CN205036680U - Empty staple bolt structure of dividing interior low temperature container of cold box - Google Patents

Abstract

A hoop structure for a low-temperature container in an air separation cold box, which includes a low-temperature container installed in the cold box and two semicircular hoops surrounding the outer wall of the cryogenic container, the inner sides of the semicircular hoops are uniformly fixed with rivets There are a plurality of tetrafluoroethylene liners, and the two semicircular hoops are close to the outer wall of the cryogenic container through the tetrafluoroethylene liners to fasten the cryogenic container in the cold box; the two semicircular hoops At least one outer surface of the hoop is connected to the cold box through a bracket composed of at least two diagonal braces; the two semicircular hoops are connected to each other by bolts, nuts and gaskets through their respective two connecting edges or connecting flanges It has a circular hoop structure; it has the characteristics of simple structure, convenient use and installation, and can avoid the problem that the gasket cannot be fixed and is easy to fall off when there is a gap between the hoop and the container due to cold shrinkage at low temperature.

Description

A hoop structure for cryogenic containers in air separation cold boxes

technical field

The utility model relates to a hoop structure for a low-temperature container unit in an air separation cold box, which is mainly used for transportation and fixing of the low-temperature container in the air separation cold box and position correction during use, and belongs to the technical field of container reinforcement.

Background technique

There are many unit containers in the air separation cold box, and each container is connected by pipelines to form a complete functional module. Due to the weight of some containers or the vibration during transportation, the unit equipment needs to be fixed in an appropriate way. At the same time, during the operation of the equipment, the equipment will gradually turn from normal temperature to low temperature state, the unit container will shrink, and the pipeline will also produce damage to the container. Stress, it is necessary to use external force to straighten the container. In order to prevent the displacement and deformation of the unit container, a large number of container hoops are used in the design; the main function of the hoop is to support the weight of the container and the pipeline connected to it during transportation, so as to ensure that the container does not deform or shift; The second is that in the low temperature state, both the pipe and the container will generate low temperature shrinkage stress, so as to prevent the verticality of the container from being affected under the influence of low temperature stress. In the previous design, in order to avoid direct friction and extrusion between the hoop and the container, a whole piece of polytetrafluoroethylene gasket was installed between the hoop and the container. Since the hoop and the container are made of two different materials, the cold shrinkage coefficients of the two are different, and the hoop tightened at room temperature will have a gap at low temperature, and the gasket is easy to fall off.

Invention content:

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a simple structure, easy to use and install, which can avoid the problem that the gasket cannot be fixed and is easy to fall off when there is a gap between the hoop and the container due to cold shrinkage at low temperature. The hoop structure of the cryogenic container in the air separation cold box.

The purpose of this utility model is accomplished through the following technical scheme, a hoop structure for cryogenic containers in an air separation cold box, which includes a low-temperature container installed in the cold box, and two semicircles surrounding the outer wall of the low-temperature container As for the hoop, the inner surface of the semicircular hoop is evenly fixed with rivets with a plurality of tetrafluoroethylene gaskets, and the two semicircular hoops are closely attached to the outer wall of the cryogenic container through the tetrafluoroethylene gasket to secure the cryogenic container Secure in cold box.

As a preference: at least one of the outer sides of the two semicircular hoops is connected to the cold box through a bracket composed of at least two diagonal braces; the two semicircular hoops are connected by two connecting edges or connection methods The flanges are connected to each other with bolts, nuts and gaskets to form a circular hoop structure.

The utility model belongs to the improvement of the prior art. It has the characteristics of simple structure, convenient use and installation, and can avoid the problem that the gasket cannot be fixed and is easy to fall off when there is a gap between the hoop and the container due to cold shrinkage at low temperature.

Description of drawings

Fig. 1 is a structural representation of the utility model.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings: as shown in Fig. 1, the hoop structure of the low-temperature container in a kind of air separation cold box described in the utility model, it comprises the low-temperature container installed in the cold box, and Two semicircular hoops 1 surrounding the outer wall of the cryogenic container, the inner surface of the semicircular hoops 1 are uniformly fixed with rivets 3 with a plurality of tetrafluoroethylene gaskets 2, and the two semicircular hoops 1 pass through the four The vinyl fluoride liner 2 is close to the outer wall of the low-temperature container to fasten the low-temperature container in the cold box.

As shown in the figure, at least one of the outer sides of the two semicircular hoops 1 described in the present invention is connected to the cold box through a bracket composed of at least two diagonal braces 7; the two semicircular hoops 1 The two connecting sides or connecting flanges are connected with each other by bolts 4, nuts 5 and gaskets 6 to form a circular hoop structure.

Example:

First of all, according to the size of the cryogenic container, several pieces of tetrafluoroethylene gaskets 2 are fixed on the semicircular hoop 1 through rivets 3. Generally, the size of the gaskets is not less than 130×40×4 (mm), and the rivets 3 must not protrude from the gaskets. 2 surfaces. Two semicircular hoops 1 are surrounded on the outer wall of the container, connected by bolts, nuts and washers, and fastened. Then connect with the cold box 8 through the diagonal brace 7, so that the hoop plays a load-bearing and guiding role.

Claims (2)

1. A hoop structure for a low-temperature container in an air separation cold box, which includes a low-temperature container installed in the cold box and two semicircular hoops that surround the outer wall of the cryogenic container, and is characterized in that the semicircular hoop A plurality of tetrafluoroethylene gaskets are uniformly fixed on the sides with rivets, and the two semicircular hoops are tightly attached to the outer wall of the cryogenic container through the tetrafluoroethylene gaskets to fasten the cryogenic container in the cold box. 2. The hoop structure of the low-temperature container in the air separation cold box according to claim 1, wherein at least one of the outer sides of the two semicircular hoops is connected by a bracket composed of at least two diagonal braces On the cold box: the two semicircular hoops are connected to each other by bolts, nuts and washers to form a circular hoop structure through respective two connecting sides or connecting flanges.