Stuffing box type heat exchanger core group structure

Abstract

The utility model provides a stuffing box type heat exchanger core group structure, which relates to the technical field of heat exchangers, and comprises a shell, an inner cylinder, a plurality of groups of baffle plates, a sealing element and a core group tube bundle, the baffle plates are arranged in the shell, the core group tube bundle is connected with the plurality of groups of baffle plates, the inner cylinder is arranged in the shell, and the sealing element is arranged in the inner cylinder. The inner cylinder wraps the baffle plate and the core group tube bundle, the inner wall of the inner cylinder abuts against the outer wall of the baffle plate, a gap is formed between the shell and the inner cylinder, and a sealing piece is arranged in the gap; according to the utility model, the inner cylinder body formed by curling the thin-wall plate is additionally arranged between the baffle plate and the shell, the inner cylinder body can be tightly attached to the outer ring of the baffle plate, the baffle plate and the core group tube bundle can be wrapped by the inner cylinder body to form an inner channel, and then the gap between the shell and the inner cylinder body is filled by using the sealing element, so that the inner cylinder body can be tightly attached to the inner cylinder body; by means of the arrangement, the requirement that a mounting gap is needed between the shell and the baffle plate is met, and bypass leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a core group structure of a stuffing function type heat exchanger. Background Art

[0002] A shell-and-tube heat exchanger, also known as a tubular heat exchanger, is a type of heat exchanger that uses the wall of the tube bundle enclosed in the shell as the heat transfer surface. This type of heat exchanger is widely used in various industrial and civilian fields due to its simple structure, low cost, wide flow cross-section, and easy scale cleaning. In a shell-and-tube heat exchanger, the gap between the baffle and the shell is an important indicator for ensuring its heat transfer efficiency. The larger the gap, the greater the leakage, and the further the actual medium flow state deviates from the ideal state, the greater the impact on the heat transfer efficiency. The smaller the gap, the higher the heat transfer efficiency, and the equipment volume and cost are significantly reduced. In order to reduce the gap, it is necessary to improve the accuracy of the shell. The higher the accuracy, the greater the cost. However, in order to ensure the smooth installation of the equipment, a certain installation gap must be maintained between the shell and the baffle. In this case, bypass leakage will occur between the baffle and the shell. Therefore, the utility model proposes a stuffing box heat exchanger core group structure to address the shortcomings of the existing technology. Summary of the Invention

[0003] In response to the above problems, the purpose of the present utility model is to provide a stuffing box heat exchanger core group structure, by adding an inner cylinder formed by curling a thin-walled plate between the baffle and the shell, the inner cylinder can be close to the outer ring of the baffle, and the inner cylinder can wrap the baffle and the core group tube bundle to form an internal channel, and then the gap between the shell and the inner cylinder is filled by using a seal. Such an arrangement meets the requirement of an installation gap between the shell and the baffle and also avoids the occurrence of bypass leakage.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A stuffing box heat exchanger core group structure includes a shell, an inner cylinder, a baffle, a seal and a core group tube bundle. The shell is provided with a baffle, and the baffles are arranged in multiple groups. The multiple groups of baffles are equidistantly arranged inside the shell. The shell is provided with a core group tube bundle, and the core group tube bundle is connected to the multiple groups of baffles. The shell is provided with an inner cylinder, and the inner cylinder wraps the baffle and the core group tube bundle inside, and the inner wall of the inner cylinder abuts the outer wall of the baffle, forming a gap between the shell and the inner cylinder, and a seal is provided in the gap, and the seal completely seals the gap.

[0006] A further improvement is that the core group tube bundle is composed of multiple heat exchange tubes, end plates are provided at both ends of the shell, and fixing holes are provided on the end plates. The number of the fixing holes is adapted to the number of heat exchange tubes.

[0007] A further improvement is that: the baffle is provided with a through hole, and there are multiple through holes. The multiple heat exchange tubes are respectively fixed in the multiple through holes, and both ends of the heat exchange tubes are connected to the fixing holes.

[0008] A further improvement is that the inner cylinder is formed by curling a thin-walled plate, one end of the thin-walled plate is provided with a lap groove, the other end of the thin-walled plate is provided with a lap piece, and the lap piece is connected to the lap groove.

[0009] A further improvement is that the thickness of the thin-walled plate is 1 / 2 to 1 / 3 of the thickness of the baffle, and the length of the thin-walled plate is equal to the distance between the two groups of baffles at the end.

[0010] A further improvement is that a sealing plate is provided inside the shell inside the end plate, and a docking hole adapted to the fixing hole is provided on the sealing plate, and both ends of the heat exchange tube pass through the docking hole and are connected to the fixing hole.

[0011] The beneficial effects of the present invention are as follows: the present invention adds an inner cylinder formed by curling a thin-walled plate between the baffle and the shell, the inner cylinder can be tightly attached to the outer ring of the baffle, the inner cylinder can wrap the baffle and the core group tube bundle to form an internal channel, and then the gap between the shell and the inner cylinder is filled by using a seal. Such a setting not only meets the requirement of an installation gap between the shell and the baffle, but also avoids the occurrence of bypass leakage, and can also improve heat exchange efficiency, reduce the accuracy of the shell, reduce costs, and have sufficient installation gap, which facilitates disassembly, inspection and cleaning during installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0013] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at center A;

[0014] Figure 3 It is a side view schematic diagram of the inner cylinder structure of the present utility model.

[0015] Among them: 1. Shell; 2. Inner cylinder; 3. Baffle; 4. Seal; 5. Core group tube bundle; 6. End plate; 7. Fixing hole; 8. Through hole; 9. Sealing plate. DETAILED DESCRIPTION

[0016] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention. Example 1

[0017] according to Figure 1-3 As shown, this embodiment proposes a stuffing box heat exchanger core group structure, including a shell 1, an inner cylinder 2, a baffle 3, a seal 4 and a core group tube bundle 5, the shell 1 is provided with a baffle 3, the baffle 3 is arranged in multiple groups, and the multiple groups of baffles 3 are equidistantly arranged inside the shell 1, the shell 1 is provided with a core group tube bundle 5, the core group tube bundle 5 is connected to the multiple groups of baffles 3, the shell 1 is provided with an inner cylinder 2, the inner cylinder 2 wraps the baffle 3 and the core group tube bundle 5 inside, and the inner wall of the inner cylinder 2 abuts against the outer wall of the baffle 3, a gap is formed between the shell 1 and the inner cylinder 2, a seal 4 is provided in the gap, and the seal 4 completely seals the gap.

[0018] The utility model adds an inner cylinder 2 formed by curling a thin-walled plate between the baffle 3 and the shell 1. The inner cylinder 2 can be tightly attached to the outer ring of the baffle 3. The inner cylinder 2 can wrap the baffle 3 and the core group tube bundle 5 to form an internal channel, and then the gap between the shell 1 and the inner cylinder 2 is filled by using the seal 4. This arrangement meets the requirement of an installation gap between the shell 1 and the baffle 3 and avoids the occurrence of bypass leakage. It can also improve the heat exchange efficiency, reduce the accuracy of the shell 1, reduce costs, and have sufficient installation gap, which is convenient for installation and disassembly, maintenance and cleaning during use.

[0019] The core tube bundle 5 is composed of multiple heat exchange tubes. End plates 6 are provided at both ends of the shell 1. These end plates 6 are provided with fixing holes 7, the number of which matches the number of heat exchange tubes. The baffle 3 is provided with multiple through-holes 8, each of which is passed through and fixed to the multiple through-holes 8. The ends of the heat exchange tubes are connected to the fixing holes 7. A sealing plate 9 is provided within the shell 1 inside the end plates 6. This sealing plate 9 has docking holes that match the fixing holes 7. The ends of the heat exchange tubes pass through the docking holes and connect to the fixing holes 7. This arrangement improves the installation stability of the core tube bundle 5. Example 2

[0020] according to Figure 1-3 As shown, this embodiment proposes a stuffing box heat exchanger core group structure, including a shell 1, an inner cylinder 2, a baffle 3, a seal 4 and a core group tube bundle 5, the shell 1 is provided with a baffle 3, the baffle 3 is arranged in multiple groups, and the multiple groups of baffles 3 are equidistantly arranged inside the shell 1, the shell 1 is provided with a core group tube bundle 5, the core group tube bundle 5 is connected to the multiple groups of baffles 3, the shell 1 is provided with an inner cylinder 2, the inner cylinder 2 wraps the baffle 3 and the core group tube bundle 5 inside, and the inner wall of the inner cylinder 2 abuts against the outer wall of the baffle 3, a gap is formed between the shell 1 and the inner cylinder 2, a seal 4 is provided in the gap, and the seal 4 completely seals the gap.

[0021] The inner cylinder 2 is formed by rolling a thin-walled plate. One end of the thin-walled plate is provided with a lap groove, and the other end of the thin-walled plate is provided with a lap piece connected to the lap groove. By providing the lap groove and lap piece, the end connection of the thin-walled plate can be flattened when the thin-walled plate is rolled to form the inner cylinder 2, thereby achieving a tight wrapping around the outer side of the baffle 3.

[0022] The thickness of the thin-walled plate is 1 / 4 to 1 / 3 of the thickness of the baffles 3, and the length of the thin-walled plate is equal to the distance between the two end groups of the baffles 3. Properly setting the thickness of the thin-walled plate allows the coil to form a structurally stable inner cylinder 2 while also maximally controlling the gap size between the shell 1 and the baffles 3.

[0023] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A packing-type heat exchanger core structure, characterized in that: The invention comprises a shell (1), an inner cylinder (2), a baffle (3), a seal (4) and a core group tube bundle (5), wherein the shell (1) is provided with a baffle (3), a plurality of baffles (3) are provided, and the plurality of baffles (3) are equidistantly provided inside the shell (1), a core group tube bundle (5) is provided inside the shell (1), and the core group tube bundle (5) is connected to the plurality of baffles (3), an inner cylinder (2) is provided inside the shell (1), the inner cylinder (2) wraps the baffle (3) and the core group tube bundle (5) inside, and the inner wall of the inner cylinder (2) abuts against the outer wall of the baffle (3), forming a gap between the shell (1) and the inner cylinder (2), a seal (4) is provided in the gap, and the seal (4) completely seals the gap.

2. The packing-type heat exchanger core structure according to claim 1, characterized in that: The core group tube bundle (5) is composed of a plurality of heat exchange tubes. End plates (6) are provided at both ends of the shell (1). The end plates (6) are provided with fixing holes (7). The number of the fixing holes (7) is adapted to the number of the heat exchange tubes.

3. The packing-type heat exchanger core structure according to claim 2, characterized in that: The baffle (3) is provided with a through hole (8), and there are a plurality of through holes (8). The plurality of heat exchange tubes are respectively passed through and fixed in the plurality of through holes (8), and both ends of the heat exchange tubes are connected to the fixing holes (7).

4. The packing-type heat exchanger core structure according to claim 1, characterized in that: The inner cylinder (2) is formed by curling a thin-walled plate, one end of the thin-walled plate is provided with a lap groove, the other end of the thin-walled plate is provided with a lap piece, and the lap piece is connected to the lap groove.

5. The packing-type heat exchanger core structure according to claim 4, characterized in that: The thickness of the thin-walled plate is 1 / 4 to 1 / 3 of the thickness of the baffle (3), and the length of the thin-walled plate is equal to the distance between the two groups of baffles (3) at the end.

6. The packing-type heat exchanger core structure according to claim 2, characterized in that: A sealing plate (9) is provided inside the shell (1) inside the end plate (6), and a docking hole adapted to the fixing hole (7) is provided on the sealing plate (9). Both ends of the heat exchange tube pass through the docking hole and are connected to the fixing hole (7).

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