Composite multilayer blind plate convenient to disassemble and assemble quickly

Abstract

The utility model discloses a composite multi-layer blind plate convenient to disassemble and assemble quickly, which comprises a first flange and a second flange which can be installed in a butt joint mode, and further comprises a blind plate capable of being connected between the first flange and the second flange, and the blind plate comprises a first-layer blind plate, a second-layer blind plate and a middle-layer blind plate. The first-layer blind plate and the second-layer blind plate can be connected and plugged on the first flange and the second flange respectively, the middle-layer blind plate can be installed between the first-layer blind plate and the second-layer blind plate, and the problem that production or the construction period is affected due to the fact that no blind plate with the appropriate thickness exists on the high-pressure and large-diameter occasion can be solved. The problem that the blind plate is difficult to disassemble and assemble can be solved; the problem of carrying large blind plates can be solved.

Description

Technical Field

[0001] The utility model relates to a blind plate, more specifically, to a composite multi-layer blind plate which is convenient for quick disassembly and assembly, and belongs to the field of petrochemical industry. Background Art

[0002] The blind plates currently used are all pre-processed after the thickness is calculated through design, or the finished blind plates are directly used after selection. In the case of high pressure, large diameter or actual site, if there is no blind plate that meets the requirements, it is necessary to re-purchase or re-process, which may take a long time or be costly. In addition, during the installation and removal of the blind plate, a certain distance between the two flanges is required. For example, for RJ face flanges, special tools are required to increase the flange spacing to facilitate the installation or removal of the blind plate. If the flange face spacing on site is limited, it will be more difficult to disassemble and install. For high pressure and large diameter blind plates, they are heavy and generally cannot be moved manually. Lifting tools are required. Therefore, in the case of large pipe diameter and high pressure, the blind plate is very thick and the cost is high. Especially when the process requires the use of special materials, the cost is even higher, and the installation and removal are inconvenient. Utility Model Content

[0003] In order to solve the above-mentioned problems of the prior art, the utility model provides a composite multi-layer blind plate which is suitable for flange sealing in occasions with large pipe diameter and high pressure, and is easy to install and transport.

[0004] In order to achieve the above purpose, the utility model is implemented by the following technical solutions:

[0005] A composite multi-layer blind plate that is easy to disassemble and assemble quickly includes a No. 1 flange and a No. 2 flange that can be butt-mounted, and also includes a blind plate that can be connected between the No. 1 flange and the No. 2 flange. The blind plate includes a first layer of blind plates, a second layer of blind plates, and an intermediate layer of blind plates. The first layer of blind plates and the second layer of blind plates can be connected and sealed on the No. 1 flange and the No. 2 flange respectively, and the intermediate layer of blind plates can be installed between the first layer of blind plates and the second layer of blind plates.

[0006] Preferably, latches are provided between the first layer of blind plates and the middle layer of blind plates, as well as between the second layer of blind plates and the middle layer of blind plates for assembly and positioning.

[0007] Preferably, the first layer blind plate, the second layer blind plate and the middle layer blind plate are all recessed with grooves, and the latches are inserted into the grooves.

[0008] Preferably, the intermediate layer blind plate includes a plurality of independent sub-intermediate layer blind plates.

[0009] Preferably, the sub-middle layer blind plate is sunken with a groove, and adjacent sub-middle layer blind plates are positioned and spliced ​​in the groove by means of latches.

[0010] Beneficial effects: It can solve the problem of not having blind plates of suitable thickness in high-pressure and large-diameter situations, which affects production or construction period; it can solve the problem of difficulty in disassembling and assembling blind plates; it can solve the problem of transporting large blind plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0012] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0013] like Figure 1 The figure shows a specific embodiment of a composite multi-layer blind plate that is easy to quickly disassemble and assemble. The embodiment is a composite multi-layer blind plate that is easy to quickly disassemble and assemble, including a No. 1 flange 1 and a No. 2 flange 2 that can be butt-mounted, and also includes a blind plate that can be connected between the No. 1 flange 1 and the No. 2 flange 2. The blind plate includes a first layer of blind plates 3, a second layer of blind plates 4, and an intermediate layer of blind plates 5. The first layer of blind plates 3, the second layer of blind plates 4, and the intermediate layer of blind plates 5 have the same diameters. The first layer of blind plates 3 and the second layer of blind plates 4 can be connected and sealed on the No. 1 flange 1 and the No. 2 flange 2, respectively, and the intermediate layer of blind plates 5 can be installed between the first layer of blind plates 3 and the second layer of blind plates 4.

[0014] In high-pressure occasions, when the thickness of the blind plate on site is not enough, the first layer of blind plate 3, the second layer of blind plate 4, and the middle layer of blind plate 5 can be used in combination with layer-by-layer iterative calculation to ensure that the stacking thickness meets the calculated thickness and strength requirements. The thickness and strength requirements can be calculated according to actual needs, which is not a necessary technical feature of this application. When the spacing between flange No. 1 and flange No. 2 is small, the middle layer of blind plate 5 can be thin or can be composed of several thin blind plates. First install the first layer of blind plate 3 and the second layer of blind plate 4 with sealing surfaces on flange No. 1 and flange No. 2, and then install the middle layer of blind plate 5. This can effectively avoid the difficulty of disassembling RJ face flanges or concave and convex face flanges. When removing the blind plate, first remove the middle layer of blind plate 5, and then remove the first layer of blind plate 3 and the second layer of blind plate 4 on both sides. In the existing technology, large and heavy blind plates were originally impossible to be manually transported and installed. By using several layers of blind plates stacked, each blind plate can be installed manually or with simple tools, saving lifting costs. The middle layer blind plate 5 includes a plurality of independent sub-middle layer blind plates, so that the design can be flexible to meet the needs of the No. 1 flange 1 and the No. 2 flange 2 with a small spacing.

[0015] In special occasions, the first layer of blind plate 3 and the second layer of blind plate 4 in contact with the medium can be made of materials that meet the process requirements (such as corrosion resistance and wear resistance). The materials of the first layer of blind plate 3 and the second layer of blind plate 4 can be selected according to actual conditions, and the middle layer of blind plate 5 can directly use lower-cost materials while meeting the temperature and pressure requirements, which reduces costs and facilitates processing.

[0016] In practice, during the maintenance of high-pressure devices, the DN400 and CL2500 high-pressure blind plates, which were originally planned to be installed in 8 hours, were installed in less than 4 hours after using the technical solution of this application, and no crane was used. The technical solution of this application is applicable to flange blind plates with diameters of DN50-DN2500 and pressures of CL150-CL2500, or any specifications of blind plates with larger diameters, higher pressures, and special material requirements. It can save manpower and material resources, reduce costs, and has a wide range of applications.

[0017] In a preferred embodiment, latches are provided between the first layer of blind plates 3 and the middle layer of blind plates 5, as well as between the second layer of blind plates 4 and the middle layer of blind plates 5 for assembly and positioning. The pre-positioning of the latches facilitates the final tightening and fixing of flange No. 1 1 and flange No. 2 2 by bolts.

[0018] In a preferred embodiment, the first layer blind plate 3, the second layer blind plate 4 and the middle layer blind plate 5 are all provided with grooves, and the latches are inserted into the grooves, which has a simple structure and strong practicality.

[0019] In a preferred embodiment, the middle layer blind plate 5 includes a plurality of independent sub-middle layer blind plates, which are easy to disassemble and flexible to set up, can adapt to different spacings, can realize flexible adjustment of weight, and are convenient for graded transportation.

[0020] In a preferred embodiment, the sub-middle layer blind plate is sunken with a groove, and adjacent sub-middle layer blind plates are positioned in the groove by means of latches for assembly, which has a simple structure and strong practicality.

[0021] Finally, it should be noted that the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by ordinary technicians in this field should be considered as the protection scope of the present invention.

Claims

1. A composite multi-layer blind plate that is easy to quickly disassemble and assemble, comprising a first flange (1) and a second flange (2) that can be butt-jointed and assembled, characterized in that: It also includes a blind plate that can be connected between the first flange (1) and the second flange (2), the blind plate comprising a first layer of blind plates (3), a second layer of blind plates (4), and an intermediate layer of blind plates (5), the first layer of blind plates (3) and the second layer of blind plates (4) can be connected to and sealed on the first flange (1) and the second flange (2), respectively, and the intermediate layer of blind plates (5) can be installed between the first layer of blind plates (3) and the second layer of blind plates (4); Pins are provided between the first layer blind plate (3) and the middle layer blind plate (5), as well as between the second layer blind plate (4) and the middle layer blind plate (5) for joint positioning; The first layer blind plate (3), the second layer blind plate (4) and the middle layer blind plate (5) are all provided with grooves, and the latch pins are inserted into the grooves.

2. The composite multi-layer blind plate that is easy to quickly disassemble and assemble according to claim 1 is characterized in that: The intermediate layer blind plate (5) comprises a plurality of independent sub-intermediate layer blind plates.

3. The composite multi-layer blind plate that is easy to quickly disassemble and assemble according to claim 2, characterized in that: The sub-middle layer blind plates are sunken with grooves, and adjacent sub-middle layer blind plates are positioned and spliced ​​in the grooves by means of latches.

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