Assembling and welding tool for grating plate of high-pressure condenser

Abstract

The utility model provides an assembling and welding tool for a grating plate of a high-pressure condenser. The assembling and welding tool comprises a round hole plate, positioning rods, spring pressing pieces and screws. A plurality of round holes are formed in the round hole plate, the round holes are machined according to the actual arrangement of the heat exchange tubes, and the center of each round hole of the round hole plate corresponds to the center of each heat exchange tube; each worker corresponds to one positioning rod, the part, vertically extending out of the circular hole plate, of each positioning rod is a contact part of the grid batten, a spring pressing sheet is fixed at the contact position of the contact part and the grid batten through a screw, and a gap between the spring pressing sheet and the outer wall of the contact part of each positioning rod is a gap through which the grid batten penetrates; according to the technical scheme, the problems that in the prior art, when a grating manufacturing method adopts a manual lineation positioning mode, the manufacturing precision is low, and the efficiency is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure condensers, and in particular to an assembly welding tool for a grid, a core component of a high-pressure condenser. Background Art

[0002] The high-pressure condenser is the core equipment among the four major parts of the pressure vessel for the key product urea. The grille is the key component of the equipment. Hundreds or even thousands of heat exchange tubes are arranged in each device, and each heat exchange tube needs to pass through several layers of grilles. Whether the grille manufacturing dimensional accuracy meets the requirements will directly affect the installation of the heat exchange tube bundle. In order to avoid scratches on the surface of the heat exchange tube or even the inability to insert the tube due to excessive grille size, the control of grille dimensional accuracy is crucial.

[0003] The traditional grille manufacturing method relies on manual marking and positioning. This method is greatly affected by internal and external factors such as the physical condition, mental state and professional ability of the personnel. It is easy to deform after welding and the manufacturing accuracy is difficult to guarantee. In addition, each device has multiple layers of grilles, and the slats of each layer are staggered. Manual positioning alone is extremely inefficient and easily causes size differences between different layers of grilles, making it difficult to install the heat exchange tube bundle. Summary of the Invention

[0004] In response to the technical problems raised above, a high-pressure condenser grid plate welding tool is provided which can effectively ensure the accuracy.

[0005] The technical means adopted by this utility model are as follows:

[0006] A high-pressure condenser grid plate welding tool, comprising:

[0007] Circular hole plate, positioning rod, spring pressing piece and screw;

[0008] The circular hole plate is processed with a plurality of circular holes, and the circular holes are processed according to the actual arrangement of the heat exchange tubes. The center of each circular hole of the circular hole plate corresponds to the center of the heat exchange tube;

[0009] Each employee corresponds to a positioning stick.

[0010] The positioning rod is a variable diameter cylinder, one end of which is inserted into the circular hole of the circular hole plate, and is transitionally matched with the circular hole with an allowable clearance error;

[0011] The positioning rod extends vertically from the circular hole plate portion to form a contact portion with the grid slats, and a threaded hole for screw assembly is provided at a preset contact position with the grid slats on the contact portion;

[0012] The spring pressing piece is fixed to the positioning rod by screws, and the gap between the spring pressing piece and the outer wall of the contact part of the positioning rod is the gap through which the grid strips pass;

[0013] The contact portion of each positioning rod is provided with four preset threaded holes, and the position and quantity of the spring pressing pieces are selected according to actual needs.

[0014] Further,

[0015] The positioning rod is a cylinder with an upper diameter larger than a lower diameter. The lower cylinder with a smaller diameter is embedded in the circular hole of the circular hole plate, and the upper part with a larger diameter extends out of the circular hole plate as a contact part.

[0016] Further,

[0017] The spring pressing piece is an elastic metal sheet, which pre-tightens the grid slats by the elasticity of the metal sheet itself.

[0018] Further,

[0019] The bottom of the spring pressure plate is bent inward and the bent part can fit tightly with the surface of the positioning rod to form a buckle, thereby limiting the lower edge of the grille slats. That is, the inward bent part of the spring pressure plate can prevent movement in the axial direction of the positioning rod, further ensuring the stable positioning of the grille slats.

[0020] Further,

[0021] A protrusion is provided at the end of the bent portion at the bottom of the spring pressing piece;

[0022] A groove that cooperates with its protrusion is provided at the contact position between the positioning rod and the bent part at the bottom of the spring pressing plate, and the center of the groove and the center of the side threaded hole are on the same straight line extending in the axial direction. This structure facilitates the precise installation of the spring pressing plate.

[0023] The utility model adopts the above technical solution, inserts a positioning rod into the circular hole of each circular hole plate, and then presets which side surfaces of each positioning rod are in contact with the grille slats, and the simulation calculation results can know the angle of each contact position, and then presets the threaded holes, and installs spring pressure plates at the determined contact positions. The screws are not tightened before the grille slats are inserted. After the grille slats are inserted, the screws in contact with the grille slats are gradually tightened, and finally the precise positioning of the grille slats is achieved.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] 1. Solve the problem of low manufacturing accuracy and low efficiency when the traditional grille manufacturing method uses manual marking and positioning.

[0026] 2. This tooling can process components with high precision, ultimately achieving the production of high-precision grilles.

[0027] 3. The structural combination is simple and reliable, easy to assemble and disassemble, and has very high practical value.

[0028] 4. It can greatly improve the grid accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 This is the front view of the circular hole plate of the utility model.

[0031] Figure 2 This is a schematic diagram of the positioning rod structure of the utility model.

[0032] Figure 3 This is a structural diagram of the utility model after the spring pressing piece is assembled and inserted into the grille slats.

[0033] Figure 4 Schematic diagram of the steps for arranging the grille slats.

[0034] In the figure: 1. Circular hole plate; 2. Positioning rod; 3. Spring pressure piece; 4. Screw; 5. Grille slats. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0039] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0040] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0041] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0042] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the utility model provides a high-pressure condenser grid plate welding tool, comprising:

[0043] Circular hole plate 1, positioning rod 2, spring pressing piece 3 and screw 4;

[0044] The circular hole plate 1 is processed with a plurality of circular holes, and the circular holes are processed according to the actual arrangement of the heat exchange tubes. The center of each circular hole of the circular hole plate corresponds to the center of the heat exchange tube;

[0045] Each employee corresponds to a positioning stick 2,

[0046] The positioning rod 2 is a cylindrical body with a variable diameter, and one end of the positioning rod is inserted into the circular hole of the circular hole plate 1, and is matched with the circular hole with an allowable clearance error.

[0047] The positioning rod 2 extends vertically from the circular hole plate 1 to form a contact portion with the grid slats 5. The contact portion is provided with a threaded hole for assembling the screw 4 at a predetermined contact position with the grid slats 5.

[0048] The spring pressing piece 3 is fixed to the positioning rod 2 by screws 4, and the gap between the outer wall of the contact part of the spring pressing piece 3 and the positioning rod 2 is the gap through which the grid strips 5 pass;

[0049] The contact portion of each positioning rod 2 is provided with four preset threaded holes, and the position and quantity of the spring pressing pieces 3 are selected according to actual needs.

[0050] Further,

[0051] The positioning rod 2 is a cylinder with an upper diameter larger than a lower diameter. The lower cylindrical portion with a smaller diameter is embedded in the circular hole of the circular hole plate 1, and the upper portion with a larger diameter extends out of the circular hole plate 1 as a contact portion.

[0052] Further,

[0053] The spring pressing piece 3 is an elastic metal sheet, which pre-tightens the grid slats 5 by the elasticity of the metal sheet itself.

[0054] Further,

[0055] The bottom of the above-mentioned spring pressing plate 3 is bent inward and the bent part can fit tightly with the surface of the positioning rod 2 to form a buckle, thereby limiting the lower edge of the grille slat 5, that is, the inward bent part of the spring pressing plate 3 can block the movement in the axial direction of the positioning rod 2, further ensuring the stable positioning of the grille slat 5.

[0056] Further,

[0057] The end of the bent portion at the bottom of the spring pressing piece 3 is provided with a protrusion;

[0058] A groove that cooperates with its protrusion is provided at the contact position between the positioning rod 2 and the bottom bent part of the spring pressing plate 3, and the center of the groove and the center of the side threaded hole are on the same straight line extending in the axial direction. This structure facilitates the precise installation of the spring pressing plate 3.

[0059] The utility model adopts the above technical solution, and a positioning rod 2 is inserted into the circular hole of each circular hole plate 1. Then, it is known by preset which sides of each positioning rod 2 are in contact with the grille slats 5, and the simulation calculation results can know the angle of each contact position, and then the threaded holes are preset and processed, and the spring pressure pieces 3 are installed at the determined contact positions. The screws 4 are not tightened before the grille slats 5 are inserted. After the grille slats 5 are inserted, the screws 4 in contact with the grille slats 5 are gradually tightened, and finally the precise positioning of the grille slats 5 is achieved. All the grille slats 5 are limited and then welded and fixed. After welding is completed, all screws 4 and spring pressure pieces 3 are removed first, and then the positioning rods 2 are pulled out, and the circular hole plate 1 is naturally separated from the welded grille.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-pressure condenser grid plate welding tool, characterized in that: include: Circular hole plate (1), positioning rod (2), spring pressing piece (3) and screw (4); The circular hole plate (1) is processed with a plurality of circular holes, and the circular holes are processed according to the actual arrangement of the heat exchange tubes, and the center of each circular hole of the circular hole plate corresponds to the center of the heat exchange tube; Each employee corresponds to a positioning stick (2), The positioning rod (2) is a variable diameter cylinder, and one end of the positioning rod is inserted into the circular hole of the circular hole plate (1), and is matched with the circular hole with an allowable clearance error; The positioning rod (2) extends vertically out of the circular hole plate (1) to form a contact portion with the grid strip (5), and a threaded hole for assembling a screw (4) is provided at a predetermined contact position with the grid strip (5); The spring pressing piece (3) is fixed to the positioning rod (2) by means of screws (4), and the gap between the outer wall of the contact portion between the spring pressing piece (3) and the positioning rod (2) is a gap through which the grid strips (5) pass; The contact portion of each positioning rod (2) is provided with four preset threaded holes, and the position and number of the spring pressing pieces (3) are selected according to actual needs.

2. The high-pressure condenser grid plate assembly welding tool according to claim 1, characterized in that: The positioning rod (2) is a cylinder with an upper diameter larger than a lower diameter. The lower cylinder portion with a smaller diameter is embedded in the circular hole of the circular hole plate (1), and the upper portion with a larger diameter extends out of the circular hole plate (1) as a contact portion.

3. The high-pressure condenser grid plate assembly welding tool according to claim 2, characterized in that: The spring pressing piece (3) is an elastic metal piece.

4. A high-pressure condenser grid plate assembly welding tool according to claim 2 or 3, characterized in that: The bottom of the spring pressing piece (3) is bent inwards and the bent portion can be closely fitted with the surface of the positioning rod (2) to form a buckle, thereby limiting the lower edge of the grid slat (5), that is, the inward bent portion of the spring pressing piece (3) can prevent movement in the axial direction of the positioning rod (2).

5. The high-pressure condenser grid plate assembly welding tool according to claim 4, characterized in that: The end of the bent portion at the bottom of the spring pressing piece (3) is provided with a protrusion; A groove matching the protrusion is provided at the contact position between the positioning rod (2) and the bottom bent portion of the spring pressing plate (3), and the center of the groove and the center of the side threaded hole are on a straight line extending in the same axial direction.

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