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CN-122009505-A - Roller jacket type disengaging device

CN122009505ACN 122009505 ACN122009505 ACN 122009505ACN-122009505-A

Abstract

The invention relates to the technical field of aerial refueling, in particular to a roller jacket type disengaging device. The device comprises a matched joint, an upper valve body, an upper main body, a roller jacket, a lower main body and a lower valve body, wherein a valve core with a push rod and a reset spring are arranged in the upper valve body and the lower valve body, the roller jacket is linked through a connecting sheet, a roller is slidably mounted in the lower main body, the roller is matched and locked with a positioning groove on the side wall of the lower valve body, a spring cavity is formed between the inner part of the upper main body and the outer part of the upper main body, and a disengaging spring is positioned in the spring cavity and is propped against the connecting sheet. Under normal state, the valve core ejector rod pushes the valve core open, and when in overload, the valve core is separated from the spring for compression, the roller is separated from the positioning groove for unlocking, and only the lower valve body is separated independently, so that the valve core is sealed by the synchronous reset spring. The device has compact separation structure, quick response, reliable sealing, convenient assembly and maintenance, small separation structure volume and small mass, can avoid secondary damage caused by swing after separation, is suitable for the extreme working condition of high sea condition air refueling, and improves the operation safety.

Inventors

  • WANG HAITAO
  • SUN LUSHENG
  • XIONG WEI
  • GUAN GUANGFENG

Assignees

  • 大连海事大学

Dates

Publication Date
20260512
Application Date
20260310

Claims (10)

  1. 1. The roller jacket type disengaging device is characterized by comprising a matched joint (1), an upper valve body (7), an upper main body inner part (3), a roller jacket (10), a lower main body (11), a lower valve body (12) and a connecting sheet (9); The valve core (13) is arranged in each of the upper valve body (7) and the lower valve body (12) through a return spring (14), and ejector rods (24) are arranged on the end faces of the two valve cores (13) opposite to each other; The upper main body inner part (3) is sleeved on the matched joint (1) in a sliding way, a slot (25) is arranged on the side wall of the upper valve body (7), a connecting sheet (9) radially penetrates through the upper main body inner part (3), and the end part of the connecting sheet is inserted into the slot (25); The lower main body (11) is connected with the upper main body inside (3), a positioning hole (17) is formed in the side wall of the lower main body (11), a roller (16) is slidably installed in the positioning hole (17), a positioning groove (19) is formed in the side wall of the lower valve body (12) and corresponds to the roller (16), a gap is formed between the roller jacket (10) and the lower main body (11), a blocking block (20) is arranged in the position, corresponding to the roller (16), of the roller jacket (10), and the blocking block (20) is located in the gap.
  2. 2. The roller jacketed disengaging device according to claim 1 is characterized by further comprising an upper main body outer part (4), wherein the upper main body outer part (4) is sleeved on the upper main body inner part (3), the upper main body outer part (4) is fixedly connected with the upper main body inner part (3), guide holes (18) are formed in corresponding positions of the upper main body outer part (4) and the upper main body inner part (3), connecting pieces (9) are located in the guide holes (18), a spring cavity (23) is formed between the upper main body outer part (4) and the upper main body inner part (3), a disengaging spring (5) is installed in the spring cavity (23), and two ends of the disengaging spring (5) are respectively abutted against the connecting pieces (9) and the tops of the spring cavity (23).
  3. 3. A roller jacketed disengagement device according to claim 1, characterized in that the positioning hole (17) is internally provided with a sliding sleeve (15), and the roller (16) is slidingly arranged in the sliding sleeve (15).
  4. 4. A roller jacketed disengagement device according to claim 1, characterized in that the positioning end surface of the roller (16) is an arc-shaped surface and the positioning groove (19) is an arc-shaped groove.
  5. 5. A roller jacketed disengagement apparatus according to claim 1, characterized in that the end of the upper valve body (7) and the lower valve body (12) remote from each other is provided with a cross (8), and the return spring (14) is mounted on the cross (8).
  6. 6. A roller jacketed disengagement device according to claim 1, characterized in that the caliber of the connection part of the upper valve body (7) and the lower valve body (12) is gradually reduced, and the end surface of the valve core (13) facing the connection part is a conical surface.
  7. 7. The roller jacket type disengaging device according to claim 1 is characterized in that the fit joint (1) is in threaded connection with the upper valve body (7), the upper main body inner part (3) is in threaded connection with the lower main body (11), and the connecting sheet (9) is connected with the roller jacket (10) through screws.
  8. 8. A roller jacketed disengagement device according to claim 2, characterized in that the upper body outer part (4) is fixedly connected to the upper body inner part (3) by means of bolts (2).
  9. 9. A roller jacketed disengagement device according to claim 1, characterized in that the end surface of the upper valve body (7) facing the lower valve body (12) is provided with a groove (21), and the lower valve body (12) is provided with a boss (22) matching with the groove (21).
  10. 10. A roller jacketed disengagement device according to claim 1, characterized in that a sealing ring (6) is mounted between the upper valve body (7) and the mating fitting (1).

Description

Roller jacket type disengaging device Technical Field The invention relates to the technical field of aerial refueling, in particular to a roller jacket type disengaging device. Background The emergency release device is a key safety assurance unit in the fluid transfer circuit of the helicopter airborne fueling system. The core function of the device is to cope with extreme working conditions generated in a high sea state dynamic environment. When a ship generates large-amplitude multi-degree-of-freedom motions such as rolling, heave and the like due to severe sea conditions, a refueling hose connected between the ship and the helicopter bears complex dynamic loads, so that the hose tension can be increased sharply, and further the helicopter in a hovering state is seriously threatened on the operation safety and the structural integrity. In order to effectively avoid the risks, an important engineering solution is formed by integrating an emergency breaking valve disengaging device at the key position of the refueling hose. The device is preset with a specific mechanical trigger threshold. Once the pulling/tension force applied to the hose system exceeds the safety limit, the snap valve disengaging device performs a quick physical disengaging action, thereby realizing reliable disengagement of the fueling hose from the fueling interface of the helicopter. At the moment of separation, the valve realizes bidirectional automatic and rapid sealing by virtue of a built-in linkage sealing mechanism, so that continuous leakage of fuel oil is effectively blocked, flight safety is ensured, and secondary pollution to marine ecological environment is avoided to the greatest extent. However, the existing emergency release device has complex connection structure between valve bodies, large volume, heavy weight and strong impact in the separation process, and is easy to generate larger swing and impact load at the moment of separation, thereby causing secondary damage to hoses, joints and peripheral equipment and having obvious potential safety hazard. Disclosure of Invention The invention provides a roller jacket type separating device, which aims to solve the problems of complex separating structure and secondary damage caused by heavy mass of the existing emergency separating device. For this purpose, the invention provides the following technical scheme: A roller jacket type disengaging device comprises a mating joint, an upper valve body, an upper main body, a roller jacket, a lower main body, a lower valve body and a connecting sheet; The valve core is arranged in the upper valve body and the lower valve body through a return spring, and ejector rods are arranged on the opposite end surfaces of the two valve cores (the ejector rods are pushed by each other under the normal state to keep the valve core open, the ejector rods are separated during separation, and the valve core is rapidly closed under the action of the return spring to realize sealing); The upper body is internally and slidably sleeved on the matched joint, the side wall of the upper valve body is provided with a slot, the connecting sheet radially penetrates through the upper body, and the end part of the connecting sheet is inserted into the slot; The lower main body is internally connected with the upper main body, a positioning hole is formed in the side wall of the lower main body, a roller is slidably arranged in the positioning hole, a positioning groove is formed in the side wall of the lower valve body and corresponds to the roller, a gap is formed between the roller jacket and the lower main body, a blocking block is arranged in the gap at the position, corresponding to the roller, of the roller jacket, and is located in the gap (the blocking block limits the radial outward movement of the roller under normal state, ensures reliable locking, releases the limitation along with the movement of the roller jacket during separation, enables the roller to withdraw from the positioning groove, and then only the lower valve body is separated from the device, and the separation part is small in size and mass). The novel roller unlocking and separating device comprises an upper main body, and is characterized by further comprising an upper main body outer part, wherein the upper main body outer part is sleeved on the upper main body inner part, the upper main body outer part is fixedly connected with the upper main body inner part, guide holes are formed in corresponding positions of the upper main body outer part and the upper main body inner part, a connecting piece is positioned in the guide holes (guiding the axial movement of the connecting piece), a spring cavity is formed between the upper main body outer part and the upper main body inner part, a separating spring is arranged in the spring cavity, two ends of the separating spring respectively prop against the connecting piece and the top of the spring cavity (the separating spring provides