Vertical heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers, and discloses a vertical heat exchanger which comprises a tube pass box body, a box body sealing head, a tube plate, a cross-shaped partition plate, a shell pass box body, a U-shaped heat exchange tube, a cooling medium I inlet, a cooling medium II inlet, a cooling medium II inlet, a cooling medium II outlet, a thermal medium outlet and a baffle plate. When the vertical heat exchanger is used for condensing or cooling a heat medium, different cooling media can be switched to be used for preheating according to heat exchange requirements, and two different cooling media can be preheated at the same time; and the pollution of two cooling media is avoided, the addition of other condensing equipment is reduced, the occupation of production space is reduced, and the investment cost is reduced while the stable operation of the condensing system is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a vertical heat exchanger. Background Art

[0002] Heat exchangers are used to achieve heat exchange of media. They are devices that transfer part of the heat of hot fluid to cold fluid. They are widely used in industries such as chemical, petroleum, power and atomic energy.

[0003] Existing shell and tube heat exchangers can generally only take one cooling medium, which limits the diversity of cooling mediums and causes the heat exchanger to be used only as a condenser or preheater under a single working condition. When different cooling media are needed, in order to avoid cooling medium contamination, it is necessary to add a heat exchanger for switching, which increases investment and production space occupation. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a vertical heat exchanger. The technical solution adopted by the utility model is as follows:

[0005] A vertical heat exchanger, comprising a tube-side box, a box head, a tube sheet, a cross-shaped partition, a shell-side box, a U-shaped heat exchange tube, a first cooling medium inlet, a first cooling medium outlet, a second cooling medium inlet, a second cooling medium outlet, a heat medium outlet and a baffle;

[0006] The box head is provided above the tube-side box, and a tube sheet is provided between the tube-side box and the shell-side box; the cross-shaped partition is vertically provided in the tube-side box, and the tube-side box is divided into a cooling medium feed chamber 1, a cooling medium discharge chamber 1, a cooling medium feed chamber 2 and a cooling medium discharge chamber 2 by the cross-shaped partition; the box head of the cooling medium feed chamber 1 is provided with a cooling medium inlet, the box head of the cooling medium discharge chamber 1 is provided with a cooling medium outlet, the box head of the cooling medium feed chamber 2 is provided with a cooling medium inlet, and the box head of the cooling medium discharge chamber 2 is provided with a cooling medium outlet; a heat medium outlet is provided on the upper side of the shell-side box; the bottom of the shell-side box is open;

[0007] The U-shaped heat exchange tube is vertically installed inside the shell-side box, and the U-shaped heat exchange tube includes U-shaped heat exchange tube 1 and U-shaped heat exchange tube 2; multiple feed ports of the U-shaped heat exchange tube 1 are sealed and connected to the cooling medium 1 feed cavity through the tube sheet, and multiple discharge ports of the U-shaped heat exchange tube 1 are sealed and connected to the cooling medium 1 discharge cavity through the tube sheet; multiple feed ports of the U-shaped heat exchange tube 2 are sealed and connected to the cooling medium 2 feed cavity through the tube sheet, and multiple discharge ports of the U-shaped heat exchange tube 2 are sealed and connected to the cooling medium 2 discharge cavity through the tube sheet; multiple baffles are evenly distributed on the U-shaped heat exchange tube in the vertical direction, and multiple baffles are fixedly connected to the U-shaped heat exchange tube.

[0008] In the vertical heat exchanger of the utility model, the flow path of cooling medium one is: cooling medium one inlet → cooling medium one feeding cavity → U-shaped heat exchange tube one → cooling medium one discharge cavity → cooling medium one outlet; the flow path of cooling medium two is: cooling medium two inlet → cooling medium two feeding cavity → U-shaped heat exchange tube two → cooling medium two discharge cavity → cooling medium two outlet; the flow path of heat medium is: heat medium inlet (open at the bottom of the shell side box) → baffle → heat medium outlet.

[0009] Furthermore, a lower head is provided at the bottom of the shell-side box, and a heat medium inlet is provided on the lower head.

[0010] Furthermore, the vertical heat exchanger also includes a distance rod, the upper end of which is fixedly connected to the tube sheet and to the plurality of baffles.

[0011] Furthermore, the cooling medium feed cavity 1 is larger than the cooling medium discharge cavity 1; the cooling medium feed cavity 2 is larger than the cooling medium discharge cavity 2.

[0012] Furthermore, the cross-sectional shapes of the tube-side housing and the shell-side housing are circular, square or elliptical.

[0013] The utility model provides a vertical heat exchanger, which can switch to use different cooling media for preheating according to heat exchange requirements when condensing or cooling heat, and can also preheat two different cooling media at the same time; it avoids pollution of the two cooling media, reduces the addition of other condensing equipment, reduces the occupation of production space, and reduces investment costs while ensuring stable operation of the condensing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the vertical heat exchanger of the utility model;

[0015] Figure 2 It is a top view of the vertical heat exchanger of the utility model;

[0016] Figure 3It is a schematic diagram of a vertical heat exchanger application system in an embodiment of the present utility model.

[0017] Description of the markings in the figure:

[0018] 1. Tube-side box; 2. Shell-side box; 3. Tube sheet; 4. Cross-shaped partition; 5. Box head; 6. U-shaped heat exchange tube; 7. Cooling medium inlet 1; 8. Cooling medium outlet 1; 9. Cooling medium inlet 2; 10. Cooling medium outlet 2; 11. Hot medium outlet; 12. Baffle; 13. Spacer; 14. Valve 2; 15. Valve 1. DETAILED DESCRIPTION

[0019] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0020] Example:

[0021] like Figure 1-Figure 2 As shown, a vertical heat exchanger includes a tube-side box 1, a box head 5, a tube sheet 3, a cross-shaped partition 4, a shell-side box 2, a U-shaped heat exchange tube 6, a cooling medium inlet 1 7, a cooling medium inlet 2 8, a cooling medium inlet 2 9, a cooling medium outlet 2 10, a hot medium outlet 11, a baffle 12 and a distance rod 13.

[0022] The cross-sectional shapes of the tube-side box body 1 and the shell-side box body 2 are circular, the box body head 5 is provided above the tube-side box body 1, a tube sheet 3 is provided between the tube-side box body 1 and the shell-side box body 2, the cross-shaped partition 4 is vertically provided in the tube-side box body 1, and the tube-side box body 1 is divided into a cooling medium feed chamber 1, a cooling medium discharge chamber 1, a cooling medium feed chamber 2 and a cooling medium discharge chamber 2 by the cross-shaped partition 4; the box body head of the cooling medium feed chamber 1 is provided with a cooling medium inlet 7, the box body head of the cooling medium discharge chamber 1 is provided with a cooling medium outlet 8, the box body head of the cooling medium feed chamber 2 is provided with a cooling medium inlet 9, and the box body head of the cooling medium discharge chamber 2 is provided with a cooling medium outlet 10; a heat medium outlet 11 is provided on the upper side of the shell-side box body 2; The bottom of the shell-side box 2 is open; the U-shaped heat exchange tube 6 is vertically installed inside the shell-side box 2, and the U-shaped heat exchange tube 6 includes U-shaped heat exchange tube 1 and U-shaped heat exchange tube 2; the feed ports of multiple U-shaped heat exchange tubes 1 are sealed through the tube sheet 3 to communicate with the cooling medium 1 feed cavity, and the discharge ports of multiple U-shaped heat exchange tubes 1 are sealed through the tube sheet 3 to communicate with the cooling medium 1 discharge cavity; the feed ports of multiple U-shaped heat exchange tubes 2 are sealed through the tube sheet 3 to communicate with the cooling medium 2 feed cavity, and the discharge ports of multiple U-shaped heat exchange tubes 2 are sealed through the tube sheet 3 to communicate with the cooling medium 2 discharge cavity; a plurality of baffles 12 are evenly distributed on the U-shaped heat exchange tube 6 in the vertical direction, and the plurality of baffles 12 are fixedly connected to the U-shaped heat exchange tube 6, and the upper end of the distance rod 13 is fixedly connected to the tube sheet 3, and is fixedly connected to the plurality of baffles 12 in sequence.

[0023] The vertical heat exchanger application system of this embodiment is as follows Figure 3As shown, when the system is in operation, the pipeline valve 2 14 of the cooling medium second circulating water is opened to allow the circulating water to continuously and stably flow into the second tube side, and the hot medium gas phase 1,2-propylene glycol continuously and stably enters the shell side. The flow path of the cooling medium second circulating water is: cooling medium second inlet 9 → cooling medium second feeding cavity → U-shaped heat exchange tube 2 → cooling medium second discharge cavity → cooling medium second outlet 10; the hot medium gas phase 1,2-propylene glycol enters from the bottom opening of the shell side box 2 and rises along the baffle 12, and the cooling medium second circulating water condenses the gas phase 1,2-propylene glycol in the shell side through the tube wall of the U-shaped heat exchange tube 2. After condensation, the liquid phase 1,2-propylene glycol falls back to the original system, and the uncondensed gas phase continues to rise through the tube wall of the U-shaped heat exchange tube 2 to continue to exchange heat with the cooling medium second circulating water in the tube side, and a trace amount of uncondensed gas phase goes to the subsequent tail gas absorption system through the hot medium outlet 11. When it is necessary to preheat the cooling medium-soft water, open the cooling medium-soft water pipeline valve 15 to allow the softened water to continuously and stably flow into the first pipe pass. After the operation is stable, close the cooling medium-circulating water pipeline valve 14. The flow path of the cooling medium-soft water is: cooling medium-inlet 7→cooling medium-feeding cavity→U-shaped heat exchange tube-1→cooling medium-discharge cavity→cooling medium-outlet 8; the flow path of the heat medium is gaseous 1,2-propylene glycol: the bottom opening of the shell-side box 2→baffle 12→heat medium outlet 11, and the liquid 1,2-propylene glycol falls back to the original system after condensation.

[0024] Among them, the inlet temperature of cooling medium 1 softened water is 32℃, and the outlet temperature is about 40℃ after heat exchange; the inlet temperature of cooling medium 2 circulating water is 32℃, and the outlet temperature is about 37℃ after heat exchange; the temperature of hot medium gas phase 1,2-propylene glycol is 180~195℃.

[0025] The vertical heat exchanger of this embodiment can preheat two different cooling media at the same time according to the heat exchange requirements.

[0026] The vertical heat exchanger of the utility model may also be provided with a lower head at the bottom of the shell side box 2, and the lower head is provided with a heat medium inlet, and the flow path of the heat medium is: heat medium inlet→baffle 12→heat medium outlet 11.

[0027] The utility model provides a vertical heat exchanger, which can switch to use different cooling media for preheating according to the heat exchange demand when condensing or cooling the heat medium, and can also preheat two different cooling media at the same time, and only needs to switch the valve in the pipeline, which is convenient to operate and avoids the pollution and waste of different cooling media caused by sharing the same pipe. It also reduces the increase of other condensing equipment, reduces the occupation of production space, and reduces the investment cost while ensuring the stable operation of the condensing system.

[0028] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A vertical heat exchanger, characterized in that: It includes a tube-side box, a box head, a tube sheet, a cross-shaped partition, a shell-side box, a U-shaped heat exchange tube, a cooling medium inlet 1, a cooling medium outlet 1, a cooling medium inlet 2, a cooling medium outlet 2, a heat medium outlet and a baffle; The box head is provided above the tube-side box, and a tube sheet is provided between the tube-side box and the shell-side box; the cross-shaped partition is vertically provided in the tube-side box, and the cross-shaped partition divides the tube-side box into a cooling medium feed chamber 1, a cooling medium discharge chamber 1, a cooling medium feed chamber 2 and a cooling medium discharge chamber 2; the box head located above the cooling medium feed chamber 1 is provided with a cooling medium inlet 1, the box head located above the cooling medium discharge chamber 1 is provided with a cooling medium outlet 1, the box head located above the cooling medium feed chamber 2 is provided with a cooling medium inlet 2, and the box head located above the cooling medium discharge chamber 2 is provided with a cooling medium outlet 2; a heat medium outlet is provided on the upper side of the shell-side box; the bottom of the shell-side box is open; The U-shaped heat exchange tube is vertically installed inside the shell-side box, and the U-shaped heat exchange tube includes multiple U-shaped heat exchange tubes 1 and multiple U-shaped heat exchange tubes 2; the feed ports of multiple U-shaped heat exchange tubes 1 are sealed and connected to the feed cavity of cooling medium 1 through the tube sheet, and the discharge ports of multiple U-shaped heat exchange tubes 1 are sealed and connected to the discharge cavity of cooling medium 1 through the tube sheet; the feed ports of multiple U-shaped heat exchange tubes 2 are sealed and connected to the feed cavity of cooling medium 2 through the tube sheet, and the discharge ports of multiple U-shaped heat exchange tubes 2 are sealed and connected to the discharge cavity of cooling medium 2 through the tube sheet; multiple baffles are evenly distributed on the U-shaped heat exchange tube along the vertical direction, and the multiple baffles are fixedly connected to the U-shaped heat exchange tube.

2. The vertical heat exchanger according to claim 1, characterized in that: A lower head is provided at the bottom of the shell-side box body, and a heat medium inlet is provided on the lower head.

3. The vertical heat exchanger according to claim 1, characterized in that: It also includes a distance rod, the upper end of which is fixedly connected to the tube sheet, and the distance rod is fixedly connected to the plurality of baffles.

4. The vertical heat exchanger according to claim 2, characterized in that: The first cooling medium feed cavity is larger than the first cooling medium discharge cavity; the second cooling medium feed cavity is larger than the second cooling medium discharge cavity.

5. The vertical heat exchanger according to claim 1, characterized in that: The cross-sectional shapes of the tube-side casing and the shell-side casing are circular, square or elliptical.

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