A high-pressure heater with high efficiency heat exchange

Abstract

This utility model discloses a high-efficiency heat exchange high-pressure heater, belonging to the technical field of high-pressure heaters. The high-efficiency heat exchange high-pressure heater includes a tank and a support frame fixedly connected to the bottom of the tank. The tank consists of a feedwater chamber and a heating chamber connected in a conductive manner. The feedwater chamber has a feedwater inlet and a feedwater outlet at its bottom and top, respectively. An independent flow-diverting baffle is fixedly connected to the inner side of the feedwater chamber. This baffle, through a first flow-diverting baffle, a partition plate, and a second flow-diverting baffle, divides the inner cavity of the heating chamber into a continuous S-shaped flow channel with a zigzag pattern. This effectively extends the path of steam flow in the heating chamber, thereby effectively increasing the heat exchange time with the cold water flowing in the tube bundle. Furthermore, fins are connected to the individual tubes of the tube bundle, effectively increasing the heat exchange area between the tube bundle and the steam, thus improving heat exchange efficiency and reducing heat energy waste.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure heater technology, and more specifically, to a high-pressure heater with high-efficiency heat exchange. Background Technology

[0002] High-pressure heaters are devices that use a portion of the extracted steam from a steam turbine to heat feedwater. As a heat conversion device, they are mainly used in the regenerative systems of large thermal power units, and their heat transfer performance directly affects the unit's economy and safety. Therefore, improving the heat transfer efficiency of high-pressure heaters and reducing irreversible heat losses during the heat transfer process has become one of the important measures to achieve efficient energy utilization.

[0003] Existing high-pressure heaters suffer from low heat exchange efficiency and wasted heat energy due to the short flow path of high-pressure steam and the small contact area with the tube bundle. To improve heat exchange efficiency and reduce heat energy waste, we propose a high-efficiency high-pressure heater to address these problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a high-pressure heater with high-efficiency heat exchange. It divides the inner cavity of the heating chamber into a continuous S-shaped flow channel with a first baffle, a partition plate, and a second baffle, thereby effectively extending the flow path of steam in the heating chamber and thus effectively increasing the heat exchange time with the cold water flowing in the tube bundle. Furthermore, the fins connected to the single tubes of the tube bundle effectively increase the heat exchange area between the tube bundle and the steam, thereby improving the heat exchange efficiency and reducing the waste of thermal energy.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A high-efficiency heat exchange high-pressure heater includes a tank and a support frame fixedly connected to the bottom of the tank. The tank consists of a water supply chamber and a heating chamber that are electrically connected.

[0009] The water supply tank has a water inlet and a water outlet at its bottom and top, respectively, and an independent diversion baffle is fixedly connected to the inner side of the water supply tank.

[0010] The heating chamber has a U-shaped tube bundle installed on its inner side via a bracket, and the tube bundle is connected to the water supply chamber. Fins are fixedly connected to each tube of the tube bundle, and multiple fins are evenly spaced. A steam inlet is provided at the top of the heating chamber. A first baffle corresponding to the steam inlet is installed on the inner side of the heating chamber. A steam outlet is provided at the bottom of the heating chamber. A second baffle corresponding to the steam outlet is installed below the first baffle. A partition plate fixedly connected to the heating chamber is provided between the second baffle and the first baffle.

[0011] A tube sheet for connecting the tube bundle is installed between the heating chamber and the water supply chamber.

[0012] Furthermore, an automatic pressure relief valve connected to the inner cavity of the heating chamber is provided on one side of the steam inlet.

[0013] Furthermore, the inner cavity of the water supply chamber is divided into an inlet chamber and an outlet chamber by the independent diversion baffle.

[0014] Furthermore, the tube sheet is provided with inlet and outlet holes for connecting the tube bundle;

[0015] The water inlet hole is electrically connected to the water inlet chamber, and the water outlet hole is electrically connected to the water outlet chamber.

[0016] Furthermore, the end portion of the partition plate extends to the bend portion of the tube bundle.

[0017] Furthermore, the first baffle, the partition plate, and the second baffle divide the inner cavity of the heating chamber into a continuous S-shaped flow channel with a zigzag pattern.

[0018] Furthermore, both the tube bundle and the fins are made of copper-aluminum alloy.

[0019] 3. Beneficial effects

[0020] Compared with existing technologies, the advantages of this utility model are:

[0021] (1) In this scheme, high-pressure steam is delivered to the heating chamber through the steam inlet. The inner cavity of the heating chamber is divided into a continuous S-shaped flow channel by the first baffle, the partition plate and the second baffle, which can effectively extend the flow path of the steam in the heating chamber, thereby effectively increasing the heat exchange time with the cold water flowing in the tube bundle. Furthermore, the fins connected to the single tubes of the tube bundle can effectively increase the heat exchange area between the tube bundle and the steam, thereby improving the heat exchange efficiency and reducing the waste of heat energy.

[0022] (2) In this solution, an automatic pressure relief valve is installed on the heating chamber. After the pressure in the heating chamber is set to the pressure relief valve, when the pressure in the heating chamber reaches the set value, the excess pressure inside the heating chamber is released through the automatic pressure relief valve, thereby ensuring the constant pressure inside the heating chamber and ensuring the safety of the heater during use. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a side view of the tank body of this utility model;

[0025] Figure 3 This is a cross-sectional view of part AA of the tank body of this utility model;

[0026] Figure 4 This is a schematic diagram of the tube bundle structure of this utility model.

[0027] Explanation of the labels in the diagram:

[0028] 1. Tank body; 2. Support frame; 3. Water supply chamber; 4. Water supply inlet; 5. Water supply outlet; 6. Independent diversion baffle; 7. Heating chamber; 8. Tube bundle; 9. Fins; 10. Tube sheet; 11. Steam inlet; 12. Steam outlet; 13. First baffle; 14. Second baffle; 15. Divider plate; 16. Automatic pressure relief valve. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] Example:

[0031] Please see Figure 1-4 A high-efficiency heat exchange high-pressure heater includes a tank 1 and a support frame 2 fixedly connected to the bottom of the tank 1. The tank 1 is composed of a water supply chamber 3 and a heating chamber 7 that are connected in a conductive manner.

[0032] The bottom and top of the water supply tank 3 are respectively provided with a water inlet 4 and a water outlet 5, and an independent diversion baffle 6 is fixedly connected to the inner side of the water supply tank 3.

[0033] The heating chamber 7 has a U-shaped tube bundle 8 installed on the inner side by a bracket, and the tube bundle 8 is connected to the water supply chamber 3. Fins 9 are fixedly connected to each tube of the tube bundle 8, and multiple fins 9 are evenly spaced. The top of the heating chamber 7 is provided with a steam inlet 11. The inner side of the heating chamber 7 is provided with a first baffle plate 13 corresponding to the steam inlet 11. The bottom of the heating chamber 7 is provided with a steam outlet 12. The bottom of the heating chamber 7 is provided with a second baffle plate 14 corresponding to the steam outlet 12 is installed below the first baffle plate 13. A partition plate 15 fixedly connected to the heating chamber 7 is provided between the second baffle plate 14 and the first baffle plate 13.

[0034] A tube sheet 10 for connecting the tube bundle 8 is installed between the heating chamber 7 and the water supply chamber 3;

[0035] It should be noted that when the high-pressure heater with high-efficiency heat exchange is in use, cold water is sent into the water supply chamber 3 through the water supply inlet 4, and at the same time, the tube bundle 8 connected on the tube sheet 10 is used to return the water to the water supply chamber 3 which is separated by the independent diversion baffle 6.

[0036] Simultaneously, high-pressure steam is supplied to the heating chamber 7 through the steam inlet 11. The inner cavity of the heating chamber 7 is divided into a continuous S-shaped flow channel by the first baffle 13, the partition plate 15, and the second baffle 14, which effectively extends the flow path of the steam in the heating chamber 7, thereby effectively increasing the heat exchange time with the cold water flowing in the tube bundle 8. Furthermore, the fins 9 connected to the single tubes of the tube bundle 8 effectively increase the heat exchange area between the tube bundle 8 and the steam, thereby improving the heat exchange efficiency and reducing the waste of heat energy. After completing the heat transformation, the high-pressure steam is discharged through the steam outlet 12.

[0037] like Figure 1 As shown, an automatic pressure relief valve 16 connected to the inner cavity of the heating chamber 7 is provided on one side of the steam inlet 11.

[0038] It should be noted that by installing an automatic pressure relief valve 16 on the heating chamber 7 and setting the pressure for the automatic pressure relief valve 16, when the pressure in the heating chamber 7 reaches the set value, the excess pressure inside the heating chamber 7 will be released through the automatic pressure relief valve 16, thereby ensuring the constant pressure inside the heating chamber 7 and ensuring the safety of the heater during use.

[0039] like Figure 3 As shown, the inner cavity of the water supply chamber 3 is divided into an inlet chamber and an outlet chamber by an independent diversion baffle 6, and the tube sheet 10 is provided with an inlet hole and an outlet hole for connecting the tube bundle 8.

[0040] The water inlet is electrically connected to the water inlet chamber, and the water outlet is electrically connected to the water outlet chamber;

[0041] It should be noted that the interior of the water supply chamber 3 is divided into two chambers by using an independent diversion baffle 6, thereby separating the cold water from the hot water after heat exchange.

[0042] like Figure 3 As shown, the end portion of the partition plate 15 extends to the bend portion of the tube bundle 8, and the first flow baffle 13, the partition plate 15, and the second flow baffle 14 divide the inner cavity of the heating chamber 7 into a zigzag continuous S-shaped flow channel.

[0043] It should be noted that this effectively extends the path of steam flow in the heating chamber 7, thereby effectively increasing the heat exchange time with the cold water flowing in the tube bundle 8.

[0044] like Figure 4 As shown, both tube bundle 8 and fin 9 are made of copper-aluminum alloy;

[0045] It should be noted that this can effectively improve heat exchange efficiency.

[0046] In use: Cold water is sent into the water supply chamber 3 through the water supply inlet 4, and at the same time, the water flows back to the water supply chamber 3 separated by the independent diversion baffle 6 through the tube bundle 8 connected on the tube sheet 10.

[0047] Simultaneously, high-pressure steam is supplied to the heating chamber 7 through the steam inlet 11. The inner cavity of the heating chamber 7 is divided into a continuous S-shaped flow channel by the first baffle 13, the partition plate 15, and the second baffle 14, which effectively extends the flow path of the steam in the heating chamber 7, thereby effectively increasing the heat exchange time with the cold water flowing in the tube bundle 8. Furthermore, the fins 9 connected to the single tubes of the tube bundle 8 effectively increase the heat exchange area between the tube bundle 8 and the steam, thereby improving the heat exchange efficiency and reducing the waste of heat energy. After completing the heat transformation, the high-pressure steam is discharged through the steam outlet 12.

[0048] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A high-efficiency heat exchange high-pressure heater, comprising a tank (1) and a support frame (2) fixedly connected to the bottom of the tank (1), characterized in that: The tank (1) consists of a water supply chamber (3) and a heating chamber (7) that are connected in a conductive manner; The bottom and top of the water supply tank (3) are respectively provided with a water inlet (4) and a water outlet (5), and an independent diversion baffle (6) is fixedly connected to the inner side of the water supply tank (3). The heating chamber (7) has a U-shaped tube bundle (8) installed on its inner side by a bracket, and the tube bundle (8) is connected to the water supply chamber (3). Fins (9) are fixedly connected to each tube of the tube bundle (8), and multiple fins (9) are evenly spaced. A steam inlet (11) is provided at the top of the heating chamber (7). A first baffle plate (13) corresponding to the steam inlet (11) is installed on the inner side of the heating chamber (7). A steam outlet (12) is provided at the bottom of the heating chamber (7). A second baffle plate (14) corresponding to the steam outlet (12) is installed below the first baffle plate (13). A partition plate (15) fixedly connected to the heating chamber (7) is provided between the second baffle plate (14) and the first baffle plate (13). A tube sheet (10) for connecting the tube bundle (8) is installed between the heating chamber (7) and the water supply chamber (3).

2. The high-pressure heater with high-efficiency heat exchange according to claim 1, characterized in that: An automatic pressure relief valve (16) is provided on one side of the steam inlet (11) and connected to the inner cavity of the heating chamber (7).

3. The high-pressure heater with high-efficiency heat exchange according to claim 1, characterized in that: The inner cavity of the water supply chamber (3) is divided into an inlet chamber and an outlet chamber by the independent diversion baffle (6).

4. The high-pressure heater with high-efficiency heat exchange according to claim 3, characterized in that: The tube sheet (10) is provided with an inlet and an outlet for connecting the tube bundle (8); The water inlet hole is electrically connected to the water inlet chamber, and the water outlet hole is electrically connected to the water outlet chamber.

5. A high-efficiency heat exchange high-pressure heater according to claim 1, characterized in that: The end portion of the partition plate (15) extends to the bend portion of the tube bundle (8).

6. The high-pressure heater with high-efficiency heat exchange according to claim 1, characterized in that: The first baffle (13), the partition plate (15), and the second baffle (14) divide the inner cavity of the heating chamber (7) into a zigzag continuous S-shaped flow channel.

7. The high-pressure heater with high-efficiency heat exchange according to claim 1, characterized in that: Both the tube bundle (8) and the fin (9) are made of copper-aluminum alloy.

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