CN204424034U - A kind of coal-winning machine transformer-cabinet adopted around water-cooled design - Google Patents

Abstract

The utility model belongs to the technical field of the cooling system of a high-power coal shearer transformer, and in particular relates to a coal shearer transformer box adopting a surrounding water cooling design. In order to solve the problems of the existing cooling box, such as waterway blockage, difficult maintenance, poor cooling effect, etc., the utility model provides a shearer transformer box with a surrounding water cooling design. The box consists of a top plate, Two side plates and a bottom plate are welded, and the two side plates are respectively embedded in connection with connection grooves on both sides of the top plate through their connecting bosses. Each plate is equipped with a cooling water circuit, which enhances the cooling capacity of the transformer box and meets the needs of high-power shearers; the cooling water channels on each plate can be used alone or in combination; the cooling water channels on each cooling plate The design of the cover plate is also conducive to the detection and dredging of the cooling water circuit.

Description

A shearer transformer box designed with surrounding water cooling

technical field

The utility model belongs to the technical field of the cooling system of a high-power coal shearer transformer, and in particular relates to a coal shearer transformer box adopting a surrounding water cooling design.

Background technique

The traction transformer required for high-power shearers (3000kW series) has reached 500kVA. If this type of traction transformer uses the original cooling method, that is, relying solely on the contact between the transformer core and the water-cooled bottom plate to dissipate heat, it can no longer meet the cooling requirements of the transformer. , prone to overheating and electrical failure. This requires increasing the cooling capacity of the box. Except for the front and rear sides of the box (where the front and rear cover plates are installed) that need to enter and exit the transformer, the remaining four sides, each of which must have a cooling water circuit. Therefore, the following problems need to be solved when designing the cabinet: 1. The process of manufacturing the cabinet; 2. The communication problem of the four-sided water jacket; 3. The problem of maintenance and timely treatment when the waterway is blocked.

If the overall casting process is adopted, the volume of the box will be large, and it will be very difficult to directly cast a hollow spiral waterway on each side, and the design of the mold is also difficult to complete.

If the casting process is used, the directly formed water pipe can be surrounded by molten iron to form the final box, but this method is difficult to achieve, the reasons are: (1) The flow of molten iron is not uniform, which affects the strength and aesthetics of the box; (2) Due to the large size of the box body and the long travel of the waterway, the steel pipes that come into contact with the molten iron earlier will be melted during the final molding of the casting, causing blockage of the waterway; (3) The cost is too high.

Contents of the invention

In order to solve the problems that the existing cooling box is prone to waterway blockage, difficult maintenance, poor cooling effect, etc., the utility model provides a coal shearer transformer box adopting a surrounding water cooling design.

The utility model adopts the following technical solutions:

A shearer transformer box adopting surround water-cooling design, which is composed of a top plate, two side plates and a bottom plate welded, and the two side plates are embedded in the connection grooves on both sides of the top plate through their connecting bosses;

The main steel plate I of the top plate is provided with an "S"-shaped cooling water channel I, the outer surface of the cooling water channel I is provided with a cover plate I, and the water inlet I and the water outlet I of the cooling water channel I are both arranged on the outer surface of the main steel plate I , screw plugs are installed at the water inlet Ⅰ and water outlet Ⅰ;

The main steel plate II of the side plate is provided with an "S"-shaped cooling water channel II, the outer surface of the cooling water channel II is provided with a cover plate II, and the water inlet II and water outlet II of the cooling water channel II are arranged on the side of the main steel plate II. Screw plugs are installed at the boss, water inlet Ⅱ and water outlet Ⅱ;

The main steel plate III of the bottom plate is also provided with an "S"-shaped cooling water channel III, the outer surface of the cooling water channel III is provided with a cover plate III, and the water inlet III and water outlet III of the cooling water channel III are respectively arranged on both sides of the main steel plate III Screw plugs are installed at the water inlet Ⅲ and water outlet Ⅲ on the boss;

The water outlet I of the top plate is connected with the water inlet II of one side plate through a joint and a rubber hose, the water outlet II of the side plate is connected with the water inlet II of the other side plate through a joint and a rubber hose, and the water inlet I of the top plate is connected with the bottom plate The water outlet III is connected through a joint and a rubber hose.

The opening directions of the water inlet I and the water outlet I of the top plate and the water inlet II and the water outlet II of the two side plates are all upward.

The main steel plate I of the top plate is also provided with several connecting holes.

The two ends of the cooling water channel I are respectively located on the two sides of the main steel plate I with connecting grooves, and the two ends are provided with screw plugs.

The cooling water channel III is also provided with screw plugs on both sides of the main steel plate III perpendicular to the direction of the water inlet III and the water outlet III.

The utility model has the following beneficial effects:

1. The box body described in the utility model is formed by assembly welding, the manufacturing process is simple, and the cost is lower;

2. There are cooling water channels on each board, which enhances the cooling capacity of the transformer box and meets the needs of high-power shearers;

3. The cooling water circuit on each plate is connected by joints and rubber hoses, which avoids the situation that water leakage into the box is easy to occur when the water inlet and outlet of each steel plate are directly connected;

4. The cooling water channels on each board can be used alone or in combination, and the water flow path can be designed according to the needs, effectively avoiding the problem that the entire cooling system will be paralyzed when a certain water channel is blocked;

5. Each cooling plate is equipped with a cover plate. When a blockage of a certain cooling plate is diagnosed, the cover plate can also be milled off for detection and dredging, and the reuse rate is high;

6. The water inlet and outlet of the side plate and the top plate are all set on the top of the box (that is, the direction of the water inlet and outlet is upward), which can facilitate the free combination of water flow paths and convenient operation.

Description of drawings

Fig. 1 is the top view of the utility model;

Fig. 2 is the front view of top plate (1);

Fig. 3 is the A-A sectional view of top plate (1);

Fig. 4 is the front view of side plate (2);

Fig. 5 is the A-A sectional view of side plate (2);

Fig. 6 is the front view of base plate (3);

Fig. 7 is the A-A sectional view of base plate (3);

In the figure: 1-top board, 2-side board, 3-bottom board;

11-cooling waterway Ⅰ, 12-connection groove, 13-water inlet Ⅰ, 14-connection hole, 15-water outlet Ⅰ, 16-main steel plate Ⅰ, 17-cover plate Ⅰ, 18-screw plug;

21-cover plate Ⅱ, 22-main steel plate Ⅱ, 23-water inlet Ⅱ, 24-water outlet Ⅱ, 25-cooling waterway Ⅱ, 26-connecting boss;

31-main steel plate Ⅲ, 32-cooling waterway Ⅲ, 33-water inlet Ⅲ, 34-water outlet Ⅲ, 35-cover plate Ⅲ, 36-boss.

Detailed ways

In conjunction with accompanying drawing, the specific embodiment of the present utility model is described further:

As shown in Figure 1, the shearer transformer box with surrounding water cooling design is composed of a top plate 1, two side plates 2 and a bottom plate 3 welded together, and the two side plates 2 are respectively connected to the top plate 1 through its connecting boss 26. The connection groove 12 on the side is embedded for connection.

As shown in Figures 2 and 3, an "S"-shaped cooling water channel I11 is provided on the main steel plate I16 of the top plate 1, and the outer surface of the cooling water channel I11 is provided with a cover plate I17, and the water inlet I13 and the water outlet I15 of the cooling water channel I11 are both provided. On the outer surface of the main steel plate I16, screw plugs 18 are installed at the water inlet I13 and the water outlet I15; the two ends of the cooling water channel I11 are respectively located on the two sides of the main steel plate I16 with connecting grooves 12, two Both ends are provided with screw plugs 18, and the screw plugs 18 at both ends can effectively prevent water from flowing out through the ends, affecting the water circulation cooling between the plates.

As shown in Figures 4 and 5, the main steel plate II22 of the side plate 2 is provided with an "S"-shaped cooling waterway II25, the outer surface of the cooling waterway II25 is provided with a cover plate II21, and the water inlet II23 and water outlet II24 of the cooling waterway II25 are provided. Screw plugs 18 are installed at the connecting boss 26 on the side of the main steel plate II22, the water inlet II23 and the water outlet II24.

As shown in Figures 6 and 7, an "S"-shaped cooling waterway III32 is also provided on the main steel plate III31 of the bottom plate 3, and the outer surface of the cooling waterway III32 is provided with a cover plate III35, and the water inlet III33 and water outlet III34 of the cooling waterway III32 are respectively Set on the bosses 36 on both sides of the main steel plate Ⅲ31, screw plugs 18 are installed at the water inlet Ⅲ33 and the water outlet Ⅲ34; Screw plug 18 is provided.

The water outlet I15 of the top plate 1 is connected to the water inlet II23 of one side plate 2 through a joint and a rubber hose, the water outlet II24 of the side plate 2 is connected to the water inlet II23 of the other side plate 2 through a joint and a rubber hose, and the water inlet of the top plate 1 I13 is connected with the water outlet III34 of the bottom plate 3 through a joint and a rubber hose. Therefore, the cooling water channels on the top plate, side plates and bottom plate form a circulation, and the paths of the cooling water channels on the top plate, side plates and bottom plate are not fixed, and each water port on each plate can be used as a water inlet or a water outlet.

Because the cooling water channels between the top plate, side plates and the bottom plate are connected by standard joints and rubber hoses, the four cooling plates can also be individually cooled according to needs, which can effectively avoid the paralysis of the entire cooling system when a certain water channel is blocked The problem.

Each cooling plate is equipped with a cover plate. When a certain cooling plate is diagnosed to be blocked, its cover plate can be milled off for detection and dredging.

The water inlet and outlet of the two side plates and the top plate are all set on the top of the box (opening direction is upward), which can facilitate the free combination of water flow paths.

In order to facilitate the installation of the transformer box, several connection holes 14 are also provided on the main steel plate I16 of the top plate 1 .

Claims (5)

1. A coal shearer transformer box with surrounding water cooling design, characterized in that: the box is composed of a top plate (1), two side plates (2) and a bottom plate (3) welded, two side plates The board (2) is respectively embedded connected with the connecting grooves (12) on both sides of the top board (1) through its connecting bosses (26); The main steel plate I (16) of the top plate (1) is provided with an "S"-shaped cooling waterway I (11), the outer surface of the cooling waterway I (11) is provided with a cover plate I (17), and the cooling waterway I (11) )’s water inlet I (13) and water outlet I (15) are both set on the outer surface of the main steel plate I (16), and the water inlet I (13) and water outlet I (15) are installed with screw plugs (18); The main steel plate II (22) of the side plate (2) is provided with an "S"-shaped cooling waterway II (25), the outer surface of the cooling waterway II (25) is provided with a cover plate II (21), and the cooling waterway II ( 25) The water inlet II (23) and the water outlet II (24) are located at the connecting boss (26) on the side of the main steel plate II (22), and the water inlet II (23) and the water outlet II (24) are installed with Screw plug (18); The main steel plate III (31) of the bottom plate (3) is also provided with an "S" type cooling waterway III (32), the outer surface of the cooling waterway III (32) is provided with a cover plate III (35), and the cooling waterway III ( 32) The water inlet III (33) and the water outlet III (34) are respectively arranged on the bosses (36) on both sides of the main steel plate III (31), and the water inlet III (33) and the water outlet III (34) are installed There is a screw plug (18); The water outlet I (15) of the top plate (1) is connected to the water inlet II (23) of a side plate (2) through joints and rubber hoses, and the water outlet II (24) of the side plate (2) is connected to the other side The water inlet II (23) of the plate (2) is connected through a joint and a rubber hose, and the water inlet I (13) of the top plate (1) is connected with the water outlet III (34) of the bottom plate (3) through a joint and a rubber hose. 2. The coal shearer transformer box with surrounding water cooling design according to claim 1, characterized in that: the water inlet I (13) and water outlet I (15) of the top plate (1) and the two side plates ( 2) The opening directions of the water inlet II (23) and the water outlet II (24) are all upward. 3. The coal shearer transformer box with surrounding water cooling design according to claim 1, characterized in that: the main steel plate I (16) of the top plate (1) is also provided with several connection holes (14). 4. The coal shearer transformer box with surrounding water cooling design according to claim 1, characterized in that: the two ends of the cooling water channel I (11) are respectively located on the main steel plate I (16) and have connection recesses. On both sides of the groove (12), screw plugs (18) are provided at both ends. 5. The coal shearer transformer box with surrounding water cooling design according to claim 1, characterized in that: the cooling waterway III (31) is perpendicular to the water inlet III (33) and the water outlet III (34) The two sides of the main steel plate III (31) are also provided with screw plugs (18).