Manufacturing die of expansion joint for power plant chimney

Abstract

The utility model provides a manufacturing die of an expansion joint for a power plant chimney and belongs to the technical field of die machining. Comprising an upper die and a lower die which are used for punch forming of an expansion joint splicing section, the lower surface of the upper die is made into a male die surface matched with the inner surface of the expansion joint splicing section, and the upper surface of the lower die is made into a female die surface matched with the outer surface of the expansion joint splicing section. The expansion joint die is manufactured according to the structural characteristics of the expansion joint splicing section of the titanium alloy expansion joint used in a power plant chimney, the structural quality of the expansion joint splicing section machined through the expansion joint die meets the drawing requirement, the machining quality of the titanium alloy expansion joint is guaranteed, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold manufacturing, and in particular relates to a manufacturing mold for a titanium expansion joint used for a power plant chimney. Background Art

[0002] Expansion joints used in power plant chimneys were previously made of fluororubber. Since fluororubber is a rubber material, it is easy to age after a period of use, losing the elastic properties that the expansion joint should have, poor corrosion resistance, and a short service life. In order to solve this problem, a titanium alloy expansion joint has been developed. The titanium alloy expansion joint is annular in structure. Figure 6 As shown, since the chimney has a large diameter, such as Φ8000mm, the diameter of the corresponding annular expansion joint is also large, so it cannot be processed as a whole. Even if it can be processed as a whole, it is inconvenient to transport and must be divided into multiple sections, and the cost is very high. Now, a plurality of arc-shaped expansion joint splicing sections 1 are made of 1.6mm thick titanium plates and arranged in a circle and spliced ​​in sequence; see Figure 7 , Figure 8 As shown, the expansion joint splicing section 1 is composed of an arc-shaped middle main body plate 1-1 and two side connecting plates 1-2, and the two side connecting plates 1-2 and the arc-shaped middle main body plate 1-1 are connected by an arc transition connection 1-3, wherein the arc-shaped middle main body plate 1-1 is an arc-shaped structure in both the X direction and the Y direction, so the processing difficulty is relatively large. In order to make the processing quality of the expansion joint splicing section 1 of the titanium alloy expansion joint more standard, it is necessary to design a set of manufacturing molds for expansion joints for power plant chimneys. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a manufacturing mold for expansion joints for power plant chimneys. The utility model manufactures the expansion joint mold according to the structural characteristics of the expansion joint splicing section of the titanium alloy expansion joint used in the power plant chimney. The structural quality of the expansion joint splicing section processed by the expansion joint mold meets the requirements of the drawings, thereby ensuring the processing quality of the titanium alloy expansion joint and improving the processing efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The manufacturing mold of the expansion joint for the power plant chimney comprises an upper mold and a lower mold for stamping and forming the expansion joint splicing section, wherein the lower surface of the upper mold is made into a convex mold surface adapted to the inner surface of the expansion joint splicing section, and the upper surface of the lower mold is made into a concave mold surface adapted to the outer surface of the expansion joint splicing section.

[0006] To further define the above scheme, the punch surface at the lower part of the upper mold includes an intermediate punch surface, and the intermediate punch surface is an arc convex surface structure that is adapted to the X-direction arc and Y-direction arc of the arc-shaped intermediate main body plate of the expansion joint splicing section; two side punch surfaces are provided on both sides of the intermediate punch surface, and the two side punch surfaces are arc convex surface structures that are adapted to the X-direction arc of the two side connecting plates of the expansion joint splicing section; the two side punch surfaces are connected to the intermediate punch surface by an arc transition punch surface, and the arc transition punch surface is adapted to the arc transition connection between the arc-shaped intermediate main body plate on the expansion joint splicing section and the two side connecting plates.

[0007] To further define the above scheme, the die surface on the upper part of the lower die includes an intermediate die surface, and the intermediate die surface is an arc concave surface structure that is adapted to the X-direction arc and Y-direction arc of the arc-shaped intermediate main body plate of the expansion joint splicing section; two side die surfaces are provided on both sides of the intermediate die surface, and the two side die surfaces are arc concave surface structures that are adapted to the X-direction arc of the two side connecting plates of the expansion joint splicing section; the two side die surfaces are connected to the intermediate die surface by an arc transition die surface, and the arc transition die surface is adapted to the arc transition connection between the arc-shaped intermediate main body plate and the two side connecting plates on the expansion joint splicing section.

[0008] As a further limitation of the above scheme, upper die connection and fixing grooves are provided on both sides of the upper die, and lower die connection and fixing grooves are provided on both sides of the lower die.

[0009] The advantages of this utility model compared with the prior art:

[0010] This scheme aims at the structural characteristics of the expansion joint splicing section of the titanium alloy expansion joint used in the chimney of the power plant, and produces an expansion joint mold consisting of an upper mold and a lower mold. Since the lower surface of the upper mold is made into a convex mold surface that matches the inner surface of the expansion joint splicing section, and the upper surface of the lower mold is made into a concave mold surface that matches the outer surface of the expansion joint splicing section, the structural quality of the expansion joint splicing section processed by the expansion joint mold meets the requirements of the drawing, thereby ensuring the processing quality of the titanium alloy expansion joint, improving processing efficiency, saving costs, and increasing service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the mold in the utility model;

[0012] Figure 2 It is a structural schematic diagram of the upper mold in the utility model;

[0013] Figure 3 For the utility model Figure 2 The structural comparison diagram of the left end face and the AA section;

[0014] Figure 4 It is a structural schematic diagram of the lower mold in the utility model;

[0015] Figure 5 For the utility model Figure 4 The structural comparison diagram of the left end face and BB section;

[0016] Figure 6 It is a structural schematic diagram of an expansion joint for a power plant chimney formed by splicing expansion joint splicing sections in the utility model;

[0017] Figure 7 It is a three-dimensional structural schematic diagram of the splicing section of the expansion joint in the utility model;

[0018] Figure 8 It is a schematic diagram of the cross-sectional structure of the spliced ​​section of the expansion joint in the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0021] See also Figure 1-8 , describe the embodiments of the present utility model in detail.

[0022] Example: Manufacturing mold for expansion joints for power plant chimneys, see Figure 1 As shown, it includes an upper die 2 and a lower die 3 for stamping and forming an expansion joint splicing section 1, wherein the lower surface of the upper die 2 is formed into a convex die surface adapted to the inner surface of the expansion joint splicing section 1, and the upper surface of the lower die 3 is formed into a concave die surface adapted to the outer surface of the expansion joint splicing section 1.

[0023] In the above-mentioned embodiment, an expansion joint mold consisting of an upper mold and a lower mold is produced according to the structural characteristics of the expansion joint splicing section of the titanium alloy expansion joint used in the chimney of a power plant. Since the lower surface of the upper mold is made into a convex mold surface that matches the inner surface of the expansion joint splicing section, and the upper surface of the lower mold is made into a concave mold surface that matches the inner surface of the expansion joint splicing section, the structural quality of the expansion joint splicing section processed by the expansion joint mold meets the requirements of the drawing, thereby ensuring the processing quality of the titanium alloy expansion joint and improving the processing efficiency.

[0024] In a specific embodiment, see Figure 2 , Figure 3 As shown, the punch surface at the lower part of the upper mold 2 includes an intermediate punch surface 2-1, and the intermediate punch surface 2-1 is an arc convex structure adapted to the X-direction arc and the Y-direction arc of the arc-shaped intermediate main body plate 1-1 of the expansion joint splicing section 1; two side punch surfaces 2-2 are provided on both sides of the intermediate punch surface 2-1, and the two side punch surfaces 2-2 are arc convex structures adapted to the X-direction arc of the two side connecting plates 1-2 of the expansion joint splicing section 1; the two side punch surfaces 2-2 are connected to the intermediate punch surface 2-1 through an arc transition punch surface 2-3, and the arc transition punch surface 2-3 is adapted to the arc transition connection 1-3 between the arc-shaped intermediate main body plate 1-1 and the two side connecting plates 1-2 on the expansion joint splicing section 1.

[0025] In a specific embodiment, see Figure 4 , Figure 5 As shown, the die surface on the upper part of the lower die 3 includes an intermediate die surface 3-1, and the intermediate die surface 3-1 is an arc concave structure adapted to the X-direction arc and the Y-direction arc of the arc-shaped intermediate main body plate 1-1 of the expansion joint splicing section 1; two side die surfaces 3-2 are provided on both sides of the intermediate die surface 3-1, and the two side die surfaces 3-2 are arc concave structures adapted to the X-direction arc of the two side connecting plates 1-2 of the expansion joint splicing section 1; the two side die surfaces 3-2 are connected to the intermediate die surface 3-1 by an arc transition die surface 3-3, and the arc transition die surface 3-3 is adapted to the arc transition connection 1-3 between the arc-shaped intermediate main body plate 1-1 and the two side connecting plates 1-2 on the expansion joint splicing section 1.

[0026] In a specific embodiment, see Figure 1 As shown, upper die connection fixing grooves 2-4 are provided on both sides of the upper die 2, and lower die connection fixing grooves 3-4 are provided on both sides of the lower die 3, which are used for fixing the die on the punching machine.

[0027] The expansion joint splicing section processed by the mold made by the utility model meets the quality requirements and ensures the product performance.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. The manufacturing mold of expansion joint for power plant chimney is characterized by: It comprises an upper die (2) and a lower die (3) for stamping and forming an expansion joint splicing section (1); the lower surface of the upper die (2) is formed into a convex die surface adapted to the inner surface of the expansion joint splicing section (1); and the upper surface of the lower die (3) is formed into a concave die surface adapted to the outer surface of the expansion joint splicing section (1).

2. The manufacturing mold for expansion joints for power plant chimneys according to claim 1 is characterized in that: The convex die surface at the lower part of the upper die (2) comprises an intermediate convex die surface (2-1), the intermediate convex die surface (2-1) being an arc convex surface structure adapted to the X-direction arc and the Y-direction arc of the arc-shaped intermediate main body plate (1-1) of the expansion joint splicing section (1); two side convex die surfaces (2-2) are provided on both sides of the intermediate convex die surface (2-1), the two side convex die surfaces (2-2) being an arc convex surface structure adapted to the X-direction arc of the two side connecting plates (1-2) of the expansion joint splicing section (1); the two side convex die surfaces (2-2) and the intermediate convex die surface (2-1) are connected via an arc transition convex die surface (2-3), the arc transition convex die surface (2-3) being adapted to the arc transition connection (1-3) between the arc-shaped intermediate main body plate (1-1) and the two side connecting plates (1-2) of the expansion joint splicing section (1), The die surface of the upper part of the lower die (3) comprises an intermediate die surface (3-1), the intermediate die surface (3-1) being an arcuate concave structure adapted to the X-direction arc and the Y-direction arc of the arc-shaped intermediate main body plate (1-1) of the expansion joint splicing section (1); two side die surfaces (3-2) are provided on both sides of the intermediate die surface (3-1), the two side die surfaces (3-2) being an arcuate concave structure adapted to the X-direction arc of the two side connecting plates (1-2) of the expansion joint splicing section (1); the two side die surfaces (3-2) and the intermediate die surface (3-1) are connected via an arc transition die surface (3-3), the arc transition die surface (3-3) being adapted to the arc transition connection (1-3) between the arc-shaped intermediate main body plate (1-1) and the two side connecting plates (1-2) on the expansion joint splicing section (1).

3. The manufacturing mold for expansion joints for power plant chimneys according to claim 1 is characterized in that: Upper die connection fixing grooves (2-4) are provided on both sides of the upper die (2), and lower die connection fixing grooves (3-4) are provided on both sides of the lower die (3).

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