Search

CN-122000235-A - Relay and method for filling material

CN122000235ACN 122000235 ACN122000235 ACN 122000235ACN-122000235-A

Abstract

The application discloses a relay and a method for filling filler, the relay includes a sealed housing, a contact assembly, and a filler. The contact assembly includes a movable contact having a movable contact located in the seal housing and a stationary contact having a stationary contact located in the seal housing for contacting or separating from the stationary contact. The filler is filled in the sealing shell and used for reducing the risk of adhesion between the movable contact and the static contact.

Inventors

  • DAI WENGUANG
  • FU DAPENG
  • GUO XINLONG

Assignees

  • 厦门宏发电力电器有限公司

Dates

Publication Date
20260508
Application Date
20241106

Claims (16)

  1. 1. A relay for a relay of a utility model, characterized by comprising the following steps: A seal housing; A contact assembly including a movable contact having a movable contact located in the seal housing and a stationary contact having a stationary contact located in the seal housing for contacting or separating from the stationary contact, and And the filler is filled in the sealing shell and used for reducing the risk of adhesion between the movable contact and the static contact.
  2. 2. The relay of claim 1, wherein the filler is gaseous.
  3. 3. The relay according to claim 2, wherein the filler is a mixed gas of hydrogen and nitrogen.
  4. 4. A relay according to claim 3, wherein the nitrogen is present in the mixed gas in a volume ratio of less than 80%.
  5. 5. The relay of claim 4, wherein the nitrogen is present in the mixed gas at a volume ratio of 30% -70%.
  6. 6. The relay according to any one of claims 1 to 5, wherein the movable contact is movably provided in the seal housing, and the stationary contact is mounted on the seal housing.
  7. 7. The relay according to claim 6, wherein the seal housing includes an insulating cover, a yoke plate, and a metal cover, the insulating cover being attached to one side surface in a thickness direction of the yoke plate, and the insulating cover and the yoke plate enclosing a first chamber, the metal cover being attached to the other side surface in the thickness direction of the yoke plate, and the insulating cover and the yoke plate enclosing a second chamber, the yoke plate having a through hole penetrating the yoke plate in the thickness direction thereof, the first chamber being in communication with the second chamber through the through hole; The contact assembly comprises two static contact pieces, the static contact pieces are arranged on the insulating cover, the movable contact pieces are movably arranged in the first cavity, and two ends of the movable contact pieces in the length direction are provided with movable contacts and are used for being respectively contacted with or separated from the static contact points of the two static contact pieces.
  8. 8. The relay according to claim 7, wherein the insulating cover includes a ceramic cover and a frame piece, the opening of the ceramic cover being directed toward the yoke plate and being connected to the yoke plate by the frame piece; Wherein, the static contact is installed in the ceramic cover.
  9. 9. The relay according to any one of claims 1 to 5, wherein the sealed case has an injection hole penetrating through an inner wall surface and an outer wall surface of the sealed case; The relay further comprises a pipe fitting, one end of the pipe fitting is connected to the sealing shell, the pipe fitting is communicated with the inside of the sealing shell through the injection hole, and the other end of the pipe fitting is a closed end.
  10. 10. The relay according to claim 9, wherein the outer periphery of the pipe member has an annular step surface, the pipe member is inserted into the injection hole, and the annular step surface abuts against an opening edge of the injection hole.
  11. 11. The relay according to claim 10, further comprising a welding portion that is connected to an outer peripheral surface of the pipe member and that welds the pipe member with the seal housing.
  12. 12. A method of injecting a filler, applied to a relay, the relay including a sealing case and a contact assembly including a moving contact having a moving contact located in the sealing case and a stationary contact having a stationary contact located in the sealing case, the moving contact being for contact with or separation from the stationary contact, the sealing case having an injection hole penetrating an inner wall surface and an outer wall surface of the sealing case, the method comprising: providing a storage tank, wherein the storage tank stores a filler; and injecting the filler into the sealing shell through the injection hole, wherein the filler is used for reducing the risk of adhesion between the movable contact and the fixed contact.
  13. 13. The method of claim 12, wherein the filler is a mixture of hydrogen and nitrogen.
  14. 14. The method of claim 13, wherein the nitrogen is present in the mixed gas at a volume ratio of 30% -70%.
  15. 15. The method according to claim 12, wherein the method further comprises: And one end of the pipe fitting is connected with the sealing shell and communicated with the injection hole, and the other end of the pipe fitting is connected with the storage tank.
  16. 16. The method of claim 15, wherein the method further comprises: And after the filling material injected into the sealing shell reaches a preset amount, removing the tail section of the pipe fitting, and closing the opening at the tail end of the rest pipe fitting.

Description

Relay and method for filling material Technical Field The application relates to the technical field of electric control devices, in particular to a relay and a method for injecting filler. Background A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is generally used in an automatic control circuit. A relay is in fact an "automatic switch" that uses a smaller current to control a larger current. Therefore, the circuit plays roles of automatic adjustment, safety protection, circuit switching and the like. When the high-voltage direct-current relay is used as one of the relays, the problem that the movable contact is closed when a pre-charging loop is not provided or the pre-charging voltage of the pre-charging loop is insufficient possibly caused by faults of other control devices is solved, the voltage difference between two ends of the contact is large at the moment, breakdown arc is easy to generate, the movable contact is fused and adhered, and the service life of the relay is shortened. Disclosure of Invention The embodiment of the application provides a relay and a method for filling filler, which are used for solving the problem that a dynamic contact and a static contact in the related technology are easy to melt and adhere. The relay of the embodiment of the application comprises: A seal housing; A contact assembly including a movable contact having a movable contact located in the seal housing and a stationary contact having a stationary contact located in the seal housing for contacting or separating from the stationary contact, and And the filler is filled in the sealing shell and used for reducing the risk of adhesion between the movable contact and the static contact. According to some embodiments of the application, the filler is in a gaseous state. According to some embodiments of the application, the filler is a mixture of hydrogen and nitrogen. According to some embodiments of the application, the nitrogen comprises less than 80% by volume of the mixed gas. According to some embodiments of the application, the volume ratio of the nitrogen in the mixed gas is 30% -70%. According to some embodiments of the application, the movable contact is movably disposed within the seal housing, and the stationary contact is mounted on the seal housing. According to some embodiments of the present application, the seal housing includes an insulating cover, a yoke plate, and a metal cover, the insulating cover being coupled to one side surface of the yoke plate in a thickness direction and enclosing a first chamber with the yoke plate, the metal cover being coupled to the other side surface of the yoke plate in the thickness direction and enclosing a second chamber with the yoke plate, the yoke plate having a penetration hole penetrating the yoke plate in the thickness direction of the yoke plate, the first chamber communicating with the second chamber through the penetration hole; The contact assembly comprises two static contact pieces, the static contact pieces are arranged on the insulating cover, the movable contact pieces are movably arranged in the first cavity, and two ends of the movable contact pieces in the length direction are provided with movable contacts and are used for being respectively contacted with or separated from the static contact points of the two static contact pieces. According to some embodiments of the application, the insulating cover includes a ceramic cover and a frame sheet, the opening of the ceramic cover faces the yoke plate, and is connected with the yoke plate through the frame sheet; Wherein, the static contact is installed in the ceramic cover. According to some embodiments of the application, the sealing case has an injection hole penetrating an inner wall surface and an outer wall surface of the sealing case; The relay further comprises a pipe fitting, one end of the pipe fitting is connected to the sealing shell, the pipe fitting is communicated with the inside of the sealing shell through the injection hole, and the other end of the pipe fitting is a closed end. According to some embodiments of the application, the outer circumference of the pipe is provided with an annular step surface, the pipe penetrates through the injection hole, and the annular step surface abuts against the opening edge of the injection hole. According to some embodiments of the application, the relay further includes a welding portion connected to an outer circumferential surface of the pipe, and welding the pipe with the seal housing. The method for injecting the filler is applied to a relay, the relay comprises a sealing shell and a contact assembly, the contact assembly comprises a movable contact piece and a static contact piece, the movable contact piece is provided with a movable contact positioned in the sealing shell, the static contact piece is provided with a static contact po