CN204202439U - A kind of Novel single tube journey floating head heat exchanger - Google Patents

Abstract

The utility model provides a kind of Novel single tube journey floating head heat exchanger, belongs to floating head field of heat exchange.The tube side that described Novel single tube journey floating head heat exchanger comprises shell side and sets within it, described shell side comprises shell-side cylinder and outer skull; Described shell-side cylinder is columnar structured, and described outer skull comprises outer skull flange, cylindrical shell, end socket and the shell-side outlet adapter connected successively; Described shell-side cylinder is provided with shell flange, and described shell-side cylinder and the outside cup body are by shell flange and outer skull flange, with bolts; Described shell-side outlet adapter is welded with expansion joint; Described tube side is provided with tube side adapter, and the adapter of this tube side is stretched out in the cap seal head of described the outside, is positioned at shell-side outlet adapter.

Description

A New Single-pass Floating Head Heat Exchanger

technical field

The utility model belongs to the field of floating head heat exchange, in particular to a novel single tube pass floating head heat exchanger.

Background technique

The single-tube floating head heat exchanger effectively combines the advantages of the floating head heat exchanger and the fixed tube sheet heat exchanger. It is also suitable for the situation where the pressure drop is small, easy to scale and needs to be cleaned. In combination with the actual situation of the project, it is very important to choose an appropriate structural form.

However, the commonly used structural type is shown in Figure 1. In Fig. 1, 101 is a spherical head, 102 is an expansion joint, 103 is a clamping plate, 104 is a reverse flange, 105 is a pipe flange, and 106 is a flange. The structure of the tube box outlet of the floating head heat exchanger is widely used, but because these floating head connectors are all enclosed in the shell, installation and maintenance are inconvenient, and the expansion joint bears the pressure of the tube side and the shell side at the same time, and the pressure between 105 and 106 The sealing surface between the sealing surface and 103 and 104 needs to ensure the sealing at the same time, which requires high assembly, so there are often problems such as sealing leakage and inconvenient maintenance.

Utility model content

The purpose of this utility model is to solve the problems existing in the above-mentioned prior art, provide a new type of single-tube floating head heat exchanger, improve the structure of the outlet of the single-tube floating head heat exchanger, and make the single-tube floating head heat exchanger The structure is simpler, the sealing performance is more guaranteed, and the installation and maintenance are more convenient.

The utility model is achieved through the following technical solutions:

A novel single-tube floating head heat exchanger, comprising a shell side and a tube side arranged therein, the shell side including a shell side cylinder and an outer head cover;

The shell-side cylinder is a cylindrical structure, and the outer head cover includes an outer head cover flange, a cylinder body, a head and a shell-side outlet connecting pipe connected in sequence;

A cylinder flange is provided on the shell side cylinder body, and the shell side cylinder body and the outer head cover cylinder body are connected by bolts through the cylinder body flange and the outer head cover flange;

An expansion joint is welded on the shell-side outlet pipe;

The tube side is provided with a tube side connecting tube, and the tube side connecting tube protrudes from the head of the outer head cover and is located in the outlet connecting tube of the shell side.

The floating tube sheet of the tube side is welded to the short joint of the cylinder body, the short joint of the cylinder body is welded to the head, one end of the tube side is welded to the central opening of the head, and the other end is connected to the tube side connection method. Blue direct welding connection;

The short joint of the cylinder is a cylindrical structure, and its diameter is the same as that of the floating tube sheet and the diameter of the head.

The new single-tube floating head heat exchanger includes a clamping plate, which is a disc-shaped structure with a through hole in the middle, grooves are opened on the edges of its two end faces, and there are grooves on the clamping plate. screw hole;

The clamping plate is arranged at the junction of the tube side and the shell side, and the clamping plate and the tube side are connected to the tube side connecting flange through the screw holes by bolts;

The clamping plate and the shell side are connected through the matching flange of the shell side.

The shell-side matching flange includes a flange welded to the shell-side outlet nozzle and a flange welded to the reducer, both of which are located on both sides of the clamping plate and clamped on the clamping plate respectively grooves on both ends of the

The inner cavity of the reducer is communicated with the pipe-side connecting pipe through the through hole of the clamping plate.

Sealing gaskets are provided between the clamping plate and the flange of the pipe-side connecting pipe, the flange welded to the shell-side outlet connecting pipe, and the flange welded to the reducing pipe.

The floating tube sheet adopts an N-shaped tube sheet structure.

Compared with the prior art, the beneficial effects of the utility model are: the structure of the utility model saves materials, reduces leakage points, and reduces the diameter of the hole on the outer head cover, and the expansion joint is arranged at the outlet of the shell side On the connecting pipe, it is convenient for processing, manufacturing, installation and maintenance, and the expansion joint only bears the pressure of the shell side.

Description of drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a structural schematic diagram of the utility model.

Figure 3 is a partially enlarged view of the utility model.

FIG. 4 is a schematic structural diagram of the clamping plate 7 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

The utility model is achieved through the following technical solutions:

As shown in Figure 2, the utility model cancels the floating head flange and hook ring at the end of the floating tube plate, and arranges a connecting pipe on the head of the tube box and passes through the new structure of the shell. Floating tube sheet 1 adopts N-type tube sheet structure (N-type tube sheet is a type of tube sheet structure in GB151), and is directly welded and connected with cylinder sub-joint 2, which is a small section of cylindrical structure ( If the tube sheet and the head are directly welded, the stress will be large, and the connection through the short joint 2 of the cylinder will relieve the stress.), the short joint 2 of the cylinder and the spherical head 3 are directly welded and connected, and the flange is cancelled. Bolt connection, direct welding connection between the connecting pipe 4 and the head 3, reducing the sealing surface, and at the same time, setting the expansion joint 5 on the outlet connecting pipe of the shell side, that is, setting it outside the shell side for easy installation and maintenance. The connection between the pipe and the shell side adopts The new structural clamping plate 7 is connected to the flange 6 on the tube side by bolts, and is connected to the matching flanges 8 and 9 on the shell side by bolts on the shell side. It is convenient for installation and maintenance, and it is especially suitable for operating conditions with high temperature and pressure on the tube side and low pressure on the shell side.

The shell process in the utility model is divided into two parts, one part is the shell shell cylinder 10, and the other part is the outer head cover 13, which is more convenient to disassemble and clean the shell process. Wherein the shell side cylinder body 10 is a cylindrical structure, the outer head cover 13 includes an outer head cover flange 12, a cylinder body 13, a head 14 and a shell side outlet connecting pipe 15, and a cylinder body flange is provided on the end face of the shell side cylinder body 10 11. The shell-side cylinder 10 and the outer head cover 13 are connected by bolts through the flange 11 and the outer head cover flange 12 . The shell side outlet joint 15 connected with the head 14 is the shell side outlet.

As shown in Figure 3, a new structural clamping plate 7 is used for the connection between the tube and the shell side, and the connection between the clamping plate 7 and the shell side is clamped and connected by flanges 8 and 9. The connection between the clamping plate 7 and the tube side is through bolted connection with the flange 6 . The flange 8 and the flange 9 are matching flanges, which are used to connect the clamping plate 7 to realize the connection between the outlet of the tube side and the outlet of the shell side. Sealing gaskets are also arranged between the clamping plate and 6, 8, 9. Flange 8 is welded to the outlet pipe of the shell side, and flange 9 is welded to the reducer.

One end of the connecting pipe 4 is welded to the opening in the center of the head 3, and the other end is directly welded to the flange 6. The expansion joint 5 is set on the outlet connecting pipe of the shell side. The expansion joint is a common structure, but it is convenient to install it on the shell side. Installation and maintenance. Expansion joints are directly welded to the shell side outlet connection. This structure saves material, reduces leakage points, and reduces the diameter of the opening on the outer head cover (because the expansion joint is placed on the shell side outlet, if it is placed on the tube side outlet joint 4, the diameter of the shell side outlet joint 15 will inevitably increase .), the expansion joint is set on the outlet pipe of the shell side to facilitate installation and maintenance, and the expansion joint only bears the shell side pressure. This structure saves material, reduces the sealing surface, and the expansion joint is set on the outlet pipe of the shell side for easy installation and maintenance, and is especially suitable for working conditions with high pressure on the tube side and low pressure on the shell side.

The structure of clamping plate 7 is shown in Figure 4, is the disc-shaped structure of opening in the middle, has groove at disc edge place, is convenient to flange 8,9 clamping, has screw on clamping plate 7. Holes for connecting with flange 6 via bolts.

A shell-side inlet and a shell-side outlet are opened on the shell-side cylinder 10 . After the shell-side fluid enters from the shell-side inlet, it flows through the entire shell, returns from the clamping plate 7 , and finally flows out from the shell-side outlet. The tube side fluid flows in from the reducer, passes through the clamping plate 7 and the floating tube sheet 1 into the heat exchange tube, and finally flows out from the tube side outlet.

The above-mentioned technical solution is only an embodiment of the utility model. For those skilled in the art, on the basis of the principles disclosed in the utility model, it is easy to make various types of improvements or deformations, and is not limited to this utility model. The structures described in the above specific embodiments of the utility model are therefore only preferred and not limiting.

Claims (7)

1. A novel single-tube-side floating head heat exchanger, comprising a shell side and a tube side arranged therein, characterized in that: the shell side includes a shell-side cylinder and an outer head cover; The shell-side cylinder is a cylindrical structure, and the outer head cover includes an outer head cover flange, an outer head cover head and a shell-side outlet connecting pipe connected in sequence; A cylinder flange is provided on the shell side cylinder body, and the shell side cylinder body and the outer head cover cylinder body are connected by bolts through the cylinder body flange and the outer head cover flange; An expansion joint is welded on the shell-side outlet pipe; The tube side is provided with a tube side connecting tube, and the tube side connecting tube protrudes from the head of the outer head cover and is located in the outlet connecting tube of the shell side. 2. The novel single-tube-side floating head heat exchanger according to claim 1, characterized in that: the floating tube sheet of the tube side is welded to the cylinder nipple, and the cylinder nipple is welded to the head, and the One end of the pipe connection is welded to the central opening of the head, and the other end is directly welded to the flange of the pipe connection; The short joint of the cylinder is a cylindrical structure, and its diameter is the same as that of the floating tube sheet and the diameter of the head. 3. The novel single tube pass floating head heat exchanger according to claim 2, characterized in that: the novel single tube pass floating head heat exchanger comprises a clamping plate, which is a disc-shaped structure with a through hole in the middle, There are grooves on the edges of its two end faces, and screw holes are opened on the clamping plate; The clamping plate is arranged at the junction of the tube side and the shell side, and the clamping plate and the tube side are connected to the tube side connecting flange through the screw holes by bolts; The clamping plate and the shell side are connected through the matching flange of the shell side. 4. The novel single-tube-side floating head heat exchanger according to claim 3, characterized in that: the shell-side mating flange includes a flange welded to the shell-side outlet nozzle and a flange welded to the different-diameter pipe , the two are respectively located on both sides of the clamping plate, and are respectively clamped at the grooves on the two end faces of the clamping plate. 5 . The novel single-tube-side floating head heat exchanger according to claim 4 , wherein the inner chamber of the reducing tube communicates with the tube-side connection through the through hole of the clamping plate. 5 . 6. The novel single-tube-side floating head heat exchanger according to claim 5, characterized in that: the clamping plate and the tube-side connection flange, the flange welded to the shell-side outlet connection, and the reducer Gaskets are provided between the welded flanges. 7. The novel single-tube-pass floating head heat exchanger according to any one of claims 1 to 6, wherein the floating tube sheet adopts an N-shaped tube sheet structure.