Waterproof cloth of torque feathering sensor
By adding a waterproof cloth to the outside of the torque pressure automatic feathering sensor, the problem of corrosion and breakage of the sensor was solved, a simple anti-corrosion measure was implemented, the risk of engine shutdown was reduced, and the anti-corrosion performance and economy of the sensor were improved.
Patent Information
- Application Number
- CN202422944106.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing torque pressure automatic feathering sensors are prone to corrosion during field use, which can cause microswitch breakage and lead to engine automatic feathering shutdown.
A waterproof cloth is installed on the outside of the torque pressure automatic propeller sensor. The waterproof cloth is made of balloon cloth and straps are fixed by sewing to form a waterproof cloth structure to divert rainwater to reduce corrosion.
It effectively prevents sensor corrosion and breakage, simplifies the replacement process, reduces the risk of engine shutdown, and improves the sensor's corrosion resistance and cost-effectiveness.
Smart Images
Figure CN223461134U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to aviation technology power device design maintenance technical field relates to a waterproof cloth of torque constant pitch sensor. BACKGROUND
[0002] At present, the torque pressure automatic constant pitch sensor inside the torque pressure automatic constant pitch system of the aircraft repeatedly occurs the corrosion fracture failure of the micro switch, causes the engine automatic constant pitch parking problem. Based on this, it is particularly necessary to carry out necessary corrosion protection. But there is no related protection measures at present.
[0003] By adopting the temporary measure of installing waterproof cloth outside the torque pressure automatic constant pitch sensor, the problem can be effectively avoided. UTILITY MODEL CONTENTS
[0004] The utility model discloses a waterproof cloth of torque constant pitch sensor. The utility model effectively avoids the corrosion fracture of the micro switch inside the torque pressure automatic constant pitch sensor.
[0005] Technical scheme. A waterproof cloth of torque constant pitch sensor, including rectangular cloth, one corner of rectangular cloth is equipped with rectangular gap, and one side of the rectangular gap is fixed with a bandage B on both ends of the short side of the rectangular cloth respectively, and one side of the rectangular gap is fixed with a bandage A on both ends and middle of the other short side of the rectangular cloth respectively, and the rectangular gap is also fixed with a bandage C.
[0006] In the waterproof cloth of torque constant pitch sensor described above, the rectangular cloth is composed of two layers of 300*200mm balloon cloth Fixed by sewing thread.
[0007] In the waterproof cloth of torque constant pitch sensor described above, the bandage A is composed of 220*36mm balloon cloth Fixed by sewing thread after folding;The folding structure is that the two long edges of the balloon cloth are all folded inward along the width direction to form inward flanging;After the balloon cloth is folded along the width direction center line, the two inward flanging are in close contact.
[0008] In the waterproof cloth of torque constant pitch sensor described above, the bandage B is composed of 240*36mm balloon cloth Fixed by sewing thread after folding according to the folding structure of the bandage A.
[0009] In the waterproof cloth of torque constant pitch sensor described above, the bandage C is composed of 330*36mm balloon cloth fixed by sewing thread after folding according to the folding structure of the bandage A.
[0010] In the aforementioned waterproof cloth of the torque feathering sensor, the sewing and fixing structure of the straps and the rectangular wrapping cloth is as follows: the edges of the rectangular wrapping cloth and the straps are both provided with flanges, and the two flanges are buckled together and fixed with stitches; the flanges of the edges of the rectangular wrapping cloth are a two-layer flange structure.
[0011] In the waterproof cloth of the aforementioned torque feathering sensor, the brand of the sewing thread is No. 10 gray cotton thread FZ66316-1995, and the sewing stitch length is 3 to 6 mm.
[0012] Beneficial effects
[0013] The utility model overcomes the technical deficiencies of existing finished products and provides a waterproof cloth which is quick to implement, effective in measures and has good interchangeability.
[0014] This utility model solves the problem of inadequate corrosion protection measures for existing torque pressure automatic feathering sensors, which leads to repeated corrosion and fracture failure of the internal microswitch of the torque pressure automatic feathering sensor, resulting in engine automatic feathering shutdown. A waterproof sheet made of highly hydrophobic material is used to divert rainwater from the engine nacelle, effectively improving the corrosion protection of the torque pressure automatic feathering sensor. This solves the long cycle time required for product improvement and replacement, and the need to deal with field issues. Furthermore, the utility model is simple to manufacture, easy to assemble and disassemble, highly interchangeable, and offers excellent corrosion protection, making the corrosion protection of the torque pressure automatic feathering sensor more economical and easier to maintain. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram for installing the waterproof cloth;
[0016] Figure 2 Outline drawing of the waterproof cloth. DETAILED DESCRIPTION
[0017] The waterproof cloth of the torque feathering sensor of the utility model is described in detail with reference to the accompanying drawings:
[0018] Example 1. A waterproof fabric for a torque feathering sensor, comprising: Figures 1-2 As shown, it includes a rectangular wrapping cloth 1, one corner of which is provided with a rectangular notch 5, and two ends of the short side of the rectangular wrapping cloth 1 on one side of the rectangular notch 5 are respectively sewn and fixed with a strap B3, and two ends and the middle of the other short side of the rectangular wrapping cloth 1 are respectively sewn and fixed with a strap A2, and a strap C4 is also sewn and fixed at the rectangular notch 5; the strap B3 and the strap C4 are arranged in parallel.
[0019] The aforementioned rectangular wrapping cloth 1 is made of two layers of 300×200mm balloon cloth The structure is fixed by sewing with warp stitches.
[0020] The aforementioned strap A2 is made of 220×36mm balloon cloth After being folded, the balloon is fixed by sewing. The folding structure is as follows: both long sides of the balloon cloth are folded inwards along the width direction to form inward folded edges; the two inward folded edges are abutted against each other after the balloon cloth is folded in half along the center line of the width direction.
[0021] The aforementioned strap B3 is made of 240×36mm balloon cloth The binding belt A2 is folded and fixed by sewing according to the folding structure.
[0022] The aforementioned strap C4 is made of 330×36mm balloon cloth folded according to the folding structure of the strap A2 and then fixed with stitches.
[0023] The sewing and fixing structure of the aforementioned strap and rectangular wrapping cloth 1 is as follows: the edge of the rectangular wrapping cloth 1 and the strap are both provided with flanges, and the two flanges are buckled together and fixed by sewing with stitches; the flanges on the edge of the rectangular wrapping cloth 1 are a two-layer flange structure.
[0024] The brand of the aforementioned suture is No. 10 gray cotton thread FZ66316-1995, and the sewing stitch length is 3 to 6 mm.
[0025] The waterproof cloth wrapping cloth of the torque pressure automatic propeller sensor 1 takes into account the shape of the sensor and the installation conditions on the aircraft. The balloon cloth with a size of 300×200mm is used. The silver-grey paint layer on the surface of the material is used to divert rainwater from the gap above the engine nacelle, thereby reducing the corrosion of rainwater on the torque automatic feathering sensor. The sewing thread is grade 10 grey cotton thread FZ66316-1995, sewing two layers with a stitch length of 3 to 6 mm. The shape and size of the finished wrapping cloth can be seen in the figure below. Figure 2 .
[0026] The waterproof cloth for the torque pressure automatic propeller feathering sensor uses three types of straps depending on the aircraft installation status and the location of the torque pressure automatic propeller feathering sensor's fixed base. The specific production method is as follows:
[0027] 1) 3 straps A2, using balloon fabric of size 220×36mm Make, press Figure 2 BB shows the balloon cloth being folded and sewn. The suture thread used is No. 10 gray cotton thread FZ66316-1995 with a stitch length of 3 to 6 mm. The shape and size of the cloth after it is made are shown in the figure. Figure 2 .
[0028] 2) 2 straps B3, using balloon fabric of 240×36mm in size Make, press Figure 2 BB shows the balloon cloth being folded and sewn. The suture thread used is No. 10 gray cotton thread FZ66316-1995 with a stitch length of 3 to 6 mm. The shape and size of the cloth after it is made are shown in the figure.Figure 2 .
[0029] 3) 1 strap C4, using balloon cloth of size 330×36mm Make, press Figure 2 BB shows the balloon cloth being folded and sewn. The suture thread used is No. 10 gray cotton thread FZ66316-1995 with a stitch length of 3 to 6 mm. The shape and size of the cloth after it is made are shown in the figure. Figure 2 .
[0030] The suture positions of the three types of straps and the wrapping cloth 1 are as follows: Figure 2 The three types of sutures of the straps and the wrapping 1 are carried out according to Figure 2 AA diagram for suture.
[0031] While ensuring the reliability of the waterproof cloth, considering the appearance of the waterproof cloth, the waterproof cloth straps and the wrapping cloth are made of the same balloon cloth. Production.
[0032] Prepared waterproof cloth Figure 1 Installation diagram of the torque pressure automatic feathering sensor.
[0033] After the installation work is completed, visually inspect the tarpaulin in conjunction with the routine maintenance of the aircraft, and replace it if it is damaged. Include the tarpaulin Y8-6200-290 in the consumables management. When the engine is replaced, the tarpaulin in good condition should be removed from the old engine and continued to be installed and used on the new engine. It can effectively reduce the problem of failure caused by corrosion and fracture of the micro switch inside the torque pressure automatic propeller sensor, which leads to automatic propeller shutdown of the engine. The utility model overcomes the shortcomings of inadequate waterproof and anti-corrosion measures for the finished product of the torque pressure automatic propeller sensor, long cycle time for re-developing the waterproof and anti-corrosion design of the torque pressure automatic propeller sensor, inconvenient disassembly and assembly, and difficulty in field implementation.
Claims
1. A waterproof cloth for a torque feathering sensor, characterized by, The utility model relates to a kind of rectangular bandages (1), one corner of rectangular bandages (1) is equipped with rectangular notch (5), rectangular bandages (1) short side of one side at rectangular notch (5) is respectively sewn and fixed with a strap B (3) in both ends, rectangular bandages (1) other short side and middle are respectively sewn and fixed with a strap A (2) in both ends, rectangular notch (5) place is also sewn and fixed with strap C (4);The strap B (3) and strap C (4) are arranged in parallel.
2. The waterproof cloth of a torque feathering sensor according to claim 1, characterized by The rectangular wrapping cloth (1) is made of two layers of balloon cloth of 300x200 mm is fixed by sewing.
3. The waterproof cloth of a torque feathering sensor according to claim 1, characterized by The binding tape A (2) is made of balloon cloth of 220*36 mm After folding, it is fixed by sewing. The folding structure is that both long edges of the balloon cloth are folded inward along the width direction to form inward turned edges; and the two inward turned edges are in close contact with each other after the balloon cloth is folded along the width direction center line.
4. The waterproof cloth of the torque feathering sensor according to claim 3, characterized by The bandage B (3) is made of balloon cloth of 240 x 36 mm The bandage B (3) is made of balloon cloth of 240 x 36 mm 5. The waterproof cloth of the torque feathering sensor according to claim 3, characterized by The strap C (4) is composed of 330*36mm balloon cloth, which is folded according to the folding structure of the strap A (2) and then fixed by sewing.
6. The waterproof cloth of a torque feathering sensor according to claim 1, characterized by The sewing structure of the strap and the rectangular bandages (1) is that the edges of the rectangular bandages (1) and the strap are both provided with flanges, and the two flanges are buckled and then fixed by sewing.
7. The waterproof cloth of the torque feather sensor according to any one of claims 1 to 6, characterized in that, The grade of the sewing thread is No.10 gray cotton thread FZ66316-1995, and the sewing needle distance is 3-6mm.