Thread protection tool for roll coating of combustion chamber of booster
By designing the booster combustion chamber roller coating thread protection tooling, the problem of paint leakage into the thread is solved, efficient insulation processing and quality control are achieved, and production costs and labor intensity are reduced.
Patent Information
- Application Number
- CN202422163990.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-04
AI Technical Summary
During the roll coating process, the coating is prone to leak into the threads on both sides of the combustion chamber, resulting in difficulty in cleaning, affecting the quality of the insulation layer and consuming a lot of manpower and material resources.
A booster combustion chamber roll coating thread protection tool is designed, including a rigid support base and sealing ring, to prevent paint leakage by matching the internal thread of the combustion chamber and tightly covering the end of the combustion chamber.
Effectively prevent paint from penetrating into the threaded roots, reduce labor intensity for cleaning, improve the consistency of the quality of the insulation layer, reduce production costs and improve production efficiency.
Smart Images
Figure CN223300346U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a thread protection tool for roller coating of a booster combustion chamber, belonging to the technical field of roller coating of combustion chambers. Background Art
[0002] The insulation layer inside the solid rocket booster casing is an essential component of the solid rocket booster. It forms a thermally insulating, ablation-resistant layer on the inner surface of the booster's combustion chamber. Currently, this insulation layer is primarily applied using a roller coating process. The combustion chamber, with the coating injected into its cavity, is placed on a roller coater, which rotates at high speed, using friction to drive the high-speed rotation of the chamber. Centrifugal force uniformly deposits the coating on the inner surface of the combustion chamber. The high-speed rotation of the combustion chamber accelerates the airflow over the coating, allowing the coating to dry and set within a certain period of time. After curing, a thick insulation layer is formed.
[0003] In order to ensure that the paint does not overflow or flow out during the roller coating process, it is necessary to seal both ends of the combustion chamber. The sealing tool used is made of annular hard rubber. Since the tooling rubber has poor elasticity and only fits the thread diameter, a small part of the paint will leak into the threads on both sides of the combustion chamber during the high-speed centrifugal roller coating process. After the roller coating is completed, the leaked paint needs to be cleaned manually with a knife, brush, and alcohol, which consumes a lot of manpower and material resources. In addition, some paint residues will fall into the combustion chamber during the cleaning process, affecting the overall quality of the coating. Utility Model Content
[0004] The purpose of the utility model is to solve the problem that after the traditional process of roller coating the inner cavity of the booster combustion chamber shell, there will be paint residue in the threads on both sides of the combustion chamber. For this purpose, a thread protection tool for roller coating of the booster combustion chamber is provided.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] The utility model discloses a thread protection tool for roller coating of a booster combustion chamber, comprising a rigid support base and a sealing ring;
[0007] The rigid support base is an annular member. The front section of the outer wall of the rigid support base is a threaded connection section that matches the internal thread of the booster combustion chamber opening. The front end of the threaded connection section is provided with a sealing ring mounting groove. The rear section of the outer wall of the rigid support base is a positioning section that is not less than the outer diameter of the booster combustion chamber opening.
[0008] The sealing ring is installed in the sealing ring installation groove at the front end of the rigid support base;
[0009] The threaded connection section of the rigid support base is connected to the inner wall of the booster combustion chamber mouth, and the front end surface of the rigid support base positioning section is tightly pressed against the end of the booster combustion chamber.
[0010] The rigid support matrix is made of 30CrMnSiA material.
[0011] A wrench hole is provided on the rear end surface of the rigid support base.
[0012] Beneficial effects
[0013] This thread protection tooling boasts a highly versatile structure. For different sizes of UAV booster combustion chamber casings, only the thread size needs to be adjusted, eliminating the need for redesign. During the roller-coated insulation coating process, it effectively prevents the coating from penetrating the roots of the combustion chamber threads, reducing labor and intensity, lowering costs, and significantly improving production efficiency. It also prevents alcohol solvent from flowing into the combustion chamber inner insulation layer during thread cleaning, ensuring the insulation's appearance quality and improving the overall insulation consistency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural diagram of the thread protection tooling of the utility model;
[0015] Figure 2 This is a diagram of the thread protection tooling of the utility model in use;
[0016] In the figure, 1-rigid support base, 2-sealing ring. DETAILED DESCRIPTION
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Example
[0019] like Figure 1 As shown, the present invention is a thread protection tool for roller coating of a booster combustion chamber, comprising a rigid support base 1 and a sealing ring 2;
[0020] The rigid support base 1 is an annular member. The front section of the outer wall of the rigid support base 1 is a threaded connection section that matches the internal thread of the booster combustion chamber opening. The front end of the threaded connection section is provided with a mounting groove for the sealing ring 2. The rear section of the outer wall of the rigid support base 1 is a positioning section that is not less than the outer diameter of the booster combustion chamber opening.
[0021] The sealing ring 2 is installed in the sealing ring 2 installation groove at the front end of the rigid support base 1;
[0022] like Figure 1As shown, the threaded connection section of the rigid support base 1 is connected to the inner wall of the booster combustion chamber mouth, and the front end surface of the positioning section of the rigid support base 1 is tightly against the end of the booster combustion chamber.
[0023] The rigid support base 1 is made of 30CrMnSiA material.
[0024] A wrench hole is provided on the rear end surface of the rigid support base 1 .
Claims
1. A thread protection tool for roller coating of a booster combustion chamber, characterized by: including a rigid support base and a sealing ring; The rigid support base is an annular member. The front section of the outer wall of the rigid support base is a threaded connection section that matches the internal thread of the booster combustion chamber opening. The front end of the threaded connection section is provided with a sealing ring mounting groove. The rear section of the outer wall of the rigid support base is a positioning section that is not less than the outer diameter of the booster combustion chamber opening. The sealing ring is installed in the sealing ring installation groove at the front end of the rigid support base; The threaded connection section of the rigid support base is connected to the inner wall of the booster combustion chamber mouth, and the front end surface of the rigid support base positioning section is tightly pressed against the end of the booster combustion chamber.
2. A thread protection tool for roller coating of a booster combustion chamber according to claim 1, characterized in that: The rigid support matrix is made of 30CrMnSiA material.
3. A thread protection tool for roller coating of a booster combustion chamber according to claim 1 or 2, characterized in that: A wrench hole is provided on the rear end surface of the rigid support base.