Precise forming device for special-shaped guide pipe of gas turbine

Abstract

The utility model relates to the technical field of gas turbine special-shaped guide pipe manufacturing, aims to solve the problems that in the prior art, the arc section bending radius is not easy to control, the process is unstable, batch production cannot be achieved, the machining period is long, and the production efficiency is low, and provides a precise forming device for a gas turbine special-shaped guide pipe. The upper die is slidably located at the top of the lower die, and the upper die and the lower die are both located on the same vertical plane. An upper arc-shaped groove matched with the special-shaped guide pipe in size is formed in the side, close to the lower die, of the upper die, a lower arc-shaped groove matched with the special-shaped guide pipe in size is formed in the side, close to the upper die, of the lower die, and the upper arc-shaped groove and the lower arc-shaped groove are matched with each other. And a special-shaped guide pipe is clamped between the upper arc-shaped groove and the lower arc-shaped groove. The utility model has the beneficial effects of simple structure, simple operation, good forming quality, high process stability, short processing period and improved production efficiency, realizes one-step forming of the continuous bending radius conduit, and achieves high-precision bending radius.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing special-shaped conduits of fuel engines, and in particular to a precision molding device for special-shaped conduits of fuel engines. Background Art

[0002] There are a large number of special-shaped ducts in gas turbines, and the molding difficulty coefficient is high. The pressure sensor duct is a very common special-shaped duct in gas turbines. Its main function is to transmit the pressure signal to the pressure sensor. Therefore, the molding quality of the duct is closely related to the monitoring accuracy, stability, reliability and other performance indicators of the gas turbine pressure sensor.

[0003] There are three technical difficulties in catheter forming: first, the pre-bent catheter has continuous arc segments, and there are no straight segments between the arc segments. There is no clamping margin during forming, and the traditional manual bending forming method cannot accurately control the bending radius of the arc segment; second, the traditional manual bending method has the risk of springback and excessive cross-sectional ovality; third, the number of catheters in a single unit is large, and the manual forming process has poor stability and cannot be mass-produced. Utility Model Content

[0004] The utility model aims to provide a precision molding device for special-shaped ducts of fuel engines, so as to solve the problems in the prior art of being unable to accurately control the bending radius of the arc segment of the special-shaped duct, poor process stability, inability to mass produce, long processing cycle and low production efficiency.

[0005] The embodiment of the utility model is achieved as follows:

[0006] The embodiment of the utility model provides a precision molding device for a special-shaped conduit of a combustion engine, which comprises an upper mold and a lower mold;

[0007] The upper die is slidably located on the top of the lower die, and the upper die and the lower die are both located in the same vertical plane;

[0008] An upper arc-shaped groove matching the size of the special-shaped tube is provided on one side of the upper die close to the lower die, and a lower arc-shaped groove matching the size of the special-shaped tube is provided on one side of the lower die close to the upper die, and the upper arc-shaped groove and the lower arc-shaped groove fit each other;

[0009] A special-shaped conduit is clamped between the upper arc-shaped groove and the lower arc-shaped groove.

[0010] When in use, the entire tube bending forming device is placed under the hydraulic press, and the catheter to be processed is placed between the upper arc groove and the lower arc groove corresponding to each other between the upper die and the lower die, and the catheter to be processed is squeezed by sliding the upper die downward until the upper die and the lower die are completely molded together to achieve one-time molding of the catheter.

[0011] The present embodiment discloses a precision molding device for special-shaped ducts of fuel engines, which realizes one-time molding of the ducts by arranging the upper arc groove and the lower arc groove matching the size of the special-shaped ducts on the corresponding sides of the upper mold and the lower mold. Thus, the precision molding device for special-shaped ducts of fuel engines has the beneficial effects of simple structure, simple operation, good molding quality, one-time molding of ducts with continuous bending radius, achieving high-precision bending radius, good process stability, mass production, short processing cycle and improved production efficiency.

[0012] Optionally: the area size of the above-mentioned lower mold is larger than the area size of the above-mentioned upper mold.

[0013] Such an arrangement enables the device to operate more stably during the processing, thereby improving the stability and production efficiency of the special-shaped catheter processing.

[0014] Optionally: a pressing plate is provided at the top of the upper mold, and the center axis of the pressing plate is fixedly connected to the top of the upper mold.

[0015] With such arrangement, the pressure plate can expand the force-bearing area of ​​the upper mold, which is beneficial for supporting the pressure-applying device, ensuring that the upper mold can be evenly stressed, thereby ensuring the molding quality of the special-shaped catheter.

[0016] Optionally: a square groove is provided on the central axis of the pressing plate on one side close to the upper mold, and the top end of the upper mold can be detachably embedded in the square groove.

[0017] In this way, the square groove and the top of the upper mold are adapted to each other, playing a limiting role, preventing the pressure plate and the upper mold from being displaced relative to each other when pressure is applied, thereby avoiding affecting the movement of the upper mold toward the lower mold, further ensuring the one-time molding of the special-shaped catheter.

[0018] Optionally: a bottom plate is provided at the bottom end of the lower mold, and the bottom end of the lower mold is vertically fixedly connected to the central axis of the bottom plate.

[0019] With such arrangement, the bottom plate can support the lower die, and at the same time, the force-bearing area of ​​the lower die is enlarged, the pressure on the lower die is dispersed, and the crushing of the lower die is effectively avoided.

[0020] Optionally: the lower mold is a trapezoidal structure, and the length of one end of the lower mold close to the bottom plate is greater than the length of one end of the lower mold close to the upper mold.

[0021] With such arrangement, the trapezoidal structure of the lower die is more stable and suitable for pressure-bearing components.

[0022] Optionally, a first positioning stopper and a second positioning stopper are respectively provided at the top of both ends of the lower mold, and both ends of the lower mold can be slidably clamped between the first positioning stopper and the second positioning stopper.

[0023] With such arrangement, the upper die is guided by the first positioning block and the second positioning block, thereby achieving the guiding and positioning functions.

[0024] Optionally: a plurality of third positioning blocks and a plurality of fourth positioning blocks are respectively provided on both sides of the lower mold, and the plurality of third positioning blocks and the plurality of fourth positioning blocks are mutually clamped on both sides of the lower mold and fixedly connected to the base plate.

[0025] With such arrangement, the plurality of the third positioning blocks and the plurality of the fourth positioning blocks can limit the sliding position of the upper die, which is beneficial to ensure that the upper die is adapted to the lower die, thereby achieving the pressing of the special-shaped catheter.

[0026] Optionally, the top ends of the plurality of the third positioning blocks and the plurality of the fourth positioning blocks are located on the same horizontal plane as the top ends of the first positioning block and the second positioning block.

[0027] Such arrangement enables the plurality of the third positioning blocks and the plurality of the fourth positioning blocks to better achieve the guiding function. Meanwhile, the plurality of the third positioning blocks and the plurality of the fourth positioning blocks can also limit the pressing plate from continuing to press downward, thereby preventing the special-shaped conduit from being crushed.

[0028] Optionally: several of the above-mentioned third positioning blocks and several of the above-mentioned fourth positioning blocks are right-angled trapezoidal bodies, the large heads of several of the above-mentioned third positioning blocks and several of the above-mentioned fourth positioning blocks are fixedly connected to the above-mentioned base plate, and the right-angled sides of several of the above-mentioned third positioning blocks and several of the above-mentioned fourth positioning blocks are respectively attached to the two side walls of the above-mentioned lower mold.

[0029] In this way, arranging the plurality of the third positioning blocks and the plurality of the fourth positioning blocks into a right-angled trapezoidal body is beneficial to the stability of the plurality of the third positioning blocks and the plurality of the fourth positioning blocks, and at the same time enables the entire device to be stably supported when placed.

[0030] Based on the above description, the utility model discloses a precision molding device for special-shaped ducts of fuel engines, which has the advantages of simple structure, simple operation, good molding quality, one-time molding of continuous bending radius ducts, high-precision bending radius, good process stability, batch production, short processing cycle and improved production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A three-dimensional stereogram of a precision forming device for a special-shaped conduit of a combustion engine in an embodiment of the utility model;

[0033] Figure 2 It is a front view of a precision forming device for a special-shaped conduit of a combustion engine in an embodiment of the utility model;

[0034] Figure 3 It is a cross-sectional view of a precision forming device for a special-shaped conduit of a combustion engine in an embodiment of the utility model;

[0035] Figure 4 It is a top view of a precision forming device for special-shaped ducts of a gas engine in an embodiment of the utility model.

[0036] Icons: 1-upper mold, 2-lower mold, 3-special-shaped catheter, 4-upper arc groove, 5-lower arc groove, 6-pressing plate, 7-square groove, 8-bottom plate, 9-first positioning stopper, 10-second positioning stopper, 11-third positioning stopper, 12-fourth positioning stopper. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example

[0040] See also Figure 1 , Figure 2 , Figure 3 and Figure 4, this embodiment provides a precision molding device for a special-shaped duct of a combustion engine, comprising an upper mold 1 and a lower mold 2;

[0041] The upper die 1 is slidably located on the top of the lower die 2, and the upper die 1 and the lower die 2 are both located in the same vertical plane;

[0042] An upper arc groove 4 matching the size of the special-shaped tube 3 is provided on one side of the upper mold 1 close to the lower mold 2, and a lower arc groove 5 matching the size of the special-shaped tube 3 is provided on one side of the lower mold 2 close to the upper mold 1, and the upper arc groove 4 and the lower arc groove 5 fit each other;

[0043] A special-shaped conduit 3 is clamped between the upper arc-shaped groove 4 and the lower arc-shaped groove 5 .

[0044] When in use, the entire tube bending forming device is placed under the hydraulic press, and the catheter to be processed is placed between the upper arc groove 4 and the lower arc groove 5 corresponding to each other between the upper mold 1 and the lower mold 2. The catheter to be processed is squeezed by sliding the upper mold 1 downward until the upper mold 1 and the lower mold 2 are completely molded to achieve one-time forming of the catheter.

[0045] The present embodiment discloses a precision molding device for a special-shaped conduit for a gas turbine, in which an upper arc-shaped groove 4 and a lower arc-shaped groove 5 matching the size of the special-shaped conduit 3 are arranged on the corresponding sides of the upper mold 1 and the lower mold 2 to realize one-time molding of the conduit, thereby making the precision molding device for the special-shaped conduit for a gas turbine have the beneficial effects of simple structure, simple operation, good molding quality, one-time molding of conduits with continuous bending radius, achieving a high-precision bending radius, good process stability, mass production, short processing cycle and improved production efficiency.

[0046] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The area size of the lower mold 2 is larger than the area size of the upper mold 1, which makes the device run more stably during the processing, and improves the stability and production efficiency of the processing of the special-shaped catheter 3.

[0047] A pressure plate 6 is provided at the top of the upper mold 1, and the central axis of the pressure plate 6 is fixedly connected to the top of the upper mold 1. The pressure plate 6 can expand the force-bearing area of ​​the upper mold 1, which is beneficial to supporting the pressure-applying device, ensuring that the upper mold 1 can be evenly stressed, thereby ensuring the molding quality of the special-shaped catheter 3.

[0048] A square groove 7 is provided on the central axis of the pressing plate 6 on the side close to the upper mold 1. The top of the upper mold 1 can be detachably embedded in the square groove 7. The square groove 7 and the top of the upper mold 1 are adapted to each other to play a limiting role, thereby preventing the pressing plate 6 and the upper mold 1 from displacing each other when pressure is applied, thereby avoiding affecting the movement of the upper mold 1 to the lower mold 2, and further ensuring the one-time molding of the special-shaped catheter 3.

[0049] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A bottom plate 8 is provided at the bottom end of the lower mold 2, and the bottom end of the lower mold 2 is vertically fixedly connected to the central axis of the bottom plate 8. The bottom plate 8 can support the lower mold 2. At the same time, it expands the force-bearing area of ​​the lower mold 2, disperses the pressure on the lower mold 2, and effectively avoids the lower mold 2 from being crushed.

[0050] The lower mold 2 is a trapezoidal structure. The length of one end of the lower mold 2 close to the bottom plate 8 is greater than the length of one end of the lower mold 2 close to the upper mold 1. The trapezoidal structure of the lower mold 2 is more stable and suitable for pressure-bearing components.

[0051] The first positioning stopper 9 and the second positioning stopper 10 are respectively arranged at the top of both ends of the lower mold 2, and the two ends of the lower mold 2 can be slidably clamped between the first positioning stopper 9 and the second positioning stopper 10. The upper mold 1 is guided by the first positioning stopper 9 and the second positioning stopper 10, thereby realizing the guiding and positioning functions.

[0052] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A plurality of third positioning blocks 11 and a plurality of fourth positioning blocks 12 are respectively provided on both sides of the lower mold 2. The plurality of third positioning blocks 11 and the plurality of fourth positioning blocks 12 are mutually clamped on both sides of the lower mold 2 and fixedly connected to the bottom plate 8. The plurality of third positioning blocks 11 and the plurality of fourth positioning blocks 12 can limit the sliding position of the upper mold 1, which is beneficial to ensure that the upper mold 1 is adapted to the lower mold 2, thereby realizing the pressing of the special-shaped catheter 3.

[0053] The top ends of the third positioning blocks 11 and the fourth positioning blocks 12 are located at the same horizontal plane as the top ends of the first positioning blocks 9 and the second positioning blocks 10, so that the third positioning blocks 11 and the fourth positioning blocks 12 can better achieve the guiding function. At the same time, the third positioning blocks 11 and the fourth positioning blocks 12 can also limit the pressure plate 6 from continuing to press downward to avoid the special-shaped catheter 3 from being crushed.

[0054] The plurality of third positioning blocks 11 and the plurality of fourth positioning blocks 12 are all right-angled trapezoids, the large heads of the plurality of third positioning blocks 11 and the plurality of fourth positioning blocks 12 are fixedly connected to the base plate 8, the right-angled sides of the plurality of third positioning blocks 11 and the plurality of fourth positioning blocks 12 are respectively attached to the two side walls of the lower mold 2, and setting the plurality of third positioning blocks 11 and the plurality of fourth positioning blocks 12 into right-angled trapezoids is beneficial to the stability of the plurality of third positioning blocks 11 and the plurality of fourth positioning blocks 12, and at the same time enables the entire device to be stably supported when placed.

[0055] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 Specific use steps of the precision molding device for special-shaped conduits of combustion engines in this embodiment are as follows:

[0056] Step 1: Place the special-shaped conduit 3 to be bent in the lower arc-shaped groove 5 of the lower die 2 of the forming device, and limit the special-shaped conduit 3 to be bent in the lower arc-shaped groove 5 by the first positioning block 9 and the second positioning block 10 on the lower die 2;

[0057] Step 2: the upper mold 1 is fixed above the lower mold 2 by means of the first positioning block 9, the second positioning block 10, the third positioning block 11 and the fourth positioning block 12;

[0058] Step 3, fix the pressing plate 6 directly above the upper mold 1 through the square groove 7;

[0059] Step 4: Place the device under the hydraulic press, and apply a certain pressure directly above the pressing plate 6 to press the upper mold 1 and the lower mold 2 to completely close the mold;

[0060] Step 5, stop the hydraulic press, and after a few minutes of stay, raise the hydraulic press, take out the bent special-shaped conduit 3, and after taking the bent special-shaped conduit 3 out of the mold, the one-time bending of the special-shaped conduit 3 is achieved.

[0061] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A precision molding device for special-shaped ducts of gas turbines, characterized in that: Including upper die and lower die; The upper mold is slidably located on the top of the lower mold, and the upper mold and the lower mold are both located in the same vertical plane; An upper arc-shaped groove matching the size of the special-shaped tube is provided on one side of the upper die close to the lower die, and a lower arc-shaped groove matching the size of the special-shaped tube is provided on one side of the lower die close to the upper die, and the upper arc-shaped groove and the lower arc-shaped groove fit each other; A special-shaped conduit is clamped between the upper arc-shaped groove and the lower arc-shaped groove; A bottom plate is provided at the bottom end of the lower mold, and the bottom end of the lower mold is vertically fixedly connected to the central axis of the bottom plate; A first positioning stopper and a second positioning stopper are respectively arranged at the tops of both ends of the lower mold, and both ends of the lower mold can be slidably clamped between the first positioning stopper and the second positioning stopper; A plurality of third positioning blocks and a plurality of fourth positioning blocks are respectively arranged on both sides of the lower mold, and the plurality of third positioning blocks and the plurality of fourth positioning blocks are mutually clamped on both sides of the lower mold and fixedly connected to the bottom plate.

2. According to claim 1, a precision molding device for special-shaped ducts of combustion engines is characterized by: The area size of the lower mold is larger than the area size of the upper mold.

3. The precision molding device for special-shaped ducts of a combustion engine according to claim 1, characterized in that: A pressing plate is provided at the top of the upper die, and the center axis of the pressing plate is fixedly connected to the top of the upper die.

4. The precision molding device for special-shaped ducts of a combustion engine according to claim 3, characterized in that: A square groove is provided on the central axis of the pressing plate on one side close to the upper die, and the top end of the upper die is detachably embedded in the square groove.

5. The precision molding device for special-shaped ducts of combustion engines according to claim 1, characterized in that: The lower mold is a trapezoidal structure, and the length of one end of the lower mold close to the bottom plate is greater than the length of one end of the lower mold close to the upper mold.

6. The precision molding device for special-shaped ducts of a combustion engine according to claim 1, characterized in that: The top ends of the third positioning blocks and the fourth positioning blocks are located on the same horizontal plane as the top ends of the first positioning blocks and the second positioning blocks.

7. The precision molding device for special-shaped ducts of a combustion engine according to claim 1, characterized in that: Several of the third positioning blocks and several of the fourth positioning blocks are right-angled trapezoids, and the large heads of several of the third positioning blocks and several of the fourth positioning blocks are fixedly connected to the base plate, and the right-angled sides of several of the third positioning blocks and several of the fourth positioning blocks are respectively attached to the two side walls of the lower mold.

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