor 5 is installed at the water inlet end of the second water cooling distribution block 6, and the flow meter 7 is installed at the water return end of the second water cooling distribution block 6. The tail ends of the transformer 12 and the water return pipeline of the rectifier are connected with the water inlet end of a third water cooling distribution block 8, and the water return end of the third water cooling distribution block 8 is connected with the water return pipe of the first water chiller. In addition, a switch stop valve 2 is arranged between the first water cooling distribution block 3 and a water outlet pipe of the first water cooling machine, and between the third water cooling distribution block 8 and a water return pipe of the first water cooling machine, so that the maintenance is facilitated. For convenient integrated control, the water flow sensor 5, the second water cooling distribution block 6 and the flowmeter 7 are packaged in the water cooling control box 4. As shown in fig. 2, the water-cooled control box 4 is fixed on the side of the transformer 12 to reduce the problem caused by the overlong water pipe.

As shown in FIG. 2, the water-cooled control box 4, the transformer 12, the rectifier and the conductive bus bar 15 are installed on the vertical column of the welding machine.

When the welder works, circulating cooling water of the first water chiller flows into the rectifier water inlet end 16 and the transformer water inlet end 17 through the first water cooling distribution block 3, and cooling water flowing out of the rectifier water return end 13 and the transformer water return end 14 sequentially flows through the water flow sensor 5, the second water cooling distribution block 6, the flowmeter 7 and the third water cooling distribution block 8 and then flows back to the first water chiller.

According to the flow detection device, not only are water flow display and flow adjustment elements configured on each cooling branch pipeline, but also the flow detection sensors are mounted on each cooling pipeline, so that the change of the flow of each cooling pipeline can be observed conveniently at any time. The water inlet and return of all cooling pipelines are uniformly connected to the water cooling distribution block, and the water inlet and return are intensively installed, so that the reasonable distribution of the flow of each pipeline is facilitated. The detection flow sensor and the flowmeter of each cooling pipeline are integrated and installed in the water-cooling control box, the water-cooling control box is fixed on the side of the transformer, the problem caused by overlong water pipes is reduced, the device is not only controlled to be centralized, but also is convenient to overhaul and maintain.

This application has increased behind flowmeter, flow sensor and the water cooling distribution piece at each cooling circuit, makes the cooling water flow who distributes each branch road can be as required accurate adjustment, does also monitor whether the water flow of each cooling tube is in normal condition at any time, makes the stability and the life cycle of intermediate frequency welding power supply very improve, has reduced user use cost, has improved production efficiency.

Claims

1. A cooling device of an intermediate frequency welding power supply is characterized by comprising a cooling water tank (1), a first water cooling distribution block (3), a second water cooling distribution block (6) and a third water cooling distribution block (8), wherein the cooling water tank (1) is provided with a first water cooler for providing cooling water for a transformer (12) and a rectifier and a second water cooler for providing cooling water for a controller and a welding wheel, a water outlet pipe of the first water cooler is connected with a water inlet end of the first water cooling distribution block (3), a water return end of the first water cooling distribution block (3) is connected with a water inlet pipeline of the transformer (12) and a water inlet pipeline of the rectifier, the second water cooling distribution block (6) is arranged on the water return pipelines of the transformer (12) and the rectifier, and each group of water return pipelines of the transformer (12) and the rectifier is provided with a water flow sensor (5) and a flow meter (7), wherein the water flow sensor (5) is arranged at the water inlet end of the second water cooling distribution block (6, the flowmeter (7) is installed at the water return end of the second water cooling distribution block (6), the transformer (12) and the rectifier are connected with the water inlet end of the third water cooling distribution block (8) at the tail end of the water return pipeline, and the water return end of the third water cooling distribution block (8) is connected with the water return pipe of the first water chiller.

2. The cooling device of the intermediate frequency welding power supply according to the claim 1, characterized in that a switch stop valve (2) is arranged between the first water cooling distribution block (3) and the water outlet pipe of the first water chiller, and between the third water cooling distribution block (8) and the water return pipe of the first water chiller.

3. The cooling device of the intermediate frequency welding power supply according to the claim 1, characterized in that the water flow sensor (5), the second water cooling distribution block (6) and the flow meter (7) are fixed on the water cooling control box (4).

4. Cooling device for medium frequency welding power supply according to claim 3 characterized in that the water cooled control box (4) is fixed on the side of the transformer (12).