Skid-mounted U-shaped tube heat exchanger

Abstract

The utility model relates to the technical field of U-shaped tube heat exchangers, and discloses a skid-mounted U-shaped tube heat exchanger which comprises a base plate, a tank body is arranged above the base plate, and the top end of the tank body is fixedly connected with a hot fluid exhaust pipe and a cold fluid inlet pipe. According to the technical scheme, through structural matching of the limiting sleeve and the plug pin, the filter screen can be installed in the cold fluid inlet pipe and cannot be damaged due to collision caused by external factors, the filter screen cannot slide down even when being impacted by water flow from top to bottom, the installation firmness of the filter screen is improved, disassembly and assembly are convenient and fast, and the service life of the filter screen is prolonged. Under the action of the filter screen, impurities in tap water can be filtered, so that the situation that the impurities in the water are easily adsorbed on the pipe wall of the U-shaped heat exchange pipe due to long-term use of equipment is avoided, the cleaning difficulty of the U-shaped heat exchange pipe is reduced, and due to the design of the semicircular structure of the filter screen, the impurities filtered on the filter screen can be prevented from falling outside the filter screen, and convenience and practicability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of U-tube heat exchangers, in particular to a skid-mounted U-tube heat exchanger. Background Art

[0002] A type of shell-and-tube heat exchanger, a type of petrochemical equipment, consists of a tube box, shell, and tube bundle. It gets its name from the U-shaped shape of its heat exchange tubes. A U-tube heat exchanger has a single tube sheet, with both ends of the tubes fixed to the same sheet. This type of heat exchanger features flexible tube bundle expansion and contraction, eliminating thermal stress caused by temperature differences between the shell and tube, and providing excellent thermal compensation. It also features a double tube pass, resulting in a longer flow path, higher flow rates, and better heat transfer. It also has a strong pressure-bearing capacity. The tube bundle can be removed from the shell for easy maintenance and cleaning, and its simple structure and low cost make it an economical choice.

[0003] The published patent document with the announcement number CN214065797U discloses a U-tube heat exchanger, including a heat exchanger body, a U-shaped heat exchange tube and a head end cover. Support feet are installed on both sides of the bottom of the heat exchanger body. The bottom of the heat exchanger body is also provided with a first fluid outlet, and the top of the heat exchanger body is provided with a first fluid inlet. The front and rear ends of the heat exchanger body are provided with a card groove, and a sealing gasket is provided in the card groove. The open end of the heat exchanger body is provided with a first connecting flange, and the first connecting flange is provided with an annular limiting groove on the side away from the heat exchanger body. A first sealing ring is provided in the annular limiting groove. A head end cover is provided on one side of the heat exchanger body, and the open end of the head end cover is provided with a second connecting flange. The overall device is convenient for replacing a damaged single U-shaped heat exchange tube, reducing costs, and has good overall sealing performance to avoid fluid leakage, and has certain promotion value.

[0004] When the above-mentioned document is in use, water needs to be injected into the interior of the heat exchanger body. Since tap water is generally used, impurities in the water will adhere to the tube wall after long-term use, increasing the difficulty of cleaning the heat exchange tube. Therefore, a skid-mounted U-tube heat exchanger is needed. Utility Model Content

[0005] The purpose of the utility model is to provide a skid-mounted U-tube heat exchanger, which solves the problems raised in the background technology.

[0006] An embodiment of the present application provides a skid-mounted U-tube heat exchanger, comprising a base plate, a tank body being arranged above the base plate, a hot fluid exhaust pipe and a cold fluid inlet pipe being fixedly connected to the top end of the tank body, the cold fluid inlet pipe being located on one side of the hot fluid exhaust pipe, a limiting sleeve being provided at the top end of the cold fluid inlet pipe, a pin being inserted into the limiting sleeve, a filter being installed inside the limiting sleeve, the filter being located inside the cold fluid inlet pipe, a U-shaped heat exchange tube being provided inside the tank body, a cold fluid discharge pipe and a hot fluid inlet pipe being fixedly connected to the bottom end of the tank body, the hot fluid inlet pipe being located on one side of the cold fluid discharge pipe.

[0007] By adopting the above technical solution, the filter can be installed inside the cold fluid inlet pipe through the structural cooperation of the limit sleeve and the pin, and the filter will not slide down when it is impacted by the water flow from top to bottom, thereby improving the firmness of the filter installation and facilitating disassembly and assembly. The filter can filter impurities in the tap water to prevent the impurities in the water from being easily adsorbed on the wall of the U-shaped heat exchange tube during long-term use of the equipment, thereby reducing the difficulty of cleaning the U-shaped heat exchange tube.

[0008] Optionally, a socket is provided on the top end surface of the cold fluid inlet pipe, and the pin is inserted into the socket.

[0009] The adoption of the above technical solution is conducive to improving the firmness of the filter installation.

[0010] Optionally, the filter screen is a semicircular structure, and the end surface of the filter screen with the opening is arranged upward.

[0011] By adopting the above technical solution, more impurities can be stored and prevented from falling outside the filter.

[0012] Optionally, a plurality of U-shaped heat exchange tubes are provided, and a reinforcement plate is fixedly connected between the plurality of U-shaped heat exchange tubes.

[0013] The adoption of the above technical solution is conducive to improving the firmness of the installation between the U-shaped heat exchange tubes.

[0014] Optionally, a support column is fixedly connected between the tank body and the base plate.

[0015] By adopting the above technical solution, a certain distance can be created between the tank body and the base plate, facilitating the normal use of the cold fluid discharge pipe and the hot fluid intake pipe.

[0016] Optionally, anti-sliding blocks are fixedly connected to the four corners of the bottom end of the base plate.

[0017] The adoption of the above technical solution is beneficial to improving the anti-slip property of the substrate.

[0018] Optionally, the filter is made of steel.

[0019] The adoption of the above technical solution is beneficial to improving the service life of the filter.

[0020] Optionally, the maximum transverse diameter of the filter screen is adapted to the aperture of the tube hole of the cold fluid inlet pipe.

[0021] By adopting the above technical solution, a large gap between the filter screen and the cold fluid inlet pipe is avoided, which affects the impurity filtering effect.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The technical solution of the present application can install the filter screen inside the cold fluid inlet pipe through the structural cooperation of the limit sleeve and the pin, and will not be damaged by collision due to external factors. The filter screen will not slide down when it is impacted by the water flow from top to bottom, which improves the firmness of the filter screen installation and is convenient for assembly and disassembly. Under the action of the filter screen, impurities in tap water can be filtered to prevent the impurities in the water from being easily adsorbed on the tube wall of the U-shaped heat exchange tube during long-term use of the equipment, thereby reducing the difficulty of cleaning the U-shaped heat exchange tube. In addition, due to the design of the semi-circular structure of the filter screen, impurities filtered on the filter screen can be prevented from falling on the outside of the filter screen, which is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 This is a schematic diagram of the internal structure of a skid-mounted U-tube heat exchanger of the utility model;

[0026] Figure 2 This is a schematic diagram of the installation structure of a filter screen for a skid-mounted U-tube heat exchanger according to the present invention;

[0027] Figure 3 This is a schematic structural diagram of a cold fluid inlet pipe of a skid-mounted U-tube heat exchanger according to the present invention;

[0028] Figure 4 The utility model is a side view structural schematic diagram of a filter screen of a skid-mounted U-tube heat exchanger.

[0029] In the figure: 1. Tank body; 2. Reinforcement plate; 3. Hot fluid exhaust pipe; 4. Latch; 5. Limit sleeve; 6. Cold fluid inlet pipe; 7. U-shaped heat exchange tube; 8. Anti-sliding block; 9. Cold fluid discharge pipe; 10. Base plate; 11. Hot fluid inlet pipe; 12. Support column; 13. Filter; 14. Socket. DETAILED DESCRIPTION

[0030] See also Figure 1-4 The utility model provides a technical solution: a skid-mounted U-tube heat exchanger, comprising a base plate 10, a tank body 1 is arranged above the base plate 10, the top of the tank body 1 is fixedly connected with a hot fluid exhaust pipe 3 and a cold fluid inlet pipe 6, the cold fluid inlet pipe 6 is located on one side of the hot fluid exhaust pipe 3, a limiting sleeve 5 is provided at the top of the cold fluid inlet pipe 6, a pin 4 is inserted into the limiting sleeve 5, a filter screen 13 is installed inside the limiting sleeve 5, the filter screen 13 is located inside the cold fluid inlet pipe 6, a U-shaped heat exchange tube 7 is arranged inside the tank body 1, and the bottom end of the tank body 1 is fixedly connected with a cold fluid discharge pipe 9 and a hot fluid inlet pipe 11, and the hot fluid inlet pipe 11 is located on one side of the cold fluid discharge pipe 9.

[0031] In the technical solution of the present utility model, Figure 2 and Figure 3 As shown, a plug hole 14 is provided on the top end surface of the cold fluid inlet pipe 6, and the plug 4 is inserted into the inside of the plug hole 14; this is beneficial to improving the firmness of the installation of the filter screen 13.

[0032] In the technical solution of the present utility model, Figure 4 As shown, the filter screen 13 is a semicircular structure, and the end surface of the filter screen 13 with the opening is arranged upward; it can store more impurities and prevent the impurities from falling outside the filter screen 13.

[0033] In the technical solution of the present utility model, Figure 1 As shown, a plurality of U-shaped heat exchange tubes 7 are provided, and reinforcement plates 2 are fixedly connected between the plurality of U-shaped heat exchange tubes 7 , which is beneficial to improving the firmness of the installation between the U-shaped heat exchange tubes 7 .

[0034] In the technical solution of the present utility model, Figure 1 As shown, a support column 12 is fixedly connected between the tank body 1 and the base plate 10; a certain distance can be left between the tank body 1 and the base plate 10, which facilitates the normal use of the cold fluid discharge pipe 9 and the hot fluid inlet pipe 11.

[0035] In the technical solution of the present utility model, Figure 1 As shown, anti-slip blocks 8 are fixedly connected to the four corners of the bottom end of the base plate 10 , which is beneficial to improving the anti-slip property of the base plate 10 .

[0036] In the technical solution of the present utility model, Figure 4 As shown, the filter screen 13 is made of steel, which is beneficial to increasing the service life of the filter screen 13.

[0037] In the technical solution of the present utility model, Figure 2As shown, the maximum transverse diameter of the filter screen 13 is adapted to the pore diameter of the cold fluid inlet pipe 6 , thereby avoiding a large gap between the filter screen 13 and the cold fluid inlet pipe 6 , which would affect the impurity filtering effect.

[0038] Working principle: Since the U-tube heat exchanger is an existing technology, its working principle and usage process will not be described in detail. The filter 13 can be installed inside the cold fluid inlet pipe 6 with the cooperation of the limit sleeve 5 and the pin 4. The filter 13 will not be damaged by collision due to external factors, and the filter 13 will not slide down when it is impacted by the water flow from top to bottom, which improves the firmness of the installation of the filter 13 and is convenient for assembly and disassembly. When tap water enters the interior of the tank body 1 through the cold fluid inlet pipe 6, the impurities in the tap water can be filtered under the action of the filter 13 to prevent the impurities in the water from being easily adsorbed on the wall of the U-shaped heat exchange tube 7 during long-term use of the equipment, thereby reducing the difficulty of cleaning the U-shaped heat exchange tube 7, and due to the semi-circular structure design of the filter 13, when the impurities filtered on the filter 13 accumulate, they will not fall on the outside of the filter 13, which is convenient and practical.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A skid-mounted U-tube heat exchanger, characterized in that: The invention comprises a base plate (10), a tank body (1) is arranged above the base plate (10), a hot fluid exhaust pipe (3) and a cold fluid inlet pipe (6) are fixedly connected at the top end of the tank body (1), the cold fluid inlet pipe (6) is located on one side of the hot fluid exhaust pipe (3), a limiting sleeve (5) is arranged at the top end of the cold fluid inlet pipe (6), a latch (4) is inserted into the limiting sleeve (5), a filter screen (13) is installed inside the limiting sleeve (5), the filter screen (13) is located inside the cold fluid inlet pipe (6), a U-shaped heat exchange tube (7) is arranged inside the tank body (1), a cold fluid discharge pipe (9) and a hot fluid inlet pipe (11) are fixedly connected at the bottom end of the tank body (1), the hot fluid inlet pipe (11) is located on one side of the cold fluid discharge pipe (9).

2. The skid-mounted U-tube heat exchanger according to claim 1, characterized in that: The top end surface of the cold fluid inlet pipe (6) is provided with an insertion hole (14), and the plug (4) is inserted into the inside of the insertion hole (14).

3. The skid-mounted U-tube heat exchanger according to claim 1, characterized in that: The filter screen (13) is of a semicircular structure, and the end surface of the filter screen (13) with an opening is arranged upward.

4. The skid-mounted U-tube heat exchanger according to claim 1, characterized in that: A plurality of the U-shaped heat exchange tubes (7) are provided, and a reinforcement plate (2) is fixedly connected between the plurality of U-shaped heat exchange tubes (7).

5. The skid-mounted U-tube heat exchanger according to claim 1, characterized in that: A support column (12) is fixedly connected between the tank body (1) and the base plate (10).

6. The skid-mounted U-tube heat exchanger according to claim 1, characterized in that: Anti-sliding blocks (8) are fixedly connected to the four corners of the bottom end of the base plate (10).

7. The skid-mounted U-tube heat exchanger according to claim 1, characterized in that: The filter screen (13) is made of steel.

8. The skid-mounted U-tube heat exchanger according to claim 1, characterized in that: The maximum transverse diameter of the filter screen (13) is matched to the hole diameter of the cold fluid inlet pipe (6).

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