Device for replacing heat exchanger

Abstract

The utility model relates to a device for replacing a heat exchanger, and belongs to the technical field of sulfuric acid plant heat exchanger construction. A device for replacing a heat exchanger is arranged beside an equipment foundation platform of an old heat exchanger, is used for replacing a new heat exchanger, and comprises a first replacing platform, a second replacing platform, a first winch, a second winch, a lifting lug, a traction lug and a round pipe. The first replacement platform and the second replacement platform are installed beside the equipment foundation platform in advance, and large equipment replacement can be completed through a hoisting-free translation method under the condition that the site is limited and a large crane is not placed. The first replacement platform and the second replacement platform can be installed beside the equipment foundation platform in advance, the new heat exchanger is installed on the first replacement platform in advance, the replacement and repair stop time of an old heat exchanger can not be occupied, the old heat exchanger operates normally in the installation period, and the production efficiency is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchanger construction in sulfuric acid plants, and in particular to a device for replacing a heat exchanger. Background Art

[0002] Heat exchangers are a common equipment in sulfuric acid plant production. They are usually used for cooling heat exchange and heat energy recovery to ensure the safe operation of equipment and reaction materials, and help improve production efficiency and reduce energy consumption.

[0003] As the production time of the heat exchanger increases during use, the shell side of the heat exchanger becomes clogged with dirt. Due to the narrow maintenance channel inside the heat exchanger and the small spacing between the tubes, the heat exchanger cannot be cleaned thoroughly and can only be cleaned locally. However, the effect of local cleaning is not good, showing problems such as increased system resistance (the shell side resistance of the heat exchanger increases from 1.8kPa in the initial state of the new equipment to 4.5kPa) and decreased heat exchange efficiency (the tube side temperature of the heat exchanger increases from the initial 180℃ to 220℃), which has a certain impact on the overall thermal balance and total conversion rate of the conversion system, affecting production efficiency.

[0004] In order to ensure the stable operation of the sulfuric acid plant, the entire heat exchanger needs to be replaced. The conventional way to replace the heat exchanger is to use a crane. However, due to the large size of the heat exchanger and the small environment around the heat exchanger, the replacement process becomes difficult, which will lead to inconvenience in operation or inability to complete the replacement. In addition, there are greater safety risks when using a large crane for replacement in a small environment, and the replacement project will be more complicated and time-consuming. At the same time, the replacement of the entire heat exchanger requires a long production stoppage time, which will lead to a long production interruption and cause production losses. Utility Model Content

[0005] In order to solve or partially solve the problems existing in the related art, the present application provides a device for replacing a heat exchanger, which can effectively ensure the efficient replacement process of the entire heat exchanger and reduce the impact on production.

[0006] The present application provides a device for replacing a heat exchanger, which is installed next to an equipment foundation platform of an old heat exchanger and is used for replacing a new heat exchanger, comprising:

[0007] A first replacement platform, a second replacement platform, a first hoist, a second hoist, a lifting eye, a pulling eye and a round pipe;

[0008] The first replacement platform and the second replacement platform are arranged and installed on the side of the equipment base platform;

[0009] The first replacement platform and the second replacement platform are in contact with the equipment base platform and the heights between the platforms are the same;

[0010] A plurality of round tubes are arranged on both the first replacement platform and the second replacement platform;

[0011] The new heat exchanger is arranged on the round tube of the first replacement platform;

[0012] A plurality of lifting lugs are installed on the outer shells of the old heat exchanger and the new heat exchanger;

[0013] A traction lug is installed on the outer shell of the old heat exchanger and the new heat exchanger;

[0014] The first winch is installed in front of the first replacement platform, and the second winch is installed in the rear of the second replacement platform.

[0015] Optionally, in some embodiments of the present application:

[0016] The first replacement platform and the second replacement platform both include: a top plate, a middle steel frame and a bottom plate.

[0017] Optionally, in some embodiments of the present application:

[0018] A plate strip is laid between the middle steel frame and the bottom base plate to ensure the overall flatness of the steel frame.

[0019] Optionally, in some embodiments of the present application:

[0020] The device for replacing the heat exchanger also includes: a jack;

[0021] The jack is used to lift the lifting lugs to lift the old and new heat exchangers.

[0022] Optionally, in some embodiments of the present application:

[0023] A first fixed anchor is installed in front of the first hoist, one end of the first hoist is fixed to the traction eye of the new heat exchanger, and the other end of the first hoist is fixed to the first fixed anchor;

[0024] A second fixed ground anchor is arranged in front of the second hoist. One end of the second hoist is fixed on the traction lifting lug of the old heat exchanger, and the other end of the second hoist is fixed on the second fixed ground anchor.

[0025] Optionally, in some embodiments of the present application:

[0026] The device for replacing the heat exchanger also includes: an anti-displacement angle iron for fixing the round tube.

[0027] The technical solution provided by this application may have the following beneficial effects:

[0028] In this application, the first replacement platform and the second replacement platform are installed in advance next to the equipment base platform, which occupy a smaller area. When the site is limited and there is no space for a large crane, the large equipment can be replaced by a lifting-free and translational method. The installation process is convenient and efficient, and can ensure production operation efficiency and safety.

[0029] The present application can install the first replacement platform and the second replacement platform in advance next to the equipment base platform, and install the new heat exchanger on the first replacement platform in advance, so as not to occupy the replacement and repair stop time of the old heat exchanger. The old heat exchanger can operate normally during the installation period to ensure production efficiency. At the same time, the present application can quickly realize the replacement of the old heat exchanger with the new heat exchanger by using a circular tube and a winch to move and transfer the old heat exchanger and the new heat exchanger, thereby improving the replacement efficiency and reducing the production interruption time to ensure the stable operation of the sulfuric acid plant.

[0030] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0032] Figure 1 It is a schematic side view of the overall structure of the first replacement platform in the embodiment of the present application;

[0033] Figure 2 is a schematic side view of the overall structure of the second replacement platform in the embodiment of the present application;

[0034] Figure 3 It is a schematic top view of the overall structure of a device for replacing a heat exchanger in an embodiment of the present application;

[0035] Figure 4 is a side view structural diagram of the second replacement platform in the embodiment of the present application;

[0036] Figure 5 It is a top view structural schematic diagram of the second replacement platform in the embodiment of the present application.

[0037] Figure numbers: 1-equipment base platform, 2-first replacement platform, 3-second replacement platform, 301-top plate, 302-steel frame, 303-bottom plate, 304-plate belt, 4-first winch, 401-first fixed anchor, 5-second winch, 501-second fixed anchor, 6-jack, 7-lifting eye, 8-traction eye, 9-round pipe, 10-old heat exchanger, 11-new heat exchanger. DETAILED DESCRIPTION

[0038] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0039] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0040] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In order to ensure the stable operation of the sulfuric acid plant, the entire heat exchanger needs to be replaced. The conventional way to replace the heat exchanger is to use a crane. However, due to the large size of the heat exchanger and the small environment around the heat exchanger, the replacement process becomes difficult, which will lead to inconvenience in operation or inability to complete the replacement. In addition, there are greater safety risks when using a large crane for replacement in a small environment, and the replacement project will be more complicated and time-consuming. At the same time, the replacement of the entire heat exchanger requires a long production stoppage time, which will lead to a long production interruption and cause production losses.

[0043] In response to the above problems, an embodiment of the present application provides a device for replacing a heat exchanger, which can effectively ensure the efficient replacement process of the entire heat exchanger and reduce the impact on production.

[0044] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0045] Figure 1 It is a schematic side view of the overall structure of the first replacement platform in the embodiment of the present application;

[0046] Figure 2 is a schematic side view of the overall structure of the second replacement platform in the embodiment of the present application;

[0047] Figure 3 It is a schematic top view of the overall structure of a device for replacing a heat exchanger in an embodiment of the present application;

[0048] Figure 4 is a side view structural diagram of the second replacement platform in the embodiment of the present application;

[0049] Figure 5 It is a top view structural schematic diagram of the second replacement platform in the embodiment of the present application.

[0050] See also Figure 1-5 , a device for replacing a heat exchanger, arranged to be installed beside an equipment base platform 1 of an old heat exchanger 10, for replacing a new heat exchanger 11, comprising:

[0051] A first replacement platform 2, a second replacement platform 3, a first hoist 4, a second hoist 5, a lifting eye 7, a traction eye 8 and a round pipe 9;

[0052] The first replacement platform 2 and the second replacement platform 3 are arranged and installed on the side of the equipment base platform 1;

[0053] By installing the first replacement platform 2 and the second replacement platform 3 next to the equipment base platform 1 in advance, the area occupied is smaller, and when the site is limited and there is no space for a large crane, the large equipment can be replaced by a lifting-free translation method, and the installation process is convenient and efficient, which can ensure the efficiency and safety of production operations.

[0054] The first replacement platform 2 and the second replacement platform 3 are fitted with the equipment base platform 1 and the heights between the platforms are the same, so as to ensure the stability of the old heat exchanger 10 and the new heat exchanger 11 during the movement, thereby effectively completing the replacement work.

[0055] The first replacement platform 2 and the second replacement platform 3 both include: a top plate 301, a middle steel frame 302 and a bottom plate 303. A plate strip 304 is laid between the middle steel frame 302 and the bottom plate 303 to ensure the overall flatness of the steel frame.

[0056] Specifically, the bottom plate 303 and the top plate 301 are steel plates. The bottom plate 303 can increase the stress-bearing area of ​​the bottom concrete, the top plate 301 can ensure the smooth and stable movement of the round tube 9, and the steel frame 302 in the middle can withstand a large load and pressure support. At the same time, by laying the plate belt 304, the overall flatness of the frame can be further improved, ensuring the smooth and stable movement of the round tube 9. The overall structure is simple and easy to install, and the installation can be completed quickly.

[0057] The first replacement platform 2 and the second replacement platform 3 are both provided with eight round tubes 9 arranged in an array;

[0058] The new heat exchanger 11 is arranged and placed on the eight round tubes 9 of the first replacement platform 2 .

[0059] In this embodiment, the device for replacing the heat exchanger further includes: an anti-displacement angle iron, through which the front and rear two round tubes of the array round tube 9 are fixed.

[0060] The anti-displacement angle iron is an angle iron with an angle of 45°. When fixed, one side of the anti-displacement angle iron is tangent to the round tube, and the other side of the anti-displacement angle iron is fixed to the first replacement platform by welding. After the anti-displacement angle iron is fixed, the round tube 9 can be fixed in position to ensure the stable installation of the new heat exchanger 11. Specifically, the bottom plate of the new heat exchanger 11 is first fixed on the array round tube 9, and then the internal components of the new heat exchanger 11 are installed.

[0061] Eight lifting lugs 7 are installed on the shells of the old heat exchanger 10 and the new heat exchanger 11;

[0062] A traction lug 8 is installed on the outer shell of the old heat exchanger 10 and the new heat exchanger 11;

[0063] The device for replacing the heat exchanger also includes: jacks 6; the number of the jacks 6 is eight, corresponding to the number of the lifting lugs.

[0064] The jack 6 is used to lift the lifting lugs to lift the old heat exchanger and the new heat exchanger.

[0065] The new heat exchanger 11 is placed on the round tube 9 and the new heat exchanger is moved on the round tube 9 by pulling the traction lug 8 on the new heat exchanger.

[0066] By using the jack 6 to lift the lifting lug 7 on the old heat exchanger, the old heat exchanger 10 can be lifted up, and after eight round tubes 9 are placed under the old heat exchanger 10, the jack 6 is released, and the old heat exchanger 10 is placed on the round tubes 9. By pulling the traction lug 8 on the old heat exchanger 10, the old heat exchanger 10 can be moved on the round tubes 9.

[0067] Specifically, the first hoist 4 is installed in front of the first replacement platform 2 , and the second hoist 5 is installed in the rear of the second replacement platform 3 .

[0068] A first fixed anchor 401 is installed in front of the first winch 4, one end of the first winch 4 is fixed to the traction lug 8 of the new heat exchanger 11, and the other end of the first winch 4 is fixed to the first fixed anchor 401; a second fixed anchor 501 is installed in front of the second winch 5, one end of the second winch 5 is fixed to the traction lug 8 of the old heat exchanger 10, and the other end of the second winch 5 is fixed to the second fixed anchor 501.

[0069] By fixing one end of the second winch 5 on the traction ear 8 of the old heat exchanger 10, the second winch 5 can be driven to pull the traction ear 8 of the old heat exchanger 10 to realize the movement of the old heat exchanger 10 on the round tube 9, and the moving direction of the old heat exchanger 10 is the traction direction of the second winch 5. At the same time, during the movement of the old heat exchanger 10, the round tube 9 is continuously placed on the second replacement platform 3 to ensure the continuous movement of the old heat exchanger 10, so that the old heat exchanger 10 can be transferred to the second replacement platform 3, and the transfer process of the old heat exchanger 10 is completed.

[0070] After the transfer process of the old heat exchanger 10 is completed, the first winch 4 is driven to pull the traction ear 8 of the new heat exchanger 11 to realize the movement of the new heat exchanger 11 on the round tube 9, and the moving direction of the new heat exchanger 11 is the traction direction of the first winch 4. At the same time, during the movement of the new heat exchanger 11, the round tube 9 is continuously placed on the first replacement platform 2 to ensure the continuous movement of the new heat exchanger 11, so that the new heat exchanger 11 can be transferred to the original old heat exchanger position of the equipment base platform 1, and the transfer process of the new heat exchanger 11 is completed.

[0071] The embodiments of the present application include the following beneficial effects:

[0072] In the present application, the first replacement platform 2 and the second replacement platform 3 are installed in advance next to the equipment base platform 1, which occupy a small area. When the site is limited and there is no space for a large crane, the large equipment can be replaced by a lifting-free and translational method. The installation process is convenient and efficient, and can ensure production operation efficiency and safety.

[0073] The present application can install the first replacement platform 2 and the second replacement platform 3 next to the equipment base platform 1 in advance, and install the new heat exchanger 11 on the first replacement platform 2 in advance, so as not to occupy the replacement and repair stop time of the old heat exchanger 10. The old heat exchanger 10 can operate normally during the installation period to ensure production efficiency. At the same time, the present application can quickly realize the replacement of the old heat exchanger with the new heat exchanger by using a circular pipe and a winch to move and transfer the old heat exchanger and the new heat exchanger, thereby improving the replacement efficiency and reducing the production interruption time to ensure the stable operation of the sulfuric acid plant.

[0074] Finally, it should be noted that, in this article, relationships such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms include, include or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0075] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A device for replacing a heat exchanger, arranged to be installed next to an equipment foundation platform (1) of an old heat exchanger, for replacing a new heat exchanger, characterized in that: include: A first replacement platform (2), a second replacement platform (3), a first hoist (4), a second hoist (5), a lifting eye (7), a traction eye (8) and a round pipe (9); The first replacement platform (2) and the second replacement platform (3) are arranged and installed on the side of the equipment base platform (1); The first replacement platform (2) and the second replacement platform (3) are in contact with the equipment base platform (1) and the heights between the platforms are the same; A plurality of round tubes (9) are arranged on both the first replacement platform (2) and the second replacement platform (3); the new heat exchanger (11) is arranged on the round tubes (9) of the first replacement platform (2); A plurality of lifting lugs (7) are installed on the outer shells of the old heat exchanger (10) and the new heat exchanger (11); A traction lug (8) is installed on the outer shell of the old heat exchanger (10) and the new heat exchanger (11); The first hoist (4) is arranged and installed in front of the first replacement platform (2), and the second hoist (5) is arranged and installed in the rear of the second replacement platform (3).

2. The device for replacing a heat exchanger according to claim 1, characterized in that: The first replacement platform (2) and the second replacement platform (3) both comprise: a top plate (301), a middle steel frame (302) and a bottom plate (303).

3. The device for replacing a heat exchanger according to claim 2, characterized in that: A plate strip (304) is laid between the middle steel frame (302) and the bottom plate (303) to ensure the overall flatness of the steel frame.

4. The device for replacing a heat exchanger according to claim 1, characterized in that: The device for replacing the heat exchanger further comprises: a jack (6); The jack (6) is used to lift the lifting lug (7) to lift the old heat exchanger and the new heat exchanger.

5. The device for replacing a heat exchanger according to claim 1, characterized in that: A first fixed ground anchor (401) is installed in front of the first hoist (4), one end of the first hoist (4) is fixed to the traction eye of the new heat exchanger (11), and the other end of the first hoist (4) is fixed to the first fixed ground anchor (401); A second fixed ground anchor (501) is installed in front of the second hoist (5); one end of the second hoist (5) is fixed to the traction eye of the old heat exchanger (10), and the other end of the second hoist (5) is fixed to the second fixed ground anchor (501).

6. The device for replacing a heat exchanger according to any one of claims 1 to 5, characterized in that: The device for replacing a heat exchanger further comprises: an anti-displacement angle iron for fixing the circular tube (9).

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