Metering device for hydroformylation

Abstract

This utility model belongs to the field of chemical metering equipment, and proposes a metering device for hydroformylation, including a Coriolis flowmeter. The Coriolis flowmeter has connecting flanges and shoulders at both ends. Each connecting flange has an elongated structure, which includes a connecting plate, a connecting column, and a blind hole. The blind hole and flange hole are used to weld and form the connecting column. The connecting plates are welded and fixed to each other at their edges. A mounting tube is provided on the side of the connecting plate facing away from the connecting flange. One end of the mounting tube is nested with the shoulder. A mounting flange is provided on the side of the mounting tube near its other end. The mounting flange is used to connect to a metal bellows compensator by bolts. The end of the mounting tube has an annular groove for installing the metal bellows compensator. This utility model has a reasonable design, utilizes an elongated structure to extend both ends of the Coriolis flowmeter, facilitates the installation of the metal bellows compensator, and improves detection performance, making it suitable for large-scale promotion.

Description

Technical Field

[0001] This utility model belongs to the field of chemical metering equipment, and in particular relates to a metering device for hydroformylation. Background Technology

[0002] Hydroformylation, also known as carbonyl synthesis, refers to the process by which olefins react with carbon monoxide and hydrogen in the presence of a catalyst to produce aldehydes, which have one more carbon atom than the feed olefins. Hydroformylation is a key process in the production of aldehyde compounds. In the hydroformylation process, pipeline flow meters or electronic balances are generally used to measure some of the raw materials. For hydroformylation workshops with high precision requirements, Coriolis flow meters are used, which measure mass flow rate by utilizing the Coriolis force generated when fluid flows through a vibrating pipeline.

[0003] Because the flow stability at the inlet and outlet of a Coriolis flowmeter significantly affects its measurement accuracy, flexible connections, such as adding metal bellows compensators, are typically used to eliminate pipeline installation errors. However, the distance from the flanges at both ends of the Coriolis flowmeter to the end of its internal flow tube is relatively short. Directly installing a metal bellows compensator would not allow the metal bellows to fully exert its compensating effect. Appropriately lengthening the distance between the metal bellows and the internal flow tube of the Coriolis flowmeter can improve the actual detection performance of the Coriolis flowmeter. Utility Model Content

[0004] This invention addresses the technical problems of the aforementioned Coriolis flowmeter by proposing a hydroformylation metering device with a reasonable design, extended ends, easy installation of metal bellows compensators, and improved detection performance.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The metering device for hydroformylation provided by this utility model includes a Coriolis flow meter. Both ends of the Coriolis flow meter are provided with connecting flanges. A shoulder is provided at the center of each connecting flange. Each connecting flange is provided with an elongated structure, which includes a connecting plate. The connecting plate is provided with three connecting posts that nest with the flange holes of the connecting flange, and three blind holes corresponding to the flange holes. Welding posts are formed in the blind holes and flange holes. The connecting plate is welded and fixed to the edge of the connecting plate. An installation tube is provided on the side of the connecting plate facing away from the connecting flange. One end of the installation tube nests with the shoulder. An installation flange is provided on the side of the installation tube near its other end. The installation flange is used to connect to a metal corrugated compensator by bolts. An annular groove for installing the metal corrugated compensator is provided at the end of the installation tube.

[0006] Preferably, the mating plate has a bevel for welding on its end face edge facing the mating flange, and a reinforcing plate for installation welding is provided on the side of the mating plate facing away from the mating flange.

[0007] Preferably, the end of the mating plate is provided with a positioning ring, which engages with a positioning ring groove provided on the end face of the mating flange.

[0008] Preferably, the mounting tube has an inner shoulder, and a sealing ring is provided in the inner shoulder to nest and cooperate with the protruding shoulder. The cross-section of the sealing ring is rectangular.

[0009] Preferably, the outer edge of the end of the mounting tube is provided with three evenly distributed positioning ports.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] The hydroformylation metering device provided by this utility model, by welding elongated structures to both ends of the Coriolis flowmeter, can increase the distance between the metal bellows compensator and the end of the internal flow tube of the Coriolis flowmeter, and provides an annular groove for easy installation of the metal bellows compensator, which helps the metal bellows compensator to fully exert its compensation function and improves the measurement reliability of the Coriolis flowmeter. This utility model is reasonably designed, utilizes elongated structures to lengthen both ends of the Coriolis flowmeter, facilitates the installation of the metal bellows compensator, and improves detection performance, making it suitable for large-scale promotion. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A perspective view of the metering device for hydroformylation provided in the embodiment;

[0014] Figure 2 A front view of the metering device for hydroformylation provided in the embodiment;

[0015] Figure 3 An exploded view of the Coriolis flow meter and its extended structure provided for an embodiment;

[0016] Figure 4 A perspective view of the extended structure provided for the embodiment;

[0017] Figure 5 for Figure 2 A cross-sectional view of the metering device for hydroformylation along the AA direction;

[0018] In the above figures: 1. Coriolis flow meter; 11. Connecting flange; 12. Shoulder; 13. Locating ring groove; 2. Extended structure; 21. Connecting plate; 22. Connecting column; 23. Blind hole; 24. Mounting pipe; 25. Mounting flange; 26. Annular groove; 27. Bevel; 28. Locating ring; 29. ​​Inner shoulder; 210. Sealing ring; 211. Locating port; 212. Reinforcing plate. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Examples, such as Figures 1-5 As shown, the metering device for hydroformylation provided by this utility model includes a Coriolis flow meter 1. The Coriolis flow meter 1 has connecting flanges 11 at both ends, and a shoulder 12 is provided at the center of the connecting flanges 11. The connecting flanges 11 are six-hole flanges. The Coriolis flow meter 1 is existing technology and will not be described further in this embodiment. Based on this, the connecting flange 11 provided by this utility model is provided with an extended structure 2. The extended structure 2 includes a connecting plate 21. The connecting plate 21 is provided with three connecting posts 22 that are nested with the flange holes of the connecting flange 11 and three blind holes 23 corresponding to the flange holes. The blind holes 23 and the flange holes are used to weld and form welding posts. The connecting plates 21 are welded and fixed to each other. The connecting plate 21 is provided with an installation tube 24 on the side facing away from the connecting flange 11. One end of the installation tube 24 is nested with the shoulder 12. The installation tube 24 is provided with an installation flange 25 on its side and near its other end. The installation flange 25 is used to connect with the metal corrugated compensator by bolts. The end of the installation tube 24 is provided with an annular groove 26 for installing the metal corrugated compensator.

[0022] Specifically, by welding an elongation structure 2 to both ends of the Coriolis flowmeter 1, this utility model can lengthen the distance between the metal bellows compensator and the end of the internal flow tube of the Coriolis flowmeter 1, and provides an annular groove 26 for easy installation of the metal bellows compensator, which is conducive to the metal bellows compensator fully exerting its compensation function and improving the measurement reliability of the Coriolis flowmeter 1.

[0023] More specifically, the connecting columns 22 of the extended structure 2 are connected to three flange holes of the connecting flange 11. Three welding columns are welded from the blind hole 23 to the other flange holes, increasing the welding depth and direction between the extended structure 2 and the connecting flange 11. Furthermore, the welding of the connecting plate 21 to the edge of the connecting flange 11 forms a welded band, effectively improving the integration of the extended structure 2 and the Coriolis flowmeter 1, avoiding significant installation errors, and improving the uniformity of water flow. The extended structure 2, through its annular groove 26 at its end, can nest with the end ring structure of the metal bellows compensator. The metal bellows compensator is connected to the mounting flange 25 via bolts, providing an effective installation foundation for the metal bellows compensator. This improves the compatibility between the equipment and the metal bellows compensator and extends the distance between the metal bellows compensator and the end of the internal flow tube of the Coriolis flowmeter 1 to a certain range, improving the detection performance of the Coriolis flowmeter 1 and thus ensuring the production efficiency of the hydroformylation process.

[0024] To improve the integration of the extended structure 2 and the Coriolis flow meter 1, this invention provides a bevel 27 for welding on the edge of the end face of the connecting plate 21 facing the connecting flange 11. The angle area formed by the bevel 27 and the connecting flange 11 allows the weld material to form a weld strip of a certain thickness and diameter, which is beneficial to improving the welding quality of the extended structure 2 and the Coriolis flow meter 1 at the welding section. At the same time, this invention provides a reinforcing plate 212 for installation welding on the side of the connecting plate 21 facing away from the connecting flange 11. The reinforcing plate 212 is used to further improve the structural strength of the extended structure 2 between the connecting plate 21 and the mounting pipe 24.

[0025] Furthermore, this utility model provides a positioning ring 28 at the end of the docking plate 21. The positioning ring cooperates with the positioning ring groove 13 on the end face of the docking flange 11. Before welding the extended structure 2 to the Coriolis flowmeter 1, the positioning ring 28 and the positioning ring groove 13 can be used to achieve centering, and then the docking column 22 can be used to achieve positioning. This is beneficial to improving the coaxiality of the docking plate 21 and the Coriolis flowmeter 1, and is beneficial to ensuring the quality of the product after welding, so that this equipment meets the process requirements of the hydroformylation workshop.

[0026] To improve the sealing performance between the extended structure 2 and the connecting flange 11, this invention provides an inner shoulder 29 inside the mounting pipe 24. A sealing ring 210, which nests within the inner shoulder 29 to mate with the protruding shoulder 12, is provided. The sealing ring 210 has a rectangular cross-section and is made of a highly wear-resistant and corrosion-resistant material. This ensures good sealing performance between the extended structure 2 and the connecting flange 11 at the inner ring position of the connecting section, preventing the liquid inside the pipe from affecting the quality of the welded section. It also helps ensure the uniformity of fluid flow through the extended structure 2 and the connecting flange 11.

[0027] To improve the installation performance of the corrugated metal compensator and the extended structure 2, the installation tube 24 provided by this utility model has three evenly distributed positioning ports 211 on the outer edge of its end. The positioning ports 211 serve as an installation reference point, providing a standard installation reference node, and can also cooperate with the corrugated metal compensator with its inner protrusion, which helps to improve the efficiency of on-site installation of the corrugated metal compensator.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A metering device for hydroformylation, comprising a Coriolis flow meter, wherein the Coriolis flow meter has connecting flanges at both ends, and the connecting flanges have a shoulder at their center, characterized in that, Each of the connecting flanges is provided with an extension structure, which includes a connecting plate. The connecting plate has three connecting posts that nest with the flange holes of the connecting flange and three blind holes corresponding to the flange holes. The blind holes and flange holes are used to weld and form welding posts. The connecting plates are welded and fixed to each other at their edges. The connecting plate has an installation tube on the side facing away from the connecting flange. One end of the installation tube is nested with a shoulder. An installation flange is provided on the side of the installation tube near its other end. The installation flange is used to connect to a metal corrugated compensator by bolts. The end of the installation tube has an annular groove for installing the metal corrugated compensator.

2. The metering device for hydroformylation according to claim 1, characterized in that, The mating plate has a bevel for welding on its end face edge facing the mating flange, and a reinforcing plate for installation and welding is provided on the side of the mating plate facing away from the mating flange.

3. The metering device for hydroformylation according to claim 2, characterized in that, The end of the docking plate is provided with a positioning ring, which engages with a positioning ring groove provided on the end face of the docking flange.

4. The metering device for hydroformylation according to claim 3, characterized in that, The mounting tube has an inner shoulder, and a sealing ring is provided in the inner shoulder to nest and cooperate with the protruding shoulder. The cross-section of the sealing ring is rectangular.

5. The metering device for hydroformylation according to claim 4, characterized in that, The outer edge of the end of the mounting tube is provided with three evenly distributed positioning ports.

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