CN217450750U - Internal cavity filling device for turbine blade - Google Patents

Abstract

The utility model discloses an inner chamber filling device for turbine blade, including base (1), base (1) upper portion is equipped with cavity (2), is equipped with circular passageway (3) that are used for placing the syringe needle tubing in cavity (2), and circular passageway (3) one end is equipped with discharge gate (4) that are used for placing the syringe needle, and cavity (2) one end has many connecting rods (5) through threaded connection, and connecting rod (5) one end is fixed with backup pad (6) through the nut. The utility model discloses can effectively increase the injection pressure of packing material to improve the filling effect that the inside complicated loculus of blade was said, reach the protective effect in better turbine blade laser system hole.

Description

Internal cavity filling device for turbine blade

Technical Field

The utility model relates to a turbine blade anchor clamps equipment field especially is used for turbine blade's inner chamber filling device.

Background

When the turbine blade is subjected to laser hole making, protective slurry is filled in the hole making process to protect the wall, and the filling effect directly influences the wall protection effect in the hole making process. When the hole is made in a direction without protective materials or the protective materials are not tightly filled, laser cannot be effectively blocked, damage to the wall can be caused, and the inner cavity of the turbine blade is particularly obvious when the inner cavity is too small. It is therefore critical to achieve effective filling of the internal channels. As technology advances, the internal channels of turbine blades become increasingly complex, having more and more complex structures, resulting in more difficult filling of the internal small channels. For example, chinese patent publication No. CN113770567A discloses a filling system for laser drilling protection material for turbine blade, which includes: the adhesive container comprises a container, a vacuum pump, a three-way valve and an end plug, wherein any two ends of the three-way valve are communicated to the container and the vacuum pump respectively through a conduit, the other end of the three-way valve is communicated from one end of the end plug to the other end of the end plug through a conduit, and the container is filled with an adhesive. The system can meet the requirements aiming at simple cavities, but can not ensure that the filling effect in the cavity meets the requirements for complex small cavities, the inner cavity of each blade has some tiny deviation, few materials can cause the generation of the cavity, and the adhesive can not be ensured to be fully permeated into each small cavity, so that the phenomena of insufficient adhesive and non-uniformity exist, and the cavity is finally caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an inner chamber filling device for turbine blade. The utility model discloses can effectively increase the injection pressure of packing material to improve the filling effect that the inside complicated loculus of blade was said, reach the protective effect in better turbine blade laser system hole.

The technical scheme of the utility model: the inner cavity filling device for the turbine blade comprises a base, wherein a cavity is arranged at the upper part of the base, a circular channel for placing a syringe needle tube is arranged in the cavity, a discharge hole for placing a syringe needle is formed in one end of the circular channel, a plurality of connecting rods are connected to one end of the cavity through threads, a supporting plate is fixed to one end of each connecting rod through a nut, a push rod is matched with the supporting plate through threads in the supporting plate, a power-assisted rod is arranged at one end of the push rod, the other end of the push rod extends into the circular channel, a push block is arranged at the end part of the push rod and is attached to the inner wall of the circular channel, and one end of the push block is abutted against the syringe needle tube; the other end of the cavity is provided with a clamping head, a feed inlet is arranged on the clamping head, and the syringe needle penetrates through the feed inlet and extends into a clamping groove of the clamping head.

In the inner cavity filling device for the turbine blades, the clamping plates are arranged on two sides of the upper portion of the base, the clamping convex strips are arranged at the end portions of the clamping plates, grooves are formed in two sides of the upper portion of the cavity, and the clamping convex strips are arranged in the grooves.

In the filling device for the inner cavity of the turbine blade, the clamping teeth are arranged on two sides of the other end of the cavity through the mounting plate, the tooth grooves are formed in the side portions of the clamping heads, and the clamping teeth are matched with the tooth grooves.

In the filling device for the inner cavity of the turbine blade, the push block is provided with a sealing ring.

Compared with the prior art, the utility model has the advantages of it is following:

1. in the utility model, firstly, an injection needle tube filled with filling materials is placed in a circular channel in a cavity, an injector needle head passes through a discharge port and a feed port, a turbine blade is clamped into a clamping head, the injection needle head extends into an inner cavity of the turbine blade, a boosting rod is rotated to drive a push rod to rotate, so that a push block moves inwards, the push block is abutted against a movable rod of the injector needle tube, and the filling materials are pushed into a cavity channel of the turbine blade; the push block is driven to move through the threaded push rod, so that better pushing stability can be guaranteed firstly, and then the pushing force can be increased, so that the injection pressure of filling materials is increased, the filling effect of small cavities inside the blades is improved, and a better protection effect of laser hole making of the turbine blades is achieved.

2. The base upper portion both sides be equipped with the cardboard, the cardboard tip is equipped with the chucking sand grip, cavity upper portion both sides be equipped with the recess, the chucking sand grip sets up in the recess, carries out better connection to the cavity, secondly makes things convenient for the separation of base and cavity.

3. The cavity other end both sides be equipped with the latch through the mounting panel, the lateral part of pressing from both sides tight head is equipped with the tooth's socket, the latch cooperatees with the tooth's socket, presss from both sides tight head and has a plurality of different models, adopts the block structure to conveniently change and presss from both sides tight head.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a push block;

fig. 3 is a schematic view of a groove.

Description of the reference symbols in the drawings: 1-base, 2-cavity, 3-circular channel, 4-discharge port, 5-connecting rod, 6-supporting plate, 7-push rod, 8-boosting rod, 9-push block, 10-clamping head, 11-feed port, 12-clamping plate, 13-clamping convex strip, 14-groove, 15-clamping tooth, 16-tooth groove and 17-sealing ring.

Detailed Description

The present invention will be further described with reference to the following drawings and examples, but the invention is not limited thereto.

Example (b): an inner cavity filling device for turbine blades comprises a base 1, a cavity 2 is arranged at the upper part of the base 1, a circular channel 3 for placing a syringe needle tube is arranged in the cavity 2, a discharge hole 4 for placing a syringe needle is arranged at one end of the circular channel 3, one end of the cavity 2 is connected with a plurality of connecting rods 5 through threads, one end of each connecting rod 5 is fixed with a supporting plate 6 through a nut, a push rod 7 is matched with the inside of the supporting plate 6 through threads, one end of the push rod 7 is provided with a boosting rod 8, the other end of the push rod 7 extends into the circular channel 3, and the end of the push rod 7 is provided with a push block 9, as shown in figure 2, the push block 9 is provided with a sealing ring 17, a certain gap is formed between the push block and the circular channel when the push block is matched with the circular channel, a sealing ring is sleeved on the circumferential surface of the push block, the push block 9 is attached to the inner wall of the circular channel 3, the push block can stably move, and one end of the push block 9 is abutted to a needle tube of the injector; the other end of the cavity 2 is provided with a clamping head 10, the clamping head 10 is provided with a feeding hole 11, the syringe needle tube is arranged in the circular channel 3, and the syringe needle passes through the feeding hole 11 and extends into the clamping groove of the clamping head 10. The base 1 upper portion both sides be equipped with cardboard 12, cardboard 12 tip is equipped with chucking sand grip 13, 2 upper portion both sides of cavity be equipped with recess 14, as shown in fig. 3, chucking sand grip 13 sets up in recess 14, carries out better connection to the cavity, secondly makes things convenient for the separation of base and cavity. 2 other end both sides of cavity be equipped with latch 15 through the mounting panel, the lateral part of pressing from both sides tight head 10 is equipped with tooth's socket 16, latch 15 cooperatees with tooth's socket 16, press from both sides tight head and have a plurality of different models, adopt the block structure to conveniently change and press from both sides tight head.

The filling method of the internal cavity channel of the laser hole of the turbine blade comprises the following specific steps:

the method comprises the following steps: proportionally stirring the filling protective materials;

step two: filling the filling protective material into the injector, and performing bubble discharging operation;

step three: the blade tenon tooth is attached to the clamping head, the needle head enters an air inlet, the injector is connected with the needle head, and the orifices related to the cavity are blocked except the corresponding air outlet;

step four: rotating the boosting rod to inject protective materials into the cavity;

step five: standing upside down, and entering an oven for stage temperature rise to solidify the protective material to finish filling.

The proportion of the protective materials is different, and the conclusion is drawn by combining the protective effect on the laser and the best filling effect; the bubble removing operation is performed to prevent the protective material from filling the cavity channel with bubbles, so that the cavity is formed and the protective effect during laser drilling is affected. When the filling material is injected and a small cavity is arranged in the cavity, the effect that the corresponding air outlet hole of the cavity on the blade tip has the discharge of the stable flocculent protective material needs to be ensured; when the filling material is injected, the effect that the corresponding air outlet on the blade tip has stable flocculent protective material to be discharged is required to be achieved, and the cavity channel is judged to be filled. The protective material is solidified by using an oven, so that the uniform effect is achieved, and the shrinkage degree is detected through a plurality of actual filled CT, and the shrinkage of the protective material is determined.

The utility model discloses a theory of operation: firstly, an injection needle tube filled with filling materials is placed in a circular channel in a cavity, a syringe needle penetrates through a discharge port and a feed port, a turbine blade is clamped into a clamping head, the injection needle extends into an inner cavity of the turbine blade, a boosting rod is rotated to drive a push rod to rotate, so that a push block moves inwards, the push block is abutted against a movable rod of the syringe needle tube, and the filling materials are pushed into a cavity channel of the turbine blade; the push block is driven to move through the threaded push rod, so that better pushing stability can be guaranteed firstly, pushing force can be increased secondly, and accordingly injection pressure of filling materials is increased, filling effect of complex small cavities inside the blades is improved, and better protection effect of laser hole making of the turbine blades is achieved.

Claims (4)

1. A cavity filling device for a turbine blade, characterized in that: the injection molding machine comprises a base (1), wherein a cavity (2) is arranged at the upper part of the base (1), a circular channel (3) for placing an injection syringe needle tube is arranged in the cavity (2), a discharge hole (4) for placing an injection syringe needle is formed in one end of the circular channel (3), a plurality of connecting rods (5) are connected to one end of the cavity (2) through threads, a supporting plate (6) is fixed to one end of each connecting rod (5) through nuts, a push rod (7) is matched with the inside of the supporting plate (6) through threads, a boosting rod (8) is arranged at one end of the push rod (7), the other end of the push rod (7) extends into the circular channel (3), a push block (9) is arranged at the end part of the push rod (7), the push block (9) is attached to the inner wall of the circular channel (3), and one end of the push block (9) is abutted to the injection syringe needle tube; the other end of the cavity (2) is provided with a clamping head (10), the clamping head (10) is provided with a feeding hole (11), and the syringe needle penetrates through the feeding hole (11) and extends into a clamping groove of the clamping head (10).

2. The cavity filling apparatus for turbine blades as claimed in claim 1, wherein: the clamping plate is characterized in that clamping plates (12) are arranged on two sides of the upper portion of the base (1), clamping convex strips (13) are arranged at the end portions of the clamping plates (12), grooves (14) are formed in two sides of the upper portion of the cavity (2), and the clamping convex strips (13) are arranged in the grooves (14).

3. The cavity filling apparatus for turbine blades as claimed in claim 1, wherein: the clamping head is characterized in that clamping teeth (15) are arranged on two sides of the other end of the cavity (2) through the mounting plate, tooth grooves (16) are formed in the side portions of the clamping heads (10), and the clamping teeth (15) are matched with the tooth grooves (16).

4. The cavity filling apparatus for turbine blades as claimed in claim 1, wherein: and a sealing ring (17) is arranged on the push block (9).

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