RU97291U1 - DEVICE FOR CURING COMPOSITE MATERIALS - Google Patents

Abstract

 A device for curing composite materials, comprising a housing and a cover with flanges fastened with a bandage consisting of two half rings, interconnected by two rows of threaded ties with nuts located one above the other, characterized in that on the outer surface of the device’s body, below each of the connection zones a half-ring of the bandage, installed with the possibility of deflection by 180º in the vertical plane, a damper that blocks access to the nuts of the couplers when loading the case of the device with working pressure, and p duktor and cylinder, wherein the valve is fixedly secured at one end of the gear shaft, a second end of which forms a pair together with the worm rod of the piston cylinder, the working chamber which conduit communicates with the internal cavity of the body casing.

Description

The utility model relates to the technology of manufacturing products from composite materials, namely, shells of rotation for power structures, for example, sockets of nozzle blocks of solid propellant rocket engines (solid propellant rocket engines).

In the manufacture of products from composite materials form a package of source material, impregnate the resulting package with a binder and place it in a curing device.

A device for curing composite materials is known, comprising a body and a cover with flanges fastened together (see, for example, I.M. Bulanov, V.V. Vorobey Technology of rocket and aerospace structures from composite materials. - M.: Publishing House of MGTU im. N.E.Bauman, 1998 - p. 146-148).

A device for curing composite materials is also known, comprising a housing and a cover with flanges fastened with a bandage (RF patent No. 2322351 - prototype).

To ensure the possibility of installation and ease of use, the bandage is made of two half rings connected by screeds, while for a strong and reliable connection of the half rings of the bandage, two rows of threaded screeds with nuts are placed one above the other.

In the known device, the bandage provides strong bonding of the cover with the body, completely eliminating the possibility of violating the integrity of the joint and subsequent depressurization of the device under the influence of high pressure during the curing of the composite material.

However, as shown by the operation of the known device, in some cases the possibility of premature disassembly of the device is not ruled out if there is a high working pressure in its case, since during operation of the device, access to the coupler nuts connecting the brace half rings is not limited.

The likelihood of unauthorized unscrewing of nuts and premature disassembly is especially high with a large number of simultaneously working devices at one stage of the process at different stages of the curing process.

Thus, during operation of the known device, the complete safety of curing the composite material is not guaranteed.

The technical task of this invention is to ensure complete safety of the curing of the composite material.

The technical result is achieved by the fact that in the device for curing composite materials containing a housing and a cover with flanges fastened with a bandage consisting of two half rings, interconnected by two rows of threaded ties with nuts located on top of each other, on the outer surface of the device casing, below each from the connection zones of the half-rings of the bandage, a damper is installed with the possibility of deflection by 180 degrees in the vertical plane, blocking the access when loading the case of the device with working pressure to the nuts of the couplers, and the gearbox and hydraulic cylinder are fixed, while the shutter is rigidly fixed to one end of the gearbox shaft, the second end of which forms a worm pair together with the piston rod of the hydraulic cylinder, the working cavity of which is connected by a pipeline to the internal cavity of the device body.

The installation on the outer surface of the device casing of dampers having the ability to deviate by 180 degrees in the vertical plane allows the device to simply and reliably block access to the coupler nuts connecting the brace half rings.

Fixing each damper at one end of the gearbox shaft, the second end of which forms a worm pair together with the piston rod of the hydraulic cylinder, the working cavity of which is connected by the pipeline to the internal cavity of the device housing, allows the valve to automatically turn upward in the vertical plane and to ensure that access to the tie nuts is blocked the device’s body working with pressure, and also provide free access to nuts when disassembling the device after curing (in the absence of and pressure in the device case).

Figure 1 shows a structural diagram of the device.

Figure 2 shows a top view of the device.

Figure 3 shows the connection zone of the half rings of the bandage.

A device for curing composite materials contains a housing 1 with a flange 2 and a cover 3 with a flange 4.

Inside the housing 1, a forming mandrel 5 and an elastic diaphragm 6 covering it are placed.

On the outer surface of the housing 1 is made a pipe with a fitting 7 for supplying a working fluid inside the device.

The flange 2 of the housing 1 and the flange 4 of the cover 3 are fastened with a bandage 8.

The bandage 8 consists of two half rings 9 and 10, connected to each other by two rows of threaded ties 11 located one above the other with nuts 12.

Each coupler 11 in the connection zones of the half rings 9 and 10 of the bandage 8 is pivotally mounted at one end on one of the half rings (9 or 10), and the other, threaded end of the coupler 11, equipped with a nut 12, interacts with the other half ring (10 or 9).

On the outer surface of the housing 1 of the device, below each row of screeds 11, it is installed with the possibility of deflection by 180 degrees in the vertical plane of the shutter 13 and the gearbox 14 and the hydraulic cylinder 15 are fixed.

Each valve 13 is placed opposite the nuts 12 and is rigidly fixed on one end of the shaft 16 of the gearbox 14, the second end of the shaft 16 of the gearbox 14 forms a worm pair together with the piston rod 17 of the hydraulic cylinder 15.

The working cavity of the hydraulic cylinder 15 is in communication with the internal cavity of the housing 1 of the device by the pipe 18.

When preparing the device for operation, the elastic diaphragm 6 is hermetically seated in the seat of the housing 1 and fixed.

Set the forming mandrel 5 with composite material in the housing 1, while the elastic diaphragm 6 will cover the forming mandrel 5.

Install the cover 3 on the housing 1, while the shutter 13 are in the lower vertical position.

To fasten the flanges 2 and 4 with the help of the bandage 8, half rings 9 and 10 are installed and connected to each other by ties 11, tightening the nuts 12, to which free access is provided.

After the final assembly of the device, the working fluid (glycerin) is pumped into the housing 1, creating a pressure P in the housing 1, while the working fluid under pressure P is supplied through the pipeline 18 to the working cavity of the hydraulic cylinder 15.

The rod 17 moves, interacting with the shaft 16 of the gearbox 14, the shaft 16 rotates and the valve 13, turning 180 degrees in a vertical plane, is installed in the upper position, blocking access to the twisted nuts 12.

Electric heaters are turned on (not shown in FIG.) And the composite material is cured.

After curing and cooling, the pressure in the housing 1 is relieved, while the piston rod 17 of the hydraulic cylinder 15 returns to its original position, interacting with the shaft 16 of the gearbox 14, and the shutter 13 is installed in the lower vertical position, providing unhindered access to the nuts 12.

Then undock the bandage 8 and make the final disassembly of the device

The proposed device provides complete safety of the curing of the composite material by eliminating the possibility of the beginning of disassembly of the device when its body is loaded with working pressure.

The proposed utility model is used in the manufacture of a number of particularly critical products from composite materials - high-quality large-sized parts of nozzle blocks of solid propellant rocket engines (solid propellant rocket engines).

Claims (1)

A device for curing composite materials, comprising a housing and a cover with flanges fastened with a bandage consisting of two half rings, interconnected by two rows of threaded ties with nuts located one above the other, characterized in that on the outer surface of the device’s body, below each of the connection zones a half-ring of the bandage, installed with the possibility of deflection by 180º in the vertical plane, a damper that blocks access to the nuts of the couplers when loading the case of the device with working pressure, and p duktor and cylinder, wherein the valve is fixedly secured at one end of the gear shaft, a second end of which forms a pair together with the worm rod of the piston cylinder, the working chamber which conduit communicates with the internal cavity of the body casing.