阅读说明：本技术 一种触头盒及使用该触头盒的开关柜 (kinds of contact box and switch cabinet using same ) 是由 朱彦卿 卢健 潘明 马明乐 王海燕 袁端磊 于 2018-07-20 设计创作，主要内容包括：本发明涉及电力设备配套的附件,尤其涉及一种触头盒及使用该触头盒的开关柜。该触头盒包括盒体和贯穿整个盒体的通风道,所述盒体使用时,在动触头与静触头的配合处的正上方位置处设有散热孔,所述散热孔在使用时其靠近柜板的边缘处设有挡壁,盒体上与所述散热孔对应位置处设有分隔件,分隔件将散热孔分隔成2个以上的散热通道；开关柜包括柜体和上述触头盒,触头盒内固定连接有静触头,动触头在触头盒内与静触头配合连接。采用这种结构的触头盒散热效率高,同时也避免了在动、静触头配合处上方开孔时电场对触头盒电气性能的影响,将这种触头盒装入开关柜内,还能很好地满足防护等级的要求,非常实用。(The invention relates to accessories matched with power equipment, in particular to contact boxes and a switch cabinet using the contact boxes, wherein each contact box comprises a box body and an air duct penetrating through the whole box body, when the box body is used, a radiating hole is arranged at a position right above a matching position of a moving contact and a static contact, a blocking wall is arranged at the edge of the radiating hole close to a cabinet plate when the radiating hole is used, a separating member is arranged at a position on the box body corresponding to the radiating hole and divides the radiating hole into more than 2 radiating channels, the switch cabinet comprises a cabinet body and the contact box, the static contact is fixedly connected in the contact box, and the moving contact is matched and connected with the static contact in the contact box.)

The contact box comprises a box body and an air duct penetrating through the whole box body, and is characterized in that when the box body is used, heat dissipation holes are formed in positions right above the matching position of a moving contact and a static contact, blocking walls are arranged at the edges, close to a cabinet plate, of the heat dissipation holes when the heat dissipation holes are used, separators are arranged on the positions, corresponding to the heat dissipation holes, of the box body, and the separators divide the heat dissipation holes into more than 2 heat dissipation channels.

2. The contact box of claim 1, wherein: the spacing between the heat dissipation channels meets the requirements of protection level IP 2X.

3. The contact box of claim 1, wherein: the separator protrudes out of the box body and is arranged from low to high along the direction from the static contact to the moving contact.

4. The contact box of claim 1, wherein: and a side baffle is arranged at the vertical direction of the matching and connecting direction of the moving contact and the static contact of the box body.

5. The contact box of claim 4, wherein: the side baffle is arranged in a wedge shape gradually rising along the direction from the static contact to the movable contact.

6, kind of cubical switchboard, including the cabinet body and install the contact box in the cabinet body, the contact box includes the box body, fixedly connected with static contact in the box body, the moving contact is in the box body with the static contact cooperation be connected, characterized in that, when the box body uses, be equipped with the louvre in the position directly over the cooperation department of moving contact and static contact, the louvre is equipped with the wall near the edge of cabinet board when using at the louvre, be equipped with the separator on the box body with the louvre correspondence position, the separator separates the louvre into more than 2 heat dissipation channels.

7. The switchgear cabinet according to claim 6, characterized in that: the spacing between the heat dissipation channels meets the requirements of protection level IP 2X.

8. The switchgear cabinet according to claim 6, characterized in that: the separator protrudes out of the box body and is arranged from low to high along the direction from the static contact to the moving contact.

9. The switchgear cabinet according to claim 6, characterized in that: and a side baffle is arranged at the vertical direction of the matching and connecting direction of the moving contact and the static contact of the box body.

10. The switchgear cabinet according to claim 9, characterized in that: the side baffle is arranged in a wedge shape gradually rising along the direction from the static contact to the movable contact.

Technical Field

The invention relates to accessories matched with types of power equipment, in particular to a types of contact boxes and a switch cabinet using the same.

Background

The bearing current in the switch cabinet can reach 3150 and 4000A, as the bearing current in the switch cabinet is larger, a large amount of hot air can be generated at the lap joint of a moving contact and a static contact of a contact box used in the switch cabinet, and the heat generated by the contact can not be quickly radiated from the contact box, so that the heat accumulated in the contact box is larger and larger, the temperature elevation phenomenon easily exists at the contact part of the moving contact and the static contact, the oxidation of the contact is also easily caused by long-time heating, the contact resistance is increased by steps, the insulation structure is damaged, the short circuit is caused, the service life and the safety performance of equipment are reduced, and the use of the switch cabinet is influenced on the fixed distance degree.

In order to solve the above problems, chinese patent application No. CN203026804U discloses heavy current contact boxes, which are provided with ventilation and heat dissipation holes at the tail of the box body, and although the position of the opening is increased with convection heat dissipation to reduce the temperature rise at the lap joint of the moving and static contacts, the size of the opening is limited by the protection level requirement, and the opening is far away from the contact part of the moving and static contacts, which is not beneficial to the rapid heat dissipation at the lap joint of the moving and static contacts.

Disclosure of Invention

The invention aims to provide contact boxes with heat dissipation holes above the matching part of a moving contact and a static contact to improve the heat dissipation efficiency of the contact boxes and also aims to provide switch cabinets using the contact boxes.

kinds of contact box, including the box body and run through the whole air channel of the box body, when the box body uses, there are heat dissipation holes in the position right above the cooperation of moving contact and static contact, the edge that the heat dissipation hole is close to the cabinet board when using has a wall, there are separators in the position on the box body corresponding to said heat dissipation hole, the separator separates the heat dissipation hole into more than 2 heat dissipation channels.

The invention has the beneficial effects that: according to the contact box, the radiating holes are formed right above the matching part of the moving contact and the static contact, the edge, close to the cabinet plate, of the radiating holes is provided with the baffle wall when the contact box is used, the baffle wall separates an electric field from the cabinet plate, the insulating property of the contact box is effectively guaranteed, and electric components of adjacent compartments are prevented from being influenced by the electric field; the heat dissipation channel is arranged above the matching part of the moving contact and the static contact, so that a large amount of heat generated at the matching part of the moving contact and the static contact can be quickly and effectively dissipated out of the contact box, and the heat dissipation capacity of the contact box is improved.

, the space between the heat dissipation channels is limited to meet the requirement of protection grade IP2X, so that sundries with the diameter larger than 12.5mm can be prevented from entering the contact box to influence the insulation performance of the contact box.

, the separator is limited to protrude out of the box body and is arranged from low to high along the direction from the static contact to the movable contact, by adopting the structure, the creepage distance is increased in aspect, the insulating property of the contact box is ensured, and in addition, the influence of arcing on electrical devices is also avoided in aspect.

, a side baffle is arranged at the vertical direction of the box body along the matching connection direction of the moving contact and the fixed contact, and the side baffle can effectively prevent the interference of an interphase electric field.

, the side baffle is limited to be arranged in a wedge shape gradually rising along the direction from the fixed contact to the movable contact, the side baffle is low at the end close to the fixed contact and high at the end close to the movable contact, the arrangement structure reduces the gas passing path, the heat dissipation effect is fast, and the wedge-shaped arrangement is convenient for the manufacturing in the process.

kinds of cubical switchboard, including the cabinet body and install the contact box in the cabinet body, the contact box includes the box body, fixedly connected with static contact in the box body, the moving contact is in the box body is connected with the static contact cooperation, when the box body was used, be equipped with the louvre directly over the position department of the cooperation department of moving contact and static contact, the louvre is equipped with the wall of keeping off near the edge of cabinet board when using at the louvre, is equipped with the separator with on the box body louvre corresponding position department, the separator separates the louvre into the heat dissipation channel more than 2.

The beneficial effect of cubical switchboard: by adopting the switch cabinet with the structure, the fan is prevented from being installed on the cabinet body, so that the reliability of a product is influenced, the radiating holes are formed above the matching positions of the movable contact and the fixed contact of the contact box in the switch cabinet, the radiating efficiency and the radiating effect are effectively improved, and meanwhile, the safe operation of the electric elements in the cabinet body can be effectively guaranteed.

, the space between the heat dissipation channels is limited to meet the requirement of protection grade IP2X, so that sundries with the diameter larger than 12.5mm can be prevented from entering the contact box to influence the insulation performance of the contact box.

, the separator is limited to protrude out of the box body and is arranged from low to high along the direction from the static contact to the movable contact, by adopting the structure, the creepage distance is increased in aspect, the insulating property of the contact box is ensured, and in addition, the influence of arcing on electrical devices is also avoided in aspect.

, a side baffle is arranged at the vertical direction of the box body along the matching connection direction of the moving contact and the fixed contact, and the side baffle can effectively prevent the interference of an interphase electric field.

, the side baffle is limited to be arranged in a wedge shape gradually rising along the direction from the fixed contact to the movable contact, the side baffle is low at the end close to the fixed contact and high at the end close to the movable contact, the arrangement structure reduces the gas passing path, the heat dissipation effect is fast, and the wedge-shaped arrangement is convenient for the manufacturing in the process.

Drawings

FIG. 1 is a cross-sectional view of the contact box and corresponding assembly;

FIG. 2 is a top view of the contact box and corresponding assembly;

FIG. 3 is a side view of the contact box and corresponding assembly;

FIG. 4 is a schematic view of the air flow path of the upper and lower contact boxes when assembled in the cabinet;

in the figure, 1-branch bus, 2-box, 3-installation insert, 4-static contact, 5-heat dissipation hole, 6-plum blossom contact, 7-moving contact, 8-ventilation duct, 9-bus outlet, 10-contact inlet, 11-separator, 12-side baffle, 13-baffle wall and 14-cabinet plate.

Detailed Description

The following is a further description of an embodiment of the invention, but not limited to, with reference to the drawings.

In the specific embodiment 1 of the contact box, as shown in fig. 1 to 4, the contact box comprises a box body 2 and a ventilation channel 8 penetrating through the box body 2, the box body 2 is an insulating box body molded by pouring epoxy resin, an installation insert 3 for installing a static contact 4 is arranged in the box body, an outlet 9 of a branch bus 1 is arranged at the upper end of the box body 2, a contact inlet 10 is arranged at the lower end of the box body 2, heat dissipation holes 5 are arranged right above a matching part of the static contact and the moving contact when the contact box is used, the heat dissipation holes 5 are divided into three heat dissipation channels by separators 11, baffle walls 13 are arranged at positions, close to a cabinet plate 14, of the heat dissipation holes 5 when the heat dissipation holes are used, the baffle walls 13 separate an electric field from the cabinet plate 14, so that the insulating property of the contact box is ensured, in order to meet the protection grade requirement of the contact box, the space between the heat dissipation channels is not more than 12.5mm, impurities with the diameter being more than 12.5mm can be prevented from entering the contact box to influence the electric property of the contact box, a structure of the contact box, namely, a movable contact box is provided with a movable contact 11 protruding columns, the baffle is of a -time heat dissipation holes, the integral structure with a high-shaped heat dissipation baffle 365, the movable contact box is arranged along the direction of a high-shaped movable contact.

During assembly, a contact box is installed in the switch cabinet, wherein the static contact 4 and the installation insert 3 in the contact box are in threaded connection and fixed in the box body 2, the moving contact 7 is installed in the contact box through a contact inlet 10 and is in matched movable connection with the static contact 4 through a plum blossom contact 6, and the plum blossom contacts 6 are respectively in contact with the bodies of the static contact 4 and the moving contact 7.

In the process of heat dissipation of the contact box, the principle of air circulation heat dissipation is utilized, as shown in fig. 4, cold air flow enters the contact box from an air duct 8 and a contact inlet 10 at the bottom of the box body 2, enters the heat dissipation holes 5 arranged right above the contact parts of the moving contact and the static contact through ventilation holes on the static contact 4 and the moving contact 7 or gaps on the tulip contact 6, heat is discharged out of the contact box through the heat dissipation channels, hot air flow is directly discharged right above the heating parts, the hot air flow path is short and is basically not blocked, and the effect of rapid heat dissipation is achieved.

The embodiment 2 of the contact box is different from the embodiment 1 in that the stationary contact 4 and the box body 2 of the contact box are -body type structures.

Embodiment 3 of the contact box, which differs from embodiment 1 described above in that: the number of the heat dissipation holes 5 is more than 3 through the heat dissipation channel formed by the separator 11.

The switch cabinet comprises a cabinet body and a contact box arranged in the cabinet body, wherein the contact box comprises a box body 2, a static contact 4 is fixedly connected in the box body 2 through an installation insert 3, a moving contact 7 is connected with the static contact 4 in the box body 2 in a matching mode, the structure of the contact box is the same as that of the contact box, and the details are not repeated at .