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Forming method of long-dimension diaphragm sleeve for pulse engine

A molding method and engine technology, which is applied in the field of pulse engine casing molding, can solve the problems of heavy structural weight, difficult heat insulation, small pressure-bearing and opening pressure ratio of the isolation device, etc., and achieve a reasonable transition mode, reduce negative mass, and eliminate stress concentrated effect

Active Publication Date: 2017-01-04
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for forming a long-sized partition sleeve of a pulse engine with a simple molding process and stable pressure-bearing performance, so as to solve the problems of heavy structure weight, small ratio of pressure-bearing and opening pressure, and heat insulation in common isolation devices. Difficult disadvantages

Method used

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  • Forming method of long-dimension diaphragm sleeve for pulse engine
  • Forming method of long-dimension diaphragm sleeve for pulse engine
  • Forming method of long-dimension diaphragm sleeve for pulse engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for forming a long-size diaphragm sleeve of a pulse engine is characterized in that it comprises the following steps:

[0035] 1) Determine the thickness of the thermal insulation layer and the fiber composite layer according to the product structure characteristics and functional characteristics requirements, and prepare the casting mold 1 for sleeve molding and the metal connector 2.1;

[0036] 2) Preparation of joint 2 containing metal connection 2.1

[0037] a. Pour liquid silicone rubber into the cavity of the casting mold 1, vibrate the casting mold 1 after pouring to expel the bubbles in the cavity, and place the casting mold with silicone rubber at room temperature for 24 hours to vulcanize the silicone rubber ; After vulcanization, a silicone rubber mold 3 is obtained;

[0038] b. Sand-blowing the bonding surface of the inner wall of the metal connector 2.1 bonded to the nitrile rubber 4, so that the inner bonding surface of the metal connector 2.1 is uniforml...

Embodiment 2

[0047] A method for forming a long-size diaphragm sleeve of a pulse engine is characterized in that it comprises the following steps:

[0048] 1) Determine the thickness of the thermal insulation layer and the fiber composite layer according to the product structure characteristics and functional characteristics requirements, and prepare the casting mold 1 for sleeve molding and the metal connector 2.1;

[0049] 2) Preparation of joint 2 containing metal connector 2.1

[0050] a. Pour liquid silicone rubber into the cavity of the casting mold 1, vibrate the casting mold 1 after pouring, so as to expel the bubbles in the cavity, and place the casting mold with silicone rubber at room temperature for 48 hours to vulcanize the silicone rubber ; After vulcanization, a silicone rubber mold 3 is obtained;

[0051] b. Sand-blowing the bonding surface of the inner wall of the metal connector 2.1 bonded to the nitrile rubber 4, so that the inner bonding surface of the metal connector 2.1 is un...

Embodiment 3

[0060] A method for forming a long-size diaphragm sleeve of a pulse engine is characterized in that it comprises the following steps:

[0061] 1) Determine the thickness of the thermal insulation layer and the fiber composite layer according to the product structure characteristics and functional characteristics requirements, and prepare the casting mold 1 for sleeve molding and the metal connector 2.1;

[0062] 2) Preparation of joint 2 containing metal connector 2.1

[0063] a. Pour liquid silicone rubber into the cavity of the casting mold 1, vibrate the casting mold 1 after pouring to expel the bubbles in the cavity, and place the casting mold with silicone rubber at room temperature for 36 hours to vulcanize the silicone rubber ; After vulcanization, a silicone rubber mold 3 is obtained;

[0064] b. Sand-blowing the bonding surface of the inner wall of the metal connector 2.1 bonded with EPDM 4 to make the surface of the inner bonding surface of the metal connector 2.1 uniformly ...

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Abstract

The invention discloses a method for forming a long-dimension diaphragm sleeve of a pulse engine. According to the structural characteristics and functional characteristics of the product, the method determines the thickness of the heat-insulating layer and the fiber composite layer, and prepares the casting mold and metal connecting parts for forming the sleeve. Then prepare the joint that contains the metal connector, install the joint on the forming mandrel, carry out manual patching with heat-insulating material on the forming mandrel surface that does not wrap joint, then wind fiber dry yarn on the surface of the manual patching layer; vulcanization obtains The bottom layer of the thermal insulation layer; the carbon fiber is fully soaked in the epoxy resin glue, and the carbon fiber is wet-wound on the surface of the carbon fiber cloth to obtain a fiber composite layer, and the thermal insulation material is continued to be manually pasted on the surface of the composite layer, and the long dimension of the pulse engine is obtained by vulcanization Bulkhead sleeve. The invention is suitable for forming the partition sleeve reinforced by resin-based composite material, the main structure of which is non-metallic material, the total weight of the product is small, and it is beneficial to reduce the negative mass of the engine casing.

Description

Technical field [0001] The invention relates to a method for forming a pulse engine housing, in particular to a method for forming a long-size diaphragm sleeve of a pulse engine. Background technique [0002] As an advanced power system, dual-pulse rocket engine has the advantages of dual-range attack capability, large killing area, good maneuverability, and large no-escape area compared with conventional engines. Pulse engines can provide advanced power platforms for air defense and anti-missile missiles, surface-to-surface ballistic missiles and other weapon systems, thereby improving the interception accuracy of air defense and anti-missile missiles, and enhancing the ability of surface-to-surface ballistic missiles to change trajectory and defense. Isolation device is the core component of impulse engine, which reasonably distributes thrust and the interval time of each impulse to realize optimal management of engine energy. [0003] The more domestically developed isolation d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C70/54B29B11/00C08L63/00C08K5/3445C08G59/42
Inventor 高李帅谭云水邓德凤张志斌余天雄
Owner 湖北三江航天江北机械工程有限公司
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