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CN-224233864-U - Welding structure for heating cable of atmospheric pressure sensor

CN224233864UCN 224233864 UCN224233864 UCN 224233864UCN-224233864-U

Abstract

The utility model discloses a welding structure for an atmospheric pressure sensor heating cable, belongs to the technical field of atmospheric pressure sensors, and solves the problem that the conventional atmospheric pressure sensor heating cable is inconvenient to weld; the welding device comprises a brazing filler metal auxiliary forming part and a framework, wherein the brazing filler metal auxiliary forming part is mounted in a straight pipe section of an atmospheric pressure sensor in a fitting mode, the framework is located in a support arm section of the atmospheric pressure sensor, one end of the framework is fixed on the brazing filler metal auxiliary forming part, a spiral wire structure is arranged on the framework, and heating cables are wound on the spiral wire structure and the brazing filler metal auxiliary forming part. According to the utility model, the conical brazing filler metal auxiliary forming piece is tightly attached to the inner wall of the straight pipe section, and the framework with the spiral wire structure is combined to penetrate through the support arm section, so that the heating cable is conveniently and directly wound on the spiral wire structure and the brazing filler metal auxiliary forming piece, and thus the heating cable is integrally supported and positioned in the atmospheric pressure sensor, namely, the complex airspeed tube cavity, and the heating cable is convenient to install and is not easy to deform.

Inventors

  • HUI CHAOHUI
  • ZHONG BIN
  • Que Changyu
  • SUN SIBO
  • CHEN XIAOMEI
  • ZHAO BINBIN
  • YANG WENHAO

Assignees

  • 成都凯天电子股份有限公司

Dates

Publication Date
20260512
Application Date
20250711

Claims (10)

  1. 1. A soldering structure for an atmospheric pressure sensor heating cable, comprising: The brazing filler metal auxiliary forming piece (1), wherein the brazing filler metal auxiliary forming piece (1) is in a conical structure with a hollow inside and is mounted in a straight pipe section (5) of the atmospheric pressure sensor in a fitting mode; Skeleton (2), skeleton (2) are arranged in support arm section (6) of atmospheric pressure sensor, the one end of skeleton (2) is fixed on solder auxiliary forming spare (1), be provided with spiral silk structure (3) on skeleton (2), spiral silk structure (3) with all the coiling has heating cable (4) on solder auxiliary forming spare (1).
  2. 2. The welding structure for the heating cable of the atmospheric pressure sensor according to claim 1, wherein the solder auxiliary molding member (1) is hollowed out or provided with a plurality of through holes.
  3. 3. The welding structure for an atmospheric pressure sensor heating cable according to claim 1, wherein the spiral wire structure (3) is welded to the skeleton (2).
  4. 4. The welding structure for an atmospheric pressure sensor heating cable according to claim 1, wherein the large diameter end of the solder auxiliary molding (1) is welded to the skeleton (2).
  5. 5. The welding structure for an atmospheric pressure sensor heating cable according to claim 1, wherein the wire diameter of the spiral wire structure (3) is larger than the diameter of the heating cable (4).
  6. 6. The welding structure for an atmospheric pressure sensor heating cable according to claim 5, wherein the spiral wire structure (3) includes a first spiral section and a second spiral section, the second spiral section being adjacent to the solder auxiliary molding (1), and the pitch of the first spiral section being larger than the second spiral section.
  7. 7. The welding structure for an atmospheric pressure sensor heating cable according to claim 1, wherein the skeleton (2) is a solder rod having a solid interior.
  8. 8. The assembly welding structure for an atmospheric pressure sensor heating cable according to claim 1, wherein the skeleton (2) is a brazing filler metal cylinder fitted in an atmospheric pressure sensor arm section (6).
  9. 9. The soldering structure for an atmospheric pressure sensor heating cable according to claim 1, wherein the solder auxiliary molding member (1) is made of solder.
  10. 10. The welding structure for an atmospheric pressure sensor heating cable according to claim 1, wherein the spiral wire structure (3) is made of wire solder or wire.

Description

Welding structure for heating cable of atmospheric pressure sensor Technical Field The utility model relates to the technical field of atmospheric pressure sensors, in particular to a welding structure for an atmospheric pressure sensor heating cable. Background The atmospheric pressure sensor is also called airspeed tube, and is an important functional device on the aircraft, and the function of the atmospheric pressure sensor is to transmit the sensed total air pressure and static pressure to an atmospheric data system, and the atmospheric data system calculates the airspeed of the aircraft to participate in the flight control of the aircraft. The aircraft is at the high altitude aircraft, can freeze and block up the pressure measurement hole by low temperature, influences pressure measurement, and the airspeed tube once icing takes place, can make the aircraft receive parameter such as wrong airspeed, atmospheric pressure altitude for pilot or automatic flight control system mishandling causes the aircraft to lose, consequently the airspeed tube need possess the heating function to make it possess the ability of anti-icing and deicing in the flight. The heating function of the airspeed tube is generally realized by adopting resistance heat generated after the armored heating cable is electrified, and in order to ensure that the heating function of the airspeed tube is controllable and reliable, the heating cable is required to be uniformly and adhibitedly arranged and welded on the inner wall of the airspeed tube according to a certain layout. Because the inner cavity of the airspeed tube is generally an elongated and narrow space, and the heating cable is generally a flexible armor structure with phi 1-phi 1.5, the layout, the installation and the adherence welding operation of the heating cable in the airspeed tube are difficult, so the technology is one of the extremely important core technologies for manufacturing the airspeed tube. The traditional heating type airspeed tube welding process comprises 6 steps of heating cable winding forming, solder presetting, heating cable assembling, forming tool demolding, solder supplementing presetting and welding, wherein the winding forming, the assembling and the solder presetting belong to three independent processes of a pre-welding assembling link. The assembly process of the heating cable has the following problems that 1, for the inner wall structure of the airspeed tube with the long and narrow inner cavity, the formed armored heating cable can be assembled into the cavity only by a manual mode, and the heating cable is extremely easy to deform and crack under the condition of no tooling support, so that the consistency and the electrical integrity of the layout of the armored heating cable cannot be realized. 2. Some process methods for forming and assembling heating cables by using split forming tools are also required to take out the forming tools after the heating cables are assembled into the inner wall of the airspeed tube, but the process method is only suitable for straight tube airspeed tubes (the split forming tools are convenient to take out), and is not suitable for internally bent airspeed tubes. 3. For the layout of the complex cavity and the armored heating cable, the assembly difficulty caused by a narrow space is improved, so that the brazing filler metal is difficult to preset to a correct position, and the final brazing quality is affected. In summary, the heating cable of the existing atmospheric pressure sensor is inconvenient to weld. Disclosure of utility model The utility model provides a welding structure for an atmospheric pressure sensor heating cable, which solves the problem that the conventional atmospheric pressure sensor heating cable is inconvenient to weld. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The welding structure comprises a brazing filler metal auxiliary forming piece, wherein the brazing filler metal auxiliary forming piece is in a conical structure with a hollow inside and is mounted in a straight pipe section of the atmospheric pressure sensor in a fitting mode, a framework is located in a support arm section of the atmospheric pressure sensor, one end of the framework is fixed on the brazing filler metal auxiliary forming piece, a spiral wire structure is arranged on the framework, and the heating cable is wound on the spiral wire structure and the brazing filler metal auxiliary forming piece. In this scheme, the supplementary shaping spare of solder is a solder and the integrated auxiliary device of shaping dual function, and it itself is the solder, again for shaping frock, realizes armor heating cable shaping, supplementary assembly and presets the purpose of solder simultaneously, does not need the drawing of patterns after follow-up assembly, also does not need supplementary solder, can directly get into the welding. The conical brazing fille