JPS63190667A - Hollow high speed rotary body apparatus - Google Patents

Abstract

PURPOSE:To keep sure sealing performance and stable rotary capacity, by forming a cylindrical body and an end part from fiber reinforced plastic and engaging the inner peripheral surface of the cylindrical part formed to the outer peripheral edge part of the end plate and the outer peripheral surface of the cylindrical body to adhere both of them. CONSTITUTION:Each of end plates 5, 6 is formed into a cup shape and made of fiber reinforced plastic consisting of a carbon fiber and a thermosetting resin along with a cylindrical body 4. The outer peripheral surface of the cylindrical body 4 is engaged with and adhered to the inner peripheral surface of the cylindrical part 12 formed to the outer peripheral edge part of each of the end plates 5, 6. Herein, at the time of high speed rotation, the deformation quantity of the cylindrical part 12 of each of the end plates 5, 6 in the radius direction thereof is smaller than that of the cylindrical body 4. Therefore, at the time of high speed rotation, compression force making an adhesive layer hard to generate a crack or release acts on the engaged and connected part of both of them and sealability is surely held.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a hollow high-speed rotating body device, and more particularly.

The present invention relates to a hollow high-speed rotating body device in which a cylindrical body and end plates are made of fiber-reinforced plastic.

(Prior Art) In some types of plants, it is necessary to prepare a rotating body with a hollow structure, rotate this rotating body at high speed, and flow a fluid substance through the rotating body. Such a rotating body usually includes a cylindrical body, a pair of end plates attached to the cylindrical body so as to close openings at both ends of the cylindrical body, and
It consists of a shaft connected to these end plates. The cylindrical body and the end plates are generally made of a metal material, and the end plates are joined to both ends of one cylindrical body by welding or the like.

When the cylindrical body and the end plate are made of metal, the entire rotating part inevitably becomes heavy and heavy. In order to eliminate such problems, attempts have been made to form the cylindrical body and the end plate from fiber-reinforced plastic with high specific strength. When the cylindrical body and end plate are made of II reinforced plastic 1. As a means for joining the cylindrical body and the end plate, the end plate is formed into a disk shape approximately equal to the inner diameter of the cylindrical body, and the peripheral edge of this end plate is A method is adopted in which fixing rings are applied to both sides, and the outer circumferential surfaces of these fixing rings and the outer circumferential surfaces of the end plates are fixed to the inner circumferential surface of the cylindrical body with adhesive.

However, even with the configuration as described above, there are the following problems. That is, it consists of one cylindrical body and an end plate. When a so-called hollow high-speed rotating body device is rotated at high speed, the cylindrical body and end plate swell in the radial direction due to centrifugal force. With the above configuration, the amount of deformation of one cylindrical body is greater than the amount of deformation of the end plate, and this difference in the amount of deformation causes cracks and peeling of the adhesive layer, causing the problem of leakage of fluid material from this part. there were.

Therefore, in order to eliminate such problems.

A possible method is to press-fit and fix the end plate to the cylindrical body. Even if this press-fitting method is adopted,
To ensure sealing performance, it is necessary to use an adhesive. However, when an adhesive is used in conjunction with the press-fitting method, there is a problem that the adhesive applied to the adhesive surface is pushed out during press-fitting, making it impossible to obtain a sufficient adhesive effect. Additionally, in order to alleviate the deterioration of the adhesive effect due to the extrusion of the adhesive, it is possible to increase the adhesive area by making the end plates thicker, but this makes it difficult to reduce the overall weight. becomes. Furthermore, as a means to ensure sealing performance,
It is also possible to interpose a special sealing member between the cylindrical body and the end plate, but while this method can ensure sealing performance, it is less economical and requires repeated starting and stopping of the rotating body device. At this time, the relative position between the cylindrical body and the end plate is likely to shift, and the balance state of the nine rotating bodies may change, leading to a risk that stable rotational performance may not be obtained.

(Problems to be Solved by the Invention) As described above, with the conventional configuration, it is difficult to satisfy reliable sealing performance, stable rotational performance, and economical efficiency while reducing weight.

Therefore, an object of the present invention is to provide a hollow high-speed rotating body device that can solve all of the above-mentioned problems.

[Structure of the Invention] (Means for Solving the Problems) The present invention is mainly composed of two cylindrical bodies and a pair of end plates that close openings at both ends of the cylindrical bodies, and the interior thereof is a passage for a fluid substance during operation. In the hollow high-speed rotating body device used for the purpose of established,
The inner circumferential surface of this cylindrical portion and the outer circumferential surface of the cylindrical body are fitted and bonded together.

(effect) Each end plate is generally cup-shaped.

The outer circumferential surface of the cylindrical body is fitted and bonded to the inner circumferential surface of the cylindrical portion formed at the outer circumferential edge of each end plate.

During high speed rotation, the radial deformation layer of the cylindrical portion of each end plate is smaller than that of the cylindrical body. therefore.

For the fitting bond between the cylindrical body and end plate during high-speed rotation.

A compressive force is applied that does not easily cause cracks or peeling of the adhesive layer. Therefore, sealing performance is ensured. Furthermore, with the above-described bonding structure, the bonding area between the 8-cylindrical body and the end plate can be set wide without making the end plate thick. Therefore, the cylindrical body and the end plate can be reliably joined without increasing the overall space.

Rotational stability can be improved.

(Example) An embodiment will be described below with reference to one drawing.

FIG. 1 shows a hollow high-speed rotating body according to an embodiment of the present invention with a portion cut away. In the figure, 1 indicates a rotating body body, and 2.3 indicates a rotating shaft coaxially connected to the rotating body body 1.

The rotating body 1 is composed of a cylindrical body 4 and end plates 5 and 6 that are fitted and bonded to the cylindrical body 1 so as to close the openings at both ends of the cylindrical body 4. The cylindrical body 1 is made of carbon TS
1111 made of nitrogen and thermosetting resin is made of reinforced plastic. on the other hand.

End plates 5 and 6 too! They are made of IM-reinforced reinforced plastic, and each consists of an end plate main body 11 and a cylindrical portion 12 formed at the outer peripheral edge of the end plate main body 11. Specifically, these end plates 5 and 6 are manufactured through the following steps. That is, zero-reinforcing fibers are arranged in advance in a predetermined direction, impregnated with a thermosetting resin, and brought into a semi-cured state. One or more prepreg sheets are then pressed to form a cup-shaped product 13. 13, these molded products 13.13 are arranged coaxially with their openings in opposite directions and with a predetermined gap between them, and the molded products 13.13 and the outer periphery are filled with the remaining parts. Concentrically wound reinforcing fibers covered with hardened thermosetting resin! !
14, and then the resin and the resin of the prepreg sheet were cured. Then, with adhesive applied to the outer peripheral surface of both ends of the cylindrical body 4, both ends are fitted into the cylindrical portions 12 of the end plates 5 and 6.

The cylindrical body 4 and each end plate 5, 6 are bonded together by curing the adhesive.

In addition, each end of the 9 rotating shaft 2.3 is coaxially inserted into a hole provided in the center of the corresponding end plate 5.6, and in this state, the contact portion with each end plate 5, 6 is It is fixed to each end plate 5, 6 via adhesive.

Further, in FIG. 1, the introduction port and the discharge port for the fluid substance are omitted.

When the rotating body device having the above configuration is rotated at high speed, the cylindrical body 4 is deformed in a direction in which the outer diameter increases due to the influence of centrifugal force.
Further, the cylindrical portion 12 of each end plate 5, 6 is also deformed in the same manner. However, since the cylindrical portion 12 is supported by the disc-shaped end plate main body 11, the amount of deformation thereof is smaller than that of the cylindrical body 4. For this reason.

Compressive force is applied to the fitting and bonding portions between the cylindrical body 4 and the cylindrical portions 12 of the end plates 5 and 6. This compressive force is
No cracking or peeling occurs in the adhesive layer of the fitting adhesive part. Therefore, the sealing performance at the fitting adhesive portion is ensured. Also.

With the above configuration, the weight of the end plates 5 and 6 is not increased, and it is easy to increase the fitting adhesive area between the cylindrical body 4 and the cylindrical portion 12. Therefore, the two cylindrical bodies 4 and each end plate 5, 6 can be firmly connected, and as a result, sufficient joint strength can be exhibited during high-speed rotation, and stability in one rotation can also be improved. Can be done. In addition, the end plates 5 and 6 themselves have a function as an end plate.

Since it has the function of improving the bonding strength with the cylindrical body 4 and the sealing performance, the number of parts can be reduced compared to the case of using a fixing ring, and economical efficiency can also be improved. can.

In addition, when each end plate 5.6 is manufactured through the process explained in this example, forming the cup-shaped molded product 13.13 by press working effectively works to manufacture the end plate with good dimensional accuracy. Moreover, mass productivity can be improved. In addition, if the end plate body 11 is connected to the axial center position of the cylindrical portion 12 as in this embodiment, the length of the end plate is 1 m.
Since the centrifugal force applied to the upper and lower ends of the cylindrical portion 12 in the figure can be balanced, the bending force applied to the cylindrical portion 12 can be alleviated, and the mechanical strength of the cylindrical portion 12 can be increased. The cylindrical portion located on the side not fitted with the cylindrical body 4 can be used for rotational balance adjustment.

The present invention is not limited to the embodiments described above, but can be modified in various ways. That is, in the embodiment described above, each end plate is formed into a boob shape, but as shown in FIG. , the end plate may have a configuration in which the entire end plate is cup-shaped. Also.

The inside of the end plate does not necessarily have to be flat. 1 more
A cylindrical body does not need to have a uniform diameter throughout.

For example, a bellows-like portion may be interposed in the middle.

[Effects of the Invention] As described above, according to the present invention, 1 the cylindrical body and the end plate are made of fiber-reinforced plastic, which improves sealing performance, 1 mechanical strength, and 1-rotation stability without sacrificing the advantages of forming the cylindrical body and the end plate from fiber-reinforced plastic. It is possible to provide a hollow high-speed rotating body device that satisfies both economical and economic efficiency.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a hollow high-speed rotating body device according to an embodiment of the present invention, and FIG. 2 is a side view showing only the main parts of a hollow high-speed rotating body device according to another embodiment of the present invention. FIG. 2 is a side view showing a partially cutaway view of the device; 1... Rotating body body, 2, 3... Rotating shaft, 4... Cylindrical body. 5.6... End plate, 11... End plate main body, 12... Cylindrical part. Applicant's agent Patent attorney Takehiko Suzue Figure 1

Claims (2)

[Claims] (1) A hollow high-speed rotating body device mainly composed of a cylindrical body and a pair of end plates that close openings at both ends of the cylindrical body, and whose interior is provided for passage of a fluid substance during operation, wherein the cylindrical body and the A pair of end plates are each made of fiber-reinforced plastic, and a cylindrical part extending at least toward the cylindrical body is integrally formed on the outer peripheral edge of each of the end plates, and the inner peripheral surface of the cylindrical part and the outer peripheral surface of the cylindrical body are fitted and adhesively bonded to each other. (2) Each end plate is made of two prepreg sheets in which reinforcing fibers are arranged in a predetermined direction in advance and impregnated with a thermosetting resin to make a semi-cured state, at least one of which is formed into a cup shape. Claim 1, characterized in that the molded products are arranged coaxially at predetermined intervals, and a fiber-reinforced plastic layer is arranged between these molded products and on the outer periphery, and formed integrally. The hollow high-speed rotating body device according to item 1.