Winding tube bundle structure with left tube plate and right tube plate communicated

Abstract

The utility model discloses a left tube plate and right tube plate communicated winding tube bundle structure, which relates to the technical field of winding tube type heat exchangers, and comprises a left tube plate, a central tube, a winding tube component and a right tube plate, the centers of the left tube plate and the right tube plate are provided with communication holes, the left end of the central tube is welded with the left tube plate and communicated with the left communication hole, and the right end of the central tube is welded with the right tube plate. The right end of the central tube is connected with the right tube plate in a welded mode and communicated with the right communication hole so as to communicate the left tube plate with the right tube plate, the central tube is of a combined connection structure of a key and an expansion joint, and the winding tube assembly is connected to the central tube in a sleeved mode and arranged between the left tube plate and the right tube plate. The communicating holes are formed in the left pipe plate and the right pipe plate, and the left pipe plate and the right pipe plate are connected through the central pipe to form a medium channel, so that the purpose of conveying media required by specific purposes is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wound tube heat exchangers, in particular to a wound tube bundle structure in which left and right tube plates are connected. Background Art

[0002] The wound tube heat exchanger is a new type of high-efficiency heat exchanger developed in the past two decades. It is widely used in heating or cooling processes in industries such as coal chemical industry, petrochemical industry, large-scale fertilizer, natural gas processing, and comprehensive energy utilization. The main advantages of this heat exchanger are: 1) compact structure; 2) high heat transfer efficiency, which can achieve heat transfer with large temperature rise and small temperature difference; 3) small temperature difference stress between the heat exchange tube and the tube sheet; 4) multiple streams (number of streams ≥ 2) can participate in heat exchange at the same time. However, conventional wound tube heat exchangers are not convenient to achieve as shown in the attached Figure 1 and attached Figures 5-6 The specific design purposes shown in the figure require the design of a left and right tube sheet connected winding tube bundle structure, opening a connecting hole in the center of the left and right tube sheets, and connecting them through a central tube to form the required medium channel to achieve the purpose of conveying the medium required for the specific purpose. These "specific purposes" include but are not limited to the following typical uses:

[0003] Typical application 1: It can be used in direct current evaporators to construct a liquid return channel for incomplete evaporation of liquid through direct current evaporators (see attached Figure 5 ).

[0004] Typical application 2: According to the user's pipeline configuration requirements, it is used to adjust the inlet and outlet positions of the pipe process to the same side of the tube sheet (see attached Figure 6 ).

[0005] Typical application 3: According to the needs of equipment operation regulation, construct a bypass channel inside the tube to adjust the flow rate of the distribution medium flowing through the heat exchange tube, thereby adjusting the outlet temperature of the tube and shell media (see attached Figure 1 ). Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a left and right tube sheet connected winding tube bundle structure, in which a connecting hole is opened in the center of the left and right tube sheets, and the connecting holes of the left and right tube sheets are connected through a central tube to form a medium channel, so as to achieve the purpose of medium transportation required for specific purposes. These "specific purposes" include but are not limited to the following typical uses:

[0007] Typical application 1: It can be used in direct current evaporators to construct a liquid return channel for incomplete evaporation of liquid through direct current evaporators (see attached Figure 5 ).

[0008] Typical application 2: According to the user's pipeline configuration requirements, it is used to adjust the inlet and outlet positions of the pipe process to the same side of the tube sheet (see attached Figure 6 ).

[0009] Typical application 3: According to the needs of equipment operation regulation, construct a bypass channel inside the tube to adjust the flow rate of the distribution medium flowing through the heat exchange tube, thereby adjusting the outlet temperature of the tube and shell media (see attached Figure 1 ).

[0010] The purpose of the utility model is achieved through the following technical solutions: a left and right tube sheet connected winding tube bundle structure, the structure includes a winding tube bundle, the winding tube bundle includes a left tube sheet, a center tube, a winding tube assembly and a right tube sheet, the left tube sheet is provided with a left connecting hole, the right tube sheet is provided with a right connecting hole, the left end of the center tube is welded and connected to the left tube sheet, and connected to the left connecting hole of the left tube sheet, the right end of the center tube is welded and connected to the right tube sheet, and connected to the right connecting hole of the right tube sheet, thereby connecting the left tube sheet and the right tube sheet to form a medium channel that meets the special purpose, the center tube adopts a combined connection structure of a key and an expansion joint, the winding tube assembly is sleeved on the center tube, and is arranged between the left tube sheet and the right tube sheet.

[0011] The central tube comprises a central main tube, a sleeve and an inner core tube, wherein the sleeve is sleeved on the inner core tube and connected to the central main tube, an expansion joint is arranged on the inner wall of the sleeve, and one end of the expansion joint is connected to the inner core tube.

[0012] The right end of the expansion joint is fixedly connected to the inner core tube, and the left end of the expansion joint is fixedly connected to the inner wall of the sleeve.

[0013] The sleeve and the inner core tube are connected via a key.

[0014] A left communicating hole is provided at the center of the left tube plate, and a right communicating hole is provided at the center of the right tube plate.

[0015] The left tube sheet and the right tube sheet are respectively provided with a plurality of penetrating heat exchange tube holes, and the plurality of heat exchange tube holes are evenly distributed on the left tube sheet and the right tube sheet.

[0016] The left connecting hole and the right connecting hole may adopt a single hole structure or a hole group structure composed of multiple holes.

[0017] The left side of the wound tube bundle is a left tube box, which is connected to the left tube sheet. The right side of the wound tube bundle is a right tube box, which is connected to the right tube sheet. The outer sides of the left tube box, the wound tube bundle and the right tube box are sleeved with a shell.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model has a connecting hole in the center of the left and right tube plates. The connecting holes of the left and right tube plates are connected through a central tube to form a medium channel required for a specific purpose.

[0020] 2. These “specific uses” include but are not limited to the following typical uses:

[0021] Typical application 1: It can be used in direct current evaporators to construct a liquid return channel for incomplete evaporation of liquid through direct current evaporators (see attached Figure 5 ).

[0022] Typical application 2: According to the user's pipeline configuration requirements, it is used to adjust the inlet and outlet positions of the pipe process to the same side of the tube sheet (see attached Figure 6 ).

[0023] Typical application 3: According to the needs of equipment operation regulation, construct a bypass channel inside the tube to adjust the flow rate of the distribution medium flowing through the heat exchange tube, thereby adjusting the outlet temperature of the tube and shell media (see attached Figure 1 ). BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 is a schematic diagram of the structure of the central tube;

[0026] Figure 3 It is a schematic diagram of the structure of the left and right tube sheets when the left and right communicating holes adopt single holes;

[0027] Figure 4 The schematic diagram of the left and right tube sheet structures when the left and right communicating holes are hole groups composed of multiple holes;

[0028] Figure 5 A schematic diagram of the incompletely evaporated liquid reflux channel of a direct current evaporator is constructed for (typical use 1);

[0029] Figure 6 Schematic diagram for adjusting the inlet and outlet of the tube process on the same tube sheet side (typical use 2);

[0030] In the figure: 1-left tube sheet, 2-center tube, 3-wound tube assembly, 4-right tube sheet, 5-left connecting hole, 6-right connecting hole, 7-left tube box, 8-right tube box, 9-shell, 10-heat exchange tube hole, 21-center main tube, 22-casing, 23-expansion joint, 24-key, 25-inner core tube. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0032] The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] Embodiment 1:

[0034] like Figure 1 to Figure 2 As shown, a left and right tube sheet connected winding tube bundle structure, the structure includes a winding tube bundle, the winding tube bundle includes a left tube sheet 1, a central tube 2, a winding tube assembly 3 and a right tube sheet 4, the left tube sheet 1 is provided with a left connecting hole 5, the right tube sheet 4 is provided with a right connecting hole 6, the left end of the central tube 2 is welded to the left tube sheet 1 and connected to the left connecting hole 5, the right end of the central tube 2 is welded to the right tube sheet 4 and connected to the right connecting hole 6, thereby connecting the left tube sheet 1 and the right tube sheet 4, the central tube 2 adopts a combined connection structure of a key 24 and an expansion joint 23, the winding tube assembly 3 is sleeved on the central tube 2 and is arranged between the left tube sheet 1 and the right tube sheet 4, the left side of the winding tube bundle is a left tube box 7, the left tube box 7 is connected to the left tube sheet 1, the right side of the winding tube bundle is a right tube box 8, the right tube box 8 is connected to the right tube sheet 4, and the outer sides of the left tube box 7, the winding tube bundle and the right tube box 8 are sleeved with a shell 9 of a coil heat exchanger. The center tube 2 is used to connect the left tube sheet 1 and the right tube sheet 4 to form the required medium channel, which can meet the specific design purpose. In order to avoid a large constraint stress generated when the thermal expansion difference between the shell 9 and the center tube 2 is large, the center tube 2 adopts a flexible connection structure composed of a key 24 and an expansion joint 23. As a consideration for material selection and strength design, the center tube 2 should be selected and designed for strength according to relevant product standards and specifications and as a pressure-bearing component.

[0035] Embodiment 2:

[0036] On the basis of Example 1, this embodiment makes an improvement on the central tube 2, which includes a central main tube 21, a sleeve 22 and an inner core tube 25, the sleeve 22 is sleeved on the inner core tube 25, the left end of the sleeve 22 is welded and fixed to the right end of the central main tube 21, and in order to prevent the pipe-side medium flowing in the shell 9 or the central tube 2 from leaking when passing through the central tube 2, an expansion joint 23 is provided on the inner wall of the sleeve 22, and one end of the expansion joint 23 is connected to the inner core tube 25. As a consideration for material selection and strength design, the expansion joint 23 should be selected and designed for strength according to relevant product standards and specifications, and according to pressure-bearing components.

[0037] The right end of the expansion joint 23 is fixedly welded to the left end of the inner core tube 25 , and the left end of the expansion joint 23 is fixedly welded to the inner wall of the sleeve 22 .

[0038] The sleeve 22 and the inner core tube 25 are connected by a key 24. The left end of the center tube 2 is welded and fixed to the left tube sheet 1 through the center main tube 21, and the right end of the center tube 2 is welded and fixed to the right tube sheet 4 through the inner core tube 25. It should be noted that when the thermal expansion difference between the shell 9 and the center tube 2 is small and the restraining stress generated is weak, only the center main tube 21 can be welded and connected to the left tube sheet 1 and the right tube sheet 4 respectively.

[0039] Embodiment 3:

[0040] On the basis of Embodiment 1-2, this embodiment makes improvements to the left tube sheet 1 and the right tube sheet 4. A through left connecting hole 5 is provided at the center of the left tube sheet 1, and a through right connecting hole 6 is provided at the center of the right tube sheet 4.

[0041] The left tube sheet 1 and the right tube sheet 4 are respectively provided with a plurality of penetrating heat exchange tube holes 10 , and the plurality of heat exchange tube holes 10 are evenly distributed on the left tube sheet 1 and the right tube sheet 4 .

[0042] like Figure 3 to Figure 4 As shown, the left communicating hole 5 and the right communicating hole 6 may adopt a single hole structure or a hole group structure composed of multiple holes.

[0043] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A left and right tube sheet connected winding tube bundle structure, characterized in that: The invention comprises a winding tube bundle, wherein the winding tube bundle comprises a left tube sheet (1), a central tube (2), a winding tube assembly (3) and a right tube sheet (4); the left tube sheet (1) is provided with a left connecting hole (5); the right tube sheet (4) is provided with a right connecting hole (6); the left end of the central tube (2) is welded to the left tube sheet (1) and connected to the left connecting hole (5); the right end of the central tube (2) is welded to the right tube sheet (4) and connected to the right connecting hole (6), thereby connecting the left tube sheet (1) and the right tube sheet (4); the central tube (2) adopts a combined connection structure of a key (24) and an expansion joint (23); the winding tube assembly (3) is sleeved on the central tube (2) and arranged between the left tube sheet (1) and the right tube sheet (4).

2. The left and right tube sheet connected winding tube bundle structure according to claim 1 is characterized in that: The central tube (2) comprises a central main tube (21), a sleeve (22) and an inner core tube (25); the sleeve (22) is sleeved on the inner core tube (25); the sleeve (22) is connected to the central main tube (21); an expansion joint (23) is provided on the inner wall of the sleeve (22); one end of the expansion joint (23) is connected to the inner core tube (25).

3. The left and right tube sheet connected winding tube bundle structure according to claim 2 is characterized in that: The right end of the expansion joint (23) is fixedly connected to the inner core tube (25), and the left end of the expansion joint (23) is fixedly connected to the inner wall of the sleeve (22).

4. A left and right tube sheet connected winding tube bundle structure according to claim 2 or 3, characterized in that: The sleeve (22) and the inner core tube (25) are connected via a key (24).

5. The left and right tube sheet connected winding tube bundle structure according to claim 1, characterized in that: A left connecting hole (5) is provided at the center of the left tube sheet (1), and a right connecting hole (6) is provided at the center of the right tube sheet (4), and the two are connected through a central tube (2) to form a medium channel.

6. The left and right tube sheet connected winding tube bundle structure according to claim 5, characterized in that: The left tube sheet (1) and the right tube sheet (4) are respectively provided with a plurality of penetrating heat exchange tube holes (10), and the plurality of heat exchange tube holes (10) are evenly distributed on the left tube sheet (1) and the right tube sheet (4).

7. A left and right tube sheet connected winding tube bundle structure according to any one of claims 5-6, characterized in that: The left communicating hole (5) and the right communicating hole (6) both adopt a single-hole structure.

8. A left and right tube sheet connected winding tube bundle structure according to any one of claims 5-6, characterized in that: The left communicating hole (5) and the right communicating hole (6) both adopt a hole group structure composed of multiple holes.

9. The left and right tube sheet connected winding tube bundle structure according to claim 1, characterized in that: The left side of the wound tube bundle is a left tube box (7), which is connected to the left tube sheet (1); the right side of the wound tube bundle is a right tube box (8), which is connected to the right tube sheet (4); and the outer sides of the left tube box (7), the wound tube bundle and the right tube box (8) are sleeved with a shell (9).

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