A shell-and-tube condenser

Abstract

The present invention provides a shell-and-tube condenser with a large heat transfer tube bundle layout space and improved condensation effect. The condenser comprises a shell-side cylinder, within which a heat transfer tube bundle is disposed. The two ends of the shell-side cylinder are connected to a water inlet chamber and a water outlet chamber, respectively, via a connecting structure. The other ends of the water inlet chamber and the other ends of the water outlet chamber are provided with a water inlet and a water outlet, respectively. The upper and lower ends of the shell-side cylinder are provided with a steam inlet and a condensate outlet, respectively. The condenser is characterized in that the heat transfer tube bundle comprises two vertical heat transfer tube bundle groups near the center of the shell-side cylinder, with a first heat transfer tube bundle group and a second heat transfer tube bundle group disposed in the middle and lower portions of the vertical heat transfer tube bundle groups, respectively, tilted upward. The first heat transfer tube bundle group is bent inward and upward near the shell-side cylinder tube wall.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, in particular to a shell and tube condenser. Background Art

[0002] The condenser is a component of the refrigeration system and a type of heat exchanger that can convert gas or steam into liquid. The condenser occupies an important position in petrochemical production. Existing shell and tube condensers, such as Chinese invention application number CN201320567817.8, disclose a horizontal shell and tube water-cooled condenser, which is provided with several groups of heat transfer tube bundles in the shell. Each group of heat transfer tube bundles is divided into an upper heat transfer tube bundle and a lower heat transfer tube bundle, and an eight-shaped baffle is provided between the upper heat transfer tube bundle and the lower heat transfer tube bundle, thereby forming a shell-side steam cooling maze circuit. However, with this method, since the baffle has no cooling effect, such an arrangement not only makes the structural setting complicated, but also reduces the space occupied by the heat transfer tube bundle, affecting the steam condensation effect. Summary of the Invention

[0003] In response to the problem that the existing shell and tube water-cooled condenser has a complex structural layout and a small space for arranging the heat transfer tube bundle, which affects the steam condensation effect, the present invention provides a shell and tube condenser with a large space for arranging the heat transfer tube bundle and better condensation effect.

[0004] The technical solution is as follows: a shell and tube condenser, which includes a shell-side cylinder, a heat transfer tube bundle is provided inside the shell-side cylinder, and the two ends of the shell-side cylinder are respectively connected to one end of the water inlet chamber and one end of the water outlet chamber through a connecting structure, the other end of the water inlet chamber and the other end of the water outlet chamber are respectively provided with a water inlet and a water outlet, and the upper end and the lower end of the shell-side cylinder are respectively provided with a steam inlet and a condensed water outlet, characterized in that: the heat transfer tube bundle includes two vertical heat transfer tube bundle groups near the center of the shell-side cylinder, the middle and lower parts of the vertical heat transfer tube bundle groups are respectively provided with a first heat transfer tube bundle group and a second heat transfer tube bundle group inclined upward, and the first heat transfer tube bundle group is bent inward and upward near the tube wall of the shell-side cylinder.

[0005] It is further characterized in that: a horizontal first guide plate is provided above the heat transfer tube bundle, and a vertical first guide plate is provided at the lower end thereof, extending between the vertical heat transfer tube bundle group and the first heat transfer tube bundle subgroup;

[0006] Guide plates are evenly arranged inside the shell-side cylinder and between the heat transfer tube bundles, and a baffle corresponding to the steam inlet is provided above one of the guide plates;

[0007] An air extraction port is provided on one side of the shell-side cylinder. A second guide plate is provided above the air extraction port, one end of which is fixedly connected to the inner wall of the shell-side cylinder. The other end of the second guide plate is tilted downward and extends between the first heat transfer tube bundle group and the second heat transfer tube bundle group. A second guide plate is provided near the lower end of the second guide plate, which is tilted upward.

[0008] The connecting structures are evenly arranged on the circumference of the connecting flange between the water inlet chamber and the shell side cylinder, and on the circumference of the connecting flange between the water outlet chamber and the shell side cylinder. The connecting structure includes an insert that penetrates the water inlet chamber flange seat, and a corresponding slot is provided on the flange seat of the shell side cylinder. A movable cavity is provided inside the insert, and a movably connected piston rod is provided inside the movable cavity. A guide groove that cooperates with the piston rod is provided on the water inlet chamber flange seat, and the piston rod is fixedly connected to the insert by a spring on the side close to the shell side cylinder;

[0009] Positioning blocks are evenly arranged on the side of the flange seat of the water inlet chamber close to the shell side cylinder, and corresponding positioning grooves are arranged on the flange seat of the shell side cylinder;

[0010] The tube body of the heat exchange tube is made of copper-nickel alloy.

[0011] After adopting the above structure, since two vertical heat transfer tube bundle groups are provided near the center of the shell-side cylinder, the middle and lower parts of the vertical heat transfer tube bundle groups are respectively provided with the first heat transfer tube bundle group and the second heat transfer tube bundle group inclined upward, so that the hot steam forms an approximately S-shaped and Y-shaped cooling shell side, which not only increases the space occupied by the heat transfer tube bundle arrangement, but also improves the condensation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A half-section view of the overall structure of the present invention;

[0013] Figure 2 For the present invention Figure 1 AA section view;

[0014] Figure 3 For the present invention Figure 1 Enlarged view of point B in FIG.

[0015] 1. Shell-side cylinder; 2. Water inlet chamber; 21. Water inlet; 22. Insert; 23. Guide groove; 24. Piston rod; 25. Positioning block; 26. Movable cavity; 3. Water outlet chamber; 31. Water outlet; 32. Slot; 33. Positioning groove; 4. Steam inlet; 5. Condensate outlet; 6. Heat transfer tube bundle; 61 vertical heat transfer tube bundle group; 62. First heat transfer tube bundle group; 63. Second heat transfer tube bundle group; 7. Support column; 8. Fixing seat; 9. Baffle; 10. First guide plate; 101. First guide plate; 11. Exhaust port; 12. Second guide plate; 121. Second guide plate. DETAILED DESCRIPTION

[0016] like Figure 1 and Figure 2 As shown, a shell and tube condenser includes a shell-side cylinder 1, the two ends of the shell-side cylinder 1 are connected to one end of the water inlet chamber 2 and one end of the water outlet chamber 3 through a connecting structure, the other end of the water inlet chamber 2 and the other end of the water outlet chamber 3 are respectively provided with a water inlet 21 and a water outlet 31, the upper end and the lower end of the middle part of the shell-side cylinder 1 are respectively provided with a steam inlet 4 and a condensate outlet 5, and the condensate outlet 5 includes two, and a fixing seat 8 is provided at the bottom of the shell-side cylinder 1.

[0017] The shell-side cylinder 1 is provided with a heat transfer tube bundle 6. The heat exchange tubes in the heat transfer tube bundle 6 are made of copper-nickel alloy, which can effectively prevent seawater corrosion. The heat transfer tube bundle 6 includes two vertical heat transfer tube bundle groups 61 near the center of the shell-side cylinder 1. The middle and lower parts of the vertical heat transfer tube bundle groups 61 are respectively provided with a first heat transfer tube bundle group 62 and a second heat transfer tube bundle group 63 that are inclined upward. The first heat transfer tube bundle 62 is bent inward and upward near the tube wall of the shell-side cylinder 1. Hot steam enters through the steam inlet 4 above the shell-side cylinder 1. The arrangement of the heat transfer tube bundle 6 with the above structure forms the following structure: Figure 2 The approximately S-shaped and Y-shaped cooling shell shown in the figure not only makes the arrangement space of the heat transfer tube bundle 6 larger, but also has a good condensation effect.

[0018] Preferably, guide plates 9 are evenly arranged inside the shell-side cylinder 1 and between the heat transfer tube bundles 6. A baffle 91 corresponding to the steam inlet 4 is arranged above one of the guide plates 9. By setting the guide plates 9 and the baffles 91, the hot steam is formed as follows: Figure 1 Multiple cooling shell passes are shown in .

[0019] Preferably, a horizontal first guide plate 10 is provided above the heat transfer tube bundle 6. A vertical first guide plate 101 is provided at the lower end of the first guide plate 10, extending between the vertical heat transfer tube bundle group 61 and the first heat transfer tube bundle subgroup 62. The arrangement of the first guide plate 10 and the first guide plate 101 allows hot steam to enter the heat transfer tube bundle 6 from both sides of the first guide plate 10 upon entering through the steam inlet 4, thereby increasing the contact area between the hot steam and the heat transfer tube bundle 6.

[0020] Preferably, a gas extraction port 11 is provided on one side of the shell-side cylinder 1. A second guide plate 12 is provided above the gas extraction port 1, one end of which is fixedly connected to the inner wall of the shell-side cylinder 1. The other end of the second guide plate 12 is angled downward and extends between the first heat transfer tube bundle group 62 and the second heat transfer tube bundle group 63. A second guide plate 121 is provided near the lower end of the second guide plate 12, which is angled upward. The arrangement of the second guide plate 12 and the second guide plate 121 effectively prevents hot steam from being ejected from the gas extraction port 11.

[0021] like Figure 3 As shown, the water inlet chamber 2 and the shell-side cylinder 1 are detachably connected in the circumferential direction of the connecting flange, and the water outlet chamber 3 and the shell-side cylinder 1 are detachably connected in the circumferential direction of the connecting flange. Taking one of the connecting structures as an example, the connecting structure includes an insert 22 that penetrates the flange seat of the water inlet chamber 2. A push-pull block is provided on the outside of the insert 22. A slot 32 is provided at a corresponding position on the flange seat of the shell-side cylinder 1. A movable chamber 26 is provided inside the insert 22. A piston rod 24 is movably connected to the movable chamber 26. A guide groove 23 is provided on the flange seat of the water inlet chamber 2 to cooperate with the piston rod 24. The side of the piston rod 24 near the shell-side cylinder 1 is fixedly connected to the insert 22 by a spring. By pulling outward on the push-pull block connected to the outer end of the insert 22, the spring is contracted, and the insert 22 is disengaged from the slot 32, thereby separating the water inlet chamber 2 or the water outlet chamber 3 from the shell-side cylinder 1. This structure facilitates the disassembly and assembly of the water inlet chamber 2 or the water outlet chamber 3 with the shell-side cylinder 1. At the same time, the closed space formed by the guide groove 23 and the piston rod 24 can be filled with gas to increase pressure, so that the spring is compressed, thereby making the connection between the insert block 22 and the slot 32 more secure. When disassembling, the gas is extracted first and then the connection structure is disassembled without effort.

[0022] Preferably, positioning blocks 25 are evenly arranged on the side of the flange seat of the water inlet chamber 2 close to the shell side cylinder 1, and corresponding positioning grooves 33 are arranged on the flange seat of the shell side cylinder 1. The positioning blocks 25 and the positioning grooves 33 are provided so that the positioning is accurate during installation.

[0023] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by anyone familiar with the art within the technical scope disclosed by the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A shell and tube condenser, comprising a shell-side cylinder, a heat transfer tube bundle disposed within the shell-side cylinder, two ends of the shell-side cylinder connected to one end of a water inlet chamber and one end of a water outlet chamber via a connecting structure, the other ends of the water inlet chamber and the other end of the water outlet chamber being provided with a water inlet and a water outlet, respectively, and a steam inlet and a condensate outlet being provided at the upper and lower ends of the shell-side cylinder, respectively, characterized in that: The heat transfer tube bundle comprises two vertical heat transfer tube bundle groups near the center of the shell-side cylinder. A first heat transfer tube bundle group and a second heat transfer tube bundle group are respectively provided at the middle and lower parts of the vertical heat transfer tube bundle groups, and the first heat transfer tube bundle group is bent inward and upward near the tube wall of the shell-side cylinder. The first heat transfer tube bundle group and the top of the vertical heat transfer tube bundle group form an upward opening; An oblique upward opening is formed between the first heat transfer tube bundle group and the second heat transfer tube bundle group; through the arrangement of the heat transfer tube bundles, an approximately S-shaped and Y-shaped cooling shell is formed; A horizontal first guide plate is provided above the heat transfer tube bundle, and a vertical first guide plate extending between the vertical heat transfer tube bundle group and the first heat transfer tube bundle subgroup is provided at the lower end of each of the first guide plates. Guide plates are evenly arranged inside the shell-side cylinder and between the heat transfer tube bundles, and a baffle corresponding to the steam inlet is arranged above one of the guide plates.

2. The shell and tube condenser according to claim 1, characterized in that: An air extraction port is provided on one side surface of the shell-side cylinder, and a second guide plate with one end fixedly connected to the inner wall of the shell-side cylinder is provided above the air extraction port. The other end of the second guide plate is inclined downward and extends between the first heat transfer tube bundle group and the second heat transfer tube bundle group. A second guide plate inclined upward is provided near the lower end of the second guide plate.

3. A shell and tube condenser according to any one of claims 1 to 2, characterized in that: The connecting structure is evenly arranged on the circumference of the connecting flange between the water inlet chamber and the shell cylinder, and on the circumference of the connecting flange between the water outlet chamber and the shell cylinder. The connecting structure includes an insert that penetrates the water inlet chamber flange seat, and a corresponding slot is provided on the flange seat of the shell cylinder. A movable cavity is provided inside the insert, and a movably connected piston rod is provided inside the movable cavity. A guide groove matching the piston rod is provided on the water inlet chamber flange seat, and the piston rod is fixedly connected to the insert by a spring on the side close to the shell cylinder.

4. The shell and tube condenser according to claim 3, characterized in that: Positioning blocks are evenly arranged on the side surface of the flange seat of the water inlet chamber close to the shell-side cylinder, and corresponding positioning grooves are arranged on the flange seat of the shell-side cylinder.

5. The shell and tube condenser according to claim 4, characterized in that: The tube body of the heat transfer tube is made of copper-nickel alloy.

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